ArticleAnimals : an open access journal from MDPI2026
Multi-Omics Integration Identifies Key Pathways and Regulatory Genes Driving Marbling Formation and Meat Quality in Yunling Cattle.
Article in Animals : an open access journal from MDPI, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
Marbling, or intramuscular fat (IMF), is a primary determinant of high-quality beef, defining key sensory attributes and nutritional value. Yunling (YL) cattle, an indigenous breed from Yunnan, China, are renowned for their superior marbling, yet the underlying molecular mechanisms remain unclear. This study employed an integrated transcriptomic, lipidomic, and amino acid metabolomic approach to systematically compare the multi-omics profiles of the longissimus dorsi muscle among YL, Angus (AGS), and Simmental (XMTE) cattle. Transcriptome analysis identified 2053 and 2156 differentially expressed genes (DEGs) in XMTE vs. YL and AGS vs. YL, respectively. These DEGs were primarily enriched in the PI3K-Akt and MAPK signaling pathways, as well as oxidative phosphorylation. Lipidomic analysis revealed a distinct lipid profile in YL cattle, identifying 27 characteristic lipid molecules (e.g., SM(d20:0/24:1), DG(16:0/18:1(11Z)/0:0)) compared to XMTE and 17 differential lipids compared to AGS. The amino acid metabolome showed that Beta-Alanine and L-Aspartic acid levels in YL were 42.6% and 54.8% lower than in XMTE, respectively (
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