Outputs (63)

Controlled release of MT-1207 using a novel gastroretentive bilayer system comprised of hydrophilic and hydrophobic polymers (2023)
Journal Article
Vrettos, N., Wang, P., Wang, Y., Roberts, C. J., Xu, J., Yao, H., & Zhu, Z. (2023). Controlled release of MT-1207 using a novel gastroretentive bilayer system comprised of hydrophilic and hydrophobic polymers. Pharmaceutical Development and Technology, 28(8), 724-742. https://doi.org/10.1080/10837450.2023.2238822

In the present study, novel gastroretentive bilayer tablets were developed that are promising for the once-a-day oral delivery of the drug candidate MT-1207. The gastroretentive layer consisted of a combination of hydrophilic and hydrophobic polymers... Read More about Controlled release of MT-1207 using a novel gastroretentive bilayer system comprised of hydrophilic and hydrophobic polymers.

Utilising micron scale 3D printed morphologies for particle adhesion reduction (2022)
Journal Article
Marsh, G. E., Bunker, M. J., Alexander, M. R., Wildman, R. D., Nicholas, M., & Roberts, C. J. (2022). Utilising micron scale 3D printed morphologies for particle adhesion reduction. Powder Technology, 404, Article 117418. https://doi.org/10.1016/j.powtec.2022.117418

In the pharmaceutical industry, the ability to improve the understanding of the effect of surface roughness on interparticulate interactions is critical. Dry powder inhalers often possess poor efficiency, as the powder formulations are inherently adh... Read More about Utilising micron scale 3D printed morphologies for particle adhesion reduction.

Functionalized Gold Nanoparticles with a Cohesion Enhancer for Robust Flexible Electrodes (2022)
Journal Article
Im, J., Trindade, G. F., Quach, T. T., Sohaib, A., Wang, F., Austin, J., …Tuck, C. (2022). Functionalized Gold Nanoparticles with a Cohesion Enhancer for Robust Flexible Electrodes. ACS Applied Nano Materials, 5(5), 6708-6716. https://doi.org/10.1021/acsanm.2c00742

The development of conductive inks is required to enable additive manufacturing of electronic components and devices. A gold nanoparticle (AuNP) ink is of particular interest due to its high electrical conductivity, chemical stability, and biocompati... Read More about Functionalized Gold Nanoparticles with a Cohesion Enhancer for Robust Flexible Electrodes.

Correction to “Bespoke 3D-Printed Polydrug Implants Created via Microstructural Control of Oligomers” (2022)
Journal Article
Ruiz-Cantu, L., Trindade, G. F., Taresco, V., Zhou, Z., He, Y., Burroughs, L., …Wildman, R. D. (2022). Correction to “Bespoke 3D-Printed Polydrug Implants Created via Microstructural Control of Oligomers”. ACS Applied Materials and Interfaces, 14(6), 8654. https://doi.org/10.1021/acsami.2c00035

The chemical structure of the drug trandolapril has been corrected in Figure 4c. The conclusions of the work have not been affected by this correction. (Figure present).

Customisable Tablet Printing: The Development of Multimaterial Hot Melt Inkjet 3D Printing to Produce Complex and Personalised Dosage Forms (2021)
Journal Article
Lion, A., Wildman, R. D., Alexander, M. R., & Roberts, C. J. (2021). Customisable Tablet Printing: The Development of Multimaterial Hot Melt Inkjet 3D Printing to Produce Complex and Personalised Dosage Forms. Pharmaceutics, 13(10), Article 1679. https://doi.org/10.3390/pharmaceutics13101679

One of the most striking characteristics of 3D printing is its capability to produce multi-material objects with complex geometry. In pharmaceutics this translates to the possibility of dosage forms with multi-drug loading, tailored dosing and releas... Read More about Customisable Tablet Printing: The Development of Multimaterial Hot Melt Inkjet 3D Printing to Produce Complex and Personalised Dosage Forms.

Gastroretentive technologies in tandem with controlled-release strategies: A potent answer to oral drug bioavailability and patient compliance implications (2021)
Journal Article
Vrettos, N. N., Roberts, C. J., & Zhu, Z. (2021). Gastroretentive technologies in tandem with controlled-release strategies: A potent answer to oral drug bioavailability and patient compliance implications. Pharmaceutics, 13(10), 1-36. https://doi.org/10.3390/pharmaceutics13101591

There have been many efforts to improve oral drug bioavailability and therapeutic efficacy and patient compliance. A variety of controlled-release oral delivery systems have been developed to meet these needs. Gastroretentive drug delivery technologi... Read More about Gastroretentive technologies in tandem with controlled-release strategies: A potent answer to oral drug bioavailability and patient compliance implications.

Bespoke 3D-Printed Polydrug Implants Created via Microstructural Control of Oligomers (2021)
Journal Article
Ruiz-Cantu, L., Trindade, G. F., Taresco, V., Zhou, Z., He, Y., Burroughs, L., …Wildman, R. D. (2021). Bespoke 3D-Printed Polydrug Implants Created via Microstructural Control of Oligomers. ACS Applied Materials and Interfaces, 13(33), 38969-38978. https://doi.org/10.1021/acsami.1c07850

Controlling the microstructure of materials by means of phase separation is a versatile tool for optimizing material properties. Phase separation has been exploited to fabricate intricate microstructures in many fields including cell biology, tissue... Read More about Bespoke 3D-Printed Polydrug Implants Created via Microstructural Control of Oligomers.

Exploiting Generative Design for 3D Printing of Bacterial Biofilm Resistant Composite Devices (2021)
Journal Article
He, Y., Abdi, M., Trindade, G. F., Begines, B., Dubern, J. F., Prina, E., …Wildman, R. D. (2021). Exploiting Generative Design for 3D Printing of Bacterial Biofilm Resistant Composite Devices. Advanced Science, 8(15), Article 2100249. https://doi.org/10.1002/advs.202100249

As the understanding of disease grows, so does the opportunity for personalization of therapies targeted to the needs of the individual. To bring about a step change in the personalization of medical devices it is shown that multi-material inkjet-bas... Read More about Exploiting Generative Design for 3D Printing of Bacterial Biofilm Resistant Composite Devices.

Residual polymer stabiliser causes anisotropic electrical conductivity during inkjet printing of metal nanoparticles (2021)
Journal Article
Trindade, G. F., Wang, F., Im, J., He, Y., Balogh, A., Scurr, D., …Roberts, C. J. (2021). Residual polymer stabiliser causes anisotropic electrical conductivity during inkjet printing of metal nanoparticles. Communications Materials, 2(1), Article 47. https://doi.org/10.1038/s43246-021-00151-0

Inkjet printing of metal nanoparticles allows for design flexibility, rapid processing and enables the 3D printing of functional electronic devices through co-deposition of multiple materials. However, the performance of printed devices, especially t... Read More about Residual polymer stabiliser causes anisotropic electrical conductivity during inkjet printing of metal nanoparticles.

3D printed polymeric drug-eluting implants (2021)
Journal Article
Liaskoni, A., Wildman, R. D., & Roberts, C. J. (2021). 3D printed polymeric drug-eluting implants. International Journal of Pharmaceutics, 597, Article 120330. https://doi.org/10.1016/j.ijpharm.2021.120330

An extrusion-based 3D printer has been used for the manufacturing of sustained drug release poly(ε-caprolactone) (PCL) implants. Such implants can address issues of reduced patient compliance due to the necessary frequent administration of convention... Read More about 3D printed polymeric drug-eluting implants.

In vitro and in vivo evaluation of a sustained-release once-a-day formulation of the novel antihypertensive drug MT-1207 (2021)
Journal Article
Vrettos, N., Wang, P., Zhou, Y., Roberts, C. J., Xu, J., Yao, H., & Zhu, Z. (2021). In vitro and in vivo evaluation of a sustained-release once-a-day formulation of the novel antihypertensive drug MT-1207. Pharmaceutical Development and Technology, 26(3), 349-361. https://doi.org/10.1080/10837450.2021.1872087

Hypertension is one of the most common chronic cardiovascular disorders. Sustained-release formulations are developed to maintain drug therapeutic levels throughout the treatment of hypertension, to promote patient compliance and improve patient outc... Read More about In vitro and in vivo evaluation of a sustained-release once-a-day formulation of the novel antihypertensive drug MT-1207.

A 3D printed drug delivery implant formed from a dynamic supramolecular polyurethane formulation (2020)
Journal Article
Salimi, S., Wu, Y., Barreiros, M. I. E., Natfji, A. A., Khaled, S., Wildman, R., …Hayes, W. (2020). A 3D printed drug delivery implant formed from a dynamic supramolecular polyurethane formulation. Polymer Chemistry, 11(20), 3453-3464. https://doi.org/10.1039/d0py00068j

© 2020 The Royal Society of Chemistry. Using a novel molecular design approach, we have prepared a thermo-responsive supramolecular polyurethane as a matrix material for use in drug eluting implants. The dynamic supramolecular polyurethane (SPU) is a... Read More about A 3D printed drug delivery implant formed from a dynamic supramolecular polyurethane formulation.

A Reactive Prodrug Ink Formulation Strategy for Inkjet 3D Printing of Controlled Release Dosage Forms and Implants (2020)
Journal Article
He, Y., Foralosso, R., Ferraz Trindade, G., Ilchev, A., Cantu, L. R., Clark, E., …Wildman, R. D. (2020). A Reactive Prodrug Ink Formulation Strategy for Inkjet 3D Printing of Controlled Release Dosage Forms and Implants. Advanced Therapeutics, 3(6), Article 1900187. https://doi.org/10.1002/adtp.201900187

We propose a strategy for creating tuneable 3D printed drug delivery devices. 3D printing offers the opportunity for improved compliance and patient treatment outcomes through personalisation, but bottlenecks include finding formulations that provide... Read More about A Reactive Prodrug Ink Formulation Strategy for Inkjet 3D Printing of Controlled Release Dosage Forms and Implants.

Development of an in vitro system to study the interactions of aerosolized drugs with pulmonary mucus (2020)
Journal Article
Alqahtani, S., Roberts, C. J., Stolnik, S., & Bosquillon, C. (2020). Development of an in vitro system to study the interactions of aerosolized drugs with pulmonary mucus. Pharmaceutics, 12(2), https://doi.org/10.3390/pharmaceutics12020145

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Mucus is the first biological component inhaled drugs encounter on their journey towards their pharmacological target in the upper airways. Yet, how mucus may influence drug disposition and ef... Read More about Development of an in vitro system to study the interactions of aerosolized drugs with pulmonary mucus.

Is rat a good model for assessment of particulate-based taste-masked formulations? (2019)
Journal Article
Ali, J., Chiang, M., Lee, J. B., Voronin, G. O., Bennett, J., Cram, A., …Gershkovich, P. (2020). Is rat a good model for assessment of particulate-based taste-masked formulations?. European Journal of Pharmaceutics and Biopharmaceutics, 146, 1-9. https://doi.org/10.1016/j.ejpb.2019.11.001

Recently there has been an increased interest to develop specialised dosage forms that are better suited to specific patient populations, such as paediatrics and geriatrics. In these patient populations the acceptability of the oral dosage form can b... Read More about Is rat a good model for assessment of particulate-based taste-masked formulations?.

Making tablets for delivery of poorly soluble drugs using photoinitiated 3D inkjet printing (2019)
Journal Article
Yoo, J., Clark, E. A., Wallace, M. J., Irvine, D. J., Alexander, M. R., Roberts, C. J., & Wildman, R. D. (2020). Making tablets for delivery of poorly soluble drugs using photoinitiated 3D inkjet printing. International Journal of Pharmaceutics, 578, https://doi.org/10.1016/j.ijpharm.2019.118805

© 2019 In this study, we investigate the viability of three-dimensional (3D) inkjet printing with UV curing to produce solid dosage forms containing a known poorly soluble drug, carvedilol. The formulation consists of 10 wt% carvedilol, Irgacure 2959... Read More about Making tablets for delivery of poorly soluble drugs using photoinitiated 3D inkjet printing.

Cetuximab-conjugated chitosan-pectinate (modified) composite nanoparticles for targeting colon cancer (2019)
Journal Article
Sabra, R., Billa, N., & Roberts, C. J. (2019). Cetuximab-conjugated chitosan-pectinate (modified) composite nanoparticles for targeting colon cancer. International Journal of Pharmaceutics, 572, Article 118775. https://doi.org/10.1016/j.ijpharm.2019.118775

© 2019 Elsevier B.V. In the present study, we successfully developed a cetuximab-conjugated modified citrus pectin-chitosan nanoparticles for targeted delivery of curcumin (Cet-MCPCNPs) for the treatment of colorectal cancer. In vitro analyses reveal... Read More about Cetuximab-conjugated chitosan-pectinate (modified) composite nanoparticles for targeting colon cancer.

Pharmacokinetics and tissue distribution of an orally administered mucoadhesive chitosan-coated amphotericin B-Loaded nanostructured lipid carrier (NLC) in rats (2019)
Journal Article
Ling, J. T. S., Roberts, C., & Billa, N. (2019). Pharmacokinetics and tissue distribution of an orally administered mucoadhesive chitosan-coated amphotericin B-Loaded nanostructured lipid carrier (NLC) in rats. Journal of Biomaterials Science, Polymer Edition, 31(2), 141-154. https://doi.org/10.1080/09205063.2019.1680926

© 2019 Informa UK Limited, trading as Taylor & Francis Group. Oral delivery of amphotericin B (AmpB) is desirable because it provides a more patient-friendly mode of administration compared to the current delivery approach akin with the marketed Am... Read More about Pharmacokinetics and tissue distribution of an orally administered mucoadhesive chitosan-coated amphotericin B-Loaded nanostructured lipid carrier (NLC) in rats.

High-throughput characterization of fluid properties to predict droplet ejection for three-dimensional inkjet printing formulations (2019)
Journal Article
Zhou, Z., Ruiz Cantu, L., Chen, X., Alexander, M. R., Roberts, C. J., Hague, R., …Wildman, R. (2019). High-throughput characterization of fluid properties to predict droplet ejection for three-dimensional inkjet printing formulations. Additive Manufacturing, 29, Article 100792. https://doi.org/10.1016/j.addma.2019.100792

Inkjet printing has been used as an Additive Manufacturing (AM) method to fabricate three-dimensional (3D) structures. However, a lack of materials suitable for inkjet printing poses one of the key challenges that impedes industry from fully adopting... Read More about High-throughput characterization of fluid properties to predict droplet ejection for three-dimensional inkjet printing formulations.

Nanofibrous scaffolds support a 3D in vitro permeability model of the human intestinal epitheleum (2019)
Journal Article
Patient, J. D., Hajiali, H., Harris, K., Abrahamsson, B., Tannergreen, C., White, L. J., …Rose, F. R. (2019). Nanofibrous scaffolds support a 3D in vitro permeability model of the human intestinal epitheleum. Frontiers in Pharmacology, 10, Article 456. https://doi.org/10.3389/fphar.2019.00456

Advances in drug research not only depend on high throughput screening to evaluate large numbers of lead compounds but also on the development of in vitro models which can simulate human tissues in terms of drug permeability and functions. Potential... Read More about Nanofibrous scaffolds support a 3D in vitro permeability model of the human intestinal epitheleum.

Water-Based 3D Inkjet Printing of an Oral Pharmaceutical Dosage Form (2019)
Journal Article
Cader, H. K., Rance, G. A., Alexander, M. R., Gonçalves, A. D., Roberts, C. J., Tuck, C. J., & Wildman, R. D. (2019). Water-Based 3D Inkjet Printing of an Oral Pharmaceutical Dosage Form. International Journal of Pharmaceutics, 564, 359-368. https://doi.org/10.1016/j.ijpharm.2019.04.026

Inkjet printing is a form of additive manufacturing where liquid droplets are selectively deposited onto a substrate followed by solidification. The process provides significant potential advantages for producing solid oral dosage forms or tablets, i... Read More about Water-Based 3D Inkjet Printing of an Oral Pharmaceutical Dosage Form.

Antifungal and mucoadhesive properties of an orally administered chitosan-coated amphotericin B 1 nanostructured lipid carrier (NLC) (2019)
Journal Article
Ling, J. T. S., Roberts, C., & Billa, N. (2019). Antifungal and mucoadhesive properties of an orally administered chitosan-coated amphotericin B 1 nanostructured lipid carrier (NLC). AAPS PharmSciTech, 20(3), https://doi.org/10.1208/s12249-019-1346-7

Surface - modified nanostructured lipid carriers (NLC) is a promising formulation to prolong the retention time of the therapeutic agent at the site of absorption. Chitosan-coated AmpB-loaded NLC (ChiAmpB NLC) were developed showing particle size of... Read More about Antifungal and mucoadhesive properties of an orally administered chitosan-coated amphotericin B 1 nanostructured lipid carrier (NLC).

Lipids and polymers in pharmaceutical technology: lifelong companions (2019)
Journal Article
Siepmann, J., Faham, A., Clas, S., Boyd, B. J., Jannin, V., Bernkop-Schnürch, A., …Leroux, J. (2019). Lipids and polymers in pharmaceutical technology: lifelong companions. International Journal of Pharmaceutics, 558, 128-142. https://doi.org/10.1016/j.ijpharm.2018.12.080

In pharmaceutical technology, lipids and polymers are considered pillar excipients for the fabrication of most dosage forms, irrespective of the administration route. They play various roles ranging from support vehicles to release rate modifiers, st... Read More about Lipids and polymers in pharmaceutical technology: lifelong companions.

Chemical Imaging of Buried Interfaces in Organic-Inorganic Devices Using Focused Ion Beam-Time-of-Flight-Secondary-Ion Mass Spectrometry (2019)
Journal Article
Tiddia, M., Mihara, I., Seah, M. P., Trindade, G. F., Kollmer, F., Roberts, C. J., …Havelund, R. (2019). Chemical Imaging of Buried Interfaces in Organic-Inorganic Devices Using Focused Ion Beam-Time-of-Flight-Secondary-Ion Mass Spectrometry. ACS Applied Materials and Interfaces, 11(4), 4500-4506. https://doi.org/10.1021/acsami.8b15091

Copyright © 2019 American Chemical Society. Organic-inorganic hybrid materials enable the design and fabrication of new materials with enhanced properties. The interface between the organic and inorganic materials is often critical to the device's pe... Read More about Chemical Imaging of Buried Interfaces in Organic-Inorganic Devices Using Focused Ion Beam-Time-of-Flight-Secondary-Ion Mass Spectrometry.

Application of biorelevant saliva-based dissolution for optimisation of orally disintegrating formulations of felodipine (2018)
Journal Article
Ali, J., Zgair, A., Hameed, G. S., Garnett, M. C., Roberts, C. J., Burley, J. C., & Gershkovich, P. (2019). Application of biorelevant saliva-based dissolution for optimisation of orally disintegrating formulations of felodipine. International Journal of Pharmaceutics, 555, 228-236. https://doi.org/10.1016/j.ijpharm.2018.11.051

The oral cavity is of great importance to the performance of orally retained formulations, including: orally disintegrating tablets, taste-masked formulations, and buccal/sublingual delivery systems. With regards to in vitro dissolution assessment of... Read More about Application of biorelevant saliva-based dissolution for optimisation of orally disintegrating formulations of felodipine.

Mucoadhesive chitosan-coated nanostructured lipid carriers for oral delivery of amphotericin B (2018)
Journal Article
Tan Sui Ling, J., Roberts, C., & Billa, N. (2018). Mucoadhesive chitosan-coated nanostructured lipid carriers for oral delivery of amphotericin B. Pharmaceutical Development and Technology, 24(4), 504-512. https://doi.org/10.1080/10837450.2018.1515225

This study describes the properties of an amphotericin B-containing mucoadhesive nanostructured lipid carrier (NLC), with the intent to maximize uptake within the gastrointestinal tract. We have reported previously that lipid nanoparticles can signif... Read More about Mucoadhesive chitosan-coated nanostructured lipid carriers for oral delivery of amphotericin B.

Extrusion 3D printing of paracetamol tablets from a single formulation with tunable release profiles through control of tablet geometry (2018)
Journal Article
Khaled, S. A., Alexander, M. R., Irvine, D. J., Wildman, R. D., Wallace, M. J., Sharpe, S., …Roberts, C. J. (2018). Extrusion 3D printing of paracetamol tablets from a single formulation with tunable release profiles through control of tablet geometry. AAPS PharmSciTech, 19(8), 3403–3413. https://doi.org/10.1208/s12249-018-1107-z

An extrusion based 3D printer was used to fabricate paracetamol tablets with different geometries (mesh, ring, and solid) from a single paste-based formulation formed from standard pharmaceutical ingredients. The tablets demonstrate that tunable drug... Read More about Extrusion 3D printing of paracetamol tablets from a single formulation with tunable release profiles through control of tablet geometry.

Using total specific cost indices to compare the cost performance of additive manufacturing for the medical devices domain (2018)
Journal Article
Baumers, M., Wildman, R., Wallace, M., Yoo, J., Blackwell, B., Farr, P., & Roberts, C. J. (2018). Using total specific cost indices to compare the cost performance of additive manufacturing for the medical devices domain. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 1-15. https://doi.org/10.1177/0954405418774591

The label additive manufacturing, also known as three-dimensional printing, serves as an umbrella term for a number of technologies designed to deposit product geometries directly from build materials and digital design information. However, as a rel... Read More about Using total specific cost indices to compare the cost performance of additive manufacturing for the medical devices domain.

The role of dipole interactions in hyperthermia heating colloidal clusters of densely-packed superparamagnetic nanoparticles (2018)
Journal Article
Fu, R., Yan, Y., Roberts, C., Liu, Z., & Chen, Y. (in press). The role of dipole interactions in hyperthermia heating colloidal clusters of densely-packed superparamagnetic nanoparticles. Scientific Reports, 8(1), https://doi.org/10.1038/s41598-018-23225-5

This work aims to investigate the influence of inter-particle dipole interactions on hyperthermia heating colloidal clusters of densely-packed Fe3O4 nanoparticles at low field intensity. Emulsion droplet solvent evaporation method was used to assembl... Read More about The role of dipole interactions in hyperthermia heating colloidal clusters of densely-packed superparamagnetic nanoparticles.

Multiple linear regression modelling to predict the stability of polymer-drug solid dispersions: comparison of the effects of polymers and manufacturing methods on solid dispersion stability (2018)
Journal Article
Fridgeirsdottir, G., Harris, R., Dryden, I. L., Fischer, P. M., & Roberts, C. J. (2018). Multiple linear regression modelling to predict the stability of polymer-drug solid dispersions: comparison of the effects of polymers and manufacturing methods on solid dispersion stability. Molecular Pharmaceutics, 15(5), https://doi.org/10.1021/acs.molpharmaceut.8b00021

Solid dispersions can be a successful way to enhance the bioavailability of poorly soluble drugs. Here 60 solid dispersion formulations were produced using ten chemically diverse, neutral, poorly soluble drugs, three commonly used polymers, and two m... Read More about Multiple linear regression modelling to predict the stability of polymer-drug solid dispersions: comparison of the effects of polymers and manufacturing methods on solid dispersion stability.

The application of X-ray micro Computed Tomography imaging for tracing particle movement in soil (2018)
Journal Article
Grayling, K., Young, S. D., Roberts, C. J., de Heer, M. I., Shirley, I., Sturrock, C., & Mooney, S. J. (2018). The application of X-ray micro Computed Tomography imaging for tracing particle movement in soil. Geoderma, 321, https://doi.org/10.1016/j.geoderma.2018.01.038

Despite significant advances in recent years in the application of sensing and imaging technologies to the study of the hydraulic behaviour of soils, our understanding of how solutes and particulate matter move through soil is still limited and often... Read More about The application of X-ray micro Computed Tomography imaging for tracing particle movement in soil.

3D extrusion printing of high drug loading immediate release paracetamol tablets (2018)
Journal Article
Khaled, S. A., Alexander, M. R., Wildman, R. D., Wallace, M. J., Sharpe, S., Yoo, J., & Roberts, C. J. (2018). 3D extrusion printing of high drug loading immediate release paracetamol tablets. International Journal of Pharmaceutics, 538(1-2), 223-230. https://doi.org/10.1016/j.ijpharm.2018.01.024

The manufacture of immediate release high drug loading paracetamol oral tablets was achieved using an extrusion based 3D printer from a premixed water based paste formulation. The 3D printed tablets demonstrate that a very high drug (paracetamol) loa... Read More about 3D extrusion printing of high drug loading immediate release paracetamol tablets.

Identification of novel ‘inks’ for 3D printing using high throughput screening: bioresorbable photocurable polymers for controlled drug delivery (2018)
Journal Article
Louzao, I., Koch, B., Taresco, V., Ruiz Cantu, L., Irvine, D. J., Roberts, C. J., …Alexander, M. R. (in press). Identification of novel ‘inks’ for 3D printing using high throughput screening: bioresorbable photocurable polymers for controlled drug delivery. ACS Applied Materials and Interfaces, 10(8), https://doi.org/10.1021/acsami.7b15677

A robust discovery methodology is presented to identify novel biomaterials suitable for 3D printing. Currently the application of Additive Manufacturing is limited by the availability of functional inks, especially in the area of biomaterials-this me... Read More about Identification of novel ‘inks’ for 3D printing using high throughput screening: bioresorbable photocurable polymers for controlled drug delivery.

An augmented delivery of the anticancer agent, curcumin, to the colon (2017)
Journal Article
Sabra, R., Billa, N., & Roberts, C. J. (2018). An augmented delivery of the anticancer agent, curcumin, to the colon. Reactive and Functional Polymers, 123, https://doi.org/10.1016/j.reactfunctpolym.2017.12.012

This work describes the formulation aspects of an orally viable curcumin-containing mucoadhesive nanoparticulate system for management of colon cancer. Curcumin is documented to possess anticancer properties whilst modified citrus pectin yields a gal... Read More about An augmented delivery of the anticancer agent, curcumin, to the colon.

3D printing of tablets using inkjet with UV photoinitiation (2017)
Journal Article
Clark, E. A., Alexander, M. R., Irvine, D. J., Roberts, C. J., Wallace, M. J., Sharpe, S., …Wildman, R. D. (2017). 3D printing of tablets using inkjet with UV photoinitiation. International Journal of Pharmaceutics, 529(1-2), 523-530. https://doi.org/10.1016/j.ijpharm.2017.06.085

Additive manufacturing (AM) offers significant potential benefits in the field of drug delivery and pharmaceutical/medical device manufacture. Of AM processes, 3D inkjet printing enables precise deposition of a formulation, whilst offering the potent... Read More about 3D printing of tablets using inkjet with UV photoinitiation.

3D inkjet printing of tablets exploiting bespoke complex geometries for controlled and tuneable drug release (2017)
Journal Article
Kyobula, M., Adedeji, A., Alexander, M. R., Saleh, E., Wildman, R. D., Ashcroft, I., …Roberts, C. J. (2017). 3D inkjet printing of tablets exploiting bespoke complex geometries for controlled and tuneable drug release. Journal of Controlled Release, 261, 207-215. https://doi.org/10.1016/j.jconrel.2017.06.025

A hot melt 3D inkjet printing method with the potential to manufacture formulations in complex and adaptable geometries for the controlled loading and release of medicines is presented. This first use of a precisely controlled solvent free inkjet pri... Read More about 3D inkjet printing of tablets exploiting bespoke complex geometries for controlled and tuneable drug release.

Multiboronic acid-conjugated chitosan scaffolds with glucose selectivity to insulin release (2017)
Journal Article
Siddiqui, N. A., Billa, N., & Roberts, C. J. (in press). Multiboronic acid-conjugated chitosan scaffolds with glucose selectivity to insulin release. Journal of Biomaterials Science, Polymer Edition, 28(8), https://doi.org/10.1080/09205063.2017.1301774

The principal challenge for the use of boronic acids (BA) as glucose sensors is their lack of specificity for glucose. We examined the selectivity of and insulin release from two boronic acids- (2-formyl-3-thienylboronic acid (FTBA) and 4-formylpheny... Read More about Multiboronic acid-conjugated chitosan scaffolds with glucose selectivity to insulin release.

Controlling the release of indomethacin from glass solutions layered with a rate controlling membrane using fluid-bed processing. Part 1: Surface and cross-sectional chemical analysis (2017)
Journal Article
Dereymaker, A., Scurr, D. J., Steer, E. D., Roberts, C. J., & Van den Mooter, G. (2017). Controlling the release of indomethacin from glass solutions layered with a rate controlling membrane using fluid-bed processing. Part 1: Surface and cross-sectional chemical analysis. Molecular Pharmaceutics, 14(4), 959-973. https://doi.org/10.1021/acs.molpharmaceut.6b01023

Fluid bed coating has been shown to be a suitable manufacturing technique to formulate poorly soluble drugs in glass solutions. Layering inert carriers with a drug–polymer mixture enables these beads to be immediately filled into capsules, thus avoid... Read More about Controlling the release of indomethacin from glass solutions layered with a rate controlling membrane using fluid-bed processing. Part 1: Surface and cross-sectional chemical analysis.

Correlating gastric emptying of amphotericin B and paracetamol solid lipid nanoparticles with changes in particle surface chemistry (2016)
Journal Article
Amekyeh, H., Billa, N., & Roberts, C. J. (2017). Correlating gastric emptying of amphotericin B and paracetamol solid lipid nanoparticles with changes in particle surface chemistry. International Journal of Pharmaceutics, 517(1-2), https://doi.org/10.1016/j.ijpharm.2016.12.001

Oral delivery of pharmaceuticals requires that they retain their physical and chemical attributes during transit within the gastrointestinal (GI) tract, for the manifestation of desired therapeutic profiles. Solid lipid nanoparticles (SLNs) are used... Read More about Correlating gastric emptying of amphotericin B and paracetamol solid lipid nanoparticles with changes in particle surface chemistry.

Disruption of diphenylalanine assembly by a Boc-modified variant (2016)
Journal Article
Creasey, R., Louzao, I., Arnon, Z., Marco, P., Adler-Abramovich, L., Roberts, C. J., …Tendler, S. J. (2016). Disruption of diphenylalanine assembly by a Boc-modified variant. Soft Matter, 12(47), 9451-9457. https://doi.org/10.1039/c6sm01770c

Peptide-based biomaterials are key to the future of diagnostics and therapy, promoting applications such as tissue scaffolds and drug delivery vehicles. To realise the full potential of the peptide systems, control and optimisation of material proper... Read More about Disruption of diphenylalanine assembly by a Boc-modified variant.

Scanning Probe Microscopy, Applications (2016)
Book Chapter
Roberts, C., Davies, M., Tendler, S., & Williams, P. (2017). Scanning Probe Microscopy, Applications. In Encyclopedia of spectroscopy and spectrometry (15-22). (3rd edition). Cham: Elsevier. https://doi.org/10.1016/B978-0-12-803224-4.00275-2

The family of scanning probe microscopes (SPMs) have revolutionary imaging capabilities on a range of materials. For example, atomic resolution images of metal and semiconductor surfaces produced by the scanning tunnelling microscope (STM) or images... Read More about Scanning Probe Microscopy, Applications.

Mucoadhesive chitosan-pectinate nanoparticles for the delivery of curcumin to the colon (2016)
Journal Article
Alkhader, E., Billa, N., & Roberts, C. J. (2017). Mucoadhesive chitosan-pectinate nanoparticles for the delivery of curcumin to the colon. AAPS PharmSciTech, 18(4), 1009-1018. https://doi.org/10.1208/s12249-016-0623-y

In the present study, we report the properties of a mucoadhesive chitosan-pectinate nanoparticulate formulation able to retain its integrity in the milieu of the upper gastrointestinal tract and subsequently, mucoadhere and release curcumin in colon... Read More about Mucoadhesive chitosan-pectinate nanoparticles for the delivery of curcumin to the colon.

Controlling the physical dimensions of peptide nanotubes by supramolecular polymer coassembly (2016)
Journal Article
Adler-Abramovich, L., Marco, P., Arnon, Z. A., Creasey, R. C., Michaels, T. C., Levin, A., …Gazit, E. (2016). Controlling the physical dimensions of peptide nanotubes by supramolecular polymer coassembly. ACS Nano, 10(8), 7436-7442. https://doi.org/10.1021/acsnano.6b01587

Molecular self-assembly of peptides into ordered nanotubes is highly important for various technological applications. Very short peptide building blocks, as short as dipeptides, can form assemblies with unique mechanical, optical, piezoelectric, and... Read More about Controlling the physical dimensions of peptide nanotubes by supramolecular polymer coassembly.

Imaging of Crystalline and Amorphous Surface Regions Using Time-of-Flight Secondary-Ion Mass Spectrometry (ToF-SIMS): Application to Pharmaceutical Materials (2016)
Journal Article
Iuraş, A., Scurr, D. J., Boissier, C., Nicholas, M. L., Roberts, C. J., & Alexander, M. R. (2016). Imaging of Crystalline and Amorphous Surface Regions Using Time-of-Flight Secondary-Ion Mass Spectrometry (ToF-SIMS): Application to Pharmaceutical Materials. Analytical Chemistry, 88(7), 3481-3487. https://doi.org/10.1021/acs.analchem.5b02621

The structure of a material, in particular the extremes of crystalline and amorphous forms, significantly impacts material performance in numerous sectors such as semiconductors, energy storage, and pharmaceutical products, which are investigated in... Read More about Imaging of Crystalline and Amorphous Surface Regions Using Time-of-Flight Secondary-Ion Mass Spectrometry (ToF-SIMS): Application to Pharmaceutical Materials.

The effect of protein concentration on the viscosity of a recombinant albumin solution formulation (2016)
Journal Article
Gonçalves, A. D., Alexander, C., Roberts, C. J., Spain, S. G., Uddin, S., & Allen, S. (2016). The effect of protein concentration on the viscosity of a recombinant albumin solution formulation. RSC Advances, 6(18), 15143-15154. https://doi.org/10.1039/c5ra21068b

The effect of protein concentration on solution viscosity in a commercially available biopharmaceutical formulation of recombinant albumin (rAlbumin) was studied. The level of protein aggregation with concentration and its impact on solution viscosit... Read More about The effect of protein concentration on the viscosity of a recombinant albumin solution formulation.

Study of the effect of dipole interactions on hyperthermia heating the cluster composed of superparamagnetic nanoparticles (2015)
Journal Article
Fu, R., Yan, Y., & Roberts, C. (2015). Study of the effect of dipole interactions on hyperthermia heating the cluster composed of superparamagnetic nanoparticles. AIP Advances, 5(12), https://doi.org/10.1063/1.4939514

3D printing of tablets containing multiple drugs with defined release profiles (2015)
Journal Article
Khaled, S., Burley, J., Alexander, M., Yang, J., & Roberts, C. (2015). 3D printing of tablets containing multiple drugs with defined release profiles. International Journal of Pharmaceutics, 494(2), 643-650. doi:10.1016/j.ijpharm.2015.07.067

3D printing of five-in-one dose combination polypill with defined immediate and sustained release profiles (2015)
Journal Article
Khaled, S. A., Burley, J. C., Alexander, M. R., Yang, J., & Roberts, C. J. (in press). 3D printing of five-in-one dose combination polypill with defined immediate and sustained release profiles. Journal of Controlled Release, 217, https://doi.org/10.1016/j.jconrel.2015.09.028

We have used three dimensional (3D) extrusion printing to manufacture a multi-active solid dosage form or so called polypill. This contains five compartmentalised drugs with two independently controlled and well-defined release profiles. This polypil... Read More about 3D printing of five-in-one dose combination polypill with defined immediate and sustained release profiles.

Facile approach to generating polymeric nanoarrays containing populations of nanoparticles (2015)
Journal Article
Marques, L., Chen, X., Roberts, C. J., Clark, M., & Aylott, J. W. (2015). Facile approach to generating polymeric nanoarrays containing populations of nanoparticles. Micro and Nano Letters, 10(8), 378-383. doi:10.1049/mnl.2015.0041

The production of nanoarrays containing a population of entrapped, heterogeneous nanoparticles is reported. The nanoarray consists of a nanoporous film with pores of diameter 60-180 nm, formed from the phase separation of two immiscible polymers: pol... Read More about Facile approach to generating polymeric nanoarrays containing populations of nanoparticles.

Long-term amorphous drug stability predictions using easily calculated, predicted, and measured parameters (2015)
Journal Article
Nurzy?ska, K., Booth, J., Roberts, C., McCabe, J., Dryden, I., & Fischer, P. M. (2015). Long-term amorphous drug stability predictions using easily calculated, predicted, and measured parameters. Molecular Pharmaceutics, 12(9), 3389-3398. doi:10.1021/acs.molpharmaceut.5b00409

Electrospray deposition in vacuum as method to create functionally active protein immobilization on polymeric substrates (2015)
Journal Article
Fornari, E., Roberts, C. J., Temperton, R. H., & O’Shea, J. N. (2015). Electrospray deposition in vacuum as method to create functionally active protein immobilization on polymeric substrates. Journal of Colloid and Interface Science, 453, 252-259. https://doi.org/10.1016/j.jcis.2015.05.007

We demonstrate in this work the deposition of a large biological molecule (fibronectin) on polymeric substrates in a high vacuum environment using an electrospray deposition system. Fibronectin was deposited and its distribution and structure investi... Read More about Electrospray deposition in vacuum as method to create functionally active protein immobilization on polymeric substrates.

The Influence of Spray-Drying Parameters on Phase Behavior, Drug Distribution, and In Vitro Release of Injectable Microspheres for Sustained Release (2015)
Journal Article
Roberts, C., Meeus, J., Lenaerts, M., Scurr, D. J., Amssoms, K., Davies, M. C., & Van den mooter, G. (2015). The Influence of Spray-Drying Parameters on Phase Behavior, Drug Distribution, and In Vitro Release of Injectable Microspheres for Sustained Release. Journal of Pharmaceutical Sciences, 104(4), 1451-1460. doi:10.1002/jps.24361

Analysis of leaf surfaces using scanning ion conductance microscopy (2015)
Journal Article
Walker, S. C., Allen, S., Bell, G., & Roberts, C. J. (2015). Analysis of leaf surfaces using scanning ion conductance microscopy. Journal of Microscopy, 258(2), https://doi.org/10.1111/jmi.12225

Leaf surfaces are highly complex functional systems with well defined chemistry and structure dictating the barrier and transport properties of the leaf cuticle. It is a significant imaging challenge to analyse the very thin and often complex wax-lik... Read More about Analysis of leaf surfaces using scanning ion conductance microscopy.

Characterisation of human saliva as a platform for oral dissolution medium development (2015)
Journal Article
Gittings, S., Turnbull, N., Henry, B., Roberts, C. J., & Gershkovich, P. (2015). Characterisation of human saliva as a platform for oral dissolution medium development. European Journal of Pharmaceutics and Biopharmaceutics, 91, 16-24. https://doi.org/10.1016/j.ejpb.2015.01.007

Human saliva is a biological fluid of great importance in the field of dissolution testing. However, until now, no consensus has been reached on its key characteristics relevant to dissolution testing. As a result, it is difficult to select or develo... Read More about Characterisation of human saliva as a platform for oral dissolution medium development.

Study of NAP adsorption and assembly on the surface of HOPG (2014)
Journal Article
Korolkov, V. V., Allen, S., Roberts, C. J., Gozes, I., & Tendler, S. J. (2014). Study of NAP adsorption and assembly on the surface of HOPG. Peptides, 62, 55-58. https://doi.org/10.1016/j.peptides.2014.09.017

NAP is an octapeptide that has demonstrated a neuroprotective/therapeutic efficacy at very low concentrations in preclinical studies and in a number of clinical trials. Yet little is known about its structural organization at low concentrations. Here... Read More about Study of NAP adsorption and assembly on the surface of HOPG.

In vivo evaluation of different formulation strategies for sustained release injectables of a poorly soluble HIV protease inhibitor (2014)
Journal Article
Wuyts, K., Meeus, J., Muees, J., Scurr, D. J., Amssoms, K., Annaert, P., …Van den Mooter, G. (2015). In vivo evaluation of different formulation strategies for sustained release injectables of a poorly soluble HIV protease inhibitor. Journal of Controlled Release, 199, 1-9. https://doi.org/10.1016/j.jconrel.2014.11.020

At present no scientific rationale exists for selecting a particular enabling strategy to formulate a poorly water-soluble drug, although this is crucial as it will influence the in vivo performance of the resulting formulation. This study provides a... Read More about In vivo evaluation of different formulation strategies for sustained release injectables of a poorly soluble HIV protease inhibitor.

Combination of (M)DSC and Surface Analysis to Study the Phase Behaviour and Drug Distribution of Ternary Solid Dispersions (2014)
Journal Article
Meeus, J., Scurr, D. J., Chen, X., Amssoms, K., Davies, M. C., Roberts, C. J., & Mooter, G. V. D. (2015). Combination of (M)DSC and Surface Analysis to Study the Phase Behaviour and Drug Distribution of Ternary Solid Dispersions. Pharmaceutical Research, 32(4), 1407-1416. https://doi.org/10.1007/s11095-014-1543-8

Purpose: Miscibility of the different compounds that make up a solid dispersion based formulation play a crucial role in the drug release profile and physical stability of the solid dispersion as it defines the phase behaviour of the dispersion. The... Read More about Combination of (M)DSC and Surface Analysis to Study the Phase Behaviour and Drug Distribution of Ternary Solid Dispersions.

Bimolecular porous supramolecular networks deposited from solution on layered materials: graphite, boron nitride and molybdenum disulphide (2014)
Journal Article
Korolkov, V. V., Svatek, S. A., Allen, S., Roberts, C. J., Tendler, S. J., Taniguchi, T., …Beton, P. H. (2014). Bimolecular porous supramolecular networks deposited from solution on layered materials: graphite, boron nitride and molybdenum disulphide. Chemical Communications, 50(64), https://doi.org/10.1039/C4CC03720K

A two-dimensional porous network formed from perylene tetracarboxylic diimide (PTCDI) and melamine may be deposited from solution on the surfaces of highly oriented pyrolytic graphite (HOPG), hexagonal boron nitride (hBN) and molybdenum disulphide (... Read More about Bimolecular porous supramolecular networks deposited from solution on layered materials: graphite, boron nitride and molybdenum disulphide.

Desktop 3D printing of controlled release pharmaceutical bilayer tablets (2013)
Journal Article
Khaled, S. A., Burley, J. C., Alexander, M. R., & Roberts, C. J. (2014). Desktop 3D printing of controlled release pharmaceutical bilayer tablets. International Journal of Pharmaceutics, 461(1-2), 105-111. https://doi.org/10.1016/j.ijpharm.2013.11.021

Three dimensional (3D) printing was used as a novel medicine formulation technique for production of viable tablets capable of satisfying regulatory tests and matching the release of standard commercial tablets. Hydroxypropyl methylcellulose (HPMC 22... Read More about Desktop 3D printing of controlled release pharmaceutical bilayer tablets.

Dissolution methodology for taste masked oral dosage forms (2013)
Journal Article
Gittings, S., Turnbull, N., Roberts, C., & Gershkovich, P. (2014). Dissolution methodology for taste masked oral dosage forms. Journal of Controlled Release, 173, 32-42. doi:10.1016/j.jconrel.2013.10.030

Conventional adult dosage forms are often not suitable for the paediatric and geriatric populations due to either swallowing difficulties or patient repulsion and a requirement for tailored dosing to individual compliance or physiological needs. Alte... Read More about Dissolution methodology for taste masked oral dosage forms.

The Bacillus subtilis primosomal protein DnaD untwists supercoiled DNA (2006)
Journal Article
Zhang, W., Allen, S., Roberts, C. J., & Soultanas, P. (2006). The Bacillus subtilis primosomal protein DnaD untwists supercoiled DNA. Journal of Bacteriology, 188(15), https://doi.org/10.1128/JB.00339-06

The essential Bacillus subtilis DnaD and DnaB proteins have been implicated in the initiation of DNA replication. Recently, DNA remodeling activities associated with both proteins were discovered that could provide a link between global or local nucl... Read More about The Bacillus subtilis primosomal protein DnaD untwists supercoiled DNA.

Atomic force microscopy study of human amylin (20-29) fibrils (2005)
Journal Article
Sedman, V. L., Allen, S., Chan, W. C., Davies, M. C., Roberts, C. J., Tendler, S. J., & Williams, P. M. (2005). Atomic force microscopy study of human amylin (20-29) fibrils. Protein and Peptide Letters, 12(1), 79-83. https://doi.org/10.2174/0929866053406129

Here we present atomic force microscopy images of the fibrils formed by human amylin(20-29). This peptide is a fragment of the polypeptide amylin, the major proteinaceous component of amyloid deposits found in cases of type-II diabetes mellitus. Our... Read More about Atomic force microscopy study of human amylin (20-29) fibrils.

DnaG interacts with a linker region that joins the N- and C-domains of DnaB and induces the formation of 3-fold symmetric rings (2004)
Journal Article
Thirlway, J., Turner, I. J., Gibson, C. T., Gardiner, L., Brady, K., Allen, S., …Soultanas, P. (2004). DnaG interacts with a linker region that joins the N- and C-domains of DnaB and induces the formation of 3-fold symmetric rings. Nucleic Acids Research, 32(10),

Loading of the replicative ring helicase onto the origin of replication (oriC) is the final outcome of a well coordinated series of events that collectively constitute a primosomal cascade. Once the ring helicase is loaded, it recruits the primase an... Read More about DnaG interacts with a linker region that joins the N- and C-domains of DnaB and induces the formation of 3-fold symmetric rings.