HYD-PEP06 suppresses hepatocellular carcinoma metastasis, epithelial–mesenchymal transition and cancer stem cell-like properties by inhibiting PI3K/AKT and WNT/β-catenin signaling activation

• DOI: 10.1016/j.apsb.2021.03.040
• Publication Date: 2021-04-02T16:08:44Z
• Authors: Wei Tian; Jiatong Li; Zhuo Wang; Tong Zhang; Ying Han; Yanyan Liu; Wenfeng Chu; Yu Liu; Baofeng Yang
• Keywords: 0301 basic medicine; PI3K/AKT; 03 medical and health sciences; Hepatocellular carcinoma; Cancer stem-like cell; Original Article; WNT/β-catenin; Therapeutics. Pharmacology; RM1-950; HYD-PEP06; 3. Good health

HYD-PEP06, an endostatin-modified polypeptide, has been shown to produce effective anti-colorectal carcinoma effects through inhibiting epithelial-mesenchymal transition (EMT). However, whether HYD-PEP06 has similar suppressive effect on hepatocellular carcinoma (HCC) remained unknown. In this study, HYD-PEP06 inhibited metastasis and EMT but not proliferation in vitro. Cignal finder pathway reporter array and Western blot analysis revealed that HYD-PEP06 suppressed HCCLM3 cell metastasis and EMT by inhibiting the PI3K/AKT pathway. Moreover, HYD-PEP06 exerted anti-metastasis effects in HepG2 cancer stem-like cells (CSCs) via suppressing the WNT/β-catenin signaling pathway. Finally, in HCCLM3 tumor-bearing BALB/c nu/nu nude mice, HYD-PEP06 substantially suppressed tumor growth, lung metastasis and HCC progress. Our results suggest that HYD-PEP06 inhibits the metastasis and EMT of HCC and CSCs as well, and thus has the potential as an agent for HCC treatment.