Human T Cells and Immune Regulation
نویسنده
چکیده
Human T cells appear to belong to non-classical T cells with both innate and adaptive immune features. V 2V 2 (also termed V 9V 2) T cell subset exists only in primates, and in humans that represents a major T cell subpopulation in the blood. V 2V 2 T cells remain to be the only T cell subpopulation that can recognize a welldefined foreign microbial phosphoantigen. This article reviews the recent progress in our understanding immune regulation of V 2V 2 T cells.
منابع مشابه
The Role of Interleukin (IL-22) in immune response to human diseases
Background and aims: IL-22 is an alpha- helical cytokine. IL-22 binds to a heterodimeric cell surface receptor composed of IL-10R2 and IL-22R1subunits. IL-22R is expressed on tissue cells, and it is absent on immune cells. L-22 and IL-10 receptor chains play a role in cellular targeting and signal transduction to selectively initiate and regulate immune responses. The aim of this study was to i...
متن کاملProducing Soluble Human Programmed Cell Death Protein-1: A Natural supporter for CD4+T cell Cytotoxicity and Tumor Cells Apoptosis
Background: Programmed cell death protein-1 (PD-1)/PD-L1 pathway is one of the immune checkpoint pathways involved in regulation of the immune responses and suppression of anti-tumor defense. PD-1/B7-H1-blocking antibodies improve immune responses such as cytotoxic activity of CD8+/CD4+T cells and also increase mortality of tumor cells; however their use is accompanied by adverse effects in pat...
متن کاملHuman Papillomavirus and Cancer - Immunological Consequences of MHC Class I Down-Regulation
Few studies have been conducted on the causative factors associated with the development of cancer. Infection by high risk human papillomaviruses (HPVs) have been implicated as causative agents in a variety of cancers. HPV is capable of evading immune system and establishing persistent infections. Prolonged infection and lesion maintenance are associated with higher risk of neoplastic progressi...
متن کاملHuman Leukocyte Antigen-G Expression on Dendritic Cells Induced by Transforming Growth Factor-β1 and CD4+ T Cells Proliferation
Background: During antigen capture and processing, mature dendritic cells (DC) express large amounts of peptide-MHC complexes and accessory molecules on their surface. DC are antigen-presenting cells that have an important role in tolerance and autoimmunity. The transforming growth factor-beta1 (TGF-β1) cytokine has a regulatory role on the immune and non-immune cells. The aim of this study is ...
متن کاملP38: The Immunoregulatory Effect of Cyclic Dinucleotides on Human Immune Cells
In multiple sclerosis (MS) beneficial effects have been assigned to the interferon (IFN)-I subclass IFN-ß, making its administration a first-line disease-modifying treatment in MS. IFN-I responses can be induced by cyclic-dinucleotide (CDN) triggered activation of Stimulator-of-interferon-genes (STING) and have essential immunomodulatory effects. A beneficial effect of STING activation on...
متن کاملThe role of vitamin D3 and vitamin B9 (Folic acid) in immune system
Background and aims: Vitamins are essential constituents of our diet that Longley have been known to influence the immune system. Vitamin D3 and B9 have received particular attention in recent years as these vitamins have been shown to have an unexpected and crucial effect on the immune response. 1, 25(OH)2D3 metabolizing enzymes and vitamin D r...
متن کامل