Genes influencing deposition of melanin in breast muscle of the Xuefeng black bone chicken based on bioinformatic analysis.

Genome(2023)

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摘要
The Xuefeng black bone chicken (XFBC) represents an important poultry genetic resource. However, the darkness in breast muscle is heterogeneous. The molecular genetic mechanisms underlying melanogenesis of breast muscle in XFBC remains unclear. This study used RNA-seq to compare the difference in transcriptome between hyperpigmentation and hypopigmentation of breast muscle. Six cDNA libraries were constructed for hyperpigmentation and hypopigmentation groups in XFBC. We identified 395 differently expressed genes (DEGs) between hyperpigmentation and hypopigmentation group (P<0.05, |log2FC|≥1). GO enrichment and KEGG pathway analysis indicated several differentially enriched biological functions and pathways involved in melanogenesis of the breast muscle. GSEA-GO analysis identified two significant gene sets, including the pathways of pigment metabolic process and transmembrane receptor protein tyrosine kinase activity. GSEA-KEGG analysis identified the process of tyrosine metabolism and several genes related with melanogenesis in breast muscle of the XFBC. The PPI network was constructed and eight genes were clustered in the module. We identified nine hub genes, including TYR, TYRP1, DCT, GPR143, MLANA, SLC24A5, GPNMB, MLPH, and EDNRB2. Taken together, the DEGs and hub genes identified in the article provide a solid basis for the study of the genetic regulatory mechanisms involved the melanogenesis in the breast muscle of the XFBC.
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关键词
black bone chicken,melanin,breast muscle,bioinformatic analysis
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