Complement Suppresses the Initial Type 1 Interferon Response to Ocular Herpes Simplex Virus Type 1 Infection in Mice

被引:0
作者
Carr, Daniel J. J. [1 ,2 ]
Filiberti, Adrian [2 ]
Gmyrek, Grzegorz B. [2 ]
机构
[1] Univ Oklahoma, Hlth Sci Ctr, Dept Ophthalmol Microbiol & Immunol, Oklahoma City, OK 73104 USA
[2] Univ Oklahoma, Hlth Sci Ctr, Dept Ophthalmol, Oklahoma City, OK 73104 USA
来源
PATHOGENS | 2024年 / 13卷 / 01期
关键词
complement; herpes simplex virus type 1; cornea; cytokines; chemokines; interferon; leukocytes; ocular infection; CORNEAL NERVE DEGENERATION; PROTECTS MICE; HSV-1; INFECTION; I INTERFERON; IFN-GAMMA; CELLS; RESISTANCE; ALPHA; ACTIVATION; EXPRESSION;
D O I
10.3390/pathogens13010074
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The complement system (CS) contributes to the initial containment of viral and bacterial pathogens and clearance of dying cells in circulation. We previously reported mice deficient in complement component 3 (C3KO mice) were more sensitive than wild-type (WT) mice to ocular HSV-1 infection, as measured by a reduction in cumulative survival and elevated viral titers in the nervous system but not the cornea between days three and seven post infection (pi). The present study was undertaken to determine if complement deficiency impacted virus replication and associated changes in inflammation at earlier time points in the cornea. C3KO mice were found to possess significantly (p < 0.05) less infectious virus in the cornea at 24 h pi that corresponded with a decrease in HSV-1 lytic gene expression at 12 and 24 h pi compared to WT animals. Flow cytometry acquisition found no differences in the myeloid cell populations residing in the cornea including total macrophage and neutrophil populations at 24 h pi with minimal infiltrating cell populations detected at the 12 h pi time point. Analysis of cytokine and chemokine content in the cornea measured at 12 and 24 h pi revealed that only CCL3 (MIP-1 alpha) was found to be different between WT and C3KO mice with >2-fold increased levels (p < 0.05, ANOVA and Tukey's post hoc t-test) in the cornea of WT mice at 12 h pi. C3KO mouse resistance to HSV-1 infection at the early time points correlated with a significant increase in type I interferon (IFN) gene expression including IFN-alpha 1 and IFN-beta and downstream effector genes including tetherin and RNase L (p < 0.05, Mann-Whitney rank order test). These results suggest early activation of the CS interferes with the induction of the type I IFN response and leads to a transient increase in virus replication following corneal HSV-1 infection.
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页数:13
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