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Kazaoka A, Fujimori S, Yamada Y, Shirayanagi T, Gao Y, Kuwahara S, Sakamoto N, Susukida T, Aoki S, Ito K. HLA-B*57:01-dependent intracellular stress in keratinocytes triggers dermal hypersensitivity reactions to abacavir. PNAS NEXUS 2024; 3:pgae140. [PMID: 38628599 PMCID: PMC11018537 DOI: 10.1093/pnasnexus/pgae140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 03/26/2024] [Indexed: 04/19/2024]
Abstract
Specific human leukocyte antigen (HLA) polymorphisms combined with certain drug administration strongly correlate with skin eruption. Abacavir hypersensitivity (AHS), which is strongly associated with HLA-B*57:01, is one of the most representative examples. Conventionally, HLA transmits immunological signals via interactions with T cell receptors on the cell surface. This study focused on HLA-mediated intracellular reactions in keratinocytes that might determine the onset of skin immunotoxicity by drug treatments. Abacavir exposure resulted in keratinocytes expressing HLA-B*57:01 exhibiting endoplasmic reticulum (ER) stress responses, such as immediate calcium release into the cytosol and enhanced HSP70 expression. In contrast, keratinocytes expressing HLA-B*57:03 (closely related to HLA-B*57:01) did not show these changes. This indicated that HLA-B*57:01 has a specific intracellular response to abacavir in keratinocytes in the absence of lymphocytes. Furthermore, abacavir exposure in HLA-B*57:01-expressing keratinocytes elevated the expression of cytokines/chemokines such as interferon-γ, interleukin-1β, and CCL27, and induced T lymphoblast migration. These effects were suppressed by ER stress relief using 4-phenylbutyrate (4-PB). HLA-B*57:01-transgenic mice also exhibited ER stress in epidermal areas following abacavir administration, and abacavir-induced skin toxicity was attenuated by the administration of 4-PB. Moreover, abacavir bound to HLA-B*57:01 within cells and its exposure led to HLA-B*57:01 protein aggregation and interaction with molecular chaperones in the ER of keratinocytes. Our results underscore the importance of HLA-mediated intracellular stress responses in understanding the onset of HLA-B*57:01-mediated AHS. We provide the possibility that the intracellular behavior of HLA is crucial for determining the onset of drug eruptions.
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Affiliation(s)
- Akira Kazaoka
- Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Sota Fujimori
- Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Yushiro Yamada
- Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Tomohiro Shirayanagi
- Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Yuying Gao
- Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Saki Kuwahara
- Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Naoki Sakamoto
- Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Takeshi Susukida
- Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
- Laboratory of Cancer Biology and Immunology, Section of Host Defences, Institute of Natural Medicine, University of Toyama, Toyama 930-0194, Japan
| | - Shigeki Aoki
- Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Kousei Ito
- Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
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2
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Thomson P, Fragkas N, Kafu LM, Aithal GP, Lucena MI, Terracciano L, Meng X, Pirmohamed M, Brees D, Kullak‐Ublick GA, Odermatt A, Hammond T, Kammüller M, Naisbitt DJ. Patients with naproxen-induced liver injury display T-cell memory responses toward an oxidative (S)-O-desmethyl naproxen metabolite but not the acyl glucuronide. Allergy 2024; 79:200-214. [PMID: 37515456 PMCID: PMC10952231 DOI: 10.1111/all.15830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/30/2023] [Accepted: 06/13/2023] [Indexed: 07/30/2023]
Abstract
BACKGROUND Exposure to nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen (IBU) and naproxen (NAP) is associated with idiosyncratic drug-induced liver injury (DILI). Carboxylate bioactivation into reactive metabolites (e.g., acyl glucuronides, AG) and resulting T-cell activation is hypothesized as causal for this adverse event. However, conclusive evidence supporting this is lacking. METHODS In this work, we identify CD4+ and CD8+ T-cell hepatic infiltration in a biopsy from an IBU DILI patient. Lymphocyte transformation test and IFN-γ ELIspot, conducted on peripheral blood mononuclear cells (PBMCs) of patients with NAP-DILI, were used to explore drug-specific T-cell activation. T-cell clones (TCC) were generated and tested for drug specificity, phenotype/function, and pathways of T-cell activation. Cells were exposed to NAP, its oxidative metabolite 6-O-desmethyl NAP (DM-NAP), its AG or synthesized NAP-AG human-serum albumin adducts (NAP-AG adduct). RESULTS CD4+ and CD8+ T-cells from patients expressing a range of different Vβ receptors were stimulated to proliferate and secrete IFN-γ and IL-22 when exposed to DM-NAP, but not NAP, NAP-AG or the NAP-AG adduct. Activation of the CD4+ TCC was HLA-DQ-restricted and dependent on antigen presenting cells (APC); most TCC were activated with DM-NAP-pulsed APC, while fixation of APC blocked the T-cell response. Cross-reactivity was not observed with structurally-related drugs. CONCLUSION Our results confirm hepatic T-cell infiltrations in NSAID-induced DILI, and show a T-cell memory response toward DM-NAP indicating an immune-mediated basis for the adverse event. Whilst bioactivation at the carboxylate group is widely hypothesized to be pathogenic for NSAID associated DILI, we found no evidence of this with NAP.
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Affiliation(s)
- Paul Thomson
- Molecular& Clinical PharmacologyUniversity of LiverpoolLiverpoolUK
| | - Nik Fragkas
- Novartis Institutes for BioMedical ResearchBaselSwitzerland
| | - Laila M. Kafu
- Molecular& Clinical PharmacologyUniversity of LiverpoolLiverpoolUK
| | - Guruprasad P. Aithal
- NIHR Nottingham Biomedical Research Centre and Nottingham Digestive Diseases Centre, Translational Medical Sciences, West Block, Queen's Medical CentreUniversity of NottinghamNottinghamUK
| | - M. Isabel Lucena
- Unidad de Gestión Clínica de Aparato Digestivo y Servicio de Farmacología Clínica, Instituto de Investigación Biomédica de Málaga‐IBIMA, Hospital Universitario Virgen de la VictoriaUniversidad de Málaga, CIBERehdMalagaSpain
| | | | - Xiaoli Meng
- Molecular& Clinical PharmacologyUniversity of LiverpoolLiverpoolUK
| | - Munir Pirmohamed
- Molecular& Clinical PharmacologyUniversity of LiverpoolLiverpoolUK
| | | | - Gerd A. Kullak‐Ublick
- University Hospital ZurichUniversity of ZurichZurichSwitzerland
- Novartis Global Drug DevelopmentBaselSwitzerland
| | - Alex Odermatt
- Division of Molecular & Systems Toxicology, Department of Pharmaceutical SciencesUniversity of BaselBaselSwitzerland
| | - Thomas Hammond
- Division of Molecular & Systems Toxicology, Department of Pharmaceutical SciencesUniversity of BaselBaselSwitzerland
- Oncology Safety, Clinical Pharmacology and Safety Sciences R&DCambridgeUK
| | | | - Dean J. Naisbitt
- Molecular& Clinical PharmacologyUniversity of LiverpoolLiverpoolUK
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3
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Mifsud NA, Illing PT, Ho R, Tuomisto JE, Fettke H, Mullan KA, McCluskey J, Rossjohn J, Vivian J, Reantragoon R, Purcell AW. The allopurinol metabolite, oxypurinol, drives oligoclonal expansions of drug-reactive T cells in resolved hypersensitivity cases and drug-naïve healthy donors. Allergy 2023; 78:2980-2993. [PMID: 37452515 PMCID: PMC10952278 DOI: 10.1111/all.15814] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/07/2023] [Accepted: 06/10/2023] [Indexed: 07/18/2023]
Abstract
Allopurinol (ALP) is a successful drug used in the treatment of gout. However, this drug has been implicated in hypersensitivity reactions that can cause severe to life-threatening reactions such as Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN). Individuals who carry the human leukocyte antigen (HLA)-B*58:01 allotype are at higher risk of experiencing a hypersensitivity reaction (odds ratios ranging from 5.62 to 580.3 for mild to severe reactions, respectively). In addition to the parent drug, the metabolite oxypurinol (OXP) is implicated in triggering T cell-mediated immunopathology via a labile interaction with HLA-B*58:01. To date, there has been limited information regarding the T-cell receptor (TCR) repertoire usage of reactive T cells in patients with ALP-induced SJS or TEN and, in particular, there are no reports examining paired αβTCRs. Here, using in vitro drug-treated PBMCs isolated from both resolved ALP-induced SJS/TEN cases and drug-naïve healthy donors, we show that OXP is the driver of CD8+ T cell-mediated responses and that drug-exposed memory T cells can exhibit a proinflammatory immunophenotype similar to T cells described during active disease. Furthermore, this response supported the pharmacological interaction with immune receptors (p-i) concept by showcasing (i) the labile metabolite interaction with peptide/HLA complexes, (ii) immunogenic complex formation at the cell surface, and (iii) lack of requirement for antigen processing to elicit drug-induced T cell responsiveness. Examination of paired OXP-induced αβTCR repertoires highlighted an oligoclonal and private clonotypic profile in both resolved ALP-induced SJS/TEN cases and drug-naïve healthy donors.
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Affiliation(s)
- Nicole A. Mifsud
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery InstituteMonash UniversityClaytonVictoriaAustralia
| | - Patricia T. Illing
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery InstituteMonash UniversityClaytonVictoriaAustralia
| | - Rebecca Ho
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery InstituteMonash UniversityClaytonVictoriaAustralia
| | - Johanna E. Tuomisto
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery InstituteMonash UniversityClaytonVictoriaAustralia
| | - Heidi Fettke
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery InstituteMonash UniversityClaytonVictoriaAustralia
- Present address:
Cancer Research, Peter MacCallum Cancer CentreMelbourneVictoriaAustralia
- Present address:
Sir Peter MacCallum Department of OncologyUniversity of MelbourneMelbourneVictoriaAustralia
| | - Kerry A. Mullan
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery InstituteMonash UniversityClaytonVictoriaAustralia
- Present address:
ADREM Data Lab, Department of Computer ScienceUniversity of AntwerpAntwerpBelgium
| | - James McCluskey
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and ImmunityUniversity of MelbourneParkvilleVictoriaAustralia
| | - Jamie Rossjohn
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery InstituteMonash UniversityClaytonVictoriaAustralia
- Institute of Infection and ImmunityCardiff University School of MedicineCardiffUK
| | - Julian Vivian
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery InstituteMonash UniversityClaytonVictoriaAustralia
- Present address:
St. Vincent's Institute of Medical ResearchFitzroyVictoriaAustralia
- Present address:
Department of MedicineThe University of MelbourneMelbourneVictoriaAustralia
| | - Rangsima Reantragoon
- Immunology Division, Department of Microbiology, Department of MicrobiologyChulalongkorn UniversityBangkokThailand
- Center of Excellence in Immunology and Immune‐mediated Disease, Faculty of MedicineChulalongkorn UniversityBangkokThailand
| | - Anthony W. Purcell
- Infection and Immunity Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery InstituteMonash UniversityClaytonVictoriaAustralia
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Bigelow RA, Richeson JT, McClurg M, Valeris-Chacin R, Morley PS, Funk JL, Scott MA. Characterizing the influence of various antimicrobials used for metaphylaxis against bovine respiratory disease on host transcriptome responses. Front Vet Sci 2023; 10:1272940. [PMID: 37869487 PMCID: PMC10585045 DOI: 10.3389/fvets.2023.1272940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 09/20/2023] [Indexed: 10/24/2023] Open
Abstract
Currently, control against bovine respiratory disease (BRD) primarily consists of mass administration of an antimicrobial upon arrival to facility, termed "metaphylaxis." The objective of this study was to determine the influence of six different antimicrobials used as metaphylaxis on the whole blood host transcriptome in healthy steers upon and following arrival to the feedlot. One hundred and five steers were stratified by arrival body weight (BW = 247 ± 28 kg) and randomly and equally allocated to one of seven treatments: negative control (NC), ceftiofur (CEFT), enrofloxacin (ENRO), florfenicol (FLOR), oxytetracycline (OXYT), tildipirosin (TILD), or tulathromycin (TULA). On day 0, whole blood samples and BW were collected prior to a one-time administration of the assigned antimicrobial. Blood samples were collected again on days 3, 7, 14, 21, and 56. A subset of cattle (n = 6) per treatment group were selected randomly for RNA sequencing across all time points. Isolated RNA was sequenced (NovaSeq 6,000; ~35 M paired-end reads/sample), where sequenced reads were processed with ARS-UCD1.3 reference-guided assembly (HISAT2/StringTie2). Differential expression analysis comparing treatment groups to NC was performed with glmmSeq (FDR ≤ 0.05) and edgeR (FDR ≤ 0.1). Functional enrichment was performed with KOBAS-i (FDR ≤ 0.05). When compared only to NC, unique differentially expressed genes (DEGs) found within both edgeR and glmmSeq were identified for CEFT (n = 526), ENRO (n = 340), FLOR (n = 56), OXYT (n = 111), TILD (n = 3,001), and TULA (n = 87). At day 3, CEFT, TILD, and OXYT shared multiple functional enrichment pathways related to T-cell receptor signaling and FcεRI-mediated NF-kappa beta (kB) activation. On day 7, Class I major histocompatibility complex (MHC)-mediated antigen presentation pathways were enriched in ENRO and CEFT groups, and CEFT and FLOR had DEGs that affected IL-17 signaling pathways. There were no shared pathways or Gene Ontology (GO) terms among treatments at day 14, but TULA had 19 pathways and eight GO terms enriched related to NF- κβ activation, and interleukin/interferon signaling. Pathways related to cytokine signaling were enriched by TILD on day 21. Our research demonstrates immunomodulation and potential secondary therapeutic mechanisms induced by antimicrobials commonly used for metaphylaxis, providing insight into the beneficial anti-inflammatory properties antimicrobials possess.
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Affiliation(s)
- Rebecca A. Bigelow
- Department of Agricultural Sciences, West Texas A&M University, Canyon, TX, United States
| | - John T. Richeson
- Department of Agricultural Sciences, West Texas A&M University, Canyon, TX, United States
| | - Molly McClurg
- Veterinary, Education, Research, and Outreach Program, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, Canyon, TX, United States
| | - Robert Valeris-Chacin
- Veterinary, Education, Research, and Outreach Program, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, Canyon, TX, United States
| | - Paul S. Morley
- Veterinary, Education, Research, and Outreach Program, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, Canyon, TX, United States
| | - Jenna L. Funk
- Veterinary, Education, Research, and Outreach Program, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, Canyon, TX, United States
| | - Matthew A. Scott
- Veterinary, Education, Research, and Outreach Program, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, Canyon, TX, United States
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Chen CB, Hung WK, Wang CW, Lee CC, Hung SI, Chung WH. Advances in understanding of the pathogenesis and therapeutic implications of drug reaction with eosinophilia and systemic symptoms: an updated review. Front Med (Lausanne) 2023; 10:1187937. [PMID: 37457584 PMCID: PMC10338933 DOI: 10.3389/fmed.2023.1187937] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 06/05/2023] [Indexed: 07/18/2023] Open
Abstract
Drug reaction with eosinophilia and systemic symptoms or drug-induced hypersensitivity syndrome (DRESS/DIHS) is one type of severe cutaneous adverse reaction (SCAR). It is featured by fever, widespread skin lesions, protracted clinical course, internal organ involvement, and possibly long-term autoimmune sequelae. The presence of high-risk human leukocyte antigen (HLA) alleles, hypersensitivity reaction after culprit drug ingestion, and human herpesvirus reactivation may all contribute to its complex clinical manifestations. Some recent studies focusing on the roles of involved cytokines/chemokines and T cells co-signaling pathways in DRESS/DIHS were conducted. In addition, some predictors of disease severity and prognosis were also reported. In this review, we provided an update on the current understanding of the pathogenesis, potential biomarkers, and the relevant therapeutic rationales of DRESS/DIHS.
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Affiliation(s)
- Chun-Bing Chen
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Department of Medical Research, Chang Gung Memorial Hospital, Linkou, Taiwan
- Chang Gung Immunology Consortium, Chang Gung Memorial Hospital and Chang Gung University, Taoyuan, Taiwan
- Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen, China
- Xiamen Chang Gung Allergology Consortium, Xiamen Chang Gung Hospital, Xiamen, China
- School of Medicine, National Tsing Hua University, Hsinchu, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Wei-Kai Hung
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Department of Medical Research, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Chuang-Wei Wang
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Department of Medical Research, Chang Gung Memorial Hospital, Linkou, Taiwan
- Chang Gung Immunology Consortium, Chang Gung Memorial Hospital and Chang Gung University, Taoyuan, Taiwan
- Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen, China
- Xiamen Chang Gung Allergology Consortium, Xiamen Chang Gung Hospital, Xiamen, China
| | - Chih-Chun Lee
- Department of Medical Education, Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Shuen-Iu Hung
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Department of Medical Research, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Wen-Hung Chung
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Department of Medical Research, Chang Gung Memorial Hospital, Linkou, Taiwan
- Chang Gung Immunology Consortium, Chang Gung Memorial Hospital and Chang Gung University, Taoyuan, Taiwan
- Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen, China
- Xiamen Chang Gung Allergology Consortium, Xiamen Chang Gung Hospital, Xiamen, China
- College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou, Taiwan
- Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan
- Department of Dermatology, Beijing Tsinghua Chang Gung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
- Department of Dermatology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Genomic Medicine Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taiwan
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6
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Di Filippo P, Venanzi A, Ciarelli F, Panetti B, Di Pillo S, Chiarelli F, Attanasi M. Drug-Induced Enterocolitis Syndrome in Children. Int J Mol Sci 2023; 24:ijms24097880. [PMID: 37175584 PMCID: PMC10178722 DOI: 10.3390/ijms24097880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/16/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
Drug-Induced Enterocolitis Syndrome (DIES) is a drug-induced hypersensitivity reaction non-IgE mediated involving the gastrointestinal system that occurs 2 to 4 h after drug administration. Antibiotics, specifically amoxicillin or amoxicillin/clavulanate, represent the most frequent drugs involved. Symptoms include nausea, vomiting, abdominal pain, diarrhea, pallor, lethargy, and dehydration, which can be severe and result in hypovolemic shock. The main laboratory finding is neutrophilic leukocytosis. To the best of our knowledge, 12 cases of DIES (9 children-onset and 3 adult-onset cases) were described in the literature. DIES is a rare clinically well-described allergic disease; however, the pathogenetic mechanism is still unclear. It requires to be recognized early and correctly treated by physicians.
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Affiliation(s)
- Paola Di Filippo
- Department of Pediatrics, University of Chieti, 66100 Chieti, Italy
| | | | | | - Beatrice Panetti
- Department of Pediatrics, University of Chieti, 66100 Chieti, Italy
| | - Sabrina Di Pillo
- Department of Pediatrics, University of Chieti, 66100 Chieti, Italy
| | | | - Marina Attanasi
- Department of Pediatrics, University of Chieti, 66100 Chieti, Italy
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7
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Ali SE, Meng X, Kafu L, Hammond S, Zhao Q, Ogese M, Sison-Young R, Jones R, Chan B, Livoti L, Sun Y, Sun L, Liu H, Topping A, Goldring C, Zhang F, Naisbitt DJ. Detection of Hepatic Drug Metabolite-Specific T-Cell Responses Using a Human Hepatocyte, Immune Cell Coculture System. Chem Res Toxicol 2023; 36:390-401. [PMID: 36812109 PMCID: PMC10031640 DOI: 10.1021/acs.chemrestox.2c00343] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Drug-responsive T-cells are activated with the parent compound or metabolites, often via different pathways (pharmacological interaction and hapten). An obstacle to the investigation of drug hypersensitivity is the scarcity of reactive metabolites for functional studies and the absence of coculture systems to generate metabolites in situ. Thus, the aim of this study was to utilize dapsone metabolite-responsive T-cells from hypersensitive patients, alongside primary human hepatocytes to drive metabolite formation, and subsequent drug-specific T-cell responses. Nitroso dapsone-responsive T-cell clones were generated from hypersensitive patients and characterized in terms of cross-reactivity and pathways of T-cell activation. Primary human hepatocytes, antigen-presenting cells, and T-cell cocultures were established in various formats with the liver and immune cells separated to avoid cell contact. Cultures were exposed to dapsone, and metabolite formation and T-cell activation were measured by LC-MS and proliferation assessment, respectively. Nitroso dapsone-responsive CD4+ T-cell clones from hypersensitive patients were found to proliferate and secrete cytokines in a dose-dependent manner when exposed to the drug metabolite. Clones were activated with nitroso dapsone-pulsed antigen-presenting cells, while fixation of antigen-presenting cells or omission of antigen-presenting cells from the assay abrogated the nitroso dapsone-specific T-cell response. Importantly, clones displayed no cross-reactivity with the parent drug. Nitroso dapsone glutathione conjugates were detected in the supernatant of hepatocyte immune cell cocultures, indicating that hepatocyte-derived metabolites are formed and transferred to the immune cell compartment. Similarly, nitroso dapsone-responsive clones were stimulated to proliferate with dapsone, when hepatocytes were added to the coculture system. Collectively, our study demonstrates the use of hepatocyte immune cell coculture systems to detect in situ metabolite formation and metabolite-specific T-cell responses. Similar systems should be used in future diagnostic and predictive assays to detect metabolite-specific T-cell responses when synthetic metabolites are not available.
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Affiliation(s)
- Serat-E Ali
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Ashton Street, Liverpool L69 3GE, U.K
- Proteintech Group, 4th Floor, 196 Deansgate, Manchester M3 3WF, U.K
| | - Xiaoli Meng
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Ashton Street, Liverpool L69 3GE, U.K
| | - Laila Kafu
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Ashton Street, Liverpool L69 3GE, U.K
| | - Sean Hammond
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Ashton Street, Liverpool L69 3GE, U.K
- Apconix Alderley Park, Alderley Edge, Cheshire SK10 4TG, U.K
| | - Qing Zhao
- Shandong Provincial Hospital for Skin Diseases & Shandong Provincial Institute of Dermatology and Venereology, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Monday Ogese
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Ashton Street, Liverpool L69 3GE, U.K
| | - Rowena Sison-Young
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Ashton Street, Liverpool L69 3GE, U.K
| | - Robert Jones
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Ashton Street, Liverpool L69 3GE, U.K
- Department of Hepatobiliary Surgery, Aintree University Hospital, Liverpool University Hospitals, NHS Foundation Trust, Liverpool L9 7AL, U.K
| | - Benjamin Chan
- Department of Hepatobiliary Surgery, Aintree University Hospital, Liverpool University Hospitals, NHS Foundation Trust, Liverpool L9 7AL, U.K
| | - Lucia Livoti
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Ashton Street, Liverpool L69 3GE, U.K
| | - Yonghu Sun
- Shandong Provincial Hospital for Skin Diseases & Shandong Provincial Institute of Dermatology and Venereology, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Lele Sun
- Shandong Provincial Hospital for Skin Diseases & Shandong Provincial Institute of Dermatology and Venereology, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Hong Liu
- Shandong Provincial Hospital for Skin Diseases & Shandong Provincial Institute of Dermatology and Venereology, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Anthony Topping
- School of Engineering, The Quadrangle, The University of Liverpool, Brownlow Hill, Liverpool L69 3GH, U.K
| | - Christopher Goldring
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Ashton Street, Liverpool L69 3GE, U.K
| | - Furen Zhang
- Shandong Provincial Hospital for Skin Diseases & Shandong Provincial Institute of Dermatology and Venereology, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Dean John Naisbitt
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Ashton Street, Liverpool L69 3GE, U.K
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Sullivan CM, Paul NS, Rieder MJ. Bridging the gap between bench and clinic: the importance of understanding the mechanism of iodinated contrast media hypersensitivity. Br J Radiol 2023; 96:20220494. [PMID: 36395475 PMCID: PMC10997019 DOI: 10.1259/bjr.20220494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 10/28/2022] [Accepted: 11/09/2022] [Indexed: 11/18/2022] Open
Abstract
Since the advent of CT, iodinated contract media (ICM) has become one of the most regularly administered intravenous medications in clinical settings. Although considered generally safe, ICM is one of the most common causes of adverse drug reactions in clinical practice, accounting for more than 2 million adverse reactions worldwide. Currently, there are few useful tools to diagnose patient hypersensitivity, with the major limitation being the lack of consensus regarding the mechanisms of hypersensitivity to ICM. While there is an overwhelming abundance of literature pertaining to clinical features including incidence, symptomatology, and risk, few studies have further investigated the underlying mechanisms behind their clinical observations. Of the available literature discussing pathophysiology, most primary studies were completed over 20 years ago, since which the molecular characteristics of ICM have changed. Furthermore, many reviews mentioning pathophysiology fail to adequately emphasize the clinical importance of understanding the molecular pathways involved in hypersensitivity. In this review, we aim to emphasize the clinical relevance of pathophysiology as it relates to the prediction and diagnosis of hypersensitivity reactions to ICM. To this end, we will first briefly characterize hypersensitivity reactions to ICM with respect to epidemiology and clinical presentation. We will then present the existing evidence supporting various proposed mechanisms of hypersensitivity, highlighting the gaps that remain in the mechanistic delineation of both immediate and delayed reactions. Finally, we discuss the possibility of in vitro testing as a way to predict and diagnose hypersensitivity reactions, pending a more complete elucidation of mechanisms.
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Affiliation(s)
- Caitlin M Sullivan
- Undergraduate Medicine, Schulich School of Medicine and
Dentistry, University of Western Ontario, London, ON,
Canada
| | - Narinder S Paul
- Undergraduate Medicine, Schulich School of Medicine and
Dentistry, University of Western Ontario, London, ON,
Canada
| | - Michael J Rieder
- Undergraduate Medicine, Schulich School of Medicine and
Dentistry, University of Western Ontario, London, ON,
Canada
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9
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Hernandez-Jaimes OA, Cazares-Olvera DV, Line J, Moreno-Eutimio MA, Gómez-Castro CZ, Naisbitt DJ, Castrejón-Flores JL. Advances in Our Understanding of the Interaction of Drugs with T-cells: Implications for the Discovery of Biomarkers in Severe Cutaneous Drug Reactions. Chem Res Toxicol 2022; 35:1162-1183. [PMID: 35704769 DOI: 10.1021/acs.chemrestox.1c00434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Drugs can activate different cells of the immune system and initiate an immune response that can lead to life-threatening diseases collectively known as severe cutaneous adverse reactions (SCARs). Antibiotics, anticonvulsants, and antiretrovirals are involved in the development of SCARs by the activation of αβ naïve T-cells. However, other subsets of lymphocytes known as nonconventional T-cells with a limited T-cell receptor repertoire and innate and adaptative functions also recognize drugs and drug-like molecules, but their role in the pathogenesis of SCARs has only just begun to be explored. Despite 30 years of advances in our understanding of the mechanisms in which drugs interact with T-cells and the pathways for tissue injury seen during T-cell activation, at present, the development of useful clinical biomarkers for SCARs or predictive preclinical in vitro assays that could identify immunogenic moieties during drug discovery is an unmet goal. Therefore, the present review focuses on (i) advances in the understanding of the pathogenesis of SCARs reactions, (ii) a description of the interaction of drugs with conventional and nonconventional T-cells, and (iii) the current state of soluble blood circulating biomarker candidates for SCARs.
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Affiliation(s)
| | - Diana Valeria Cazares-Olvera
- Instituto Politécnico Nacional, Unidad Profesional Interdisciplinaria de Biotecnología, México City 07340, México
| | - James Line
- MRC Centre for Drug Safety Science, Department of Pharmacology, University of Liverpool, Liverpool L69 3GE, United Kingdom
| | | | | | - Dean J Naisbitt
- MRC Centre for Drug Safety Science, Department of Pharmacology, University of Liverpool, Liverpool L69 3GE, United Kingdom
| | - José Luis Castrejón-Flores
- Instituto Politécnico Nacional, Unidad Profesional Interdisciplinaria de Biotecnología, México City 07340, México
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10
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Iulini M, Maddalon A, Galbiati V, Corsini E. The Modified THP-1 Activation Assay for the In Vitro Identification of Drug-Inducing Systemic Hypersensitivity. FRONTIERS IN TOXICOLOGY 2022; 4:814050. [PMID: 35295210 PMCID: PMC8915845 DOI: 10.3389/ftox.2022.814050] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 01/31/2022] [Indexed: 12/23/2022] Open
Abstract
The development of new low molecular weight drugs has many chances of failure and is an expensive process. Currently, there are no screening methods and/or models to assess the hazard of hypersensitivity reactions to drugs (DHRs) in the preclinical phase. DHRs represent 6–15% of adverse drug reactions. Although rare, DHRs represent a serious health problem for predisposed individuals, resulting, in some cases, in life-threatening pathologies. To date, there are no in vitro or in vivo sensitive models able to predict the sensitizing potential of drugs in the preclinical tests, and these reactions are highlighted only after the drug has been placed on the market, affecting both population and public health. This article describes a novel approach methodology for the study of the sensitizing potential of drugs based on the use of the human promyelocytic cell line THP-1 as a surrogate for dendritic cells. The method is based on the upregulation of specific surface markers (CD86 and CD54) and on the production of IL-8. In our experience, the THP-1 activation assay allowed the correct identification of drugs known to induce systemic hypersensitivity in humans, including the one associated with specific HLAs. This method may help to discover possible systemic hypersensitivity reactions early in the preclinical phase of drug development.
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11
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Pichler WJ, Watkins S, Yerly D. Risk Assessment in Drug Hypersensitivity: Detecting Small Molecules Which Outsmart the Immune System. FRONTIERS IN ALLERGY 2022; 3:827893. [PMID: 35386664 PMCID: PMC8974731 DOI: 10.3389/falgy.2022.827893] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 01/26/2022] [Indexed: 12/19/2022] Open
Abstract
Drug hypersensitivity (DH) reactions are clinically unusual because the underlying immune stimulations are not antigen-driven, but due to non-covalent drug-protein binding. The drugs may bind to immune receptors like HLA or TCR which elicits a strong T cell reaction (p-i concept), the binding may enhance the affinity of antibodies (enhanced affinity model), or drug binding may occur on soluble proteins which imitate a true antigen (fake antigen model). These novel models of DH could have a major impact on how to perform risk assessments in drug development. Herein, we discuss the difficulties of detecting such non-covalent, labile and reversible, but immunologically relevant drug-protein interactions early on in drug development. The enormous diversity of the immune system, varying interactions, and heterogeneous functional consequences make it to a challenging task. We propose that a realistic approach to detect clinically relevant non-covalent drug interactions for a new drug could be based on a combination of in vitro cell culture assays (using a panel of HLA typed donor cells) and functional analyses, supplemented by structural analysis (computational data) of the reactive cells/molecules. When drug-reactive cells/molecules with functional impact are detected in these risk assessments, a close clinical monitoring of the drug may reveal the true incidence of DH, as suppressing but also enhancing factors occurring in vivo can influence the clinical manifestation of a DH.
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12
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Pichler WJ. The important role of non-covalent drug-protein interactions in drug hypersensitivity reactions. Allergy 2022; 77:404-415. [PMID: 34037262 PMCID: PMC9291849 DOI: 10.1111/all.14962] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 05/14/2021] [Accepted: 05/20/2021] [Indexed: 02/06/2023]
Abstract
Drug hypersensitivity reactions (DHR) are heterogeneous and unusual immune reactions with rather unique clinical presentations. Accumulating evidence indicates that certain non‐covalent drug‐protein interactions are able to elicit exclusively effector functions of antibody reactions or complete T‐cell reactions which contribute substantially to DHR. Here, we discuss three key interactions; (a) mimicry: whereby soluble, non‐covalent drug‐protein complexes (“fake antigens”) mimic covalent drug‐protein adducts; (b) increased antibody affinity: for example, in quinine‐type immune thrombocytopenia where the drug gets trapped between antibody and membrane‐bound glycoprotein; and (c) p‐i‐stimulation: where naïve and memory T cells are activated by direct binding of drugs to the human leukocyte antigen and/or T‐cell receptors. This transient drug‐immune receptor interaction initiates a polyclonal T‐cell response with mild‐to‐severe DHR symptoms. Notable complications arising from p‐i DHR can include viral reactivations, autoimmunity, and multiple drug hypersensitivity. In conclusion, DHR is characterized by abnormal immune stimulation driven by non‐covalent drug‐protein interactions. This contrasts DHR from “normal” immunity, which relies on antigen‐formation by covalent hapten‐protein adducts and predominantly results in asymptomatic immunity.
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13
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Hammond S, Gibson A, Jaruthamsophon K, Roth S, Mosedale M, Naisbitt DJ. Shedding Light on Drug-Induced Liver Injury: Activation of T Cells From Drug Naive Human Donors With Tolvaptan and a Hydroxybutyric Acid Metabolite. Toxicol Sci 2021; 179:95-107. [PMID: 33078835 DOI: 10.1093/toxsci/kfaa157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Exposure to tolvaptan is associated with a significant risk of liver injury in a small fraction of patients with autosomal dominant polycystic kidney disease. The observed delayed onset of liver injury of between 3 and 18 months after commencing tolvaptan treatment, along with rapid recurrence of symptoms following re-challenge is indicative of an adaptive immune attack. This study set out to assess the intrinsic immunogenicity of tolvaptan and pathways of drug-specific T-cell activation using in vitro cell culture platforms. Tolvaptan (n = 7), as well as oxybutyric (DM-4103, n = 1) and hydroxybutyric acid (DM-4107, n = 18) metabolite-specific T-cell clones were generated from tolvaptan naive healthy donor peripheral blood mononuclear cells. Tolvaptan and DM-4103 T-cell clones could also be activated with DM-4107, whereas T-cell clones originally primed with DM-4107 were highly specific to this compound. A signature cytokine profile (IFN-γ, IL-13, granzyme B, and perforin) for almost all T-cell clones was identified. Mechanistically, compound-specific T-cell clone activation was dependent on the presence of soluble drug and could occur within 4 h of drug exposure, ruling out a classical hapten mechanism. However, antigen processing dependence drug presentation was indicated in many T-cell clones. Collectively these data show that tolvaptan-associated liver injury may be attributable to an adaptive immune attack upon the liver, with tolvaptan- and metabolite-specific T cells identified as candidate effector cells in such etiology.
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Affiliation(s)
- Sean Hammond
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L69 3GE, UK
| | - Andrew Gibson
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L69 3GE, UK
| | - Kanoot Jaruthamsophon
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L69 3GE, UK.,Department of Pathology, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
| | - Sharin Roth
- Otsuka Pharmaceutical Dev. & Comm., Inc., Research Blvd, Rockville, Maryland 20882
| | - Merrie Mosedale
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, Chapel Hill, North Carolina 27599
| | - Dean J Naisbitt
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L69 3GE, UK
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14
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Fernandez‐Santamaria R, Bogas G, Palomares F, Salas M, Fernandez TD, Jimenez I, Barrionuevo E, Doña I, Torres MJ, Mayorga C. Dendritic cells inclusion and cell-subset assessment improve flow-cytometry-based proliferation test in non-immediate drug hypersensitivity reactions. Allergy 2021; 76:2123-2134. [PMID: 33523478 DOI: 10.1111/all.14755] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 12/09/2020] [Accepted: 01/04/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Lymphocyte transformation test (LTT) has been widely used to evaluate non-immediate drug hypersensitivity reactions (NIDHRs). However, the lack of standardization and the low sensitivity have limited its routine diagnostic use. The drug presentation by dendritic cells (DCs) and the assessment of proliferation on effector cells have shown promising results. Flow-cytometry-based methods can help apply these improvements. We aimed to assess the added value of using drug-primed-DCs and the determination of the proliferative response of different lymphocyte subpopulations in NIDHRs. METHODS Patients with confirmed NIDHR were evaluated by both conventional (C-LTT) and with drug-primed-DCs LTT (dDC-LTT)analysing the proliferative response in T cells and other effector cell subpopulations by using the fluorescent molecule, carboxyfluorescein diacetate succinimidyl ester (CFSE). RESULTS The C-LTT showed a significantly lower sensitivity (29.4%) compared with dDC-LTT (61.8%), which was confirmed analysing each particular clinical entity: SJS-TEN (62.5% vs 87.5%), MPE (15% vs 47.4%) and AGEP (33% vs 80%). When including the effector cell subpopulations involved in each clinical entity, CD3+ +CD4+ Th 1 or CD3+ +NK cells in SJS-TEN, CD3+ +CD4+ Th 1+NK cells in MPE and CD3+ +NK cells in AGEP, we could significantly increase the sensitivity of the in vitro test to 100%, 68.4% and 100%, respectively, with an overall sensitivity of 87% and 85% of specificity in NIDHR. CONCLUSIONS The use of a flow-cytometry-based test, DCs as drug presenting cells, and focusing on effector cell subpopulations for each clinical entity significantly improved the drug-specific proliferative response in NIDHRs with a unique cellular in vitro test.
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Affiliation(s)
| | - Gador Bogas
- Allergy Unit Hospital Regional Universitario de Málaga‐HRUM Málaga Spain
| | - Francisca Palomares
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA Málaga Spain
| | - Maria Salas
- Allergy Unit Hospital Regional Universitario de Málaga‐HRUM Málaga Spain
| | - Tahia D. Fernandez
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA Málaga Spain
- Allergy Unit Hospital Regional Universitario de Málaga‐HRUM Málaga Spain
| | - Isabel Jimenez
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA Málaga Spain
| | | | - Inmaculada Doña
- Allergy Unit Hospital Regional Universitario de Málaga‐HRUM Málaga Spain
| | - Maria Jose Torres
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA Málaga Spain
- Medicine Department Universidad de Málaga‐UMA Málaga Spain
- Allergy Unit Hospital Regional Universitario de Málaga‐HRUM Málaga Spain
- Nanostructures for Diagnosing and Treatment of Allergic Diseases Laboratory Centro Andaluz de Nanomedicina y Biotecnología‐BIONAND Málaga Spain
| | - Cristobalina Mayorga
- Allergy Research Group Instituto de Investigación Biomédica de Málaga‐IBIMA Málaga Spain
- Allergy Unit Hospital Regional Universitario de Málaga‐HRUM Málaga Spain
- Nanostructures for Diagnosing and Treatment of Allergic Diseases Laboratory Centro Andaluz de Nanomedicina y Biotecnología‐BIONAND Málaga Spain
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15
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Bechara R, Feray A, Pallardy M. Drug and Chemical Allergy: A Role for a Specific Naive T-Cell Repertoire? Front Immunol 2021; 12:653102. [PMID: 34267746 PMCID: PMC8276071 DOI: 10.3389/fimmu.2021.653102] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 06/15/2021] [Indexed: 01/11/2023] Open
Abstract
Allergic reactions to drugs and chemicals are mediated by an adaptive immune response involving specific T cells. During thymic selection, T cells that have not yet encountered their cognate antigen are considered naive T cells. Due to the artificial nature of drug/chemical-T-cell epitopes, it is not clear whether thymic selection of drug/chemical-specific T cells is a common phenomenon or remains limited to few donors or simply does not exist, suggesting T-cell receptor (TCR) cross-reactivity with other antigens. Selection of drug/chemical-specific T cells could be a relatively rare event accounting for the low occurrence of drug allergy. On the other hand, a large T-cell repertoire found in multiple donors would underline the potential of a drug/chemical to be recognized by many donors. Recent observations raise the hypothesis that not only the drug/chemical, but also parts of the haptenated protein or peptides may constitute the important structural determinants for antigen recognition by the TCR. These observations may also suggest that in the case of drug/chemical allergy, the T-cell repertoire results from particular properties of certain TCR to recognize hapten-modified peptides without need for previous thymic selection. The aim of this review is to address the existence and the role of a naive T-cell repertoire in drug and chemical allergy. Understanding this role has the potential to reveal efficient strategies not only for allergy diagnosis but also for prediction of the immunogenic potential of new chemicals.
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Affiliation(s)
- Rami Bechara
- Division of Rheumatology & Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Alexia Feray
- Inflammation, Microbiome and Immunosurveillance, Université Paris-Saclay, INSERM, Châtenay-Malabry, France
| | - Marc Pallardy
- Inflammation, Microbiome and Immunosurveillance, Université Paris-Saclay, INSERM, Châtenay-Malabry, France
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16
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Ogese MO, Lister A, Gardner J, Meng X, Alfirevic A, Pirmohamed M, Park BK, Naisbitt DJ. Deciphering adverse drug reactions: in vitro priming and characterization of vancomycin-specific T-cells from healthy donors expressing HLA-A*32:01. Toxicol Sci 2021; 183:139-153. [PMID: 34175955 PMCID: PMC8404995 DOI: 10.1093/toxsci/kfab084] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Drug rash with eosinophilia with systemic symptoms (DRESS) is a serious adverse event associated with use of the glycopeptide antibiotic vancomycin. Vancomycin-induced drug rash with eosinophilia with systemic symptoms is associated with the expression of human leukocyte antigen (HLA)-A*32:01, suggesting that the drug interacts with this HLA to activate CD8+ T cells. The purpose of this study was to utilize peripheral blood mononuclear cell from healthy donors to: (1) investigate whether expression of HLA-A*32:01 is critical for the priming naïve of T cells with vancomycin and (2) generate T-cell clones (TCC) to determine whether vancomycin exclusively activates CD8+ T cells and to define cellular phenotype, pathways of drug presentation and cross-reactivity. Dendritic cells were cultured with naïve T cells and vancomycin for 2 weeks. On day 14, cells were restimulated with vancomycin and T-cell proliferation was assessed by [3H]-thymidine incorporation. Vancomycin-specific TCC were generated by serial dilution and repetitive mitogen stimulation. Naïve T cells from HLA-A*02:01 positive and negative donors were activated with vancomycin; however the strength of the induced response was significantly stronger in donors expressing HLA-A*32:01. Vancomycin-responsive CD4+ and CD8+ TCC from HLA-A*32:01+ donors expressed high levels of CXCR3 and CCR4, and secreted IFN‐γ, IL-13, and cytolytic molecules. Activation of CD8+ TCC was HLA class I-restricted and dependent on a direct vancomycin HLA binding interaction with no requirement for processing. Several TCC displayed cross-reactivity with teicoplanin and daptomycin. To conclude, this study provides evidence that vancomycin primes naïve T cells from healthy donors expressing HLA-A*32:01 through a direct pharmacological binding interaction. Cross-reactivity of CD8+ TCC with teicoplanin provides an explanation for the teicoplanin reactions observed in vancomycin hypersensitive patients.
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17
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Thomson PJ, Kafu L, Meng X, Snoeys J, De Bondt A, De Maeyer D, Wils H, Leclercq L, Vinken P, Naisbitt DJ. Drug-specific T-cell responses in patients with liver injury following treatment with the BACE inhibitor atabecestat. Allergy 2021; 76:1825-1835. [PMID: 33150583 DOI: 10.1111/all.14652] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 10/01/2020] [Accepted: 10/16/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Atabecestat is an orally administered BACE inhibitor developed to treat Alzheimer's disease. Elevations in hepatic enzymes were detected in a number of in trial patients, which resulted in termination of the drug development programme. Immunohistochemical characterization of liver tissue from an index case of atabecestat-mediated liver injury revealed an infiltration of T-lymphocytes in areas of hepatocellular damage. This coupled with the fact that liver injury had a delayed onset suggests that the adaptive immune system may be involved in the pathogenesis. The aim of this study was to generate and characterize atabecestat(metabolite)-responsive T-cell clones from patients with liver injury. METHODS Peripheral blood mononuclear cells were cultured with atabecestat and its metabolites (diaminothiazine [DIAT], N-acetyl DIAT & epoxide) and cloning was attempted in a number of patients. Atabecestat(metabolite)-responsive clones were analysed in terms of T-cell phenotype, function, pathways of T-cell activation and cross-reactivity with structurally related compounds. RESULTS CD4+ T-cell clones activated with the DIAT metabolite were detected in 5 out of 8 patients (up to 4.5% cloning efficiency). Lower numbers of CD4+ and CD8+ clones displayed reactivity against atabecestat. Clones proliferated and secreted IFN-γ, IL-13 and cytolytic molecules following atabecestat or DIAT stimulation. Certain atabecestat and DIAT-responsive clones cross-reacted with N-acetyl DIAT; however, no cross-reactivity was observed between atabecestat and DIAT. CD4+ clones were activated through a direct, reversible compound-HLA class II interaction with no requirement for protein processing. CONCLUSION The detection of atabecestat metabolite-responsive T-cell clones activated via a pharmacological interactions pathway in patients with liver injury is indicative of an immune-based mechanism for the observed hepatic enzyme elevations.
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Affiliation(s)
- Paul J. Thomson
- MRC Centre for Drug Safety Science Department of Molecular and Clinical Pharmacology University of Liverpool Liverpool UK
| | - Laila Kafu
- MRC Centre for Drug Safety Science Department of Molecular and Clinical Pharmacology University of Liverpool Liverpool UK
| | - Xiaoli Meng
- MRC Centre for Drug Safety Science Department of Molecular and Clinical Pharmacology University of Liverpool Liverpool UK
| | - Jan Snoeys
- Drug Metabolism and Pharmacokinetics Janssen R&D Beerse Belgium
| | - An De Bondt
- Discovery Sciences Janssen R&D Beerse Belgium
| | | | - Hans Wils
- Discovery Sciences Janssen R&D Beerse Belgium
| | | | | | - Dean J. Naisbitt
- MRC Centre for Drug Safety Science Department of Molecular and Clinical Pharmacology University of Liverpool Liverpool UK
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18
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Trubiano JA, Soria A, Torres MJ, Trautmann A. Treating Through Drug-Associated Exanthems in Drug Allergy Management: Current Evidence and Clinical Aspects. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2021; 9:2984-2993. [PMID: 33878455 DOI: 10.1016/j.jaip.2021.04.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/01/2021] [Accepted: 04/07/2021] [Indexed: 10/21/2022]
Abstract
In the setting of an acute cutaneous adverse drug reaction there is increasing interest in selected phenotypes and hosts to continue drug therapy, especially in settings in which there are limited therapeutic options. This concept of "treating through," defined as the continued use of a drug in the setting of, in particular maculopapular exanthema, potentially avoids unnecessary drug discontinuation. A review of the recent literature, historical viewpoints, and expert opinion are provided within to form recommendations and algorithms for a "treating-through" approach.
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Affiliation(s)
- Jason A Trubiano
- Centre for Antibiotic Allergy and Research, Department of Infectious Diseases, Austin Health, Heidelberg, VIC, Australia; Department of Medicine (Austin Health), University of Melbourne, Heidelberg, VIC, Australia.
| | - Angèle Soria
- Sorbonne Universités, Paris, France; Service de Dermatologie et d'Allergologie, Hôpital Tenon, Paris HUEP, APHP, Paris, France; Centre d'Immunologie et des Maladies Infectieuses - Paris (Cimi-Paris), INSERM U1135, Paris, France
| | - Maria J Torres
- Allergy Unit, IBIMA-Regional University Hospital of Malaga UMA, Malaga, Spain; Andalusian Center for Nanomedicine and Biotechnology - BIONAND, Malaga, Spain
| | - Axel Trautmann
- Department of Dermatology and Allergy, University Hospital Würzburg, Würzburg, Germany
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19
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Hammond S, Thomson P, Meng X, Naisbitt D. In-Vitro Approaches to Predict and Study T-Cell Mediated Hypersensitivity to Drugs. Front Immunol 2021; 12:630530. [PMID: 33927714 PMCID: PMC8076677 DOI: 10.3389/fimmu.2021.630530] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 03/17/2021] [Indexed: 01/11/2023] Open
Abstract
Mitigating the risk of drug hypersensitivity reactions is an important facet of a given pharmaceutical, with poor performance in this area of safety often leading to warnings, restrictions and withdrawals. In the last 50 years, efforts to diagnose, manage, and circumvent these obscure, iatrogenic diseases have resulted in the development of assays at all stages of a drugs lifespan. Indeed, this begins with intelligent lead compound selection/design to minimize the existence of deleterious chemical reactivity through exclusion of ominous structural moieties. Preclinical studies then investigate how compounds interact with biological systems, with emphasis placed on modeling immunological/toxicological liabilities. During clinical use, competent and accurate diagnoses are sought to effectively manage patients with such ailments, and pharmacovigilance datasets can be used for stratification of patient populations in order to optimise safety profiles. Herein, an overview of some of the in-vitro approaches to predict intrinsic immunogenicity of drugs and diagnose culprit drugs in allergic patients after exposure is detailed, with current perspectives and opportunities provided.
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Affiliation(s)
- Sean Hammond
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, United Kingdom
- ApconiX, Alderley Park, Alderley Edge, United Kingdom
| | - Paul Thomson
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, United Kingdom
| | - Xiaoli Meng
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, United Kingdom
| | - Dean Naisbitt
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, United Kingdom
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20
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Adair K, Meng X, Naisbitt DJ. Drug hapten-specific T-cell activation: Current status and unanswered questions. Proteomics 2021; 21:e2000267. [PMID: 33651918 DOI: 10.1002/pmic.202000267] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 02/14/2021] [Accepted: 02/16/2021] [Indexed: 11/07/2022]
Abstract
Drug haptens are formed from the irreversible, covalent binding of drugs to nucleophilic moieties on proteins, which can warrant adverse reactions in the body including severe delayed-type, T-cell mediated, drug hypersensitivity reactions (DHRs). While three main pathways exist for the activation of T-cells in DHRs, namely the hapten model, the pharmacological interaction model and the altered peptide repertoire model, the exact antigenic determinants responsible have not yet been defined. In recent years, progress has been made using advanced mass spectrometry-based proteomic methods to identify protein carriers and characterise the structure of drug-haptenated proteins. Since genome-wide association studies discovered a link between human leukocyte antigens (HLA) and an individual's susceptibility to DHRs, much effort has been made to define the drug-associated HLA ligands driving T-cell activation, including the elution of natural HLA peptides from HLA molecules and the generation of HLA-binding peptides. In this review, we discuss our current methodology used to design and synthesise drug-modified HLA ligands to investigate their immunogenicity using T-cell models, and thus their implication in drug hypersensitivity.
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Affiliation(s)
- Kareena Adair
- Department of Molecular and Clinical Pharmacology, MRC Centre for Drug Safety Science, University of Liverpool, Liverpool, UK
| | - Xiaoli Meng
- Department of Molecular and Clinical Pharmacology, MRC Centre for Drug Safety Science, University of Liverpool, Liverpool, UK
| | - Dean J Naisbitt
- Department of Molecular and Clinical Pharmacology, MRC Centre for Drug Safety Science, University of Liverpool, Liverpool, UK
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Goh SJR, Tuomisto JEE, Purcell AW, Mifsud NA, Illing PT. The complexity of T cell-mediated penicillin hypersensitivity reactions. Allergy 2021; 76:150-167. [PMID: 32383256 DOI: 10.1111/all.14355] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 04/16/2020] [Accepted: 04/30/2020] [Indexed: 12/20/2022]
Abstract
Penicillin refers to a group of beta-lactam antibiotics that are the first-line treatment for a range of infections. However, they also possess the ability to form novel antigens, or neoantigens, through haptenation of proteins and can stimulate a range of immune-mediated adverse reactions-collectively known as drug hypersensitivity reactions (DHRs). IgE-mediated reactions towards these neoantigens are well studied; however, IgE-independent reactions are less well understood. These reactions usually manifest in a delayed manner as different forms of cutaneous eruptions or liver injury consistent with priming of an immune response. Ex vivo studies have confirmed the infiltration of T cells into the site of inflammation, and the subsets of T cells involved appear dependent on the nature of the reaction. Here, we review the evidence that has led to our current understanding of these immune-mediated reactions, discussing the nature of the lesional T cells, the characterization of drug-responsive T cells isolated from patient blood, and the potential mechanisms by which penicillins enter the antigen processing and presentation pathway to stimulate these deleterious responses. Thus, we highlight the need for a more comprehensive understanding of the underlying genetic and molecular basis of penicillin-induced DHRs.
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Affiliation(s)
- Shawn J. R. Goh
- Infection and Immunity Program Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology Monash University Clayton Vic. Australia
| | - Johanna E. E. Tuomisto
- Infection and Immunity Program Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology Monash University Clayton Vic. Australia
| | - Anthony W. Purcell
- Infection and Immunity Program Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology Monash University Clayton Vic. Australia
| | - Nicole A. Mifsud
- Infection and Immunity Program Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology Monash University Clayton Vic. Australia
| | - Patricia T. Illing
- Infection and Immunity Program Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology Monash University Clayton Vic. Australia
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Ogese MO, Lister A, Jenkins RE, Meng X, Alfirevic A, Douglas L, Mcloughlin R, Silva E, Park BK, Pirmohamed M, Naisbitt DJ. Characterization of Clozapine-Responsive Human T Cells. THE JOURNAL OF IMMUNOLOGY 2020; 205:2375-2390. [PMID: 32989092 DOI: 10.4049/jimmunol.2000646] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 08/27/2020] [Indexed: 01/02/2023]
Abstract
Use of the atypical antipsychotic clozapine is associated with life-threatening agranulocytosis. The delayed onset and the association with HLA variants are characteristic of an immunological mechanism. The objective of this study was to generate clozapine-specific T cell clones (TCC) and characterize pathways of T cell activation and cross-reactivity with clozapine metabolites and olanzapine. TCC were established and characterized by culturing PBMCs from healthy donors and patients with a history of clozapine-induced agranulocytosis. Modeling was used to explore the drug-HLA binding interaction. Global TCC protein changes were profiled by mass spectrometry. Six well-growing clozapine-responsive CD4+ and CD8+ TCC were used for experiments; activation of TCC required APC, with clozapine interacting directly at therapeutic concentrations with several HLA-DR molecules. TCC were also activated with N-desmethylclozapine and olanzapine at supratherapeutic concentrations. Marked changes in TCC protein expression profiles were observed when clozapine treatment was compared with olanzapine and the medium control. Docking of the compounds into the HLA-DRB1*15:01 and HLA-DRB1*04:01 binding clefts revealed that clozapine and olanzapine bind in a similar conformation to the P4-P6 peptide binding pockets, whereas clozapine N-oxide, which did not activate the TCC, bound in a different conformation. TCC secreted Th1, Th2, and Th22 cytokines and effector molecules and expressed TCR Vβ 5.1, 16, 20, and 22 as well as chemokine receptors CXCR3, CCR6, CCR4, and CCR9. Collectively, these data show that clozapine interacts at therapeutic concentrations with HLA-DR molecules and activates human CD4+ T cells. Olanzapine only activates TCC at supratherapeutic concentrations.
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Affiliation(s)
- Monday O Ogese
- Medical Research Council Centre for Drug Safety Science, Department Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L69 3GE, United Kingdom
| | - Adam Lister
- Medical Research Council Centre for Drug Safety Science, Department Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L69 3GE, United Kingdom
| | - Rosalind E Jenkins
- Medical Research Council Centre for Drug Safety Science, Department Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L69 3GE, United Kingdom
| | - Xiaoli Meng
- Medical Research Council Centre for Drug Safety Science, Department Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L69 3GE, United Kingdom
| | - Ana Alfirevic
- Medical Research Council Centre for Drug Safety Science, Department Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L69 3GE, United Kingdom
| | - Lisa Douglas
- Cheshire and Wirral Partnership National Health Service Foundation Trust, Chester CH2 1BQ, United Kingdom; and
| | - Rachel Mcloughlin
- Cheshire and Wirral Partnership National Health Service Foundation Trust, Chester CH2 1BQ, United Kingdom; and
| | - Edward Silva
- Mersey Care National Health Service Foundation Trust, Rathbone Low Secure Unit, Rathbone Hospital, Liverpool L13 4AW, United Kingdom
| | - B Kevin Park
- Medical Research Council Centre for Drug Safety Science, Department Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L69 3GE, United Kingdom
| | - Munir Pirmohamed
- Medical Research Council Centre for Drug Safety Science, Department Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L69 3GE, United Kingdom
| | - Dean J Naisbitt
- Medical Research Council Centre for Drug Safety Science, Department Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L69 3GE, United Kingdom;
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Kuijper E, French L, Tensen C, Vermeer M, Bouwes Bavinck J. Clinical and pathogenic aspects of the severe cutaneous adverse reaction epidermal necrolysis (EN). J Eur Acad Dermatol Venereol 2020; 34:1957-1971. [PMID: 32415695 PMCID: PMC7496676 DOI: 10.1111/jdv.16339] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 02/25/2020] [Indexed: 12/12/2022]
Abstract
The severe cutaneous adverse reaction epidermal necrolysis (EN) which includes toxic epidermal necrolysis and the milder Stevens-Johnson syndrome is characterized by epidermal loss due to massive keratinocyte apoptosis and/or necroptosis. EN is often caused by a drug mediating a specific TCR-HLA interaction via the (pro)hapten, pharmacological interaction or altered peptide loading mechanism involving a self-peptide presented by keratinocytes. (Memory) CD8 + T cells are activated and exhibit cytotoxicity against keratinocytes via the perforin/granzyme B and granulysin pathway and Fas/FasL interaction. Alternatively drug-induced annexin release by CD14 + monocytes can induce formyl peptide receptor 1 death of keratinocytes by necroptosis. Subsequent keratinocyte death stimulates local inflammation, activating other immune cells producing pro-inflammatory molecules and downregulating regulatory T cells. Widespread epidermal necrolysis and inflammation can induce life-threatening systemic effects, leading to high mortality rates. Research into genetic susceptibility aims to identify risk factors for eventual prevention of EN. Specific HLA class I alleles show the strongest association with EN, but risk variants have also been identified in genes involved in drug metabolism, cellular drug uptake, peptide presentation and function of CD8 + T cells and other immune cells involved in cytotoxic responses. After the acute phase of EN, long-term symptoms can remain or arise mainly affecting the skin and eyes. Mucosal sequelae are characterized by occlusions and strictures due to adherence of denuded surfaces and fibrosis following mucosal inflammation. In addition, systemic pathology can cause acute and chronic hepatic and renal symptoms. EN has a large psychological impact and strongly affects health-related quality of life among EN survivors.
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Affiliation(s)
- E.C. Kuijper
- Department of DermatologyLeiden University Medical CentreLeidenThe Netherlands
| | - L.E. French
- Department of Dermatology and AllergyUniversity HospitalLMU MunichMunichGermany
| | - C.P. Tensen
- Department of DermatologyLeiden University Medical CentreLeidenThe Netherlands
| | - M.H. Vermeer
- Department of DermatologyLeiden University Medical CentreLeidenThe Netherlands
| | - J.N. Bouwes Bavinck
- Department of DermatologyLeiden University Medical CentreLeidenThe Netherlands
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Naisbitt DJ, Olsson‐Brown A, Gibson A, Meng X, Ogese MO, Tailor A, Thomson P. Immune dysregulation increases the incidence of delayed-type drug hypersensitivity reactions. Allergy 2020; 75:781-797. [PMID: 31758810 DOI: 10.1111/all.14127] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 11/05/2019] [Accepted: 11/18/2019] [Indexed: 12/14/2022]
Abstract
Delayed-type, T cell-mediated, drug hypersensitivity reactions are a serious unwanted manifestation of drug exposure that develops in a small percentage of the human population. Drugs and drug metabolites are known to interact directly and indirectly (through irreversible protein binding and processing to the derived adducts) with HLA proteins that present the drug-peptide complex to T cells. Multiple forms of drug hypersensitivity are strongly linked to expression of a single HLA allele, and there is increasing evidence that drugs and peptides interact selectively with the protein encoded by the HLA allele. Despite this, many individuals expressing HLA risk alleles do not develop hypersensitivity when exposed to culprit drugs suggesting a nonlinear, multifactorial relationship in which HLA risk alleles are one factor. This has prompted a search for additional susceptibility factors. Herein, we argue that immune regulatory pathways are one key determinant of susceptibility. As expression and activity of these pathways are influenced by disease, environmental and patient factors, it is currently impossible to predict whether drug exposure will result in a health benefit, hypersensitivity or both. Thus, a concerted effort is required to investigate how immune dysregulation influences susceptibility towards drug hypersensitivity.
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Affiliation(s)
- Dean J. Naisbitt
- MRC Centre for Drug Safety Science Department of Clinical and Molecular Pharmacology The University of Liverpool Liverpool UK
| | - Anna Olsson‐Brown
- MRC Centre for Drug Safety Science Department of Clinical and Molecular Pharmacology The University of Liverpool Liverpool UK
| | - Andrew Gibson
- MRC Centre for Drug Safety Science Department of Clinical and Molecular Pharmacology The University of Liverpool Liverpool UK
| | - Xiaoli Meng
- MRC Centre for Drug Safety Science Department of Clinical and Molecular Pharmacology The University of Liverpool Liverpool UK
| | - Monday O. Ogese
- MRC Centre for Drug Safety Science Department of Clinical and Molecular Pharmacology The University of Liverpool Liverpool UK
| | - Arun Tailor
- MRC Centre for Drug Safety Science Department of Clinical and Molecular Pharmacology The University of Liverpool Liverpool UK
| | - Paul Thomson
- MRC Centre for Drug Safety Science Department of Clinical and Molecular Pharmacology The University of Liverpool Liverpool UK
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Ariza A, Fernández T, Bogas G, Torres M, Mayorga C. How Mechanism Knowledge Can Help to Management of Drug Hypersensitivity. CURRENT TREATMENT OPTIONS IN ALLERGY 2020. [DOI: 10.1007/s40521-020-00244-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hammond S, Thomson PJ, Ogese MO, Naisbitt DJ. T-Cell Activation by Low Molecular Weight Drugs and Factors That Influence Susceptibility to Drug Hypersensitivity. Chem Res Toxicol 2019; 33:77-94. [PMID: 31687800 DOI: 10.1021/acs.chemrestox.9b00327] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Drug hypersensitivity reactions adversely affect treatment outcome, increase the length of patients' hospitalization, and limit the prescription options available to physicians. In addition, late stage drug attrition and the withdrawal of licensed drugs cost the pharmaceutical industry billions of dollars. This significantly increases the overall cost of drug development and by extension the price of licensed drugs. Drug hypersensitivity reactions are characterized by a delayed onset, and reactions tend to be more serious upon re-exposure. The role of drug-specific T-cells in the pathogenesis of drug hypersensitivity reactions and definition of the nature of the binding interaction of drugs with HLA and T-cell receptors continues to be the focus of intensive research, primarily because susceptibility is associated with expression of one or a small number of HLA alleles. This review critically examines the mechanisms of T-cell activation by drugs. Specific examples of drugs that activate T-cells via the hapten, the pharmacological interaction with immune receptors and the altered self-peptide repertoire pathways, are discussed. Furthermore, the impacts of drug metabolism, drug-protein adduct formation, and immune regulation on the development of drug antigen-responsive T-cells are highlighted. The knowledge gained from understanding the pathways of T-cell activation and susceptibility factors for drug hypersensitivity will provide the building blocks for the development of predictive in vitro assays that will prevent or help to minimize the incidence of these reactions in clinic.
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Affiliation(s)
- Sean Hammond
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology , University of Liverpool , Liverpool L69 3GE , U.K
| | - Paul J Thomson
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology , University of Liverpool , Liverpool L69 3GE , U.K
| | - Monday O Ogese
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology , University of Liverpool , Liverpool L69 3GE , U.K
| | - Dean J Naisbitt
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology , University of Liverpool , Liverpool L69 3GE , U.K
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Abstract
BACKGROUND Adverse drug reactions (ADR) are common and may present clinically and histologically in a very heterogeneous manner. The pathophysiological understanding about causal immunological and non-immunological events has developed significantly over the past years. Skin and mucosa are commonly affected and are prone for histopathological examination. Certain groups of drugs such as immune checkpoint inhibitors may cause specific adverse reactions. OBJECTIVES To provide a comprehensive overview of the complex immunological events and the most common dermatohistopathological findings of cutaneous adverse drug reactions. MATERIAL AND METHODS Review of the literature (PubMed), own study data and pictures obtained via routine diagnostics at the University of Bonn. RESULTS AND DISCUSSION Drugs may induce a wide range of skin reactions displaying a diversity of cutaneous inflammatory patterns. Histopathological clues for drug eruptions may be: eosinophils, lichenoid infiltrate and isolated keratinocytic apoptosis; a thorough medical history and correlation of clinical findings and dermatohistopathology are most important. Knowledge of typical adverse reactions to checkpoint inhibitors and their management is of great clinical interest as their use is rising steadily.
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Pichler WJ. Immune pathomechanism and classification of drug hypersensitivity. Allergy 2019; 74:1457-1471. [PMID: 30843233 DOI: 10.1111/all.13765] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 01/12/2019] [Accepted: 01/29/2019] [Indexed: 12/17/2022]
Abstract
Drug hypersensitivity reactions (DHR) are based on distinct mechanisms and are clinically heterogeneous. Taking into account that also off-target activities of drugs may lead to stimulations of immune or inflammatory cells, three forms of DHR were discriminated: the allergic-immune mechanism relies on the covalent binding of drugs/chemicals to proteins, which thereby form new antigens, to which a humoural and/or cellular immune response can develop. In IgE-mediated drug allergies, a possible tolerance mechanism to the drug during sensitization and the need of a covalent hapten-carrier link for initiation, but not for elicitation of IgE-mediated reactions is discussed. The p-i ("pharmacological interaction with immune receptor") concept represents an off-target activity of drugs with immune receptors (HLA or TCR), which can result in unorthodox, alloimmune-like stimulations of T cells. Some of these p-i stimulations occur only in carriers of certain HLA alleles and can result in clinically severe reactions. The third form of DHR ("pseudo-allergy") is represented by drug interactions with receptors or enzymes of inflammatory cells, which may lead to their direct activation or enhanced levels of inflammatory products. Specific IgE or T cells are not involved. This classification is based on the action of drugs and is clinically useful, as it can explain differences in sensitizations, unusual clinical symptoms, dependence on drug concentrations, predictability and immunological and pharmacological cross-reactivities in DHR.
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Sharma A, Saito Y, Hung SI, Naisbitt D, Uetrecht J, Bussiere J. The skin as a metabolic and immune-competent organ: Implications for drug-induced skin rash. J Immunotoxicol 2018; 16:1-12. [PMID: 30318948 DOI: 10.1080/1547691x.2018.1514444] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Current advances in the study of cutaneous adverse drug reactions can be attributed to the recent understanding that the skin is both a metabolically and immunologically competent organ. The ability of the skin to serve as a protective barrier with limited drug biotransformation ability, yet highly active immune function, has provided insights into its biological capability. While the immune response of the skin to drugs is vastly different from that of the liver due to evolutionary conditioning, it frequently occurs in response to various drug classes and manifests as a spectrum of hypersensitivity reactions. The skin is a common site of adverse and idiosyncratic drug reactions; drug-specific T-cells, as well as involvement of an innate immune response, appear to be key mechanistic drivers in such scenarios. Association of other factors such as human leukocyte antigen (HLA) polymorphisms may play a significant role for particular drugs. This review aims to integrate emerging findings into proposed mechanisms of drug metabolism and immunity in the skin that are likely responsible for rashes and other local allergic responses. These unique biological aspects of the skin, and their translation into implications for drug development and the use of animal models, will be discussed.
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Affiliation(s)
- Amy Sharma
- Amgen Research, Thousand Oaks, CA, USA.,Genentech Inc., South San Francisco, CA, USA
| | - Yoshiro Saito
- Division of Medicinal Safety Science, National Institute of Health Sciences, Tokyo, Japan
| | - Shuen-Iu Hung
- Department and Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | | | - Jack Uetrecht
- Faculty of Pharmacy and Medicine, University of Toronto, Toronto, Canada
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Azoury ME, Filì L, Bechara R, Scornet N, de Chaisemartin L, Weaver RJ, Claude N, Maillere B, Parronchi P, Joseph D, Pallardy M. Identification of T-cell epitopes from benzylpenicillin conjugated to human serum albumin and implication in penicillin allergy. Allergy 2018; 73:1662-1672. [PMID: 29355985 DOI: 10.1111/all.13418] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/13/2018] [Indexed: 01/03/2023]
Abstract
BACKGROUND There is in vitro evidence that T cells from allergic patients react to benzylpenicillin-human serum albumin (BP-HSA) bioconjugates. Our group has recently shown the existence of naïve CD4+ T cells recognizing BP-HSA in healthy donors. However, BP-haptenated peptides from HSA participating in the immunization of allergic patients have never been identified. The purpose of the present study is to identify immunodominant BP-haptenated peptides from HSA involved in immunization of patients to BP and to refine the frequency calculation of naïve CD4+ T cells recognizing BP. METHODS Co-cultures were established with CD4+ T cells from non-allergic donors and mature autologous dendritic cells (DCs) loaded with BP-HSA or BP-haptenated peptides from HSA. The CD4+ T-cell response specific for BP-HSA or for individual BP-haptenated peptides was measured using an interferon-γ (IFN-γ) ELISpot assay. The frequency of BP-specific CD4+ T cells was then calculated using the Poisson distribution. BP-HSA and BP-haptenated peptides recognition by allergic patients was evaluated on peripheral blood mononuclear cells (PBMCs) using a lymphocyte transformation test (LTT). RESULTS Results showed that BP-HSA and BP-haptenated peptides were recognized by naïve T cells from 15/16 and 13/14 tested healthy donors, respectively. Most donors responded to 3 peptides with BP covalently bound on lysines 159, 212, and 525. Two of these benzylpenicilloylated peptides (lysines 159 and 525) were also found to induce PBMCs proliferation in patients with allergic reaction to penicillins. CONCLUSION This study identifies and characterizes for the first time the BP-haptenated peptides from HSA involved in the immunization of patients to penicillins.
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Affiliation(s)
- M. E. Azoury
- Inflammation, Chimiokines et Immunopathologie; INSERM; Univ.Paris-Sud; Université Paris-Saclay; Châtenay-Malabry France
| | - L. Filì
- Department of Experimental and Clinical Medicine; University of Florence; Florence Italy
| | - R. Bechara
- Inflammation, Chimiokines et Immunopathologie; INSERM; Univ.Paris-Sud; Université Paris-Saclay; Châtenay-Malabry France
| | - N. Scornet
- BioCIS; Univ Paris-Sud; CNRS; Université Paris-Saclay; Châtenay-Malabry France
| | - L. de Chaisemartin
- Inflammation, Chimiokines et Immunopathologie; INSERM; Univ.Paris-Sud; Université Paris-Saclay; Châtenay-Malabry France
- Hopital Bichat; Laboratoire d'Immunologie; APHP; Paris France
| | - R. J. Weaver
- Institut de Recherches Internationales Servier; Suresnes France
| | - N. Claude
- Institut de Recherches Internationales Servier; Suresnes France
| | | | - P. Parronchi
- Department of Experimental and Clinical Medicine; University of Florence; Florence Italy
| | - D. Joseph
- BioCIS; Univ Paris-Sud; CNRS; Université Paris-Saclay; Châtenay-Malabry France
| | - M. Pallardy
- Inflammation, Chimiokines et Immunopathologie; INSERM; Univ.Paris-Sud; Université Paris-Saclay; Châtenay-Malabry France
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32
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Advances in hypersensitivity drug reactions. Curr Opin Allergy Clin Immunol 2018; 18:281-283. [PMID: 29889139 DOI: 10.1097/aci.0000000000000460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ye H, Nelson LJ, Gómez del Moral M, Martínez-Naves E, Cubero FJ. Dissecting the molecular pathophysiology of drug-induced liver injury. World J Gastroenterol 2018; 24:1373-1385. [PMID: 29632419 PMCID: PMC5889818 DOI: 10.3748/wjg.v24.i13.1373] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 02/16/2018] [Accepted: 02/25/2018] [Indexed: 02/06/2023] Open
Abstract
Drug-induced liver injury (DILI) has become a major topic in the field of Hepatology and Gastroenterology. DILI can be clinically divided into three phenotypes: hepatocytic, cholestatic and mixed. Although the clinical manifestations of DILI are variable and the pathogenesis complicated, recent insights using improved preclinical models, have allowed a better understanding of the mechanisms that trigger liver damage. In this review, we will discuss the pathophysiological mechanisms underlying DILI. The toxicity of the drug eventually induces hepatocellular damage through multiple molecular pathways, including direct hepatic toxicity and innate and adaptive immune responses. Drugs or their metabolites, such as the common analgesic, acetaminophen, can cause direct hepatic toxicity through accumulation of reactive oxygen species and mitochondrial dysfunction. The innate and adaptive immune responses play also a very important role in the occurrence of idiosyncratic DILI. Furthermore, we examine common forms of hepatocyte death and their association with the activation of specific signaling pathways.
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Affiliation(s)
- Hui Ye
- Department of Immunology, Ophtalmology and ORL, Complutense University School of Medicine, Madrid 28040, Spain
- 12 de Octubre Health Research Institute (imas12), Madrid 28041, Spain
| | - Leonard J Nelson
- Institute for BioEngineering (Human Liver Tissue Engineering), School of Engineering, Faraday Building, The University of Edinburgh, The Kingâs Buildings, Mayfield Road, Edinburgh EH9 3 JL, Scotland, United Kingdom
| | - Manuel Gómez del Moral
- Department of Cell Biology, Complutense University School of Medicine, Madrid 28040, Spain
| | - Eduardo Martínez-Naves
- Department of Immunology, Ophtalmology and ORL, Complutense University School of Medicine, Madrid 28040, Spain
- 12 de Octubre Health Research Institute (imas12), Madrid 28041, Spain
| | - Francisco Javier Cubero
- Department of Immunology, Ophtalmology and ORL, Complutense University School of Medicine, Madrid 28040, Spain
- 12 de Octubre Health Research Institute (imas12), Madrid 28041, Spain
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Sullivan A, Watkinson J, Waddington J, Park BK, Naisbitt DJ. Implications of HLA-allele associations for the study of type IV drug hypersensitivity reactions. Expert Opin Drug Metab Toxicol 2018; 14:261-274. [DOI: 10.1080/17425255.2018.1441285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- A. Sullivan
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, The University of Liverpool, Liverpool, England
| | - J. Watkinson
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, The University of Liverpool, Liverpool, England
| | - J. Waddington
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, The University of Liverpool, Liverpool, England
| | - B. K. Park
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, The University of Liverpool, Liverpool, England
| | - D. J. Naisbitt
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, The University of Liverpool, Liverpool, England
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Alzahrani A, Ogese M, Meng X, Waddington JC, Tailor A, Farrell J, Maggs JL, Betts C, Park BK, Naisbitt D. Dapsone and Nitroso Dapsone Activation of Naı̈ve T-Cells from Healthy Donors. Chem Res Toxicol 2017; 30:2174-2186. [PMID: 29045131 DOI: 10.1021/acs.chemrestox.7b00263] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Dapsone (DDS) causes hypersensitivity reactions in 0.5-3.6% of patients. Although clinical diagnosis is indicative of a hypersensitivity reaction, studies have not been performed to define whether dapsone or a metabolite activates specific T-cells. Thus, the aims of this study were to explore the immunogenicity DDS and nitroso DDS (DDS-NO) using peripheral blood mononuclear cells from healthy donors and splenocytes from mice and generate human T-cell clones to characterize mechanisms of T-cell activation. DDS-NO was synthesized from DDS-hydroxylamine and shown to bind to the thiol group of glutathione and human and mouse albumin through sulfonamide and N-hydroxyl sulphonamide adducts. Naïve T-cell priming to DDS and DDS-NO was successful in three human donors. DDS-specific CD4+ T-cell clones were stimulated to proliferate in response to drug via a MHC class II restricted direct binding interaction. Cross reactivity with DDS-NO, DDS-analogues, and sulfonamides was not observed. DDS-NO clones were CD4+ and CD8+, MHC class II and I restricted, respectively, and activated via a pathway dependent on covalent binding and antigen processing. DDS and DDS-NO-specific clones secreted a mixture of Th1 and Th2 cytokines, but not granzyme-B. Splenocytes from mice immunized with DDS-NO were stimulated to proliferate in vitro with the nitroso metabolite, but not DDS. In contrast, immunization with DDS did not activate T-cells. These data show that DDS- and DDS-NO-specific T-cell responses are readily detectable.
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Affiliation(s)
- Abdulaziz Alzahrani
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool , Liverpool L69 3GE, United Kingdom
| | - Monday Ogese
- Pathology Sciences, Drug Safety and Metabolism, AstraZeneca R&D , Darwin Building 310, Cambridge Science Park, Milton Rd, Cambridge CB4 0WG, United Kingdom
| | - Xiaoli Meng
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool , Liverpool L69 3GE, United Kingdom
| | - James C Waddington
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool , Liverpool L69 3GE, United Kingdom
| | - Arun Tailor
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool , Liverpool L69 3GE, United Kingdom
| | - John Farrell
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool , Liverpool L69 3GE, United Kingdom
| | - James L Maggs
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool , Liverpool L69 3GE, United Kingdom
| | - Catherine Betts
- Pathology Sciences, Drug Safety and Metabolism, AstraZeneca R&D , Darwin Building 310, Cambridge Science Park, Milton Rd, Cambridge CB4 0WG, United Kingdom
| | - B Kevin Park
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool , Liverpool L69 3GE, United Kingdom
| | - Dean Naisbitt
- MRC Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, University of Liverpool , Liverpool L69 3GE, United Kingdom
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36
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Negrini S, Becquemont L. HLA-associated drug hypersensitivity and the prediction of adverse drug reactions. Pharmacogenomics 2017; 18:1441-1457. [DOI: 10.2217/pgs-2017-0090] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Adverse drug reactions are an important cause of morbidity and mortality and constitute the leading reason of drug withdrawal from the market. Besides classical reactions that are related to pharmacologic activity of the drug, some reactions are unpredictable, not dose dependent, and seem to occur in genetically predisposed individuals. The majority of this reaction is immunologically driven and they are referred to as hypersensitivity reactions. A growing number of studies provided evidences that specific HLA alleles increase the risk of developing hypersensitivity drug reactions. In this context, drug hypersensitivities that have more robust pharmacogenetic data include abacavir hypersensitivity syndrome and severe cutaneous adverse reactions induced by allopurinol and carbamazepine.
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Affiliation(s)
- Simone Negrini
- Department of Internal Medicine, Clinical Immunology Unit, University of Genoa, Genoa, Italy
- Center of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
| | - Laurent Becquemont
- Department of Pharmacology, Hôpital Bicêtre, APHP, Le Kremlin Bicêtre, France
- Faculty of Medicine, University Paris Sud; CESP/INSERM U1018 (Centre de Recherche en Épidémiologie et Santé des Populations), France
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37
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Illing PT, Purcell AW, McCluskey J. The role of HLA genes in pharmacogenomics: unravelling HLA associated adverse drug reactions. Immunogenetics 2017; 69:617-630. [DOI: 10.1007/s00251-017-1007-5] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 05/29/2017] [Indexed: 12/17/2022]
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38
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Meng X, Al-Attar Z, Yaseen FS, Jenkins R, Earnshaw C, Whitaker P, Peckham D, French NS, Naisbitt DJ, Park BK. Definition of the Nature and Hapten Threshold of the β-Lactam Antigen Required for T Cell Activation In Vitro and in Patients. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2017; 198:4217-4227. [PMID: 28438900 PMCID: PMC5444528 DOI: 10.4049/jimmunol.1700209] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 03/29/2017] [Indexed: 11/19/2022]
Abstract
Covalent modification of protein by drugs may disrupt self-tolerance, leading to lymphocyte activation. Until now, determination of the threshold required for this process has not been possible. Therefore, we performed quantitative mass spectrometric analyses to define the epitopes formed in tolerant and hypersensitive patients taking the β-lactam antibiotic piperacillin and the threshold required for T cell activation. A hydrolyzed piperacillin hapten was detected on four lysine residues of human serum albumin (HSA) isolated from tolerant patients. The level of modified Lys541 ranged from 2.6 to 4.8%. Analysis of plasma from hypersensitive patients revealed the same pattern and levels of modification 1-10 d after the commencement of therapy. Piperacillin-responsive skin-homing CD4+ clones expressing an array of Vβ receptors were activated in a dose-, time-, and processing-dependent manner; analysis of incubation medium revealed that 2.6% of Lys541 in HSA was modified when T cells were activated. Piperacillin-HSA conjugates that had levels and epitopes identical to those detected in patients were shown to selectively stimulate additional CD4+ clones, which expressed a more restricted Vβ repertoire. To conclude, the levels of piperacillin-HSA modification that activated T cells are equivalent to the ones formed in hypersensitive and tolerant patients, which indicates that threshold levels of drug Ag are formed in all patients. Thus, the propensity to develop hypersensitivity is dependent on other factors, such as the presence of T cells within an individual's repertoire that can be activated with the β-lactam hapten and/or an imbalance in immune regulation.
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Affiliation(s)
- Xiaoli Meng
- Medical Research Council Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, The University of Liverpool, Liverpool L69 3GE, United Kingdom; and
| | - Zaid Al-Attar
- Medical Research Council Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, The University of Liverpool, Liverpool L69 3GE, United Kingdom; and
| | - Fiazia S Yaseen
- Medical Research Council Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, The University of Liverpool, Liverpool L69 3GE, United Kingdom; and
| | - Rosalind Jenkins
- Medical Research Council Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, The University of Liverpool, Liverpool L69 3GE, United Kingdom; and
| | - Caroline Earnshaw
- Medical Research Council Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, The University of Liverpool, Liverpool L69 3GE, United Kingdom; and
| | - Paul Whitaker
- Regional Adult Cystic Fibrosis Unit, St James's Hospital, Leeds LS9 7TF, United Kingdom
| | - Daniel Peckham
- Regional Adult Cystic Fibrosis Unit, St James's Hospital, Leeds LS9 7TF, United Kingdom
| | - Neil S French
- Medical Research Council Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, The University of Liverpool, Liverpool L69 3GE, United Kingdom; and
| | - Dean J Naisbitt
- Medical Research Council Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, The University of Liverpool, Liverpool L69 3GE, United Kingdom; and
| | - B Kevin Park
- Medical Research Council Centre for Drug Safety Science, Department of Molecular and Clinical Pharmacology, The University of Liverpool, Liverpool L69 3GE, United Kingdom; and
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39
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Leeming MG, Donald WA, O'Hair RAJ. Nontargeted Identification of Reactive Metabolite Protein Adducts. Anal Chem 2017; 89:5748-5756. [PMID: 28481086 DOI: 10.1021/acs.analchem.6b04604] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Metabolic bioactivation of many different chemicals results in the formation of highly reactive compounds (chemically reactive metabolites, CRMs) that can lead to toxicity via binding to macromolecular targets (e.g., proteins or DNA). There is a need to develop robust, rapid, and nontargeted analytical techniques to determine the identity of the protein targets of CRMs and their sites of modification. Here, we introduce a nontargeted methodology capable of determining both the identity of a CRM formed from an administered compound as well as the protein targets modified by the reactive metabolite in a single experiment without prior information. Acetaminophen (N-acetyl-p-aminophenol, APAP) and 13C6-APAP were incubated with rat liver microsomes, which are known to bioactivate APAP to the reactive metabolite N-acetyl-p-benzoquinone imine (NAPQI). Global tryptic digestion followed by liquid chromatographic/mass spectrometric (LC/MS) analysis was used to locate "twin" ion peaks of peptides adducted by NAPQI and for shotgun proteomics via tandem mass spectrometry (MS/MS). By the development of blended data analytics software called Xenophile, the identity of the amino acid residue that was adducted can be established, which eliminates the need for specific parametrization of protein database search algorithms. This combination of experimental design and data analysis software allows the identity of a CRM, the protein target, and the amino acid residues that are modified to be rapidly established directly from experimental data. Xenophile is freely available from https://github.com/mgleeming/Xenophile .
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Affiliation(s)
- Michael G Leeming
- School of Chemistry and Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne , Melbourne, Victoria 3010, Australia
| | - William A Donald
- School of Chemistry, University of New South Wales , Sydney, New South Wales 2052, Australia
| | - Richard A J O'Hair
- School of Chemistry and Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne , Melbourne, Victoria 3010, Australia
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40
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Garon SL, Pavlos RK, White KD, Brown NJ, Stone CA, Phillips EJ. Pharmacogenomics of off-target adverse drug reactions. Br J Clin Pharmacol 2017; 83:1896-1911. [PMID: 28345177 DOI: 10.1111/bcp.13294] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 03/14/2017] [Accepted: 03/19/2017] [Indexed: 12/15/2022] Open
Abstract
Off-target adverse drug reactions (ADRs) are associated with significant morbidity and costs to the healthcare system, and their occurrence is not predictable based on the known pharmacological action of the drug's therapeutic effect. Off-target ADRs may or may not be associated with immunological memory, although they can manifest with a variety of shared clinical features, including maculopapular exanthema, severe cutaneous adverse reactions (SCARs), angioedema, pruritus and bronchospasm. Discovery of specific genes associated with a particular ADR phenotype is a foundational component of clinical translation into screening programmes for their prevention. In this review, genetic associations of off-target drug-induced ADRs that have a clinical phenotype suggestive of an immunologically mediated process and their mechanisms are highlighted. A significant proportion of these reactions lack immunological memory and current data are informative for these ADRs with regard to disease pathophysiology, therapeutic targets and biomarkers which may identify patients at greatest risk. Although many serious delayed immune-mediated (IM)-ADRs show strong human leukocyte antigen associations, only a small subset have successfully been implemented in screening programmes. More recently, other factors, such as drug metabolism, have been shown to contribute to the risk of the IM-ADR. In the future, pharmacogenomic targets and an understanding of how they interact with drugs to cause ADRs will be applied to drug design and preclinical testing, and this will allow selection of optimal therapy to improve patient safety.
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Affiliation(s)
- Sarah L Garon
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Rebecca K Pavlos
- Institute for Immunology & Infectious Diseases, Murdoch University, Murdoch, WA, 6150, Australia
| | - Katie D White
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Nancy J Brown
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Cosby A Stone
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Elizabeth J Phillips
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Institute for Immunology & Infectious Diseases, Murdoch University, Murdoch, WA, 6150, Australia.,Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
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41
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Pharmacogenetics of hypersensitivity drug reactions. Therapie 2017; 72:231-243. [DOI: 10.1016/j.therap.2016.12.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 09/02/2016] [Indexed: 12/12/2022]
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42
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Pichler WJ, Hausmann O. Classification of Drug Hypersensitivity into Allergic, p-i, and Pseudo-Allergic Forms. Int Arch Allergy Immunol 2016; 171:166-179. [PMID: 27960170 DOI: 10.1159/000453265] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Drug hypersensitivity reactions (DHR) are clinically and functionally heterogeneous. Different subclassifications based on timing of symptom appearance or type of immune mechanism have been proposed. Here, we show that the mode of action of drugs leading to immune/inflammatory cell stimulation is a further decisive factor in understanding and managing DHR. Three mechanisms can be delineated: (a) some drugs have or gain the ability to bind covalently to proteins, form new antigens, and thus elicit immune reactions to hapten-carrier complexes (allergic/immune reaction); (b) a substantial part of immune-mediated DHR is due to a typical off-target activity of drugs on immune receptors like HLA and TCR (pharmacological interaction with immune receptors, p-i reactions); such p-i reactions are linked to severe DHR; and (c) symptoms of DHR can also appear if the drug stimulates or inhibits receptors or enzymes of inflammatory cells (pseudo-allergy). These three distinct ways of stimulations of immune or inflammatory cells differ substantially in clinical manifestations, time of appearance, dose dependence, predictability, and cross-reactivity, and thus need to be differentiated.
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43
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Cho T, Uetrecht J. How Reactive Metabolites Induce an Immune Response That Sometimes Leads to an Idiosyncratic Drug Reaction. Chem Res Toxicol 2016; 30:295-314. [DOI: 10.1021/acs.chemrestox.6b00357] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Tiffany Cho
- Faculty
of Pharmacy, University of Toronto, Toronto, Ontario, Canada M5S 3M2
| | - Jack Uetrecht
- Faculty
of Pharmacy, University of Toronto, Toronto, Ontario, Canada M5S 3M2
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44
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Schnyder B, Brockow K. Pathogenesis of drug allergy--current concepts and recent insights. Clin Exp Allergy 2016; 45:1376-83. [PMID: 26172398 DOI: 10.1111/cea.12591] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Drug hypersensitivity reactions (DHRs) may be caused by immunologic and non-immunologic mechanisms. According to the World Allergy Organization, drug allergy (DA) encompasses the subgroup of immunologic DHRs which are mediated either by specific antibodies or specific T lymphocytes. Due to the immunologic memory, DA reactions bear an increased risk for dramatically enhanced reactions on re-exposure. Some current concepts of DA were described decades ago. Drug allergies to soluble macromolecular protein drugs such as biopharmaceuticals are predominantly T cell-dependent drug-specific antibody responses leading to IgE-or IgG-mediated allergy. However, most drugs are too small to be directly recognized by specific B and T cells. Immune reactions to low-molecular drugs have been explained by the hapten model: a hapten drug can bind covalently to soluble autologous proteins (e.g. serum albumin). Resulting compounds may then be recognized by matching B cell receptors (BCRs) and induce a specific T cell-dependent IgE-or IgG-antibody production. Drug haptens may bind to extra- or intracellular proteins, which are processed and presented by various professional antigen-presenting cells (APCs). Depending on the APC, they may induce not only specific antibody production, but also non-immediate T cell-mediated DA. More recently, a supplementary effector mechanism for non-immediate DA to low-molecular drugs has been described, namely the pharmacological interaction of native low-molecular drugs with immune receptors (p-i-concept). Low-molecular drugs may directly and reversibly attach to immune receptors. These non-covalent interactions may modify the affinity between autologous major histocompatibility complex (MHC), presented peptides and specifically primed T cell receptors (TCRs) and thereby stimulate T cells. A special type of p-i-reaction has been recently described between the antiviral drug abacavir and the F pocket of HLA-B*57:01. This interaction causes an alteration of the MHC-presented self-peptide repertoire and may consecutively lead to a kind of auto-reactivity. Such types of reactions can explain the strong MHC-HLA associations which have been found for some T cell-mediated DHRs.
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Affiliation(s)
- B Schnyder
- Clinic for Rheumatology and Clinical Immunology / Allergology, Inselspital, Bern, Switzerland
| | - K Brockow
- Department of Dermatology and Allergology Biederstein, Technische Universität München, Munich, Germany
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45
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Yun J, Cai F, Lee FJ, Pichler WJ. T-cell-mediated drug hypersensitivity: immune mechanisms and their clinical relevance. Asia Pac Allergy 2016; 6:77-89. [PMID: 27141480 PMCID: PMC4850339 DOI: 10.5415/apallergy.2016.6.2.77] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 04/20/2016] [Indexed: 12/27/2022] Open
Abstract
T-cell-mediated drug hypersensitivity represents a significant proportion of immune mediated drug hypersensitivity reactions. In the recent years, there has been an increase in understanding the immune mechanisms behind T-cell-mediated drug hypersensitivity. According to hapten mechanism, drug specific T-cell response is stimulated by drug-protein conjugate presented on major histocompatibility complex (MHC) as it is presented as a new antigenic determinant. On the other hand, p-i concept suggests that a drug can stimulate T cells via noncovalent direct interaction with T-cell receptor and/or peptide-MHC. The drug binding site is quite variable and this leads to several different mechanisms within p-i concept. Altered peptide repertoire can be regarded as an 'atypical' subset of p-i concept since the mode of the drug binding and the binding site are essentially identical to p-i concept. However, the intracellular binding of abacavir to HLA-B(*)57:01 additionally results in alteration in peptide repertoire. Furthermore the T-cell response to altered peptide repertoire model is only shown for abacavir and HLA-B(*)57:01 and therefore it may not be generalised to other drug hypersensitivity. Danger hypothesis has been postulated to play an important role in drug hypersensitivity by providing signal 2 but its experimental data is lacking at this point in time. Furthermore, the recently described allo-immune response suggests that danger signal may be unnecessary. Finally, in view of these new understanding, the classification and the definition of type B adverse drug reaction should be revised.
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Affiliation(s)
- James Yun
- Department of Clinical Immunology and Allergy, Royal North Shore Hospital, St Leonards, NSW 2065, Australia
| | - Fenfen Cai
- Department of Clinical Immunology and Allergy, Royal North Shore Hospital, St Leonards, NSW 2065, Australia
| | - Frederick J Lee
- Department of Clinical Immunology, Royal Prince Alfred Hospital, Camperdown, NSW 2050, Australia
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46
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Thompson RA, Isin EM, Ogese MO, Mettetal JT, Williams DP. Reactive Metabolites: Current and Emerging Risk and Hazard Assessments. Chem Res Toxicol 2016; 29:505-33. [DOI: 10.1021/acs.chemrestox.5b00410] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Richard A. Thompson
- DMPK, Respiratory, Inflammation & Autoimmunity iMed, AstraZeneca R&D, 431 83 Mölndal, Sweden
| | - Emre M. Isin
- DMPK, Cardiovascular & Metabolic Diseases iMed, AstraZeneca R&D, 431 83 Mölndal, Sweden
| | - Monday O. Ogese
- Translational Safety, Drug Safety and Metabolism, AstraZeneca R&D, Darwin Building 310, Cambridge Science Park, Milton Rd, Cambridge CB4 0FZ, United Kingdom
| | - Jerome T. Mettetal
- Translational Safety, Drug Safety and Metabolism, AstraZeneca R&D, 35 Gatehouse Dr, Waltham, Massachusetts 02451, United States
| | - Dominic P. Williams
- Translational Safety, Drug Safety and Metabolism, AstraZeneca R&D, Darwin Building 310, Cambridge Science Park, Milton Rd, Cambridge CB4 0FZ, United Kingdom
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47
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Kim SH, Naisbitt DJ. Update on Advances in Research on Idiosyncratic Drug-Induced Liver Injury. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2016. [PMID: 26540496 DOI: 10.4168/aair.2015.8.1.3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Drug-induced liver injury (DILI) is a major concern for public health, as well as for drug development in the pharmaceutical industry, since it can cause liver failure and lead to drug withdrawal from the market and black box warnings. Thus, it is important to identify biomarkers for early prediction to increase our understanding of mechanisms underlying DILI that will ultimately aid in the exploration of novel therapeutic strategies to prevent or manage DILI. DILI can be subdivided into 'intrinsic' and 'idiosyncratic' categories, although the validity of this classification remains controversial. Idiosyncratic DILI occurs in a minority of susceptible individuals with a prolonged latency, while intrinsic DILI results from drug-induced direct hepatotoxicity over the course of a few days. The rare occurrence of idiosyncratic DILI requires multicenter collaborative investigations and phenotype standardization. Recent progress in research on idiosyncratic DILI is based on key developments in 3 areas: (1) newly developed high-throughput genotyping across the whole genome allowing for the identification of genetic susceptibility markers, (2) new mechanistic concepts on the pathogenesis of DILI revealing a key role of drug-responsive T lymphocytes in the immunological response, and (3) broad multidisciplinary approaches using different platform "-omics" technologies that have identified novel biomarkers for the prediction of DILI. An association of a specific human leukocyte antigen (HLA) allele with DILI has been reported for several drugs. HLA-restricted T-cell immune responses have also been investigated using lymphocytes and T-cell clones isolated from patients. A microRNA, miR-122, has been discovered as a promising biomarker for the early prediction of DILI. In this review, we summarize recent advances in research on idiosyncratic DILI with an understanding of the key role of adaptive immune systems.
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Affiliation(s)
- Seung Hyun Kim
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea
| | - Dean J Naisbitt
- MRC Centre for Drug Safety Science, Department of Clinical and Molecular Pharmacology, Sherrington Building, Ashton Street, The University of Liverpool, Liverpool, L69 3 GE, England.
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48
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Pichler WJ, Adam J, Watkins S, Wuillemin N, Yun J, Yerly D. Drug Hypersensitivity: How Drugs Stimulate T Cells via Pharmacological Interaction with Immune Receptors. Int Arch Allergy Immunol 2015; 168:13-24. [DOI: 10.1159/000441280] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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49
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Du T, Yang L, Luo H, Zhou P, Mei H, Xuan J, Xing Q, Ning B, Mendrick DL, Shi L. HLADR: a database system for enhancing the discovery of biomarkers for predicting human leukocyte antigen-mediated idiosyncratic adverse drug reactions. Biomark Med 2015; 9:1079-93. [DOI: 10.2217/bmm.15.98] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Aim: To establish a database for the associations between idiosyncratic drug reactions (IDRs) and human leukocyte antigens (HLAs) and to systematically assess the characteristics of the drug–HLA associations. Materials & methods: Electronic databases were searched to extensively identify drug–HLA association studies from 1966 to present. Results: A drug-HLA-IDR database, HLADR, was created. The drug–HLA relationship network clearly reflected an ethnicity dependency of the associations. The positive predictive values and the negative predictive values demonstrated that other potential factors may also regulate the occurrence of HLA-specific IDRs. Conclusions: Constructing studies with samples from homogeneous ethnic groups and identifying cofactors that affect negative predictive values and positive predictive values will become necessary to enhance the predictability of HLA biomarkers for future research on IDRs.
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Affiliation(s)
- Tingting Du
- Center for Pharmacogenomics & State Key Laboratory of Genetic Engineering, School of Life Sciences & School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Lun Yang
- National Center for Toxicological Research, US Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Heng Luo
- National Center for Toxicological Research, US Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
- University of Arkansas at Little Rock/University of Arkansas for Medical Sciences Joint Bioinformatics Graduate Program, 2801 South University Avenue, Little Rock, AR 72204, USA
| | - Peng Zhou
- National Center for Toxicological Research, US Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Hu Mei
- National Center for Toxicological Research, US Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Jiekun Xuan
- Center for Pharmacogenomics & State Key Laboratory of Genetic Engineering, School of Life Sciences & School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
- National Center for Toxicological Research, US Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Qinghe Xing
- Institutes of Biomedical Science, Fudan University, 138 Shanghai Medical School Road, Shanghai 200032, China
| | - Baitang Ning
- National Center for Toxicological Research, US Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Donna L Mendrick
- National Center for Toxicological Research, US Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
| | - Leming Shi
- Center for Pharmacogenomics & State Key Laboratory of Genetic Engineering, School of Life Sciences & School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
- National Center for Toxicological Research, US Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA
- University of Arkansas at Little Rock/University of Arkansas for Medical Sciences Joint Bioinformatics Graduate Program, 2801 South University Avenue, Little Rock, AR 72204, USA
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50
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White KD, Chung WH, Hung SI, Mallal S, Phillips EJ. Evolving models of the immunopathogenesis of T cell-mediated drug allergy: The role of host, pathogens, and drug response. J Allergy Clin Immunol 2015; 136:219-34; quiz 235. [PMID: 26254049 DOI: 10.1016/j.jaci.2015.05.050] [Citation(s) in RCA: 166] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 05/11/2015] [Accepted: 05/12/2015] [Indexed: 12/12/2022]
Abstract
Immune-mediated (IM) adverse drug reactions (ADRs) are an underrecognized source of preventable morbidity, mortality, and cost. Increasingly, genetic variation in the HLA loci is associated with risk of severe reactions, highlighting the importance of T-cell immune responses in the mechanisms of both B cell-mediated and primary T cell-mediated IM-ADRs. In this review we summarize the role of host genetics, microbes, and drugs in IM-ADR development; expand on the existing models of IM-ADR pathogenesis to address multiple unexplained observations; discuss the implications of this work in clinical practice today; and describe future applications for preclinical drug toxicity screening, drug design, and development.
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Affiliation(s)
- Katie D White
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tenn
| | - Wen-Hung Chung
- Department of Dermatology, Chang Gung Memorial Hospital, Keelung, Taiwan; Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Shuen-Iu Hung
- Program in Molecular Medicine, Institute of Pharmacology, School of Medicine, Infection and Immunity Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Simon Mallal
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tenn; Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Australia
| | - Elizabeth J Phillips
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tenn; Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Australia.
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