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Vcelkova T, Reiter W, Zylka M, Hollenstein D, Schuckert S, Hartl M, Seiser C. GSE1 links the HDAC1/CoREST co-repressor complex to DNA damage. Nucleic Acids Res 2023; 51:11748-11769. [PMID: 37878419 PMCID: PMC10681733 DOI: 10.1093/nar/gkad911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 09/29/2023] [Accepted: 10/06/2023] [Indexed: 10/27/2023] Open
Abstract
Post-translational modifications of histones are important regulators of the DNA damage response (DDR). By using affinity purification mass spectrometry (AP-MS) we discovered that genetic suppressor element 1 (GSE1) forms a complex with the HDAC1/CoREST deacetylase/demethylase co-repressor complex. In-depth phosphorylome analysis revealed that loss of GSE1 results in impaired DDR, ATR signalling and γH2AX formation upon DNA damage induction. Altered profiles of ATR target serine-glutamine motifs (SQ) on DDR-related hallmark proteins point to a defect in DNA damage sensing. In addition, GSE1 knock-out cells show hampered DNA damage-induced phosphorylation on SQ motifs of regulators of histone post-translational modifications, suggesting altered histone modification. While loss of GSE1 does not affect the histone deacetylation activity of CoREST, GSE1 appears to be essential for binding of the deubiquitinase USP22 to CoREST and for the deubiquitination of H2B K120 in response to DNA damage. The combination of deacetylase, demethylase, and deubiquitinase activity makes the USP22-GSE1-CoREST subcomplex a multi-enzymatic eraser that seems to play an important role during DDR. Since GSE1 has been previously associated with cancer progression and survival our findings are potentially of high medical relevance.
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Affiliation(s)
- Terezia Vcelkova
- Center for Anatomy and Cell Biology, Medical University of Vienna, 1090 Vienna, Austria
| | - Wolfgang Reiter
- Mass Spectrometry Facility, Max Perutz Labs, Vienna BioCenter, 1030 Vienna, Austria
- Department of Biochemistry and Cell Biology, Max Perutz Labs, University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9, 1030 Vienna, Austria
| | - Martha Zylka
- Center for Anatomy and Cell Biology, Medical University of Vienna, 1090 Vienna, Austria
| | - David M Hollenstein
- Mass Spectrometry Facility, Max Perutz Labs, Vienna BioCenter, 1030 Vienna, Austria
- Department of Biochemistry and Cell Biology, Max Perutz Labs, University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9, 1030 Vienna, Austria
| | - Stefan Schuckert
- Center for Anatomy and Cell Biology, Medical University of Vienna, 1090 Vienna, Austria
| | - Markus Hartl
- Mass Spectrometry Facility, Max Perutz Labs, Vienna BioCenter, 1030 Vienna, Austria
- Department of Biochemistry and Cell Biology, Max Perutz Labs, University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9, 1030 Vienna, Austria
| | - Christian Seiser
- Center for Anatomy and Cell Biology, Medical University of Vienna, 1090 Vienna, Austria
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2
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Selim O, Song C, Kumar A, Phelan R, Singh A, Federman N. A review of the therapeutic potential of histone deacetylase inhibitors in rhabdomyosarcoma. Front Oncol 2023; 13:1244035. [PMID: 37664028 PMCID: PMC10471891 DOI: 10.3389/fonc.2023.1244035] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 08/07/2023] [Indexed: 09/05/2023] Open
Abstract
This review aims to summarize the putative role of histone deacetylases (HDACs) in rhabdomyosarcoma (RMS) and the effects of HDAC inhibitors (HDACi) on RMS by elucidating and highlighting known oncogenic pathways, mechanisms of resistance, and the synergistic potential of histone deacetylase inhibitors. We searched two databases (PubMed and Google Scholar) for the keywords "Rhabdomyosarcoma, histone deacetylase, histone deacetylase inhibitors." We excluded three publications that did not permit access to the full text to review and those that focus exclusively on pleiomorphic RMS in adults. Forty-seven papers met the inclusion criteria. This review highlights that HDACi induce cytotoxicity, cell-cycle arrest, and oxidative stress in RMS cells. Ultimately, HDACi have been shown to increase apoptosis and the cessation of embryonal and alveolar RMS proliferation in vivo and in vitro, both synergistically and on its own. HDACi contain potent therapeutic potential against RMS. This review discusses the significant findings and the biological mechanisms behind the anti-cancer effects of HDACi. Additionally, this review highlights important clinical trials assessing the efficacy of HDACi in sarcomas.
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Affiliation(s)
- Omar Selim
- Clinical and Translational Science Institute, University of California, Los Angeles, CA, United States
| | - Clara Song
- Clinical and Translational Science Institute, University of California, Los Angeles, CA, United States
| | - Amy Kumar
- Clinical and Translational Science Institute, University of California, Los Angeles, CA, United States
| | - Rebecca Phelan
- Clinical and Translational Science Institute, University of California, Los Angeles, CA, United States
| | - Arun Singh
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, United States
| | - Noah Federman
- Clinical and Translational Science Institute, University of California, Los Angeles, CA, United States
- Department of Pediatrics, David Geffen School of Medicine, University of California, Los Angeles, CA, United States
- Department of Orthopaedic Surgery, David Geffen School of Medicine, University of California, Los Angeles, CA, United States
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3
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Locquet MA, Brahmi M, Blay JY, Dutour A. Radiotherapy in bone sarcoma: the quest for better treatment option. BMC Cancer 2023; 23:742. [PMID: 37563551 PMCID: PMC10416357 DOI: 10.1186/s12885-023-11232-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 07/26/2023] [Indexed: 08/12/2023] Open
Abstract
Bone sarcomas are rare tumors representing 0.2% of all cancers. While osteosarcoma and Ewing sarcoma mainly affect children and young adults, chondrosarcoma and chordoma have a preferential incidence in people over the age of 40. Despite this range in populations affected, all bone sarcoma patients require complex transdisciplinary management and share some similarities. The cornerstone of all bone sarcoma treatment is monobloc resection of the tumor with adequate margins in healthy surrounding tissues. Adjuvant chemo- and/or radiotherapy are often included depending on the location of the tumor, quality of resection or presence of metastases. High dose radiotherapy is largely applied to allow better local control in case of incomplete primary tumor resection or for unresectable tumors. With the development of advanced techniques such as proton, carbon ion therapy, radiotherapy is gaining popularity for the treatment of bone sarcomas, enabling the delivery of higher doses of radiation, while sparing surrounding healthy tissues. Nevertheless, bone sarcomas are radioresistant tumors, and some mechanisms involved in this radioresistance have been reported. Hypoxia for instance, can potentially be targeted to improve tumor response to radiotherapy and decrease radiation-induced cellular toxicity. In this review, the benefits and drawbacks of radiotherapy in bone sarcoma will be addressed. Finally, new strategies combining a radiosensitizing agent and radiotherapy and their applicability in bone sarcoma will be presented.
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Affiliation(s)
- Marie-Anaïs Locquet
- Cell Death and Pediatric Cancer Team, Cancer Initiation and Tumor Cell Identity Department, INSERM1052, CNRS5286, Cancer Research Center of Lyon, F-69008, Lyon, France
| | - Mehdi Brahmi
- Department of Medical Oncology, Centre Leon Berard, Unicancer Lyon, 69008, Lyon, France
| | - Jean-Yves Blay
- Cell Death and Pediatric Cancer Team, Cancer Initiation and Tumor Cell Identity Department, INSERM1052, CNRS5286, Cancer Research Center of Lyon, F-69008, Lyon, France
- Department of Medical Oncology, Centre Leon Berard, Unicancer Lyon, 69008, Lyon, France
- Université Claude Bernard Lyon I, Lyon, France
| | - Aurélie Dutour
- Cell Death and Pediatric Cancer Team, Cancer Initiation and Tumor Cell Identity Department, INSERM1052, CNRS5286, Cancer Research Center of Lyon, F-69008, Lyon, France.
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4
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Gnedina OO, Morshneva AV, Skvortsova EV, Igotti MV. HDAC Inhibitor Sodium Butyrate Attenuates the DNA Repair in Transformed but Not in Normal Fibroblasts. Int J Mol Sci 2022; 23:ijms23073517. [PMID: 35408878 PMCID: PMC8998589 DOI: 10.3390/ijms23073517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/19/2022] [Accepted: 03/21/2022] [Indexed: 11/30/2022] Open
Abstract
Many cancer therapy strategies cause DNA damage leading to the death of tumor cells. The DNA damage response (DDR) modulators are considered as promising candidates for use in combination therapy to enhance the efficacy of DNA-damage-mediated cancer treatment. The inhibitors of histone deacetylases (HDACis) exhibit selective antiproliferative effects against transformed and tumor cells and could enhance tumor cell sensitivity to genotoxic agents, which is partly attributed to their ability to interfere with DDR. Using the comet assay and host-cell reactivation of transcription, as well as γH2AX staining, we have shown that sodium butyrate inhibited DNA double-strand break (DSB) repair of both endo- and exogenous DNA in transformed but not in normal cells. According to our data, the dysregulation of the key repair proteins, especially the phosphorylated Mre11 pool decrease, is the cause of DNA repair impairment in transformed cells. The inability of HDACis to obstruct DSB repair in normal cells shown in this work demonstrates the advantages of HDACis in combination therapy with genotoxic agents to selectively enhance their cytotoxic activity in cancer cells.
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5
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Wang X, Zhao J. Targeted Cancer Therapy Based on Acetylation and Deacetylation of Key Proteins Involved in Double-Strand Break Repair. Cancer Manag Res 2022; 14:259-271. [PMID: 35115826 PMCID: PMC8800007 DOI: 10.2147/cmar.s346052] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 01/13/2022] [Indexed: 12/22/2022] Open
Abstract
DNA double-strand breaks (DSBs) play an important role in promoting genomic instability and cell death. The precise repair of DSBs is essential for maintaining genome integrity during cancer progression, and inducing genomic instability or blocking DNA repair is an important mechanism through which chemo/radiotherapies exert killing effects on cancer cells. The two main pathways that facilitate the repair of DSBs in cancer cells are homologous recombination (HR) and non-homologous end-joining (NHEJ). Accumulating data suggest that the acetylation and deacetylation of DSB repair proteins regulate the initiation and progression of the cellular response to DNA DSBs, which may further affect the chemosensitivity or radiosensitivity of cancer cells. Here, we focus on the role of acetylation/deacetylation in the regulation of ataxia-telangiectasia mutated, Rad51, and 53BP1 in the HR pathway, as well as the relevant roles of PARP1 and Ku70 in NHEJ. Notably, several histone deacetylase (HDAC) inhibitors targeting HR or NHEJ have been demonstrated to enhance chemo/radiosensitivity in preclinical studies. This review highlights the essential role of acetylation/deacetylation in the regulation of DSB repair proteins, suggesting that HDAC inhibitors targeting the HR or NHEJ pathways that downregulate DNA DSB repair genes may be worthwhile cancer therapeutic agents.
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Affiliation(s)
- Xiwen Wang
- Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, People’s Republic of China
| | - Jungang Zhao
- Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, People’s Republic of China
- Correspondence: Jungang Zhao, Department of Thoracic Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, People’s Republic of China, Tel/Fax +86 13889311066, Email
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6
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Johnson AM, Bennett PV, Sanidad KZ, Hoang A, Jardine JH, Keszenman DJ, Wilson PF. Evaluation of Histone Deacetylase Inhibitors as Radiosensitizers for Proton and Light Ion Radiotherapy. Front Oncol 2021; 11:735940. [PMID: 34513712 PMCID: PMC8426582 DOI: 10.3389/fonc.2021.735940] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Accepted: 07/29/2021] [Indexed: 12/23/2022] Open
Abstract
Significant opportunities remain for pharmacologically enhancing the clinical effectiveness of proton and carbon ion-based radiotherapies to achieve both tumor cell radiosensitization and normal tissue radioprotection. We investigated whether pretreatment with the hydroxamate-based histone deacetylase inhibitors (HDACi) SAHA (vorinostat), M344, and PTACH impacts radiation-induced DNA double-strand break (DSB) induction and repair, cell killing, and transformation (acquisition of anchorage-independent growth in soft agar) in human normal and tumor cell lines following gamma ray and light ion irradiation. Treatment of normal NFF28 primary fibroblasts and U2OS osteosarcoma, A549 lung carcinoma, and U87MG glioma cells with 5–10 µM HDACi concentrations 18 h prior to cesium-137 gamma irradiation resulted in radiosensitization measured by clonogenic survival assays and increased levels of colocalized gamma-H2AX/53BP1 foci induction. We similarly tested these HDACi following irradiation with 200 MeV protons, 290 MeV/n carbon ions, and 350 MeV/n oxygen ions delivered in the Bragg plateau region. Unlike uniform gamma ray radiosensitization, effects of HDACi pretreatment were unexpectedly cell type and ion species-dependent with C-12 and O-16 ion irradiations showing enhanced G0/G1-phase fibroblast survival (radioprotection) and in some cases reduced or absent tumor cell radiosensitization. DSB-associated foci levels were similar for proton-irradiated DMSO control and SAHA-treated fibroblast cultures, while lower levels of induced foci were observed in SAHA-pretreated C-12 ion-irradiated fibroblasts. Fibroblast transformation frequencies measured for all radiation types were generally LET-dependent and lowest following proton irradiation; however, both gamma and proton exposures showed hyperlinear transformation induction at low doses (≤25 cGy). HDACi pretreatments led to overall lower transformation frequencies at low doses for all radiation types except O-16 ions but generally led to higher transformation frequencies at higher doses (>50 cGy). The results of these in vitro studies cast doubt on the clinical efficacy of using HDACi as radiosensitizers for light ion-based hadron radiotherapy given the mixed results on their radiosensitization effectiveness and related possibility of increased second cancer induction.
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Affiliation(s)
- Alicia M Johnson
- Biology Department, Brookhaven National Laboratory, Upton, NY, United States
| | - Paula V Bennett
- Biology Department, Brookhaven National Laboratory, Upton, NY, United States
| | - Katherine Z Sanidad
- Biology Department, Brookhaven National Laboratory, Upton, NY, United States
| | - Anthony Hoang
- Biology Department, Brookhaven National Laboratory, Upton, NY, United States
| | - James H Jardine
- Biology Department, Brookhaven National Laboratory, Upton, NY, United States
| | - Deborah J Keszenman
- Biology Department, Brookhaven National Laboratory, Upton, NY, United States.,Laboratorio de Radiobiología Médica y Ambiental, Grupo de Biofisicoquímica, Centro Universitario Regional Litoral Norte, Universidad de la República (UdelaR), Salto, Uruguay
| | - Paul F Wilson
- Biology Department, Brookhaven National Laboratory, Upton, NY, United States.,Department of Radiation Oncology, University of California-Davis, Sacramento, CA, United States
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7
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Torres HM, VanCleave AM, Vollmer M, Callahan DL, Smithback A, Conn JM, Rodezno-Antunes T, Gao Z, Cao Y, Afeworki Y, Tao J. Selective Targeting of Class I Histone Deacetylases in a Model of Human Osteosarcoma. Cancers (Basel) 2021; 13:4199. [PMID: 34439353 PMCID: PMC8394112 DOI: 10.3390/cancers13164199] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/06/2021] [Accepted: 08/13/2021] [Indexed: 02/01/2023] Open
Abstract
Dysregulation of histone deacetylases (HDACs) is associated with the pathogenesis of human osteosarcoma, which may present an epigenetic vulnerability as well as a therapeutic target. Domatinostat (4SC-202) is a next-generation class I HDAC inhibitor that is currently being used in clinical research for certain cancers, but its impact on human osteosarcoma has yet to be explored. In this study, we report that 4SC-202 inhibits osteosarcoma cell growth in vitro and in vivo. By analyzing cell function in vitro, we show that the anti-tumor effect of 4SC-202 involves the combined induction of cell-cycle arrest at the G2/M phase and apoptotic program, as well as a reduction in cell invasion and migration capabilities. We also found that 4SC-202 has little capacity to promote osteogenic differentiation. Remarkably, 4SC-202 revised the global transcriptome and induced distinct signatures of gene expression in vitro. Moreover, 4SC-202 decreased tumor growth of established human tumor xenografts in immunodeficient mice in vivo. We further reveal key targets regulated by 4SC-202 that contribute to tumor cell growth and survival, and canonical signaling pathways associated with progression and metastasis of osteosarcoma. Our study suggests that 4SC-202 may be exploited as a valuable drug to promote more effective treatment of patients with osteosarcoma and provide molecular insights into the mechanism of action of class I HDAC inhibitors.
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Affiliation(s)
- Haydee M. Torres
- Cancer Biology & Immunotherapies Group at Sanford Research, Sioux Falls, SD 57104, USA; (H.M.T.); (A.M.V.); (T.R.-A.); (Y.C.)
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, SD 57007, USA
| | - Ashley M. VanCleave
- Cancer Biology & Immunotherapies Group at Sanford Research, Sioux Falls, SD 57104, USA; (H.M.T.); (A.M.V.); (T.R.-A.); (Y.C.)
| | - Mykayla Vollmer
- Medical Student Research Program, University of South Dakota, Vermillion, SD 57069, USA;
| | - Dakota L. Callahan
- Sanford Program for Undergraduate Research, University of Sioux Falls, Sioux Falls, SD 57104, USA;
| | - Austyn Smithback
- Sanford PROMISE Scholar Program, Harrisburg High School, Sioux Falls, SD 57104, USA;
| | - Josephine M. Conn
- Sanford Program for Undergraduate Research, Carleton College, Northfield, MN 55057, USA;
| | - Tania Rodezno-Antunes
- Cancer Biology & Immunotherapies Group at Sanford Research, Sioux Falls, SD 57104, USA; (H.M.T.); (A.M.V.); (T.R.-A.); (Y.C.)
| | - Zili Gao
- Flow Cytometry Core at Sanford Research, Sioux Falls, SD 57104, USA;
| | - Yuxia Cao
- Cancer Biology & Immunotherapies Group at Sanford Research, Sioux Falls, SD 57104, USA; (H.M.T.); (A.M.V.); (T.R.-A.); (Y.C.)
| | - Yohannes Afeworki
- Functional Genomics & Bioinformatics Core Facility at Sanford Research, Sioux Falls, SD 57104, USA;
| | - Jianning Tao
- Cancer Biology & Immunotherapies Group at Sanford Research, Sioux Falls, SD 57104, USA; (H.M.T.); (A.M.V.); (T.R.-A.); (Y.C.)
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, SD 57007, USA
- Department of Pediatrics, Sanford School of Medicine, University of South Dakota, Vermillion, SD 57069, USA
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8
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Downregulation of Mcl-1 by Panobinostat Potentiates Proton Beam Therapy in Hepatocellular Carcinoma Cells. Cells 2021; 10:cells10030554. [PMID: 33806487 PMCID: PMC7999709 DOI: 10.3390/cells10030554] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 02/28/2021] [Accepted: 03/02/2021] [Indexed: 12/12/2022] Open
Abstract
Epigenetic modulation by histone deacetylase (HDAC) inhibitors is an attractive anti-cancer strategy for diverse hematological and solid cancers. Herein, we explored the relative effectiveness of the pan-HDAC inhibitor panobinostat in combination with proton over X-ray irradiation in HCC cells. Clonogenic survival assays revealed that radiosensitization of Huh7 and Hep3B cells by panobinostat was more evident when combined with protons than X-rays. Panobinostat increased G2/M arrest and production of intracellular reactive oxygen species, which was further enhanced by proton irradiation. Immunofluorescence staining of γH2AX showed that panobinostat enhanced proton-induced DNA damage. Panobinostat dose-dependently decreased expression of an anti-apoptotic protein, Mcl-1, concomitant with increasing acetylation of histone H4. The combination of panobinostat with proton irradiation enhanced apoptotic cell death to a greater extent than that with X-ray irradiation. Depletion of Mcl-1 by RNA interference enhanced proton-induced apoptosis and proton radiosensitization, suggesting a potential role of Mcl-1 in determining proton sensitivity. Together, our findings suggest that panobinostat may be a promising combination agent for proton beam therapy in HCC treatment.
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9
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HDAC1 regulates the chemosensitivity of laryngeal carcinoma cells via modulation of interleukin-8 expression. Eur J Pharmacol 2021; 896:173923. [PMID: 33539818 DOI: 10.1016/j.ejphar.2021.173923] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 01/14/2021] [Accepted: 01/29/2021] [Indexed: 01/28/2023]
Abstract
Chemotherapies such as 5-fluorouracil (5-FU) and cisplatin (CDDP) have been widely used to treat laryngeal squamous cell carcinoma (LSCC), the second most common head and neck squamous cell carcinoma. However, chemoresistance seriously impairs chemotherapeutic efficacy. Our present study reveals that 5-FU and CDDP treatment increase the expression of histone deacetylase 1 (HDAC1) in LSCC cells. Consistently, increased levels of HDAC1 are observed in chemoresistant cells. Knockdown of HDAC1 significantly restores the sensitivity of LSCC cells, as HDAC1 increases the expression of interleukin-8 (IL-8), which is essential for LSCC chemoresistance. Mechanistically, HDAC1 directly initiates the transcription of IL-8 though binding to its promoter. Simultaneously, si-HDAC1 increases the levels of miR-93, which binds to the 3'UTR of IL-8 mRNA to trigger its degradation. In summary, the HDAC1/IL-8 axis can confer chemotherapeutic resistance to LSCC cells.
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10
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Shirbhate E, Patel P, Patel VK, Veerasamy R, Sharma PC, Rajak H. The combination of histone deacetylase inhibitors and radiotherapy: a promising novel approach for cancer treatment. Future Oncol 2020; 16:2457-2469. [PMID: 32815411 DOI: 10.2217/fon-2020-0385] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
HDAC inhibitors (HDACi) play an essential role in various cellular processes, such as differentiation and transcriptional regulation of key genes and cytostatic factors, cell cycle arrest and apoptosis that facilitates the targeting of epigenome of eukaryotic cells. In the majority of cancers, only a handful of patients receive optimal benefit from chemotherapeutics. Additionally, there is emerging interest in the use of HDACi to modulate the effects of ionizing radiations. The use of HDACi with radiotherapy, with the goal of reaching dissimilar, often distinct pathways or multiple biological targets, with the expectation of synergistic effects, reduced toxicity and diminished intrinsic and acquired resistance, conveys an approach of increasing interest. In this review, the clinical potential of HDACi in combination with radiotherapy is described as an efficient synergy for cancer treatment will be overviewed.
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Affiliation(s)
- Ekta Shirbhate
- Institute of Pharmaceutical Sciences, Guru Ghasidas University, Bilaspur-495 009, Chhattisgarh, India
| | - Preeti Patel
- Institute of Pharmaceutical Sciences, Guru Ghasidas University, Bilaspur-495 009, Chhattisgarh, India
| | - Vijay K Patel
- Institute of Pharmaceutical Sciences, Guru Ghasidas University, Bilaspur-495 009, Chhattisgarh, India
| | - Ravichandran Veerasamy
- Faculty of Pharmacy, AIMST University, Semeling, 08100 Bedong, Kedah Darul Aman, Malaysia
| | - Prabodh C Sharma
- Institute of Pharmaceutical Sciences, Kurukshetra University, Kurukshetra-136 119, Haryana, India
| | - Harish Rajak
- Institute of Pharmaceutical Sciences, Guru Ghasidas University, Bilaspur-495 009, Chhattisgarh, India
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11
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Aleksandrov R, Hristova R, Stoynov S, Gospodinov A. The Chromatin Response to Double-Strand DNA Breaks and Their Repair. Cells 2020; 9:cells9081853. [PMID: 32784607 PMCID: PMC7464352 DOI: 10.3390/cells9081853] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 02/07/2023] Open
Abstract
Cellular DNA is constantly being damaged by numerous internal and external mutagenic factors. Probably the most severe type of insults DNA could suffer are the double-strand DNA breaks (DSBs). They sever both DNA strands and compromise genomic stability, causing deleterious chromosomal aberrations that are implicated in numerous maladies, including cancer. Not surprisingly, cells have evolved several DSB repair pathways encompassing hundreds of different DNA repair proteins to cope with this challenge. In eukaryotic cells, DSB repair is fulfilled in the immensely complex environment of the chromatin. The chromatin is not just a passive background that accommodates the multitude of DNA repair proteins, but it is a highly dynamic and active participant in the repair process. Chromatin alterations, such as changing patterns of histone modifications shaped by numerous histone-modifying enzymes and chromatin remodeling, are pivotal for proficient DSB repair. Dynamic chromatin changes ensure accessibility to the damaged region, recruit DNA repair proteins, and regulate their association and activity, contributing to DSB repair pathway choice and coordination. Given the paramount importance of DSB repair in tumorigenesis and cancer progression, DSB repair has turned into an attractive target for the development of novel anticancer therapies, some of which have already entered the clinic.
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12
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Sin Y, Yoshimatsu Y, Noguchi R, Tsuchiya R, Sei A, Ono T, Toki S, Kobayashi E, Arakawa A, Sugiyama M, Yoshida A, Kawai A, Kondo T. Establishment and characterization of a novel alveolar rhabdomyosarcoma cell line, NCC-aRMS1-C1. Hum Cell 2020; 33:1311-1320. [PMID: 32715445 DOI: 10.1007/s13577-020-00403-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 07/17/2020] [Indexed: 02/07/2023]
Abstract
Alveolar rhabdomyosarcoma (aRMS) is a histological subtype of RMS, which is the most common pediatric and adolescent soft-tissue sarcoma, accounting for 3-4% of all pediatric malignancies. Patient-derived cells are essential tools for understanding the molecular mechanisms of poor prognosis and developing novel anti-cancer drugs. However, only a limited number of well-characterized cell lines for rhabdomyosarcoma from public cell banks is available. Therefore, we aimed to establish a novel cell line of aRMS from the tumor tissue of a patient with aRMS. The cell line was established from surgically resected tumor tissue from a 4-year-old male patient diagnosed with stage III, T2bN1M0 aRMS and was named as NCC-aRMS1-C1. The cells were maintained for more than 3 months under tissue culture conditions and passaged more than 20 times. We confirmed the presence of identical fusion gene such as PAX7-FOXO1 in both the original tumor and NCC-aRMS1-C1. The cells exhibited spheroid formation and invasion. We found that docetaxel, vincristine, ifosfamide, dacarbazine, and romidepsin showed remarkable growth-suppressive effects on the NCC-aRMS1-C1 cells. In conclusion, the NCC-aRMS1-C1 cell line exhibited characteristics that may correspond to the lymph node metastasis in aRMS and mirror its less aggressive features. Thus, it may be useful for innovative seeds for novel therapeutic strategies.
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Affiliation(s)
- Yooksil Sin
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Yuki Yoshimatsu
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Rei Noguchi
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Ryuto Tsuchiya
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba, 260-8670, Japan
| | - Akane Sei
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Takuya Ono
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Shunichi Toki
- Department of Musculoskeletal Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Eisuke Kobayashi
- Department of Musculoskeletal Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Ayumu Arakawa
- Department of Pediatric Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Masanaka Sugiyama
- Department of Pediatric Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Akihiko Yoshida
- Department of Diagnosis Pathology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Akira Kawai
- Department of Musculoskeletal Oncology, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Tadashi Kondo
- Division of Rare Cancer Research, National Cancer Center Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan.
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13
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Paillas S, Then CK, Kilgas S, Ruan JL, Thompson J, Elliott A, Smart S, Kiltie AE. The Histone Deacetylase Inhibitor Romidepsin Spares Normal Tissues While Acting as an Effective Radiosensitizer in Bladder Tumors in Vivo. Int J Radiat Oncol Biol Phys 2020; 107:212-221. [PMID: 31987970 PMCID: PMC7181176 DOI: 10.1016/j.ijrobp.2020.01.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/10/2020] [Accepted: 01/13/2020] [Indexed: 01/29/2023]
Abstract
PURPOSE Muscle-invasive bladder cancer has a 40% to 60% 5-year survival rate with radical treatment by surgical removal of the bladder or radiation therapy-based bladder preservation techniques, including concurrent chemoradiation. Elderly patients cannot tolerate current chemoradiation therapy regimens and often receive only radiation therapy, which is less effective. We urgently need effective chemotherapy agents for use with radiation therapy combinations that are nontoxic to normal tissues and tolerated by elderly patients. METHODS AND MATERIALS We have identified histone deacetylase (HDAC) inhibitors as promising agents to study. Pan-HDAC inhibition, using panobinostat, is a good strategy for radiosensitization, but more selective agents may be more useful radiosensitizers in a clinical setting, resulting in fewer systemic side effects. Herein, we study the HDAC class I-selective agent romidepsin, which we predict to have fewer off-target effects than panobinostat while maintaining an effective level of tumor radiosensitization. RESULTS In vitro effects of romidepsin were assessed by clonogenic assay and showed that romidepsin was effective in the nanomolar range in different bladder cancer cells and radiosensitized these cells. The radiosensitizing effect of romidepsin was confirmed in vivo using superficial xenografts. The drug/irradiation combination treatment resulted in significant tumor growth delay but did not increase the severity of acute (3.75 days) intestinal normal tissue toxicity or late toxicity at 29 weeks. Moreover, we showed that romidepsin treatment impaired both homologous recombination and nonhomologous end joining DNA repair pathways, suggesting that the disruption of DNA repair pathways caused by romidepsin is a key mechanism for its radiosensitizing effect in bladder cancer cells. CONCLUSIONS This study demonstrates that romidepsin is an effective radiosensitizer in vitro and in vivo and does not increase the acute and late toxicity after ionizing radiation. Romidepsin is already in clinical use for the cutaneous T-cell lymphoma, but a phase 1 clinical trial of romidepsin as a radiosensitizer could be considered in muscle-invasive bladder cancer.
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Affiliation(s)
- Salome Paillas
- Department of Oncology, CRUK/MRC Oxford Institute for Radiation Oncology, University of Oxford, United Kingdom
| | - Chee K Then
- Department of Oncology, CRUK/MRC Oxford Institute for Radiation Oncology, University of Oxford, United Kingdom
| | - Susan Kilgas
- Department of Oncology, CRUK/MRC Oxford Institute for Radiation Oncology, University of Oxford, United Kingdom
| | - Jia-Ling Ruan
- Department of Oncology, CRUK/MRC Oxford Institute for Radiation Oncology, University of Oxford, United Kingdom
| | - James Thompson
- Department of Oncology, CRUK/MRC Oxford Institute for Radiation Oncology, University of Oxford, United Kingdom
| | - Amy Elliott
- Department of Oncology, CRUK/MRC Oxford Institute for Radiation Oncology, University of Oxford, United Kingdom
| | - Sean Smart
- Department of Oncology, CRUK/MRC Oxford Institute for Radiation Oncology, University of Oxford, United Kingdom
| | - Anne E Kiltie
- Department of Oncology, CRUK/MRC Oxford Institute for Radiation Oncology, University of Oxford, United Kingdom.
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14
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Targeting the Cancer Epigenome with Histone Deacetylase Inhibitors in Osteosarcoma. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1258:55-75. [PMID: 32767234 DOI: 10.1007/978-3-030-43085-6_4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Epigenetic deregulation is an emerging hallmark of cancer that enables tumor cells to escape surveillance by tumor suppressors and ultimately progress. The structure of the epigenome consists of covalent modifications of chromatin components, including acetylation by histone acetyltransferases (HATs) and deacetylation by histone deacetylases (HDACs). Targeting these enzymes with inhibitors to restore epigenetic homeostasis has been explored for many cancers. Osteosarcoma, an aggressive bone malignancy that primarily affects children and young adults, is notable for widespread genetic and epigenetic instability. This may explain why therapy directed at unique molecular pathways has failed to substantially improve outcomes in osteosarcoma over the past four decades. In this review, we discuss the potential of targeting the cancer epigenome, with a focus on histone deacetylase inhibitors (HDACi) for osteosarcoma. We additionally highlight the safety and tolerance of HDACi, combination chemotherapy with HDACi, and the ongoing challenges in the development of these agents.
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15
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Biau J, Chautard E, Verrelle P, Dutreix M. Altering DNA Repair to Improve Radiation Therapy: Specific and Multiple Pathway Targeting. Front Oncol 2019; 9:1009. [PMID: 31649878 PMCID: PMC6795692 DOI: 10.3389/fonc.2019.01009] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 09/19/2019] [Indexed: 12/16/2022] Open
Abstract
Radiation therapy (RT) is widely used in cancer care strategies. Its effectiveness relies mainly on its ability to cause lethal damage to the DNA of cancer cells. However, some cancers have shown to be particularly radioresistant partly because of efficient and redundant DNA repair capacities. Therefore, RT efficacy might be enhanced by using drugs that can disrupt cancer cells' DNA repair machinery. Here we review the recent advances in the development of novel inhibitors of DNA repair pathways in combination with RT. A large number of these compounds are the subject of preclinical/clinical studies and target key enzymes involved in one or more DNA repair pathways. A totally different strategy consists of mimicking DNA double-strand breaks via small interfering DNA (siDNA) to bait the whole DNA repair machinery, leading to its global inhibition.
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Affiliation(s)
- Julian Biau
- Institut Curie, PSL Research University, Centre de Recherche, Paris, France.,UMR3347, CNRS, Orsay, France.,U1021, INSERM, Orsay, France.,Université Paris Sud, Orsay, France.,Université Clermont Auvergne, INSERM, U1240 IMoST, Clermont Ferrand, France.,Radiotherapy Department, Université Clermont Auvergne, Centre Jean Perrin, Clermont-Ferrand, France
| | - Emmanuel Chautard
- Université Clermont Auvergne, INSERM, U1240 IMoST, Clermont Ferrand, France.,Pathology Department, Université Clermont Auvergne, Centre Jean Perrin, Clermont-Ferrand, France
| | - Pierre Verrelle
- Institut Curie, PSL Research University, Centre de Recherche, Paris, France.,Radiotherapy Department, Université Clermont Auvergne, Centre Jean Perrin, Clermont-Ferrand, France.,U1196, INSERM, UMR9187, CNRS, Orsay, France.,Radiotherapy Department, Institut Curie Hospital, Paris, France
| | - Marie Dutreix
- Institut Curie, PSL Research University, Centre de Recherche, Paris, France.,UMR3347, CNRS, Orsay, France.,U1021, INSERM, Orsay, France.,Université Paris Sud, Orsay, France
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16
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CRIF1 as a potential target to improve the radiosensitivity of osteosarcoma. Proc Natl Acad Sci U S A 2019; 116:20511-20516. [PMID: 31548420 DOI: 10.1073/pnas.1906578116] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Resistance to ionizing radiation (IR), which is a conventional treatment for osteosarcoma that cannot be resected, undermines the efficacy of this therapy. However, the mechanism by which IR induces radioresistance in osteosarcoma is not defined. Here, we report that CR6-interacting factor-1 (CRIF1) is highly expressed in osteosarcoma and undergoes nuclear-cytoplasmic shuttling of cyclin-dependent kinase 2 (CDK2) after IR. Osteosarcoma cells lacking CRIF1 show increased sensitivity to IR, which is associated with delayed DNA damage repair, inactivated G1/S checkpoint, and mitochondrial dysfunction. CRIF1 interacts with the DNA damage checkpoint regulator CDK2, and CRIF1 and CDK2 colocalize in the nucleus after IR. Nuclear localization of CDK2 is associated with phosphorylation changes that promote DNA repair and activation of the G1/S checkpoint. CRIF1 knockdown synergized with IR in an in vivo osteosarcoma model, leading to tumor regression. Based on these findings, we identify CRIF1 as a potential therapeutic target in osteosarcoma that can increase the efficacy of radiotherapy. More broadly, our findings may provide insights into the mechanism for other types of radioresistant cancers and be exploited for therapeutic ends.
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17
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Zwicker F, Hauswald H, Debus J, Huber PE, Weber KJ. Impact of dimethyl sulfoxide on irradiation-related DNA double-strand-break induction, -repair and cell survival. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2019; 58:417-424. [PMID: 31127368 DOI: 10.1007/s00411-019-00797-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Accepted: 05/11/2019] [Indexed: 06/09/2023]
Abstract
Dimethyl sulfoxide (DMSO) is an effective radical scavenger and, when added to cells, reduces the initial number of radiation-induced DNA double-strand breaks (DSB). The aim of this study was to investigate modification by DMSO of both DSB induction and DSB repair by means of pulsed-field gel electrophoresis (PFGE) as well as gamma-H2AX immunofluorescence staining. WiDr cells (human colon carcinoma provided by DKFZ) were incubated with 2% DMSO for 2 h (or mock-treated) prior to irradiation with varying X-ray doses and subsequent incubation for repair. Sample processing for PFGE analysis or counting of γ-H2AX foci was performed according to standard protocols. Effects on apoptosis induction and cell survival were investigated additionally by standard protocols. DMSO reduced DSB yield after 20-80 Gy measured by PFGE. A qualitatively similar result was found after low-dose irradiation (1 Gy) using γ-H2AX immunofluorescence staining. During incubation for repair, both DNA fragment rejoining (PFGE) as well as γ-H2AX foci removal occurred at a reduced rate when cells had been pre-treated with DMSO. But this effect was clearly more pronounced for the PFGE-analyzed double-strand breakage, particularly at early repair times. WiDr cells treated with DMSO (2%) showed a significantly increased clonogenic survival after irradiation doses above 8 Gy. Apoptosis rates were not changed by DMSO. The radio-protective effect of DMSO, well known from other PFGE studies, could be confirmed for the formation of γ-H2AX foci. DSB generated in the presence of DMSO were less rapidly repaired. DMSO showed radio-protective effects on clonogenic survival but not on apoptosis.
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Affiliation(s)
- Felix Zwicker
- Clinical Cooperation Unit Molecular Radiation Oncology, German Cancer Research Center (DKFZ) E055, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany.
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany.
| | - Henrik Hauswald
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany
| | - Jürgen Debus
- Clinical Cooperation Unit Molecular Radiation Oncology, German Cancer Research Center (DKFZ) E055, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany
| | - Peter E Huber
- Clinical Cooperation Unit Molecular Radiation Oncology, German Cancer Research Center (DKFZ) E055, Im Neuenheimer Feld 280, 69120, Heidelberg, Germany
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany
| | - Klaus-Josef Weber
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany
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18
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Pal A, Chiu HY, Taneja R. Genetics, epigenetics and redox homeostasis in rhabdomyosarcoma: Emerging targets and therapeutics. Redox Biol 2019; 25:101124. [PMID: 30709791 PMCID: PMC6859585 DOI: 10.1016/j.redox.2019.101124] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 01/20/2019] [Accepted: 01/24/2019] [Indexed: 12/16/2022] Open
Abstract
Rhabdomyosarcoma (RMS) is the most common soft tissue sarcoma accounting for 5-8% of malignant tumours in children and adolescents. Children with high risk disease have poor prognosis. Anti-RMS therapies include surgery, radiation and combination chemotherapy. While these strategies improved survival rates, they have plateaued since 1990s as drugs that target differentiation and self-renewal of tumours cells have not been identified. Moreover, prevailing treatments are aggressive with drug resistance and metastasis causing failure of several treatment regimes. Significant advances have been made recently in understanding the genetic and epigenetic landscape in RMS. These studies have identified novel diagnostic and prognostic markers and opened new avenues for treatment. An important target identified in high throughput drug screening studies is reactive oxygen species (ROS). Indeed, many drugs in clinical trials for RMS impact tumour progression through ROS. In light of such emerging evidence, we discuss recent findings highlighting key pathways, epigenetic alterations and their impacts on ROS that form the basis of developing novel molecularly targeted therapies in RMS. Such targeted therapies in combination with conventional therapy could reduce adverse side effects in young survivors and lead to a decline in long-term morbidity.
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Affiliation(s)
- Ananya Pal
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore
| | - Hsin Yao Chiu
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore
| | - Reshma Taneja
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore.
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19
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Teknos TN, Grecula J, Agrawal A, Old MO, Ozer E, Carrau R, Kang S, Rocco J, Blakaj D, Diavolitsis V, Kumar B, Kumar P, Pan Q, Palettas M, Wei L, Baiocchi R, Savvides P. A phase 1 trial of Vorinostat in combination with concurrent chemoradiation therapy in the treatment of advanced staged head and neck squamous cell carcinoma. Invest New Drugs 2018; 37:702-710. [PMID: 30569244 DOI: 10.1007/s10637-018-0696-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 11/12/2018] [Indexed: 12/12/2022]
Abstract
Purpose Vorinostat is a potent HDAC inhibitor that sensitizes head and neck squamous cell carcinoma (HNSCC) to cytotoxic therapy while sparing normal epithelium. The primary objective of this Phase I study was to determine the maximally tolerated dose (MTD) and safety of Vorinostat in combination with standard chemoradiation therapy treatment in HNSCC. Patients and Methods Eligible patients had pathologically confirmed Stage III, IVa, IVb HNSCC, that was unresectable or borderline resectable involving the larynx, hypopharynx, nasopharynx, and oropharynx. Vorinostat was administered at the assigned dosage level (100-400 mg, three times weekly) in a standard 3 + 3 dose escalation design. Vorinostat therapy began 1 week prior to initiation of standard, concurrent chemoradiation therapy and continued during the entire course of therapy. Results Twenty six patients met eligibility criteria and completed the entire protocol. The primary tumor sites included tonsil (12), base of tongue (9), posterior pharyngeal wall (1), larynx (4) and hypopharynx (3). Of the 26 patients, 17 were HPV-positive and 9 were HPV-negative. The MTD of Vorinostat was 300 mg administered every other day. Anemia (n = 23/26) and leukopenia (n = 20/26) were the most commonly identified toxicities. The most common Grade3/4 events included leukopenia (n = 11) and lymphopenia (n = 17). No patient had Grade IV mucositis, dermatitis or xerostomia. The median follow time was 33.8 months (range 1.6-82.9 months). Twenty four of 26 (96.2%) patients had a complete response to therapy. Conclusion Vorinostat in combination with concurrent chemoradiation therapy is a safe and highly effective treatment regimen in HNSCC. There was a high rate of complete response to therapy with toxicity rates comparable, if not favorable to existing therapies. Further investigation in Phase II and III trials is strongly recommended.
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Affiliation(s)
- Theodoros N Teknos
- Otolaryngology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA. .,Seidman Cancer Center, University Hospitals Cleveland Medical Center, Cleveland, OH, USA.
| | - J Grecula
- Radiation Oncology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - A Agrawal
- Otolaryngology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - M O Old
- Otolaryngology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - E Ozer
- Otolaryngology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - R Carrau
- Otolaryngology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - S Kang
- Otolaryngology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - J Rocco
- Otolaryngology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - D Blakaj
- Radiation Oncology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - V Diavolitsis
- Radiation Oncology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - B Kumar
- Otolaryngology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - P Kumar
- Otolaryngology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - Q Pan
- Otolaryngology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - M Palettas
- Center for Biostatistics, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - L Wei
- Center for Biostatistics, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - R Baiocchi
- Hematology-Medical Oncology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
| | - P Savvides
- Hematology-Medical Oncology, The Ohio State University Comprehensive Cancer Center - Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Columbus, OH, USA
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20
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Perona M, Thomasz L, Rossich L, Rodriguez C, Pisarev MA, Rosemblit C, Cremaschi GA, Dagrosa MA, Juvenal GJ. Radiosensitivity enhancement of human thyroid carcinoma cells by the inhibitors of histone deacetylase sodium butyrate and valproic acid. Mol Cell Endocrinol 2018; 478:141-150. [PMID: 30125607 DOI: 10.1016/j.mce.2018.08.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/16/2018] [Accepted: 08/16/2018] [Indexed: 01/04/2023]
Abstract
Radiotherapy is one of the leading treatments for clinical cancer therapy. External beam radiotherapy has been proposed as an adjuvant treatment for patients bearing differentiated thyroid cancer refractory to conventional therapy. Our purpose was to study the combined effect of HDAC inhibitors (HDACi) and ionizing irradiation in thyroid cancer cell lines (Nthy-ori 3-1, WRO, TPC-1 and 8505c). HDACi radiosensitized thyroid cancer cells as evidenced by the reduction of survival fraction, whereas they had no effect in the normal cells. HDACi enhanced radiation-induced cell death in WRO cells. Gamma-H2AX foci number increased and persisted long after ionizing exposure in the HDACi-treated cells (WRO and TPC-1). Moreover, the expression of the repair-related gene Ku80 was differentially modulated only in the cancer cells, by the compounds at the protein and/or mRNA levels. We present in vitro evidence that HDACi can enhance the radiosensitivity of human thyroid cancer cells.
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Affiliation(s)
- Marina Perona
- Dept. of Radiobiology (CAC), National Atomic Energy Commission (CNEA), Av. Libertador 8250, 1429, San Martín, Buenos Aires, Argentina; National Scientific and Technical Research Council (CONICET), Av. Rivadavia 1917, 1033, Ciudad Autónoma de Buenos Aires, Argentina
| | - Lisa Thomasz
- Dept. of Radiobiology (CAC), National Atomic Energy Commission (CNEA), Av. Libertador 8250, 1429, San Martín, Buenos Aires, Argentina; National Scientific and Technical Research Council (CONICET), Av. Rivadavia 1917, 1033, Ciudad Autónoma de Buenos Aires, Argentina
| | - Luciano Rossich
- Dept. of Radiobiology (CAC), National Atomic Energy Commission (CNEA), Av. Libertador 8250, 1429, San Martín, Buenos Aires, Argentina
| | - Carla Rodriguez
- Dept. of Radiobiology (CAC), National Atomic Energy Commission (CNEA), Av. Libertador 8250, 1429, San Martín, Buenos Aires, Argentina
| | - Mario A Pisarev
- Dept. of Radiobiology (CAC), National Atomic Energy Commission (CNEA), Av. Libertador 8250, 1429, San Martín, Buenos Aires, Argentina
| | - Cinthia Rosemblit
- Dept. of Radiobiology (CAC), National Atomic Energy Commission (CNEA), Av. Libertador 8250, 1429, San Martín, Buenos Aires, Argentina; Neuroimmunomodulation and Molecular Oncology Division, Institute for Biomedical Research (BIOMED), School of Medical Sciences, Pontifical Catholic University of Argentina (UCA), Buenos Aires, Argentina
| | - Graciela A Cremaschi
- Dept. of Radiobiology (CAC), National Atomic Energy Commission (CNEA), Av. Libertador 8250, 1429, San Martín, Buenos Aires, Argentina; Neuroimmunomodulation and Molecular Oncology Division, Institute for Biomedical Research (BIOMED), School of Medical Sciences, Pontifical Catholic University of Argentina (UCA), Buenos Aires, Argentina
| | - María Alejandra Dagrosa
- Dept. of Radiobiology (CAC), National Atomic Energy Commission (CNEA), Av. Libertador 8250, 1429, San Martín, Buenos Aires, Argentina; National Scientific and Technical Research Council (CONICET), Av. Rivadavia 1917, 1033, Ciudad Autónoma de Buenos Aires, Argentina
| | - Guillermo J Juvenal
- Dept. of Radiobiology (CAC), National Atomic Energy Commission (CNEA), Av. Libertador 8250, 1429, San Martín, Buenos Aires, Argentina; National Scientific and Technical Research Council (CONICET), Av. Rivadavia 1917, 1033, Ciudad Autónoma de Buenos Aires, Argentina.
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21
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Kerns SL, Chuang KH, Hall W, Werner Z, Chen Y, Ostrer H, West C, Rosenstein B. Radiation biology and oncology in the genomic era. Br J Radiol 2018; 91:20170949. [PMID: 29888979 PMCID: PMC6475928 DOI: 10.1259/bjr.20170949] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 06/01/2018] [Accepted: 06/05/2018] [Indexed: 12/25/2022] Open
Abstract
Radiobiology research is building the foundation for applying genomics in precision radiation oncology. Advances in high-throughput approaches will underpin increased understanding of radiosensitivity and the development of future predictive assays for clinical application. There is an established contribution of genetics as a risk factor for radiotherapy side effects. An individual's radiosensitivity is an inherited polygenic trait with an architecture that includes rare mutations in a few genes that confer large effects and common variants in many genes with small effects. Current thinking is that some will be tissue specific, and future tests will be tailored to the normal tissues at risk. The relationship between normal and tumor cell radiosensitivity is poorly understood. Data are emerging suggesting interplay between germline genetic variation and epigenetic modification with growing evidence that changes in DNA methylation regulate the radiosensitivity of cancer cells and histone acetyltransferase inhibitors have radiosensitizing effects. Changes in histone methylation can also impair DNA damage response signaling and alter radiosensitivity. An important effort to advance radiobiology in the genomic era was establishment of the Radiogenomics Consortium to enable the creation of the large radiotherapy cohorts required to exploit advances in genomics. To address challenges in harmonizing data from multiple cohorts, the consortium established the REQUITE project to collect standardized data and genotyping for ~5,000 patients. The collection of detailed dosimetric data is important to produce validated multivariable models. Continued efforts will identify new genes that impact on radiosensitivity to generate new knowledge on toxicity pathogenesis and tests to incorporate into the clinical decision-making process.
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Affiliation(s)
| | - Kuang-Hsiang Chuang
- Department of Radiation Oncology, University of Rochester Medical Center, Rochester, NY, USA
| | - William Hall
- Department of Radiation Oncology, Medical College of Wisconsin and Clement J Zablocki VA Medical Center Milwaukee, Milwaukee, WI, USA
| | | | - Yuhchyau Chen
- Department of Radiation Oncology, University of Rochester Medical Center, Rochester, NY, USA
| | - Harry Ostrer
- Departments of Pathology and Pediatrics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Catharine West
- Division of Cancer Sciences, University of Manchester, Christie Hospital, Manchester, UK
| | - Barry Rosenstein
- Departments of Radiation Oncology, Genetics and Genomic Sciences, and Dermatology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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22
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Hou M, Huang Z, Chen S, Wang H, Feng T, Yan S, Su Y, Zuo G. Synergistic antitumor effect of suberoylanilide hydroxamic acid and cisplatin in osteosarcoma cells. Oncol Lett 2018; 16:4663-4670. [PMID: 30197679 DOI: 10.3892/ol.2018.9224] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Accepted: 10/20/2017] [Indexed: 11/06/2022] Open
Abstract
Cisplatin, as a first-line chemotherapy drug, has been widely applied for therapy of osteosarcoma. However, its application is limited by drug resistance and serious side effects, including nephrotoxicity and ototoxicity. Suberoylanilide hydroxamic acid (SAHA) is a newly developed histone deacetylase (HDAC) inhibitor, which is the first Food and Drug Administration-approved HDAC inhibitor for the treatment of cutaneous manifestations of T-cell lymphoma. However, SAHA as a monotherapy was revealed to be limited, particularly in solid tumors. In the present study, 143B osteosarcoma cells were treated with multiple concentrations of SAHA or cisplatin, either alone or combined. The morphological characteristics of the treated cells were observed using an inverted microscope. The cytotoxicity effects of the combination of SAHA and cisplatin on 143B cells were analyzed by MTT assay, colony formation assay, wound healing cell migration assay, cell apoptosis assay and cell cycle analysis. Western blot analysis was performed to detect the protein expression levels of B cell lymphoma-2 (Bcl-2)-associated X protein (Bax), Bcl-2, cleaved-caspase-3, cleaved-caspase-8 and cleaved-poly (ADP-ribose) polymerase (PARP). The experimental data indicated that the inhibition of cell proliferation in the combination group was significantly increased compared with that in single drug groups. Expression levels of pro-apoptotic protein were upregulated, whereas anti-apoptotic Bcl-2 was downregulated significantly in 143B cells following SAHA/cisplatin treatment. Taken together, the results revealed that the combination of SAHA and cisplatin inhibited the proliferation of 143B cells and induced their apoptosis synergistically, and this effectiveness may be mediated by caspase activation.
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Affiliation(s)
- Mengyi Hou
- Key Laboratory of Diagnostic Medicine Designated by The Chinese Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Zhenglan Huang
- Key Laboratory of Diagnostic Medicine Designated by The Chinese Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Sicheng Chen
- Department of Clinical Medicine, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Hao Wang
- Key Laboratory of Diagnostic Medicine Designated by The Chinese Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Tianyu Feng
- Key Laboratory of Diagnostic Medicine Designated by The Chinese Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Shujuan Yan
- Key Laboratory of Diagnostic Medicine Designated by The Chinese Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Yuxi Su
- Key Laboratory of Child Development and Disorders of Ministry of Education, Department II of Orthopedics, The Children's Hospital of Chongqing Medical University, Chongqing 400014, P.R. China
| | - Guowei Zuo
- Key Laboratory of Diagnostic Medicine Designated by The Chinese Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
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Yin L, Liu Y, Peng Y, Peng Y, Yu X, Gao Y, Yuan B, Zhu Q, Cao T, He L, Gong Z, Sun L, Fan X, Li X. PARP inhibitor veliparib and HDAC inhibitor SAHA synergistically co-target the UHRF1/BRCA1 DNA damage repair complex in prostate cancer cells. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:153. [PMID: 30012171 PMCID: PMC6048811 DOI: 10.1186/s13046-018-0810-7] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 06/25/2018] [Indexed: 12/22/2022]
Abstract
Background The poly ADP ribose polymerase (PARP) inhibitor olaparib has been approved for treating prostate cancer (PCa) with BRCA mutations, and veliparib, another PARP inhibitor, is being tested in clinical trials. However, veliparib only showed a moderate anticancer effect, and combination therapy is required for PCa patients. Histone deacetylase (HDAC) inhibitors have been tested to improve the anticancer efficacy of PARP inhibitors for PCa cells, but the exact mechanisms are still elusive. Methods Several types of PCa cells and prostate epithelial cell line RWPE-1 were treated with veliparib or SAHA alone or in combination. Cell viability or clonogenicity was tested with violet crystal assay; cell apoptosis was detected with Annexin V-FITC/PI staining and flow cytometry, and the cleaved PARP was tested with western blot; DNA damage was evaluated by staining the cells with γH2AX antibody, and the DNA damage foci were observed with a fluorescent microscopy, and the level of γH2AX was tested with western blot; the protein levels of UHRF1 and BRCA1 were measured with western blot or cell immunofluorescent staining, and the interaction of UHRF1 and BRCA1 proteins was detected with co-immunoprecipitation when cells were treated with drugs. The antitumor effect of combinational therapy was validated in DU145 xenograft models. Results PCa cells showed different sensitivity to veliparib or SAHA. Co-administration of both drugs synergistically decreased cell viability and clonogenicity, and synergistically induced cell apoptosis and DNA damage, while had no detectable toxicity to normal prostate epithelial cells. Mechanistically, veliparib or SAHA alone reduced BRCA1 or UHRF1 protein levels, co-treatment with veliparib and SAHA synergistically reduced BRCA1 protein levels by targeting the UHRF1/BRCA1 protein complex, the depletion of UHRF1 resulted in the degradation of BRCA1 protein, while the elevation of UHRF1 impaired co-treatment-reduced BRCA1 protein levels. Co-administration of both drugs synergistically decreased the growth of xenografts. Conclusions Our studies revealed that the synergistic lethality of HDAC and PARP inhibitors resulted from promoting DNA damage and inhibiting HR DNA damage repair pathways, in particular targeting the UHRF1/BRCA1 protein complex. The synergistic lethality of veliparib and SAHA shows great potential for future PCa clinical trials. Electronic supplementary material The online version of this article (10.1186/s13046-018-0810-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Linglong Yin
- Center for Molecular Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Molecular Radiation Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Youhong Liu
- Center for Molecular Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Molecular Radiation Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Yuchong Peng
- Center for Molecular Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Molecular Radiation Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Yongbo Peng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China
| | - Xiaohui Yu
- Center for Molecular Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Molecular Radiation Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Yingxue Gao
- Center for Molecular Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Molecular Radiation Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Bowen Yuan
- Center for Molecular Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Molecular Radiation Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Qianling Zhu
- Center for Molecular Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Molecular Radiation Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Tuoyu Cao
- Center for Molecular Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Molecular Radiation Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Leye He
- Research Institute for Prostate Disease, Central South University, Changsha, China
| | - Zhicheng Gong
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, China
| | - Lunquan Sun
- Center for Molecular Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Molecular Radiation Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Xuegong Fan
- Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Xiong Li
- Center for Molecular Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China. .,Hunan Key Laboratory of Molecular Radiation Oncology, Xiangya Hospital, Central South University, Changsha, China. .,Research Institute for Prostate Disease, Central South University, Changsha, China.
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Histone Deacetylase Inhibitor Induced Radiation Sensitization Effects on Human Cancer Cells after Photon and Hadron Radiation Exposure. Int J Mol Sci 2018; 19:ijms19020496. [PMID: 29414878 PMCID: PMC5855718 DOI: 10.3390/ijms19020496] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 01/29/2018] [Accepted: 02/02/2018] [Indexed: 12/25/2022] Open
Abstract
Suberoylanilide hydroxamic acid (SAHA) is a histone deacetylase inhibitor, which has been widely utilized throughout the cancer research field. SAHA-induced radiosensitization in normal human fibroblasts AG1522 and lung carcinoma cells A549 were evaluated with a combination of γ-rays, proton, and carbon ion exposure. Growth delay was observed in both cell lines during SAHA treatment; 2 μM SAHA treatment decreased clonogenicity and induced cell cycle block in G1 phase but 0.2 μM SAHA treatment did not show either of them. Low LET (Linear Energy Transfer) irradiated A549 cells showed radiosensitization effects on cell killing in cycling and G1 phase with 0.2 or 2 μM SAHA pretreatment. In contrast, minimal sensitization was observed in normal human cells after low and high LET radiation exposure. The potentially lethal damage repair was not affected by SAHA treatment. SAHA treatment reduced the rate of γ-H2AX foci disappearance and suppressed RAD51 and RPA (Replication Protein A) focus formation. Suppression of DNA double strand break repair by SAHA did not result in the differences of SAHA-induced radiosensitization between human cancer cells and normal cells. In conclusion, our results suggest SAHA treatment will sensitize cancer cells to low and high LET radiation with minimum effects to normal cells.
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25
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Valproic Acid Sensitizes Hepatocellular Carcinoma Cells to Proton Therapy by Suppressing NRF2 Activation. Sci Rep 2017; 7:14986. [PMID: 29118323 PMCID: PMC5678087 DOI: 10.1038/s41598-017-15165-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 10/23/2017] [Indexed: 01/08/2023] Open
Abstract
Although efficacy of combined histone deacetylase (HDAC) inhibitors and conventional photon radiotherapy is being tested in clinical trials, their combined effect with proton beam radiotherapy has yet to be determined. Here, we compared combined effect of valproic acid (VPA), a class I and II HDAC inhibitor and antiepileptic drug with proton and photon irradiation in hepatocellular carcinoma (HCC) cells in vitro and in vivo. We found that VPA sensitized more Hep3B cells to proton than to photon irradiation. VPA prolonged proton-induced DNA damage and augmented proton-induced apoptosis. In addition, VPA further increased proton-induced production of intracellular reactive oxygen species and suppressed expression of nuclear factor erythroid-2-related factor 2 (NRF2), a key transcription factor regulating antioxidant response. Downregulation of NRF2 by siRNA transfection increased proton-induced apoptotic cell death, supporting NRF2 as a target of VPA in radiosensitization. In Hep3B tumor xenograft models, VPA significantly enhanced proton-induced tumor growth delay with increased apoptosis and decreased NRF2 expression in vivo. Collectively, our study highlights a proton radiosensitizing effect of VPA in HCC cells. As NRF2 is an emerging prognostic marker contributing to radioresistance in HCC, targeting NRF2 pathway may impact clinical outcome of proton beam radiotherapy.
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Christmann M, Kaina B. Epigenetic regulation of DNA repair genes and implications for tumor therapy. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2017; 780:15-28. [PMID: 31395346 DOI: 10.1016/j.mrrev.2017.10.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 10/05/2017] [Accepted: 10/06/2017] [Indexed: 12/31/2022]
Abstract
DNA repair represents the first barrier against genotoxic stress causing metabolic changes, inflammation and cancer. Besides its role in preventing cancer, DNA repair needs also to be considered during cancer treatment with radiation and DNA damaging drugs as it impacts therapy outcome. The DNA repair capacity is mainly governed by the expression level of repair genes. Alterations in the expression of repair genes can occur due to mutations in their coding or promoter region, changes in the expression of transcription factors activating or repressing these genes, and/or epigenetic factors changing histone modifications and CpG promoter methylation or demethylation levels. In this review we provide an overview on the epigenetic regulation of DNA repair genes. We summarize the mechanisms underlying CpG methylation and demethylation, with de novo methyltransferases and DNA repair involved in gain and loss of CpG methylation, respectively. We discuss the role of components of the DNA damage response, p53, PARP-1 and GADD45a on the regulation of the DNA (cytosine-5)-methyltransferase DNMT1, the key enzyme responsible for gene silencing. We stress the relevance of epigenetic silencing of DNA repair genes for tumor formation and tumor therapy. A paradigmatic example is provided by the DNA repair protein O6-methylguanine-DNA methyltransferase (MGMT), which is silenced in up to 40% of various cancers through CpG promoter methylation. The CpG methylation status of the MGMT promoter strongly correlates with clinical outcome and, therefore, is used as prognostic marker during glioblastoma therapy. Mismatch repair genes are also subject of epigenetic silencing, which was shown to correlate with colorectal cancer formation. For many other repair genes shown to be epigenetically regulated the clinical outcome is not yet clear. We also address the question of whether genotoxic stress itself can lead to epigenetic alterations of genes encoding proteins involved in the defense against genotoxic stress.
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Affiliation(s)
- Markus Christmann
- Department of Toxicology, University of Mainz, Obere Zahlbacher Str. 67, D-55131 Mainz, Germany.
| | - Bernd Kaina
- Department of Toxicology, University of Mainz, Obere Zahlbacher Str. 67, D-55131 Mainz, Germany.
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Abstract
Glioblastoma multiforme (GBM) is the most lethal primary brain tumor in adults despite contemporary gold-standard first-line treatment strategies. This type of tumor recurs in virtually all patients and no commonly accepted standard treatment exists for the recurrent disease. Therefore, advances in all scientific and clinical aspects of GBM are urgently needed. Epigenetic mechanisms are one of the major factors contributing to the pathogenesis of cancers, including glioblastoma. Epigenetic modulators that regulate gene expression by altering the epigenome and non-histone proteins are being exploited as therapeutic drug targets. Over the last decade, numerous preclinical and clinical studies on histone deacetylase (HDAC) inhibitors have shown promising results in various cancers. This article provides an overview of the anticancer mechanisms of HDAC inhibitors and the role of HDAC isoforms in GBM. We also summarize current knowledge on HDAC inhibitors on the basis of preclinical studies and emerging clinical data.
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Chen YJ, Wang WH, Wu WY, Hsu CC, Wei LR, Wang SF, Hsu YW, Liaw CC, Tsai WC. Novel histone deacetylase inhibitor AR-42 exhibits antitumor activity in pancreatic cancer cells by affecting multiple biochemical pathways. PLoS One 2017; 12:e0183368. [PMID: 28829799 PMCID: PMC5567660 DOI: 10.1371/journal.pone.0183368] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Accepted: 08/02/2017] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE Pancreatic cancer is one of the most lethal types of cancer with a 5-year survival rate of ~5%. Histone deacetylases (HDACs) participate in many cellular processes, including carcinogenesis, and pharmacological inhibition of HDACs has emerged as a potential therapeutic strategy. In this study, we explored antitumor activity of the novel HDAC inhibitor AR-42 in pancreatic cancer. METHODS Human pancreatic cancer cell lines BxPC-3 and PANC-1 were used in this study. Real-time PCR, RT-PCR, and western blotting were employed to investigate expression of specific genes and proteins, respectively. Translocation of apoptosis-inducing factor was investigated by immunofluorescence and subcellular fractionation. The number of apoptotic cells, cell cycle stages, and reactive oxygen species (ROS) generation levels were determined by flow cytometry. Cell invasiveness was examined by the Matrigel invasion assay. Efficacy of AR-42 in vivo was evaluated by utilizing BxPC-3 xenograft mouse model. RESULTS AR-42 inhibited pancreatic cancer cell proliferation by causing G2/M cell cycle arrest via regulating expression levels of genes and proteins involved in cell cycle. AR-42 also induced ROS generation and DNA damage, triggering apoptosis of pancreatic cancer cells via both caspase-3-dependent and caspase-3-independent pathways. In addition, AR-42 increased expression levels of negative regulators of p53 (miR-125b, miR-30d, and miR33), which could contribute to lower expression level of mutant p53 in pancreatic cancer cells. Cell invasion assay showed that AR-42 reduced cancer cell aggressiveness and significantly diminished BxPC-3 xenograft tumor growth in vivo. CONCLUSION AR-42, a novel HDAC inhibitor, inhibited pancreatic cancer cells by regulating p53 expression, inducing cell cycle arrest, particularly at the G2/M stage, and activating multiple apoptosis pathways. Additionally, AR-42 inhibited cell invasiveness and potently suppressed pancreatic cancer tumors in vivo. We conclude that by virtue of its multiple mechanisms of action, AR-42 possesses a considerable potential as an antitumor agent in pancreatic cancer.
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Affiliation(s)
- Yi-Jin Chen
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wen-Hung Wang
- Department of Otolaryngology, Cathay General Hospital, Taipei City, Taiwan
- Department of Otolaryngology, Sijhih Cathay General Hospital, New Taipei City, Taiwan
- School of Medicine, Fu-Jen Catholic University, New Taipei City, Taiwan
| | - Wan-Yu Wu
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chia-Chi Hsu
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ling-Rung Wei
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Sheng-Fan Wang
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
- Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ya-Wen Hsu
- Department of Hospital and Health Care Administration, Chia Nan University of Pharmacy & Science, Tainan, Taiwan
| | - Chih-Chuang Liaw
- Doctoral Degree Program of Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung, Taiwan
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Wan-Chi Tsai
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
- Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
- * E-mail:
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29
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Tang F, Choy E, Tu C, Hornicek F, Duan Z. Therapeutic applications of histone deacetylase inhibitors in sarcoma. Cancer Treat Rev 2017; 59:33-45. [PMID: 28732326 DOI: 10.1016/j.ctrv.2017.06.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 06/21/2017] [Accepted: 06/23/2017] [Indexed: 02/05/2023]
Abstract
Sarcomas are a rare group of malignant tumors originating from mesenchymal stem cells. Surgery, radiation and chemotherapy are currently the only standard treatments for sarcoma. However, their response rates to chemotherapy are quite low. Toxic side effects and multi-drug chemoresistance make treatment even more challenging. Therefore, better drugs to treat sarcomas are needed. Histone deacetylase inhibitors (HDAC inhibitors, HDACi, HDIs) are epigenetic modifying agents that can inhibit sarcoma growth in vitro and in vivo through a variety of pathways, including inducing tumor cell apoptosis, causing cell cycle arrest, impairing tumor invasion and preventing metastasis. Importantly, preclinical studies have revealed that HDIs can not only sensitize sarcomas to chemotherapy and radiotherapy, but also increase treatment responses when combined with other chemotherapeutic drugs. Several phase I and II clinical trials have been conducted to assess the efficacy of HDIs either as monotherapy or in combination with standard chemotherapeutic agents or targeted therapeutic drugs for sarcomas. Combination regimen for sarcomas appear to be more promising than monotherapy when using HDIs. This review summarizes our current understanding and therapeutic applications of HDIs in sarcomas.
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Affiliation(s)
- Fan Tang
- Sarcoma Biology Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Jackson 1115, Boston, MA 02114, USA; Department of Orthopedics, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu, Sichuan 610041, China
| | - Edwin Choy
- Sarcoma Biology Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Jackson 1115, Boston, MA 02114, USA
| | - Chongqi Tu
- Department of Orthopedics, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu, Sichuan 610041, China
| | - Francis Hornicek
- Sarcoma Biology Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Jackson 1115, Boston, MA 02114, USA
| | - Zhenfeng Duan
- Sarcoma Biology Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Jackson 1115, Boston, MA 02114, USA.
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Liu G, Wang H, Zhang F, Tian Y, Tian Z, Cai Z, Lim D, Feng Z. The Effect of VPA on Increasing Radiosensitivity in Osteosarcoma Cells and Primary-Culture Cells from Chemical Carcinogen-Induced Breast Cancer in Rats. Int J Mol Sci 2017; 18:ijms18051027. [PMID: 28489060 PMCID: PMC5454939 DOI: 10.3390/ijms18051027] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 04/30/2017] [Accepted: 05/05/2017] [Indexed: 12/22/2022] Open
Abstract
This study explored whether valproic acid (VPA, a histone deacetylase inhibitor) could radiosensitize osteosarcoma and primary-culture tumor cells, and determined the mechanism of VPA-induced radiosensitization. The working system included osteosarcoma cells (U2OS) and primary-culture cells from chemical carcinogen (DMBA)-induced breast cancer in rats; and clonogenic survival, immunofluorescence, fluorescent in situ hybridization (FISH) for chromosome aberrations, and comet assays were used in this study. It was found that VPA at the safe or critical safe concentration of 0.5 or 1.0 mM VPA could result in the accumulation of more ionizing radiation (IR)-induced DNA double strand breaks, and increase the cell radiosensitivity. VPA-induced radiosensitivity was associated with the inhibition of DNA repair activity in the working systems. In addition, the chromosome aberrations including chromosome breaks, chromatid breaks, and radial structures significantly increased after the combination treatment of VPA and IR. Importantly, the results obtained by primary-culture cells from the tissue of chemical carcinogen-induced breast cancer in rats further confirmed our findings. The data in this study demonstrated that VPA at a safe dose was a radiosensitizer for osteosarcoma and primary-culture tumor cells through suppressing DNA-double strand breaks repair function.
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Affiliation(s)
- Guochao Liu
- Department of Occupational Health and Occupational Medicine, School of Public Health, Shandong University, Jinan 250012, China.
| | - Hui Wang
- Department of Occupational Health and Occupational Medicine, School of Public Health, Shandong University, Jinan 250012, China.
| | - Fengmei Zhang
- Department of Occupational Health and Occupational Medicine, School of Public Health, Shandong University, Jinan 250012, China.
| | - Youjia Tian
- Department of Occupational Health and Occupational Medicine, School of Public Health, Shandong University, Jinan 250012, China.
| | - Zhujun Tian
- Department of Occupational Health and Occupational Medicine, School of Public Health, Shandong University, Jinan 250012, China.
| | - Zuchao Cai
- Department of Occupational Health and Occupational Medicine, School of Public Health, Shandong University, Jinan 250012, China.
| | - David Lim
- Flinders Rural Health South Australia, Victor Harbor, SA 5211, Australia.
| | - Zhihui Feng
- Department of Occupational Health and Occupational Medicine, School of Public Health, Shandong University, Jinan 250012, China.
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Zhang H, Zhang W, Zhou Y, Jiang Y, Li S. Dual Functional Mesoporous Silicon Nanoparticles Enhance the Radiosensitivity of VPA in Glioblastoma. Transl Oncol 2017; 10:229-240. [PMID: 28193559 PMCID: PMC5304234 DOI: 10.1016/j.tranon.2016.12.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 12/12/2016] [Accepted: 12/19/2016] [Indexed: 01/17/2023] Open
Abstract
Radiotherapy is a critical strategy and standard adjuvant approach to glioblastoma treatment. One of the major challenges facing radiotherapy is to minimize radiation damage to normal tissue without compromising therapeutic effects on cancer cells. Various agents and numerous approaches have been developed to improve the therapeutic index of radiotherapy. Among them, radiosensitizers have attracted much attention because they selectively increase susceptibility of cancer cells to radiation and thus enhance biological effectiveness of radiotherapy. However, clinical translation of radiosensitizers has been severely limited by their potential toxicity to normal tissue. Recent advances in nanomedicine offer an opportunity to overcome this hindrance. In this study, a dual functional mesoporous silica nanoparticle (MSN) formulation of the valproic acid (VPA) radiosensitizer was developed, which specifically recognized folic acid-overexpressing cancer cells and released VPA conditionally in acidic turmeric microenvironment. The efficacy of this targeted and pH-responsive VPA nanocarrier was evaluated as compared to VPA treatment approach in two cell lines: rat glioma cells C6 and human glioma U87. Compared to VPA treatment, targeted VPA-MSNs not only potentiated the toxic effects of radiation and led to a higher rate of cell death but also enhanced inhibition on clonogenic assay. More interestingly, these effects were further accentuated by VPA-MSNs at low pH values. Western blot analysis showed that the effects were mediated via enhanced apoptosis-inducing effects. Our results suggest that the adjunctive use of VPA-MSNs may enhance the effectiveness of radiotherapy in glioma treatment by lowering the radiation doses required to kill cancer cells and thereby minimize collateral damage to healthy adjacent tissue.
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Affiliation(s)
- Hailong Zhang
- Drug Innovation, The Second Hospital of Shandong University, Jinan, PR China
| | - Wei Zhang
- Cancer Centre, The Second Hospital of Shandong University, 247 Beiyuan Street, Jinan, PR China
| | - Yong Zhou
- Cancer Centre, The Second Hospital of Shandong University, 247 Beiyuan Street, Jinan, PR China
| | - Yuhua Jiang
- Drug Innovation, The Second Hospital of Shandong University, Jinan, PR China
- Cancer Centre, The Second Hospital of Shandong University, 247 Beiyuan Street, Jinan, PR China
| | - Shupeng Li
- Drug Innovation, The Second Hospital of Shandong University, Jinan, PR China
- Cancer Centre, The Second Hospital of Shandong University, 247 Beiyuan Street, Jinan, PR China
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El Demellawy D, McGowan-Jordan J, de Nanassy J, Chernetsova E, Nasr A. Update on molecular findings in rhabdomyosarcoma. Pathology 2017; 49:238-246. [PMID: 28256213 DOI: 10.1016/j.pathol.2016.12.345] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 12/12/2016] [Accepted: 12/20/2016] [Indexed: 12/13/2022]
Abstract
Rhabdomyosarcoma (RMS) is the most common malignant soft tissue tumour in children and adolescents. Histologically RMS resembles developing fetal striated skeletal muscle. RMS is stratified into different histological subtypes which appear to influence management plans and patient outcome. Importantly, molecular classification of RMS seems to more accurately capture the true biology and clinical course and prognosis of RMS to guide therapeutic decisions. The identification of PAX-FOXO1 fusion status in RMS is one of the most important updates in the risk stratification of RMS. There are several genes close to PAX that are frequently altered including the RAS family, FGFR4, PIK3CA, CTNNB1, FBXW7, and BCOR. As with most paediatric blue round cell tumours and sarcomas, chemotherapy is the key regimen for RMS therapy. Currently there are no direct inhibitors against PAX-FOXO1 fusion oncoproteins and targeting epigenetic cofactors is limited to clinical trials. Failure of therapy in RMS is usually related to drug resistance and metastatic disease. Through this review we have highlighted most of the molecular aspects in RMS and have attempted to correlate with RMS classification, treatment and prognosis.
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Affiliation(s)
- Dina El Demellawy
- Faculty of Medicine, University of Ottawa, Ontario, Canada; Pediatric Pathology, Children's Hospital of Eastern Ontario, Ontario, Canada.
| | - Jean McGowan-Jordan
- Faculty of Medicine, University of Ottawa, Ontario, Canada; Genetics, Children's Hospital of Eastern Ontario, Ontario, Canada
| | - Joseph de Nanassy
- Faculty of Medicine, University of Ottawa, Ontario, Canada; Pediatric Pathology, Children's Hospital of Eastern Ontario, Ontario, Canada
| | | | - Ahmed Nasr
- Faculty of Medicine, University of Ottawa, Ontario, Canada; Pediatric Surgery, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
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Abstract
Malignant peripheral nerve sheath tumor (MPNST) is a highly aggressive disease with a dismal prognosis. The disease can occur sporadically or in patients with inherited neurofibromatosis (NF-1). MPNST is typically resistant to therapeutic intervention. Hence, the need for improved therapies is warranted. Several broad spectrum histone deacetylase (HDAC) inhibitors have a high affinity for class I HDAC isoforms. Inhibition of multiple HDAC isoforms often results in undesirable side effects, while inhibiting a single isoform could possibly improve the therapeutic window and limit toxicity. Recently, HDAC8 inhibitors have been developed and in initial preclinical studies, they demonstrate anticancer efficacy. Little is known about the role of HDAC8 in MPNST. We recently revealed an anticancer effect of HDAC8 inhibition in human and murine MPNST models. The goal of our previous study was to determine the potential therapeutic efficacy of HDAC8 inhibition in MPNST. In this chapter, we briefly describe the methods for determining the role of pharmacological HDAC inhibition in MPNST.
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Roos WP, Krumm A. The multifaceted influence of histone deacetylases on DNA damage signalling and DNA repair. Nucleic Acids Res 2016; 44:10017-10030. [PMID: 27738139 PMCID: PMC5137451 DOI: 10.1093/nar/gkw922] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 10/02/2016] [Accepted: 10/05/2016] [Indexed: 12/16/2022] Open
Abstract
Histone/protein deacetylases play multiple roles in regulating gene expression and protein activation and stability. Their deregulation during cancer initiation and progression cause resistance to therapy. Here, we review the role of histone deacetylases (HDACs) and the NAD+ dependent sirtuins (SIRTs) in the DNA damage response (DDR). These lysine deacetylases contribute to DNA repair by base excision repair (BER), nucleotide excision repair (NER), mismatch repair (MMR), non-homologous end joining (NHEJ), homologous recombination (HR) and interstrand crosslink (ICL) repair. Furthermore, we discuss possible mechanisms whereby these histone/protein deacetylases facilitate the switch between DNA double-strand break (DSB) repair pathways, how SIRTs play a central role in the crosstalk between DNA repair and cell death pathways due to their dependence on NAD+, and the influence of small molecule HDAC inhibitors (HDACi) on cancer cell resistance to genotoxin based therapies. Throughout the review, we endeavor to identify the specific HDAC targeted by HDACi leading to therapy sensitization.
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Affiliation(s)
- Wynand Paul Roos
- Institute of Toxicology, Medical Center of the University Mainz, Obere Zahlbacher Str. 67, D-55131 Mainz, Germany
| | - Andrea Krumm
- Institute of Toxicology, Medical Center of the University Mainz, Obere Zahlbacher Str. 67, D-55131 Mainz, Germany
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Suberanilohydroxamic acid (vorinostat) synergistically enhances the cytotoxicity of doxorubicin and cisplatin in osteosarcoma cell lines. Anticancer Drugs 2016; 27:1001-10. [DOI: 10.1097/cad.0000000000000418] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Gong F, Chiu LY, Miller KM. Acetylation Reader Proteins: Linking Acetylation Signaling to Genome Maintenance and Cancer. PLoS Genet 2016; 12:e1006272. [PMID: 27631103 PMCID: PMC5025232 DOI: 10.1371/journal.pgen.1006272] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Chromatin-based DNA damage response (DDR) pathways are fundamental for preventing genome and epigenome instability, which are prevalent in cancer. Histone acetyltransferases (HATs) and histone deacetylases (HDACs) catalyze the addition and removal of acetyl groups on lysine residues, a post-translational modification important for the DDR. Acetylation can alter chromatin structure as well as function by providing binding signals for reader proteins containing acetyl-lysine recognition domains, including the bromodomain (BRD). Acetylation dynamics occur upon DNA damage in part to regulate chromatin and BRD protein interactions that mediate key DDR activities. In cancer, DDR and acetylation pathways are often mutated or abnormally expressed. DNA damaging agents and drugs targeting epigenetic regulators, including HATs, HDACs, and BRD proteins, are used or are being developed to treat cancer. Here, we discuss how histone acetylation pathways, with a focus on acetylation reader proteins, promote genome stability and the DDR. We analyze how acetylation signaling impacts the DDR in the context of cancer and its treatments. Understanding the relationship between epigenetic regulators, the DDR, and chromatin is integral for obtaining a mechanistic understanding of genome and epigenome maintenance pathways, information that can be leveraged for targeting acetylation signaling, and/or the DDR to treat diseases, including cancer.
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Affiliation(s)
- Fade Gong
- Department of Molecular Biosciences, Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, Texas, United States of America
| | - Li-Ya Chiu
- Department of Molecular Biosciences, Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, Texas, United States of America
| | - Kyle M. Miller
- Department of Molecular Biosciences, Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, Texas, United States of America
- * E-mail:
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de Andrade PV, Andrade AF, de Paula Queiroz RG, Scrideli CA, Tone LG, Valera ET. The histone deacetylase inhibitor PCI-24781 as a putative radiosensitizer in pediatric glioblastoma cell lines. Cancer Cell Int 2016; 16:31. [PMID: 27095947 PMCID: PMC4835828 DOI: 10.1186/s12935-016-0306-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 04/07/2016] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Glioblastoma (GBM) is considered to be one of the most aggressive tumors of the central nervous system (CNS). Even with the use of modern treatment protocols, the prognosis remains reserved, with children with GBM having a mean survival of 12-15 months. METHODS In the present study we investigated the potential radiosensitizing effect of PCI-24781, a potent pan-histone deacetylase inhibitor (HDACi), on the SF188 and KNS42 cell lines of pediatric GBM. Cell proliferation rates, clonogenicity and apoptosis were compared in the presence and absence of treatment with PCI-24781. We also compared the clonogenicity rates of the irradiated SF188 and KNS42 cell lines with or without previous treatment with PCI-24781 at the doses of 0.25-16 μM. In addition, we investigated the effects of PCI-24781 on the expression of some of the main proteins responsible for the repair of double-strand DNA breaks caused by irradiation. RESULTS The inhibitor blocked cell proliferation, induced death by apoptosis and reduced the colony forming capacity of the cell lines, both of them showing a significant decrease of colony formation at all irradiation doses. The expression of the Rad51 protein, important for the homologous recombination (HR) repair pathway, and of the DNA-PKcs, Ku70 and Ku86 proteins, important for the non-homologous end joining (NHEJ) repair pathway, was more reduced when the irradiated cell line was previously treated with PCI-24781 than when it was treated exclusively with radiotherapy. CONCLUSIONS These findings demonstrate that HDACi PCI-24781 has a radiosensitizing profile that compromises the repair of double-strand DNA breaks in cells of pediatric GBM treated with radiotherapy.
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Affiliation(s)
- Pamela Viani de Andrade
- Department of Pediatrics, Ribeirão Preto Medical School, Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto-USP, University of São Paulo, 7º andar. Av. Bandeirantes, 3900, Bairro Monte Alegre, Ribeirão Preto, SP CEP 14048-900 Brazil
| | - Augusto Faria Andrade
- Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Bairro Monte Alegre, Ribeirão Preto, SP CEP 14048-900 Brazil
| | - Rosane Gomes de Paula Queiroz
- Department of Pediatrics, Ribeirão Preto Medical School, Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto-USP, University of São Paulo, 7º andar. Av. Bandeirantes, 3900, Bairro Monte Alegre, Ribeirão Preto, SP CEP 14048-900 Brazil
| | - Carlos Alberto Scrideli
- Department of Pediatrics, Ribeirão Preto Medical School, Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto-USP, University of São Paulo, 7º andar. Av. Bandeirantes, 3900, Bairro Monte Alegre, Ribeirão Preto, SP CEP 14048-900 Brazil
| | - Luiz Gonzaga Tone
- Department of Pediatrics, Ribeirão Preto Medical School, Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto-USP, University of São Paulo, 7º andar. Av. Bandeirantes, 3900, Bairro Monte Alegre, Ribeirão Preto, SP CEP 14048-900 Brazil ; Department of Genetics, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes, 3900, Bairro Monte Alegre, Ribeirão Preto, SP CEP 14048-900 Brazil
| | - Elvis Terci Valera
- Department of Pediatrics, Ribeirão Preto Medical School, Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto-USP, University of São Paulo, 7º andar. Av. Bandeirantes, 3900, Bairro Monte Alegre, Ribeirão Preto, SP CEP 14048-900 Brazil
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Luo Y, Wang H, Zhao X, Dong C, Zhang F, Guo G, Guo G, Wang X, Powell SN, Feng Z. Valproic acid causes radiosensitivity of breast cancer cells via disrupting the DNA repair pathway. Toxicol Res (Camb) 2016; 5:859-870. [PMID: 30090395 DOI: 10.1039/c5tx00476d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 02/16/2016] [Indexed: 11/21/2022] Open
Abstract
Valproic acid (VPA) is one of the representative compounds of histone deacetylase inhibitors (HDACis) and is used widely for the clinical treatment of epilepsy and other convulsive diseases. Current reports indicate that HDACis may also be an attractive radiosensitizer for some tumor cells; however, it is unknown whether the safe blood concentration of VPA (0.3-0.8 mM) used for the treatment of epilepsy can also induce radiosensitivity in breast cancer cells. In addition, the mechanism by which VPA may induce radiosensitivity in breast cancer cells is yet to be determined. Our results clearly indicated that VPA at a safe dose (0.5 mM) could significantly increase the radiosensitivity of MCF7 breast cancer cells and result in more accumulation of DNA double strand breaks in response to DNA damage. After VPA treatment, the frequencies of homologous recombination (HR) and non-homologous end joining (NHEJ) tested by recombination substrates, pDR-GFP and EJ5-GFP, were dramatically decreased in the cells without the change of the cell cycle profile. It was further found that VPA could inhibit the recruitment of key repair proteins to DNA break areas, such as Rad51, BRCA1, and Ku80. Thus, our results demonstrated that a safe dose of VPA causes radiosensitivity in breast cancer cells through disrupting the molecular mechanisms of both BRCA1-Rad51-mediated HR and Ku80-mediated NHEJ pathways.
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Affiliation(s)
- Yue Luo
- Department of Occupational Health and Occupational Medicine , The Public Health School , Shandong University , Shandong , Jinan , China .
| | - Hui Wang
- Department of Occupational Health and Occupational Medicine , The Public Health School , Shandong University , Shandong , Jinan , China .
| | - Xipeng Zhao
- Department of Occupational Health and Occupational Medicine , The Public Health School , Shandong University , Shandong , Jinan , China .
| | - Chao Dong
- Department of Occupational Health and Occupational Medicine , The Public Health School , Shandong University , Shandong , Jinan , China .
| | - Fengmei Zhang
- Department of Occupational Health and Occupational Medicine , The Public Health School , Shandong University , Shandong , Jinan , China .
| | - Gang Guo
- Image Center , Jinan Third People's Hospital , Shandong Province , Shandong , Jinan , China
| | - Gongshe Guo
- The Second Hospital of Shandong University , Shandong , Jinan , China
| | - Xiaowei Wang
- Department of Radiation Oncology , Washington University School of Medicine , St. Louis , USA
| | - Simon N Powell
- Department of Radiation Oncology and Molecular Biology Program , Memorial Sloan Kettering Cancer Center , New York , USA
| | - Zhihui Feng
- Department of Occupational Health and Occupational Medicine , The Public Health School , Shandong University , Shandong , Jinan , China .
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Redjal N, Reinshagen C, Le A, Walcott BP, McDonnell E, Dietrich J, Nahed BV. Valproic acid, compared to other antiepileptic drugs, is associated with improved overall and progression-free survival in glioblastoma but worse outcome in grade II/III gliomas treated with temozolomide. J Neurooncol 2016; 127:505-14. [PMID: 26830093 DOI: 10.1007/s11060-016-2054-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 01/03/2016] [Indexed: 10/22/2022]
Abstract
Valproic acid (VPA) is an anti-epileptic drug with properties of a histone deacetylase inhibitor (HDACi). HDACi play a key role in epigenetic regulation of gene expression and have been increasingly used as anticancer agents. Recent studies suggest that VPA is associated with improved survival in high-grade gliomas. However, effects on lower grade gliomas have not been examined. This study investigates whether use of VPA correlates with tumor grade, histological progression, progression-free and overall survival (OS) in grade II, III, and IV glioma patients. Data from 359 glioma patients (WHO II-IV) treated with temozolomide plus an antiepileptic drug (VPA or another antiepileptic drug) between January 1997 and June 2013 at the Massachusetts General Hospital was analyzed retrospectively. After confounder adjustment, VPA was associated with a 28 % decrease in hazard of death (p = 0.031) and a 28 % decrease in the hazard of progression or death (p = 0.015) in glioblastoma. Additionally, VPA dose correlated with reduced hazard of death by 7 % (p = 0.002) and reduced hazard of progression or death by 5 % (p < 0.001) with each 100 g increase in total dose. Conversely, in grade II and III gliomas VPA was associated with a 118 % increased risk of tumor progression or death (p = 0.014), and every additional 100 g of VPA raised the hazard of progression or death by 4 %, although not statistically significant (p = 0.064). Moreover, grade II and III glioma patients taking VPA had 2.17 times the risk of histological progression (p = 0.020), although this effect was no longer significant after confounder adjustment. In conclusion, VPA was associated with improved survival in glioblastoma in a dose-dependent manner. However, in grade II and III gliomas, VPA was linked to histological progression and decrease in progression-free survival. Prospective evaluation of VPA treatment for glioma patients is warranted to confirm these findings.
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Affiliation(s)
- Navid Redjal
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, White Building Room, Gray 502, Boston, MA, 02114, USA.
| | - Clemens Reinshagen
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, 02114, Boston, MA, USA
| | - Andrew Le
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, White Building Room, Gray 502, Boston, MA, 02114, USA
| | - Brian P Walcott
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, White Building Room, Gray 502, Boston, MA, 02114, USA
| | - Erin McDonnell
- MGH Biostatistics Center, Massachusetts General Hospital, Harvard Medical School, 50 Staniford Street, Boston, MA, 02114, USA
| | - Jorg Dietrich
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, 02114, MA, USA
| | - Brian V Nahed
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, White Building Room, Gray 502, Boston, MA, 02114, USA
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Cellular Pathways in Response to Ionizing Radiation and Their Targetability for Tumor Radiosensitization. Int J Mol Sci 2016; 17:ijms17010102. [PMID: 26784176 PMCID: PMC4730344 DOI: 10.3390/ijms17010102] [Citation(s) in RCA: 273] [Impact Index Per Article: 34.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 12/22/2015] [Accepted: 12/25/2015] [Indexed: 12/20/2022] Open
Abstract
During the last few decades, improvements in the planning and application of radiotherapy in combination with surgery and chemotherapy resulted in increased survival rates of tumor patients. However, the success of radiotherapy is impaired by two reasons: firstly, the radioresistance of tumor cells and, secondly, the radiation-induced damage of normal tissue cells located in the field of ionizing radiation. These limitations demand the development of drugs for either radiosensitization of tumor cells or radioprotection of normal tissue cells. In order to identify potential targets, a detailed understanding of the cellular pathways involved in radiation response is an absolute requirement. This review describes the most important pathways of radioresponse and several key target proteins for radiosensitization.
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Vleeshouwer-Neumann T, Phelps M, Bammler TK, MacDonald JW, Jenkins I, Chen EY. Histone Deacetylase Inhibitors Antagonize Distinct Pathways to Suppress Tumorigenesis of Embryonal Rhabdomyosarcoma. PLoS One 2015; 10:e0144320. [PMID: 26636678 PMCID: PMC4670218 DOI: 10.1371/journal.pone.0144320] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 11/15/2015] [Indexed: 02/01/2023] Open
Abstract
Embryonal rhabdomyosarcoma (ERMS) is the most common soft tissue cancer in children. The prognosis of patients with relapsed or metastatic disease remains poor. ERMS genomes show few recurrent mutations, suggesting that other molecular mechanisms such as epigenetic regulation might play a major role in driving ERMS tumor biology. In this study, we have demonstrated the diverse roles of histone deacetylases (HDACs) in the pathogenesis of ERMS by characterizing effects of HDAC inhibitors, trichostatin A (TSA) and suberoylanilide hydroxamic acid (SAHA; also known as vorinostat) in vitro and in vivo. TSA and SAHA suppress ERMS tumor growth and progression by inducing myogenic differentiation as well as reducing the self-renewal and migratory capacity of ERMS cells. Differential expression profiling and pathway analysis revealed downregulation of key oncogenic pathways upon HDAC inhibitor treatment. By gain-of-function, loss-of-function, and chromatin immunoprecipitation (ChIP) studies, we show that Notch1- and EphrinB1-mediated pathways are regulated by HDACs to inhibit differentiation and enhance migratory capacity of ERMS cells, respectively. Our study demonstrates that aberrant HDAC activity plays a major role in ERMS pathogenesis. Druggable targets in the molecular pathways affected by HDAC inhibitors represent novel therapeutic options for ERMS patients.
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Affiliation(s)
| | - Michael Phelps
- Department of Pathology, University of Washington, Seattle, Washington, United States of America
| | - Theo K. Bammler
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, United States of America
| | - James W. MacDonald
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, United States of America
| | - Isaac Jenkins
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Eleanor Y. Chen
- Department of Pathology, University of Washington, Seattle, Washington, United States of America
- * E-mail:
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Blattmann C, Oertel S, Thiemann M, Dittmar A, Roth E, Kulozik AE, Ehemann V, Weichert W, Huber PE, Stenzinger A, Debus J. Histone deacetylase inhibition sensitizes osteosarcoma to heavy ion radiotherapy. Radiat Oncol 2015; 10:146. [PMID: 26178881 PMCID: PMC4504102 DOI: 10.1186/s13014-015-0455-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 07/06/2015] [Indexed: 01/20/2023] Open
Abstract
Background Minimal improvements in treatment or survival of patients with osteosarcoma have been achieved during the last three decades. Especially in the case of incomplete tumor resection, prognosis remains poor. Heavy ion radiotherapy (HIT) and modern anticancer drugs like histone deacetylase inhibitors (HDACi) have shown promising effects in osteosarcoma in vitro. In this study, we tested the effect of HIT and the combination of HIT and the HDACi suberoylanilide hydroxamic acid (SAHA) in a xenograft mouse model. Methods Osteosarcoma xenografts were established by subcutaneous injection of KHOS-24OS cells and treated with either vehicle (DMSO), SAHA, HIT or HIT and SAHA. Tumor growth was determined and tumor necrosis, proliferation rate, apoptotic rate as well as vessel density were evaluated. Results Here, we show that the combination of HIT and SAHA induced a significant delay of tumor growth through increased rate of apoptosis, increased expression of p53 and p21Waf1/Cip1, inhibition of proliferation and angiogenesis compared to tumors treated with HIT only. Conclusion HIT and in particular the combination of HIT and histone deacetylase inhibition is a promising treatment strategy in OS and may be tested in clinical trials.
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Affiliation(s)
- Claudia Blattmann
- Department of Pediatric Oncology, Hematology and Immunology, University Children's, Hospital of Heidelberg, Heidelberg, Germany. .,Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany. .,German Cancer Consortium (DKTK), Heidelberg, Germany. .,Pädiatrie 5, Olgahospital, Kriegsbergstr. 62, 70174, Stuttgart, Germany.
| | - Susanne Oertel
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany. .,Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.
| | - Markus Thiemann
- Department of Pediatric Oncology, Hematology and Immunology, University Children's, Hospital of Heidelberg, Heidelberg, Germany. .,Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.
| | - Anne Dittmar
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany. .,Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.
| | - Eva Roth
- Department of Pediatric Oncology, Hematology and Immunology, University Children's, Hospital of Heidelberg, Heidelberg, Germany. .,Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.
| | - Andreas E Kulozik
- Department of Pediatric Oncology, Hematology and Immunology, University Children's, Hospital of Heidelberg, Heidelberg, Germany. .,German Cancer Consortium (DKTK), Heidelberg, Germany. .,National Center for Tumor Diseases (NCT), University of Heidelberg, Heidelberg, Germany.
| | - Volker Ehemann
- Institute of Pathology, University of Heidelberg, Heidelberg, Germany.
| | - Wilko Weichert
- Institute of Pathology, University of Heidelberg, Heidelberg, Germany. .,German Cancer Consortium (DKTK), Heidelberg, Germany. .,National Center for Tumor Diseases (NCT), University of Heidelberg, Heidelberg, Germany.
| | - Peter E Huber
- Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.
| | | | - Jürgen Debus
- Department of Radiation Oncology, University of Heidelberg, Heidelberg, Germany. .,Department of Radiation Oncology, German Cancer Research Center, Heidelberg, Germany.
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Schaue D, McBride WH. Opportunities and challenges of radiotherapy for treating cancer. Nat Rev Clin Oncol 2015; 12:527-40. [PMID: 26122185 DOI: 10.1038/nrclinonc.2015.120] [Citation(s) in RCA: 411] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The past 20 years have seen dramatic changes in the delivery of radiation therapy, but the impact of radiobiology on the clinic has been far less substantial. A major consideration in the use of radiotherapy has been on how best to exploit differences between the tumour and host tissue characteristics, which in the past has been achieved empirically by radiation-dose fractionation. New advances are uncovering some of the mechanistic processes that underlie this success story. In this Review, we focus on how these processes might be targeted to improve the outcome of radiotherapy at the individual patient level. This approach would seem a more productive avenue of treatment than simply trying to increase the radiation dose delivered to the tumour.
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Affiliation(s)
- Dörthe Schaue
- Department of Radiation Oncology, Room B3-109, Center for Health Sciences, Westwood, University of California, Los Angeles (UCLA), Los Angeles, CA 90095-1714, USA
| | - William H McBride
- Department of Radiation Oncology, Room B3-109, Center for Health Sciences, Westwood, University of California, Los Angeles (UCLA), Los Angeles, CA 90095-1714, USA
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44
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Ernst A, Anders H, Kapfhammer H, Orth M, Hennel R, Seidl K, Winssinger N, Belka C, Unkel S, Lauber K. HSP90 inhibition as a means of radiosensitizing resistant, aggressive soft tissue sarcomas. Cancer Lett 2015; 365:211-22. [PMID: 26044951 DOI: 10.1016/j.canlet.2015.05.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 05/20/2015] [Accepted: 05/29/2015] [Indexed: 01/27/2023]
Abstract
Radiotherapy is an essential part of multi-modal treatment for soft tissue sarcomas. Treatment failure is commonly attributed to radioresistance, but comprehensive analyses of radiosensitivity are not available, and suitable biomarkers or candidates for targeted radiosensitization are scarce. Here, we systematically analyzed the intrinsic radioresistance of a panel of soft tissue sarcoma cell lines, and extracted scores of radioresistance by principal component analysis (PCA). To identify molecular markers of radioresistance, transcriptomic profiling of DNA damage response regulators was performed. The expression levels of HSP90 and its clients ATR, ATM, and NBS1 revealed strong, positive correlations with the PCA-derived radioresistance scores. Their functional involvement was addressed by HSP90 inhibition, which preferentially sensitized radioresistant sarcoma cells and was accompanied by delayed γ-H2AX foci clearance and HSP90 client protein degradation. The induction of apoptosis and necrosis was not significantly enhanced, but increased levels of basal and irradiation-induced senescence upon HSP90 inhibition were detected. Finally, evaluation of our findings in the TCGA soft tissue sarcoma cohort revealed elevated expression levels of HSP90, ATR, ATM, and NBS1 in a relevant subset of cases with particularly poor prognosis, which might preferentially benefit from HSP90 inhibition in combination with radiotherapy in the future.
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Affiliation(s)
- Anne Ernst
- Clinic for Radiotherapy and Radiation Oncology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Heike Anders
- Clinic for Radiotherapy and Radiation Oncology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Heidi Kapfhammer
- Clinic for Radiotherapy and Radiation Oncology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Michael Orth
- Clinic for Radiotherapy and Radiation Oncology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Roman Hennel
- Clinic for Radiotherapy and Radiation Oncology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Karin Seidl
- Clinic for Radiotherapy and Radiation Oncology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Nicolas Winssinger
- Department of Organic Chemistry, NCCR Chemical Biology, University of Geneva, Geneva, Switzerland
| | - Claus Belka
- Clinic for Radiotherapy and Radiation Oncology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Steffen Unkel
- Department of Medical Statistics, University Medical Center Göttingen, Göttingen, Germany
| | - Kirsten Lauber
- Clinic for Radiotherapy and Radiation Oncology, Ludwig-Maximilians-University Munich, Munich, Germany.
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Olcina MM, O'Dell S, Hammond EM. Targeting chromatin to improve radiation response. Br J Radiol 2015; 88:20140649. [PMID: 25513745 PMCID: PMC4651187 DOI: 10.1259/bjr.20140649] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 12/09/2014] [Accepted: 12/15/2014] [Indexed: 01/08/2023] Open
Abstract
Chromatin, the structure formed by the wrapping of approximately 146 base pairs of DNA around an octamer of histones, has a profound impact on numerous DNA-based processes. Chromatin modifications and chromatin remodellers have recently been implicated in important aspects of the DNA damage response including facilitating the initial sensing of the damage as well as subsequent recruitment of repair factors. Radiation is an effective cancer therapy for a large number of tumours, and there is considerable interest in finding approaches that might further increase the efficacy of radiotherapy. The use of radiation leads to the generation of DNA damage and, therefore, agents that can affect the sensing and repair of DNA damage may have an impact on overall radiation efficacy. The chromatin modifications as well as chromatin modifiers that have been associated with the DNA damage response will be summarized in this review. An emphasis will be placed on those processes that can be pharmacologically manipulated with currently available inhibitors. The rationale for the use of these inhibitors in combination with radiation will also be described.
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Affiliation(s)
- M M Olcina
- CR-UK/MRC Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, UK
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Li L, Sun Y, Liu J, Wu X, Chen L, Ma L, Wu P. Histone deacetylase inhibitor sodium butyrate suppresses DNA double strand break repair induced by etoposide more effectively in MCF-7 cells than in HEK293 cells. BMC BIOCHEMISTRY 2015; 16:2. [PMID: 25592494 PMCID: PMC4304611 DOI: 10.1186/s12858-014-0030-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 12/17/2014] [Indexed: 01/21/2023]
Abstract
Background Histone deacetylase inhibitors (HDACi’s) are emerging as promising anticancer drugs alone or in combination with chemotherapy or radiotherapy agents. Previous research suggests that HDACi’s have a high degree of selectivity for killing cancer cells, but little is known regarding the impact of different cellular contexts on HDACi treatment. It is likely that the molecular mechanisms of HDACi’s involve processes that depend on the chromatin template, such as DNA damage and repair. We sought to establish the connection between the HDACi sodium butyrate and DNA double-strand break (DSB) damage in human breast cancer MCF-7 and non-cancerous human embryonic kidney293 (HEK293) cells. Results Sodium butyrate inhibited the proliferation of both HEK293 and MCF-7 cells in a dose- and time- dependent manner, but the effects on MCF-7 cells were more obvious. This differential effect on cell growth was not explained by differences in cell cycle arrest, as sodium butyrate caused an arrest in G1/G2 phase and a decrease in S phase for both cell lines. At high doses of sodium butyrate or in combination with etoposide, MCF-7 cells formed fewer colonies than HEK293 cells. Furthermore, sodium butyrate enhanced the formation of etoposide-induced γ-H2AX foci to a greater extent in MCF-7 than in HEK293 cells. The two cells also displayed differential patterns in the nuclear expression of DNA DSB repair proteins, which could, in part, explain the cytotoxic effects of sodium butyrate. Conclusions These studies suggest that sodium butyrate treatment leads to a different degree of chromatin relaxation in HEK293 and cancerous MCF-7 cells, which results in differential sensitivity to the toxic effects of etoposide in controlling damaged DNA repair.
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Affiliation(s)
- Liping Li
- Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Guangdong Medical College, Xincheng Road, Dongguan, 523808, P R China. .,Department of Biochemistry, School of Basic Medicine, Guangdong Medical College, Dongguan, 523808, P R China.
| | - Youxiang Sun
- Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Guangdong Medical College, Xincheng Road, Dongguan, 523808, P R China. .,Department of Biochemistry, School of Basic Medicine, Guangdong Medical College, Dongguan, 523808, P R China.
| | - Jiangqin Liu
- Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Guangdong Medical College, Xincheng Road, Dongguan, 523808, P R China.
| | - Xiaodan Wu
- Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Guangdong Medical College, Xincheng Road, Dongguan, 523808, P R China. .,Department of Biochemistry, School of Basic Medicine, Guangdong Medical College, Dongguan, 523808, P R China.
| | - Lijun Chen
- Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Guangdong Medical College, Xincheng Road, Dongguan, 523808, P R China. .,Department of Biochemistry, School of Basic Medicine, Guangdong Medical College, Dongguan, 523808, P R China.
| | - Li Ma
- Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Guangdong Medical College, Xincheng Road, Dongguan, 523808, P R China.
| | - Pengfei Wu
- Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Guangdong Medical College, Xincheng Road, Dongguan, 523808, P R China. .,Department of Biochemistry, School of Basic Medicine, Guangdong Medical College, Dongguan, 523808, P R China.
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Wong P, Houghton P, Kirsch DG, Finkelstein SE, Monjazeb AM, Xu-Welliver M, Dicker AP, Ahmed M, Vikram B, Teicher BA, Coleman CN, Machtay M, Curran WJ, Wang D. Combining targeted agents with modern radiotherapy in soft tissue sarcomas. J Natl Cancer Inst 2014; 106:dju329. [PMID: 25326640 DOI: 10.1093/jnci/dju329] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Improved understanding of soft-tissue sarcoma (STS) biology has led to better distinction and subtyping of these diseases with the hope of exploiting the molecular characteristics of each subtype to develop appropriately targeted treatment regimens. In the care of patients with extremity STS, adjunctive radiation therapy (RT) is used to facilitate limb and function, preserving surgeries while maintaining five-year local control above 85%. In contrast, for STS originating from nonextremity anatomical sites, the rate of local recurrence is much higher (five-year local control is approximately 50%) and a major cause of death and morbidity in these patients. Incorporating novel technological advancements to administer accurate RT in combination with novel radiosensitizing agents could potentially improve local control and overall survival. RT efficacy in STS can be increased by modulating biological pathways such as angiogenesis, cell cycle regulation, cell survival signaling, and cancer-host immune interactions. Previous experiences, advancements, ongoing research, and current clinical trials combining RT with agents modulating one or more of the above pathways are reviewed. The standard clinical management of patients with STS with pretreatment biopsy, neoadjuvant treatment, and primary surgery provides an opportune disease model for interrogating translational hypotheses. The purpose of this review is to outline a strategic vision for clinical translation of preclinical findings and to identify appropriate targeted agents to combine with radiotherapy in the treatment of STS from different sites and/or different histology subtypes.
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Affiliation(s)
- Philip Wong
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW)
| | - Peter Houghton
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW)
| | - David G Kirsch
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW)
| | - Steven E Finkelstein
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW)
| | - Arta M Monjazeb
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW)
| | - Meng Xu-Welliver
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW)
| | - Adam P Dicker
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW)
| | - Mansoor Ahmed
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW)
| | - Bhadrasain Vikram
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW)
| | - Beverly A Teicher
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW)
| | - C Norman Coleman
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW)
| | - Mitchell Machtay
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW)
| | - Walter J Curran
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW)
| | - Dian Wang
- Department of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada (PW); Research Institute at Nationwide Children's Hospital, Columbus, OH (PH); Departments of Radiation Oncology and Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC (DGK); 21st Century Oncology Translational Research Consortium (TRC) Headquarters, Scottsdale, AZ (SEF); Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, Sacramento, CA (AMM); Department of Radiation Oncology, the Ohio State University, Columbus, OH (MXW); Department of Radiation Oncology, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA (APD); Radiotherapy Development Branch & Molecular Radiation Therapeutics Branch, Radiation Research Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, MD (MA, CNC); Clinical Radiation Oncology Branch, National Cancer Institute, Bethesda, MD (BV); Molecular Pharmacology Branch, National Cancer Institute, Bethesda, MD (BAT); Department of Radiation Oncology, University Hospitals Case Medical Center, Cleveland, OH (MM); Winship Cancer Institute, Woodruff Health Science Center, Emory University, Atlanta, GA (WJC); Department of Radiation Oncology, Rush University Medical Center, Chicago, IL (DW).
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Zhou Y, Niu J, Li S, Hou H, Xu Y, Zhang W, Jiang Y. Radioprotective effects of valproic acid, a histone deacetylase inhibitor, in the rat brain. Biomed Rep 2014; 3:63-69. [PMID: 25469249 DOI: 10.3892/br.2014.367] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 08/27/2014] [Indexed: 01/08/2023] Open
Abstract
Radiotherapy is commonly used in the treatment of brain tumors but can cause significant damage to surrounding normal brain. The radioprotective effects of valproic acid (VPA) on normal tissue in the rat brain were evaluated following irradiation. Male Wistar rats were used in the present study and 48 rats were randomly divided into four groups consisting of 12 rats each. The whole-brain irradiation (WBI) was delivered by X-ray and the rats received the following treatment once a day for 5 days. The control group (sham-exposed group) received sham irradiation plus physiological saline. The VPA group received sham irradiation plus 150 mg VPA/kg. The X-ray group received WBI plus physiological saline. The combined group received WBI plus 150 mg/kg intraperitoneally VPA. A total of 6 months post-irradiation, the rats were sacrificed and the brains were harvested. Cell apoptosis in the cortex was determined by immunohistochemistry 24 h post-irradiation using an antibody for protein caspase-3. Transmission electron microscope (TEM) analyses were used to assess the effects of VPA on the radioprotection of rat normal brain cells 6 months post-irradiation. The weights of the animals in the TEM group measured over the two weeks after the first injection of VPA were also observed. Histological findings demonstrated that apoptosis occurred on the cortex 1 day after treatment, peaking in the X-ray group. The cells of the combined group showed a moderate caspase-3 staining compared to the X-ray group. There was a trend towards a lower body weight of the X-ray group following irradiation compared to either no-irradiation or rats of the combined group, although there was no significant difference in the average weight between the combined group and irradiated rats. Mild swelling of the capillary endothelial cells in the irregular lumen was observed in the combined group, whereas the X-ray group showed a severe structural disorder. In conclusion, VPA supplementation during radiotherapy may be beneficial for radioprotection following WBI by reducing normal brain cell injury.
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Affiliation(s)
- Yong Zhou
- Cancer Centre, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Junjie Niu
- Cancer Centre, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Shupeng Li
- Cancer Centre, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Huaying Hou
- Cancer Centre, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Ying Xu
- Cancer Centre, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Wei Zhang
- Cancer Centre, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Yuhua Jiang
- Cancer Centre, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
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Heinicke U, Fulda S. Chemosensitization of rhabdomyosarcoma cells by the histone deacetylase inhibitor SAHA. Cancer Lett 2014; 351:50-8. [DOI: 10.1016/j.canlet.2014.04.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 04/23/2014] [Accepted: 04/26/2014] [Indexed: 11/15/2022]
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50
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Barazzuol L, Jeynes JCG, Merchant MJ, Wéra AC, Barry MA, Kirkby KJ, Suzuki M. Radiosensitization of glioblastoma cells using a histone deacetylase inhibitor (SAHA) comparing carbon ions with X-rays. Int J Radiat Biol 2014; 91:90-8. [DOI: 10.3109/09553002.2014.946111] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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