实用医学杂志2024，Vol.40Issue(24)：3427-3437,11.DOI:10.3969/j.issn.1006-5725.2024.24.001
肌醇-三磷酸3-激酶B通过抑制线粒体自噬导致衰老睾丸间质细胞睾酮合成障碍
Inositol-trisphosphate 3-kinase B causes impaired testosterone synthesis in senescent leydig cells by inhibiting mitophagy
摘要
Abstract
Objective To explore the effect and mechanism of ITPKB on testosterone synthesis disorder of senescent Leydig cells.Methods A comprehensive analysis of public datasets was performed using GO,GSEA enrichment analysis and protein interaction network to determine the expression of related pathways and genes in testicular tissue in aging-related diseases.D-galactose intraperitoneal injection to construct an aging mouse model;Mouse Leydig cells(TM3)were cultured,and the cells were divided into four groups,control group(NC group),senescence group(D-gal group),inhibitor group(GNF362 group)and D-gal+GNF362 group.The serum levels of testosterone,follicle-stimulating hormone and luteinizing hormone in mice were detected by ELISA.q-PCR was used to detect the mRNA levels of IL-1α,IL-6,TNF-α and ITPKB.Immunofluorescence was used to detect the protein expressions of StAR,3β-HSD,ITPKB and LC3.Western blot was used to detect the protein expressions of P53,P21,StAR and ITPKB.Transmission electron microscopy to observe intracellular structures.Results Bioin-formatics analysis showed that ITPKB was highly expressed in the testes of aging mice.The serum testosterone level of aging mice was lower than that of young mice.Compared with the younger group,the mRNA levels of IL-1α,IL-6,TNF-α and ITPKB in the testes of mice in the aging group were increased,and the protein levels of P53,P21 and ITPKB were increased.The levels of StAR,3β-HSD,LC3 protein and mitophagy decreased.Compared with the cells in the D-gal group,the testosterone level in the supernatant of the D-gal+GNF362 group was increased,and the level of mitophagy was significantly increased.Conclusion ITPKB causes impaired testosterone synthesis in senescent Leydig cells by inhibiting mitophagy.关键词
迟发性性腺功能减退症/睾酮缺乏/肌醇-三磷酸3-激酶B/衰老/睾酮替代疗法/线粒体自噬Key words
late-onset hypogonadism/testosterone deficiency/inositol-trisphosphate 3-kinase B/aging/testosterone replacement therapy/mitophagy分类
医药卫生引用本文复制引用
李梓光,韦存,赵磊,周其赵..肌醇-三磷酸3-激酶B通过抑制线粒体自噬导致衰老睾丸间质细胞睾酮合成障碍[J].实用医学杂志,2024,40(24):3427-3437,11.基金项目
国家自然科学基金青年科学基金资助项目(编号:81901530) （编号:81901530）
