Cell and Developmental Biology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda 20892, MD, USA.
Semin Cell Dev Biol. 2023 Mar 15;137:38-45. doi: 10.1016/j.semcdb.2021.11.014. Epub 2021 Nov 23.
Haploid gametes are produced from diploid parents through meiosis, a process inherent to all sexually reproducing eukaryotes. Faithful chromosome segregation in meiosis is essential for reproductive success, although it is less clear how the meiotic spindle achieves this compared to the mitotic spindle. It is becoming increasingly clear that tubulin post-translational modifications (PTMs) play critical roles in regulating microtubule functions in many biological processes, and meiosis is no exception. Here, I review recent advances in the understanding of tubulin PTMs in meiotic spindles, especially focusing on their roles in spindle integrity, oocyte aging, and non-Mendelian transmission.
单倍体配子是由二倍体亲本通过减数分裂产生的,减数分裂是所有有性繁殖真核生物所固有的过程。减数分裂中染色体的正确分离对于生殖成功至关重要,尽管与有丝分裂纺锤体相比,减数分裂纺锤体如何实现这一点还不太清楚。越来越明显的是,微管蛋白翻译后修饰(PTMs)在许多生物过程中调节微管功能中起着关键作用,减数分裂也不例外。在这里,我回顾了在理解减数分裂纺锤体中微管蛋白 PTM 方面的最新进展,特别是重点介绍它们在纺锤体完整性、卵母细胞衰老和非孟德尔遗传中的作用。