PMID- 21701041 OWN - NLM STAT- MEDLINE DCOM- 20120313 LR - 20220410 IS - 1933-7205 (Electronic) IS - 1933-7191 (Linking) VI - 18 IP - 12 DP - 2011 Dec TI - Dichloroacetate induces apoptosis of epithelial ovarian cancer cells through a mechanism involving modulation of oxidative stress. PG - 1253-61 LID - 10.1177/1933719111411731 [doi] AB - Epithelial ovarian cancer (EOC) cells are under intrinsic oxidative stress, which alters metabolic activity and reduces apoptosis. Key oxidative stress enzymes, including myeloperoxidase (MPO) and inducible nitric oxide synthase (iNOS), are upregulated and colocalized in EOC cells. Oxidative stress is also regulated, in part, by superoxide dismutase (SOD) and hypoxia-inducible factor (HIF) 1a. Dichloroacetate (DCA) converts anaerobic to aerobic metabolism and thus was utilized to determine the effects on apoptosis, iNOS, MPO, extracellular SOD (SOD-3), and HIF-1a, in EOC cells. Protein and messenger RNA (mRNA) levels of iNOS, MPO, SOD-3, and HIF-1a were evaluated by immunoprecipitation/Western blot and real-time reverse transcriptase-polymerase chain reaction (RT-PCR), respectively, utilizing SKOV-3 and MDAH-2774 treated with DCA. Apoptosis was assessed by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) and caspase 3 assays. Dichloroacetate induced apoptosis, reduced MPO, iNOS, and HIF-1a, whereas increased SOD, in both EOC cell lines. In conclusion, reduction of enhanced oxidative stress-induced apoptosis of EOC cells, which may serve as future therapeutic intervention for ovarian cancer. FAU - Saed, Ghassan M AU - Saed GM AD - Department of Obstetrics and Gynecology, The CS Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI 48201, USA. gsaed@med.wayne.edu FAU - Fletcher, Nicole M AU - Fletcher NM FAU - Jiang, Zhong L AU - Jiang ZL FAU - Abu-Soud, Husam M AU - Abu-Soud HM FAU - Diamond, Michael P AU - Diamond MP LA - eng PT - Journal Article DEP - 20110623 PL - United States TA - Reprod Sci JT - Reproductive sciences (Thousand Oaks, Calif.) JID - 101291249 RN - 0 (Antineoplastic Agents) RN - 0 (HIF1A protein, human) RN - 0 (Hypoxia-Inducible Factor 1, alpha Subunit) RN - 0 (RNA, Messenger) RN - 9LSH52S3LQ (Dichloroacetic Acid) RN - EC 1.11.1.7 (Peroxidase) RN - EC 1.14.13.39 (NOS2 protein, human) RN - EC 1.14.13.39 (Nitric Oxide Synthase Type II) RN - EC 1.15.1.1 (SOD3 protein, human) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - EC 3.4.22.- (CASP3 protein, human) RN - EC 3.4.22.- (Caspase 3) SB - IM MH - Antineoplastic Agents/*pharmacology MH - Apoptosis/*drug effects MH - Blotting, Western MH - Caspase 3/metabolism MH - Cell Line, Tumor MH - Dichloroacetic Acid/*pharmacology MH - Dose-Response Relationship, Drug MH - Epithelial Cells/*drug effects/metabolism/pathology MH - Female MH - Humans MH - Hypoxia-Inducible Factor 1, alpha Subunit/genetics/metabolism MH - Immunoprecipitation MH - In Situ Nick-End Labeling MH - Nitric Oxide Synthase Type II/genetics/metabolism MH - Ovarian Neoplasms/genetics/metabolism/*pathology MH - Oxidation-Reduction MH - Oxidative Stress/*drug effects MH - Peroxidase/genetics/metabolism MH - RNA, Messenger/metabolism MH - Real-Time Polymerase Chain Reaction MH - Reverse Transcriptase Polymerase Chain Reaction MH - Superoxide Dismutase/genetics/metabolism EDAT- 2011/06/28 06:00 MHDA- 2012/03/14 06:00 CRDT- 2011/06/25 06:00 PHST- 2011/06/25 06:00 [entrez] PHST- 2011/06/28 06:00 [pubmed] PHST- 2012/03/14 06:00 [medline] AID - 1933719111411731 [pii] AID - 10.1177/1933719111411731 [doi] PST - ppublish SO - Reprod Sci. 2011 Dec;18(12):1253-61. doi: 10.1177/1933719111411731. Epub 2011 Jun 23.