Qi-Dong-Huo-Xue-Yin balances the immune microenvironment to protect against LPS induced acute lung injury

Tian Zhao; Le Wang; Yongjun Zhang; Wu Ye; Juan Liu; Haiyan Wu; Fei Wang; Tingyu Tang; Zhijun Li

doi:10.3389/fphar.2023.1200058

Qi-Dong-Huo-Xue-Yin balances the immune microenvironment to protect against LPS induced acute lung injury

Front Pharmacol. 2023 May 24:14:1200058. doi: 10.3389/fphar.2023.1200058. eCollection 2023.

Authors

Tian Zhao¹, Le Wang², Yongjun Zhang³, Wu Ye¹, Juan Liu¹, Haiyan Wu¹, Fei Wang¹, Tingyu Tang¹, Zhijun Li¹

Affiliations

¹ Department of Respiratory Medicine, Zhejiang Hospital, Hangzhou, Zhejiang, China.
² The Second Clinical Medical College Affiliated to Zhejiang University of Traditional Chinese Medicine, Hangzhou, Zhejiang, China.
³ The Cancer Hospital of the University of Chinese Academy of Sciences Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China.

Abstract

COVID-19 induces acute lung injury (ALI)/acute respiratory distress syndrome (ARDS) and leads to severe immunological changes that threatens the lives of COVID-19 victims. Studies have shown that both the regulatory T cells and macrophages were deranged in COVID-19-induced ALI. Herbal drugs have long been utilized to adjust the immune microenvironment in ALI. However, the underlying mechanisms of herbal drug mediated ALI protection are largely unknown. This study aims to understand the cellular mechanism of a traditional Chinese medicine, Qi-Dong-Huo-Xue-Yin (QD), in protecting against LPS induced acute lung injury in mouse models. Our data showed that QD intrinsically promotes Foxp3 transcription via promoting acetylation of the Foxp3 promoter in CD4⁺ T cells and consequently facilitates CD4⁺CD25⁺Foxp3⁺ Tregs development. Extrinsically, QD stabilized β-catenin in macrophages to expedite CD4⁺CD25⁺Foxp3⁺ Tregs development and modulated peripheral blood cytokines. Taken together, our results illustrate that QD promotes CD4⁺CD25⁺Foxp3⁺ Tregs development via intrinsic and extrinsic pathways and balanced cytokines within the lungs to protect against LPS induced ALI. This study suggests a potential application of QD in ALI related diseases.

Keywords: ALI; Foxp3; Qi-Dong-Huo-Xue-Yin; Tregs; macrophage; traditional Chinese medicine.

Grants and funding

Natural Science Foundation of China (81973590), Natural Science Foundation of Zhejiang Province (LY18H290008) provided financial support in the form of researcher funding.