0000000000515981

AUTHOR

Michael Karas

showing 2 related works from this author

CD8+ cytotoxic T lymphocytes isolated from allogeneic healthy donors recognize HLA class Ia/Ib–associated renal carcinoma antigens with ubiquitous or…

2004

AbstractAllogeneic hematopoietic stem cell transplantation can induce considerable tumor remissions in metastatic renal-cell carcinoma (RCC) patients. The precise effector mechanisms mediating these graft-versus-tumor reactions are unknown. We studied RCC-directed CD8+ T-cell responses in blood lymphocytes of healthy individuals matched with established RCC cell lines for HLA-class I. In 21 of 22 allogeneic mixed lymphocyte/tumor-cell cultures (MLTCs), RCC-reactive cytotoxic T-lymphocytes (CTLs) were readily obtained. From MLTCs, 121 CD8+ CTL clones with memory phenotype were isolated. Their anti–RCC reactivity was restricted by multiple classical HLA-Ia molecules, in particular by HLA-A2, …

CD4-Positive T-LymphocytesCytotoxicity ImmunologicGenotypemedicine.medical_treatmentMolecular Sequence DataImmunologyCell SeparationHuman leukocyte antigenHematopoietic stem cell transplantationCross ReactionsBiologyurologic and male genital diseasesBiochemistryEpitheliumCell therapyEpitopesAntigenAntigens NeoplasmmedicineHumansTransplantation HomologousCytotoxic T cellAmino Acid SequenceCarcinoma Renal CellHistocompatibility Antigens Class ICell BiologyHematologyImmunotherapyFlow CytometryHematopoietic Stem CellsTissue DonorsCTL*HealthSpectrometry Mass Matrix-Assisted Laser Desorption-IonizationColonic NeoplasmsImmunologyMitogen-Activated Protein KinasesPeptidesCD8T-Lymphocytes CytotoxicBlood
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Rapid and Sensitive Identification of Major Histocompatibility Complex Class I-associated Tumor Peptides by Nano-LC MALDI MS/MS

2005

Identification of major histocompatibility complex (MHC)-associated peptides recognized by T-lymphocytes is a crucial prerequisite for the detection and manipulation of specific immune responses in cancer, viral infections, and autoimmune diseases. Unfortunately immunogenic peptides are less abundant species present in highly complex mixtures of MHC-extracted material. Most peptide identification strategies use microcapillary LC coupled to nano-ESI MS/MS in a challenging on-line approach. Alternatively MALDI PSD analysis has been applied for this purpose. We report here on the first off-line combination of nanoscale (nano) LC and MALDI TOF/TOF MS/MS for the identification of naturally proce…

CellsCellPeptideHuman leukocyte antigenMajor histocompatibility complexSensitivity and SpecificityBiochemistryEpitopeAnalytical ChemistryMajor Histocompatibility ComplexImmune systemCell Line TumormedicineHumansAmino Acid SequenceCarcinoma Renal CellMolecular Biologychemistry.chemical_classificationbiologyHistocompatibility Antigens Class IFlow CytometryMolecular biologyKidney NeoplasmsPeptide FragmentsNeoplasm Proteinsmedicine.anatomical_structurechemistrySpectrometry Mass Matrix-Assisted Laser Desorption-Ionizationbiology.proteinTime-of-flight mass spectrometryAntibodyMolecular & Cellular Proteomics
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