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Link to original content: https://pubmed.ncbi.nlm.nih.gov/24849229/
Mechanisms underlying vertebrate limb regeneration: lessons from the salamander - PubMed Skip to main page content
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. 2014 Jun;42(3):625-30.
doi: 10.1042/BST20140002.

Mechanisms underlying vertebrate limb regeneration: lessons from the salamander

Jeremy P Brockes  1 , Phillip B Gates  1
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Mechanisms underlying vertebrate limb regeneration: lessons from the salamander

Jeremy P Brockes et al. Biochem Soc Trans. 2014 Jun.

Abstract

Limb regeneration in adult salamanders proceeds by formation of a mound of progenitor cells called the limb blastema. It provides several pointers for regenerative medicine. These include the role of differentiated cells in the origin of the blastema, the role of regenerating axons of peripheral nerves and the importance of cell specification in conferring morphogenetic autonomy on the blastema. One aspect of regeneration that has received less attention is the ability to undergo multiple episodes without detectable change in the outcome, and with minimal effect of aging. We suggest that, although such pointers are valuable, it is important to understand why salamanders are the only adult tetrapod vertebrates able to regenerate their limbs. Although this remains a controversial issue, the existence of salamander-specific genes that play a significant role in the mechanism of regeneration provides evidence for the importance of local evolution, rather than a purely ancestral mechanism. The three-finger protein called Prod1 is discussed in the present article as an exemplar of this approach.

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