Characterization of T-Cell Responses to SMX and SMX-NO in Co-Trimoxazole Hypersensitivity Patients Expressing
Overview
Authors
Affiliations
-positive patients in Thailand can develop frequent co-trimoxazole hypersensitivity reactions. This study aimed to characterize drug-specific T cells from three co-trimoxazole hypersensitive patients presenting with either Stevens-Johnson syndrome or drug reaction with eosinophilia and systemic symptoms. Two of the patients carried the HLA allele of interest, namely . Sulfamethoxazole and nitroso sulfamethoxazole specific T cell clones were generated from T cell lines of co-trimoxazole hypersensitive -positive patients. Clones were characterized for antigen specificity and cross-reactivity with structurally related compounds by measuring proliferation and cytokine release. Surface marker expression was characterized flow cytometry. Mechanistic studies were conducted to assess pathways of T cell activation in response to antigen stimulation. Peripheral blood mononuclear cells from all patients were stimulated to proliferate and secrete IFN-γ with nitroso sulfamethoxazole. All sulfamethoxazole and nitroso sulfamethoxazole specific T cell clones expressed the CD4+ phenotype and strongly secreted IL-13 as well as IFN-γ, granzyme B and IL-22. No secretion of IL-17 was observed. A number of nitroso sulfamethoxazole-specific clones cross-reacted with nitroso dapsone but not sulfamethoxazole whereas sulfamethoxazole specific clones cross-reacted with nitroso sulfamethoxazole only. The nitroso sulfamethoxazole specific clones were activated in both antigen processing-dependent and -independent manner, while sulfamethoxazole activated T cell responses direct HLA binding. Furthermore, activation of nitroso sulfamethoxazole-specific, but not sulfamethoxazole-specific, clones was blocked with glutathione. Sulfamethoxazole and nitroso sulfamethoxazole specific T cell clones from hypersensitive patients were CD4+ which suggests that is not directly involved in the iatrogenic disease observed in co-trimoxazole hypersensitivity patients.
Konyana S, Teixeira N, Pirjol L, Thwala B, Nkoyane W, Porter M Front Allergy. 2024; 5:1481281.
PMID: 39668949 PMC: 11634803. DOI: 10.3389/falgy.2024.1481281.
Tabet Aoul A, Al-Nasseri A, Hall C, He C, Abernathy J Am J Case Rep. 2024; 25:e942982.
PMID: 38247161 PMC: 10812293. DOI: 10.12659/AJCR.942982.
A Comprehensive Review of Sulfonamide Hypersensitivity: Implications for Clinical Practice.
Serrano-Arias B, Araya-Zuniga A, Waterhouse-Garbanzo J, Rojas-Barrantes Z, Arguedas-Chacon S, Zavaleta-Monestel E Clin Rev Allergy Immunol. 2024; 65(3):433-442.
PMID: 38175321 DOI: 10.1007/s12016-023-08978-w.
Line J, Saville E, Meng X, Naisbitt D Front Toxicol. 2023; 5:1268107.
PMID: 37795379 PMC: 10546197. DOI: 10.3389/ftox.2023.1268107.
Genotypic and Phenotypic Characteristics of Co-Trimoxazole-Induced Cutaneous Adverse Reactions.
Iamsumang W, Chanprapaph K, Sukasem C, Satapornpong P, Thadanipon K, Suchonwanit P Dermatology. 2023; 239(6):966-975.
PMID: 37793359 PMC: 10711762. DOI: 10.1159/000534342.