Journal of Capital Medical University ›› 2023, Vol. 44 ›› Issue (2): 203-211.doi: 10.3969/j.issn.1006-7795.2023.02.004

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Immune characteristics of short-term chronic obstructive pulmonary disease model

Zhang Hanxiao1#, Duan Luo1#, Zhang Muzhi1, Zhang Ruoyang1,3, Zhao Liuyinuo1, Zhou Ruonan1, Li Yunqi1, Lyu Zhe1, Wang Jingjing2,  Yuan Huihui1, Cui Ye1,Sun Ying1,Wang Wei1*   

  1. 1.Department of Immunology, School of Basic Medical Science, Capital Medical University, Beijing 100069, China; 2. Department of Laboratory Animal Sciences, Capital Medical University,Beijing 100069, China; 3. Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital; Beijing 100029, China;National Center for Respiratory Medicine, Beijing 100029, China
  • Received:2023-01-24 Online:2023-04-21 Published:2023-04-17
  • Supported by:
    This study was supported by National Natural Science Foundation of China(82090013),High-level Teacher Team Building Support Plan for High-level Innovation Team Building Plan in Beijing Municipal Universities(IDHT20190510)

Abstract:

Objective  To analyze the immune characteristics of short-term chronic obstructive pulmonary disease (COPD) model induced by peptide challenge after smoking exposure. Methods  A short-term murine model of COPD was established by smoking sensitization and peptide infusion challenge. Airway inflammation was analyzed by histological staining sections of lung tissues and cells of bronchoalveolar lavage fluid. An invasive lung function test was used to measure changes of lung respiratory mechanical parameters in experimental mice.The Luminex instrument platform was employed to quantify concentrations of cytokines in lung homogenates. Flow cytometry was used to measure changes in the numbers and proportions of subsets of T helper (Th) cells  and innate lymphoid cells (ILCs) in mouse lung tissues. Results  The data showed that short-term tobacco smoke exposure and peptide challenge caused damage of the alveoli, induced airways inflammation with neutrophil infiltration, increased the expression of type 3 cytokines and the numbers of Th17 and ILC3, while decreased proportion of ILC1 and ILC2. Conclusion  The short-term COPD models of smoke sensitization and peptide challenge are dominated by type 3 immunity, in which ILC3 may play a more important role than Th17.

Key words: chronic obstructive pulmonary disease, cigarette smoke, innate lymphoid cells

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