LH/CG Receptor Models
HCG is studied for activation of luteinizing hormone/chorionic gonadotropin receptors in endocrine signaling systems.
Overview
What is HCG?
HCG is a glycoprotein hormone studied in reproductive endocrinology research for its interaction with luteinizing hormone/chorionic gonadotropin receptors. Laboratory models examine receptor activation, steroidogenic signaling, and gonadotropin pathway regulation under controlled research conditions.
HCG (Human Chorionic Gonadotropin) is supplied strictly as a reference material for in vitro and preclinical investigation. All characterization data described here is drawn from peer-reviewed literature and laboratory analysis; nothing herein constitutes a claim of clinical effect in humans.
Investigational Scope
Documented Research Areas
The following domains summarize directions explored across published studies and laboratory models. Each reflects observations reported in rodent models, in vitro systems, or the peer-reviewed record.
cAMP Steroidogenic Pathways
Research examines downstream cAMP signaling and steroidogenic enzyme expression in gonadal cell models.
Gonadotropin Biology
Used in controlled models investigating follicular, luteal, and Leydig cell signaling pathways.
Bioactivity Standards
HCG activity units support assay calibration and receptor-response comparisons in laboratory workflows.
Proposed Mechanism
Mechanistic Pathway
Mechanistic steps below are hypothesized from in vitro assays and animal-model data reported in the literature. They describe biochemical interactions observed under controlled experimental conditions.
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1
LH/CG Receptor Binding
HCG binds the LH/CG receptor, a G protein-coupled receptor expressed in reproductive endocrine tissues.
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2
cAMP Signal Activation
Receptor activation stimulates adenylyl cyclase and cAMP production, initiating downstream protein kinase A signaling.
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3
Steroidogenic Enzyme Regulation
Research models examine changes in StAR, CYP enzymes, and hormone biosynthesis markers following receptor activation.
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4
Subunit-Dependent Specificity
The beta subunit contributes biological specificity while the shared alpha subunit is common to several glycoprotein hormones.
Technical Data
Molecular Specifications
| Amino Acid Sequence | Alpha and beta glycoprotein subunits |
|---|---|
| Molecular Weight | Approx. 36.7 kDa |
| Molecular Formula | Glycoprotein hormone |
| CAS Number | 9002-61-3 |
| Storage | 2-8°C lyophilized; -20°C long-term when protocol requires |
References
Selected Literature
The following peer-reviewed references informed the research summaries on this page. Citations are provided for scientific context only.
- Ascoli M, et al. (2002). The lutropin/choriogonadotropin receptor, a 2002 perspective. Endocrine Reviews, 23(2), 141-174.
- Pierce JG & Parsons TF. (1981). Glycoprotein hormones: structure and function. Annual Review of Biochemistry, 50, 465-495.
- Themmen APN & Huhtaniemi IT. (2000). Mutations of gonadotropins and gonadotropin receptors. Endocrine Reviews, 21(5), 551-583.
- Segaloff DL & Ascoli M. (1993). The lutropin/choriogonadotropin receptor. Molecular Endocrinology, 7(11), 1351-1358.
- Cole LA. (2010). Biological functions of hCG and hCG-related molecules. Reproductive Biology and Endocrinology, 8, 102.
Research Disclaimer
This product is intended strictly for laboratory research purposes only. It is not a drug, food, cosmetic, or dietary supplement and is not intended to diagnose, treat, cure, or prevent any disease. It is not for human or animal consumption. All information presented is derived from published scientific literature and is provided for educational reference only. By purchasing, the buyer affirms they are a qualified researcher or institution and assume full responsibility for the safe and lawful handling of this material.