Inhibition of filamin-A reduces cancer metastatic potential.

Inhibition of filamin-A reduces cancer metastatic potential.
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DOI:
10.7150/ijbs.5577
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发表时间:
2013
影响因子:
9.2
通讯作者:
Shen Z
Shen Z
中科院分区:
生物学2区
文献类型:
--
作者:
Jiang X;Yue J;Lu H;Campbell N;Yang Q;Lan S;Haffty BG;Yuan C;Shen Z

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Filamin-A cross-links actin filaments into dynamic orthogonal networks, and interacts with an array of proteins of diverse cellular functions. Because several filamin-A interaction partners are implicated in signaling of cell mobility regulation, we tested the hypothesis that filamin-A plays a role in cancer metastasis. Using four pairs of filamin-A proficient and deficient isogenic cell lines, we found that filamin-A deficiency in cancer cells significantly reduces their migration and invasion. Using a xenograft tumor model with subcutaneous and intracardiac injections of tumor cells, we found that the filamin-A deficiency causes significant reduction of lung, splenic and systemic metastasis in nude mice. We evaluated the expression of filamin-A in breast cancer tissues by immunohistochemical staining, and found that low levels of filamin-A expression in cancer cells of the tumor tissues are associated with a better distant metastasis-free survival than those with normal levels of filamin-A. These data not only validate filamin-A as a prognostic marker for cancer metastasis, but also suggest that inhibition of filamin-A in cancer cells may reduce metastasis and that filamin-A can be used as a therapeutic target for filamin-A positive cancer.
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