PMID- 30252132 OWN - NLM STAT- MEDLINE DCOM- 20190422 LR - 20190422 IS - 1097-0215 (Electronic) IS - 0020-7136 (Linking) VI - 144 IP - 3 DP - 2019 Feb 1 TI - Epigenetic regulation of Amphiregulin and Epiregulin in colorectal cancer. PG - 569-581 LID - 10.1002/ijc.31892 [doi] AB - Expression of the epidermal growth factor ligands amphiregulin (AREG) and epiregulin (EREG) is positively correlated with a response to EGFR-targeted therapies in colorectal cancer. Gene-body methylation sites, which show a strong inverse correlation with AREG and EREG gene expression, were identified in cell lines using targeted 454 FLX-bisulfite sequencing and SIRPH analyses for AREG/EREG promoters and intragenic CpGs. Upon treatment of colorectal cancer cells with 5-aza-2'-desoxycytidine, methylation decreases at specific intragenic CpGs accompanied by upregulation of AREG and EREG gene expression. The same AREG gene-body methylation was also found in human colorectal cancer samples and is independent of KRAS and NRAS mutations. Methylation is specifically decreased in the tumor epithelial compartment as compared to stromal tissue and normal epithelium. Investigation of a promoter/enhancer function of the AREG exon 2 region revealed a potential promoter function in reverse orientation. Retrospective comparison of the predictive power of AREG gene-body methylation versus AREG gene expression using samples from colorectal cancer patients treated with anti-EGFR inhibitors with complete clinical follow-up revealed that AREG expression is superior to AREG gene methylation. AREG and EREG genes undergo a complex regulation involving both intragenic methylation and promoter-dependent control. CI - (c) 2018 UICC. FAU - Bormann, Felix AU - Bormann F AD - Charite Universitatsmedizin Berlin, Institute of Pathology, Laboratory of Molecular Tumor Pathology and Systems Biology, Berlin, Germany. FAU - Stinzing, Sebastian AU - Stinzing S AUID- ORCID: 0000-0002-3297-5801 AD - Department of Hematology and Medical Oncology, Klinikum der Universitat Munchen (LMU); German Cancer Consortium site Munich (DKTK); German Cancer Research Centre (DKFZ), Heidelberg, Germany. FAU - Tierling, Sascha AU - Tierling S AD - Department of Genetics/Epigenetics, FR8.3 Life Sciences, Saarland University, Saarbrucken. FAU - Morkel, Markus AU - Morkel M AD - Charite Universitatsmedizin Berlin, Institute of Pathology, Laboratory of Molecular Tumor Pathology and Systems Biology, Berlin, Germany. AD - DKTK, German Consortium for Translational Cancer Research, Partner Site Berlin and DKFZ, German Cancer Research Center, Heidelberg, Germany. FAU - Markelova, Maria Rivera AU - Markelova MR AD - EPO Experimental Pharmacology and Oncology, Berlin, Germany. FAU - Walter, Jorn AU - Walter J AD - Department of Genetics/Epigenetics, FR8.3 Life Sciences, Saarland University, Saarbrucken. FAU - Weichert, Wilko AU - Weichert W AD - DKTK, German Consortium for Translational Cancer Research, Partner Site Berlin and DKFZ, German Cancer Research Center, Heidelberg, Germany. AD - Institute of Pathology, Technical University Munich, Germany and Munich German Cancer Consortium (DKTK), German Cancer Research Centre (DKFZ), Heidelberg, Germany. FAU - Rossner, Florian AU - Rossner F AD - Charite Universitatsmedizin Berlin, Institute of Pathology, Laboratory of Molecular Tumor Pathology and Systems Biology, Berlin, Germany. FAU - Kuhn, Natalia AU - Kuhn N AD - Charite Universitatsmedizin Berlin, Institute of Pathology, Laboratory of Molecular Tumor Pathology and Systems Biology, Berlin, Germany. FAU - Perner, Juliane AU - Perner J AD - Max Planck Institute for Molecular Genetics, Berlin, Germany. FAU - Dietz, Johanna AU - Dietz J AD - Charite Universitatsmedizin Berlin, Institute of Pathology, Laboratory of Molecular Tumor Pathology and Systems Biology, Berlin, Germany. FAU - Ispasanie, Sylvia AU - Ispasanie S AD - Charite Universitatsmedizin Berlin, Institute of Pathology, Laboratory of Molecular Tumor Pathology and Systems Biology, Berlin, Germany. AD - BSIO Berlin School of Integrative Oncology, University Medicine Charite, Berlin, Germany. FAU - Dietel, Manfred AU - Dietel M AD - Charite Universitatsmedizin Berlin, Institute of Pathology, Laboratory of Molecular Tumor Pathology and Systems Biology, Berlin, Germany. AD - DKTK, German Consortium for Translational Cancer Research, Partner Site Berlin and DKFZ, German Cancer Research Center, Heidelberg, Germany. FAU - Schafer, Reinhold AU - Schafer R AD - Charite Universitatsmedizin Berlin, Institute of Pathology, Laboratory of Molecular Tumor Pathology and Systems Biology, Berlin, Germany. AD - DKTK, German Consortium for Translational Cancer Research, Partner Site Berlin and DKFZ, German Cancer Research Center, Heidelberg, Germany. FAU - Heinemann, Volker AU - Heinemann V AD - Department of Hematology and Medical Oncology, Klinikum der Universitat Munchen (LMU); German Cancer Consortium site Munich (DKTK); German Cancer Research Centre (DKFZ), Heidelberg, Germany. FAU - Sers, Christine AU - Sers C AUID- ORCID: 0000-0002-6219-1514 AD - Charite Universitatsmedizin Berlin, Institute of Pathology, Laboratory of Molecular Tumor Pathology and Systems Biology, Berlin, Germany. AD - DKTK, German Consortium for Translational Cancer Research, Partner Site Berlin and DKFZ, German Cancer Research Center, Heidelberg, Germany. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20181107 PL - United States TA - Int J Cancer JT - International journal of cancer JID - 0042124 RN - 0 (AREG protein, human) RN - 0 (Amphiregulin) RN - 0 (EREG protein, human) RN - 0 (Epiregulin) RN - 0 (KRAS protein, human) RN - 0 (RNA, Messenger) RN - EC 2.7.10.1 (EGFR protein, human) RN - EC 2.7.10.1 (ErbB Receptors) RN - EC 3.6.5.2 (Proto-Oncogene Proteins p21(ras)) SB - IM MH - Amphiregulin/biosynthesis/*genetics MH - Caco-2 Cells MH - Cell Line, Tumor MH - Colorectal Neoplasms/*genetics/metabolism/pathology MH - DNA Methylation MH - Epigenesis, Genetic MH - Epiregulin/*genetics MH - Epithelial Cells/metabolism/pathology MH - ErbB Receptors/genetics/metabolism MH - Gene Expression MH - HCT116 Cells MH - Humans MH - Promoter Regions, Genetic MH - Proto-Oncogene Proteins p21(ras)/genetics/metabolism MH - RNA, Messenger/biosynthesis/genetics MH - Retrospective Studies MH - Stromal Cells/metabolism/pathology OTO - NOTNLM OT - DNA methylation OT - amphiregulin OT - expression OT - prediction EDAT- 2018/09/27 06:00 MHDA- 2019/04/23 06:00 CRDT- 2018/09/26 06:00 PHST- 2018/05/15 00:00 [received] PHST- 2018/08/05 00:00 [revised] PHST- 2018/08/20 00:00 [accepted] PHST- 2018/09/27 06:00 [pubmed] PHST- 2019/04/23 06:00 [medline] PHST- 2018/09/26 06:00 [entrez] AID - 10.1002/ijc.31892 [doi] PST - ppublish SO - Int J Cancer. 2019 Feb 1;144(3):569-581. doi: 10.1002/ijc.31892. Epub 2018 Nov 7.