PMID- 36833223 OWN - NLM STAT- MEDLINE DCOM- 20230302 LR - 20230306 IS - 2073-4425 (Electronic) IS - 2073-4425 (Linking) VI - 14 IP - 2 DP - 2023 Jan 23 TI - ABCB1 Amplicon Contains Cyclic AMP Response Element-Driven TRIP6 Gene in Taxane-Resistant MCF-7 Breast Cancer Sublines. LID - 10.3390/genes14020296 [doi] LID - 296 AB - A limited number of studies are devoted to regulating TRIP6 expression in cancer. Hence, we aimed to unveil the regulation of TRIP6 expression in MCF-7 breast cancer cells (with high TRIP6 expression) and taxane-resistant MCF-7 sublines (manifesting even higher TRIP6 expression). We found that TRIP6 transcription is regulated primarily by the cyclic AMP response element (CRE) in hypomethylated proximal promoters in both taxane-sensitive and taxane-resistant MCF-7 cells. Furthermore, in taxane-resistant MCF-7 sublines, TRIP6 co-amplification with the neighboring ABCB1 gene, as witnessed by fluorescence in situ hybridization (FISH), led to TRIP6 overexpression. Ultimately, we found high TRIP6 mRNA levels in progesterone receptor-positive breast cancer and samples resected from premenopausal women. FAU - Daniel, Petr AU - Daniel P AUID- ORCID: 0000-0002-5523-4184 AD - Department of Biochemistry, Cell and Molecular Biology, Third Faculty of Medicine, Charles University, 100 00 Prague, Czech Republic. FAU - Balusikova, Kamila AU - Balusikova K AUID- ORCID: 0000-0002-0471-5877 AD - Department of Biochemistry, Cell and Molecular Biology, Third Faculty of Medicine, Charles University, 100 00 Prague, Czech Republic. FAU - Vaclavikova, Radka AU - Vaclavikova R AD - Toxicogenomics Unit, National Institute of Public Health, 100 00 Prague, Czech Republic. AD - Laboratory of Pharmacogenomics, Biomedical Center, Faculty of Medicine, Charles University, 323 00 Pilsen, Czech Republic. FAU - Seborova, Karolina AU - Seborova K AUID- ORCID: 0000-0002-8925-2321 AD - Toxicogenomics Unit, National Institute of Public Health, 100 00 Prague, Czech Republic. AD - Laboratory of Pharmacogenomics, Biomedical Center, Faculty of Medicine, Charles University, 323 00 Pilsen, Czech Republic. FAU - Ransdorfova, Sarka AU - Ransdorfova S AD - Department of Cytogenetics, Institute of Hematology and Blood Transfusion, 128 00 Prague, Czech Republic. FAU - Valerianova, Marie AU - Valerianova M AD - Department of Cytogenetics, Institute of Hematology and Blood Transfusion, 128 00 Prague, Czech Republic. FAU - Wei, Longfei AU - Wei L AD - Department of Chemistry, Institute of Chemical Biology & Drug Discovery, Stony Brook University-State University of New York, Stony Brook, NY 11794, USA. FAU - Jelinek, Michael AU - Jelinek M AD - Department of Biochemistry, Cell and Molecular Biology, Third Faculty of Medicine, Charles University, 100 00 Prague, Czech Republic. FAU - Tlapakova, Tereza AU - Tlapakova T AUID- ORCID: 0000-0001-8841-1573 AD - Department of Cell Biology, Faculty of Science, Charles University, 128 00 Prague, Czech Republic. FAU - Fleischer, Thomas AU - Fleischer T AUID- ORCID: 0000-0003-0985-8460 AD - Department of Cancer Genetics, Institute for Cancer Research, Oslo University Hospital, 0310 Oslo, Norway. FAU - Kristensen, Vessela N AU - Kristensen VN AD - Department of Medical Genetics, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0424 Oslo, Norway. FAU - Soucek, Pavel AU - Soucek P AUID- ORCID: 0000-0002-4294-6799 AD - Toxicogenomics Unit, National Institute of Public Health, 100 00 Prague, Czech Republic. AD - Laboratory of Pharmacogenomics, Biomedical Center, Faculty of Medicine, Charles University, 323 00 Pilsen, Czech Republic. FAU - Ojima, Iwao AU - Ojima I AUID- ORCID: 0000-0002-3628-1161 AD - Department of Chemistry, Institute of Chemical Biology & Drug Discovery, Stony Brook University-State University of New York, Stony Brook, NY 11794, USA. FAU - Kovar, Jan AU - Kovar J AUID- ORCID: 0000-0001-9432-8960 AD - Department of Biochemistry, Cell and Molecular Biology, Third Faculty of Medicine, Charles University, 100 00 Prague, Czech Republic. LA - eng PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20230123 PL - Switzerland TA - Genes (Basel) JT - Genes JID - 101551097 RN - 0 (ABCB1 protein, human) RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (ATP Binding Cassette Transporter, Subfamily B) RN - E0399OZS9N (Cyclic AMP) RN - 0 (LIM Domain Proteins) RN - 1605-68-1 (taxane) RN - 0 (Taxoids) RN - 0 (Transcription Factors) RN - 0 (TRIP6 protein, human) SB - IM MH - Female MH - Humans MH - Adaptor Proteins, Signal Transducing/genetics MH - *ATP Binding Cassette Transporter, Subfamily B/genetics MH - Cyclic AMP MH - *Drug Resistance, Neoplasm/genetics MH - In Situ Hybridization, Fluorescence MH - *LIM Domain Proteins/genetics MH - MCF-7 Cells MH - *Neoplasms/genetics MH - Response Elements MH - Taxoids MH - Transcription Factors/genetics PMC - PMC9957548 OTO - NOTNLM OT - ABCB1 OT - CpG methylation OT - MCF-7 OT - TRIP6 OT - breast cancer OT - cAMP response element OT - gene amplification COIS- The authors declare no conflict of interest. EDAT- 2023/02/26 06:00 MHDA- 2023/03/03 06:00 PMCR- 2023/01/23 CRDT- 2023/02/25 02:12 PHST- 2022/12/12 00:00 [received] PHST- 2023/01/18 00:00 [revised] PHST- 2023/01/19 00:00 [accepted] PHST- 2023/02/25 02:12 [entrez] PHST- 2023/02/26 06:00 [pubmed] PHST- 2023/03/03 06:00 [medline] PHST- 2023/01/23 00:00 [pmc-release] AID - genes14020296 [pii] AID - genes-14-00296 [pii] AID - 10.3390/genes14020296 [doi] PST - epublish SO - Genes (Basel). 2023 Jan 23;14(2):296. doi: 10.3390/genes14020296.