eLife Assessment
This study presents a valuable finding that the Par polarity complex, but not Crumbs or Scrib, regulates morphological remodeling during the naive-to-primed transition of pluripotent stem cells, with later effects on differentiation and neural tube organoid lumen formation. The evidence is incomplete, as the developmental significance of the PAR KO phenotype requires clearer framing and deeper characterization, and the proposed signaling pathway is currently presented more strongly than the data support. The work will be of interest to developmental and stem cell biologists studying polarity, pluripotent-state transitions, epithelialization, and lumen formation.
