PMID- 33342156 OWN - NLM STAT- MEDLINE DCOM- 20210119 LR - 20210119 IS - 0253-3766 (Print) IS - 0253-3766 (Linking) VI - 42 IP - 12 DP - 2020 Dec 23 TI - [Mechanism of lncRNA-SRLR induced invasion and metastasis in U2OS osteosarcoma cells]. PG - 1007-1013 LID - 10.3760/cma.j.cn112152-20190404-00216 [doi] AB - Objective: To explore the potential mechanism of sorafenib resistance associated long non-coding RNA (lncRNA-SRLR) promoted invasion and metastasis in U2OS osteosarcoma cells. Methods: We transfected U2OS cells with negative control lentivirus (LV-NC) or lncRNA-SRLR overexpressed lentivirus (LV-over/SRLR) particles. LV-NC and LV-over/SRLR stable transfected cells (U20S/NC and U20S/SRLR) were selected by primary cell culture medium containing puromycin. The mRNA expressions of lncRNA-SRLR and procollagen-lysine, procollagen-lysine 2-oxoglutarate 5-dioxygenase 2 (PLOD2) were detected by quantitative real-time polymerase chain reaction (qRT-PCR). The effect of lncRNA-SRLR on the invasion of U2OS cells were determined by wound-healing assay and Transwell migration assay. The effect of SRLR on the interleukin-6 (IL-6) secretion of U2OS cells was evaluated by enzyme-linked immunosorbent assay (ELISA) analysis. The subcellular distribution of SRLR in U2OS cells was detected by fluorescence in situ hybridization (FISH) analysis.The expression of PLOD2 in cells was detected by immunofluorescence (IF). The expressions of PLOD2 and focal adhesion kinase (FAK)/signal transducer and activator of transcription 3 (STAT3) signal pathway related proteins in U2OS/NC and U2OS/SRLR cells were detected by western blotting. Results: qRT-PCR assay showed that mRNA expressions of lncRNA-SRLR and PLOD2 in U2OS/SRLR cells were (3 964.97+/-0.05) and (2.77+/-0.11), respectively, significantly higher than those in U2OS/NC cells (P<0.001 or P<0.01). The results of wound-healing and Transwell migration assay showed that over-expression of SRLR markedly promoted the invasion ability of U2OS cells (P<0.05). The result of ELISA analysis showed that the IL-6 secretions in U2OS/NC or U2OS/SRLR cells were (125.38+/-11.22) pg/ml or (119.97+/-13.43) pg/ml, without statistical significance (P>0.05). The subcellular distribution assay revealed that lncRNA-SRLR is predominately located in the nucleus. The result of IF showed that compared with U2OS/NC cells, the expression of PLOD2 was up-regulated in U2OS/SRLR cells. The result of western blotting showed that over-expression of SRLR significantly increased the expression levels of PLOD2, phosphorylation (p)-FAK and p-STAT3 in U2OS cells (P<0.01). Conclusion: lncRNA-SRLR promotes invasion and metastasis of osteosarcoma by activating PLOD2-FAK/STAT3 signal axis. FAU - Cao, F AU - Cao F AD - Department of Orthopaedics, Pingdingshan First People's Hospital, Pingdingshan 467000, China. FAU - Kang, X H AU - Kang XH AD - Department of Oncology, the First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China. FAU - Wang, D F AU - Wang DF AD - Department of Orthopaedics, Pingdingshan First People's Hospital, Pingdingshan 467000, China. FAU - Ma, L AU - Ma L AD - Department of Orthopaedics, Pingdingshan First People's Hospital, Pingdingshan 467000, China. FAU - Cao, X J AU - Cao XJ AD - Department of Orthopaedics, Pingdingshan First People's Hospital, Pingdingshan 467000, China. FAU - Wang, Y AU - Wang Y AD - Department of Oncology, the First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China. FAU - Gao, Y Y AU - Gao YY AD - Department of Oncology, the First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China. FAU - Miao, Z H AU - Miao ZH AD - Department of Oncology, the First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China. FAU - Deng, H B AU - Deng HB AD - Department of Oncology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China. FAU - Gong, Y B AU - Gong YB AD - Department of Oncology, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China. LA - chi GR - 81503414, 81874392, 82074268/National Natural Science Foundation of China/ GR - 2017-01-07-00-10-E00064/Project of Scientific Research and Innovation of Shanghai Education Commission/ PT - Journal Article PL - China TA - Zhonghua Zhong Liu Za Zhi JT - Zhonghua zhong liu za zhi [Chinese journal of oncology] JID - 7910681 RN - 0 (RNA, Long Noncoding) RN - 9ZOQ3TZI87 (Sorafenib) SB - IM MH - *Bone Neoplasms/genetics/metabolism MH - Drug Resistance, Neoplasm/genetics MH - Humans MH - Neoplasm Invasiveness/genetics MH - Neoplasm Metastasis/genetics MH - *Osteosarcoma/genetics/metabolism MH - *RNA, Long Noncoding/metabolism MH - Sorafenib/pharmacology OTO - NOTNLM OT - Focal adhesion kinase signal pathway OT - Osteosarcoma OT - Procollagen-lysine 2-oxoglutarate 5-dioxygenase 2 OT - Sorafenib resistance associated long non-coding RNA EDAT- 2020/12/21 06:00 MHDA- 2021/01/20 06:00 CRDT- 2020/12/20 21:56 PHST- 2020/12/20 21:56 [entrez] PHST- 2020/12/21 06:00 [pubmed] PHST- 2021/01/20 06:00 [medline] AID - 10.3760/cma.j.cn112152-20190404-00216 [doi] PST - ppublish SO - Zhonghua Zhong Liu Za Zhi. 2020 Dec 23;42(12):1007-1013. doi: 10.3760/cma.j.cn112152-20190404-00216.