单位:[1]Department of Clinical Immunology,Tongji Hospital,Tongji Medical College,Huazhong University of Sciences and Technology,Wuhan,China华中科技大学同济医学院附属同济医院[2]Department of Dermatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China[3]Department of Clinical Laboratory,Tongji Hospital,Tongji Medical College,Huazhong University of Sciences and Technology,Wuhan,China检验科华中科技大学同济医学院附属同济医院[4]State Key Laboratory of Veterinary Biotechnology, Harbin Institute of Veterinary Medicine, Chinese Academy of Agricultural Sciences, Harbin, China
Uropathogenic Escherichia coli (UPEC), a Gram-negative bacterial pathogen, is a major causative agent of urinary tract infections (UTIs). However, the molecular mechanisms of how UPEC causes infections have not been determined. Recent studies indicated that certain enteric Gram-negative bacteria interact with and hijack innate immune receptors DC-SIGN (CD209a) and SIGNR1 (CD209b), often expressed by antigen-presenting cells (APCs), such as macrophages, leading to dissemination and infection. It was not known whether UPEC could utilize DC-SIGN receptors to promote its infection and dissemination similarly to the enteric pathogens. The results of this study reveal that UPEC interacts with CD209-expressing macrophages and transfectants. This interaction is inhibited by anti-CD209 antibody, indicating that CD209s are receptors for UPEC. Additionally, in contrast to the results of previous studies, mice lacking SIGNR1 are more susceptible to infection of this uropathogen, leading to prolonged bacterial persistence. Overall, the results of our study indicate that the innate immune receptor CD209s participate in the clearance of UPEC during UTIs.
基金:
National Natural
Science Foundation of China (NSFC 81271780 and 81471915)
and by two local grants from Tongji Hospital, Tongji Medical
College to Tie Chen.
第一作者单位:[1]Department of Clinical Immunology,Tongji Hospital,Tongji Medical College,Huazhong University of Sciences and Technology,Wuhan,China
共同第一作者:
通讯作者:
推荐引用方式(GB/T 7714):
Zhang Yingmiao,Zhang Song,He Yingxia,et al.Murine SIGNR1 (CD209b) Contributes to the Clearance of Uropathogenic Escherichia coli During Urinary Tract Infections[J].FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY.2020,9:doi:10.3389/fcimb.2019.00457.
APA:
Zhang, Yingmiao,Zhang, Song,He, Yingxia,Sun, Ziyong,Cai, Wentong...&Chen, Tie.(2020).Murine SIGNR1 (CD209b) Contributes to the Clearance of Uropathogenic Escherichia coli During Urinary Tract Infections.FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY,9,
MLA:
Zhang, Yingmiao,et al."Murine SIGNR1 (CD209b) Contributes to the Clearance of Uropathogenic Escherichia coli During Urinary Tract Infections".FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY 9.(2020)