0000000001319079

AUTHOR

Esther Herpel

showing 6 related works from this author

Colonoscopy and reduction of colorectal cancer risk by molecular tumor subtypes: a population-based case-control study

2020

AbstractObjectiveIn previous studies, the protective effect of colonoscopy was generally stronger for distal than for proximal colorectal cancer (CRC). This study aimed to investigate whether the association of colonoscopy and CRC risk varies according to major molecular pathological features and pathways of CRC.DesignPopulation-based case-control study from Germany, including 2132 patients with a first diagnosis of CRC and information on major molecular tumor markers, and 2486 control participants without CRC. Detailed participant characteristics were collected by standardized questionnaires and information on previous colonoscopy was derived from medical records. Polytomous logistic regre…

AdenomaMaleProto-Oncogene Proteins B-rafOncologymedicine.medical_specialtyColorectal cancerPopulationRectumColonoscopymedicine.disease_cause03 medical and health sciences0302 clinical medicineGermanyInternal medicineBiomarkers TumormedicineHumanseducationneoplasmsAgedAged 80 and overeducation.field_of_studyHepatologyCpG Island Methylator Phenotypemedicine.diagnostic_testbusiness.industryGastroenterologyCase-control studyCancerColonoscopyOdds ratioDNA MethylationMiddle Agedmedicine.diseaseConfidence intervaldigestive system diseasesmedicine.anatomical_structureCase-Control Studies030220 oncology & carcinogenesisMutationCpG IslandsFemaleMicrosatellite Instability030211 gastroenterology & hepatologyObservational studyKRASColorectal Neoplasmsbusiness
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Establishment and comparative characterization of novel squamous cell non-small cell lung cancer cell lines and their corresponding tumor tissue.

2010

Abstract Background Cell lines play an important role for studying tumor biology and novel therapeutic agents. Particularly in pulmonary squamous cell carcinoma (SCC) the availability of cell lines is limited and knowledge about their representativeness for corresponding tumor tissue is scanty. Materials and methods We established three novel SCC cell lines from fresh tumor tissue of 28 donors, including 8 SCC. Two cell lines were derived from different localizations of the same donor, i.e. primary tumor and lymph node metastasis. This represents a so far unique combination in lung cancer. The genotypes, gene expression profiles and mutational status of epidermal growth factor receptor ( EG…

Pulmonary and Respiratory MedicineCancer ResearchLung NeoplasmsAngiogenesisCarcinogenicity TestsCellIn situ hybridizationCell Growth ProcessesBiologymedicine.disease_causeMiceCell MovementCarcinoma Non-Small-Cell LungCell Line TumormedicineCell AdhesionAnimalsHumansCell LineageIn Situ Hybridization FluorescenceMutationComparative Genomic Hybridizationmedicine.diagnostic_testNeovascularization PathologicGene Expression ProfilingCell Differentiationmedicine.diseasePrimary tumorMolecular biologyDNA FingerprintingGene expression profilingErbB Receptorsmedicine.anatomical_structureGenes rasOncologyCell cultureTandem Repeat SequencesLymphatic MetastasisMutationCarcinoma Squamous CellFluorescence in situ hybridizationLung cancer (Amsterdam, Netherlands)
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Validating comprehensive next-generation sequencing results for precision oncology : The NCT/DKTK molecularly aided stratification for tumor eradicat…

2022

Purpose Rapidly evolving genomics technologies, in particular comprehensive next-generation sequencing (NGS), have led to exponential growth in the understanding of cancer biology, shifting oncology toward personalized treatment strategies. However, comprehensive NGS approaches, such as whole-exome sequencing, have limitations that are related to the technology itself as well as to the input source. Hence, clinical implementation of comprehensive NGS in a quality-controlled diagnostic workflow requires both the standardization of sequencing procedures and continuous validation of sequencing results by orthogonal methods in an ongoing program to enable the determination of key test parameter…

0301 basic medicineCancer Researchmedicine.medical_specialtyStandardizationComputer sciencePersonalized treatmentMedizinGenomicsDNA sequencing03 medical and health sciences030104 developmental biology0302 clinical medicineWorkflowOncologyPrecision oncology030220 oncology & carcinogenesismedicineMedical physicsCancer biology
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DNA methylation profiling to explore colorectal tumor differences according to menopausal hormone therapy use in women

2019

Aim: Use of menopausal hormone therapy (MHT) has been associated with a reduced risk for colorectal cancer, but mechanisms underlying this relationship are not well understood. In the colon, MHT appears to act through estrogen receptor β (ERβ) which may influence DNA methylation by binding to DNA. Using genome-wide methylation profiling data, we aimed to identify genes that may be differentially methylated according to MHT use. Materials & methods: DNA methylation was measured using Illumina HumanMethylation450k arrays in two independent tumor sample sets of colorectal cancer patients. Differential methylation was determined using R/limma. Results: In the discovery analysis, two CpG si…

Cancer Researchmedicine.drug_classColorectal cancermedicine.medical_treatmentEstrogen receptorBiologychemistry.chemical_compoundGeneticsmedicineEstrogen Receptor betaHumansGeneAgedAged 80 and overEstrogen Replacement TherapyHormone replacement therapy (menopause)DNA MethylationMiddle Agedmedicine.diseasechemistryCpG siteEstrogenDNA methylationCancer researchCpG IslandsFemaleMenopauseColorectal NeoplasmsDNAEpigenomics
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Genome-wide DNA methylation differences according to oestrogen receptor beta status in colorectal cancer.

2019

Involvement of sex hormones in colorectal cancer (CRC) development has been linked to oestrogen receptor β (ERβ). Expression of ERβ is found reduced in tumour tissue and inversely related to mortality. However, mechanisms are not well understood. Our study aimed to detect differentially methylated genes associated with ERβ expression, which could point to mechanisms by which ERβ could influence risk and prognosis of CRC. Epigenome-wide DNA methylation profiling was performed using Illumina HumanMethylation450k BeadChip arrays in two independent tumour sample sets of CRC patients recruited in 2003–2010 by the German DACHS study (discovery cohort n = 917, replication cohort n = 907). ERβ expr…

0301 basic medicineAdultMaleCancer ResearchColorectal cancerBiologyGenomeEpigenesis Genetic03 medical and health sciencesTumour tissue0302 clinical medicinemedicineBiomarkers TumorEstrogen Receptor betaHumansEpigeneticsOestrogen receptorBeta (finance)Promoter Regions GeneticMolecular BiologyAgedAged 80 and overDNA MethylationMiddle Agedmedicine.diseasePrognosisGene Expression Regulation NeoplasticSurvival Rate030104 developmental biology030220 oncology & carcinogenesisCase-Control StudiesDNA methylationCancer researchFemaleColorectal NeoplasmsHormoneFollow-Up StudiesGenome-Wide Association StudyResearch PaperEpigenetics
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Genome-wide DNA methylation differences according to oestrogen receptor beta status in colorectal cancer

2019

Involvement of sex hormones in colorectal cancer (CRC) development has been linked to oestrogen receptor β (ERβ). Expression of ERβ is found reduced in tumour tissue and inversely related to mortality. However, mechanisms are not well understood. Our study aimed to detect differentially methylated genes associated with ERβ expression, which could point to mechanisms by which ERβ could influence risk and prognosis of CRC. Epigenome-wide DNA methylation profiling was performed using Illumina HumanMethylation450k BeadChip arrays in two independent tumour sample sets of CRC patients recruited in 2003–2010 by the German DACHS study (discovery cohort n = 917, replication cohort n = 907). ERβ expr…

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