T cell subset distribution and B cell hyperreactivity in mice expressing interleukin-4 under the control of major histocompatibility complex class I regulatory sequences.
Eur J Immunol 1994;
24:1143-7. [PMID:
7514131 DOI:
10.1002/eji.1830240520]
[Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Transgenic mice in which interleukin-4 (IL-4) is expressed under the control of the major histocompatibility complex (MHC) class I regulatory sequences show low level expression of IL-4 in all organs investigated. Several weeks after birth the animals develop thymus hypoplasia with a loss of CD4+CD8+ double-positive cells and a relative increase in the mature population, especially, and in contrast to previously published lines, the CD4+ single-positive cells. In the periphery, T lymphocytes eventually decline, CD8+ cells being more strongly affected. Many of the residual T cells exhibit the CD44highMel-14low phenotype of antigenically experienced T cells. B cells also show an activated phenotype with respect to size, MHC class II and CD23 expression, are more readily stimulated by anti-mu F(ab')2 antibodies than are B cells from control littermates, and show a higher spontaneous and antigen-induced production of IgG1 and IgE.
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