1
|
Soleimani M, Elmi F, Mousavie Anijdan SH, Mitra Elmi M. Evaluating the Radiosensitization Effect of Hydroxyapatite Nanoparticles on Human Breast Adenocarcinoma Cell Line and Fibroblast. Iran J Med Sci 2020; 45:368-376. [PMID: 33060880 PMCID: PMC7519409 DOI: 10.30476/ijms.2020.46796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Background: Nanohydroxyapatite (nHAP) exhibit anti-proliferative effects on various cancer cells. However, to date, there are only
a few studies on the radiosensitization effect of nHAP. The present study aimed to investigate the possible enhancement of
the radiosensitization effect of nHAP on human breast adenocarcinoma cancer (MCF-7) and fibroblast. Methods: nHAP was extracted from fish scales using the thermal alkaline method and characterized at Babol University of Medical Sciences (Babol, Iran)
in 2017. The anti-proliferative and the radiosensitization effects of nHAP were investigated by 3-(4, 5-Dimethylthiazol-2-yl)-2, 5-Diphenyltetrazolium
Bromide (MTT), clonogenic assay, and apoptosis assay. MCF-7 cells and fibroblasts were incubated with different concentrations of nHAP
and at different periods. The MTT solution was added and the absorbance was measured at 570 nm. The MCF-7 cells were exposed to 0, 1.5,
3.5, and 5 Gy X-ray irradiation and incubated for 10-14 days. The data were compared using the one-way analysis of variance (ANOVA) followed by the post hoc tests (Tukey’s method). Results: The results showed that nHAP significantly inhibited the growth of MCF-7 cells compared with controls (P<0.001), but the difference was
not statistically significant for fibroblasts (P=0.686 at 400 µg/mL at 72 hours). After 48 hours, the proliferation of MCF-7 cells and fibroblasts
was inhibited by about 81% and 34% at 400 µg/mL concentration, respectively. The radiosensitization enhancement factor for MCF-7 cells and fibroblasts
at a dose of 3.5 Gy and 100 μg/mL concentration were 1.87 and 1.3, respectively. Conclusion: nHAP can be considered as a breast cancer radiosensitization agent with limited damage to the surrounding healthy tissue.
Collapse
Affiliation(s)
- Mitra Soleimani
- Student Research Committee, Department of Medical Physics, Radiobiology and Protection, Babol University of Medical Sciences, Babol, Iran
| | - Fatemeh Elmi
- Department of Marine Chemistry, School of Marine and Oceanic Sciences, University of Mazandaran, Babolsar, Iran
| | | | - Maryam Mitra Elmi
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| |
Collapse
|
2
|
Chevalier B, Pasquier D, Lartigau EF, Chargari C, Schernberg A, Jannin A, Mirabel X, Vantyghem MC, Escande A. Metformin: (future) best friend of the radiation oncologist? Radiother Oncol 2020; 151:95-105. [PMID: 32592892 DOI: 10.1016/j.radonc.2020.06.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/10/2020] [Accepted: 06/19/2020] [Indexed: 02/08/2023]
Abstract
Several molecules are being investigated for their ability to enhance the anti-tumor effect of radiotherapy. The widely prescribed antidiabetic drug metformin has been suggested to possess anti-cancer activity; data indicate that metformin could also enhance radiation sensitivity. The purpose of this review is to summarize current knowledge on the specific effect of metformin in the field of RT, while also discussing the many unknowns that persist. Preclinical models point to multiple mechanisms involved in the radiosensitizing effects of metformin that are mainly linked to mitochondrial complex I inhibition and AMP-activated protein kinase. Transposition of results from bench to bedside will be discussed through the lens of the drug concentration, its potential limits in human settings, and possible alternatives. Clinical data suggest metformin improves progression-free and overall survival in patients for many different cancers treated with RT; nevertheless, the results are not always consistent. The main limitations of the reviewed literature are the retrospective nature of studies, and most of the time, a lack of information on MTF treatment duration and the administered dosages. Despite these limitations, the possible mechanisms of the role of metformin and its utility in enhancing radiotherapy treatments are analyzed. Ongoing clinical trials are also discussed.
Collapse
|
3
|
Hasse FC, Koerber SA, Prigge ES, Liermann J, von Knebel Doeberitz M, Debus J, Sterzing F. Overcoming radioresistance in WiDr cells with heavy ion irradiation and radiosensitization by 2-deoxyglucose with photon irradiation. Clin Transl Radiat Oncol 2019; 19:52-58. [PMID: 31517070 PMCID: PMC6733777 DOI: 10.1016/j.ctro.2019.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 08/14/2019] [Accepted: 08/17/2019] [Indexed: 12/31/2022] Open
Abstract
2-DG acts as a radiosensitizer to photons depending on the time of its application. There is no sensitization to 12C irradiation by 2-DG. 12C combination therapy still has the higher dose effectiveness.
Background and purpose Radiosensitizers and heavy ion irradiation could improve therapy for female patients with malignant tumors located in the pelvic region through dose reduction. Aim of the study was to investigate the radiosensitizing potential of 2-deoxy-d-glucose (2-DG) in combination with carbon ion-irradiation (12C) in representative cell lines of cancer in the female pelvic region. Materials and methods The human cervix carcinoma cell line CaSki and the colorectal carcinoma cell line WiDr were used. 2-DG was employed in two different settings, pretreatment and treatment simultaneous to irradiation. Clonogenic survival, α and β values for application of the linear quadratic model and relative biological effectiveness (RBE) were determined. ANOVA tests were used for statistical group comparison. Isobolograms were generated for curve comparisons. Results The comparison of monotherapy with 12C versus photons yielded RBE values of 2.4 for CaSki and 3.5 for WiDr along with a significant increase of α values in the 12C setting. 2-DG monotherapy reduced the colony formation of both cell lines. Radiosensitization was found in WiDr for the combination of photon irradiation with synchronous application of 2-DG. The same setup for 12C showed no radiosensitization, but rather an additive effect. In all settings with CaSki, the combination of irradiation and 2-DG exhibited additive properties. Conclusion The combination of 2-DG and photon therapy, as well as irradiation with carbon ions can overcome radioresistance of tumor cells such as WiDr.
Collapse
Affiliation(s)
- Felix Christian Hasse
- Department of Radiation Oncology, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
| | - Stefan Alexander Koerber
- Department of Radiation Oncology, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
| | - Elena Sophie Prigge
- Department of Applied Tumor Biology, Institute of Pathology, University Hospital Heidelberg, Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Jakob Liermann
- Department of Radiation Oncology, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
| | - Magnus von Knebel Doeberitz
- Department of Applied Tumor Biology, Institute of Pathology, University Hospital Heidelberg, Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Juergen Debus
- Department of Radiation Oncology, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
| | - Florian Sterzing
- Department of Radiation Oncology, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
| |
Collapse
|
4
|
Oldenborg S, Rasch CRN, van Os R, Kusumanto YH, Oei BS, Venselaar JL, Heymans MW, Zum Vörde Sive Vörding PJ, Crezee H, van Tienhoven G. Reirradiation + hyperthermia for recurrent breast cancer en cuirasse. Strahlenther Onkol 2018; 194:206-14. [PMID: 29264624 DOI: 10.1007/s00066-017-1241-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 11/19/2017] [Indexed: 11/03/2022]
Abstract
Background and purpose Patients with irresectable locoregional recurrent breast cancer en cuirasse (BCEC) do not have effective curative treatment options. Hyperthermia, the elevation of tumor temperature to 40–45 °C, is a well-established radio- and chemotherapy sensitizer. A total of 196 patients were treated with reirradiation and hyperthermia (reRT+HT) at two Dutch institutes from 1982–2005. The palliative effect was evaluated in terms of clinical outcome and toxicity. Patients and methods All patients received previous irradiation to a median dose of 50 Gy. In all, 75% of patients received 1–6 treatment modalities for previous tumor recurrences. ReRT consisted of 8 × 4 Gy given twice a week or 12 × 3 Gy given four times a week. Superficial hyperthermia was added once or twice a week. Tumor area comprised ≥½ of the ipsilateral chest wall. Results Overall clinical response rate was 72% (complete response [CR] 30%, partial response [PR] 42%, stable disease [SD] 22%, progressive disease [PD] 6%). The local progression-free rate at 1 year was 24%. Median survival was 6.9 months. Forty-three percent of our patients with CR, PR, SD after treatment remained infield progression-free until death or last follow-up. Acute ≥grade 3 toxicity occurred in 33% of patients, while late ≥grade 3 toxicity was recorded in 14% of patients. Tumor ulceration prior to treatment had a negative impact on both clinical outcome and toxicity. Conclusion ReRT+HT provides sustainable palliative tumor control, despite refractory, extensive tumor growth. Compared to currently available systemic treatment options, reRT+HT is more effective with less toxicity. Electronic supplementary material The online version of this article (10.1007/s00066-017-1241-7) contains supplementary material, which is available to authorized users.
Collapse
|
5
|
Borhani S, Mozdarani H, Babalui S, Bakhshandeh M, Nosrati H. In Vitro Radiosensitizing Effects of Temozolomide on U87MG Cell Lines of Human Glioblastoma Multiforme. Iran J Med Sci 2017; 42:258-265. [PMID: 28533574 PMCID: PMC5429494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Glioma is the most common primary brain tumor with poor prognosis. Temozolomide (TMZ) has been used with irradiation (IR) to treat gliomas. The aim of the present study was to evaluate the cytotoxic and radiosensitizing effect of TMZ when combined with high-dose and high-dose rate of gamma irradiation in vitro. METHODS Two 'U87MG' cell lines and skin fibroblast were cultured and assigned to five groups for 24, 48, and 72 hours. The groups were namely, TMZ group (2000 μM/L), IR group (5 Gy), TMZ plus IR group, control group, and control solvent group. MTT assay was applied to evaluate cell viability. Data were analyzed with SPSS 21.0 software using one-way ANOVA and Kruskal-Wallis test. P<0.05 were considered statistically significant. RESULTS The slope of growth curve U87MG cells in semi-logarithmic scale was equal to 27.36±0.89 hours. The viability of cells was determined for different TMZ and IR treatment groups. In terms of cell viability, there were no significant differences between the control and control solvent groups (P=0.35) and between treated group by IR (5 Gy) alone and TMZ (2000 µM/ml) alone (P=0.15). Data obtained for the cell viability of combined TMZ plus IR in both cell lines compared to TMZ or IR treated group alone showed a significant difference (P=0.002). CONCLUSION The evaluation of cells viability showed that TMZ in combination with IR on glioma cells led to a significant radiosensitivity compared to IR alone.
Collapse
Affiliation(s)
- Samira Borhani
- Department of Radiology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hossein Mozdarani
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran,Correspondence: Hossein Mozdarani, Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, P. O. Box: 14115-111, Tehran, Iran Tel: +98 21 82883830 Fax: +98 21 88006544
| | - Somayyeh Babalui
- Radiotherapy Oncology, Cancer Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohsen Bakhshandeh
- Radiotherapy Oncology, Cancer Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Hassan Nosrati
- Radiotherapy Oncology, Cancer Research Center, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
6
|
Yamamoto VN, Thylur DS, Bauschard M, Schmale I, Sinha UK. Overcoming radioresistance in head and neck squamous cell carcinoma. Oral Oncol 2016; 63:44-51. [PMID: 27938999 DOI: 10.1016/j.oraloncology.2016.11.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 08/29/2016] [Accepted: 11/06/2016] [Indexed: 12/28/2022]
Abstract
Radiation therapy plays an essential role in the treatment of head and neck squamous cell carcinoma (HNSCC), yet therapeutic efficacy is hindered by treatment-associated toxicity and tumor recurrence. In comparison to other cancers, innovation has proved challenging, with the epidermal growth factor receptor (EGFR) antibody cetuximab being the only new radiosensitizing agent approved by the FDA in over half a century. This review examines the physiological mechanisms that contribute to radioresistance in HNSCC as well as preclinical and clinical data regarding novel radiosensitizing agents, with an emphasis on those with highest translational promise.
Collapse
Affiliation(s)
- Vicky N Yamamoto
- USC Tina and Rick Caruso Department of Otolaryngology-Head & Neck Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.
| | - David S Thylur
- USC Tina and Rick Caruso Department of Otolaryngology-Head & Neck Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Michael Bauschard
- USC Tina and Rick Caruso Department of Otolaryngology-Head & Neck Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Isaac Schmale
- Department of Otolaryngology-Head & Neck Surgery, University of Rochester Medical Center, Rochester, NY, United States
| | - Uttam K Sinha
- USC Tina and Rick Caruso Department of Otolaryngology-Head & Neck Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| |
Collapse
|
7
|
Khoram NM, Bigdeli B, Nikoofar A, Goliaei B. Caffeic Acid Phenethyl Ester Increases Radiosensitivity of Estrogen Receptor-Positive and -Negative Breast Cancer Cells by Prolonging Radiation-Induced DNA Damage. J Breast Cancer 2016; 19:18-25. [PMID: 27066092 PMCID: PMC4822103 DOI: 10.4048/jbc.2016.19.1.18] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 12/17/2015] [Indexed: 12/14/2022] Open
Abstract
Purpose Breast cancer is an important cause of death among women. The development of radioresistance in breast cancer leads to recurrence after radiotherapy. Caffeic acid phenethyl ester (CAPE), a polyphenolic compound of honeybee propolis, is known to have anticancer properties. In this study, we examined whether CAPE enhanced the radiation sensitivity of MDA-MB-231 (estrogen receptor-negative) and T47D (estrogen receptor-positive) cell lines. Methods The cytotoxic effect of CAPE on MDA-MB-231 and T47D breast cancer cells was evaluated by performing an 3-(4,5-dimethylthiazol-2-yl)-2,5 diphenyltetrazolium bromide (MTT) assay. To assess clonogenic ability, MDA-MB-231 and T47D cells were treated with CAPE (1 µM) for 72 hours before irradiation, and then, a colony assay was performed. A comet assay was used to determine the number of DNA strand breaks at four different times. Results CAPE decreased the viability of both cell lines in a dose- and time-dependent manner. In the clonogenic assay, pretreatment of cells with CAPE before irradiation significantly reduced the surviving fraction of MDA-MB-231 cells at doses of 6 and 8 Gy. A reduction in the surviving fraction of T47D cells was observed relative to MDA-MB-231 at lower doses of radiation. Additionally, CAPE maintained radiation-induced DNA damage in T47D cells for a longer period than in MDA-MB-231 cells. Conclusion Our results indicate that CAPE impairs DNA damage repair immediately after irradiation. The induction of radiosensitivity by CAPE in radioresistant breast cancer cells may be caused by prolonged DNA damage.
Collapse
Affiliation(s)
- Nastaran Masoudi Khoram
- Laboratory of Biophysics and Molecular Biology, Institute of Biochemistry and Biophysics, University of Tehran, Iran
| | - Bahareh Bigdeli
- Laboratory of Biophysics and Molecular Biology, Institute of Biochemistry and Biophysics, University of Tehran, Iran
| | - Alireza Nikoofar
- Department of Radiotherapy, Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Bahram Goliaei
- Laboratory of Biophysics and Molecular Biology, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| |
Collapse
|
8
|
Lim YJ, Jeon SR, Koh JM, Wu HG. Tumor Growth Suppression and Enhanced Radioresponse by an Exogenous Epidermal Growth Factor in Mouse Xenograft Models with A431 Cells. Cancer Res Treat 2015; 47:921-30. [PMID: 25600061 PMCID: PMC4614224 DOI: 10.4143/crt.2014.153] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Accepted: 08/02/2014] [Indexed: 02/05/2023] Open
Abstract
Purpose The purpose of this study was to evaluate whether an exogenous epidermal growth factor (EGF) could induce anti-tumor and radiosensitizing effects in vivo. Materials and Methods BALB/c-nu mice that were inoculated with A431 (human squamous cell carcinoma) cells in the right hind legs were divided into five groups: I (no treatment), II (EGF for 6 days), III (EGF for 20 days), IV (radiotherapy [RT]), and V (RT plus concomitant EGF). EGF was administered intraperitoneally (5 mg/kg) once a day and the RT dose was 30 Gy in six fractions. Hematoxylin and eosin (H&E) stained sections of tumor, liver, lung, and kidney tissues were investigated. Additionally, tumors were subjected to immunohistochemistry staining with caspase-3. Results EGF for 6 days decreased tumor volume, but it approached the level of the control group at the end of follow-up (p=0.550). The duration of tumor shrinkage was prolonged in group V while the slope of tumor re-growth phase was steeper in group IV (p=0.034). EGF for 20 days decreased tumor volume until the end of the observation period (p < 0.001). Immunohistochemistry revealed that mice in group V showed stronger intensity than those in group IV. There were no abnormal histological findings upon H&E staining of the normal organs. Conclusion EGF-induced anti-tumor effect was ascertained in the xenograft mouse models with A431 cells. Concomitant use of EGF has the potential role as a radiosensitizer in the design of fractionated irradiation.
Collapse
Affiliation(s)
- Yu Jin Lim
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea
| | - Sang-Rok Jeon
- Cancer Research Institution, Seoul National University College of Medicine, Seoul, Korea
| | - Jae Moon Koh
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Hong-Gyun Wu
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea.,Cancer Research Institution, Seoul National University College of Medicine, Seoul, Korea.,Institute of Radiation Medicine, Medical Research Center, Seoul National University, Seoul, Korea
| |
Collapse
|
9
|
Kim JH, Kim IH, Shin JH, Kim HJ, Kim IA. Sequence-Dependent Radiosensitization of Histone Deacetylase Inhibitors Trichostatin A and SK-7041. Cancer Res Treat 2013; 45:334-42. [PMID: 24454006 PMCID: PMC3893331 DOI: 10.4143/crt.2013.45.4.334] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2013] [Accepted: 04/29/2013] [Indexed: 11/21/2022] Open
Abstract
PURPOSE This preclinical study is to determine whether the capacity of histone deacetylase (HDAC) inhibitors to enhance radiation response depends on temporal sequences of HDAC inhibition and irradiation. MATERIALS AND METHODS The effects of HDAC inhibitors trichostatin A (TSA) and SK-7041 on radiosensitivity in human lung cancer cells were examined using a clonogenic assay, exposing cells to HDAC inhibitors in various sequences of HDAC inhibition and radiation. We performed Western blot of acetylated histone H3 and flow cytometry to analyze cell cycle phase distribution. RESULTS TSA and SK-7041 augmented radiation cell lethality in an exposure time-dependent manner when delivered before irradiation. The impact of TSA and SK-7041 on radiosensitivity rapidly diminished when HDAC inhibition was delayed after irradiation. Radiation induced the acetylation of histone H3 in cells exposed to TSA, while irradiation alone had no effect on the expression of acetylated histone H3 in TSA-naïve cells. Preirradiation exposure to TSA abrogated radiation-induced G2/M-phase arrest. When delivered after irradiation, TSA had no effect on the peak of radiation-induced G2/M-phase arrest. CONCLUSION TSA and SK-7041 enhances radiosensitivity only when delivered before irradiation. Unless proven otherwise, it seems prudent to apply scheduling including preirradiation HDAC inhibition so that maximal radiosensitization is obtained.
Collapse
Affiliation(s)
- Jin Ho Kim
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea
| | - Il Han Kim
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea. ; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea. ; Institute of Radiation Medicine, Medical Research Center, Seoul National University, Seoul, Korea
| | - Jin Hee Shin
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea
| | - Hak Jae Kim
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea
| | - In Ah Kim
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea. ; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea. ; Department of Radiation Oncology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| |
Collapse
|
10
|
Touchefeu Y, Khan AA, Borst G, Zaidi SH, McLaughlin M, Roulstone V, Mansfield D, Kyula J, Pencavel T, Karapanagiotou EM, Clayton J, Federspiel MJ, Russell SJ, Garrett M, Collins I, Harrington KJ. Optimising measles virus-guided radiovirotherapy with external beam radiotherapy and specific checkpoint kinase 1 inhibition. Radiother Oncol 2013; 108:24-31. [PMID: 23849174 DOI: 10.1016/j.radonc.2013.05.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Revised: 05/26/2013] [Accepted: 05/28/2013] [Indexed: 12/18/2022]
Abstract
BACKGROUND AND PURPOSE We previously reported a therapeutic strategy comprising replication-defective NIS-expressing adenovirus combined with radioiodide, external beam radiotherapy (EBRT) and DNA repair inhibition. We have now evaluated NIS-expressing oncolytic measles virus (MV-NIS) combined with NIS-guided radioiodide, EBRT and specific checkpoint kinase 1 (Chk1) inhibition in head and neck and colorectal models. MATERIALS AND METHODS Anti-proliferative/cytotoxic effects of individual agents and their combinations were measured by MTS, clonogenic and Western analysis. Viral gene expression was measured by radioisotope uptake and replication by one-step growth curves. Potential synergistic interactions were tested in vitro by Bliss independence analysis and in in vivo therapeutic studies. RESULTS EBRT and MV-NIS were synergistic in vitro. Furthermore, EBRT increased NIS expression in infected cells. SAR-020106 was synergistic with EBRT, but also with MV-NIS in HN5 cells. MV-NIS mediated (131)I-induced cytotoxicity in HN5 and HCT116 cells and, in the latter, this was enhanced by SAR-020106. In vivo studies confirmed that MV-NIS, EBRT and Chk1 inhibition were effective in HCT116 xenografts. The quadruplet regimen of MV-NIS, virally-directed (131)I, EBRT and SAR-020106 had significant anti-tumour activity in HCT116 xenografts. CONCLUSION This study strongly supports translational and clinical research on MV-NIS combined with radiation therapy and radiosensitising agents.
Collapse
Affiliation(s)
- Yann Touchefeu
- The Institute of Cancer Research, Division of Cancer Biology, London, United Kingdom
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|