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Genetic and epigenetic regulators of retinal Müller glial cell reprogramming

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摘要 Background:Retinal diseases characterized with irreversible loss of retinal nerve cells,such as optic atrophy and retinal degeneration,are the main causes of blindness.Current treatments for these diseases are very limited.An emerging treatment strategy is to induce the reprogramming of Müller glial cells to generate new retinal nerve cells,which could potentially restore vision.Main text:Müller glial cells are the predominant glial cells in retinae and play multiple roles to maintain retinal homeostasis.In lower vertebrates,such as in zebrafish,Müller glial cells can undergo cell reprogramming to regenerate new retinal neurons in response to various damage factors,while in mammals,this ability is limited.Interestingly,with proper treatments,Müller glial cells can display the potential for regeneration of retinal neurons in mammalian retinae.Recent studies have revealed that dozens of genetic and epigenetic regulators play a vital role in inducing the reprogramming of Müller glial cells in vivo.This review summarizes these critical regulators for Müller glial cell reprogramming and highlights their differences between zebrafish and mammals.Conclusions:A number of factors have been identified as the important regulators in Müller glial cell reprogramming.The early response of Müller glial cells upon acute retinal injury,such as the regulation in the exit from quiescent state,the initiation of reactive gliosis,and the re-entry of cell cycle of Müller glial cells,displays significant difference between mouse and zebrafish,which may be mediated by the diverse regulation of Notch and TGFβ(transforming growth factor-β)isoforms and different chromatin accessibility.
出处 《Advances in Ophthalmology Practice and Research》 2023年第3期126-133,共8页 眼科实践与研究新进展(英文)
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