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Cancer Cell. 2005 Dec;8(6):437-9.

A knotty turnabout?: Akt1 as a metastasis suppressor.

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Department of Surgical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, USA.


Akt is well known to enhance malignancy and is recognized as a key target for antineoplastic therapies. However, intriguing findings reported by Yoeli-Lerner et al. in the November 23, 2005 issue of Molecular Cell, suggest a novel, antimetastasis function of Akt: activation of Akt1 inhibited invasion in some cancer cells. One possible mechanism for this surprising phenotype was that Akt activated the E3 ubiquitin ligase HDM2, causing ubiquitination and degradation of NFAT, an invasion-promoting factor. These findings clearly justify further investigations and, if validated in vivo, call for reevaluation of some Akt-targeting therapeutic strategies currently under development.

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