Human Gene Set: BIOCARTA_IL7_PATHWAY

For the Mouse gene set with the same name, see BIOCARTA_IL7_PATHWAY

Standard name BIOCARTA_IL7_PATHWAY
Systematic name M1296
Brief description IL-7 Signal Transduction
Full description or abstract IL-7 is a key cytokine in the immune system, essential for normal development of B cells and T cells. Mice with the IL-7 receptor deleted lack B and T cells. Some humans with SCID (severe combined immunodeficiency disease) also have mutation of their IL-7 receptor gene leading to an absence of T cells and greatly impaired B cell production. The IL-7 receptor includes two polypeptides, a gamma chain and an alpha chain. The alpha-chain is unique to the IL-7 receptor while several other cytokines use the same gamma receptor chain as IL-7, including IL-2, IL-4, IL-9, IL-15 and IL-21. Binding of IL-7 to the alpha chain leads to dimerization of the alpha and gamma chains. JAK3 associated with the gamma chain tyrosine phosphorylates the alpha chain after dimerization. The importance of JAK3 in IL-7 signaling is supported by the similarity of the immune defects in JAK3 knockout mice and IL-7 knockout mice. The phosphorylated alpha chain serves as the site for recruiting other signaling molecules to the complex to be phosphorylated and activated, including STAT5, src kinases, PI3 kinase, Pyk2 and Bcl2 proteins. Some targets of IL-7 signaling contribute to cellular survival, including Bcl2 and Pyk2. Other targets contribute to cellular proliferation, including PI3 kinase, src family kinases (lck and fyn) and STAT5. The transcription factor STAT5 contributes to activation of multiple different downstream genes in B and T cells and may contribute to VDJ recombination through alteration of chromatin structure. The cell survival and cell proliferation signals induced by IL-7 combine to induce normal B and T cell development.
Collection C2: Curated
      CP: Canonical Pathways
            CP:BIOCARTA: BioCarta Pathways
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External links https://data.broadinstitute.org/gsea-msigdb/msigdb/biocarta/human/h_il7Pathway.gif
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Source species Homo sapiens
Contributed by BioCarta
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identifier namespace		 HUMAN_SEQ_ACCESSION
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GTEx compendium
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Version history 7.0: Changed members. Upgraded to final version of Biocarta.


License Terms for BioCarta data in MSigDB

MSigDB gene sets derived from BioCarta pathways are protected by copyright, (c) 2000-2017 BioCarta, all rights reserved. They are provided under license to the Broad Institute, Inc. with qualified permission to include in this release, subject to Biocarta's "Disclaimer of Liability and of Warranties" (formerly found at www.biocarta.com). Inclusion of these gene sets is conditioned upon acknowledgment and retention of the aforementioned copyright, and agreement to such disclaimer. The BioCarta derived gene sets are in the MSigDB C2 and M2 collections, and can be recognized by the "BIOCARTA_" prefix in their name.

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