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Articles 1 - 5 of 5
Full-Text Articles in Allergy and Immunology
T Cell Immunity In Pancreatic Cancer Is Undermined By Dendritic Cell Dysfunction, Samarth Hegde
T Cell Immunity In Pancreatic Cancer Is Undermined By Dendritic Cell Dysfunction, Samarth Hegde
Arts & Sciences Electronic Theses and Dissertations
Pancreatic cancer carries a dismal prognosis, and desperately needs viable therapeutic interventions beyond chemo-radiation. T cell-dependent immunotherapies have shown great promise in several tumor types, but have not been effective for the vast majority of pancreatic cancer patients. This is, in part, due to our limited understanding of how antigenicity of pancreatic lesions is recognized, and how adaptive immunity is overcome in this disease. We sought to study tumor-immune interactions and identify mechanisms for this immune-failure using several spontaneous and unperturbed mouse models of pancreatic adenocarcinoma. We found that early pancreatic lesions fail to elicit tumor-limiting CD4+ TH1 and CD8+ …
Mesothelium-Derived Factors Shape Tissue Resident Macrophage, Chin-Wen Lai
Mesothelium-Derived Factors Shape Tissue Resident Macrophage, Chin-Wen Lai
Arts & Sciences Electronic Theses and Dissertations
The studies outlined in this thesis provide several new insights into Msln-related pathways necessary for peritoneal immune responses and mucosal repair. We found that Msln and its binding partner mucin 16 from mesothelium influenced peritoneal and pleural macrophage differentiation. We found that Msln was required for proper tissue repair after colonic biopsy injury and was required for maximal polyp growth in APCMin/+ mice. Overall, this work describes mesothelial and epithelial-derived factors that are important for tissue resident macrophage differentiation and wound repair after colonic mucosal injury. Understanding the complex interactions between stromal cells and immune cells will lead to better …
Understanding The Transcriptional Mechanisms Underlying Dendritic Cell Development, Prachi Bagadia
Understanding The Transcriptional Mechanisms Underlying Dendritic Cell Development, Prachi Bagadia
Arts & Sciences Electronic Theses and Dissertations
Dendritic cells (DCs) comprise an important immune lineage that plays a critical role in initiating and sustaining the proper immune response. They can be divided into two distinct branches, classical/conventional DCs (cDCs) or plasmacytoid DCs (pDCs). cDCs can further be classified as cDC1 or cDC2. Each DC subset exerts unique functions in vivo and are necessary for a complete immune response. The precise transcriptional programs underlying DC specification and commitment remain unclear. cDC1, cDC2, and pDC all arise from the common DC progenitor (CDP) in the bone marrow. How the CDP gives rise to all three DC subsets in an …
Dissemination Of The Apicomplexan Parasite, Toxoplasma Gondii, Lisa L. Drewry
Dissemination Of The Apicomplexan Parasite, Toxoplasma Gondii, Lisa L. Drewry
Arts & Sciences Electronic Theses and Dissertations
The parasitic protist Toxoplasma gondii is a common pathogen of rodents and felines that also infects humans. The most severe clinical manifestations of toxoplasmosis in humans derive from the systemic dissemination of T. gondii, during which the parasite penetrates biological barriers and accesses protected host compartments such as the central nervous system. T. gondii dissemination is enabled by the intrinsic gliding motility of extracellular parasites, which allows for travel to new host cells and tissues, and also powers the invasion of diverse host cells including migratory leukocytes. Dissemination is further advanced when migrating infected leukocytes shuttle intracellular parasites to new …
Monocytes And Monocyte-Derived Antigen-Presenting Cells Have Distinct Gene Signatures In Experimental Model Of Multiple Sclerosis, Kelly L. Monaghan, Wen Zheng, Gangqing Hu, Edwin C. K. Wan
Monocytes And Monocyte-Derived Antigen-Presenting Cells Have Distinct Gene Signatures In Experimental Model Of Multiple Sclerosis, Kelly L. Monaghan, Wen Zheng, Gangqing Hu, Edwin C. K. Wan
Faculty & Staff Scholarship
Multiple sclerosis (MS) is a chronic inflammatory disease mediated by a complex interaction between the autoreactive lymphocytes and the effector myeloid cells within the central nervous system (CNS). In a murine model of MS, experimental autoimmune encephalomyelitis (EAE), Ly6Chi monocytes migrate into the CNS and further differentiate into antigen-presenting cells (APCs) during disease progression. Currently, there is no information about gene signatures that can distinguish between monocytes and the monocyte-derived APCs. We developed a surface marker-based strategy to distinguish between these two cell types during the stage of EAE when the clinical symptoms were most severe, and performed transcriptome analysis …