Abstract | INTRODUCTION: Immunodeficient mice engrafted with human immune systems support studies of human hematopoiesis and the immune response to human-specific pathogens. A significant limitation of these humanized mouse models is, however, a severely restricted ability of human B cells to undergo class switching and produce antigen-specific IgG after infection or immunization. METHODS: In this study, we have characterized the development and function of human B cells in NOD-scid IL2Rγnull (NSG) mice transgenically expressing human stem cell factor (SCF), granulocyte macrophage colony-stimulating factor ( GM-CSF), and IL-3 (NSG-SGM3) following engraftment with human hematopoietic stem cells, autologous fetal liver, and thymic tissues (bone marrow, liver, thymus or BLT model). The NSG-SGM3 BLT mice engraft rapidly with human immune cells and develop T cells, B cells, and myeloid cells. RESULTS: A higher proportion of human B cells developing in NSG-SGM3 BLT mice had a mature/naive phenotype with a corresponding decrease in immature/transitional human B cells as compared to NSG BLT mice. In addition, NSG-SGM3 BLT mice have higher basal levels of human IgM and IgG as compared with NSG BLT mice. Moreover, dengue virus infection of NSG-SGM3 BLT mice generated higher levels of antigen-specific IgM and IgG, a result not observed in NSG BLT mice. CONCLUSIONS: Our studies suggest that NSG-SGM3 BLT mice show improved human B cell development and permit the generation of antigen-specific antibody responses to viral infection.
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Authors | Sonal Jangalwe, Leonard D Shultz, Anuja Mathew, Michael A Brehm |
Journal | Immunity, inflammation and disease
(Immun Inflamm Dis)
Vol. 4
Issue 4
Pg. 427-440
(12 2016)
ISSN: 2050-4527 [Print] England |
PMID | 27980777
(Publication Type: Journal Article, Research Support, N.I.H., Extramural)
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Chemical References |
- Interleukin-3
- Stem Cell Factor
- Granulocyte-Macrophage Colony-Stimulating Factor
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Topics |
- Animals
- B-Lymphocytes
(cytology, immunology)
- Granulocyte-Macrophage Colony-Stimulating Factor
(metabolism)
- Humans
- Interleukin-3
(metabolism)
- Mice
- Mice, Inbred NOD
- Mice, Transgenic
- Stem Cell Factor
(metabolism)
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