Rapamycin (Sirolimus, AY22989, AY-22989, RAPA)，又称为雷帕霉素或西罗莫司，是一种抗真菌和免疫抑制剂，特异性抑制mTOR蛋白（IC50约为0.1 nM）。Rapamycin与细胞内受体FKBP-12结合形成复合物后，直接作用于mTOR中的FRB（FKBP-12-rapamycin binding）结构域从而抑制蛋白活性。Rapamycin选择性抑制IL-2诱导的p70 S6激酶磷酸化与功能活化，也可以促使4E-BP1/PHAS1去磷酸，从而加强与eIF4E的结合并使之失活。Rapamycin能够阻断蛋白合成，诱导细胞周期停滞在G1期。不同于FK506和其他免疫抑制剂，Rapamycin以非凋亡的方式阻断活化T细胞增殖治疗器官或骨髓移植中发生的排斥反应，比传统治疗方法副作用更少。

参考文献

[1] Kay JE, et al. Inhibition of T and B lymphocyte proliferation by rapamycin. Immunology 72: 544-549 (1991).

[2] Barbet NC, et al. TOR controls translation initiation and early G1 progression in yeast. Mol Biol Cell 7(1): 25-42 (1996).

[3] Guba M, et al. Rapamycin inhibits primary and metastatic tumor growth by antiangiogenesis: involvement of vascular endothelial growth factor. Nat Med 8(2): 128-135 (2002).

[4] Edwards SR, et al. The rapamycin-binding domain of the protein kinase mammalian target of rapamycin is a destabilizing domain. J Biol Chem 282(18): 13395-13401 (2007).

[5] Takeuchi H, et al. Synergistic augmentation of rapamycin-induced autophagy in malignant glioma cells by phosphatidylinositol 3-kinase/protein kinase B inhibitors. Cancer Res 65(8): 3336-3346 (2005).

[6] Phung TL, et al. Pathological angiogenesis is induced by sustained Akt signaling and inhibited by rapamycin. Cancer Cell 10(2): 159-170 (2006).

客户使用本产品发表的科研文献（部分）

1.Wu J, Ni Y, Yang Q, et al. Long-term arsenite exposure decreases autophagy by increased release of Nrf2 in transformed human keratinocytes. Sci Total Environ. 2020 Sep 10;734:139425. IF: 6.551

2.Lin H, Wang T, Ruan Y, et al. Rapamycin Supplementation May Ameliorate Erectile Function in Rats With Streptozotocin–Induced Type 1 Diabetes by Inducing Autophagy and Inhibiting Apoptosis, Endothelial Dysfunction, and Corporal Fibrosis. J Sex Med. 2018 Sep;15(9):1246-1259. IF: 3.339

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