CD28受体家族 CD28受体家族（英語：CD28 family receptors）是一类表达在免疫细胞表面的受體，CD28家族也是免疫球蛋白超家族的一员[1] 。 家族的两个成员，CD28和ICOS，能作为T细胞的阳性激活受体，另外三个BTLA[2]、CTLA-4和PD-1则起抑制作用[1]，CD28家族受体的配体通常为B7蛋白质家族[3]。 CD28受体家族在T细胞的发育和增殖中起作用[4]，增强来自T细胞受体（TCR）的信号，以刺激免疫反应[5]，以及对调节性T细胞的抗炎反应。 参考文献 ^ 1.0 1.1 Arch, Robert H.; Green, Jonathan M. Chapter 16: Costimulatory molecules in T-cell activation and transplantation: Section 2: The CD28 receptor family. Burlingham, William J.; Wilkes, David S. (编). Immunobiology of Organ Transplantation. Boston, MA: Springer US. 2012: 292–8. ISBN 978-1-4419-8999-4.  ^ Carreno BM, Collins M. BTLA: a new inhibitory receptor with a B7-like ligand. Trends in Immunology. October 2003, 24 (10): 524–7. PMID 14552835. doi:10.1016/j.it.2003.08.005.  ^ Carreno BM, Collins M. The B7 family of ligands and its receptors: new pathways for costimulation and inhibition of immune responses. Annual Review of Immunology. 2002, 20: 29–53. PMID 11861596. doi:10.1146/annurev.immunol.20.091101.091806.  ^ Wakamatsu E, Omori H, Ohtsuka S, Ogawa S, Green JM, Abe R. Regulatory T cell subsets are differentially dependent on CD28 for their proliferation. Molecular Immunology. September 2018, 101: 92–101. PMID 29909367. doi:10.1016/j.molimm.2018.05.021.  ^ Morin SO, Giroux V, Favre C, Bechah Y, Auphan-Anezin N, Roncagalli R, et al. In the absence of its cytosolic domain, the CD28 molecule still contributes to T cell activation. Cellular and Molecular Life Sciences. July 2015, 72 (14): 2739–48. PMC 4826669 . PMID 25725801. doi:10.1007/s00018-015-1873-7.

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