PMID- 23046128 OWN - NLM STAT- MEDLINE DCOM- 20130225 LR - 20121010 IS - 1600-065X (Electronic) IS - 0105-2896 (Linking) VI - 250 IP - 1 DP - 2012 Nov TI - The structural basis of HLA-associated drug hypersensitivity syndromes. PG - 158-66 LID - 10.1111/j.1600-065X.2012.01163.x [doi] AB - Recent data suggest alternative mechanisms that promote human leukocyte antigen (HLA)-associated drug syndromes. Hypersensitive responses have been attributed to drug interactions with HLA molecules, peptides presented by HLA molecules and T-cell antigen receptors. Definition of an increasing number of HLA-associated drug syndromes suggests that polymorphism in the antigen-binding cleft residues influence recognition of specific drugs. Recent data demonstrate that small molecule drugs bind within the antigen-binding cleft of HLA in a manner that alters the repertoire of HLA-bound peptide ligands. This drug recognition mechanism permits presentation of self-peptides to which the host has not been tolerized. This altered repertoire mechanism is analogous to massive polyclonal T-cell responses occurring in mismatched HLA organ transplantation in which the drug in effect creates a novel HLA allele. Alteration of the self-peptide repertoire by HLA-binding small molecules may be the mechanistic basis for a diverse set of deleterious T-cell responses since the antigen-binding cleft has structural features that are compatible with binding drug-like small molecules. Small molecule drugs that bind elements of the trimolecular complex (T-cell receptor, peptide, and HLA) may cause short- and long-term adverse effects by a diverse set of mechanisms. CI - (c) 2012 John Wiley & Sons A/S. FAU - Pompeu, Yuri A AU - Pompeu YA AD - Department of Chemistry, University of Florida, Gainesville, USA. FAU - Stewart, Jon D AU - Stewart JD FAU - Mallal, Simon AU - Mallal S FAU - Phillips, Elizabeth AU - Phillips E FAU - Peters, Bjoern AU - Peters B FAU - Ostrov, David A AU - Ostrov DA LA - eng PT - Journal Article PT - Review PL - England TA - Immunol Rev JT - Immunological reviews JID - 7702118 RN - 0 (Autoantigens) RN - 0 (HLA Antigens) RN - 0 (Ligands) RN - 0 (Peptides) RN - 0 (Receptors, Antigen, T-Cell) RN - 0 (Xenobiotics) SB - IM MH - Antigen-Presenting Cells/cytology/immunology/metabolism MH - Autoantigens/*chemistry/immunology/metabolism MH - Binding Sites MH - Drug Hypersensitivity/etiology/*immunology MH - HLA Antigens/*chemistry/immunology/metabolism MH - Humans MH - Ligands MH - Models, Molecular MH - Peptides/*chemistry/immunology/metabolism MH - Protein Binding MH - Protein Conformation MH - Receptors, Antigen, T-Cell/*chemistry/immunology/metabolism MH - Syndrome MH - T-Lymphocytes/cytology/immunology/metabolism MH - Xenobiotics/adverse effects/*chemistry EDAT- 2012/10/11 06:00 MHDA- 2013/02/26 06:00 CRDT- 2012/10/11 06:00 PHST- 2012/10/11 06:00 [entrez] PHST- 2012/10/11 06:00 [pubmed] PHST- 2013/02/26 06:00 [medline] AID - 10.1111/j.1600-065X.2012.01163.x [doi] PST - ppublish SO - Immunol Rev. 2012 Nov;250(1):158-66. doi: 10.1111/j.1600-065X.2012.01163.x.