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Updated: Aug 16, 2025
Functional Reconstitution and Channel Activity Measurements of Purified Wildtype and Mutant CFTR Protein
Published on: March 9, 2015
The role of CFTR channel in female infertility
1Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia.
Abstract:
The cystic fibrosis transmembrane conductance regulator (CFTR) is a cAMP-activated trans-membrane ATP gated anion channel present in most epithelia, which transports chloride and bicarbonate ions across the apical membrane. Mutations in the CFTR protein are known to result in defective expression or function, notably the inhibition of chloride and bicarbonate transport. This can result in cystic fibrosis (CF), a disorder characterised by thickness of the mucus lining of the epithelial cells of the alimentary and respiratory tracts, sweat ducts and reproductive organs. As a consequence, there is a reduction in fluid transport at the apical surface. While the most devastating effect of CF is mortality, about 98% of men with CF are infertile, consequent of early blockage of or failure to develop the mesonephrotic ducts as well as the vas deferens. The effect of CF of female fertility is less well-understood. This review highlights the genetics and pathophysiology as well as the mechanism of action of CF on female infertility.
Insights
Cystic fibrosis transmembrane conductance regulator (CFTR) dysfunction impairs ion transport, leading to cystic fibrosis. This review details CFTR
Area of Science:
- Molecular Biology
- Genetics
- Physiology
Background:
- Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) is an ion channel crucial for epithelial function.
- CFTR mutations cause cystic fibrosis (CF), characterized by mucus buildup and fluid transport defects.
- While male infertility in CF is well-documented, female infertility mechanisms are less understood.
Purpose of the Study:
- To review the genetics and pathophysiology of CFTR mutations.
- To elucidate the impact of CFTR dysfunction on female fertility.
- To explore the mechanisms underlying CF-related female infertility.
Main Methods:
- Literature review of genetics and pathophysiology of CFTR.
- Analysis of existing studies on CFTR function and epithelial transport.
- Synthesis of current knowledge on CFTR's role in female reproductive health.
Main Results:
- CFTR mutations lead to defective ion transport, impacting epithelial tissues.
- CF affects mucus viscosity and fluid balance in reproductive organs.
- Specific CFTR mechanisms contributing to female infertility are being identified.
Conclusions:
- CFTR dysfunction has significant implications for female fertility.
- Further research is needed to fully understand and address CF-related female infertility.
- Understanding these mechanisms can guide future therapeutic strategies.
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