PMID- 37154326 OWN - NLM STAT- MEDLINE DCOM- 20230510 LR - 20231213 IS - 1872-2075 (Electronic) IS - 1000-3061 (Linking) VI - 39 IP - 4 DP - 2023 Apr 25 TI - [Lamin B1 regulates the growth of hepatocellular carcinoma cells by influencing telomerase activity]. PG - 1609-1620 LID - 10.13345/j.cjb.220625 [doi] AB - Lamin B1 (LMNB1) is highly expressed in liver cancer tissues, and its influence and mechanism on the proliferation of hepatocellular carcinoma cells were explored by knocking down the expression of the protein. In liver cancer cells, siRNAs were used to knock down LMNB1. Knockdown effects were detected by Western blotting. Changes in telomerase activity were detected by telomeric repeat amplification protocol assay (TRAP) experiments. Telomere length changes were detected by quantitative real-time polymerase chain reaction (qPCR). CCK8, cloning formation, transwell and wound healing were performed to detect changes in its growth, invasion and migration capabilities. The lentiviral system was used to construct HepG2 cells that steadily knocked down LMNB1. Then the changes of telomere length and telomerase activity were detected, and the cell aging status was detected by SA-beta-gal senescence staining. The effects of tumorigenesis were detected by nude mouse subcutaneous tumorigenesis experiments, subsequent histification staining of tumors, SA-beta-gal senescence staining, fluorescence in situ hybridization (FISH) for telomere analysis and other experiments. Finally, the method of biogenesis analysis was used to find the expression of LMNB1 in clinical liver cancer tissues, and its relationship with clinical stages and patient survival. Knockdown of LMNB1 in HepG2 and Hep3B cells significantly reduced telomerase activity, cell proliferation, migration and invasion abilities. Experiments in cells and tumor formation in nude mice had demonstrated that stable knockdown of LMNB1 reduced telomerase activity, shortened telomere length, senesced cells, reduced cell tumorigenicity and KI-67 expression. Bioinformatics analysis showed that LMNB1 was highly expressed in liver cancer tissues and correlated with tumor stage and patient survival. In conclusion, LMNB1 is overexpressed in liver cancer cells, and it is expected to become an indicator for evaluating the clinical prognosis of liver cancer patients and a target for precise treatment. FAU - Wang, Ruiguan AU - Wang R AD - Faculty of Hepato-Pancreato-Biliary Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, China. AD - Department of Hepatobiliary Surgery, the Eighth Medical Center, Chinese People's Liberation Army General Hospital, Beijing 100091, China. FAU - Chen, Si AU - Chen S AD - Department of Obstetrics and Gynecology, Hunan Prevention and Treatment Institute for Occupational Diseases, Changsha 410021, Hunan, China. FAU - Sun, Zhijia AU - Sun Z AD - Radiotherapy Department, People's Liberation Army Air Force Characteristic Medical Center, Beijing 100142, China. FAU - Wang, Shikun AU - Wang S AD - Physician of Information and Communication Brigade of Xinjiang Military Prefecture, Ngari Prefecture 859499, Tibet, China. FAU - Wang, Jie AU - Wang J AD - School of Medicine, Shihezi University, Shihezi 832000, Xinjiang, China. FAU - Qin, Lingmei AU - Qin L AD - Institute of Biotechnology, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100089, China. FAU - Li, Jiangbo AU - Li J AD - Institute of Biotechnology, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100089, China. LA - chi PT - English Abstract PT - Journal Article PL - China TA - Sheng Wu Gong Cheng Xue Bao JT - Sheng wu gong cheng xue bao = Chinese journal of biotechnology JID - 9426463 RN - EC 2.7.7.49 (Telomerase) SB - IM MH - Animals MH - Mice MH - *Telomerase/genetics/metabolism MH - *Carcinoma, Hepatocellular/genetics MH - *Liver Neoplasms/genetics MH - Telomere Shortening MH - In Situ Hybridization, Fluorescence MH - Mice, Nude MH - Telomere/metabolism/pathology MH - Carcinogenesis MH - Lamin Type B OTO - NOTNLM OT - cell senescence OT - hepatocellular carcinoma OT - nuclear lamina protein B1 (LMNB1) OT - telomerase OT - telomere EDAT- 2023/05/08 13:41 MHDA- 2023/05/10 06:42 CRDT- 2023/05/08 07:13 PHST- 2023/05/10 06:42 [medline] PHST- 2023/05/08 13:41 [pubmed] PHST- 2023/05/08 07:13 [entrez] AID - 10.13345/j.cjb.220625 [doi] PST - ppublish SO - Sheng Wu Gong Cheng Xue Bao. 2023 Apr 25;39(4):1609-1620. doi: 10.13345/j.cjb.220625.