A truncated Wnt7a retains full biological activity in skeletal muscle.
A truncated Wnt7a retains full biological activity in skeletal muscle.
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DOI:
10.1038/ncomms3869
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发表时间:
2013
影响因子:
16.6
通讯作者:
Rudnicki, Michael A.
中科院分区:
文献类型:
--
作者:
von Maltzahn, Julia;Zinoviev, Radoslav;Chang, Natasha C.;Bentzinger, C. Florian;Rudnicki, Michael A.
Wnt signaling has essential roles during embryonic development and tissue homoeostasis. Wnt proteins are post-translationally modified and the attachment of a palmitate moiety at two conserved residues is believed to be a prerequisite for the secretion and function of Wnt proteins. Here we demonstrate that a mammalian Wnt protein can be fully functional without palmitoylation. We generate a truncated Wnt7a variant, consisting of the C-terminal 137 amino acids lacking the conserved palmitoylation sites and show that it retains full biological activity in skeletal muscle. This includes binding to and signaling through its receptor Fzd7 to stimulate symmetric expansion of satellite stem cells by activating the planar-cell polarity pathway and inducing myofibre hypertrophy by signaling through the AKT/mTOR pathway. Furthermore, this truncated Wnt7a shows enhanced secretion and dispersion compared with the full-length protein. Together, these findings open important new avenues for the development of Wnt7a as a treatment for muscle-wasting diseases and have broad implications for the therapeutic use of Wnts as biologics. Wnt7a regulates various aspects of skeletal muscle function. Here, the authors show that a truncated Wnt7a protein lacking the palmitoylation domain retains its biological activity in skeletal muscle, suggesting that simplified Wnt7a proteins may be viable as Wnt-based therapeutics.
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DOI:
10.1083/jcb.135.3.819
发表时间:
1996-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Reichsman F;Smith L;Cumberledge S
通讯作者:
Cumberledge S
影响因子:
4.7
作者:
Spinsanti, Paola;De Vita, Teresa;Nicoletti, Ferdinando
通讯作者:
Nicoletti, Ferdinando
影响因子:
4.1
作者:
Kurayoshi, Manabu;Yamamoto, Hideki;Kikuchi, Akira
通讯作者:
Kikuchi, Akira
影响因子:
--
作者:
von Maltzahn, J;Wulf, V;Willecke, K
通讯作者:
Willecke, K
影响因子:
64.5
作者:
Molenaar, M;vandeWetering, M;Clevers, H
通讯作者:
Clevers, H