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Isolation of Preadipocytes from Broiler Chick Embryos
Published on: August 4, 2022
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Gene expression profiling in adipose tissue from growing broiler chickens.
Gary J Hausman1, C Rick Barb1, Brian D Fairchild2
1Poultry Processing and Swine Physiology Research; Agricultural Research Service; USDA ; Athens, GA USA.
Adipocyte
|August 29, 2015
Summary
This study reveals age-related changes in broiler chicken adipose tissue gene expression, particularly immune response genes like CC chemokine ligands (CCL) and toll-like receptor 2 (TLR2). These findings highlight the dynamic role of adipose tissue in chicken physiology.
Area of Science:
- Animal Science
- Genomics
- Immunology
Background:
- Adipose tissue plays a crucial role in animal growth and physiology by expressing and secreting various factors.
- Understanding gene expression in chicken adipose tissue is vital for optimizing broiler production and health.
Purpose of the Study:
- To investigate age-related global gene expression changes in broiler chicken abdominal adipose tissue.
- To identify specific genes and biological pathways influenced by age in chicken adipose tissue.
Main Methods:
- Gene microarray analysis using Affymetrix GeneChip Chicken Genome Arrays on RNA from broiler chickens at 3, 4, 5, and 6 weeks of age.
- Quantitative real-time PCR to validate the expression patterns of key genes, including CC chemokine ligands (CCL), toll-like receptor 2 (TLR2), and lipopolysaccharide-induced TNF factor (LITAF).
Main Results:
- Microarray analysis identified hundreds of differentially expressed genes between different ages, with significant changes observed between 3 and 6 weeks.
- Gene Ontology analysis revealed age-related upregulation of genes involved in immune system response.
- Quantitative PCR confirmed age-dependent increases in the expression of CCL5, CCL1, CCR8, TLR2, CCL19, and LITAF.
Conclusions:
- This study provides the first evidence of age-related alterations in CCL, LITAF, and TLR2 gene expression within chicken adipose tissue.
- The identified genes and pathways suggest a significant role for adipose tissue in modulating the immune system and potentially influencing growth in broiler chickens.
- Further research is warranted to fully elucidate the functional implications of these age-related gene expression changes in chicken adipose tissue.
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