Androgen receptor nucleocytoplasmic trafficking - A one-way journey.
Molecular and cellular endocrinology(2023)
摘要
The androgen receptor (AR) is a key regulator of the growth and proliferation of prostate cancer. The majority of lethal castration-resistant prostate cancer (CRPC) growth is still dependent on AR activity. The AR need to be in the nucleus to exert its biological action as a transcription factor. As such, defining the mechanisms that regulate the subcellular localization of AR are important. Previously it was believed that AR was imported into the nucleus in a ligand-dependent manner and subsequently exported out of the nucleus upon ligand withdrawal. Recent evidence has challenged this decades-old paradigm and showed that the AR is degraded, not exported, in the nucleus. This review discusses the current understanding of how AR nucleocytoplasmic localization is regulated by import and through nuclear degradation.
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