Transcriptome Analysis of Testicular Aging in Mice

Area of Science:

• Reproductive Biology
• Molecular Biology
• Aging Research

Background:

• Male reproductive aging, or andropause, is characterized by gradual declines in testicular function, sperm production, and erectile capacity.
• The testis is crucial for sperm and androgen production, making it central to male reproductive health.

Purpose of the Study:

• To investigate the transcriptional alterations in aging mouse testes.
• To identify messenger RNAs (mRNAs) and long non-coding RNAs (lncRNAs) associated with male reproductive aging.

Main Methods:

• Total RNA sequencing was performed on mouse testes across different age groups (3, 6, 12, and 18 months).
• Bioinformatic analyses were used to identify and characterize aging-related transcripts, including testis-specific and terminal aging-related RNAs.
• In silico methods predicted the functions and regulatory roles of identified lncRNAs.

Main Results:

• 1571 mRNAs and 715 lncRNAs showed age-related expression changes in mouse testes.
• Testis-specific aging-related transcripts (121 mRNAs, 25 lncRNAs) and terminal aging-related transcripts (46 mRNAs, 34 lncRNAs) were identified.
• Aging-related lncRNAs were found to potentially regulate nearby testis-specific genes.

Conclusions:

• This study identifies novel testicular aging-related mRNAs and lncRNAs in mice.
• The findings provide a foundation for understanding the molecular mechanisms of age-associated testicular dysfunction and male infertility.