Title:Polyphyllin VII as a Potential Drug for Targeting Stemness in Hepatocellular
Cancer via STAT3 Signaling
Volume: 23
Issue: 4
Author(s): Liuhang Xu, Ziqi Chen, Yangbin Wang, Yulin Li, Zhongyu Wang, Fangzhou Li*Xueyan Xi*
Affiliation:
- Hubei Key Laboratory of Wudang Local Chinese Medicine
Research, Shiyan, No. 30 Renmin Nanlu, Shiyan City, Hubei Province 442000, P.R. China
- Department of Immunology, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, No. 30 Renmin
Nanlu, Shiyan City, Hubei Province 442000, P.R. China
- Renmin Hospital, Hubei
University of Medicine, Shiyan, No. 30 Renmin Nanlu, Shiyan City, Hubei Province 442000, P.R. China
- Hubei Key
Laboratory of Embryonic Stem Cell Research, Hubei University of Medicine, Shiyan, No. 30 Renmin Nanlu, Shiyan City,
Hubei Province 442000, P.R. China
Keywords:
PP7, hepatocellular carcinoma, cancer stem cells, STAT3 signaling, CD133, OCT-4.
Abstract:
Background: At present, the treatment of hepatocellular carcinoma (HCC) is disturbed by
the treatment failure and recurrence caused by the residual liver cancer stem cells (CSCs). Therefore,
drugs targeting HCC CSCs should be able to effectively eliminate HCC and prevent its recurrence. In
this study, we demonstrated the effect of Polyphyllin VII (PP7) on HCC CSCs and explored their potential
mechanism.
Methods: HepG2 and Huh7 cells were used to analyze the antitumor activity of PP7 by quantifying
cell growth and metastasis as well as to study the effect on stemness.
Results: Our results demonstrated that PP7 promoted apoptosis and significantly inhibited proliferation
and migration of both HepG2 and Huh7 cells. PP7 also inhibited tumor spheroid formation and induced
significant changes in the expression of stemness markers (CD133 and OCT-4). These effects of
PP7 were mediated by STAT3 signaling.
Conclusion: PP7 can effectively suppress tumor initiation, growth, and metastasis and inhibit stemness
through regulation of STAT3 signaling pathway in liver cancer cells. Our data would add more evidence
to further clarify the therapeutic effect of PP7 against HCC.