Molecular basis for the nerve dependence of limb regeneration in an adult vertebrate.
Molecular basis for the nerve dependence of limb regeneration in an adult vertebrate.
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DOI:
10.1126/science.1147710
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发表时间:
2007-11-02
期刊:
影响因子:
--
通讯作者:
Brockes JP
中科院分区:
文献类型:
--
作者:
Kumar A;Godwin JW;Gates PB;Garza-Garcia AA;Brockes JP
The limb blastemal cells of an adult salamander regenerate the structures distal to the level of amputation, and the surface protein Prod 1 is a critical determinant of their proximodistal identity. The Anterior Gradient protein family member nAG is a secreted ligand for Prod 1, and a growth factor for cultured newt blastemal cells. nAG is sequentially expressed after amputation in the regenerating nerve and the wound epidermis, the key tissues of the stem cell niche, and its expression in both locations is abrogated by denervation. The local expression of nAG after electroporation is sufficient to rescue a denervated blastema and regenerate the distal structures. Our analysis brings together the positional identity of the blastema and the classical nerve dependence of limb regeneration.
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