A Protein Epitope Targeted by the Antibody Response to Kawasaki Disease
| Autor: | Matthew Hackbart, Leah J. Gruen, Nancy Innocentini, Stanford T. Shulman, Tetyana Bodnar, Kwang-Youn Kim, Kristine M. Wylie, Susan C. Baker, David Arrollo, Yazmin E. Cruz-Pulido, Anne H. Rowley |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Male medicine.drug_class Mucocutaneous Lymph Node Syndrome Monoclonal antibody Inclusion bodies Epitope Serology Pathogenesis 03 medical and health sciences Epitopes Major Articles and Brief Reports 0302 clinical medicine Antigen Immunology and Allergy Medicine Humans 030212 general & internal medicine Blood Cells biology business.industry Antibodies Monoclonal Infant medicine.disease United States 030104 developmental biology Infectious Diseases Immunology Antibody Formation biology.protein Kawasaki disease Female Antibody business |
| Zdroj: | J Infect Dis |
| ISSN: | 1537-6613 |
| Popis: | Background Kawasaki disease (KD) is the leading cause of childhood acquired heart disease in developed nations and can result in coronary artery aneurysms and death. Clinical and epidemiologic features implicate an infectious cause but specific antigenic targets of the disease are unknown. Peripheral blood plasmablasts are normally highly clonally diverse but the antibodies they encode are approximately 70% antigen-specific 1–2 weeks after infection. Methods We isolated single peripheral blood plasmablasts from children with KD 1–3 weeks after onset and prepared 60 monoclonal antibodies (mAbs). We used the mAbs to identify their target antigens and assessed serologic response among KD patients and controls to specific antigen. Results Thirty-two mAbs from 9 of 11 patients recognize antigen within intracytoplasmic inclusion bodies in ciliated bronchial epithelial cells of fatal cases. Five of these mAbs, from 3 patients with coronary aneurysms, recognize a specific peptide, which blocks binding to inclusion bodies. Sera from 5/8 KD patients day ≥ 8 after illness onset, compared with 0/17 infant controls (P Conclusions These results identify a protein epitope targeted by the antibody response to KD and provide a means to elucidate the pathogenesis of this important worldwide pediatric problem. |
| Databáze: | OpenAIRE |
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