SGTB(Small glutamine-rich tetratricopeptide repeat-containing, β)是一种富含谷氨酰胺的小型蛋白质,属于tetratricopeptide repeat(TPR)家族。TPR结构域是蛋白质-蛋白质相互作用中常见的一种结构域,能够介导多种信号转导和蛋白质折叠过程。SGTB在多种生物学过程中发挥着重要作用,包括细胞迁移、侵袭、炎症反应、神经细胞凋亡和细菌持久性细胞的形成等。
SGTB在多种疾病的发生和发展中发挥着重要作用。例如,在肝细胞癌(HCC)中,miR-365b通过下调SGTB的表达促进HCC细胞的迁移和侵袭[1]。在骨关节炎(OA)中,miR-142-5p通过竞争性结合长链非编码RNA(lncRNA)XIST,抑制SGTB的表达,从而保护软骨细胞免受炎症损伤[2]。在神经炎症中,SGTB的表达上调与神经元凋亡相关,沉默SGTB的表达可以抑制神经炎症引起的神经元凋亡[3]。此外,miR-133b通过靶向抑制SGTB的表达,减轻氧化低密度脂蛋白(oxLDL)诱导的血管内皮细胞损伤[4]。在金黄色葡萄球菌中,tcaA基因编码的SGTB与细菌持久性细胞的形成和糖肽类抗生素的耐药性相关[5]。在非小细胞肺癌(NSCLC)中,miR-514b-5p通过靶向SGTB的表达促进NSCLC的进展,并诱导PI3K/AKT和p38信号通路的激活[6]。在认知能力方面,SGTB与认知能力的维持和抵抗神经退行性疾病的能力相关[7]。此外,SGTB还与偏头痛和甲状腺功能的相关性研究有关[8]。
SGTB作为一种重要的蛋白质,在多种生物学过程中发挥着重要作用。SGTB的表达和功能调控机制复杂,涉及多种信号通路和分子相互作用。SGTB在多种疾病的发生和发展中发挥着重要作用,为疾病的治疗和预防提供了新的思路和策略。进一步研究SGTB的功能和调控机制,有助于深入理解其在疾病发生中的作用,并为开发新的治疗方法提供理论依据。
参考文献:
1. Tian, Qi, Sun, He-Fen, Wang, Wen-Jing, Ding, Jie, Di, Wen. 2019. miRNA-365b promotes hepatocellular carcinoma cell migration and invasion by downregulating SGTB. In Future oncology (London, England), 15, 2019-2028. doi:10.2217/fon-2018-0676. https://pubmed.ncbi.nlm.nih.gov/30943053/
2. Sun, Pengfei, Wu, Yunpeng, Li, Xuezhou, Jia, Yuhua. 2020. miR-142-5p protects against osteoarthritis through competing with lncRNA XIST. In The journal of gene medicine, 22, e3158. doi:10.1002/jgm.3158. https://pubmed.ncbi.nlm.nih.gov/31903636/
3. Cao, Maohong, Xu, Wei, Yu, Jian, Ke, Kaifu, Wu, Qiyun. 2013. Up-regulation of SGTB is associated with neuronal apoptosis after neuroinflammation induced by lipopolysaccharide. In Journal of molecular histology, 44, 507-18. doi:10.1007/s10735-013-9517-4. https://pubmed.ncbi.nlm.nih.gov/23820636/
4. Chen, Gang, Chen, Jiu-Lin, Wu, Jun. . [Effects of miR-133b on oxLDL-induced vascular endothelial cell injury by targeting SGTB]. In Zhongguo ying yong sheng li xue za zhi = Zhongguo yingyong shenglixue zazhi = Chinese journal of applied physiology, 37, 594-600. doi:10.12047/j.cjap.6111.2021.064. https://pubmed.ncbi.nlm.nih.gov/34821090/
5. Habib, Gul, Gul, Haji, Ahmad, Prevez, Mohamed Moussa, Ihab, Elansary, Hosam O. 2023. Teicoplanin associated gene tcaA inactivation increases persister cell formation in Staphylococcus aureus. In Frontiers in microbiology, 14, 1241995. doi:10.3389/fmicb.2023.1241995. https://pubmed.ncbi.nlm.nih.gov/37901830/
6. Shi, Lin, Kan, Jun, Zhuo, Lin, Zhang, Bei, Ke, Bin. 2022. Bioinformatics identification of miR-514b-5p promotes NSCLC progression and induces PI3K/AKT and p38 pathways by targeting small glutamine-rich tetratricopeptide repeat-containing protein beta. In The FEBS journal, 290, 1134-1150. doi:10.1111/febs.16639. https://pubmed.ncbi.nlm.nih.gov/36180981/
7. Yu, Lei, Tasaki, Shinya, Schneider, Julie A, De Jager, Philip L, Bennett, David A. . Cortical Proteins Associated With Cognitive Resilience in Community-Dwelling Older Persons. In JAMA psychiatry, 77, 1172-1180. doi:10.1001/jamapsychiatry.2020.1807. https://pubmed.ncbi.nlm.nih.gov/32609320/
8. Kaur, Inderdeep, Koul, Monika. . Exploring the sister cells of embryo sac: developmental and functional attributes. In The International journal of developmental biology, 66, 349-358. doi:10.1387/ijdb.220025mk. https://pubmed.ncbi.nlm.nih.gov/35980192/