title: Differential virus replication, cytokine production, and antigen-presenting function by microglia from susceptible and resistant mice infected with Theiler's virus.
abstract: Infection with Theiler's murine encephalomyelitis virus (TMEV) in the central nervous system (CNS) causes an immune system-mediated demyelinating disease similar to human multiple sclerosis in susceptible but not resistant strains of mice. To understand the underlying mechanisms of differential susceptibility, we analyzed viral replication, cytokine production, and costimulatory molecule expression levels in microglia and macrophages in the CNS of virus-infected resistant C57BL/6 (B6) and susceptible SJL/J (SJL) mice. Our results indicated that message levels of TMEV, tumor necrosis factor alpha, beta interferon, and interleukin-6 were consistently higher in microglia from virus-infected SJL mice than in those from B6 mice. However, the levels of costimulatory molecule expression, as well as the ability to stimulate allogeneic T cells, were significantly lower in TMEV-infected SJL mice than in B6 mice. In addition, microglia from uninfected naïve mice displayed differential viral replication, T-cell stimulation, and cytokine production, similar to those of microglia from infected mice. These results strongly suggest that different levels of intrinsic susceptibility to TMEV infection, cytokine production, and T-cell activation ability by microglia contribute to the levels of viral persistence and antiviral T-cell responses in the CNS, which are critical for the differential susceptibility to TMEV-induced demyelinating disease between SJL and B6 mice.
authors: Department of Microbiology and Immunology, Northwestern University Feinberg Medical School, 303 E. Chicago Avenue, Chicago, IL 60611, USA.
authors: Young-Hee
authors: YH
authors: Jin
authors: Mani
authors: M
authors: Mohindru
authors: Min H
authors: MH
authors: Kang
authors: Alyson C
authors: AC
authors: Fuller
authors: Bongsu
authors: B
authors: Kang
authors: Daniel
authors: D
authors: Gallo
authors: Byung S
authors: BS
authors: Kim
mesh_terms: D000818:Animals; D017951:Antigen Presentation; D002460:Cell Line; D006224:Cricetinae; D016207:Cytokines / Q000378:metabolism; D007963:Leukocytes, Mononuclear / Q000378:metabolism / Q000821:virology; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D017628:Microglia / Q000378:metabolism*; D010455:Peptides / Q000737:chemistry; D013601:T-Lymphocytes / Q000378:metabolism / Q000821:virology; D017945:Theilovirus / Q000378:metabolism*; D013997:Time Factors; D014779:Virus Replication
chemical_list: D016207:Cytokines; D010455:Peptides
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