Int J Biol Sci 2021; 17(13):3595-3607. doi:10.7150/ijbs.62471 This issue

Research Paper

Rutin attenuates Sorafenib-induced Chemoresistance and Autophagy in Hepatocellular Carcinoma by regulating BANCR/miRNA-590-5P/OLR1 Axis

Meng Zhou1#, Gan Zhang1#, Jun Hu1, Yanzhi Zhu1, Haoming Lan1, Xianfeng Shen1, Yi Lv2, Linsheng Huang1✉

1. Department of Hepatopancreatobiliary Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, P. R. China.
2. Department of Hepatobiliary Surgery, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710000, P. R. China.
#These authors contributed equally to this work.

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Citation:
Zhou M, Zhang G, Hu J, Zhu Y, Lan H, Shen X, Lv Y, Huang L. Rutin attenuates Sorafenib-induced Chemoresistance and Autophagy in Hepatocellular Carcinoma by regulating BANCR/miRNA-590-5P/OLR1 Axis. Int J Biol Sci 2021; 17(13):3595-3607. doi:10.7150/ijbs.62471. Available from https://www.ijbs.com/v17p3595.htm

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Abstract

Graphic abstract

Rutin, the main component of Potentilla discolor Bunge, was proven to exhibit anti-tumor properties. Sorafenib (SO) is conventionally used in chemotherapy against hepatocellular carcinoma (HCC), but acquired resistance developed during long-term therapy limits its benefits. This study aimed to explore the molecular mechanism of rutin in SO-induced autophagy and chemoresistance in HCC. Sixty-eight paired HCC patients who received the same chemotherapy treatment were obtained. We also established two SO resistance cell lines and then utilized high-throughput RNA sequencing to explore their long non-coding RNA (lncRNA) expression profiles. The target microRNA (miRNA) and downstream mRNA were also explored. Our results indicated that rutin treatment attenuates autophagy and BANCR expression in SO resistance cells. Transmission electron microscopy clearly showed a significantly decreased number of autophagosomes after rutin-treated HepG2/SO and HCCLM3/SO cells. BANCR knockdown promotes the sensitivity of SO resistance cells to SO. Further study found that BANCR acts as a molecular sponge of miR-590-5P to sequester miR-590-5P away from oxidized low-density lipoprotein receptor 1 (OLR1) in HCC cells. Furthermore, in vivo study demonstrated that rutin could inhibit autophagy through the BANCR/miRNA-590-5P/OLR1 axis. Our findings suggest that rutin could regulate autophagy by regulating BANCR/miRNA-590-5P/OLR1 axis.

Keywords: Rutin, Hepatocellular carcinoma, Drug resistance, Autophagy, Non-coding RNA