Brian W Basinski, Yuanhao Huang, Qiang Li, Charukesi D Sivakumar, Tyler J Carman, Hana M Pan, Jing Xu, D Ford Hannum, Jie Liu, Rajesh C Rao
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A zinc finger-dependent, PRDM13-driven mechanism regulates retinal progenitor cell fate from mouse embryonic stem cells via WNT signaling.
The transcriptional regulation underlying eye field (retinal primordium) development requires precise control, yet the mechanisms guiding lineage-specific differentiation within the central nervous system (CNS) remain incompletely understood. Using neuroectoderm (NE) organoids derived from mouse embryonic stem cells, we investigate the role of PRDM13 in eye field specification. We demonstrate that Prdm13 expression inhibits RX+ eye field fate but permits non-eye field NE differentiation, an effect that depends on its first and second zinc-finger domains. Prdm13 activates the WNT/β-catenin signaling pathway during differentiation, leading to downregulation of key transcription factors crucial for establishing the eye field. Pharmacological inhibition of WNT signaling abolishes PRDM13-mediated suppression, restoring RX+ eye field differentiation. Our work reveals a previously undescribed PRDM13-WNT signaling axis that regulates lineage-specific neural differentiation of embryonic stem cells.
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Stem Cell Reports publishes high-quality, peer-reviewed research presenting conceptual or practical advances across the breadth of stem cell research and its applications to medicine. Our particular focus on shorter, single-point articles, timely publication, strong editorial decision-making and scientific input by leaders in the field and a "scoop protection" mechanism are reasons to submit your best papers.
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