Filamin A: Insights into its Exact Role in Cancers

Pathology Oncology Research : POR
Qian-Qian ShaoYu-Pei Zhao

Abstract

Filamin A (FlnA) is a well-known actin cross-linking protein. It serves as a scaffold for over 90 binding partners and involves in multiple cell functions, of which cell migration and adhesion is especially critical. Recently, its role in the cell has come under scrutiny for FlnA's involvement in cancer development. Originally revealed as a cancer-promoting protein, FlnA actually plays a dual role in cancers. When localized to the cytoplasm, FlnA has a tumor-promoting effect by interacting with signaling molecules. While once localized to the nucleus, it may act to suppress tumor growth and inhibit metastasis by interacting with transcription factors. Thus drugs that can cause FlnA to transpose from cytoplasm to nucleus could be a promising treatment for cancers. Study to this end is on the way in prostate cancer and the results are encouraging. FlnA has been studied in large categories of cancers, such as prostate cancer, breast cancer, melanoma, lung cancer, etc. However, most studies did not evaluate the differences that arise from the localization of the protein, which was a great pity! What's more, although FlnA's is undoubtedly important in cancer invasion and metastasis, both preclinical and clinical researches are very ...Continue Reading

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