Flow cytometry analysis with a new FITC-conjugated monoclonal antibody-3E12 for HLA-B*57:01 rapid screening in prevention of abacavir hypersensitivity in HIV-1-infected patients
| Autor: | J. L. Vicario, I. Martínez, L. Valor, F. Rodríguez-Alcántara, Simon Mallal, D. C. Hernández, M. Pascual-Bernaldez, Eduardo Fernández-Cruz, Javier Carbone, Carmen Rodríguez-Sainz, Juana Gil |
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| Rok vydání: | 2013 |
| Předmět: |
Time Factors
medicine.drug_class Anti-HIV Agents Human leukocyte antigen Monoclonal antibody Peripheral blood mononuclear cell Flow cytometry Drug Hypersensitivity Antigen Abacavir Medicine Humans Pharmacology (medical) False Positive Reactions Acquired Immunodeficiency Syndrome medicine.diagnostic_test biology business.industry Antibodies Monoclonal Flow Cytometry HLA-B Dideoxynucleosides Infectious Diseases HLA-B Antigens Immunology biology.protein HIV-1 Antibody business Fluorescein-5-isothiocyanate medicine.drug |
| Zdroj: | HIV clinical trials. 14(4) |
| ISSN: | 1528-4336 |
| Popis: | Background: Rapid screening for the detection of HLA-B*57:01 in the prevention of abacavir hypersensitivity in HIV-1-infected patients is a hallmark for clinical services. Objective: The aim of this work was to analyze the utility of flow cytometry with a new FITC-conjugated B-17 monoclonal antibody (mAb3E12) for HLA-B*57:01 screening in a Spanish cohort of 577 HIV-1+ individuals. Methods: Cryopreserved peripheral blood mononuclear cell samples from HIV-1+ individuals were analyzed by flow cytometry with the mAb 3E12 that recognizes both HLA-B*57 and HLA-B*58 alleles (members of the group specificity, HLA-B17). Patients' DNA samples had been previously typed for HLA-B*57:01 with PCR-SSO or PCR-SSP and additional DNA sequencing (EPI Study). The results obtained by flow cytometry were compared with the results obtained by the DNA-PCR techniques. Results: By flow cytometry, 46 samples (7.97%) were positive for HLA-B17, 530 (91.86%) were negative, and 1 (0.17%) was undetermined. All samples found negative by flow cytometry were negative for HLA-B*57:01 by DNA-PCR. Of the HLA-B17 positive samples, 31 (67.4%) were positive for HLA-B*57:01, 2 (3.25%) were positive for HLA-B*57:03, 11 (26.1%) were positive for HLA-B*58, and 2 (3.25%) were negative for both HLA-B*57 and HLA-B*58 antigens. The undetermined sample was negative for HLA-B*57 and HLA-B*58 alleles by DNA-PCR. Conclusions: This study shows that flow cytometry with mAb3E12 is a highly sensitive method (no false negatives) to implement prior to DNA-PCR analysis for rapid screening of HLA-B*57:01. Additional confirmation by molecular HLA typing method would be required in less than 10% of the cohort of HIV-1-infected individuals. |
| Databáze: | OpenAIRE |
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