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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.

Optimization of diffuse Raman spectroscopy for in-vivo quantification of foreign body response in a small animal model (2023)
Journal Article
Dooley, M., Luckett, J., Alexander, M. R., Matousek, P., Dehghani, H., Ghaemmaghami, A. M., & Notingher, I. (2023). Optimization of diffuse Raman spectroscopy for in-vivo quantification of foreign body response in a small animal model. Biomedical Optics Express, 14(12), 6592-6606. https://doi.org/10.1364/boe.512118

Diffuse Raman spectroscopy (DRS) allows subsurface molecular analysis of optically turbid samples. Numerical modeling of light propagation was used as a method for improving the design of an DRS instrument to maximize the signal to noise ratio (SNR)... Read More about Optimization of diffuse Raman spectroscopy for in-vivo quantification of foreign body response in a small animal model.

Optimisation of diffuse Raman spectroscopy for in-vivo quantification of foreign body response in small animal model (2023)
Journal Article
Dooley, M., Luckett, J., Alexander, M. R., Matousek, P., Dehghani, H., Ghaemmaghami, A. M., & Notingher, I. (2023). Optimisation of diffuse Raman spectroscopy for in-vivo quantification of foreign body response in small animal model. Biomedical Optics Express, 14(12), 6592-6606. https://doi.org/10.1364/BOE.512118

Diffuse Raman spectroscopy (DRS) allows subsurface molecular analysis of optically turbid samples. Numerical modelling of light propagation was used as a method for improving the design of an DRS instrument to maximize the signal to noise ratio (SNR)... Read More about Optimisation of diffuse Raman spectroscopy for in-vivo quantification of foreign body response in small animal model.

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.

Co-assembling living material as an in vitro lung epithelial infection model (2023)
Journal Article
Wu, Y., Romero, M., Robertson, S. N., Fenn, S., Fisher, L., Willingham, I., …Mata, A. (2024). Co-assembling living material as an in vitro lung epithelial infection model. Matter, 7(1), 216-236. https://doi.org/10.1016/j.matt.2023.10.029

Biofilms are robust living 3D materials that play key roles in nature but also cause major problems, such as tolerance to antibiotic treatment. Recreation of these living structures in vitro is critical to understand their biology and develop solutio... Read More about Co-assembling living material as an in vitro lung epithelial infection model.

Modelled-Microgravity Reduces Virulence Factor Production in Staphylococcus aureus through Downregulation of agr-Dependent Quorum Sensing (2023)
Journal Article
Green, M. J., Murray, E. J., Williams, P., Ghaemmaghami, A. M., Aylott, J. W., & Williams, P. M. (2023). Modelled-Microgravity Reduces Virulence Factor Production in Staphylococcus aureus through Downregulation of agr-Dependent Quorum Sensing. International Journal of Molecular Sciences, 24(21), Article 15997. https://doi.org/10.3390/ijms242115997

Bacterial contamination during space missions is problematic for human health and damages filters and other vital support systems. Staphylococcus aureus is both a human commensal and an opportunistic pathogen that colonizes human tissues and causes a... Read More about Modelled-Microgravity Reduces Virulence Factor Production in Staphylococcus aureus through Downregulation of agr-Dependent Quorum Sensing.

Innate immune cell instruction using micron-scale 3D objects of varied architecture and polymer chemistry: The ChemoArchiChip (2023)
Journal Article
Vassey, M., Ma, L., Kämmerling, L., Mbadugha, C., Trindade, G. F., Figueredo, G. P., …Alexander, M. R. (2023). Innate immune cell instruction using micron-scale 3D objects of varied architecture and polymer chemistry: The ChemoArchiChip. Matter, 6(3), 887-906. https://doi.org/10.1016/j.matt.2023.01.002

To design effective immunomodulatory implants, innate immune cell interactions at the surface of biomaterials need to be controlled and understood. The architectural design freedom of two-photon polymerization is used to produce arrays of surface-mou... Read More about Innate immune cell instruction using micron-scale 3D objects of varied architecture and polymer chemistry: The ChemoArchiChip.

Microparticles Decorated with Cell‐Instructive Surface Chemistries Actively Promote Wound Healing (2022)
Journal Article
Latif, A., Fisher, L. E., Dundas, A. A., Crucitti, V. C., Imir, Z., Lawler, K., …Ghaemmaghami, A. M. (2022). Microparticles Decorated with Cell‐Instructive Surface Chemistries Actively Promote Wound Healing. Advanced Materials, Article 2208364. https://doi.org/10.1002/adma.202208364

Wound healing is a complex biological process involving close crosstalk between various cell types. Dysregulation in any of these processes, such as in diabetic wounds, results in chronic nonhealing wounds. Fibroblasts are a critical cell type involv... Read More about Microparticles Decorated with Cell‐Instructive Surface Chemistries Actively Promote Wound Healing.

Metabolic Signatures of Surface-Modified Poly(lactic- co-glycolic acid) Nanoparticles in Differentiated THP-1 Cells Derived with Liquid Chromatography-Mass Spectrometry-based Metabolomics (2022)
Journal Article
Al-Natour, M. A., Abdelrazig, S., Ghaemmaghami, A. M., Alexander, C., & Kim, D. H. (2022). Metabolic Signatures of Surface-Modified Poly(lactic- co-glycolic acid) Nanoparticles in Differentiated THP-1 Cells Derived with Liquid Chromatography-Mass Spectrometry-based Metabolomics. ACS Omega, https://doi.org/10.1021/acsomega.2c01660

Polymeric nanoparticles (NPs) are widely used in preclinical drug delivery investigations, and some formulations are now in the clinic. However, the detailed effects of many NPs at the subcellular level have not been fully investigated. In this study... Read More about Metabolic Signatures of Surface-Modified Poly(lactic- co-glycolic acid) Nanoparticles in Differentiated THP-1 Cells Derived with Liquid Chromatography-Mass Spectrometry-based Metabolomics.

Mineralizing Coating on 3D Printed Scaffolds for the Promotion of Osseointegration (2022)
Journal Article
Hasan, A., Bagnol, R., Owen, R., Latif, A., Rostam, H. M., Elsharkawy, S., …Mata, A. (2022). Mineralizing Coating on 3D Printed Scaffolds for the Promotion of Osseointegration. Frontiers in Bioengineering and Biotechnology, 10, Article 836386. https://doi.org/10.3389/fbioe.2022.836386

Design and fabrication of implants that can perform better than autologous bone grafts remain an unmet challenge for the hard tissue regeneration in craniomaxillofacial applications. Here, we report an integrated approach combining additive manufactu... Read More about Mineralizing Coating on 3D Printed Scaffolds for the Promotion of Osseointegration.