Nasreen Ayesha, Chowdhury Sribas, Selvam Dharani Alagar, Natarajan Vivek T
CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.
Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.
Results Probl Cell Differ. 2025;75:189-209. doi: 10.1007/978-3-031-91459-1_7.
Epigenetic mechanisms influence early developmental events, shaping gene expression in exciting ways that go beyond the DNA blueprint. The state of chromatin is governed by an interplay between various histone modifications, variants, nucleosome remodeling complexes, and other chromatin modifiers that work in sync to prime the chromatin for specific biological outcomes. In this chapter, we explore neural crest cells (NCCs), a critical progenitor population that retains the extensive developmental potential of their blastula origins. The formation and differentiation of NCCs into diverse cell types are influenced by the regulation of their acetylation state through various epigenetic factors. This chapter delves into the intricate interplay between histone acetylases (HATs) and deacetylases (HDACs), highlighting how these enzymes modify chromatin to create a permissive environment for the induction of NCCs and steer their fate toward the melanocytic lineage. The shift in acetylation profiles during the transition from melanocytes to melanoma suggests that the transcriptional machinery may override normal regulatory mechanisms, promoting a neural crest-like state in melanoma development. Epigenetic regulation, particularly through histone acetylation, plays a pivotal role in neural crest cell development and melanoma initiation offering potential therapeutic targets.
表观遗传机制影响早期发育事件,以超越DNA蓝图的令人兴奋的方式塑造基因表达。染色质的状态由各种组蛋白修饰、变体、核小体重塑复合物和其他染色质修饰因子之间的相互作用所控制,这些因子协同作用,使染色质为特定的生物学结果做好准备。在本章中,我们将探讨神经嵴细胞(NCCs),这是一种关键的祖细胞群体,保留了其囊胚起源的广泛发育潜力。NCCs形成并分化为多种细胞类型,受到各种表观遗传因素对其乙酰化状态的调节影响。本章深入探讨组蛋白乙酰转移酶(HATs)和脱乙酰酶(HDACs)之间复杂的相互作用,强调这些酶如何修饰染色质,为NCCs的诱导创造一个宽松的环境,并引导其命运走向黑素细胞谱系。从黑素细胞向黑色素瘤转变过程中乙酰化谱的变化表明,转录机制可能会超越正常的调节机制,在黑色素瘤发展过程中促进一种神经嵴样状态。表观遗传调控,特别是通过组蛋白乙酰化,在神经嵴细胞发育和黑色素瘤起始中起着关键作用,并提供了潜在的治疗靶点。
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