2017
Passive therapy with humanized anti-staphylococcal enterotoxin B antibodies attenuates systemic inflammatory response and protects from lethal pneumonia caused by staphylococcal enterotoxin B-producing Staphylococcus aureus
Karau M, Tilahun M, Krogman A, Osborne B, Goldsby R, David C, Mandrekar J, Patel R, Rajagopalan G. Passive therapy with humanized anti-staphylococcal enterotoxin B antibodies attenuates systemic inflammatory response and protects from lethal pneumonia caused by staphylococcal enterotoxin B-producing Staphylococcus aureus. Virulence 2017, 8: 1148-1159. PMID: 27925510, PMCID: PMC5711449, DOI: 10.1080/21505594.2016.1267894.Peer-Reviewed Original ResearchConceptsHLA-DR3 transgenic miceSystemic inflammatory responseOnset of infectionLethal pneumoniaTransgenic miceInflammatory responseB antibodiesHLA class II transgenic miceStrong systemic immune responsePolyclonal human IgGII transgenic miceRobust T cell activationSystemic immune responsesPro-inflammatory cytokinesLethal toxic shockAnti-toxin antibodiesToxigenic Staphylococcus aureusHuman IgGS. aureusStaphylococcus aureusT cell activationAnti-SEB antibodiesStaphylococcal enterotoxin BConventional mouse strainsProphylactic administration
2012
The impact of tacrolimus on the immunopathogenesis of staphylococcal enterotoxin-induced systemic inflammatory response syndrome and pneumonia
Tilahun A, Karau M, Clark C, Patel R, Rajagopalan G. The impact of tacrolimus on the immunopathogenesis of staphylococcal enterotoxin-induced systemic inflammatory response syndrome and pneumonia. Microbes And Infection 2012, 14: 528-536. PMID: 22273732, DOI: 10.1016/j.micinf.2012.01.001.Peer-Reviewed Original ResearchConceptsStaphylococcal superantigensT cell activationChemokine levelsCell activationSystemic inflammatory response syndromeDR3 transgenic miceEfficacy of tacrolimusInflammatory response syndromeHuman leukocyte antigenImpact of tacrolimusPotent immunosuppressive agentPost-exposure treatmentT cell proliferationS. aureus strainsSystemic cytokinesGut dysfunctionSerum cytokinesResponse syndromeImmunosuppressive agentsLeukocyte antigenSystemic pathologyTacrolimusLethal pneumoniaPneumoniaTransgenic mice
2011
HLA-DR3 restricted T cell epitope mimicry in induction of autoimmune response to lupus-associated antigen SmD
Deshmukh U, Sim D, Dai C, Kannapell C, Gaskin F, Rajagopalan G, David C, Fu S. HLA-DR3 restricted T cell epitope mimicry in induction of autoimmune response to lupus-associated antigen SmD. Journal Of Autoimmunity 2011, 37: 254-262. PMID: 21868195, PMCID: PMC3372418, DOI: 10.1016/j.jaut.2011.07.002.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntibody FormationAutoantibodiesAutoantigensAutoimmunityEpitopes, T-LymphocyteFemaleHLA-DR3 AntigenHumansHybridomasImmunizationLupus Erythematosus, SystemicLymphocyte ActivationMiceMice, TransgenicMolecular MimicryPeptidesProtein BindingSnRNP Core ProteinsStreptococcus agalactiaeT-LymphocytesVibrio choleraeConceptsSystemic lupus erythematosusHLA-DR3 transgenic miceT cell epitopesHLA-DR3T cellsEpitope levelCell epitopesTransgenic miceMolecular mimicryPathogenesis of SLET cell epitope mimicryAutoreactive T cell clonesT hybridomasHLA-DR3 miceMicrobial peptidesAutoreactive T cellsProduction of autoantibodiesT cell responsesT cell clonesLupus erythematosusLupus autoantigensAutoimmune responseAutoimmune disordersImmunized miceEpitope mimicry
2007
Evaluating the role of HLA‐DQ polymorphisms on immune response to bacterial superantigens using transgenic mice
Rajagopalan G, Polich G, Sen M, Singh M, Epstein B, Lytle A, Rouse M, Patel R, David C. Evaluating the role of HLA‐DQ polymorphisms on immune response to bacterial superantigens using transgenic mice. HLA 2007, 71: 135-145. PMID: 18086265, DOI: 10.1111/j.1399-0039.2007.00986.x.Peer-Reviewed Original ResearchConceptsStreptococcal mitogenic exotoxin ZClass II moleculesHLA class II moleculesHLA-DQ6HLA-DQ8Transgenic miceBacterial superantigensImmune responseHLA class II transgenic miceHLA-DQ8 transgenic miceHuman leukocyte antigen (HLA) class II moleculesHLA class II allelesToxic shock syndrome toxin-1II transgenic miceSimilar clinical outcomesHLA-DQ polymorphismStreptococcal pyrogenic exotoxin AHLA class IIVivo immune responseHLA class II polymorphismClass II allelesPyrogenic exotoxin ASyndrome toxin-1Superantigen-mediated diseasesClass II polymorphism
2006
Acute systemic immune activation following vaginal exposure to staphylococcal enterotoxin B—Implications for menstrual shock
Rajagopalan G, Smart M, Murali N, Patel R, David C. Acute systemic immune activation following vaginal exposure to staphylococcal enterotoxin B—Implications for menstrual shock. Journal Of Reproductive Immunology 2006, 73: 51-59. PMID: 17070600, DOI: 10.1016/j.jri.2006.06.007.Peer-Reviewed Original ResearchConceptsMenstrual toxic shock syndromeSystemic immune activationHLA class II transgenic miceStaphylococcal enterotoxin BII transgenic miceImmune activationToxic shock syndromeSuperantigenic exotoxinsShock syndromeVaginal administrationTransgenic miceAcute systemic inflammatory diseaseSystemic inflammatory diseaseToxic shock syndrome toxinPeripheral lymphoid organsSEB-reactiveVaginal exposureProinflammatory cytokinesConjunctival routeLeukocytic infiltrationProfound elevationInflammatory diseasesLymphoid organsStaphylococcal superantigensT cells
2005
Endogenous Superantigens Shape Response to Exogenous Superantigens
Rajagopalan G, Singh M, Sen M, Murali N, Nath K, David C. Endogenous Superantigens Shape Response to Exogenous Superantigens. MSphere 2005, 12: 1119-1122. PMID: 16148182, PMCID: PMC1235787, DOI: 10.1128/cdli.12.9.1119-1122.2005.Peer-Reviewed Original Research
2004
In Vitro and In Vivo Evaluation of Staphylococcal Superantigen Peptide Antagonists
Rajagopalan G, Sen M, David C. In Vitro and In Vivo Evaluation of Staphylococcal Superantigen Peptide Antagonists. Infection And Immunity 2004, 72: 6733-6737. PMID: 15501813, PMCID: PMC522998, DOI: 10.1128/iai.72.11.6733-6737.2004.Peer-Reviewed Original Research
2003
Autoimmune diabetes in HLA‐DR3/DQ8 transgenic mice expressing the co‐stimulatory molecule B7‐1 in the β cells of islets of Langerhans
Rajagopalan G, Kudva YC, Chen L, Wen L, David CS. Autoimmune diabetes in HLA‐DR3/DQ8 transgenic mice expressing the co‐stimulatory molecule B7‐1 in the β cells of islets of Langerhans. International Immunology 2003, 15: 1035-1044. PMID: 12917255, DOI: 10.1093/intimm/dxg103.Peer-Reviewed Original ResearchConceptsCo-stimulatory molecules B7-1Incidence of diabetesTransgenic miceB7-1Autoimmune diabetesHLA-DQ8HLA-DR3T cellsBeta cellsBeta-cell toxin streptozotocinHLA class II associationsDQ8 transgenic micePresence of DR3HLA transgenic miceAntibody-mediated depletionPathogenesis of T1D.Class II associationsHLA class IIWhole-body irradiationPancreatic beta cellsNon-specific activationSpontaneous diabetesToxin streptozotocinDiabetogenic potentialSTZ treatmentExpression and function of HLA‐DR3 and DQ8 in transgenic mice lacking functional H2‐M
Rajagopalan G, Smart M, Cheng S, Krco C, Johnson K, David C. Expression and function of HLA‐DR3 and DQ8 in transgenic mice lacking functional H2‐M. HLA 2003, 62: 149-161. PMID: 12889995, DOI: 10.1034/j.1399-0039.2003.00088.x.Peer-Reviewed Original Research
2002
Modulation of insulitis and type 1 diabetes by transgenic HLA-DR3 and DQ8 in NOD mice lacking endogenous MHC class II
Kudva Y, Rajagopalan G, Raju R, Abraham R, Smart M, Hanson J, David C. Modulation of insulitis and type 1 diabetes by transgenic HLA-DR3 and DQ8 in NOD mice lacking endogenous MHC class II. Human Immunology 2002, 63: 987-999. PMID: 12392851, DOI: 10.1016/s0198-8859(02)00435-4.Peer-Reviewed Original ResearchConceptsType 1 diabetesEndogenous class II moleculesClass II moleculesHLA-DR3NOD miceHuman leukocyte antigen (HLA) transgenic miceTransgenic miceEndogenous MHC class IICyclophosphamide-induced diabetesIntra-islet infiltrationMultiple low dosesDouble transgenic miceGroups of miceMHC class IINonobese diabetic (NOD) backgroundTransgenic expressionSpontaneous diabetesDiabetic backgroundUnmanipulated miceDQ8DiabetesLow dosesClass IILess infiltrationMiceStaphylococcal enterotoxin B‐induced activation and concomitant resistance to cell death in CD28‐deficient HLA‐DQ8 transgenic mice
Rajagopalan G, Smart M, Marietta E, David C. Staphylococcal enterotoxin B‐induced activation and concomitant resistance to cell death in CD28‐deficient HLA‐DQ8 transgenic mice. International Immunology 2002, 14: 801-812. PMID: 12096040, DOI: 10.1093/intimm/dxf047.Peer-Reviewed Original ResearchConceptsT cellsStaphylococcal enterotoxin BHLA-DQ8IFN-gammaTransgenic miceEnterotoxin BBALB/c splenocytesDQ8 transgenic miceSerum IFN-gammaLess IL-2IL-6 productionAbsence of CD28Role of CD28Activation-induced cell deathCertain effector functionsIL-10Lethal shockIL-2IL-4Immune responseEffector functionsConcomitant resistanceCD28Nitric oxideMice