PMID- 35196780 OWN - NLM STAT- MEDLINE DCOM- 20220225 LR - 20220531 IS - 0376-2491 (Print) IS - 0376-2491 (Linking) VI - 102 IP - 8 DP - 2022 Mar 1 TI - [The role and mechanism of lncRNA C9ORF139 targeting miR-24-3P/TAOK1 in regulating the proliferation of acute myeloid leukemia cells]. PG - 576-583 LID - 10.3760/cma.j.cn112137-20210703-01501 [doi] AB - Objective: To investigate the role and mechanism of long non-coding RNA (lncRNA) C9ORF139 targeting micro RNA(miR)-24-3P/TAOK1 in regulating the proliferation of acute myeloid leukemia (AML) cells. Methods: AML cells HL-60 and THP-1 were purchased from the Chinese Academy of Sciences and divided into 4 groups:group A was negative control group (siNC group), group B was interference C9ORF139 group (siC9ORF139 group), group C was siC9ORF139+miR-24-3p inhibitor group, and group D was miR-24-3P+TAOK1 overexpression group (oe-TAOK1 group). Real-time fluorescence quantitative reverse transcription PCR was used to detect the expression levels of AML cell lines of HL-60 and THP-1 in four groups. Cell Counting Kit-8 assay was performed to measure cell proliferation. Flow cytometry was applied to analyze cell apoptosis. Transwell test was applied to detect cell migration and invasion ability. Western blot was used to detect p-serine/threonine kinase (p-raf) and p-mitogen activation proteinkinase (p-MEK), p-extracellular regulatory protein kinase (p-ERK) expression. The luciferase reporter gene plasmid was constructed to verify the binding ability of C9ORF139,miR-24-3P and TAOK1.Nude mice were inoculated with subcutaneous tumor cells of HL-60 (group A) and HL-60 (group B). Results: After the C9ORF139 gene was knocked down and cultured for 120 h, The cell proliferation ability (0.62+/-0.02, 0.82+/-0.02), migration ability (0.22+/-0.03, 0.05+/-0.01), invasion ability (0.20+/-0.02, 0.13+/-0.03) of group B were all lower than that of group A (1.30+/-0.02, 1.83+/-0.07; 0.99+/-0.02, 0.99+/-0.02; 1.00+/-0.01, 1.00+/-0.01) (all P<0.05). When co-transfected with miR-24-3 inhibitor, cell proliferation ability, migration ability and invasion ability were all higher in group B (all P<0.05). When co-transfected with miR-24-3P and oe-TAOK1 plasmid, cell proliferation ability, migration ability and invasion ability were all higher than group B (all P<0.05).When the C9ORF139 gene in the cells was knocked down, the apoptosis level of group B (28.56+/-8.07, 17.74+/-1.91) were higher than those of group A (0.31+/-0.27, 2.49+/-0.33)(all P<0.05); when co-transfected with miR-24-3P inhibitor, the apoptosis level (2.34+/-0.09, 3.06+/-0.06) were lower than those in group B (all P<0.05); when co-transfected with miR-24-3P and oe-TAOK1 in the plasmid group, the apoptosis level (2.16+/-1.29, 4.80+/-0.37) were also lower than those of group B (all P<0.05). In HL-60 and THP-1 cells, when C9ORF139 was not mutated, the luciferase activity of miR-24-3P group was lower than that of the miR-NC group (P<0.05). When the binding site with miR-24-3p in C9ORF139 sequence was mutated, the luciferase activity in miR-24-3p group was equivalent to that in miR-NC group (P>0.05).When TAOK1 was not mutated; the luciferase activity of miR-24-3P group was lower than that of group A (P<0.05). When the binding site with miR-24-3p in TAOK1 sequence was mutated, the luciferase activity in miR-24-3p group was equivalent to that in miR-NC group (P>0.05).When the C9ORF139 gene in HL-60 cells was knocked down and cultured for 72 h, the phosphorylation expression levels of Raf, MEK and ERK molecules in group B were significantly lower than those in group A (all P<0.05). By day 14, the tumor volume in the group A was greater than the tumor cell volume in the group B [(284.49+/-57.61) vs (125.70+/-18.64) mm(3), P=0.017]. The tumor weight of HL-60 in group A was heavier than that of group B [(847.80+/-159.36) vs (408.40+/-113.16) mg, P=0.001]. Conclusions: LncRNA C9ORF139 regulates TAOK1 by sponging miR-24-3P to promote the proliferation, invasion and migration of acute myeloid leukemiacell.In vivo experiments have confirmed that the expression of C9ORF139 can promote the growth of subcutaneous tumors in AML nude mice. FAU - Qin, W AU - Qin W AD - Department of Hematology, the Affiliated Changzhou 2nd People's Hospital of Nanjing Medical University, Changzhou 213000, China. FAU - Cai, X H AU - Cai XH AD - Department of Hematology, the Affiliated Changzhou 2nd People's Hospital of Nanjing Medical University, Changzhou 213000, China. FAU - Han, W M AU - Han WM AD - Department of Hematology, the Affiliated Changzhou 2nd People's Hospital of Nanjing Medical University, Changzhou 213000, China. FAU - Lu, X Z AU - Lu XZ AD - Department of Hematology, the Affiliated Changzhou 2nd People's Hospital of Nanjing Medical University, Changzhou 213000, China. FAU - Chen, M Y AU - Chen MY AD - Department of Hematology, the Affiliated Changzhou 2nd People's Hospital of Nanjing Medical University, Changzhou 213000, China. FAU - Jia, Z X AU - Jia ZX AD - Department of Hematology, the Affiliated Changzhou 2nd People's Hospital of Nanjing Medical University, Changzhou 213000, China. FAU - Liu, J AU - Liu J AD - Department of Hematology, the Affiliated Changzhou 2nd People's Hospital of Nanjing Medical University, Changzhou 213000, China. FAU - Xiao, R AU - Xiao R AD - Department of Hematology, the Affiliated Changzhou 2nd People's Hospital of Nanjing Medical University, Changzhou 213000, China. FAU - Qian, S X AU - Qian SX AD - Department of Hematology, Jiangsu Provincial People's Hospital, Nanjing 210029, China. LA - chi GR - 81870119, 82170153, 81500103/National Natural Science Foundation of China/ GR - CJ20210068/Changzhou Science and Technology Plan/ GR - NMUB201/Nanjing Medical University Science and Technology Development Fund Project/ GR - QN202035/Changzhou Health Committee Science and Technology Project/ GR - 2019K002/Youth Fund of Changzhou Second People's Hospital/ PT - Journal Article PL - China TA - Zhonghua Yi Xue Za Zhi JT - Zhonghua yi xue za zhi JID - 7511141 RN - 0 (MicroRNAs) RN - 0 (RNA, Long Noncoding) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) SB - IM MH - Animals MH - Apoptosis MH - Cell Line, Tumor MH - Cell Movement MH - Cell Proliferation MH - *Leukemia, Myeloid, Acute/genetics MH - Mice MH - Mice, Nude MH - *MicroRNAs/genetics/metabolism MH - *Protein Serine-Threonine Kinases MH - *RNA, Long Noncoding/genetics/metabolism EDAT- 2022/02/24 06:00 MHDA- 2022/02/26 06:00 CRDT- 2022/02/23 20:22 PHST- 2022/02/23 20:22 [entrez] PHST- 2022/02/24 06:00 [pubmed] PHST- 2022/02/26 06:00 [medline] AID - 10.3760/cma.j.cn112137-20210703-01501 [doi] PST - ppublish SO - Zhonghua Yi Xue Za Zhi. 2022 Mar 1;102(8):576-583. doi: 10.3760/cma.j.cn112137-20210703-01501.