Estrogen receptor, Progesterone receptor, Androgen receptor (ER, PR, AR)

Gonadal steroid receptors refer collectively to estrogen receptor (ER), progesterone receptor (PR), and androgen receptor (AR)—members of the nuclear receptor superfamily that mediate the physiological actions of the major sex steroids: estrogens, progestogens, androgens. These receptors are primarily intracellular, acting as ligand-activated transcription factors. Upon binding the respective hormone, they dimerize, bind to specific DNA response elements, and regulate the transcription of genes involved in sexual differentiation, reproductive function, growth, metabolism, and behavior. These receptors are encoded by distinct genes, have multiple isoforms (e.g., ERα, ERβ; PR-A, PR-B), and display tissue-specific distribution and regulation. Dysregulation or mutation of gonadal steroid receptors has major roles in hormone-dependent cancers (e.g., breast, prostate), reproductive system disorders, cardiovascular disease, and certain neuropsychiatric conditions. Drugs that modulate these receptors (antagonists, agonists, selective modulators) are important in therapy for these diseases, but their use involves distinct safety considerations due to widespread physiological effects. Note: "Gonadal steroid receptors" is a high-level category rather than a specific molecular target, so for structured data, each receptor (e.g., "Estrogen receptor," "Androgen receptor," "Progesterone receptor") should be cataloged separately for maximal precision.

Other names

Sex steroid receptorGonadal steroid hormone receptorNuclear sex steroid receptor

Antagonist binding blocks receptor activation; agonist binding causes receptor dimerization, DNA binding, and transcriptional modulation of target genes; selective receptor modulators display tissue-specific effects