At least three distinct B cell epitopes reside in the C‐terminal half of La protein, as determined by a recombinant DNA approach
At least three distinct B cell epitopes reside in the C‐terminal half of La protein, as determined by a recombinant DNA approach
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通过重组 DNA 方法确定,La 蛋白的 C 端一半存在至少三个不同的 B 细胞表位
DOI:
--
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发表时间:
1988
影响因子:
5.4
通讯作者:
R. Lührmann
中科院分区:
文献类型:
--
作者:
A. Rauh;H. Hornig;R. Lührmann
The La antigen is a nuclear protein that is one of the major target antigens of autoantibodies found in the sera of patients with primary Sjögren's syndrome. The formation of such autoantibodies is therefore likely to reflect the basic immunopathogenesis of this disorder. A recombinant DNA strategy has been used to examine the La protein for sequences that encode autoimmunizing B cell epitopes. We have isolated and characterized a 1.2‐kb‐long cDNA from a human liver cDNA library encoding a region of the La protein; this region contains 296 amino acids, including the C terminus. A sub‐library of recombinant DNA in the expression vector pEX was made from portions of the La cDNA. Individual fusion proteins were tested by immunoblotting and enzyme‐linked immunosorbent assay for their ability to react with anti‐La autoantibodies contained in sera from patients with Sjögren's syndrome. In this way, we have identified at least three distinct epitopes in the C‐terminal half of the La protein. Every anti‐La serum tested contained antibodies against all three of the antigenic regions identified. Furthermore, most of the sera display similar ratios between the titers of antibodies with the three kinds of specificity. Our data suggest that the production of anti‐La autoantibodies may be antigen driven.
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DOI:
10.1016/0090-1229(86)90128-5
发表时间:
1986
期刊:
Clinical immunology and immunopathology
影响因子:
--
作者:
Pearce,DC;Yount,WJ;Eisenberg,RA
通讯作者:
Eisenberg,RA
DOI:
10.1073/pnas.78.2.805
发表时间:
1981-01-01
期刊:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子:
--
作者:
LERNER, MR;ANDREWS, NC;STEITZ, JA
通讯作者:
STEITZ, JA
DOI:
--
发表时间:
1982
期刊:
Current topics in cellular regulation
影响因子:
--
作者:
Hathaway,GM;Traugh,JA
通讯作者:
Traugh,JA
DOI:
--
发表时间:
1983
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Reddy,R;Henning,D;Tan,E;Busch,H
通讯作者:
Busch,H
DOI:
--
发表时间:
1983
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Hashimoto,C;Steitz,JA
通讯作者:
Steitz,JA