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16183 Ensembl ENSG00000109471 ENSMUSG00000027720 UniProt P60568 P04351 RefSeq (mRNA) NM_000586 NM_008366 RefSeq (protein) NP_000577 NP_032392 Location (UCSC) Chr 4: 122.45 – 122.46 Mb Chr 3: 37.17 – 37.18 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Interleukin-2 (IL-2) is an interleukin, which is a type of cytokine signaling molecule forming part of the immune system. It is a ...
Once IL-2 binds to the high affinity receptor, the complex is rapidly internalized and has only a short time to signal. IL-2, IL-2Rβ, and γ c are rapidly degraded, but IL-2Rα is recycled to the cell surface. Thus, the concentration of IL-2 and its receptor available determines the tempo, magnitude and extent of T cell immune responses. [3] [4]
[19] [20] High expression of CD25 is also found on TCR activated conventional T cells (both CD8+ and CD4+ T lymphocytes), where it is considered to be a marker of T cell activation. [21] Additionally, expression of the IL-2 receptor alpha subunit can be found in non-lymphoid tissues such as lungs ( alveolar macrophages ), liver ( Kupffer cells ...
Interleukin 10 (IL-10) is a protein that inhibits the synthesis of a number of cytokines, including IFN-gamma, IL-2, IL-3, TNF, and GM-CSF produced by activated macrophages and by helper T cells. In structure, IL-10 is a protein of about 160 amino acids that contains four conserved cysteines involved in disulphide bonds. [ 33 ]
Markers of T cell activation include CD69, CD71 and CD25 (also a marker for Treg cells), and HLA-DR (a marker of human T cell activation). CTLA-4 expression is also up-regulated on activated T cells, which in turn outcompetes CD28 for binding to the B7 proteins. This is a checkpoint mechanism to prevent over activation of the T cell.
Cytokine receptor common subunit gamma also known as interleukin-2 receptor subunit gamma or IL-2RG is a protein that in humans is encoded by the IL2RG gene. [8] The human IL2RG gene is located on the long (q) arm of the X chromosome at position 13.1, from base pair 70,110,279 to base pair 70,114,423.
Activation of T cells without co-stimulation may lead to the unresponsiveness of the T cell (also called anergy), apoptosis or the acquisition of the immune tolerance. [ 3 ] The counterpart of the co-stimulatory signal is a (co-)inhibitory signal, where inhibitory molecules interact with different signaling pathways in order to arrest T cell ...
In addition to ILC2s, ILC1s contribute to the homeostasis of adipose tissue macrophages in both lean and obese conditions, making up 5-10% of the resident lymphocyte population, in human lean adipose depots. [10] A high fat diet increases ILC1 number, and activation of adipose tissue, increasing IFN-γ and TNF-α levels.