RON Expression Mediates Lipopolysaccharide-Mediated Dendritic Cell Maturation via March-I

Frontiers in Cellular and Infection Microbiology

Weifang Wu¹  Qiang Fang¹  Lingtong Huang¹  Xueling Fang¹  Hangping Yao²  Xuan Zhang³ 

[1] Department of Critical Care Units, The First Affiliated Hospital, Zhejiang University, School of Medicine, Hangzhou, China;State Key Laboratory for Diagnosis & Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University, School of Medicine, Hangzhou, China;State Key Laboratory for Diagnosis & Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University, School of Medicine, Hangzhou, China;Department of Infectious Disease, The First Affiliated Hospital, Zhejiang University, School of Medicine, Hangzhou, China;

关键词: dendritic cells;    Recepteur d’origine nantais;    ubiquitination;    March-I;    lipopolysaccharide;   

DOI  :  10.3389/fcimb.2020.606340

来源: Frontiers

【 摘 要 】

The macrophage stimulating protein (MSP)–Recepteur d’origine nantais (RON) signaling pathway regulates macrophage function. Here, we verified RON receptor expression in bone marrow-derived dendritic cells (BMDCs) by real time-PCR, Western blot, and flow cytometry. Flow cytometry was used to detect the changes in MHC II and CD86 expression following the inhibition of RON in BMDCs and splenic dendritic cells (DCs). Immunoprecipitation and Western blot were used to detect the level of MHC II and CD86 ubiquitination. An enzyme-linked immunosorbent assay was used to detect cytokine release, and a mixed lymphocyte reaction was performed to evaluate DC maturity. The results show that the inhibition of RON leads to an increase in March-1 transcription, which intensifies the ubiquitination of MHC II and CD86 and ultimately leads to a decreased level of these two molecules. The mixed lymphocyte reaction provided evidence that RON inhibition decreased the ability of DCs to promote the proliferation of T cells. The MSP-RON signaling pathway may play an important role in lipopolysaccharide (LPS)-stimulated DC maturation through March-I and may protect DC differentiation following LPS stimulation.

【 授权许可】

CC BY