期刊
JOURNAL OF CANCER
卷 9, 期 18, 页码 3247-3256出版社
IVYSPRING INT PUBL
DOI: 10.7150/jca.25921
关键词
Scutellarin; NSCLC; apoptosis; autophagy; ERK1/2; AKT
类别
资金
- National Natural Science Foundation of China [81403142]
- Special Fund of Guangdong Provincial Hospital of Chinese Medicine for Scientific and Technological Research of Traditional Chinese Medicine [YK2013B2N09]
- Terry Fox Foundation Cancer Research Funding [YN2014TF04]
- Science and Technology Planning Project of Guangdong Province [2016A020226048, 2014A020212264, 2014A020 221080, 2013B021800248]
Curative molecular therapy for non-small cell lung cancer (NSCLC) is still lacking. Scutellarin, an active flavone extracted from Erigeron breviscapus Hand-Mazz, displays anti-tumor property in diverse cancer types, yet its tumor-suppressive effect on NSCLC is not reported. In this study, we found that scutellarin significantly inhibited the proliferation of NSCLC cells, induced cell apoptosis, and triggered autophagy. Notably, inhibition of autophagy with inhibitor HCQ attenuated the anti-proliferative activity of scutellarin, indicating that scutellarin-induced autophagy is antineoplastic. In addition, HCQ treatment reduced scutellarin-induced apoptosis. Further study demonstrated that scutellarin stimulated phosphorylation of ERK1/2, and inhibition of ERK1/2 with inhibitor U0126 markedly attenuated scutellarin-induced autophagy. Similarly, scutellarin downregulated the expression of p-AKT, and AKT inhibitor MK-2206 induced autophagy. Moreover, there also existed crosstalk between ERK and AKT pathways. Finally, in vivo xenograft nude mice experiment proved that scutellarin treatment significantly reduced tumor growth and increased the levels of LC3-II and p-ERK1/2, suppressed p-AKT in mice tumors. Thus, our study for the first time uncovered the anti-cancer function of scutellarin on NSCLC cells, and might provide a potential novel therapy for treatment of patients with NSCLC.
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