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Landscape of intercellular crosstalk in healthy and NASH liver revealed by single-cell secretome gene analysis

Xiong, Xuelian and Kuang, Henry and Ansari, Sahar and Liu, Tongyu and Gong, Jianke and Wang, Shuai and Zhao, Xu-Yun and Ji, Yewei and Li, Chuan and Guo, Liang and others

Cell-cell communication via ligand-receptor signaling is a fundamental feature of complex organs. Despite this, the global landscape of intercellular signaling in mammalian liver has not been elucidated. Here we perform single-cell RNA sequencing on non-parenchymal cells isolated from healthy and NASH mouse livers. Secretome gene analysis revealed a highly connected network of intrahepatic signaling and disruption of vascular signaling in NASH. We uncovered the emergence of NASH-associated macrophages (NAM), which are marked by high expression of Triggering Receptor Expressed on Myeloid Cells 2 (Trem2), as a feature of mouse and human NASH that is linked to disease severity and highly responsive to pharmacological and dietary interventions. Finally, hepatic stellate cells (HSC) serve as a hub of intrahepatic signaling via HSC-derived stellakines and their responsiveness to vasoactive hormones. These results provide unprecedented insights into the landscape of intercellular crosstalk and reprogramming of liver cells in health and disease.

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Species: mouse
Number of cells: 33168
Number of downloads: 70
Study size: 1017MB
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