All Outputs (135)

Biocompatible unimolecular micelles obtained via the Passerini reaction as versatile nanocarriers for potential medical applications (2018)
Journal Article
Oelmann, S., Travanut, A., Barther, D., Romero, M., Howdle, S. M., Alexander, C., & Meier, M. A. (2019). Biocompatible unimolecular micelles obtained via the Passerini reaction as versatile nanocarriers for potential medical applications. Biomacromolecules, 20(1), 90-101. https://doi.org/10.1021/acs.biomac.8b00592

A Passerini three-component polymerization was performed for the synthesis of amphiphilic star-shaped block copolymers with hydrophobic cores and hydrophilic coronae. The degree of polymerization of the hydrophobic core was varied from 5 to 10 repeat... Read More about Biocompatible unimolecular micelles obtained via the Passerini reaction as versatile nanocarriers for potential medical applications.

High-Throughput Miniaturized Screening of Nanoparticle Formation via Inkjet Printing (2018)
Journal Article
Styliari, I. D., Conte, C., Pearce, A. K., Hüsler, A., Cavanagh, R. J., Limo, M. J., …Taresco, V. (2018). High-Throughput Miniaturized Screening of Nanoparticle Formation via Inkjet Printing. Macromolecular Materials and Engineering, 303(8), 1-9. https://doi.org/10.1002/mame.201800146

The self‐assembly of specific polymers into well‐defined nanoparticles (NPs) is of great interest to the pharmaceutical industry as the resultant materials can act as drug delivery vehicles. In this work, a high‐throughput method to screen the abilit... Read More about High-Throughput Miniaturized Screening of Nanoparticle Formation via Inkjet Printing.

Star-shaped poly(oligoethylene glycol) copolymer-based gels: thermo-responsive behaviour and bioapplicability for risedronate intranasal delivery (2018)
Journal Article
Soliman, M. E., Elmowafy, E., Casettari, L., & Alexander, C. (2018). Star-shaped poly(oligoethylene glycol) copolymer-based gels: thermo-responsive behaviour and bioapplicability for risedronate intranasal delivery. International Journal of Pharmaceutics, 543(1-2), https://doi.org/10.1016/j.ijpharm.2018.03.053

The aim of this work was to obtain an intranasal delivery system with improved mechanical and mucoadhesive properties that could provide prolonged retention time for the delivery of risedronate (RS). For this, novel in situ forming gels comprising th... Read More about Star-shaped poly(oligoethylene glycol) copolymer-based gels: thermo-responsive behaviour and bioapplicability for risedronate intranasal delivery.

Enhanced uptake in 2D- and 3D- lung cancer cell models of redox responsive PEGylated nanoparticles with sensitivity to reducing extra-and intracellular environments (2018)
Journal Article
Conte, C., Mastrotto, F., Taresco, V., Tchoryk, A., Quaglia, F., Stolnik, S., & Alexander, C. (2018). Enhanced uptake in 2D- and 3D- lung cancer cell models of redox responsive PEGylated nanoparticles with sensitivity to reducing extra-and intracellular environments. Journal of Controlled Release, 277, 126-141. https://doi.org/10.1016/j.jconrel.2018.03.011

In the treatment of lung cancer, there is an urgent need of innovative medicines to optimize pharmacological responses of conventional chemotherapeutics while attenuating side effects. Here, we have exploited some relatively unexplored subtle differe... Read More about Enhanced uptake in 2D- and 3D- lung cancer cell models of redox responsive PEGylated nanoparticles with sensitivity to reducing extra-and intracellular environments.

Switching of Macromolecular Ligand Display by Thermoresponsive Polymers Mediates Endocytosis of Multiconjugate Nanoparticles (2018)
Journal Article
Sayers, E., Magnusson, J. P., Moody, P., Mastrotto, F., Conte, C., Brazzale, C., …Alexander, C. (2018). Switching of Macromolecular Ligand Display by Thermoresponsive Polymers Mediates Endocytosis of Multiconjugate Nanoparticles. Bioconjugate Chemistry, 29(4), 1030-1046. https://doi.org/10.1021/acs.bioconjchem.7b00704

© 2018 American Chemical Society. Ligand-mediated targeting and internalization of plasma membrane receptors is central to cellular function. These types of receptors have accordingly been investigated as targets to facilitate entry of diagnostic and... Read More about Switching of Macromolecular Ligand Display by Thermoresponsive Polymers Mediates Endocytosis of Multiconjugate Nanoparticles.

Water solubility enhancement of pyrazolo[3,4-d]pyrimidine derivatives via miniaturized polymer-drug microarrays (2018)
Journal Article
Sanna, M., Sicilia, G., Alazzo, A., Singh, N., Musumeci, F., Schenone, S., …Alexander, C. (in press). Water solubility enhancement of pyrazolo[3,4-d]pyrimidine derivatives via miniaturized polymer-drug microarrays. ACS Medicinal Chemistry Letters, 9(3), https://doi.org/10.1021/acsmedchemlett.7b00456

A miniaturized assay was optimized to evaluate the enhanced apparent water solubility of pyrazolo[3,4-d]pyrimidine derivatives used extensively as anticancer drug scaffolds. The applied amount of drugs used in the reported strategy ranged from 5-10 ?... Read More about Water solubility enhancement of pyrazolo[3,4-d]pyrimidine derivatives via miniaturized polymer-drug microarrays.

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.

Post-modified polypeptides with UCST-type behavior for control of cell attachment in physiological conditions (2018)
Journal Article
Xue, X., Thiagarajan, L., Dixon, J. E., Saunders, B. R., Shakesheff, K. M., & Alexander, C. (2018). Post-modified polypeptides with UCST-type behavior for control of cell attachment in physiological conditions. Materials, 11(1), Article 95. https://doi.org/10.3390/ma11010095

Upper Critical Solution Temperature (UCST)-type thermally responsive polypeptides (TRPs) with phase transition temperatures around 37 ?C in phosphate-buffered saline (PBS) buffer (pH 7.4, 100 mM) were prepared from poly(L-ornithine) hydrobromide and... Read More about Post-modified polypeptides with UCST-type behavior for control of cell attachment in physiological conditions.

Alkyl-modified oligonucleotides as intercalating vehicles for doxorubicin uptake via albumin binding (2017)
Journal Article
Purdie, L., Alexander, C., Spain, S. G., & Magnusson, J. P. (2018). Alkyl-modified oligonucleotides as intercalating vehicles for doxorubicin uptake via albumin binding. Molecular Pharmaceutics, 15(2), https://doi.org/10.1021/acs.molpharmaceut.7b00805

DNA-based drug delivery vehicles have displayed promise for the delivery of intercalating drugs. Here, we demonstrate that oligonucleotides modified with an alkyl chain can bind to human serum albumin, mimicking the natural binding of fatty acids. Th... Read More about Alkyl-modified oligonucleotides as intercalating vehicles for doxorubicin uptake via albumin binding.

Control of aggregation temperatures in mixed and blended cytocompatible thermoresponsive block co-polymer nanoparticles (2017)
Journal Article
Foralosso, R., Moir, L., Mastrotto, F., Sasso, L., Tchoryk, A., Selo, A., …Alexander, C. (2017). Control of aggregation temperatures in mixed and blended cytocompatible thermoresponsive block co-polymer nanoparticles. Soft Matter, 40(13), https://doi.org/10.1039/c7sm00920h

A small library of thermoresponsive amphiphilic copolymers based on polylactide-block-poly((2-(2-methoxyethoxy)ethyl methacrylate)-co-(oligoethylene glycol methacrylate)) (PLA-b-P(DEGMA)-co-(OEGMA)), was synthesised by copper-mediated controlled radi... Read More about Control of aggregation temperatures in mixed and blended cytocompatible thermoresponsive block co-polymer nanoparticles.

Control of targeting ligand display by pH-responsive polymers on gold nanoparticles mediates selective entry into cancer cells (2017)
Journal Article
Brazzale, C., Mastrotto, F., Moody, P., Watson, P., Balasso, A., Malfanti, A., …Salmaso, S. (in press). Control of targeting ligand display by pH-responsive polymers on gold nanoparticles mediates selective entry into cancer cells. Nanoscale, 9(31), https://doi.org/10.1039/C7NR02595E

Selective targeting of cells for intracellular delivery of therapeutics represents a major challenge for pharmaceutical intervention in disease. Here we show pH triggered receptor-mediated endocytosis of nanoparticles via surface ligand exposure. Gol... Read More about Control of targeting ligand display by pH-responsive polymers on gold nanoparticles mediates selective entry into cancer cells.

Versatile routes to functional RAFT chain transfer agents through the Passerini multicomponent reaction (2017)
Journal Article
Pearce, A. K., Travanut, A., Couturaud, B., Taresco, V., Howdle, S. M., Alexander, M. R., & Alexander, C. (2017). Versatile routes to functional RAFT chain transfer agents through the Passerini multicomponent reaction. ACS Macro Letters, 6(7), 781-785. https://doi.org/10.1021/acsmacrolett.7b00415

The widespread adoption of RAFT polymerization stems partly from the ease and utility of installing a functional chain transfer agent onto the ends of the generated polymer chains. In parallel, the Passerini multicomponent reaction offers great versa... Read More about Versatile routes to functional RAFT chain transfer agents through the Passerini multicomponent reaction.

Polymers for binding of the gram-positive oral pathogen Streptococcus mutans (2017)
Journal Article
Magennis, E. P., Francini, N., Mastrotto, F., Catania, R., Redhead, M., Fernandez-Trillo, F., …Mantovani, G. (2017). Polymers for binding of the gram-positive oral pathogen Streptococcus mutans. PLoS ONE, 12(7), Article e018008. https://doi.org/10.1371/journal.pone.0180087

Streptococcus mutans is the most significant pathogenic bacterium implicated in the formation of dental caries and, both directly and indirectly, has been associated with severe conditions such as multiple sclerosis, cerebrovascular and peripheral ar... Read More about Polymers for binding of the gram-positive oral pathogen Streptococcus mutans.

A design of experiments (DoE) approach to identify the influencing parameters that determine poly-D,L-lactic acid (PDLLA) electrospun scaffold morphologies (2017)
Journal Article
Ruiter, F. A. A., Alexander, C., Rose, F. R., & Segal, J. (2017). A design of experiments (DoE) approach to identify the influencing parameters that determine poly-D,L-lactic acid (PDLLA) electrospun scaffold morphologies. Biomedical Materials, 12(5), Article 055009. https://doi.org/10.1088/1748-605X/aa7b54

Electrospun fibrous materials have increasing applications in regenerative medicine due to the similarity of fibre constructs to the morphology of certain extracellular matrices. Although experimentally the electrospinning method is relatively simple... Read More about A design of experiments (DoE) approach to identify the influencing parameters that determine poly-D,L-lactic acid (PDLLA) electrospun scaffold morphologies.

Rapid nano-gram scale screening method of micro-arrays to evaluate drug-polymer blends using high-throughput printing technology (2017)
Journal Article
Taresco, V., Louzao, I., Scurr, D. J., Turpin, E. R., Laughton, C. A., Alexander, C., …Garnett, M. (in press). Rapid nano-gram scale screening method of micro-arrays to evaluate drug-polymer blends using high-throughput printing technology. Molecular Pharmaceutics, 14(6), https://doi.org/10.1021/acs.molpharmaceut.7b00182

A miniaturized, high-throughput assay was optimized to screen polymer-drug solid dispersions using a 2-D Ink-jet printer. By simply printing nanoliter amounts of polymer and drug solutions onto an inert surface, drug:polymer micro-dots of tunable com... Read More about Rapid nano-gram scale screening method of micro-arrays to evaluate drug-polymer blends using high-throughput printing technology.

Upper critical solution temperature thermo-responsive polymer brushes and a mechanism for controlled cell attachment (2017)
Journal Article
Xue, X., Thiagarajan, L., Braim, S., Saunders, B. R., Shakesheff, K. M., & Alexander, C. (2017). Upper critical solution temperature thermo-responsive polymer brushes and a mechanism for controlled cell attachment. Journal of Materials Chemistry B, 5(25), https://doi.org/10.1039/C7TB00052A

We report the synthesis of thermo-responsive polymer brushes with Upper Critical Solution Temperature (UCST)-type behaviour on glass to provide a new means to control cell attachment. Thermoresponsive poly(N-acryloyl glycinamide)-stat-poly(N-phenylac... Read More about Upper critical solution temperature thermo-responsive polymer brushes and a mechanism for controlled cell attachment.

Engineered Polymer–Transferrin Conjugates as Self-Assembling Targeted Drug Delivery Systems (2017)
Journal Article
Makwana, H., Mastrotto, F., Magnusson, J. P., Sleep, D., Hay, J., Nicholls, K. J., …Alexander, C. (2017). Engineered Polymer–Transferrin Conjugates as Self-Assembling Targeted Drug Delivery Systems. Biomacromolecules, 18(5), 1532-1543. https://doi.org/10.1021/acs.biomac.7b00101

Polymer–protein conjugates can be engineered to self-assemble into discrete and well-defined drug delivery systems, which combine the advantages of receptor targeting and controlled drug release. We designed specific conjugates of the iron-binding an... Read More about Engineered Polymer–Transferrin Conjugates as Self-Assembling Targeted Drug Delivery Systems.

Dually sensitive dextran-based micelles for methotrexate delivery (2017)
Journal Article
Blanco-Fernandez, B., Concheiro, A., Makwana, H., Fernandez-Trillo, F., Alexander, C., & Alvarez-Lorenzo, C. (2017). Dually sensitive dextran-based micelles for methotrexate delivery. RSC Advances, 7(24), https://doi.org/10.1039/c7ra00696a

Temperature-sensitive polymeric micelles were prepared from dextran grafted with poly(N-isopropylacrylamide) (PNIPAAm) or polyethylene glycol methyl ether (PEGMA) via controlled radical polymerization and evaluated as delivery systems of the anticanc... Read More about Dually sensitive dextran-based micelles for methotrexate delivery.

Bioreducible cross-linked core polymer micelles enhance in vitro activity of methotrexate in breast cancer cells (2017)
Journal Article
Gulfam, M., Matini, T., Monteiro, P. F., Riva, R., Collins, H., Spriggs, K., …Alexander, C. (2017). Bioreducible cross-linked core polymer micelles enhance in vitro activity of methotrexate in breast cancer cells. Biomaterials Science, 5, https://doi.org/10.1039/c6bm00888g

Polymer micelles have emerged as promising carriers for controlled release applications, however, several limitations of micelle-based drug delivery have also been reported. To address these issues, we have synthesized a functional biodegradable and... Read More about Bioreducible cross-linked core polymer micelles enhance in vitro activity of methotrexate in breast cancer cells.

Tumour regression and improved gastrointestinal tolerability from controlled release of SN-38 from novel polyoxazoline-modified dendrimers (2016)
Journal Article
England, R. M., Hare, J. I., Barnes, J., Wilson, J., Smith, A., Strittmatter, N., …Ashford, M. B. (2017). Tumour regression and improved gastrointestinal tolerability from controlled release of SN-38 from novel polyoxazoline-modified dendrimers. Journal of Controlled Release, 247, https://doi.org/10.1016/j.jconrel.2016.12.034

Irinotecan is used clinically for the treatment of colorectal cancer; however, its utility is limited by its narrow therapeutic index. We describe the use of a generation 5 l-lysine dendrimer that has been part-modified with a polyoxazoline as a drug... Read More about Tumour regression and improved gastrointestinal tolerability from controlled release of SN-38 from novel polyoxazoline-modified dendrimers.