PMID- 37424803 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230718 IS - 2156-6976 (Print) IS - 2156-6976 (Electronic) IS - 2156-6976 (Linking) VI - 13 IP - 6 DP - 2023 TI - The splicing factor proline and glutamine rich promotes the growth of osteosarcoma via the c-Myc signaling pathway. PG - 2488-2503 AB - Splicing factor proline- and glutamine-rich (SFPQ) regulates transcripts in skeletal muscle metabolism and tumorigenesis. As osteosarcoma (OS) is the most common malignant bone tumor characterized by genome instability, such as MYC amplification, this study aimed to investigate the role and mechanism of SFPQ in OS. Expression of SFPQ in OS cell lines and human OS tissues was detected using quantitative real-time PCR, western blot, and fluorescence in situ hybridization (FISH) analyses. The oncogenic role of SFPQ in OS cells and murine xenograft models and the underlying mechanism of SFPQ on the c-Myc signaling pathway were assessed in vitro and in vivo. Results showed that SFPQ expression was upregulated and correlated with poor prognosis in OS patients. SFPQ overexpression promoted the malignant biological behavior of OS cells, while its knockdown markedly reduced the oncogenic function of OS. Additionally, depletion of SFPQ inhibited OS growth and bone destruction in nude mice. SFPQ overexpression induced malignant biological behaviors, which could be rescued by the depletion of c-Myc. These results suggest an oncogenic role of SFPQ in OS, possibly through the c-Myc signaling pathway. CI - AJCR Copyright (c) 2023. FAU - Mao, Lianghao AU - Mao L AD - Affiliated Hospital of Jiangsu University Zhenjiang 212001, Jiangsu, China. AD - Faculty of Medicine, Heidelberg University Heidelberg 69120, Germany. FAU - Jiang, Pan AU - Jiang P AD - Affiliated Hospital of Jiangsu University Zhenjiang 212001, Jiangsu, China. AD - Guizhou Orthopedics Hospital Guiyang 550002, Guizhou, China. FAU - Lei, Xuan AU - Lei X AD - Affiliated Hospital of Jiangsu University Zhenjiang 212001, Jiangsu, China. FAU - Zhang, Bing AU - Zhang B AD - Affiliated Hospital of Jiangsu University Zhenjiang 212001, Jiangsu, China. FAU - Zhong, Xinyu AU - Zhong X AD - Affiliated Hospital of Jiangsu University Zhenjiang 212001, Jiangsu, China. FAU - Yin, Zhengyu AU - Yin Z AD - Affiliated Hospital of Jiangsu University Zhenjiang 212001, Jiangsu, China. FAU - Wang, Yongjie AU - Wang Y AD - Department of Orthopedic Surgery, Shanghai Tenth People's Hospital Affiliated to Tongji University Shanghai 200072, China. FAU - Li, Dapeng AU - Li D AD - Affiliated Hospital of Jiangsu University Zhenjiang 212001, Jiangsu, China. FAU - Zhang, Yiming AU - Zhang Y AD - Affiliated Hospital of Jiangsu University Zhenjiang 212001, Jiangsu, China. FAU - Zheng, Qiping AU - Zheng Q AD - Department of Laboratory Science, School of Medicine, Jiangsu University Zhenjiang 212013, Jiangsu, China. AD - Shenzhen Walgenron Bio-Pharm Co., Ltd. Shenzhen 518118, Guangdong, China. LA - eng PT - Journal Article DEP - 20230615 PL - United States TA - Am J Cancer Res JT - American journal of cancer research JID - 101549944 PMC - PMC10326564 OTO - NOTNLM OT - Splicing factor proline- and glutamine-rich (SFPQ) OT - c-Myc signaling OT - osteosarcoma OT - progression COIS- None. EDAT- 2023/07/10 06:42 MHDA- 2023/07/10 06:43 PMCR- 2023/06/15 CRDT- 2023/07/10 04:48 PHST- 2023/03/16 00:00 [received] PHST- 2023/05/22 00:00 [accepted] PHST- 2023/07/10 06:43 [medline] PHST- 2023/07/10 06:42 [pubmed] PHST- 2023/07/10 04:48 [entrez] PHST- 2023/06/15 00:00 [pmc-release] PST - epublish SO - Am J Cancer Res. 2023 Jun 15;13(6):2488-2503. eCollection 2023.