Neural crest cell recruitment and reprogramming as central drivers of embryonic limb regeneration

Unlike regeneration-competent species, mammals lack epimorphic regeneration capacity, except for the most distal part of their digits. Here, we show that E10.5 mouse embryos can initiate regeneration of their forelimb bud (FB), but this capacity is lost by E12.5. Using comparative transcriptomics and in vivo lineage tracing approaches in the mouse embryo, we were able to identify a population of neural crest-derived cells (NCdCs) reexpressing early NC lineage molecular markers, Wnt1 and Foxd3,...