Molecular cell biology of androgen receptor signalling

The International Journal of Biochemistry & Cell Biology
Nigel C BennettGlenda C Gobe

Abstract

The classical action of androgen receptor (AR) is to regulate gene transcriptional processes via AR nuclear translocation, response element binding and recruitment of, or crosstalk with, transcription factors. AR also utilises non-classical, non-genomic mechanisms of signal transduction. These precede gene transcription or protein synthesis, and involve steroid-induced modulation of cytoplasmic or cell membrane-bound regulatory proteins. Despite many decades of investigation, the role of AR in gene regulation of cells and tissues remains only partially characterised. AR exerts most of its effects in sex hormone-dependent tissues of the body, but the receptor is also expressed in many tissues not previously thought to be androgen sensitive. Thus it is likely that a complex, more over-arching, role for AR exists. Each AR domain co-ordinates a multitude of individual and vital roles via a diverse array of interacting partner molecules that are necessary for cellular and tissue development and maintenance. Aberrant AR activity, promoted by mutations or binding partner misregulation, can present as many clinical manifestations including androgen insensitivity syndrome and prostate cancer. In the case of malignant prostate cancer, tr...Continue Reading

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