0000000000115758

AUTHOR

Jonas Börtzler

showing 2 related works from this author

Cytotoxicity of the bisphenolic honokiol from Magnolia officinalis against multiple drug-resistant tumor cells as determined by pharmacogenomics and …

2014

A main problem in oncology is the development of drug-resistance. Some plant-derived lignans are established in cancer therapy, e.g. the semisynthetic epipodophyllotoxins etoposide and teniposide. Their activity is, unfortunately, hampered by the ATP-binding cassette (ABC) efflux transporter, P-glycoprotein. Here, we investigated the bisphenolic honokiol derived from Magnolia officinalis. P-glycoprotein-overexpressing CEM/ADR5000 cells were not cross-resistant to honokiol, but MDA-MB-231 BRCP cells transfected with another ABC-transporter, BCRP, revealed 3-fold resistance. Further drug resistance mechanisms analyzed study was the tumor suppressor TP53 and the epidermal growth factor recepto…

HonokiolATP Binding Cassette Transporter Subfamily BPharmaceutical ScienceBiologyPharmacologyLignanschemistry.chemical_compoundGefitinibCell Line TumorDrug DiscoverymedicineATP Binding Cassette Transporter Subfamily G Member 2HumansEpidermal growth factor receptorCytotoxicityPI3K/AKT/mTOR pathwayOligonucleotide Array Sequence AnalysisPharmacologyBiphenyl CompoundsTransfectionbiology.organism_classificationAntineoplastic Agents PhytogenicDrug Resistance MultipleNeoplasm ProteinsErbB ReceptorsMolecular Docking SimulationMagnolia officinalisComplementary and alternative medicinechemistryDrug Resistance NeoplasmMagnoliaPharmacogeneticsbiology.proteinMolecular MedicineATP-Binding Cassette TransportersErlotinibTumor Suppressor Protein p53Transcriptomemedicine.drugSignal TransductionPhytomedicine : international journal of phytotherapy and phytopharmacology
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Pharmacogenomic and molecular docking studies on the cytotoxicity of the natural steroid wortmannin against multidrug-resistant tumor cells

2014

Wortmannin is a cytotoxic compound derived from the endophytic fungi Fusarium oxysporum, Penicillium wortmannii and Penicillium funiculosum that occurs in many plants, including medicinal herbs. The rationale to develop novel anticancer drugs is the frequent development of tumor resistance to the existing antineoplasic agents. Therefore, it is mandatory to analyze resistance mechanisms of novel drug candidates such as wortmannin as well to bring effective drugs into the clinic that have the potential to bypass or overcome resistance to established drugs and to substantially increase life span of cancer patients. In the present project, we found that P-glycoprotein-overexpressing tumor cells…

DrugATP Binding Cassette Transporter Subfamily BClass I Phosphatidylinositol 3-Kinasesmedia_common.quotation_subjectPharmaceutical ScienceAntineoplastic AgentsATP-binding cassette transporterDrug resistancePharmacologyBiologyWortmanninPhosphatidylinositol 3-Kinaseschemistry.chemical_compoundCell Line TumorDrug DiscoveryCluster AnalysisHumansCytotoxicityProtein kinase BPI3K/AKT/mTOR pathwayOligonucleotide Array Sequence Analysismedia_commonPharmacologyDrug Resistance MultipleAndrostadienesMolecular Docking SimulationMultiple drug resistanceComplementary and alternative medicinechemistryDrug Resistance NeoplasmPharmacogeneticsMolecular MedicineWortmanninSignal TransductionPhytomedicine
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