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Updated: Aug 13, 2026
Mutagenesis and Analysis of Genetic Mutations in the GC-rich KISS1 Receptor Sequence Identified in Humans with Reproductive Disorders
Published on: September 4, 2011
[Pathologic manifestations of hormonal receptor mutations]
1Laboratoire d'Hormonologie et de Biologie Moléculaire, Unité 135 de l'INSERM: Hormones, Gènes et Reproduction, Hôpital de Bicêtre, Le Kremlin-Bicêtre. u135@kb.inserm.fr
Abstract:
Mutations of receptor genes are involved in various aspects of thyroid and gonadal pathology. Activating mutations of TSH and LH receptors are associated with hyperthyroidism and premature puberty. These mutations are dominant and lead to the synthesis of a constitutive receptor, i.e. a receptor active even in the absence of hormone. Inactivating mutations of TSH, gonadotropin and GnRH receptors are recessive. They determine either a hypothyroidism or a hypogonadism. In the case of alterations of gonadotropin receptors the hypogonadism is hypergonadotrophic. It is hypogonadotrophic in the case of mutations of the GnRH receptor.
Insights
Receptor gene mutations impact thyroid and reproductive health. Activating mutations cause overactivity (hyperthyroidism, premature puberty), while inactivating mutations lead to underactivity (hypothyroidism, hypogonadism).
Area of Science:
- Endocrinology
- Molecular Genetics
- Reproductive Biology
Context:
- Thyroid and gonadal pathologies are often linked to alterations in specific receptor genes.
- Thyroid-stimulating hormone (TSH) and luteinizing hormone (LH) receptors play critical roles in endocrine function.
Purpose:
- To elucidate the role of receptor gene mutations in thyroid and gonadal disorders.
- To differentiate the effects of activating versus inactivating mutations on receptor function and associated pathologies.
Summary:
- Activating mutations in TSH and LH receptors result in constitutive receptor activity, leading to hyperthyroidism and premature puberty, respectively. These mutations are typically dominant.
- Inactivating mutations in TSH, gonadotropin, and gonadotropin-releasing hormone (GnRH) receptors are recessive and cause hypothyroidism or hypogonadism.
- Specific types of hypogonadism are linked to receptor mutations: hypergonadotropic hypogonadism with gonadotropin receptor alterations and hypogonadotropic hypogonadism with GnRH receptor mutations.
Impact:
- Provides a framework for understanding the genetic basis of endocrine and reproductive diseases.
- Highlights the distinct clinical outcomes based on the type and location of receptor gene mutations.
- Informs potential diagnostic and therapeutic strategies for patients with thyroid and gonadal dysfunction.
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