Cited by 391Ovarian cancer diagnosis and treatmentEpigenetics and DNA MethylationMetal complexes synthesis and properties

Epigenetic Resensitization to Platinum in Ovarian Cancer

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Matei, Daniela, Fang, Fang, Shen, Changyu, Schilder, Jeanne, Arnold, Alesha, Zeng, Yan, Berry, William A., Huang, Tim +1 more·2012·Cancer Research

Published version of a preprint

Abstract

Preclinical studies have shown that hypomethylating agents reverse platinum resistance in ovarian cancer. In this phase II clinical trial, based upon the results of our phase I dose defining study, we tested the clinical and biologic activity of low-dose decitabine administered before carboplatin in platinum-resistant ovarian cancer patients. Among 17 patients with heavily pretreated and platinum-resistant ovarian cancer, the regimen induced a 35% objective response rate (RR) and progression-free survival (PFS) of 10.2 months, with nine patients (53%) free of progression at 6 months. Global and gene-specific DNA demethylation was achieved in peripheral blood mononuclear cells and tumors. The number of demethylated genes was greater (P < 0.05) in tumor biopsies from patients with PFS more than 6 versus less than 6 months (311 vs. 244 genes). Pathways enriched at baseline in tumors from patients with PFS more than 6 months included cytokine–cytokine receptor interactions, drug transporters, and mitogen-activated protein kinase, toll-like receptor and Jak-STAT signaling pathways, whereas those enriched in demethylated genes after decitabine treatment included pathways involved in cancer, Wnt signaling, and apoptosis (P < 0.01). Demethylation of MLH1, RASSF1A, HOXA10, and HOXA11 in tumors positively correlated with PFS (P < 0.05). Together, the results of this study suggest that low-dose decitabine altered DNA methylation of genes and cancer pathways, restoring sensitivity to carboplatin in patients with heavily pretreated ovarian cancer and resulting in a high RR and prolonged PFS. Cancer Res; 72(9); 2197–205. ©2012 AACR.

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Authors
Matei, D., Fang, F., Shen, C., Schilder, J., Arnold, A., Zeng, Y., Berry, W. A., Huang, T., & Nephew, K. P.
Affiliations
Indiana University Health (US)
Corresponding author
  • Matei, Daniela
  • Nephew, Kenneth P.
Venue
Cancer Research
Published
2012-04-30
Volume
72
Issue
9
Pages
2197-2205
ISSN
  • 0008-5472 (ISSN-L)
  • 1538-7445
OpenAlex
W2151783390
Cited by
390
References
56
Citations by year
2026: 20 · 2025: 11 · 2024: 27 · 2023: 23 · 2022: 21 · 2021: 33 · 2020: 21 · 2019: 38 · 2018: 36 · 2017: 33 · 2016: 35 · 2015: 39 · 2014: 32 · 2013: 18 · 2012: 3
FWCI
34.25
Type
journal article
Language
en
Open access
Locations
  • Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • IUScholarWorks (Indiana University) (submittedVersion)
Funders
  • U.S. Food and Drug Administration
  • National Cancer Institute (CA113001, R21CA133877, R01CA085289, U54CA113001, CA133877)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Ovarian cancer diagnosis and treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Health Sciences › Medicine › Oncology › Metal complexes synthesis and properties
Keywords
ovarian cancer, platinum resistance, decitabine, DNA demethylation, hypomethylating agents, carboplatin, progression-free survival, MLH1, RASSF1A, HOXA10, HOXA11, drug transporters, Wnt signaling, apoptosis, cytokine signaling pathways
MeSH terms
Decitabine, Aged, Aged, 80 and over, Antineoplastic Combined Chemotherapy Protocols, Azacitidine, Female, Humans, Middle Aged, Neoplasm Recurrence, Local, Ovarian Neoplasms, Peritoneal Neoplasms, Carboplatin, Disease-Free Survival, DNA Methylation

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