HETEROGENEOUS RESPONSES OF RECOMBINANT HUMAN THYROTROPIN RECEPTOR TO IMMUNOGLOBULINS FROM PATIENTS WITH GRAVES-DISEASE

被引：21

作者：

ENDO, T

OHMORI, M

IKEDA, M

ANZAI, E

ONAYA, T

机构：

[1] Third Department of Internal Medicine, University of Yamanashi Medical School, Yamanashi, 409-38, Tamaho

来源：

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS | 1992年 / 186卷 / 03期

关键词：

D O I：

10.1016/S0006-291X(05)81560-8

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Non-thyroid mammalian cells, CHO-K1 cells, stably expressing human thyrotropin receptor (CHO-TSH-R cells) were used for the assay of thyroid stimulating antibody (TSAb) activities of IgGs from 24 patients with Graves' disease and we compared them with the values obtained in porcine thyroid cells. A significant positive correlation was observed between the results given by CHO-TSH-R cells (hTSAb) and porcine thyrocytes (pTSAb) (r=0.94, p< 0.001). However, we found that hTSAb values of IgGs from 5 patients were extremely different from their hTSAb values. Four out of these 5 IgGs showed strong pTSAb activity but exhibited a weak or negative hTSAb activity. Conversely, one out of 5 autoantibodies was very strong for hTSAb but its pTSAb was low. These heterogeneous responses of recombinant hTSH-R to Graves' IgGs suggest that there exist different types of TSAb and also that the epitope(s) for TSAb may be different from case to case. © 1992 Academic Press, Inc.

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页码：1391 / 1396

页数：6

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