Wang Xuanbin, Wang Ning, Li Hongliang, Liu Ming, Cao Fengjun, Yu Xianjun, Zhang Jingxuan, Tan Yan, Xiang Longchao, Feng Yibin
Laboratory of Chinese Herbal Pharmacology, Oncology Center, Renmin Hospital, Hubei University of Medicine, 39 Chaoyang Mid-Road, Shiyan 442000, China.
Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, 30 South Renmin Road, Shiyan 442000, China.
Int J Mol Sci. 2016 Apr 16;17(4):577. doi: 10.3390/ijms17040577.
Hepatocellular carcinoma (HCC) is the second leading cause of cancer-related death and its prognosis remains poor due to the high risk of tumor recurrence and metastasis. Berberine (BBR) is a natural compound derived from some medicinal plants, and accumulating evidence has shown its potent anti-tumor activity with diverse action on tumor cells, including inducing cancer cell death and blocking cell cycle and migration. Molecular targets of berberine involved in its inhibitory effect on the invasiveness remains not yet clear. In this study, we identified that berberine exhibits a potent inhibition on the invasion and migration of HCC cells. This was accompanied by a dose-dependent down-regulation of expression of Cyclooxygenase-2 (COX-2), nuclear factor kappa B (NF-κB), urokinase-type plasminogen activator (uPA) and matrix metalloproteinase (MMP)-9 in berberine-treated HCC cells. Furthermore, berberine inactivated p38 and Erk1/2 signaling pathway in HCC cells. Primarily, this may be attributed to the up-regulation of plasminogen activator inhibitor-1 (PAI-1), a tumor suppressor that can antagonize uPA receptor and down-regulation of uPA. Blockade of uPA receptor-associated pathways leads to reduced invasiveness and motility of berberine-treated HCC cells. In conclusion, our findings identified for the first time that inactivation of uPA receptor by up-regulation of PAI-1 and down-regulation of uPA is involved in the inhibitory effect of berberine on HCC cell invasion and migration.
肝细胞癌(HCC)是癌症相关死亡的第二大主要原因,由于肿瘤复发和转移的高风险,其预后仍然很差。黄连素(BBR)是一种从一些药用植物中提取的天然化合物,越来越多的证据表明其具有强大的抗肿瘤活性,对肿瘤细胞有多种作用,包括诱导癌细胞死亡、阻断细胞周期和迁移。黄连素抑制侵袭作用所涉及的分子靶点尚不清楚。在本研究中,我们发现黄连素对肝癌细胞的侵袭和迁移具有强大的抑制作用。这伴随着黄连素处理的肝癌细胞中环氧合酶-2(COX-2)、核因子κB(NF-κB)、尿激酶型纤溶酶原激活剂(uPA)和基质金属蛋白酶(MMP)-9表达的剂量依赖性下调。此外,黄连素使肝癌细胞中的p38和Erk1/2信号通路失活。主要原因可能是纤溶酶原激活剂抑制剂-1(PAI-1)的上调,PAI-1是一种肿瘤抑制因子,可拮抗uPA受体并下调uPA。阻断uPA受体相关通路会导致黄连素处理的肝癌细胞的侵袭性和运动性降低。总之,我们的研究结果首次确定,PAI-1上调和uPA下调导致uPA受体失活参与了黄连素对肝癌细胞侵袭和迁移抑制作用。