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Wando Mount Pleasant Library
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Village Library
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St. Paul's/Hollywood Library
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McClellanville Library
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Hurd/St. Andrews Library
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Inhibition of Lck/Fyn kinase activity promotes the differentiation of induced Treg cells through AKT/mTOR pathway.
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- Author(s): Qin, Zhen1 (AUTHOR); Hou, Ping1 (AUTHOR); Lin, Huizhen1 (AUTHOR); Chen, Minghui1 (AUTHOR); Wang, Ruining1 (AUTHOR); Xu, Tao1 (AUTHOR)
- Source:
International Immunopharmacology. Jun2024, Vol. 134, pN.PAG-N.PAG. 1p.- Subject Terms:
- Source:
- Additional Information
- Abstract: • Pharmacological inhibition of Lck/Fyn kinase promotes iTreg differentiation independent of cell proliferation. • Inhibition of Lck/Fyn promotes the expression of Foxp3 and its target genes and inhibits expression of proinflammatory genes. • Srci1 treatment inhibits AKT/mTOR pathway, through which to promote iTreg differentiation. Regulatory T (Treg) cells are indispensable in maintaining the immune homeostasis and preventing autoimmune diseases. Regulatory T (Treg) cells include thymus derived Treg cells (tTregs) and peripherally induced Treg cells (iTreg), which are differentiated from antigen stimulated CD4+ naïve T cells in presence of TGFβ. tTregs are quite stable, and more immune suppressive, while iTreg cells are less stable, and are prone to differentiate into inflammatory T cells. Therefore, identification of small molecules that could promote the differentiation of iTreg cells is an attractive strategy for autoimmune diseases. Inhibition of AKT/mTOR pathway promotes their differentiation. Whether inhibition of Lck/Fyn kinase activity (upstream of AKT/mTOR pathway) can be used to promote the differentiation of iTreg cells has not been determined. Here, we showed that Srci1, a small molecular inhibitor of Lck/Fyn, promoted the differentiation of FOXP3+ iTreg cells. Srci1 treatment resulted in inhibition of phosphorylation of key components of AKT/mTOR pathway, including mTOR, p70 S6K, 4EBP1, and promoted the expression of Foxp3 and its target genes, thereby promoted differentiation of in vitro iTreg cells. Srci1 treated iTreg cells showed more similar gene expression profile to that of tTreg cells. Our results thus suggest that inhibition of Lck/Fyn kinase activity can promote the differentiation of iTreg cells, and may have implication in autoimmune diseases. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of International Immunopharmacology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Abstract:
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