PMID- 35170199 OWN - NLM STAT- MEDLINE DCOM- 20220412 LR - 20220531 IS - 1582-4934 (Electronic) IS - 1582-1838 (Print) IS - 1582-1838 (Linking) VI - 26 IP - 8 DP - 2022 Apr TI - Hsa_circ_0003945 promotes progression of hepatocellular carcinoma by mediating miR-34c-5p/LGR4/beta-catenin axis activity. PG - 2218-2229 LID - 10.1111/jcmm.17243 [doi] AB - Accumulating evidence suggests that circular RNAs (circRNAs) play essential roles in regulating cancer progression, but many circRNAs in hepatocellular carcinoma (HCC) remain unknown. Dysregulated circRNAs in HCC were identified through bioinformatics analysis of Gene Expression Omnibus data sets. Quantitative real-time PCR (qRT-PCR), Sanger sequencing, RNase R digestion and actinomycin D treatment were conducted to confirm the characterization of circRNAs. CCK-8, wound-healing and Transwell assays were performed to assess the functional roles of Hsa_circ_0003945 (Circ_0003945) in HCC cell lines. Subcellular fractionation and fluorescence in situ hybridization (FISH) were performed to locate Circ_0003945 in HCC cells. Dual-luciferase reporter assay was executed to verify the binding of Circ_0003945 to microRNAs (miRNAs) or the miRNAs to their target genes. In this study, we found that Circ_0003945 was upregulated in HCC tissue, and higher Circ_0003945 expression was positively correlated with tumour size and tumour stage. Furthermore, high plasma levels of circulating Circ_0003945 were confirmed in HCC patients compared with those in non-HCC groups. The functional experiments revealed that overexpression or knockdown of Circ_0003945 promoted or attenuated tumour growth and migration, respectively. Mechanistically, Circ_0003945 might exert as a miR-34c-5p sponge to upregulate the expression of leucine-rich repeat-containing G protein-coupled receptor 4 (LGR4), activating the beta-catenin pathway, and finally facilitating HCC progression. Additionally, a beta-catenin activator could reverse the effect of Circ_0003945 knockdown. In conclusion, Circ_0003945 exerts a tumour-promoting role in HCC cells by regulating the miR-34c-5p/LGR4/beta-catenin axis, which may be a potential target for HCC therapy. CI - (c) 2022 The Authors. Journal of Cellular and Molecular Medicine published by Foundation for Cellular and Molecular Medicine and John Wiley & Sons Ltd. FAU - Lyu, Li-Hua AU - Lyu LH AD - Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, Shanghai, China. FAU - Zhang, Chun-Yan AU - Zhang CY AD - Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, Shanghai, China. AD - Department of Laboratory Medicine, Xiamen Branch, Zhongshan Hospital, Fudan University, Xiamen, China. FAU - Yang, Wen-Jing AU - Yang WJ AD - Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, Shanghai, China. FAU - Jin, An-Li AU - Jin AL AD - Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, Shanghai, China. FAU - Zhu, Jie AU - Zhu J AD - Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, Shanghai, China. FAU - Wang, Hao AU - Wang H AD - Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, Shanghai, China. FAU - Liu, Te AU - Liu T AUID- ORCID: 0000-0003-3976-3489 AD - Shanghai Geriatric Institute of Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China. FAU - Wang, Bei-Li AU - Wang BL AD - Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, Shanghai, China. AD - Cancer center, Zhong Shan Hospital, Fudan University, Shanghai, China. FAU - Cheng, Jian-Wen AU - Cheng JW AD - Department of Liver Surgery & Transplantation, Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, China. AD - Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, China. FAU - Yang, Xin-Rong AU - Yang XR AD - Department of Liver Surgery & Transplantation, Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, China. AD - Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Shanghai, China. FAU - Guo, Wei AU - Guo W AUID- ORCID: 0000-0003-4406-1094 AD - Department of Laboratory Medicine, Zhongshan Hospital, Fudan University, Shanghai, China. AD - Department of Laboratory Medicine, Xiamen Branch, Zhongshan Hospital, Fudan University, Xiamen, China. AD - Cancer center, Zhong Shan Hospital, Fudan University, Shanghai, China. AD - Department of Laboratory Medicine, Wusong Branch, Zhongshan Hospital, Fudan University, Shanghai, China. LA - eng GR - 2018ZSLC05/Shanghai Municipal Key Clinical Specialty, and specialized fund for the clinical researches of Zhongshan Hospital affiliated Fudan University/ GR - 81772551/National Natural Science Foundation of China/ GR - 81972000/National Natural Science Foundation of China/ GR - 81902139/National Natural Science Foundation of China/ GR - 81772578/National Natural Science Foundation of China/ GR - 81872355/National Natural Science Foundation of China/ GR - 82072715/National Natural Science Foundation of China/ GR - 19441905000/Shanghai "Rising Stars of Medical Talent" Youth Development Program (Outstanding Youth Medical Talents), the Projects from the Shanghai Science and Technology Commission/ GR - YDZX20193502000002/key medical and health projects of Xiamen/ GR - 2019YFC1315800/National Key R&D Program of China/ GR - 2019YFC1315802/National Key R&D Program of China/ GR - 81830102/State Key Program of National Natural Science of China/ GR - 2019CXJQ02/Shanghai Municipal Health Commission Collaborative Innovation Cluster Project/ PT - Journal Article DEP - 20220216 PL - England TA - J Cell Mol Med JT - Journal of cellular and molecular medicine JID - 101083777 RN - 0 (CTNNB1 protein, human) RN - 0 (LGR4 protein, human) RN - 0 (MIRN34 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (RNA, Circular) RN - 0 (Receptors, G-Protein-Coupled) RN - 0 (beta Catenin) SB - IM MH - *Carcinoma, Hepatocellular/pathology MH - Cell Line, Tumor MH - Cell Proliferation/genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - *Liver Neoplasms/pathology MH - *MicroRNAs/genetics/metabolism MH - RNA, Circular/genetics MH - *Receptors, G-Protein-Coupled/metabolism MH - Signal Transduction MH - *beta Catenin/genetics/metabolism PMC - PMC8995453 OTO - NOTNLM OT - Circ_0003945 OT - hepatocellular carcinoma OT - leucine-rich repeat-containing G protein-coupled receptor 4 OT - miR-34c-5p OT - tumour progression COIS- The authors declare no competing interests. EDAT- 2022/02/17 06:00 MHDA- 2022/04/13 06:00 PMCR- 2022/04/01 CRDT- 2022/02/16 05:53 PHST- 2022/01/24 00:00 [revised] PHST- 2021/09/22 00:00 [received] PHST- 2022/01/31 00:00 [accepted] PHST- 2022/02/17 06:00 [pubmed] PHST- 2022/04/13 06:00 [medline] PHST- 2022/02/16 05:53 [entrez] PHST- 2022/04/01 00:00 [pmc-release] AID - JCMM17243 [pii] AID - 10.1111/jcmm.17243 [doi] PST - ppublish SO - J Cell Mol Med. 2022 Apr;26(8):2218-2229. doi: 10.1111/jcmm.17243. Epub 2022 Feb 16.