Single-nucleus RNA sequencing defines adipose tissue subpopulations that contribute to Tibetan pig cold adaptation
文献类型： 外文期刊
作者： Liu, Jiali 1 ; Jiang, Yao 2 ; Liu, Tianxia 3 ; Chen, Chuanhe 1 ; Chui, Linya 1 ; Cui, Along 3 ; Zhang, Xueping 1 ; Wang, Xiao 1 ; Wang, Yu 3 ; Yang, Chunhuai 1 ; Zhang, Ying 3 ; Wu, Tianwen 1 ; Yang, Shulin 1 ; Huang, Jiaojiao 9 ; Tao, Cong 1 ; Zhao, Jianguo 3 ; Wang, Yanfang 1 ;
作者机构： 1.Chinese Acad Agr Sci CAAS, Inst Anim Sci, State Key Lab Anim Biotech Breeding, Beijing 100193, Peoples R China
2.Natl Anim Husb Serv, Beijing 100125, Peoples R China
3.Chinese Acad Sci, Inst Zool, State Key Lab Stem Cell & Reprod Biol, Beijing 100101, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Lnstitute Stem Cell & Regenerat, Beijing 100101, Peoples R China
6.Beijing Inst Stem Cell & Regenerat Med, Beijing 100101, Peoples R China
7.Univ Sci & Technol China, Div Life Sci & Med, Hefei 230026, Peoples R China
8.Gansu Agr Univ, Coll Anim Sci & Technol, Lanzhou 730070, Peoples R China
9.Qingdao Agr Univ, Coll Life Sci, Qingdao 266109, Peoples R China
10.Hainan Acad Agr Sci, Sanya Inst, Sanya 572025, Peoples R China
关键词： Pig; snRNA-seq; Adipocytes; Subpopulations; Cold stimulation
期刊名称：BMC BIOLOGY （ 影响因子：4.5； 五年影响因子：5.4 ）
ISSN：
年卷期： 2025 年 23 卷 1 期
页码：
收录情况： SCI
摘要： BackgroundThermogenic beige adipocyte displays a remarkable ability in mammals to adapt to cold environments, but the underlying cellular mechanisms remain unclear, especially in pigs that lack functional UCP1.ResultsMultilocular beige adipocytes were observed in both Tibetan pigs (cold-tolerant) and Bama pigs (cold-sensitive) after short-term cold exposure (4 degrees C for 3 days). Through single-nucleus RNA sequencing of adipose tissues, including subcutaneous inguinal adipose tissues (IAT) and perirenal adipose tissues (PAT), from both pig breeds at room temperature and cold treatment conditions, we discovered two cell subpopulations specific to Tibetan pigs, PDGFR alpha+EBF2High in IAT and ADIPOQ+HIF1AHigh in both depots. PDGFR alpha+EBF2High cells were characterized as potential beige precursors, while ADIPOQ+HIF1AHigh cells were found to express highly thermogenic-related genes. Despite the decrease of the lipogenic subpopulation and the increase of the lipolytic and the thermogenic subpopulations observed in both pig breeds upon cold treatment, Tibetan pigs exhibited stronger cellular and molecular responses compared to Bama pigs. Remarkably, cold-induced de novo beige adipogenesis and white adipocyte browning, likely occurred in Tibetan pigs, while Bama pigs relied more heavily on white browning. Moreover, BMP7, which was highly expressed in the PDGFR alpha+EBF2High subpopulation, positively regulates porcine beige thermogenic capacity.ConclusionsOur data offers a comprehensive and unprecedented perspective on the heterogeneity and plasticity of adipose tissues of pigs and broadens the understanding of beige fat biology in mammals.
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