Wnt5A activates the calpain-mediated cleavage of filamin A.
Wnt5A activates the calpain-mediated cleavage of filamin A.
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DOI:
10.1038/jid.2008.433
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发表时间:
2009-07
期刊:
影响因子:
--
通讯作者:
Weeraratna AT
中科院分区:
文献类型:
--
作者:
O'Connell MP;Fiori JL;Baugher KM;Indig FE;French AD;Camilli TC;Frank BP;Earley R;Hoek KS;Hasskamp JH;Elias EG;Taub DD;Bernier M;Weeraratna AT
We have previously shown that Wnt5A and ROR2, an orphan tyrosine kinase receptor, interact to mediate melanoma cell motility. In other cell types, this can occur through the interaction of ROR2 with the cytoskeletal protein filamin A. Here, we found that filamin A protein levels correlated with Wnt5A levels in melanoma cells. Small interfering RNA (siRNA) knockdown of WNT5A decreased filamin A expression. Knockdown of filamin A also corresponded to a decrease in melanoma cell motility. In metastatic cells, filamin A expression was predominant in the cytoplasm, which western analysis indicated was due to the cleavage of filamin A in these cells. Treatment of nonmetastatic melanoma cells with recombinant Wnt5A increased filamin A cleavage, and this could be prevented by the knockdown of ROR2 expression. Further, BAPTA-AM chelation of intracellular calcium also inhibited filamin A cleavage, leading to the hypothesis that Wnt5A/ROR2 signaling could cleave filamin A through activation of calcium-activated proteases, such as calpains. Indeed, WNT5A knockdown decreased calpain 1 expression, and by inhibiting calpain 1 either pharmacologically or using siRNA, it decreased cell motility. Our results indicate that Wnt5A activates calpain-1, leading to the cleavage of filamin A, which results in a remodeling of the cytoskeleton and an increase in melanoma cell motility.
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DOI:
10.1111/j.1600-0749.2006.00322.x
发表时间:
2006-08-01
期刊:
PIGMENT CELL RESEARCH
影响因子:
--
作者:
Hoek, Keith S.;Schlegel, Natalie C.;Dummer, Reinhard
通讯作者:
Dummer, Reinhard
影响因子:
4.8
作者:
Delmas, C;Aragou, N;Manenti, S
通讯作者:
Manenti, S
影响因子:
3.6
作者:
Smith, AP;Weeraratna, AT;Becker, D
通讯作者:
Becker, D
影响因子:
11.4
作者:
Kühl, M;Sheldahl, LC;Moon, RT
通讯作者:
Moon, RT
影响因子:
64.8
作者:
Clark, EA;Golub, TR;Hynes, RO
通讯作者:
Hynes, RO