PENG Ling 1,2 # , ZHANG Hua 3 # , TONG Xia 1,2 , ZHANG Xin 2,4 , ZHANG Lanlan 1
  • 1. Department of Respiratory and Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China;
  • 2. West China (Airport) Hospital of Sichuan University (The First People’s Hospital of Shuangliu District, Chengdu), Chengdu, Sichuan 610200, P. R. China;
  • 3. West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China;
  • 4. Division of Gastroenterology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China;
ZHANG Xin, Email: llzhang@scu.edu.cn; ZHANG Lanlan, Email: xinzhang201618@gmail.com
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Objective  To explore the role of high endothelial venule (HEV) in chronic obstructive pulmonary disease (COPD) at the single cell level. Methods  A total of 219257 cells from the lung tissues of 18 COPD patients and 28 healthy controls in the GEO public database (GSE136831) were used to analyze the relationship between HEV with T lymphocytes, B lymphocytes, and dendritic cells. Results  Endothelial cells were extracted using single cell analysis technique, and sorting out venous endothelium, CCL14, IGFBP7, POSTN were used as marker genes for HEV endothelial cells. The ratio of HEV endothelial cells was also identified as up-regulated expression in COPD. The function of the differential genes of HEV endothelial cells was analyzed, suggesting the presence of immune regulation. By trajectory analysis, it was suggested that the differential genes of HEV endothelial cells were enriched for extracellular matrix deposition in late development. Finally, by receptor-ligand pairing, it was suggested that HEV endothelial cells was recruited through a series of ligands with T lymphocytes, B lymphocytes, and dendritic cells. Conclusions  HEV endothelial cells are elevated in COPD and have an immunomodulatory role by secreting a series of ligands after recruiting T lymphocytes, B lymphocytes as well as dendritic cells for immune action. HEV may be a potential target for the study of COPD therapy.

Citation: PENG Ling, ZHANG Hua, TONG Xia, ZHANG Xin, ZHANG Lanlan. Single-cell RNA sequencing and analysis of high endothelial venule in chronic obstructive pulmonary disease for immune cell recruitment. Chinese Journal of Respiratory and Critical Care Medicine, 2022, 21(3): 170-177. doi: 10.7507/1671-6205.202201039 Copy

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