Skip to main content

Research Repository

Advanced Search

All Outputs (59)

Spatially resolved molecular analysis of host response to medical device implantation using the 3D OrbiSIMS highlights a critical role for lipids (2024)
Journal Article
Suvannapruk, W., Fisher, L. E., Luckett, J. C., Edney, M. K., Kotowska, A. M., Kim, D., …Alexander, M. R. (in press). Spatially resolved molecular analysis of host response to medical device implantation using the 3D OrbiSIMS highlights a critical role for lipids. Advanced Science, https://doi.org/10.1101/2023.08.18.553860

A key goal for implanted medical devices is that they do not elicit a detrimental immune response. Macrophages play critical roles in modulation of the host immune response and are the major cells responsible for persistent inflammatory reactions to... Read More about Spatially resolved molecular analysis of host response to medical device implantation using the 3D OrbiSIMS highlights a critical role for lipids.

Targeted intradermal delivery of alpha-arbutin-loaded dissolving polymeric microneedles visualized by three-dimensional Orbitrap secondary ion mass spectrometry (3D OrbiSIMS) (2024)
Journal Article
Li, Z., Marlow, M., Scurr, D., & Zhu, Z. (2024). Targeted intradermal delivery of alpha-arbutin-loaded dissolving polymeric microneedles visualized by three-dimensional Orbitrap secondary ion mass spectrometry (3D OrbiSIMS). European Journal of Pharmaceutics and Biopharmaceutics, 196, Article 114181. https://doi.org/10.1016/j.ejpb.2024.114181

Hyperpigmentation, a prevalent dermatological condition characterized by melanin overproduction, poses treatment challenges due to the hydrophilicity of alpha-arbutin, a widely utilized tyrosinase inhibitor. This study investigates... Read More about Targeted intradermal delivery of alpha-arbutin-loaded dissolving polymeric microneedles visualized by three-dimensional Orbitrap secondary ion mass spectrometry (3D OrbiSIMS).

Toward Comprehensive Analysis of the 3D Chemistry of Pseudomonas aeruginosa Biofilms (2023)
Journal Article
Kotowska, A. M., Zhang, J., Carabelli, A., Watts, J., Aylott, J. W., Gilmore, I. S., …Alexander, M. R. (2023). Toward Comprehensive Analysis of the 3D Chemistry of Pseudomonas aeruginosa Biofilms. Analytical Chemistry, 95(49), 18287-18294. https://doi.org/10.1021/acs.analchem.3c04443

Bacterial biofilms are structured communities consisting of cells enmeshed in a self-generated extracellular matrix usually attached to a surface. They contain diverse classes of molecules including polysaccharides, lipids, proteins, nucleic acids, a... Read More about Toward Comprehensive Analysis of the 3D Chemistry of Pseudomonas aeruginosa Biofilms.

Sustained Release of Dexamethasone from 3D-Printed Scaffolds Modulates Macrophage Activation and Enhances Osteogenic Differentiation (2023)
Journal Article
Majrashi, M., Yang, J., Ghaemmaghami, A., Kotowska, A., Hicks, J. M., & Scurr, D. (2023). Sustained Release of Dexamethasone from 3D-Printed Scaffolds Modulates Macrophage Activation and Enhances Osteogenic Differentiation. ACS Applied Materials and Interfaces, 15(49), 56623–56638. https://doi.org/10.1021/acsami.3c09774

Enhancing osteogenesis via modulating immune cells is emerging as a new approach to address current challenges in repairing bone defects and fractures. However, much remains unknown about the crosstalk between immune cells and osteolineage cells duri... Read More about Sustained Release of Dexamethasone from 3D-Printed Scaffolds Modulates Macrophage Activation and Enhances Osteogenic Differentiation.

Dissociative Host-Dopant Bonding Facilitates Molecular Doping in Halide Perovskites (2023)
Journal Article
Lanzetta, L., Gregori, L., Hernandez, L. H., Sharma, A., Kern, S., Kotowska, A. M., …Baran, D. (2023). Dissociative Host-Dopant Bonding Facilitates Molecular Doping in Halide Perovskites. ACS Energy Letters, 8, 2858-2867. https://doi.org/10.1021/acsenergylett.3c00818

Molecular doping is a promising strategy to fine-tune the electronic properties of halide perovskites and accelerate their implementation as next-generation optoelectronics. However, a deeper understanding of the role of host-dopant interactions in t... Read More about Dissociative Host-Dopant Bonding Facilitates Molecular Doping in Halide Perovskites.

Development of biocide coated polymers and their antimicrobial efficacy (2023)
Journal Article
Watson, R., Maxwell, M., Dunn, S., Brooks, A., Jiang, L., Hill, H. J., …de Cogan, F. (2023). Development of biocide coated polymers and their antimicrobial efficacy. Nano Select, 4(7), 442-453. https://doi.org/10.1002/nano.202300005

Microbial contamination of plastic surfaces is a significant source of hospital‐acquired infections. To produce antimicrobial surfaces, chlorhexidine was attached to nitrided acrylonitrile butadiene styrene (ABS). The uniformity of chlorhexidine dist... Read More about Development of biocide coated polymers and their antimicrobial efficacy.

Untargeted Metabolomic Characterization of Glioblastoma Intra-Tumor Heterogeneity Using OrbiSIMS (2023)
Journal Article
He, W., Edney, M. K., Paine, S. M. L., Griffiths, R. L., Scurr, D. J., Rahman, R., & Kim, D. (2023). Untargeted Metabolomic Characterization of Glioblastoma Intra-Tumor Heterogeneity Using OrbiSIMS. Analytical Chemistry, 95(14), 5994-6001. https://doi.org/10.1021/acs.analchem.2c05807

Glioblastoma (GBM) is an incurable brain cancer with a median survival of less than two years from diagnosis. The standard treatment of GBM is multimodality therapy comprising surgical resection, radiation, and chemotherapy. However, prognosis remain... Read More about Untargeted Metabolomic Characterization of Glioblastoma Intra-Tumor Heterogeneity Using OrbiSIMS.

Design, Synthesis, and Biological Evaluation of Novel Hybrids Containing Dihydrochalcone as Tyrosinase Inhibitors to Treat Skin Hyperpigmentation (2023)
Journal Article
Xue, S., Li, Z., Ze, X., Wu, X., He, C., Shuai, W., …Xu, S. (2023). Design, Synthesis, and Biological Evaluation of Novel Hybrids Containing Dihydrochalcone as Tyrosinase Inhibitors to Treat Skin Hyperpigmentation. Journal of Medicinal Chemistry, 66(7), 5099–5117. https://doi.org/10.1021/acs.jmedchem.3c00012

Excessive melanin deposition may lead to a series of skin disorders. The production of melanin is carried out by melanocytes, in which the enzyme tyrosinase performs a key role. In this work, we identified a series of novel tyrosinase inhibitor hybri... Read More about Design, Synthesis, and Biological Evaluation of Novel Hybrids Containing Dihydrochalcone as Tyrosinase Inhibitors to Treat Skin Hyperpigmentation.

Identifying new biomarkers of aggressive Group 3 and SHH medulloblastoma using 3D hydrogel models, single cell RNA sequencing and 3D OrbiSIMS imaging (2023)
Journal Article
Linke, F., Johnson, J. E. C., Kern, S., Bennett, C. D., Lourdusamy, A., Lea, D., …Coyle, B. (2023). Identifying new biomarkers of aggressive Group 3 and SHH medulloblastoma using 3D hydrogel models, single cell RNA sequencing and 3D OrbiSIMS imaging. Acta Neuropathologica Communications, 11(1), Article 6. https://doi.org/10.1186/s40478-022-01496-4

The most common malignant brain tumour in children, medulloblastoma (MB), is subdivided into four clinically relevant molecular subgroups, although targeted therapy options informed by understanding of different cellular features are lacking. Here, b... Read More about Identifying new biomarkers of aggressive Group 3 and SHH medulloblastoma using 3D hydrogel models, single cell RNA sequencing and 3D OrbiSIMS imaging.

Development of nanoparticle loaded microneedles for drug delivery to a brain tumour resection site (2022)
Journal Article
Muresan, P., McCrorie, P., Smith, F., Vasey, C., Taresco, V., Scurr, D. J., …Marlow, M. (2023). Development of nanoparticle loaded microneedles for drug delivery to a brain tumour resection site. European Journal of Pharmaceutics and Biopharmaceutics, 182, 53-61. https://doi.org/10.1016/j.ejpb.2022.11.016

Systemic drug delivery to the central nervous system (CNS) has been historically impeded by the presence of the blood brain barrier rendering many therapies inefficacious to any cancer cells residing within the brain. Therefore, local drug delivery s... Read More about Development of nanoparticle loaded microneedles for drug delivery to a brain tumour resection site.

Metabolic alterations in dairy cattle with lameness revealed by untargeted metabolomics of dried milk spots using direct infusion-tandem mass spectrometry and the triangulation of multiple machine learning models (2022)
Journal Article
He, W., Cardoso, A. S., Hyde, R. M., Green, M. J., Scurr, D. J., Griffiths, R., …Kim, D. (2022). Metabolic alterations in dairy cattle with lameness revealed by untargeted metabolomics of dried milk spots using direct infusion-tandem mass spectrometry and the triangulation of multiple machine learning models. Analyst, 147(23), 5537-5545. https://doi.org/10.1039/d2an01520j

Lameness is a major challenge in the dairy cattle industry in terms of animal welfare and economic implications. Better understanding of metabolic alteration associated with lameness could lead to early diagnosis and effective treatment{,} there-fore... Read More about Metabolic alterations in dairy cattle with lameness revealed by untargeted metabolomics of dried milk spots using direct infusion-tandem mass spectrometry and the triangulation of multiple machine learning models.

Single-Cell Metabolic Profiling of Macrophages Using 3D OrbiSIMS: Correlations with Phenotype (2022)
Journal Article
Suvannapruk, W., Edney, M. K., Kim, D., Scurr, D. J., Ghaemmaghami, A. M., & Alexander, M. R. (2022). Single-Cell Metabolic Profiling of Macrophages Using 3D OrbiSIMS: Correlations with Phenotype. Analytical Chemistry, 94(26), 9389–9398. https://doi.org/10.1021/acs.analchem.2c01375

Macrophages are important immune cells that respond to environmental cues acquiring a range of activation statuses represented by pro-inflammatory (M1) and anti-inflammatory (M2) phenotypes at each end of their spectrum. Characterizing the metabolic... Read More about Single-Cell Metabolic Profiling of Macrophages Using 3D OrbiSIMS: Correlations with Phenotype.

Distribution of a highly lipophilic drug cannabidiol into different lymph nodes following oral administration in lipidic vehicle (2022)
Journal Article
Jewell, A., Brookes, A., Feng, W., Ashford, M., Gellert, P., Butler, J., …Gershkovich, P. (2022). Distribution of a highly lipophilic drug cannabidiol into different lymph nodes following oral administration in lipidic vehicle. European Journal of Pharmaceutics and Biopharmaceutics, 174, 29-34. https://doi.org/10.1016/j.ejpb.2022.03.014

Efficient delivery of highly lipophilic drugs or prodrugs to the mesenteric lymph nodes (MLN) can be achieved following oral administration with lipids. However, it remains unclear which specific MLN can be targeted and to what extent. Moreover, the... Read More about Distribution of a highly lipophilic drug cannabidiol into different lymph nodes following oral administration in lipidic vehicle.

Elucidating the molecular landscape of the stratum corneum (2022)
Journal Article
Starr, N. J., Khan, M. H., Edney, M. K., Trindade, G. F., Kern, S., Pirkl, A., …Scurr, D. J. (2022). Elucidating the molecular landscape of the stratum corneum. Proceedings of the National Academy of Sciences, 119(12), Article e2114380119. https://doi.org/10.1073/pnas.2114380119

Characterization of the molecular structure of skin, especially the barrier layer, the stratum corneum, is a key research priority for generating understanding to improve diagnostics, aid pharmaceutical delivery, and prevent environmental damage. Our... Read More about Elucidating the molecular landscape of the stratum corneum.

Molecular Formula Prediction for Chemical Filtering of 3D OrbiSIMS Datasets (2022)
Journal Article
Edney, M. K., Kotowska, A. M., Spanu, M., Trindade, G. F., Wilmot, E., Reid, J., …Scurr, D. J. (2022). Molecular Formula Prediction for Chemical Filtering of 3D OrbiSIMS Datasets. Analytical Chemistry, 94(11), 4703–4711. https://doi.org/10.1021/acs.analchem.1c04898

Modern mass spectrometry techniques produce a wealth of spectral data, and although this is an advantage in terms of the richness of the information available, the volume and complexity of data can prevent a thorough interpretation to reach useful co... Read More about Molecular Formula Prediction for Chemical Filtering of 3D OrbiSIMS Datasets.

Efficacy of antimicrobial and anti-viral coated air filters to prevent the spread of airborne pathogens (2022)
Journal Article
Watson, R., Oldfield, M., Bryant, J. A., Riordan, L., Hill, H. J., Watts, J. A., …de Cogan, F. (2022). Efficacy of antimicrobial and anti-viral coated air filters to prevent the spread of airborne pathogens. Scientific Reports, 12(1), Article 2803. https://doi.org/10.1038/s41598-022-06579-9

The COVID-19 pandemic has demonstrated the real need for mechanisms to control the spread of airborne respiratory pathogens. Thus, preventing the spread of disease from pathogens has come to the forefront of the public consciousness. This has brought... Read More about Efficacy of antimicrobial and anti-viral coated air filters to prevent the spread of airborne pathogens.

Detection of Label-Free Drugs within Brain Tissue Using Orbitrap Secondary Ion Mass Spectrometry as a Complement to Neuro-Oncological Drug Delivery (2022)
Journal Article
McCrorie, P., Rowlinson, J., Scurr, D. J., Marlow, M., & Rahman, R. (2022). Detection of Label-Free Drugs within Brain Tissue Using Orbitrap Secondary Ion Mass Spectrometry as a Complement to Neuro-Oncological Drug Delivery. Pharmaceutics, 14(3), Article 571. https://doi.org/10.3390/pharmaceutics14030571

Historically, pre-clinical neuro-oncological drug delivery studies have exhaustively relied upon overall animal survival as an exclusive measure of efficacy. However, with no adopted methodology to both image and quantitate brain parenchyma penetrati... Read More about Detection of Label-Free Drugs within Brain Tissue Using Orbitrap Secondary Ion Mass Spectrometry as a Complement to Neuro-Oncological Drug Delivery.

Quantifiable correlation of ToF-SIMS and XPS data from polymer surfaces with controlled amino acid and peptide content (2022)
Journal Article
Taylor, M., Simoes, F., Smith, J., Genapathy, S., Canning, A., Lledos, M., …Zelzer, M. (2022). Quantifiable correlation of ToF-SIMS and XPS data from polymer surfaces with controlled amino acid and peptide content. Surface and Interface Analysis, 54(4), 417-432. https://doi.org/10.1002/sia.7052

Peptide-coated surfaces are widely employed in biomaterial design, but quantifiable correlation between surface composition and biological response is challenging due to, for example, instrumental limitations, a lack of suitable model surfaces or lim... Read More about Quantifiable correlation of ToF-SIMS and XPS data from polymer surfaces with controlled amino acid and peptide content.

Imaging mass spectrometry of fingermarks on brass bullet casings using sample rotation (2021)
Journal Article
Lee, C. J., Scurr, D. J., Jiang, L., Kenton, A., Beebe, S. R. T., & Sharp, J. S. (2021). Imaging mass spectrometry of fingermarks on brass bullet casings using sample rotation. Analyst, 146(24), 7563-7572. https://doi.org/10.1039/d1an01768c

A rotation stage was developed to allow the surface of bullet casings to be imaged under ultra-high vacuum (UHV) conditions using time-of-flight secondary ion mass spectrometry (ToF-SIMS). Experiments were performed over a period of seven months to d... Read More about Imaging mass spectrometry of fingermarks on brass bullet casings using sample rotation.

A new particle mounting method for surface analysis (2021)
Journal Article
Dundas, A. A., Kern, S., Cuzzucoli Crucitti, V., Scurr, D. J., Wildman, R., Irvine, D. J., & Alexander, M. R. (2022). A new particle mounting method for surface analysis. Surface and Interface Analysis, 54(4), 374-380. https://doi.org/10.1002/sia.7010

The chemical analysis of microparticles is challenging due to the need to mount the particles on a substrate for analysis; double-sided adhesive tape is often used (sometimes conductive), however that is usually coated with poly (dimethyl siloxane) (... Read More about A new particle mounting method for surface analysis.