Single-Nucleus RNA-Seq Reveals Spermatogonial Stem Cell Developmental Pattern in Shaziling Pigs

Area of Science:

• Reproductive Biology
• Developmental Biology
• Genomics

Background:

• Spermatogenesis relies on spermatogonial stem cells (SSCs) for sustained sperm production.
• Understanding SSC development is vital for male fertility and the pig industry.
• Shaziling pigs are economically important for meat quality and early sexual maturity.

Purpose of the Study:

• To investigate testicular development and SSC patterns in Shaziling pigs.
• To identify regulatory genes and pathways governing SSC self-renewal and maintenance.
• To discover novel SSC markers for isolation and sorting.

Main Methods:

• Single-cell transcriptomics of 82,027 cells from nine Shaziling pig testes across three developmental stages.
• Generation of an unbiased cell developmental atlas.
• Immunofluorescence staining using UCHL1 and KIT markers.

Main Results:

• Elucidation of SSC development within the niche in Shaziling pigs.
• Identification of potential marker genes and signaling pathways regulating SSCs.
• Intensive study of spermatogonial developmental patterns using specific protein markers.

Conclusions:

• The study provides a comprehensive understanding of SSC development in Shaziling pigs.
• Identified novel markers and pathways offer insights for improving SSC isolation and breeding strategies.
• This research serves as a valuable reference for Shaziling pig breeding programs.