Recombinant Human Chorionic Gonadotropin protein (denatured)

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Chorionic Gonadotropin often called hCG is a glycoprotein hormone essential for reproductive processes. With a molecular mass of about 37 kDa it consists of an alpha and beta subunit. It shares the alpha subunit with other pituitary glycoprotein hormones but the beta subunit is distinct and gives hCG its unique biological activity. The hormone is mainly expressed in the placenta during pregnancy supporting corpus luteum function and stimulating the production of progesterone. This expression plays a primary role in maintaining the early stages of pregnancy.

Biological function summary

HCG promotes fetal development and modulates the maternal immune response to support a successful pregnancy. It acts as a signal between the developing placenta and maternal cells. Furthermore hCG belongs to a hormone-receptor complex binding to the luteinizing hormone/chorionic gonadotropin receptor (LH/CG receptor) on target tissues. This interaction triggers intracellular pathways that are vital for maintaining pregnancy dynamics.

Pathways

HCG is integral in reproductive and endocrine signaling pathways. Participating in the cAMP-dependent signaling pathway it activates adenylate cyclase after binding to its receptor increasing cyclic AMP levels and protein kinase A (PKA) activity. hCG is also related to luteinizing hormone (LH) and follicle-stimulating hormone (FSH) as they share the alpha subunit and interact with similar receptors facilitating communication within reproductive hormonal pathways.

HCG serves as a biomarker for certain trophoblastic diseases and testicular cancer. Elevated levels of hCG may indicate gestational trophoblastic disease while abnormal hCG patterns can be associated with testicular cancer in males. Additionally hCG levels relate to disorders like hyperemesis gravidarum a severe form of nausea during pregnancy. Its interactions with proteins such as the LH/CG receptor play a part in these disease contexts offering diagnostic and potential therapeutic insights.