Govind Rajagopalan
Associate Research ScientistCards
About
Research
Publications
2025
Prevalence and production of superantigen exotoxins by cystic fibrosis Staphylococcus aureus isolates
Sun Y, Hu B, Chhabra S, Tolentino J, Suzuki N, Natarajan J, Bianco C, Planet P, Sherchand S, Adhikari R, Aman J, Koff J, Rajagopalan G. Prevalence and production of superantigen exotoxins by cystic fibrosis Staphylococcus aureus isolates. Journal Of Cystic Fibrosis 2025 PMID: 40940262, DOI: 10.1016/j.jcf.2025.08.020.Peer-Reviewed Original ResearchSA isolatesClinical isolatesSuperantigen profilesStaphylococcus aureusCF clinical isolatesArtificial sputum mediumProduction of superantigenic exotoxinsClinical presentationCystic fibrosisSputum mediumCF sputumImmunostimulatory potentialPoor respiratory outcomesCF lung diseaseSuperantigenic exotoxinsInducer of inflammationPresence of SAIsolatesLung diseaseRespiratory outcomesSuperantigensExotoxinImmune systemPediatric CFGenesEpidermal Growth Factor Receptor Regulates Beclin-1 and Autophagy in Hyperoxic Acute Lung Injury
Harris Z, Korde A, Khoury J, Manning E, Stanley G, Sun Y, Hu B, Shin H, Joerns J, Clark B, Mitchell K, Placek L, Unutmaz D, Moldobaeva A, Sharma L, Sauler M, Rajagopalan G, Zhang X, Wang H, Ghaedi M, Kang M, Koff J. Epidermal Growth Factor Receptor Regulates Beclin-1 and Autophagy in Hyperoxic Acute Lung Injury. American Journal Of Respiratory And Critical Care Medicine 2025, 211: a2472-a2472. DOI: 10.1164/ajrccm.2025.211.abstracts.a2472.Peer-Reviewed Original ResearchPersonalized inhaled bacteriophage therapy for treatment of multidrug-resistant Pseudomonas aeruginosa in cystic fibrosis
Chan B, Stanley G, Kortright K, Vill A, Modak M, Ott I, Sun Y, Würstle S, Grun C, Kazmierczak B, Rajagopalan G, Harris Z, Britto C, Stewart J, Talwalkar J, Appell C, Chaudary N, Jagpal S, Jain R, Kanu A, Quon B, Reynolds J, Teneback C, Mai Q, Shabanova V, Turner P, Koff J. Personalized inhaled bacteriophage therapy for treatment of multidrug-resistant Pseudomonas aeruginosa in cystic fibrosis. Nature Medicine 2025, 31: 1494-1501. PMID: 40301561, PMCID: PMC12092284, DOI: 10.1038/s41591-025-03678-8.Peer-Reviewed Original ResearchConceptsPhage therapyCystic fibrosisEvidence of trade-offsTreated with phagesEvolutionary trade-offClinical impact of antimicrobial resistanceMultidrug-resistant Pseudomonas aeruginosaBacterial virulenceAntimicrobial resistance crisisLytic virusesDecrease antibiotic resistanceSputum microbiomePhageBacteriophage therapyImpact of antimicrobial resistanceAntibiotic resistanceResistance crisisStandard antibioticsAntimicrobial resistanceSputum densityMultidrug resistancePulmonary infectionCompassionate basisClinical courseMedian age
2024
Epidermal Growth Factor Receptor Regulates Beclin-1 in Hyperoxia-Induced Lung Injury
Harris Z, Sun Y, Korde A, Hu B, Sharma L, Manning E, Joerns J, Clark B, Stanley G, Shin H, Placek L, Unutmaz D, Chun H, Sauler M, Rajagopalan G, Zhang X, Wang H, Kang M, Koff J. Epidermal Growth Factor Receptor Regulates Beclin-1 in Hyperoxia-Induced Lung Injury. 2024, a6841-a6841. DOI: 10.1164/ajrccm-conference.2024.209.1_meetingabstracts.a6841.Peer-Reviewed Original ResearchRole of Staphylococcus Aureus Superantigens in Cystic Fibrosis Lung Inflammation
Rajagopalan G, Tolentino J, Sun Y, Hu B, Koff J. Role of Staphylococcus Aureus Superantigens in Cystic Fibrosis Lung Inflammation. 2024, a6673-a6673. DOI: 10.1164/ajrccm-conference.2024.209.1_meetingabstracts.a6673.Peer-Reviewed Original ResearchOptimized preparation pipeline for emergency phage therapy against Pseudomonas aeruginosa at Yale University
Würstle S, Lee A, Kortright K, Winzig F, An W, Stanley G, Rajagopalan G, Harris Z, Sun Y, Hu B, Blazanin M, Hajfathalian M, Bollyky P, Turner P, Koff J, Chan B. Optimized preparation pipeline for emergency phage therapy against Pseudomonas aeruginosa at Yale University. Scientific Reports 2024, 14: 2657. PMID: 38302552, PMCID: PMC10834462, DOI: 10.1038/s41598-024-52192-3.Peer-Reviewed Original ResearchConceptsEvolutionary selection pressurePhage characterizationPhage therapyPersistent bacterial infectionsBacteriophage therapyPhageSelection pressurePseudomonas aeruginosaInvestigational new drug applicationBacterial infectionsNew Drug ApplicationTherapyDrug applicationClinical applicationAutographiviridaeBacteriaPotential strategy
2023
Protracted Pulmonary Inflammation in IFN-gamma Deficient Mice Recovering From Cytokine Release Syndrome
Rajagopalan G, Sun Y, Hu B, Harris Z, Stanely G, Koff J. Protracted Pulmonary Inflammation in IFN-gamma Deficient Mice Recovering From Cytokine Release Syndrome. 2023, a1386-a1386. DOI: 10.1164/ajrccm-conference.2023.207.1_meetingabstracts.a1386.Peer-Reviewed Original ResearchA Novel Zinc (II) Porphyrin Is Synergistic with PEV2 Bacteriophage against Pseudomonas aeruginosa Infections
Geyer J, Krupa K, Harris Z, Sun Y, Sharma L, Würstle S, Hu B, Stanley G, Rajagopalan G, Pellot E, Koff J, Robinson J. A Novel Zinc (II) Porphyrin Is Synergistic with PEV2 Bacteriophage against Pseudomonas aeruginosa Infections. Antibiotics 2023, 12: 735. PMID: 37107097, PMCID: PMC10135120, DOI: 10.3390/antibiotics12040735.Peer-Reviewed Original ResearchMinimum inhibitory concentrationMinimum bactericidal concentrationCystic fibrosisAntiviral activityPseudomonas aeruginosa infectionLife-threatening infectionsAntibiotic-resistant infectionsDose-dependent responsePulmonary infectionPotent bactericidal activityAeruginosa infectionMouse lungPsA populationImmune systemVivo modelLung cellsPSA cellsHealth concernNovel therapeuticsInfectionLung modelH441 cellsOpportunistic bacterial pathogenSignificant decreaseInhibitory concentration
2020
Contribution of Staphylococcal Enterotoxin B to Staphylococcus aureus Systemic Infection
Bae J, Da F, Liu R, He L, Lv H, Fisher E, Rajagopalan G, Li M, Cheung G, Otto M. Contribution of Staphylococcal Enterotoxin B to Staphylococcus aureus Systemic Infection. The Journal Of Infectious Diseases 2020, 223: 1766-1775. PMID: 32937658, PMCID: PMC8161638, DOI: 10.1093/infdis/jiaa584.Peer-Reviewed Original ResearchConceptsStaphylococcal enterotoxin BS. aureus pathogenesisCommunity-associated methicillin-resistant S. aureus infectionsMethicillin-resistant S. aureus infectionsEnterotoxin BS. aureus infectionMouse infection modelDrug development strategiesCytokine stormFatal exacerbationStaphylococcus aureus systemic infectionSuperantigenic toxinsAureus infectionMajor human pathogenST59 isolatesSystemic infectionInfection modelVirulence potentialInfectionStaphylococcus aureusPathogenesisHuman pathogensSEBExacerbationIsolatesIL-17A and IFN-gamma Play Distinct Roles in Pulmonary and Extrapulmonary Acute Respiratory Distress Syndrome Induced by a Staphylococcal Superantigen
Rajagopalan G, Coutermarsh-Ott S, Sun Y, Hu B, Harris Z, Stanley G, Koff J. IL-17A and IFN-gamma Play Distinct Roles in Pulmonary and Extrapulmonary Acute Respiratory Distress Syndrome Induced by a Staphylococcal Superantigen. 2020, a7708-a7708. DOI: 10.1164/ajrccm-conference.2020.201.1_meetingabstracts.a7708.Peer-Reviewed Original Research