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In this issue, Chen et al. (2017. J. Cell Biol. https://doi.org/10.1083/jcb.201604025) show that Importin-11 traffics the tumor suppressor PTEN into the nucleus and in so doing protects it from cytoplasmic proteins that cause PTEN degradation. This work helps explain the nuclear accumulation of PTEN observed in many healthy tissues and, because Ipo11 mutant mice develop lung tumors, also implicates Importin-11 as a novel tumor suppressor. © 2017 Leslie.
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Nick R Leslie. Importin-11 keeps PTEN safe from harm. The Journal of cell biology. 2017 Mar 06;216(3):539-541
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PMID: 28193699
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