Localization of spontaneously hyperactive B cells of NZB mice to a specific B cell subset

P. B. Nakajima, S. K. Datta, R. S. Schwartz, B. T. Huber

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30 Scopus citations

Abstract

NZB mice produce numerous autoantibodies and have a subpopulation of B cells characterized by marked spontaneous hypersecretion of IgM. The latter trait is determined by autosomal genes in F1 hybrids of NZB and normal strains. We tested the hypothesis that the hypersecreting B cells of NZB mice are contained within a specific subpopulation by examining (CBA/N x NZB)F1 hybrids. CBA/N mice have an X-linked recessive defect that results in the absence of a functionally distinct B cell subpopulation and impaired antibody responses. The hyperactivity of B cells, characteristic of the NZB parent, was transimitted to the F1 female, but was not expressed by the F1 male, which manifested the CBA/N B cell hyporesponsiveness. By contrast, the NZB xenotropic virus was expressed equally by both male and female F1 mice. We conclude that the NZB B cell abnormality resides within the B cell subpopulation affected by the CBA/N mutation.

Original languageEnglish (US)
Pages (from-to)4613-4616
Number of pages4
JournalProceedings of the National Academy of Sciences of the United States of America
Volume76
Issue number9
DOIs
StatePublished - Jan 1 1979

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