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Professor AMIR GHAEMMAGHAMI's Outputs (130)

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.

Role of ROCK isoforms in regulation of stiffness induced myofibroblast differentiation in lung fibrosis (2017)
Journal Article
Htwe, S. S., Cha, B. H., Yue, K., Khademhosseini, A., Knox, A. J., & Ghaemmaghami, A. M. (2017). Role of ROCK isoforms in regulation of stiffness induced myofibroblast differentiation in lung fibrosis. American Journal of Respiratory Cell and Molecular Biology, 56(6), 772-783. https://doi.org/10.1165/rcmb.2016-0306OC

Fibrosis is a major cause of progressive organ dysfunction in several chronic pulmonary diseases. Rho associated coiled-coil forming kinase (ROCK) has shown to be involved in myofibroblast differentiation driven by altered matrix stiffness in fibroti... Read More about Role of ROCK isoforms in regulation of stiffness induced myofibroblast differentiation in lung fibrosis.

Generation of anti-inflammatory macrophages for implants and regenerative medicine using self-standing release systems with a phenotype-fixing cytokine cocktail formulation (2017)
Journal Article
Riabov, V., Salazar, F., Htwe, S. S., Gudima, A., Schmuttermaier, C., Barthes, J., Knopf-Marques, H., Klüter, H., Ghaemmaghami, A. M., Vrana, N. E., & Kzhyshkowska, J. (2017). Generation of anti-inflammatory macrophages for implants and regenerative medicine using self-standing release systems with a phenotype-fixing cytokine cocktail formulation. Acta Biomaterialia, 53, 389-398. https://doi.org/10.1016/j.actbio.2017.01.071

The immediate tissue microenvironment of implanted biomedical devices and engineered tissues is highly influential on their long term fate and efficacy. The creation of a long-term anti-inflammatory microenvironment around implants and artificial tis... Read More about Generation of anti-inflammatory macrophages for implants and regenerative medicine using self-standing release systems with a phenotype-fixing cytokine cocktail formulation.

Electrohydrodynamic printing as a method to micropattern large titanium implant surfaces with photocrosslinkable structures (2017)
Journal Article
Pokorny, M., Klemes, J., Zidek, O., Dollinger, C., Ozcebe, G., Singh, S., Veleby, V., Ghaemmaghami, A. M., Wolfova, L., & Vrana, N. E. (in press). Electrohydrodynamic printing as a method to micropattern large titanium implant surfaces with photocrosslinkable structures. Biomedical Physics and Engineering Express, 3(1), https://doi.org/10.1088/2057-1976/3/1/015002

Metallic implants are widely used in orthopaedic and orthodontic applications. However, generally surface treatment of the metallic surfaces is necessary to render them more biologically active. Herein, we describe a direct write printing method to m... Read More about Electrohydrodynamic printing as a method to micropattern large titanium implant surfaces with photocrosslinkable structures.

A paper-based in vitro model for on-chip investigation of the human respiratory system (2016)
Journal Article
Rahimi, R., Htwe, S. S., Ochoa, M., Donaldson, A., Zieger, M., Sood, R., Tamayol, A., Khademhosseini, A., Ghaemmaghami, A. M., & Ziaie, B. (in press). A paper-based in vitro model for on-chip investigation of the human respiratory system. Lab on a Chip, 16(22), https://doi.org/10.1039/C6LC00866F

Culturing cells at the air–liquid interface (ALI) is essential for creating functional in vitro models of lung tissues. We present the use of direct-patterned laser-treated hydrophobic paper as an effective semi-permeable membrane, ideal for ALI cell... Read More about A paper-based in vitro model for on-chip investigation of the human respiratory system.

Effective antigen presentation to helper T cells by human eosinophils (2016)
Journal Article
Farhan, R. K., Vickers, M. A., Ghaemmaghami, A. M., Hall, A. M., Barker, R. N., & Walsh, G. M. (in press). Effective antigen presentation to helper T cells by human eosinophils. Immunology, https://doi.org/10.1111/imm.12658

Although eosinophils are inflammatory cells, there is increasing attention on their immunomodulatory roles. For example, murine eosinophils can present antigen to CD4+ T helper (Th) cells, but it remains unclear whether human eosinophils also have th... Read More about Effective antigen presentation to helper T cells by human eosinophils.

Expression and regulation of immune-modulatory enzyme Indoleamine 2,3-dioxygenase (IDO) by human airway epithelial cells and its effect on T cell activation (2016)
Journal Article
Aldajani, W. A., Salazar, F., Sewell, H. F., Knox, A., & Ghaemmaghami, A. M. (2016). Expression and regulation of immune-modulatory enzyme Indoleamine 2,3-dioxygenase (IDO) by human airway epithelial cells and its effect on T cell activation. Oncotarget, 7(36), https://doi.org/10.18632/oncotarget.11586

Indoleamine 2,3-dioxygenase (IDO) catalyzes the degradation of tryptophan, which plays a critical role in immune suppression through regulating the production of a series of metabolites that are generally referred to as kynurenines. It has become inc... Read More about Expression and regulation of immune-modulatory enzyme Indoleamine 2,3-dioxygenase (IDO) by human airway epithelial cells and its effect on T cell activation.

The impact of surface chemistry modification on macrophage polarisation (2016)
Journal Article
Rostam, H., Singh, S., Salazar, F., Magennis, P., Hook, A. L., Singh, T., Vrana, N., Alexander, M. R., & Ghaemmaghami, A. M. (2016). The impact of surface chemistry modification on macrophage polarisation. Immunobiology, 221(11), 1237-1246. https://doi.org/10.1016/j.imbio.2016.06.010

Macrophages are innate immune cells that have a central role in combating infection and maintaining tissue homeostasis. They exhibit remarkable plasticity in response to environmental cues. At either end of a broad activation spectrum are pro-inflamm... Read More about The impact of surface chemistry modification on macrophage polarisation.

A low-cost paper-based model for on-chip human respiratory system studies (2016)
Presentation / Conference Contribution
Rahimi, R., Ochoa, M., Htwe, S. S., Donaldson, A., Zieger, M., Dokmeci, M. R., Khademhosseini, A., Sood, R., Ghaemmaghami, A., & Ziaie, B. (2016, June). A low-cost paper-based model for on-chip human respiratory system studies. Presented at Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2016, Hilton Head Island, South Carolina, USA

© 2016 TRF We present the use of hydrophobic paper as an effective semipermeable membrane, ideal for air-liquid interface cell culture applications. The surface properties of the paper is modified through selective CO2 laser-assisted scrubbing to cre... Read More about A low-cost paper-based model for on-chip human respiratory system studies.

Immunomodulation with self-crosslinked polyelectrolyte multilayer-based coatings (2016)
Journal Article
Knopf-Marques, H., Singh, S., Htwe, S. S., Wolfova, L., Buffa, R., Bacharouche, J., Francius, G., Voegel, J.-C., Schaaf, P., Ghaemmaghami, A. M., Vrana, N. E., & Lavalle, P. (2016). Immunomodulation with self-crosslinked polyelectrolyte multilayer-based coatings. Biomacromolecules, 17(6), 2189-2198. https://doi.org/10.1021/acs.biomac.6b00429

This study aims to design an optimal polyelectrolyte multilayer film of poly-L-lysine (PLL) and hyaluronic acid(HA) as an anti-inflammatory cytokine release system in order to decrease the implant failure due to any immune reactions. The chemical mod... Read More about Immunomodulation with self-crosslinked polyelectrolyte multilayer-based coatings.

Engineering Immunomodulatory Biomaterials To Tune the Inflammatory Response (2016)
Journal Article
Vishwakarma, A., Bhise, N. S., Evangelista, M. B., Rouwkema, J., Dokmeci, M. R., Ghaemmaghami, A. M., Vrana, N. E., & Khademhosseini, A. (2016). Engineering Immunomodulatory Biomaterials To Tune the Inflammatory Response. Trends in Biotechnology, 34(6), 470-482. https://doi.org/10.1016/j.tibtech.2016.03.009

Current state-of-the-art biomedical implants and tissue engineering methods promise technologies to improve or even restore the function of diseased organs. However, one of the biggest challenges to clinical success is the lack of functional integrat... Read More about Engineering Immunomodulatory Biomaterials To Tune the Inflammatory Response.

Delivery strategies to control inflammatory response: Modulating M1–M2 polarization in tissue engineering applications (2016)
Journal Article
Alvarez, M. M., Liu, J. C., Trujillo-de Santiago, G., Cha, B. H., Vishwakarma, A., Ghaemmaghami, A. M., & Khademhosseini, A. (2016). Delivery strategies to control inflammatory response: Modulating M1–M2 polarization in tissue engineering applications. Journal of Controlled Release, 240, 349-363. https://doi.org/10.1016/j.jconrel.2016.01.026

Macrophages are key players in many physiological scenarios including tissue homeostasis. In response to injury, typically the balance between macrophage sub-populations shifts from an M1 phenotype (pro-inflammatory) to an M2 phenotype (anti-inflamma... Read More about Delivery strategies to control inflammatory response: Modulating M1–M2 polarization in tissue engineering applications.

The mannose receptor negatively modulates the Toll-like receptor 4–aryl hydrocarbon receptor–indoleamine 2,3-dioxygenase axis in dendritic cells affecting T helper cell polarization (2015)
Journal Article
Salazar, F., Hall, L., Negm, O. H., Awuah, D., Tighe, P. J., Shakib, F., & Ghaemmaghami, A. M. (2016). The mannose receptor negatively modulates the Toll-like receptor 4–aryl hydrocarbon receptor–indoleamine 2,3-dioxygenase axis in dendritic cells affecting T helper cell polarization. Journal of Allergy and Clinical Immunology, 137(6), 1841-1851.e2. https://doi.org/10.1016/j.jaci.2015.10.033

Background: Dendritic cells (DCs) are key players in the induction and re-elicitation of TH2 responses to allergens. We have previously shown that different C-type lectin receptors on DCs play a major role in allergen recognition and uptake. In parti... Read More about The mannose receptor negatively modulates the Toll-like receptor 4–aryl hydrocarbon receptor–indoleamine 2,3-dioxygenase axis in dendritic cells affecting T helper cell polarization.

Adapting the electrospinning process to provide three unique environments for a tri-layered in vitro model of the airway wall (2015)
Journal Article
Bridge, J. C., Aylott, J. W., Brightling, C. E., Ghaemmaghami, A. M., Knox, A. J., Lewis, M. P., Rose, F., & Morris, G. E. (2015). Adapting the electrospinning process to provide three unique environments for a tri-layered in vitro model of the airway wall. Journal of Visualized Experiments, 101, Article e52986. https://doi.org/10.3791/52986

Electrospinning is a highly adaptable method producing porous 3D fibrous scaffolds that can be exploited in in vitro cell culture. Alterations to intrinsic parameters within the process allow a high degree of control over scaffold characteristics inc... Read More about Adapting the electrospinning process to provide three unique environments for a tri-layered in vitro model of the airway wall.

TLR2 stimulation regulates the balance between regulatory T cell and Th17 function: A novel mechanism of reduced regulatory T cell function in multiple sclerosis (2015)
Journal Article
Nyirenda, M. H., Morandi, E., Vinkemeier, U., Constantin-Teodosiu, D., Drinkwater, S., Mee, M., King, L., Podda, G., Zhang, G. X., Ghaemmaghami, A., Constantinescu, C. S., Bar-Or, A., & Gran, B. (2015). TLR2 stimulation regulates the balance between regulatory T cell and Th17 function: A novel mechanism of reduced regulatory T cell function in multiple sclerosis. Journal of Immunology, 194(12), 5761-5774. https://doi.org/10.4049/jimmunol.1400472

CD4+ CD25hi FOXP3+ regulatory T cells (Tregs) maintain tolerance to self-Ags. Their defective function is involved in the pathogenesis of multiple sclerosis (MS), an inflammatory demyelinating disease of the CNS. However, the mechanisms of such defec... Read More about TLR2 stimulation regulates the balance between regulatory T cell and Th17 function: A novel mechanism of reduced regulatory T cell function in multiple sclerosis.

TLR2 Stimulation Regulates the Balance between Regulatory T Cell and Th17 Function: A Novel Mechanism of Reduced Regulatory T Cell Function in Multiple Sclerosis (2015)
Journal Article
Nyirenda, M. H., Morandi, E., Vinkemeier, U., Constantin-Teodosiu, D., Drinkwater, S., Mee, M., King, L., Podda, G., Zhang, G.-X., Ghaemmaghami, A., Constantinescu, C. S., Bar-Or, A., & Gran, B. (2015). TLR2 Stimulation Regulates the Balance between Regulatory T Cell and Th17 Function: A Novel Mechanism of Reduced Regulatory T Cell Function in Multiple Sclerosis. Journal of Immunology, 194(12), 5761-5774. https://doi.org/10.4049/%E2%80%8Bjimmunol.1400472

CD4+CD25hi FOXP3+ regulatory T cells (Tregs) maintain tolerance to self-Ags. Their defective function is involved in the pathogenesis of multiple sclerosis (MS), an inflammatory demyelinating disease of the CNS. However, the mechanisms of such defect... Read More about TLR2 Stimulation Regulates the Balance between Regulatory T Cell and Th17 Function: A Novel Mechanism of Reduced Regulatory T Cell Function in Multiple Sclerosis.

A Janus-paper PDMS platform for air-liquid interface cell culture applications (2015)
Journal Article
Rahimi, R., Ochoa, M., Donaldson, A., Parupudi, T., Dokmeci, M. R., Khademhosseini, A., Ghaemmaghami, A., & Ziaie, B. (2015). A Janus-paper PDMS platform for air-liquid interface cell culture applications. Journal of Micromechanics and Microengineering, 25(5), Article 055015. https://doi.org/10.1088/0960-1317/25/5/055015

© 2015 IOP Publishing Ltd. A commercially available Janus paper with one hydrophobic (polyethylene-coated) face and a hygroscopic/hydrophilic one is irreversibly bonded to a polydimethylsiloxane (PDMS) substrate incorporating microfluidic channels vi... Read More about A Janus-paper PDMS platform for air-liquid interface cell culture applications.

Photocrosslinkable Gelatin Hydrogel for Epidermal Tissue Engineering (2015)
Journal Article
Zhao, X., Lang, Q., Yildirimer, L., Lin, Z. Y., Cui, W., Annabi, N., Ng, K. W., Dokmeci, M. R., Ghaemmaghami, A. M., & Khademhosseini, A. (2016). Photocrosslinkable Gelatin Hydrogel for Epidermal Tissue Engineering. Advanced Healthcare Materials, 5(1), 108-118. https://doi.org/10.1002/adhm.201500005

Natural hydrogels are promising scaffolds to engineer epidermis. Currently, natural hydrogels used to support epidermal regeneration are mainly collagen- or gelatin-based, which mimic the natural dermal extracellular matrix but often suffer from insu... Read More about Photocrosslinkable Gelatin Hydrogel for Epidermal Tissue Engineering.

Nuclear trafficking, histone cleavage and induction of apoptosis by the meningococcal App and MspA autotransporters (2015)
Journal Article
Khairalla, A. S., Omer, S. A., Mahdavi, J., Aslam, A., Dufailu, O. A., Self, T., Jonsson, A.-B., Geörg, M., Sjölinder, H., Royer, P.-J., Martinez-Pomares, L., Ghaemmaghami, A. M., Wooldridge, K. G., Oldfield, N. J., & Ala'Aldeen, D. A. (2015). Nuclear trafficking, histone cleavage and induction of apoptosis by the meningococcal App and MspA autotransporters. Cellular Microbiology, 17(7), 1008-1020. https://doi.org/10.1111/cmi.12417

Neisseria meningitidis, a major cause of bacterial meningitis and septicaemia, secretes multiple virulence factors, including the adhesion and penetration protein (App) and meningococcal serine protease A (MspA). Both are conserved, immunogenic, type... Read More about Nuclear trafficking, histone cleavage and induction of apoptosis by the meningococcal App and MspA autotransporters.