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高氯酸血竭红素通过p53的积累和半胱天冬酶的激活诱导A375-S2细胞凋亡。

Dracorhodin perchlorate induces A375-S2 cell apoptosis via accumulation of p53 and activation of caspases.

作者信息

Xia Mingyu, Wang Minwei, Tashiro Shin-ichi, Onodera Satoshi, Minami Mutsuhiko, Ikejima Takashi

机构信息

China-Japan Research Institute of Medical and Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang 110016, China.

出版信息

Biol Pharm Bull. 2005 Feb;28(2):226-32. doi: 10.1248/bpb.28.226.

Abstract

Dracorhodin perchlorate, an anthocyanin red pigment, induces human melanoma A375-S2 cell death through the apoptotic pathway. Caspase-3, -8, -9, and -10 inhibitors partially reversed the cell death induced by dracorhodin perchlorate. Caspase-3 and -8 were activated, followed by the degradation of caspase-3 substrates, the inhibitor of caspase-activated DNase, and poly-(ADP-ribose) polymerase. Dracorhodin perchlorate upregulated the expression ratio of Bax/Bcl-2 and significantly increased the expression of p53 and p21(WAF1) proteins. The cell death was partially reduced by the mitogen-activated protein kinase c-JUN NH2-terminal protein kinase (JNK MAPK) inhibitor (SP600125) and p38 MAPK inhibitor (SB 203580), while the MEK inhibitor (PD98059) augmented cell death; the drug induced sustained phosphorylation of JNK and p38 MAPK. Moreover, the Fas agonistic antibody CH-11 has a synergistic effect with dracorhodin perchlorate. The phoshatidylinositol 3-kinase (PI3-K) family inhibitor wortmanin and tyrosine kinase inhibitor genistein rescued the viability loss induced by dracohodin perchlorate. Taken together, dracorhodin perchlorate induces apoptosis in A375-S2 cells via accumulation of p53, alters the Bax/Bcl-2 ratio, and activates caspases and p38/JNK MAPKs.

摘要

高氯酸龙血素,一种花青素红色素,通过凋亡途径诱导人黑色素瘤A375 - S2细胞死亡。半胱天冬酶-3、-8、-9和-10抑制剂部分逆转了高氯酸龙血素诱导的细胞死亡。半胱天冬酶-3和-8被激活,随后半胱天冬酶-3底物、半胱天冬酶激活的脱氧核糖核酸酶抑制剂和聚(ADP - 核糖)聚合酶发生降解。高氯酸龙血素上调了Bax/Bcl - 2的表达比值,并显著增加了p53和p21(WAF1)蛋白的表达。丝裂原活化蛋白激酶c - JUN氨基末端蛋白激酶(JNK MAPK)抑制剂(SP600125)和p38 MAPK抑制剂(SB 203580)部分降低了细胞死亡,而MEK抑制剂(PD98059)增强了细胞死亡;该药物诱导JNK和p38 MAPK持续磷酸化。此外,Fas激动性抗体CH - 11与高氯酸龙血素具有协同作用。磷脂酰肌醇3 -激酶(PI3 - K)家族抑制剂渥曼青霉素和酪氨酸激酶抑制剂染料木黄酮挽救了高氯酸龙血素诱导所致的活力丧失。综上所述,高氯酸龙血素通过p53的积累在A375 - S2细胞中诱导凋亡,改变Bax/Bcl - 2比值,并激活半胱天冬酶和p38/JNK MAPKs。

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