Lymphocytic choriomeningitis virus (LCMV) infection of CNS glial cells results in TLR2-MyD88/Mal-dependent inflammatory responses

Student Author(s)

Ermelinda Porpiglia

UMMS Affiliation

Department of Medicine, Division of Infectious Diseases and Immunology; Department of Pediatrics; Department of Cancer Biology

Publication Date


Document Type



Cancer Biology | Immunology and Infectious Disease | Life Sciences | Medicine and Health Sciences


In response to invading pathogens, Toll-like receptors (TLR) play a critical role in the initiation of the innate immune response, which can be either beneficial or detrimental to the host. In the present study, we demonstrated that central nervous system (CNS) glial cells are activated by Lymphocytic Choriomeningitis Virus (LCMV) in a TLR2-MyD88/Mal-dependent manner. Specifically, in response to LCMV, both astrocytes and microglial cells isolated from wild-type (WT) mice produced chemokines, such as MCP-1, RANTES and TNF-alpha. Similar responses occurred in TLR3 KO and TLR4 KO glial cells. In striking contrast, both astrocytes and microglial cells isolated from mice deficient in TLR2, MyD88, and Mal did not produce any of these chemokines. In addition, LCMV infection of glial cells induced up-regulation of TLR2, MHC class-I and II, CD40, CD86 in a MyD88-dependent manner. These results define a functional role for TLR signaling in viral infection-induced activation of CNS glial cells as well as for the immunopathology in the CNS.

DOI of Published Version



J Neuroimmunol. 2008 Feb;194(1-2):70-82. Link to article on publisher's site

Journal/Book/Conference Title

Journal of neuroimmunology

Related Resources

Link to Article in PubMed

PubMed ID