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Zhuang Y, Coppock JD, Haugrud AB, Lee JH, Messerli SM, Miskimins WK. Dichloroacetate and Quercetin Prevent Cell Proliferation, Induce Cell Death and Slow Tumor Growth in a Mouse Model of HPV-Positive Head and Neck Cancer. Cancers (Basel) 2024; 16:1525. [PMID: 38672607 PMCID: PMC11048222 DOI: 10.3390/cancers16081525] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/01/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
Elevated glucose uptake and production of lactate are common features of cancer cells. Among many tumor-promoting effects, lactate inhibits immune responses and is positively correlated with radioresistance. Dichloroacetate (DCA) is an inhibitor of pyruvate dehydrogenase kinase that decreases lactate production. Quercetin is a flavonoid compound found in fruits and vegetables that inhibits glucose uptake and lactate export. We investigated the potential role and mechanisms of DCA, quercetin, and their combination, in the treatment of HPV-positive head and neck squamous cell carcinoma, an antigenic cancer subtype in need of efficacious adjuvant therapies. C57Bl/6-derived mouse oropharyngeal epithelial cells, a previously developed mouse model that was retrovirally transduced with HPV type-16 E6/E7 and activated Ras, were used to assess these compounds. Both DCA and quercetin inhibited colony formation and reduced cell viability, which were associated with mTOR inhibition and increased apoptosis through enhanced ROS production. DCA and quercetin reduced tumor growth and enhanced survival in immune-competent mice, correlating with decreased proliferation as well as decreased acidification of the tumor microenvironment and reduction of Foxp (+) Treg lymphocytes. Collectively, these data support the possible clinical application of DCA and quercetin as adjuvant therapies for head and neck cancer patients.
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Affiliation(s)
| | | | | | | | - Shanta M. Messerli
- Cancer Biology and Immunotherapies, Sanford Research, Sioux Falls, SD 57104, USA; (Y.Z.); (J.D.C.); (A.B.H.); (J.H.L.)
| | - W. Keith Miskimins
- Cancer Biology and Immunotherapies, Sanford Research, Sioux Falls, SD 57104, USA; (Y.Z.); (J.D.C.); (A.B.H.); (J.H.L.)
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Elkin ER, Su AL, Kilburn BA, Bakulski KM, Armant DR, Loch-Caruso R. Toxicity assessments of selected trichloroethylene and perchloroethylene metabolites in three in vitro human placental models. Reprod Toxicol 2022; 109:109-120. [PMID: 35304307 PMCID: PMC9107309 DOI: 10.1016/j.reprotox.2022.03.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 03/07/2022] [Accepted: 03/10/2022] [Indexed: 01/25/2023]
Abstract
Residential and occupational exposures to the industrial solvents perchloroethylene (PERC) and trichloroethylene (TCE) present public health concerns. In humans, maternal PERC and TCE exposures can be associated with adverse birth outcomes. Because PERC and TCE are biotransformed to toxic metabolites and placental dysfunction can contribute to adverse birth outcomes, the present study compared the toxicity of key PERC and TCE metabolites in three in vitro human placenta models. We measured cell viability and caspase 3 + 7 activity in the HTR-8/SVneo and BeWo cell lines, and caspase 3 + 7 activity in first trimester villous explant cultures. Cultures were exposed for 24 h to 5-100 µM S-(1,2-dichlorovinyl)-L-cysteine (DCVC) and S-(1,2,2-trichlorovinyl)-L-cysteine (TCVC), or 5-200 µM trichloroacetate (TCA) and dichloroacetate (DCA). DCVC significantly reduced cell viability and increased caspase 3 + 7 activity in HTR-8/SVneo cells at a lower concentration (20 µM) compared with concentrations toxic to BeWo cells and villous explants. Similarly, TCVC reduced cell viability and increased caspase 3 + 7 activity in HTR-8/SVneo cells but not in BeWo cells. TCA and DCA had only negligible effects on HTR-8/SVneo or BeWo cells. This study advances understanding of potential risks of PERC and TCE exposure during pregnancy by identifying metabolites toxic in placental cells and tissues.
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Affiliation(s)
- Elana R Elkin
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan, USA; Department of Nutritional Sciences, University of Michigan, Ann Arbor, Michigan, USA.
| | - Anthony L Su
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan, USA; Department of Nutritional Sciences, University of Michigan, Ann Arbor, Michigan, USA
| | - Brian A Kilburn
- Department of Nutritional Sciences, University of Michigan, Ann Arbor, Michigan, USA; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Kelly M Bakulski
- Department of Epidemiology, University of Michigan, Ann Arbor, Michigan, USA; Department of Nutritional Sciences, University of Michigan, Ann Arbor, Michigan, USA
| | - D Randall Armant
- Department of Nutritional Sciences, University of Michigan, Ann Arbor, Michigan, USA; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA; Department of Anatomy and Cell Biology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Rita Loch-Caruso
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan, USA
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Shinoda Y, Aoki K, Shinkai A, Seki K, Takahashi T, Tsuneoka Y, Akimoto J, Fujiwara Y. Synergistic effect of dichloroacetate on talaporfin sodium-based photodynamic therapy on U251 human astrocytoma cells. Photodiagnosis Photodyn Ther 2020; 31:101850. [PMID: 32497773 DOI: 10.1016/j.pdpdt.2020.101850] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 05/12/2020] [Accepted: 05/29/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Talaporfin sodium (TS) is an authorized photosensitizer for photodynamic therapy (PDT) against some tumors in Japan; however, the drawbacks of the drug include its high cost and side effects. Thus, reducing the dose of TS in each round of TS-PDT against tumors is important for reducing treatment costs and improving patients' quality of life. Dichloroacetate (DCA) is approved for treating lactic acidosis and hereditary mitochondrial diseases, and it is known to enhance reactive oxygen species production and induce apoptosis in cancer cells. Therefore, DCA has the potential to enhance the effects of TS-PDT and permit the use of lower TS doses without reducing the anti-cancer effect. METHODS U251 human astrocytoma cells were simultaneously incubated with TS and DCA using different concentrations, administration schedules, and treatment durations, followed by laser irradiation. Cell viability was determined using the CCK-8 assay. RESULTS The combinational use of DCA and TS resulted in synergistically enhanced TS-PDT effects in U251 cells. The duration of DCA treatment before TS-PDT slightly enhanced the efficacy of TS-PDT. The intensity of laser irradiation was not associated with the synergistic effect of DCA on TS-PDT. In addition, the relationship between the elapsed time after TS/DCA combination treatment and PDT ineffectiveness was identical to that of TS monotherapy. CONCLUSIONS DCA synergistically enhanced the anti-cancer effect of TS-PDT, illustrating its potential for drug repositioning in cancer therapy in combination with PDT.
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Affiliation(s)
- Yo Shinoda
- Department of Environmental Health, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan.
| | - Kohei Aoki
- Department of Environmental Health, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Ayaka Shinkai
- Department of Environmental Health, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Kumi Seki
- Department of Environmental Health, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Tsutomu Takahashi
- Department of Environmental Health, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Yayoi Tsuneoka
- Department of Environmental Health, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Jiro Akimoto
- Department of Neurosurgery, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku, Tokyo, 160-0023, Japan
| | - Yasuyuki Fujiwara
- Department of Environmental Health, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan.
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Allen KT, Chin-Sinex H, DeLuca T, Pomerening JR, Sherer J, Watkins JB, Foley J, Jesseph JM, Mendonca MS. Dichloroacetate alters Warburg metabolism, inhibits cell growth, and increases the X-ray sensitivity of human A549 and H1299 NSC lung cancer cells. Free Radic Biol Med 2015; 89:263-73. [PMID: 26393423 DOI: 10.1016/j.freeradbiomed.2015.08.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 07/02/2015] [Accepted: 08/06/2015] [Indexed: 12/22/2022]
Abstract
We investigated whether altering Warburg metabolism (aerobic glycolysis) by treatment with the metabolic agent dichloroacetate (DCA) could increase the X-ray-induced cell killing of the radiation-resistant human non-small-cell lung cancer (NSCLC) cell lines A549 and H1299. Treatment with 50mM DCA decreased lactate production and glucose consumption in both A549 and H1299, clear indications of attenuated aerobic glycolysis. In addition, we found that DCA treatment also slowed cell growth, increased population-doubling time, and altered cell cycle distribution. Furthermore, we report that treatment with 50mM DCA significantly increased single and fractionated X-ray-induced cell killing of A549 and H1299 cells. Assay of DNA double-strand break repair by neutral comet assays demonstrated that DCA inhibited both the fast and the slow kinetics of X-ray-induced DSB repair in both A549 and H1299 NSCL cancer cells. Taken together the data suggest a correlation between an attenuated aerobic glycolysis and enhanced cytotoxicity and radiation-induced cell killing in radiation-resistant NSCLC cells.
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Affiliation(s)
- Kah Tan Allen
- Medical Sciences, Indiana University School of Medicine, Bloomington, IN 47405, USA
| | - Helen Chin-Sinex
- Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Thomas DeLuca
- Department of Biology, Indiana University, Bloomington, IN 47405, USA
| | | | - Jeremy Sherer
- Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - John B Watkins
- Medical Sciences, Indiana University School of Medicine, Bloomington, IN 47405, USA
| | - John Foley
- Medical Sciences, Indiana University School of Medicine, Bloomington, IN 47405, USA; Department of Dermatology, Indiana University School of Medicine, Indianapolis, IN 46202, USA; Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Jerry M Jesseph
- Medical Sciences, Indiana University School of Medicine, Bloomington, IN 47405, USA
| | - Marc S Mendonca
- Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN 46202, USA; Indiana University Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN 46202, USA; Department of Medical & Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
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Choi YW, Lim IK. Sensitization of metformin-cytotoxicity by dichloroacetate via reprogramming glucose metabolism in cancer cells. Cancer Lett 2014; 346:300-8. [PMID: 24480191 DOI: 10.1016/j.canlet.2014.01.015] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 01/08/2014] [Accepted: 01/20/2014] [Indexed: 12/22/2022]
Abstract
To investigate sensitization of metformin-cytotoxicity, cancer cells were treated with dichloroacetate (DCA), an inhibitor of pyruvate dehydrogenase kinase (PDK). Metformin-cytotoxicity was mainly dependent on glucose availability and reducing power generated by pentose phosphate pathway, whereas DCA cotreatment enhanced metformin-cytotoxicity via reprogramming glucose metabolism by inhibiting PDK and increasing mitochondrial respiration. DCA cotreatment elicited cell death rather than cell survival despite high glucose and high GSH condition. In conclusion, DCA sensitized metformin-cytotoxicity by reprogramming glucose metabolism in part from aerobic glycolysis to mitochondrial oxidation, evidenced by measurements of glucose consumption, lactate release, and the ratio of oxygen consumption rate/extracellular acidification rate.
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Affiliation(s)
- Yong Won Choi
- Department of Biochemistry and Molecular Biology, BK21 Cell Transformation and Restoration Project, Ajou University School of Medicine, Suwon 443-721, Republic of Korea
| | - In Kyoung Lim
- Department of Biochemistry and Molecular Biology, BK21 Cell Transformation and Restoration Project, Ajou University School of Medicine, Suwon 443-721, Republic of Korea.
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