We describe a case of lymphocytic choriomeningitis virus (LCMV) meningitis in a New York, NY, resident who had no apparent risk factors. Clues leading to the diagnosis included aseptic meningitis during winter and the finding of hypoglycorrachia and lymphocytosis in the cerebrospinal fluid. LCMV continues to be an underdiagnosed zoonotic disease.
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http://dx.doi.org/10.3201/eid1602.091347 | DOI Listing |
Vaccines (Basel)
December 2024
Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN 55108, USA.
Background: Live viral vector-based vaccines are known to elicit strong immune responses, but their use can be limited by anti-vector immunity. Here, we analyzed the immunological responses of a live-attenuated recombinant Pichinde virus (PICV) vector platform (rP18tri).
Methods: To evaluate anti-PICV immunity in the development of vaccine antigen-specific immune responses, we generated a rP18tri-based vaccine expressing the lymphocytic choriomeningitis virus (LCMV) nucleoprotein (NP) and administered four doses of this rP18tri-NPLCMV vaccine to mice.
BMC Vet Res
January 2025
Laboratory of Pathogen Microbiology and Immunology, College of Life Science, Jilin Agricultural University, Changchun, Jilin Province, China.
Background: Lymphocytic choriomeningitis virus (LCMV) is a zoonotic pathogen primarily transmitted by rodents. Recently, LCMV has been detected in ticks from northeastern China; however, the pathogenicity of this virus in murine models remains to be elucidated.
Results: Here, we examined the tick-derived LCMV strain JX14 by inoculating BALB/c mice with 3.
Research (Wash D C)
January 2025
Department of Cardiology of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
Protein phosphatase 2A (PP2A) is one of the most abundant serine/threonine phosphatases and plays critical roles in regulating cell fate and function. We previously showed that PP2A regulates the differentiation of CD4 T cells and the development of thymocytes. Nevertheless, its role in CD8 T cells remains elusive.
View Article and Find Full Text PDFFront Immunol
December 2024
Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
The functional specialization of CD4 T lymphocytes into various subtypes, including T1 and T cells, is crucial for effective immune responses. T cells facilitate B cell differentiation within germinal centers, while T1 cells are vital for cell-mediated immunity against intracellular pathogens. Integrin α4, a cell surface adhesion molecule, plays significant roles in cell migration and co-stimulatory signaling.
View Article and Find Full Text PDFImmunity
December 2024
Department of Biomedicine, University of Basel, 4009 Basel, Switzerland. Electronic address:
To interrogate the role of specific immune cells in infection, cancer, and autoimmunity, immunologists commonly use monoclonal depletion antibodies (depletion-mAbs) or genetically engineered mouse models (GEMMs). To generate a tool that combines specific advantages and avoids select drawbacks of the two methods, we engineered adeno-associated viral vectors expressing depletion mAbs (depletion-AAVs). Single-dose depletion-AAV administration durably eliminated lymphocyte subsets in mice and avoided accessory deficiencies of GEMMs, such as marginal zone defects in B cell-deficient animals.
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