Peptide antagonist of the androgen receptor.

Abstract:

:Androgen receptor (AR) is a steroid hormone receptor that is activated by endogenous androgens, mainly testosterone and 5alpha-dihydrotestosterone (5alpha-DHT). AR is also an important drug target, and AR antagonists (antiandrogens) have been widely used for prostate cancer therapy. Antiandrogens currently available on the market are all small molecules that antagonize AR function via binding to the ligand binding domain (LBD). AR peptide antagonist has been proposed as a 'mechanism-based' approach to directly block AR function by interrupting AR-protein interactions from the surface of the receptor. Without targeting the rigid ligand binding pocket within LBD, peptide antagonists allow more flexibility in structure design, and are likely to provide more efficient and complete blockade of AR function as compared to small molecule antagonists. AR interacts with a variety of proteins, and the interaction may be mediated by different functional domains of the receptor. Although varieties of AR-protein interfaces might serve as the target for peptide antagonist, majority of ongoing research is still focusing on peptides that target the LBD, which is mainly due to the abundance of structural information revealed by crystal structures. This review gives an overview of the current research attempts to develop AR peptide antagonists, particularly peptide antagonists that target the LBD and N-terminal domain (NTD). The challenges and opportunities for future discovery and development of peptide antagonists are discussed as well.

journal_name

Curr Pharm Des

authors

Gao W

doi

10.2174/138161210790963850

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

1106-13

issue

9

eissn

1381-6128

issn

1873-4286

pii

BSP/CPD/E-Pub/00012

journal_volume

16

pub_type

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