PMID- 32982425 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220417 IS - 1179-1322 (Print) IS - 1179-1322 (Electronic) IS - 1179-1322 (Linking) VI - 12 DP - 2020 TI - Long Noncoding RNA SNHG7 Accelerates Proliferation, Migration and Invasion of Non-Small Cell Lung Cancer Cells by Suppressing miR-181a-5p Through AKT/mTOR Signaling Pathway. PG - 8303-8312 LID - 10.2147/CMAR.S258487 [doi] AB - PURPOSE: Non-small cell lung cancer (NSCLC) is a typical epithelial lung cancer with high metastasis, incidence and mortality. In recent years, long noncoding RNA small nucleolar RNA host gene 7 (SNHG7) has been identified as significant regulator in different cancer types, including NSCLC. However, the underlying molecular mechanism of SNHG7 during NSCLC tumorigenesis and progression remains largely unclear. METHODS: SNHG7 and miR-181a-5p expression in NSCLC tumors and cells were detected by qRT-PCR. Cell viability, migration, invasion and apoptosis were evaluated by CCK-8, transwell and flow cytometry assay, respectively. A549 and NCI-H1299 xenograft mice model was constructed by subcutaneously injecting cells stably transfected with sh-SNHG7 and sh-NC. The interaction between SNHG7 and miR-181a-5p was validated by luciferase reporter system, RIP and RNA pull down assay. Protein expression of cleaved caspase 3, proliferating cell nuclear antigen (PCNA), AKT, p-AKT, mammalian target of rapamycin (mTOR) and p-mTOR was analyzed by Western blot. RESULTS: SNHG7 expression was up-regulated while miR-181a-5p expression was down-regulated in NSCLC tumors, especially those from patients at Phase III+IV, compared with normal tissues. However, SNHG7 depletion attenuated tumor growth in vitro and in vivo. Moreover, miR-181a-5p inhibitor abolished SNHG7 silencing induced inhibition on proliferation, migration and invasion in NSCLC. Subsequently, we found SNHG7 modulated cell progression by targeting miR-181a-5p and activating AKT/mTOR signaling pathway. CONCLUSION: SNHG7 accelerates proliferation, migration and invasion of NSCLC by suppressing miR-181a-5p through AKT/mTOR signaling pathway, thus presenting desirable biomarkers for NSCLC therapy. CI - (c) 2020 Li et al. FAU - Li, Liping AU - Li L AD - Department of Oncology, Xiantao First People's Hospital, Xiantao, Hubei, People's Republic of China. FAU - Ye, Dan AU - Ye D AD - Department of Oncology, Xiantao First People's Hospital, Xiantao, Hubei, People's Republic of China. FAU - Liu, Liang AU - Liu L AD - Department of Oncology, Xiantao First People's Hospital, Xiantao, Hubei, People's Republic of China. FAU - Li, Xiaoju AU - Li X AD - Department of Oncology, Xiantao First People's Hospital, Xiantao, Hubei, People's Republic of China. FAU - Liu, Jun AU - Liu J AD - Department of Oncology, Xiantao First People's Hospital, Xiantao, Hubei, People's Republic of China. FAU - Su, Shengtian AU - Su S AD - Department of Oncology, Xiantao First People's Hospital, Xiantao, Hubei, People's Republic of China. FAU - Lu, Wenjing AU - Lu W AD - Department of Oncology, Xiantao First People's Hospital, Xiantao, Hubei, People's Republic of China. FAU - Yu, Zhigao AU - Yu Z AD - Department of Oncology, Xiantao First People's Hospital, Xiantao, Hubei, People's Republic of China. LA - eng PT - Journal Article DEP - 20200910 PL - New Zealand TA - Cancer Manag Res JT - Cancer management and research JID - 101512700 PMC - PMC7494385 OTO - NOTNLM OT - AKT/mTOR pathway OT - NSCLC OT - SNHG7 OT - miR-181a-5p OT - progression COIS- The authors declare that they have no conflicts of interest in this work. EDAT- 2020/09/29 06:00 MHDA- 2020/09/29 06:01 PMCR- 2020/09/10 CRDT- 2020/09/28 05:37 PHST- 2020/04/16 00:00 [received] PHST- 2020/08/12 00:00 [accepted] PHST- 2020/09/28 05:37 [entrez] PHST- 2020/09/29 06:00 [pubmed] PHST- 2020/09/29 06:01 [medline] PHST- 2020/09/10 00:00 [pmc-release] AID - 258487 [pii] AID - 10.2147/CMAR.S258487 [doi] PST - epublish SO - Cancer Manag Res. 2020 Sep 10;12:8303-8312. doi: 10.2147/CMAR.S258487. eCollection 2020.