A spatiotemporal atlas of cholestatic injury and repair in mice.
Baihua WuXinyi ShentuHaitao NanPengcheng GuoShijie HaoJiangshan XuShuncheng ShangguanLei CuiJin CenQiuting DengYan WuChang LiuYumo SongXiumei LinZhifeng WangYue YuanWen MaRonghai LiYikang LiQiwei QianWensi DuTingting LaiTao YangChuanyu LiuXiong MaAo ChenXun XuYiwei LaiLongqi LiuMiguel Angel EstebanLijian HuiPublished in: Nature genetics (2024)
Cholestatic liver injuries, characterized by regional damage around the bile ductular region, lack curative therapies and cause considerable mortality. Here we generated a high-definition spatiotemporal atlas of gene expression during cholestatic injury and repair in mice by integrating spatial enhanced resolution omics sequencing and single-cell transcriptomics. Spatiotemporal analyses revealed a key role of cholangiocyte-driven signaling correlating with the periportal damage-repair response. Cholangiocytes express genes related to recruitment and differentiation of lipid-associated macrophages, which generate feedback signals enhancing ductular reaction. Moreover, cholangiocytes express high TGFβ in association with the conversion of liver progenitor-like cells into cholangiocytes during injury and the dampened proliferation of periportal hepatocytes during recovery. Notably, Atoh8 restricts hepatocyte proliferation during 3,5-diethoxycarbonyl-1,4-dihydro-collidin damage and is quickly downregulated after injury withdrawal, allowing hepatocytes to respond to growth signals. Our findings lay a keystone for in-depth studies of cellular dynamics and molecular mechanisms of cholestatic injuries, which may further develop into therapies for cholangiopathies.
Keyphrases
- single cell
- liver injury
- drug induced
- rna seq
- gene expression
- high throughput
- liver fibrosis
- oxidative stress
- signaling pathway
- cardiovascular events
- high fat diet induced
- risk factors
- type diabetes
- dna methylation
- coronary artery disease
- skeletal muscle
- metabolic syndrome
- epithelial mesenchymal transition
- adipose tissue
- rectal cancer
- optical coherence tomography
- transcription factor
- prognostic factors