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- W2989525935 abstract "Abstract A highly upregulated gene during tail regeneration in lizards is Wnt2b , a gene broadly expressed during development. The present study examines the distribution of Wnt proteins, most likely wnt2b, by western blotting and immunofluorescence in the blastema‐cone of lizards using a specific antibody produced against a lizard Wnt2b protein. Immunopositive bands at 48–50 and 18 kDa are present in the regenerative blastema, the latter likely as a degradation product. Immunofluorescence is mainly observed in the wound epidermis, including in the Apical Epidermal Peg where the protein appears localized in intermediate and differentiating keratinocytes. Labeling is more intense along the perimeter of keratinocytes, possibly as a secretory product, and indicates that the high epidermal proliferation of the regenerating epidermis is sustained by Wnt proteins. The regenerating spinal cord forms an ependymal tube within the blastema and shows immunolabeling especially in the cytoplasm of ependymal cells contacting the central canal where some secretion might occur. Also, regenerating nerves and proximal spinal ganglia innervating the regenerating blastema contain this signaling protein. In contrast, the blastema mesenchyme, muscles and cartilage show weak immunolabeling that tends to disappear in tissues located in more proximal regions, close to the original tail. However, a distal to proximal gradient of Wnt proteins was not detected. The present study supports the hypothesis that Wnt proteins, in particular Wnt2b, are secreted by the apical epidermis covering the blastema and released into the mesenchyme where they stimulate cell multiplication." @default.
- W2989525935 created "2019-11-22" @default.
- W2989525935 creator A5045239901 @default.
- W2989525935 date "2019-11-13" @default.
- W2989525935 modified "2023-10-18" @default.
- W2989525935 title "Immunolocalization of Wnts in the lizard blastema supports a key role of these signaling proteins for tail regeneration" @default.
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- W2989525935 doi "https://doi.org/10.1002/jmor.21080" @default.
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