Chronic cold stress induced transcriptomic alterations in multi-metabolically active tissues of pigs

作者：Bo Huang, Yurui Bai, Xun Bo Zhou, Tian Xue, Xun Wang, Jing Li, Lun Hua, Xiaocong Fan, Mingzhou Li · 发表于：Communications Biology · 年份：2025 · DOI：10.1038/s42003-025-09226-x · 被引用次数：4 · 研究领域：Effects of Environmental Stressors on Livestock、Adipose Tissue and Metabolism、Animal Behavior and Welfare Studies

Cold stress poses significant challenges to livestock production; however, the regulatory mechanisms underlying porcine responses to chronic cold stress remain inadequately understood. To address this gap, we characterized the transcriptional responses of five metabolism-related tissues to chronic cold stress via bulk RNA sequencing. Our findings revealed tissue-specific transcriptional responses to cold stress, with skeletal muscle-particularly the longissimus dorsi muscle (LDM)-exhibiting the most pronounced changes. Furthermore, single-nucleus RNA sequencing analysis revealed cellular heterogeneity and metabolic remodeling in the LDM, which were induced by chronic cold stress. Specifically, chronic cold stress alters the proportions of key cell types-especially myonuclei, fibroblasts, and immune cells-enhances metabolic processes such as glucose metabolism and oxidative phosphorylation, and reduces intercellular communication related to growth signaling, particularly within the IGF pathway. Notably, we identified a distinct subset of oxidative metabolizing fibroblasts in skeletal muscle, potentially regulated by transcription factors such as CREB3L1, EGR1, EGR2, BHLHE41, and KLF5, as well as the CXCL signaling pathway, in response to chronic cold stress. Moreover, increased energy intake enhances cold stress-induced metabolic strategies without allocating energy to growth, adipose storage, or immune responses. These findings elucidate the adaptive transcriptional and metab...