All Outputs (129)

Metabolic characterisation of THP-1 macrophage polarisation using LC–MS-based metabolite profiling (2020)
Journal Article
Abuawad, A., Mbadugha, C., Ghaemmaghami, A. M., & Kim, D. (2020). Metabolic characterisation of THP-1 macrophage polarisation using LC–MS-based metabolite profiling. Metabolomics, 16(3), Article 33. https://doi.org/10.1007/s11306-020-01656-4

INTRODUCTION: Macrophages constitute a heterogeneous population of functionally distinct cells involved in several physiological and pathological processes. They display remarkable plasticity by changing their phenotype and function in response to en... Read More about Metabolic characterisation of THP-1 macrophage polarisation using LC–MS-based metabolite profiling.

LC-MS metabolomics comparisons of cancer cell and macrophage responses to methotrexate and polymer-encapsulated methotrexate (2019)
Journal Article
Al-Natour, M. A., Alazzo, A., Ghaemmaghami, A. M., Kim, D.-H., & Alexander, C. (2019). LC-MS metabolomics comparisons of cancer cell and macrophage responses to methotrexate and polymer-encapsulated methotrexate. International Journal of Pharmaceutics: X, 1, Article 100036. https://doi.org/10.1016/j.ijpx.2019.100036

Methotrexate (MTX) is a folate analogue antimetabolite widely used for the treatment of rheumatoid arthritis and cancer. A number of studies have shown that MTX delivered via nanoparticle carriers is more potent against cancer cells than free MTX, a... Read More about LC-MS metabolomics comparisons of cancer cell and macrophage responses to methotrexate and polymer-encapsulated methotrexate.

A composite Gelatin/hyaluronic acid hydrogel as an ECM mimic for developing mesenchymal stem cell derived epithelial tissue patches (2019)
Journal Article
Kumar, P., Ciftci, S., Barthes, J., Knopf-Marques, H., Muller, C. B., Debry, C., …Ghaemmaghami, A. M. (2020). A composite Gelatin/hyaluronic acid hydrogel as an ECM mimic for developing mesenchymal stem cell derived epithelial tissue patches. Journal of Tissue Engineering and Regenerative Medicine, 14(1), 45-57. https://doi.org/10.1002/term.2962

Here we report fabrication of Gelatin based biocomposite films and their application in developing epithelial patches. The films were loaded with an epithelial cell growth factor cocktail and used as an extracellular matrix mimic (ECM mimic) for in v... Read More about A composite Gelatin/hyaluronic acid hydrogel as an ECM mimic for developing mesenchymal stem cell derived epithelial tissue patches.

The Cross-Talk between miR-511-3p and C-Type Lectin Receptors on Dendritic Cells Affects Dendritic Cell Function (2019)
Journal Article
Awuah, D., Alobaid, M., Latif, A., Salazar, F., Emes, R. D., & Ghaemmaghami, A. M. (2019). The Cross-Talk between miR-511-3p and C-Type Lectin Receptors on Dendritic Cells Affects Dendritic Cell Function. Journal of Immunology, 203(1), 148-157. https://doi.org/10.4049/jimmunol.1801108

MicroRNAs are small, noncoding RNAs that function as posttranscriptional modulators of gene expression by binding target mRNAs and inhibiting translation. They are therefore crucial regulators of several biological as well as immunological events. Re... Read More about The Cross-Talk between miR-511-3p and C-Type Lectin Receptors on Dendritic Cells Affects Dendritic Cell Function.

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.

Editorial: Adverse reactions to biomaterials: State of the art in biomaterial risk assessment, immunomodulation and in vitro models for biomaterial testing (2019)
Journal Article
Vrana, N. E., Ghaemmaghami, A. M., & Zorlutuna, P. (2019). Editorial: Adverse reactions to biomaterials: State of the art in biomaterial risk assessment, immunomodulation and in vitro models for biomaterial testing. Frontiers in Bioengineering and Biotechnology, 7, Article 15. https://doi.org/10.3389/fbioe.2019.00015

Investigating the intracellular effects of hyperbranched polycation-DNA complexes on lung cancer cells using LC-MS-based metabolite profiling (2019)
Journal Article
Alazzo, A., Al-Natour, M., Spriggs, K., Stolnik, S., Ghaemmaghami, A., Kim, D.-H., & Alexander, C. (2019). Investigating the intracellular effects of hyperbranched polycation-DNA complexes on lung cancer cells using LC-MS-based metabolite profiling. Molecular Omics, 15(1), 77-87. https://doi.org/10.1039/C8MO00139A

Cationic polymers have emerged as a promising alternative to viral vectors in gene therapy. They are cheap to scale up, easy to functionalise and also presume to be safer than the viral vectors, however many of them are cytotoxic. The large number of... Read More about Investigating the intracellular effects of hyperbranched polycation-DNA complexes on lung cancer cells using LC-MS-based metabolite profiling.

A foreign body response-on-a-chip platform (2019)
Journal Article
Sharifi, F., Htwe, S. S., Righi, M., Liu, H., Peietralunga, A., Yesil-Celiktas, O., …Zhang, Y. S. (2019). A foreign body response-on-a-chip platform. Advanced Healthcare Materials, 8(4), 1-10. https://doi.org/10.1002/adhm.201801425

Understanding the foreign body response (FBR) and desiging strategies to modulate such a response represent a grand challenge for implant devices and biomaterials. Here, the development of a microfluidic platform is reported, i.e., the FBR‐on‐a‐chip... Read More about A foreign body response-on-a-chip platform.

New generation of bioreactors that advance extracellular matrix modelling and tissue engineering (2018)
Journal Article
Ahmed, S., Chauhan, V. M., Ghaemmaghami, A. M., & Aylott, J. W. (2019). New generation of bioreactors that advance extracellular matrix modelling and tissue engineering. Biotechnology Letters, 41(1), 1–25. https://doi.org/10.1007/s10529-018-2611-7

Bioreactors hold a lot of promise for tissue engineering and regenerative medicine applications. They have multiple uses including cell cultivation for therapeutic production and for in vitro organ modelling to provide a more physiologically relevant... Read More about New generation of bioreactors that advance extracellular matrix modelling and tissue engineering.

Photocrosslinkable gelatin hydrogels modulate the production of the major pro-inflammatory cytokine, TNF-α, by human mononuclear cells (2018)
Journal Article
Donaldson, A. R., Edi Tanase, C., Awuah, D., Vasanthi Bathri Narayanan, P., Hall, L., Nikkhah, M., Khademhosseini, A., Rose, F., Alexander, C., & Ghaemmaghami, A. M. (2018). Photocrosslinkable gelatin hydrogels modulate the production of the major pro-inflammatory cytokine, TNF-α, by human mononuclear cells. Frontiers in Bioengineering and Biotechnology, 6, Article 116. https://doi.org/10.3389/fbioe.2018.00116

Hydrogels are an attractive class of biomaterials in tissue engineering due to their inherently compatible properties for cell culture. Gelatin methacryloyl (GelMA) has shown significant promise in the fields of tissue engineering and drug delivery,... Read More about Photocrosslinkable gelatin hydrogels modulate the production of the major pro-inflammatory cytokine, TNF-α, by human mononuclear cells.

Holographic optical trapping Raman micro-spectroscopy for non-invasive measurement and manipulation of live cells (2018)
Journal Article
Sinjab, F., Awuah, D., Gibson, G., Padgett, M., Ghaemmaghami, A. M., & Notingher, I. (2018). Holographic optical trapping Raman micro-spectroscopy for non-invasive measurement and manipulation of live cells. Optics Express, 26(19), 25211-25225. https://doi.org/10.1364/oe.26.025211

We present a new approach for combining holographic optical tweezers with confocal Raman spectroscopy. Multiple laser foci, generated using a liquid-crystal spatial light modulator, are individually used for both optical trapping and excitation of sp... Read More about Holographic optical trapping Raman micro-spectroscopy for non-invasive measurement and manipulation of live cells.

Holographic optical trapping Raman micro-spectroscopy for interacting live cells (2018)
Preprint / Working Paper
Sinjab, F., Elsheikha, H. M., Awuah, D., Gibson, G., Padgett, M., Ghaemmaghami, A. M., & Notingher, I. Holographic optical trapping Raman micro-spectroscopy for interacting live cells

We present a combined holographic optical tweezers and confocal Raman spectroscopy instrument which allows fast, flexible, and interactive manipulation with molecular measurement of interacting live cell systems. Multiple laser foci created using a s... Read More about Holographic optical trapping Raman micro-spectroscopy for interacting live cells.

Human dendritic cell sequestration onto the Necator americanus larval sheath during ex-sheathing: a possible mechanism for immune privilege (2018)
Journal Article
Hassan, A., Pritchard, D. I., & Ghaemmaghami, A. M. (2018). Human dendritic cell sequestration onto the Necator americanus larval sheath during ex-sheathing: a possible mechanism for immune privilege. Parasitology, 145(9), 1183-1190. https://doi.org/10.1017/S0031182018000136

Despite the profound health implications of Necator americanus (N. americanus) infection in humans, many aspects of its interaction with the host immune system are poorly understood. Here we investigated the early events at the interface of N. americ... Read More about Human dendritic cell sequestration onto the Necator americanus larval sheath during ex-sheathing: a possible mechanism for immune privilege.

High-throughput approaches for screening and analysis of cell behaviors (2017)
Journal Article
Seo, J., Shin, J. Y., Leijten, J., Jeon, O., Camci-Unal, G., Dikina, A. D., …Khademhosseini, A. (2018). High-throughput approaches for screening and analysis of cell behaviors. Biomaterials, 153, 85-101. https://doi.org/10.1016/j.biomaterials.2017.06.022

The rapid development of new biomaterials and techniques to modify them challenge our capability to characterize them using conventional methods. In response, numerous high-throughput (HT) strategies are being developed to analyze biomaterials and th... Read More about High-throughput approaches for screening and analysis of cell behaviors.

Integrin-mediated interactions control macrophage polarization in 3D hydrogels (2017)
Journal Article
Cha, B.-H., Shin, S. R., Leijten, J., Li, Y.-C., Singh, S., Liu, J. C., …Khademhosseini, A. (2017). Integrin-mediated interactions control macrophage polarization in 3D hydrogels. Advanced Healthcare Materials, 6(21), Article 1700289. https://doi.org/10.1002/adhm.201700289

Adverse immune reactions prevent clinical translation of numerous implantable devices and materials. Although inflammation is an essential part of tissue regeneration, chronic inflammation ultimately leads to implant failure. In particular, macrophag... Read More about Integrin-mediated interactions control macrophage polarization in 3D hydrogels.

Image based machine learning for identification of macrophage subsets (2017)
Journal Article
Rostam, H., Reynolds, P. M., Alexander, M. R., Gadegaard, N., & Ghaemmaghami, A. M. (2017). Image based machine learning for identification of macrophage subsets. Scientific Reports, 7(1), Article 3521. https://doi.org/10.1038/s41598-017-03780-z

Macrophages play a crucial rule in orchestrating immune responses against pathogens and foreign materials. Macrophages have remarkable plasticity in response to environmental cues and are able to acquire a spectrum of activation status, best exemplif... Read More about Image based machine learning for identification of macrophage subsets.

Controlling Incoming Macrophages to Implants: Responsiveness of Macrophages to Gelatin Micropatterns under M1/M2 Phenotype Defining Biochemical Stimulations (2017)
Journal Article
Dollinger, C., Ndreu-Halili, A., Uka, A., Singh, S., Sadam, H., Neuman, T., …Vrana, N. E. (2017). Controlling Incoming Macrophages to Implants: Responsiveness of Macrophages to Gelatin Micropatterns under M1/M2 Phenotype Defining Biochemical Stimulations. Advanced Biosystems, 1(6), Article 1700041. https://doi.org/10.1002/adbi.201700041

Adverse immune reactions to implanted devices can seriously hamper the efficacy of implants. Monocyte derived macrophages play a crucial role in both initiation and resolution of the inflammatory response toward foreign bodies. As the surface microt... Read More about Controlling Incoming Macrophages to Implants: Responsiveness of Macrophages to Gelatin Micropatterns under M1/M2 Phenotype Defining Biochemical Stimulations.

Incorporation of resident macrophages in engineered tissues: Multiple cell type response to microenvironment controlled macrophage-laden gelatine hydrogels (2017)
Journal Article
Dollinger, C., Ciftci, S., Knopf-Marques, H., Ghaemmaghami, A. M., Debry, C., Barthes, J., & Vrana, N. E. (2018). Incorporation of resident macrophages in engineered tissues: Multiple cell type response to microenvironment controlled macrophage-laden gelatine hydrogels. Journal of Tissue Engineering and Regenerative Medicine, 12(2), 330-340. https://doi.org/10.1002/term.2458

The success of tissue engineering strategy is strongly related to the inflammatory response, mainly through the activity of macrophages that are key cells in initial immune response to implants. For engineered tissues, the presence of resident macrop... Read More about Incorporation of resident macrophages in engineered tissues: Multiple cell type response to microenvironment controlled macrophage-laden gelatine hydrogels.

Unbiased analysis of the impact of micropatterned biomaterials on macrophage behaviour provides insights beyond pre-defined polarisation states (2017)
Journal Article
Singh, S., Awuah, D., Rostam, H., Emes, R., Kandola, N. K., Onion, D., …Ghaemmaghami, A. M. (in press). Unbiased analysis of the impact of micropatterned biomaterials on macrophage behaviour provides insights beyond pre-defined polarisation states. ACS Biomaterials Science and Engineering, https://doi.org/10.1021/acsbiomaterials.7b00104

Macrophages are master regulators of immune responses towards implanted biomaterials. The activation state adopted by macrophages in response to biomaterials determines their own phenotype and function as well as those of other resident and infiltrat... Read More about Unbiased analysis of the impact of micropatterned biomaterials on macrophage behaviour provides insights beyond pre-defined polarisation states.

The role of indoleamine 2,3-dioxygenase-aryl hydrocarbon receptor pathway in the TLR4-induced tolerogenic phenotype in human DCs (2017)
Journal Article
Salazar, F., Awuah, D., Negm, O. H., Shakib, F., & Ghaemmaghami, A. M. (2017). The role of indoleamine 2,3-dioxygenase-aryl hydrocarbon receptor pathway in the TLR4-induced tolerogenic phenotype in human DCs. Scientific Reports, 7(1), Article 43337. https://doi.org/10.1038/srep43337

A controlled inflammatory response is required for protection against infection, but persistent inflammation causes tissue damage. Dendritic cells (DCs) have a unique capacity to promote both inflammatory and anti-inflammatory processes. One key mech... Read More about The role of indoleamine 2,3-dioxygenase-aryl hydrocarbon receptor pathway in the TLR4-induced tolerogenic phenotype in human DCs.