DOMINANT LOW RESPONSIVENESS IN THE IGG RESPONSE OF MICE TO THE COMPLEX PROTEIN ANTIGEN TYPE-1 FIMBRIAE FROM ACTINOMYCES-VISCOSUS T14V

被引:0
作者
HABER, J [1 ]
PARADIS, G [1 ]
GRINNELL, CM [1 ]
机构
[1] TUFTS UNIV,SCH DENT MED,DEPT ORAL PATHOL,BOSTON,MA 02111
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D O I
暂无
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Type 1 fimbriae from Actinomyces viscosus T14V, composed of a complex protein of M(r) 65,000, mediate the adherence of A. viscosus T14V to the host, whereas type 1 fimbriae-specific antibodies inhibit adherence. Genetic control of the serum IgG response to type 1 fimbriae was evaluated in a series of inbred, hybrid, recombinant inbred, and backcross mice. Mice were given i.p. injections of 10(8) A. viscosus T14V cells in saline on days 0 and 14, and IgG anti-type 1 fimbriae in sera obtained on day 26 were measured by ELISA. Segregation analysis of the responses of (BALB/cJ x A/J)F1 x A/J backcross mice suggested polygenic control. Linkage analysis in (BALB/cJ x A/J)F1 x A/J backcross and SWXL recombinant inbred mice suggested control by genes linked with H-2 and with Ly-17 and Akp-1. In several F1 hybrid strains derived from H-2-disparate high and low responder parental strains, low responsiveness was dominant. The F1 derived from the H-2-identical high and low responder strains CBA/J and C3H/HeJ was a low responder, suggesting that dominant low responsiveness was mediated by non-H-2-linked genes. A three-gene model is proposed for regulation of the type 1 fimbriae response, including an MHC-linked gene, a gene linked with Ly-17 and Akp-1 on the telomeric portion of chromosome 1, and a background gene whose linkage is unknown.
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页码:1949 / 1954
页数:6
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