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Follicular helper T cells (also known as T follicular helper cells and abbreviated as T FH), are antigen-experienced CD4 + T cells found in the periphery within B cell follicles of secondary lymphoid organs such as lymph nodes, spleen and Peyer's patches, and are identified by their constitutive expression of the B cell follicle homing receptor CXCR5. [1]
The latency-associated peptide (LAP) noncovalently bounds TGF-β and can be expressed by many cells of the immune system. [9] In tumors T h 3 cells can express lymphocyte activation gene-3 (LAG3). T h 3 cells produce vast amounts of TGF-β and to a lesser degree also the anti-inflammatory cytokine interleukin 10 (IL-10).
29851 54167 Ensembl ENSG00000163600 ENSMUSG00000026009 UniProt Q9Y6W8 Q9WVS0 RefSeq (mRNA) NM_012092 NM_017480 RefSeq (protein) NP_036224 NP_059508 Location (UCSC) Chr 2: 203.94 – 203.96 Mb Chr 1: 61.02 – 61.04 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Inducible T-cell costimulator (also called CD278) is an immune checkpoint protein that in humans is encoded by the ICOS (I ...
The latter case induces recognition by antigen-specific Th2 cells or Tfh cells, leading to activation of the B cell through binding of TCR to the MHC-antigen complex. It is followed by synthesis and presentation of CD40L (CD154) on the Th2 cell, which binds to CD40 on the B cell, thus the Th2 cell can co-stimulate the B cell. [11]
The majority of human naive T cells are produced very early in life when the thymus is large and functional. The subsequent decrease in naive T cell production due to involution of the thymus with age is compensated by so called "peripheral proliferation" or "homeostatic proliferation" of naive T cells which have emigrated from the thymus ...
The protein encoded by the BCL6 gene is a zinc finger transcription factor that has three evolutionarily conserved domains. BCL6 contains a (1) N-terminal BTB/POZ domain (Broad-complex, Tramtrack and Brick-a-brac/Pox virus and Zinc finger family domain), (2) a central RN2 region, and (3) another zinc finger at the C-terminal end. [6]
Although the specific composition of TLSs may vary, within the T cell compartment, the dominant subset of T cells is CD4 + T follicular helper (TFH) cells, but certain number of CD8 + cytotoxic T cells, CD4 + T helper 1 (TH1) cells, and regulatory T cells (Tregs) can also be found within the T cell zone. [25] The B cell zone contains two main ...
They include T cells and B cells and are part of the larger category of ‘tumor-infiltrating immune cells’ which consist of both mononuclear and polymorphonuclear immune cells, (i.e., T cells, B cells, natural killer cells, macrophages, neutrophils, dendritic cells, mast cells, eosinophils, basophils, etc.) in variable proportions. Their ...