The power of mouse genetics to study spermatogenesis

Area of Science:

• Reproductive Genetics
• Human Genetics
• Male Infertility Research

Background:

• Male factor infertility impacts approximately 40 million people globally, necessitating advancements in reproductive genetics.
• Despite significant progress in basic science, including over 400 mutant mouse models and human association studies, clinical translation for infertility diagnosis and treatment remains slow.
• Current genetic diagnostics for male infertility primarily identify chromosomal abnormalities and Y-chromosome microdeletions.

Purpose of the Study:

• To highlight the critical need for enhanced genetic investigations in male infertility.
• To identify future research directions focusing on specific spermatozoal defects in infertile men.
• To bridge the gap between basic research findings and clinical applications in human reproductive health.

Main Methods:

• Review of current genetic findings in male infertility.
• Analysis of progress in animal models and human association studies.
• Anticipation of future research trends in reproductive genetics.

Main Results:

• Over 400 mutant mouse models for reproductive abnormalities have been created.
• Numerous human genetic associations with infertility have been discovered.
• Clinical application of genetic findings in male infertility diagnosis and treatment shows modest progress.

Conclusions:

• Future genetic investigations should target infertile men with normal karyotypes exhibiting specific sperm defects (oligozoospermia, asthenozoospermia, teratozoospermia).
• Advances in nonhuman mammalian reproduction are expected to drive clinical progress in human reproductive testing and healthcare.
• Enhanced genetic understanding is crucial for improving diagnostics and patient care for male infertility.