Gonadotropin-releasing hormone receptor

Gonadotropin-releasing hormone receptor (GnRHR) is a protein that in humans is encoded by the GNRHR gene. It is a receptor for the gonadotropin-releasing hormone (GnRH) that is produced in the hypothalamus. The GnRHR is found on the surface of pituitary gonadotrope cells, where it is necessary for sexual development and fertility.

Function

The GnRHR is a G protein-coupled receptor that is activated by the binding of GnRH. This binding triggers a cascade of intracellular events that result in the release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the pituitary gland. These hormones are crucial for reproduction, regulating the growth and function of the ovaries in women and the testes in men.

Clinical significance

Mutations in the GNRHR gene can lead to hypogonadotropic hypogonadism, a condition characterized by low levels of sex hormones and impaired sexual development. This condition can be treated with synthetic GnRH or with gonadotropin therapy.

In addition, GnRHR is a target for certain cancer therapies. Some types of cancer, such as prostate cancer and breast cancer, can be sensitive to levels of sex hormones. Therapies that block the GnRHR can reduce the levels of these hormones and slow the growth of the cancer.

See also

• Gonadotropin-releasing hormone
• G protein-coupled receptor
• Hypogonadotropic hypogonadism
• Luteinizing hormone
• Follicle-stimulating hormone

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