Development and Validation of a Drug Activity Biomarker that Shows Target Inhibition in Cancer Patients Receiving Enzastaurin, a Novel Protein Kinase C-β Inhibitor
Green LJ, Marder P, Ray C, Cook CA, Jaken S, Musib LC, Herbst RS, Carducci M, Britten CD, Basche M, Eckhardt SG, Thornton D. Development and Validation of a Drug Activity Biomarker that Shows Target Inhibition in Cancer Patients Receiving Enzastaurin, a Novel Protein Kinase C-β Inhibitor. Clinical Cancer Research 2006, 12: 3408-3415. PMID: 16740765, DOI: 10.1158/1078-0432.ccr-05-2231.Peer-Reviewed Original ResearchMeSH KeywordsAntineoplastic Combined Chemotherapy ProtocolsBiomarkersCapecitabineCell Line, TumorClinical Trials, Phase I as TopicDeoxycytidineEnzyme ActivatorsEnzyme InhibitorsFlow CytometryFluorouracilFollow-Up StudiesHumansIndolesLeukocytes, MononuclearMonocytesNeoplasmsProtein Kinase CProtein Kinase C betaReproducibility of ResultsSensitivity and SpecificitySignal TransductionStructure-Activity RelationshipTreatment OutcomeConceptsPeripheral blood mononuclear cellsDaily oral dosesBlood mononuclear cellsCancer patientsOral dosesMononuclear cellsFlow cytometryDrug activity biomarkerPKC activityTarget cellsActivity biomarkersPhorbol esterNormal donorsPatientsActivity of PKCU937 cell lineTarget inhibitionEnzastaurinKinase inhibitorsΒ inhibitorSignificant decreaseCell linesU937 cellsIntracellular phosphoproteinsProtein kinase C