PMID- 34499009 OWN - NLM STAT- MEDLINE DCOM- 20220113 LR - 20231213 IS - 2165-5987 (Electronic) IS - 2165-5979 (Print) IS - 2165-5979 (Linking) VI - 12 IP - 1 DP - 2021 Dec TI - The circular RNA circ0005654 interacts with specificity protein 1 via microRNA-363 sequestration to promote gastric cancer progression. PG - 6305-6317 LID - 10.1080/21655979.2021.1971031 [doi] AB - Circular RNAs (circRNAs), a group of unique long noncoding RNAs, are involved in gastric carcinogenesis through multiple mechanisms, including interacting with microRNAs (miRNAs). Here, circ0005654, significantly upregulated in gastric cancer (GC), was chosen for further examination. circ0005654 was analyzed by RT-qPCR. The function of circ0005654 in GC cells was substantiated by loss-of-function assays. The mechanism of circ0005654 on miR-363/specificity protein 1 (sp1) axis was evaluated in GC cells by bioinformatics analysis, luciferase reporter, FISH, and ChIP assays. We observed that circ0005654 was enhanced in GC tissues and cells. Overexpression of circ0005654 was correlated with a poor long-term prognosis in patients with GC. Functionally, silencing of circ0005654 remarkably suppressed GC cell proliferation, migration and invasiveness in vitro and tumorigenesis and metastases in vivo. It was also established that circ0005654 served as a miR-363 sponge and enhanced sp1 expression. Furthermore, sp1 promoted GC carcinogenesis by regulating myc transcription to potentiate the Wnt/beta-catenin pathway. In conclusion, circ0005654 expedites the GC development via miR-363/sp1/myc/Wnt/beta-catenin axis and is a new biomarker for GC treatment regimen. FAU - Yang, Cui AU - Yang C AD - Department of Clinical Medicine, Wanxi Health Vocational College, Lu'an, Anhui, P.R. China. FAU - Han, Shengjin AU - Han S AD - Department of Emergency Surgery, Lu'an People's Hospital, Lu'an, Anhui, P.R. China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Bioengineered JT - Bioengineered JID - 101581063 RN - 0 (MIRN363 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (RNA, Circular) RN - 0 (Sp1 Transcription Factor) RN - 0 (SP1 protein, human) SB - IM MH - Animals MH - Cell Line, Tumor MH - Disease Progression MH - Female MH - Humans MH - Mice MH - Mice, Nude MH - MicroRNAs/*genetics/metabolism MH - RNA, Circular/*genetics/metabolism MH - Sp1 Transcription Factor/*genetics/metabolism MH - Stomach/pathology MH - *Stomach Neoplasms/genetics/metabolism/mortality/pathology MH - Wnt Signaling Pathway/genetics PMC - PMC8806801 OTO - NOTNLM OT - /beta-catenin pathway OT - Circ0005654 OT - gastric cancer OT - microRNA-363 OT - myc OT - sp1 COIS- The authors declare that there are no competing interests in this study. EDAT- 2021/09/10 06:00 MHDA- 2022/01/14 06:00 PMCR- 2021/09/09 CRDT- 2021/09/09 12:17 PHST- 2021/09/09 12:17 [entrez] PHST- 2021/09/10 06:00 [pubmed] PHST- 2022/01/14 06:00 [medline] PHST- 2021/09/09 00:00 [pmc-release] AID - 1971031 [pii] AID - 10.1080/21655979.2021.1971031 [doi] PST - ppublish SO - Bioengineered. 2021 Dec;12(1):6305-6317. doi: 10.1080/21655979.2021.1971031.