PMID- 38462356 OWN - NLM STAT- MEDLINE DCOM- 20240312 LR - 20240312 IS - 0376-2491 (Print) IS - 0376-2491 (Linking) VI - 104 IP - 10 DP - 2024 Mar 12 TI - [LncRNA SNHG11 promotes malignant progression of colorectal cancer cells through the PI3K/Akt/mTOR signaling pathway]. PG - 758-765 LID - 10.3760/cma.j.cn112137-20231103-00998 [doi] AB - Objective: To investigate the effects of lncRNA SNHG11 on proliferation, migration, invasion and apoptosis of colorectal cancer cancer cells and possible mechanisms. Methods: qRT-PCR was performed to detect the expression level of lncRNA SNHG11 in colorectal cancer tissues and its related cell lines. The correlation between SNHG11 expression and clinical prognosis of patients was assessed by bioinformatics techniques. Cultured CRC cell lines were transfected with shCtrl (shCtrl group), shSNHG11#1 (shSNHG11#1 group), shSNHG11#2 (shSNHG11#2 group), Control cDNA (Control cDNA group), and SNHG11 cDNA (SNHG11 cDNA), respectively. Thiazolyl blue (MTT), clone formation assay, Transwell assay, cell scratch assay, and flow cytometry were used to detect the proliferation, migration, invasion, and apoptosis of CRC cells in each group. Western protein blotting was used to detect the expression of relevant proteins in each group, and the effect of lncRNA SNHG11 knockdown on the growth of tumour cells in vivo was analysed by nude mice tumouring assay. Phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) signalling pathway inhibitor LY294002 was used for rescue experiments. Results: The expression of lncRNA SNHG11 was significantly higher in colorectal cancer cells and tissues than in normal tissues (P<0.05). Survival analysis showed that the expression level of SNHG11 was not statistically associated with CRC survival (P>0.05). shSNHG11#2 group compared with shCtrl group. MTT OD490/570 values decreased, the number of CRC cell clones decreased, the number of Transwell cells decreased, the area of cell scratch decreased, and the apoptosis rate increased (P<0.05). The mesenchymal markers matrix metalloproteinase (MMP9), N-cadherin and vimentin were significantly reduced, and the expression of the epithelial marker E-cadherin was upregulated. The expression of anti-apoptotic proteins Bcl-2 and Bcl-xl was decreased, and the expression of pro-apoptotic protein Bax was increased (P<0.05).In vivo experiments showed that lncRNA SNHG11 knockdown inhibited the growth of colorectal cancer cells, and the expression of Ki67 was reduced in tumours (P<0.05). LncRNA SNHG11 knockdown inhibited the expression of p-PI3K, p-Akt and p-mTOR.The PI3K/Akt/mTOR signaling pathway inhibitor LY294002 was able to restore the malignant cytological progression of colorectal cancer cells induced by the overexpression of lncRNA SNHG11. Conclusions: LncRNA SNHG11 is highly expressed in colorectal cancer. lncRNA SNHG11 can promote the malignant progression of colorectal cancer cells by regulating the PI3K/Akt/mTOR signaling pathway, and this finding provides a new theoretical basis for targeted therapy of colorectal cancer. FAU - Tao, S N AU - Tao SN AD - Department of Nuclear Medicine, the First Affiliated Hospital of Wannan Medical College,Wuhu 241000, China. FAU - Liu, X C AU - Liu XC AD - Department of Nuclear Medicine, the First Affiliated Hospital of Wannan Medical College,Wuhu 241000, China. FAU - Wang, Y Y AU - Wang YY AD - Department of Nuclear Medicine, the First Affiliated Hospital of Wannan Medical College,Wuhu 241000, China. FAU - Yang, H AU - Yang H AD - Central Laboratory,Anhui Province Key Laboratory of Non-coding RNA Basic and Clinical Transformation,the First Affiliated Hospital of Wannan Medical College,Wuhu 241000, China. LA - chi GR - RNA202006/The Opening Foundation of Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institution/ GR - 2023AH051746/Key University Science Research Project of Anhui Province/ PT - English Abstract PT - Journal Article PL - China TA - Zhonghua Yi Xue Za Zhi JT - Zhonghua yi xue za zhi JID - 7511141 RN - EC 2.7.1.137 (Phosphatidylinositol 3-Kinase) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.1.- (Phosphatidylinositol 3-Kinases) RN - 0 (RNA, Long Noncoding) RN - 0 (DNA, Complementary) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Animals MH - Mice MH - Humans MH - Phosphatidylinositol 3-Kinase/metabolism/pharmacology MH - Proto-Oncogene Proteins c-akt/metabolism MH - Phosphatidylinositol 3-Kinases/genetics/metabolism/pharmacology MH - *RNA, Long Noncoding/genetics MH - Mice, Nude MH - DNA, Complementary/pharmacology MH - Cell Line, Tumor MH - Cell Proliferation MH - Signal Transduction MH - TOR Serine-Threonine Kinases/genetics/metabolism/pharmacology MH - *Colorectal Neoplasms/genetics MH - Mammals/genetics/metabolism EDAT- 2024/03/11 00:42 MHDA- 2024/03/12 06:42 CRDT- 2024/03/10 22:18 PHST- 2024/03/12 06:42 [medline] PHST- 2024/03/11 00:42 [pubmed] PHST- 2024/03/10 22:18 [entrez] AID - 10.3760/cma.j.cn112137-20231103-00998 [doi] PST - ppublish SO - Zhonghua Yi Xue Za Zhi. 2024 Mar 12;104(10):758-765. doi: 10.3760/cma.j.cn112137-20231103-00998.