Identification of SWI/SNF Subcomplex GBAF Presence, Intra-Complex Interactions, and Transcriptional Dynamics during...

Area of Science:

• Epigenetics and Developmental Biology
• Mammalian Development
• Livestock Genetics

Background:

• Epigenetic mechanisms are crucial for animal growth and development, yet their role in livestock remains underexplored.
• The GBAF chromatin remodeling complex is a key epigenetic regulator, but its function in early mammalian development requires further investigation.
• Understanding these processes is vital for improving livestock production efficiency and animal health.

Purpose of the Study:

• To investigate the presence and role of the GBAF chromatin remodeling complex during embryonic and fetal development in swine.
• To identify interactions between GBAF subunits and analyze their transcriptional dynamics in early porcine development.
• To elucidate the contribution of GBAF to key developmental events in mammals.

Main Methods:

• Immunocytochemistry and co-immunoprecipitation were used to detect GBAF subunits (BRD9, GLTSCR1) in porcine oocytes, embryos, and cell lines.
• Analysis of existing RNA-seq datasets to determine the transcriptional dynamics of GBAF subunits during key developmental stages.
• Investigating protein-protein interactions within the GBAF complex.

Main Results:

• BRD9 and GLTSCR1 subunits of the GBAF complex were detected in all examined stages of porcine early development.
• A novel interaction between GLTSCR1 and BAF170 was identified in porcine cell lines (PTr2 and PFF).
• Transcriptional dynamics suggest specific roles for GBAF subunits in critical developmental events.

Conclusions:

• The GBAF chromatin remodeling complex is ubiquitously present during early swine development.
• The identified GLTSCR1-BAF170 interaction presents a potentially novel mechanism in swine development.
• This research enhances understanding of epigenetic regulation in mammalian development, highlighting GBAF's role.