Wells Melissa L, Perera Lalith, Blackshear Perry J
Signal Transduction Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA.
Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA.
Trends Biochem Sci. 2017 Apr;42(4):285-296. doi: 10.1016/j.tibs.2016.12.003. Epub 2017 Jan 14.
RNA-binding proteins are important modulators of mRNA stability, a crucial process that determines the ultimate cellular levels of mRNAs and their encoded proteins. The tristetraprolin (TTP) family of RNA-binding proteins appeared early in the evolution of eukaryotes, and has persisted in modern eukaryotes. The domain structures and biochemical functions of family members from widely divergent lineages are remarkably similar, but their mRNA 'targets' can be very different, even in closely related species. Recent gene knockout studies in species as distantly related as plants, flies, yeasts, and mice have demonstrated crucial roles for these proteins in a wide variety of physiological processes. Inflammatory and hematopoietic phenotypes in mice have suggested potential therapeutic approaches for analogous human disorders.
RNA结合蛋白是mRNA稳定性的重要调节因子,mRNA稳定性是一个关键过程,它决定了mRNA及其编码蛋白在细胞中的最终水平。RNA结合蛋白的三联四脯氨酸(TTP)家族在真核生物进化早期就已出现,并在现代真核生物中一直存在。来自广泛不同谱系的家族成员的结构域结构和生化功能非常相似,但它们的mRNA“靶点”可能非常不同,即使在亲缘关系很近的物种中也是如此。最近在植物、果蝇、酵母和小鼠等亲缘关系很远的物种中进行的基因敲除研究表明,这些蛋白在多种生理过程中发挥着关键作用。小鼠的炎症和造血表型为类似人类疾病提供了潜在的治疗方法。