Steroid Hormone Receptor Signaling
Hormone Receptors and Molecular Signaling
Steroid Hormone Receptor Signaling
Classical steroid receptor signaling begins when an available steroid interacts with its intracellular receptor. Ligand binding changes receptor conformation and its association with chaperones, regulatory partners and nuclear DNA.
Steps vary by receptor
Some receptors undergo prominent movement from cytoplasm to nucleus. Others are already substantially nuclear. Receptor dimerization, DNA binding and interactions with other transcription factors contribute differently across steroid receptor families.
Gene regulation
Hormone response elements and cellular cofactors help determine which genes change. The resulting proteins can influence metabolism, tissue growth, immune activity or reproduction over different time scales.
A necessary distinction
Steroids can also generate rapid effects through pathways outside the classical transcriptional sequence. Demonstrating a rapid response does not erase genomic action, and detecting receptor binding does not prove that every steroid-sensitive gene has changed. Functional claims require the relevant tissue and downstream evidence.
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