Ptbp1 is not required for retinal neurogenesis and cell fate specification.

ABSTRACT: The RNA-binding protein Ptbp1 has been proposed as a master regulator of neuronal fate, repressing neurogenesis through its effects on alternative splicing and miRNA maturation. While prior studies using RNA interference suggested that Ptbp1 loss promotes neurogenesis, recent genetic studies have failed to replicate glia-to-neuron conversion following Ptbp1 loss of function. To evaluate the role of Ptbp1 in developmental neurogenesis in vivo, we conditionally disrupted Ptbp1 in retinal progenitors. Ptbp1 was robustly expressed in both retinal progenitors and Müller glia but absent from postmitotic neurons, and efficient loss of function in mutant animals was confirmed using immunostaining for Ptbp1. Furthermore, bulk RNA-Seq at E16 revealed accelerated expression of la

SUBMITTER: Appel H 

PROVIDER: S-EPMC12236599 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature