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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Cech, T. R. Sullenger, B. A. Doudna, J. A. |
| Description | Author Affiliation: Doudna JA ( Department of Chemistry and Biochemistry, Howard Hughes Medical Institute, University of Colorado, Boulder 80309-0215.); |
| Abstract | Autoimmunity often involves the abnormal targeting of self-antigens by antibodies, leading to tissue destruction and other pathologies. This process could potentially be disrupted by small ligands that bind specifically to autoantibodies and inhibit their interaction with the target antigen. Here we report the identification of an RNA sequence that binds a mouse monoclonal antibody specific for an autoantigenic epitope of human insulin receptor. The RNA ligand binds specifically and with high affinity (apparent Kd congruent to 2 nM) to the anti-insulin receptor antibody and not to other mouse IgGs. The RNA can also act as a decoy, blocking the antibody from binding the insulin receptor. Thus, it probably binds near the combining site on the antibody. Strikingly, the RNA cross-reacts with autoantibodies from patients with extreme insulin resistance. One simple explanation is that the selected RNA may structurally mimic the antigenic epitope on the insulin receptor protein. These results suggest that decoy RNAs may be used in the treatment of autoimmune diseases. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 6 |
| Volume Number | 92 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1995-04-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Antibodies, Monoclonal Epitopes Insulin Resistance Immunology RNA Receptor, Insulin Animals Antibody Specificity Antigen-Antibody Complex Autoantigens Blood Mice Molecular Sequence Data Nucleic Acid Conformation Oligoribonucleotides Plasmids Chemistry Transcription, Genetic Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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