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- W3100702905 abstract "Abstract Salamanders, frog tadpoles, and diverse lizards have the remarkable ability to regenerate tails. Paleontological data suggests that this capacity is plesiomorphic, yet when the developmental and genetic architecture of tail regeneration arose is poorly understood. Here we show morphological and molecular hallmarks of tetrapod tail regeneration in the West African lungfish Protopterus annectens , a living representative of the sister group of tetrapods. As in salamanders, lungfish tail regeneration occurs via formation of a proliferative blastema and restores original structures, including muscle, skeleton and spinal cord. In contrast to lizards and similar to salamanders and frogs, lungfish regenerate spinal cord neurons and reconstitute dorsoventral patterning of the tail. Similar to salamander and frog tadpoles, Shh is required for lungfish tail regeneration. Through RNA-seq analysis of uninjured and regenerating tail blastema, we show that the genetic program deployed during lungfish tail regeneration maintains extensive overlap with that of tetrapods, with the upregulation of genes and signaling pathways previously implicated in amphibian and lizard tail regeneration. Furthermore, the lungfish tail blastema showed marked upregulation of genes encoding post-transcriptional RNA processing components and transposon-derived genes. Our results show that developmental processes and genetic program of tetrapod tail regeneration were present at least near the base of the sarcopterygian clade and establish the lungfish as a valuable research system for regenerative biology." @default.
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- W3100702905 date "2020-02-13" @default.
- W3100702905 modified "2023-09-26" @default.
- W3100702905 title "Salamander-like tail regeneration in the West African lungfish" @default.
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- W3100702905 doi "https://doi.org/10.1101/2020.02.12.946319" @default.
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