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Article
Dengue virus infection induces broadly cross-reactive human IgM antibodies that recognize intact virions in humanized BLT-NSG mice.
Faculty Research 2015
  • Smita Jaiswal
  • Kenneth Smith
  • Alejandro Ramirez
  • Marcia Woda
  • Pamela Pazoles
  • Leonard D Shultz, The Jackson Laboratory
  • Dale L Greiner
  • Michael A Brehm
  • Anuja Mathew
Document Type
Peer Reviewed Articles
Publication Date
1-1-2015
JAX Source
Exp Biol Med (Maywood) 2015 Jan; 240(1):67-78.
Abstract

The development of small animal models that elicit human immune responses to dengue virus (DENV) is important since prior immunity is a major risk factor for developing severe dengue disease. This study evaluated anti-DENV human antibody (hAb) responses generated from immortalized B cells after DENV-2 infection in NOD-scid IL2rγ(null) mice that were co-transplanted with human fetal thymus and liver tissues (BLT-NSG mice). DENV-specific human antibodies predominantly of the IgM isotype were isolated during acute infection and in convalescence. We found that while a few hAbs recognized the envelope protein produced as a soluble recombinant, a number of hAbs only recognized epitopes on intact virions. The majority of the hAbs isolated during acute infection and in immune mice were serotype-cross-reactive and poorly neutralizing. Viral titers in immune BLT-NSG mice were significantly decreased after challenge with a clinical strain of dengue. DENV-specific hAbs generated in BLT-NSG mice share some of the characteristics of Abs isolated in humans with natural infection. Humanized BLT-NSG mice provide an attractive preclinical platform to assess the immunogenicity of candidate dengue vaccines. Exp Biol Med (Maywood) 2015 Jan; 240(1):67-78.

Citation Information
Smita Jaiswal, Kenneth Smith, Alejandro Ramirez, Marcia Woda, et al.. "Dengue virus infection induces broadly cross-reactive human IgM antibodies that recognize intact virions in humanized BLT-NSG mice." (2015)
Available at: http://works.bepress.com/alejandro_ramirez/43/