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蟾毒灵增强吉西他滨对胰腺癌的抗肿瘤作用。

Bufalin enhances the antitumor effect of gemcitabine in pancreatic cancer.

作者信息

Chen Ying, Guo Qingqu, Zhang Bo, Kang Muxing, Xie Qiuping, Wu Yulian

机构信息

Department of Surgery, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China.

出版信息

Oncol Lett. 2012 Oct;4(4):792-798. doi: 10.3892/ol.2012.783. Epub 2012 Jul 2.

Abstract

Bufalin, an active component of the Chinese medicine chan'su, has been reported to have an inhibitory effect on the growth of various types of cancer cells. In the present study, we investigated whether gemcitabine combined with bufalin enhanced the antitumor efficacy in pancreatic cancer. Three pancreatic cancer cell lines (Bxpc-3, Mia PaCa-2 and Panc-1) were treated with gemcitabine and/or bufalin in vitro. The combination treatment demonstrated greater inhibition of cellular growth and apoptosis. The activity of apoptosis signal-regulating kinase 1 (ASK1)/JNK was upregulated in gemcitabine-induced apoptosis when combined with bufalin. We also observed that tumor growth was significantly inhibited by the combination therapy in a tumor-bearing mouse model, and upregulation of ASK1 activity was validated by immunohistochemical staining. These results suggest that bufalin may be a potential chemotherapeutic agent for pancreatic cancer, which could enhance the antitumor efficacy of gemcitabine when used in combination, possibly through the activation of ASK1/JNK.

摘要

蟾酥灵是中药蟾酥的一种活性成分,据报道对多种癌细胞的生长具有抑制作用。在本研究中,我们调查了吉西他滨联合蟾酥灵是否能增强对胰腺癌的抗肿瘤疗效。三种胰腺癌细胞系(Bxpc-3、Mia PaCa-2和Panc-1)在体外接受了吉西他滨和/或蟾酥灵的处理。联合治疗显示出对细胞生长和凋亡的更强抑制作用。与蟾酥灵联合使用时,凋亡信号调节激酶1(ASK1)/JNK的活性在吉西他滨诱导的凋亡中上调。我们还观察到,在荷瘤小鼠模型中,联合治疗显著抑制了肿瘤生长,并且通过免疫组化染色证实了ASK1活性的上调。这些结果表明,蟾酥灵可能是一种潜在的胰腺癌化疗药物,与吉西他滨联合使用时可增强抗肿瘤疗效,可能是通过激活ASK1/JNK来实现的。

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