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El Khoury LY, Lin WH, Smadbeck JB, Barrett MT, Sadeghian D, McCune AF, Karagouga G, Cheville JC, Harris FR, Kinsella LM, Feathers RW, Schafer Klein JL, Walther-Antonio MR, Johnson SH, Penheiter AR, Cucinella G, Schivardi G, Bhagwate A, Borad MJ, Mansfield AS, Murphy SJ, Mariani A, Vasmatzis G, Anastasiadis PZ, Weroha SJ, Larish AM. Epigenomics may begin to explain in vitro differential response to hypomethylating agents in MMR-D hypermethylated endometrial cancer. Epigenomics 2023; 15:283-292. [PMID: 37212177 DOI: 10.2217/epi-2023-0026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023] Open
Abstract
This work examines differences in chromatin accessibility, methylation, and response to DNA hypomethylating agents between mismatch repair-deficient and non-mismatch repair-deficient endometrial cancer. Next-generation sequencing of a stage 1B, grade 2 endometrioid endometrial cancer tumor revealed microsatellite instability and a variant of unknown significance in POLE along with global and MLH1 hypermethylation. Inhibition of viability by decitabine in the study and comparison tumors was minimal, as shown by an inhibitory effect of 0 and 17.9, respectively. Conversely, the inhibitory effect of azacitidine on the study tumor was more pronounced, at 72.8 versus 41.2. In vitro, mismatch repair-deficient endometrial cancer with MLH1 hypermethylation respond better to DNA methyltransferase inhibition by azacytidine (DNA/RNA inhibition), than to decitabine (DNA-only inhibition). Additional large studies are needed to substantiate our findings.
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Affiliation(s)
- Louis Y El Khoury
- Department of Molecular Pharmacology & Experimental Therapeutics, Mayo Clinic, Rochester, MN 55905, USA
| | - Wan Hsin Lin
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - James B Smadbeck
- Biomarker Discovery Group, Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Michael T Barrett
- Division of Hematology/Oncology, Mayo Clinic, Phoenix, AZ 85054, USA
| | - Dorsay Sadeghian
- Biomarker Discovery Group, Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Alexa F McCune
- Biomarker Discovery Group, Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Giannoula Karagouga
- Biomarker Discovery Group, Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - John C Cheville
- Department of Laboratory Medicine & Pathology, Mayo Clinic, Rochester, MN 55905, USA
| | - Faye R Harris
- Biomarker Discovery Group, Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | | | - Ryan W Feathers
- Department of Cancer Biology, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Janet L Schafer Klein
- Biomarker Discovery Group, Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | | | - Sarah H Johnson
- Biomarker Discovery Group, Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Alan R Penheiter
- Biomarker Discovery Group, Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Giuseppe Cucinella
- Department of Obstetrics & Gynecology, Mayo Clinic, Rochester, MN 55905, USA
| | - Gabriella Schivardi
- Department of Obstetrics & Gynecology, Mayo Clinic, Rochester, MN 55905, USA
| | - Aditya Bhagwate
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN 55905, USA
| | - Mitesh J Borad
- Department of Oncology, Mayo Clinic, Scottsdale, AZ 85259, USA
| | | | - Stephen J Murphy
- Biomarker Discovery Group, Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Andrea Mariani
- Department of Obstetrics & Gynecology, Mayo Clinic, Rochester, MN 55905, USA
| | - George Vasmatzis
- Biomarker Discovery Group, Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | | | - Saravut J Weroha
- Division of Medical Oncology, Mayo Clinic, Rochester, MN 55905, USA
| | - Alyssa M Larish
- Department of Obstetrics & Gynecology, Mayo Clinic, Rochester, MN 55905, USA
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