生物
基因沉默
锌指
异位表达
基因亚型
转录因子
基因
染色质
抄写(语言学)
细胞生物学
基因表达调控
心理压抑
维甲酸
遗传学
作者
Santanu Adhikary,Vipin Singh,Ramesh Choudhari,Barbara Yang,Swagata Adhikari,Enrique I Ramos,Soumi Chaudhuri,Siddhartha Roy,Shrikanth S. Gadad,Chandrima Das
标识
DOI:10.1038/s41419-022-05212-x
摘要
Abstract Zinc Finger transcription factors are crucial in modulating various cellular processes, including differentiation. Chromatin reader Zinc Finger MYND (Myeloid, Nervy, and DEAF-1) type containing 8 (ZMYND8), an All-Trans Retinoic Acid (ATRA)-responsive gene, was previously shown to play a crucial role in promoting the expression of neuronal-lineage committed genes. Here, we report that ZMYND8 promotes neuronal differentiation by positively regulating canonical MAPT protein-coding gene isoform, a key player in the axonal development of neurons. Additionally, ZMYND8 modulates gene-isoform switching by epigenetically silencing key regulatory regions within the MAPT gene, thereby suppressing the expression of non-protein-coding isoforms such as MAPT213 . Genetic deletion of ZMYND8 led to an increase in the MAPT213 that potentially suppressed the parental MAPT protein-coding transcript expression related to neuronal differentiation programs. In addition, ectopic expression of MAPT213 led to repression of MAPT protein-coding transcript. Similarly, ZMYND8-driven transcription regulation was also observed in other neuronal differentiation-promoting genes. Collectively our results elucidate a novel mechanism of ZMYND8-dependent transcription regulation of different neuronal lineage committing genes, including MAPT , to promote neural differentiation.
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