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Autsavapromporn N, Liu C, Kobayashi A, Ahmad TAFT, Oikawa M, Dukaew N, Wang J, Wongnoppavichb A, Konishic T. Emerging Role of Secondary Bystander Effects Induced by Fractionated Proton Microbeam Radiation. Radiat Res 2018; 191:211-216. [PMID: 30526323 DOI: 10.1667/rr15155.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Increased understanding of radiation-induced secondary bystander effect (RISBE) is relevant to radiation therapy since it likely contributes to normal tissue injury and tumor recurrence, subsequently resulting in treatment failure. In this work, we developed a simple method based on proton microbeam radiation and a transwell insert co-culture system to elucidate the RISBE between irradiated human lung cancer cells and nonirradiated human normal cells. A549 lung cancer cells received a single dose or fractionated doses of proton microbeam radiation to generate the primary bystander cells. These cells were then seeded on the top of the insert with secondary bystander WI-38 normal cells growing underneath in the presence or absence of gap junction intercellular communication (GJIC) inhibitor, 18-α-glycyrrhetnic acid (AGA). Cells were co-cultured before harvesting and assayed for micronuclei formation. The results of this work showed that fractionated doses of protons caused less DNA damage in the secondary bystander WI-38 cells compared to a single radiation dose, where the means differ by 20%. However, the damaging effect in the secondary bystander normal cells could be eliminated when treated with AGA. This novel work reflects our effort to demonstrate that GJIC plays a major role in the RISBE generated from the primary bystander cancer cells.
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Affiliation(s)
- Narongchai Autsavapromporn
- a Division of Radiation Oncology, Department of Radiology.,c SPICE-BIO Research Core, National Institute of Radiological Sciences International Open Laboratory, National Institutes for Quantum and Radiological Science and Technology, Inage-ku, Chiba, 263-8555 Japan
| | - Cuihua Liu
- c SPICE-BIO Research Core, National Institute of Radiological Sciences International Open Laboratory, National Institutes for Quantum and Radiological Science and Technology, Inage-ku, Chiba, 263-8555 Japan
| | - Alisa Kobayashi
- c SPICE-BIO Research Core, National Institute of Radiological Sciences International Open Laboratory, National Institutes for Quantum and Radiological Science and Technology, Inage-ku, Chiba, 263-8555 Japan
| | - Tengku Ahbrizal Farizal Tengku Ahmad
- c SPICE-BIO Research Core, National Institute of Radiological Sciences International Open Laboratory, National Institutes for Quantum and Radiological Science and Technology, Inage-ku, Chiba, 263-8555 Japan.,d Division of Agrotechnology and Biosciences, Malaysian Nuclear Agency, Bangi, 43000, Kajang, Malaysia
| | - Masakazu Oikawa
- c SPICE-BIO Research Core, National Institute of Radiological Sciences International Open Laboratory, National Institutes for Quantum and Radiological Science and Technology, Inage-ku, Chiba, 263-8555 Japan
| | - Nahathai Dukaew
- b Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200 Thailand.,c SPICE-BIO Research Core, National Institute of Radiological Sciences International Open Laboratory, National Institutes for Quantum and Radiological Science and Technology, Inage-ku, Chiba, 263-8555 Japan
| | - Jun Wang
- c SPICE-BIO Research Core, National Institute of Radiological Sciences International Open Laboratory, National Institutes for Quantum and Radiological Science and Technology, Inage-ku, Chiba, 263-8555 Japan.,e Hefei Institute of Physical Science, Chinese Academy of Sciences, Hefei, 230031 China
| | - Ariyaphong Wongnoppavichb
- b Department of Biochemistry, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200 Thailand.,c SPICE-BIO Research Core, National Institute of Radiological Sciences International Open Laboratory, National Institutes for Quantum and Radiological Science and Technology, Inage-ku, Chiba, 263-8555 Japan
| | - Teruaki Konishic
- c SPICE-BIO Research Core, National Institute of Radiological Sciences International Open Laboratory, National Institutes for Quantum and Radiological Science and Technology, Inage-ku, Chiba, 263-8555 Japan
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Mendonca MS, Turchan WT, Alpuche ME, Watson CN, Estabrook NC, Chin-Sinex H, Shapiro JB, Imasuen-Williams IE, Rangel G, Gilley DP, Huda N, Crooks PA, Shapiro RH. DMAPT inhibits NF-κB activity and increases sensitivity of prostate cancer cells to X-rays in vitro and in tumor xenografts in vivo. Free Radic Biol Med 2017; 112:318-326. [PMID: 28782644 PMCID: PMC6322835 DOI: 10.1016/j.freeradbiomed.2017.08.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 07/20/2017] [Accepted: 08/01/2017] [Indexed: 01/22/2023]
Abstract
Constitutive activation of the pro-survival transcription factor NF-κB has been associated with resistance to both chemotherapy and radiation therapy in many human cancers, including prostate cancer. Our lab and others have demonstrated that the natural product parthenolide can inhibit NF-κB activity and sensitize PC-3 prostate cancers cells to X-rays in vitro; however, parthenolide has poor bioavailability in vivo and therefore has little clinical utility in this regard. We show here that treatment of PC-3 and DU145 human prostate cancer cells with dimethylaminoparthenolide (DMAPT), a parthenolide derivative with increased bioavailability, inhibits constitutive and radiation-induced NF-κB binding activity and slows prostate cancer cell growth. We also show that DMAPT increases single and fractionated X-ray-induced killing of prostate cancer cells through inhibition of DNA double strand break repair and also that DMAPT-induced radiosensitization is, at least partially, dependent upon the alteration of intracellular thiol reduction-oxidation chemistry. Finally, we demonstrate that the treatment of PC-3 prostate tumor xenografts with oral DMAPT in addition to radiation therapy significantly decreases tumor growth and results in significantly smaller tumor volumes compared to xenografts treated with either DMAPT or radiation therapy alone, suggesting that DMAPT might have a potential clinical role as a radiosensitizing agent in the treatment of prostate cancer.
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Affiliation(s)
- Marc S Mendonca
- Departments of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN 46202 USA; Medical & Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202 USA.
| | - William T Turchan
- Departments of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN 46202 USA; Medical & Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202 USA
| | - Melanie E Alpuche
- Departments of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN 46202 USA
| | - Christopher N Watson
- Departments of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN 46202 USA; Richard L. Roudebush, VA Medical Center, Indianapolis, IN 46202 USA
| | - Neil C Estabrook
- Departments of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN 46202 USA
| | - Helen Chin-Sinex
- Departments of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN 46202 USA
| | - Jeremy B Shapiro
- Departments of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN 46202 USA
| | - Imade E Imasuen-Williams
- Departments of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN 46202 USA
| | - Gabriel Rangel
- Departments of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN 46202 USA
| | - David P Gilley
- Department of Chemistry and Applied Sciences, South Dakota School of Mines and Technology, Rapid City, SD 57701 USA
| | - Nazmul Huda
- Medical & Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202 USA
| | - Peter A Crooks
- College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Ronald H Shapiro
- Departments of Radiation Oncology, Indiana University School of Medicine, Indianapolis, IN 46202 USA; Richard L. Roudebush, VA Medical Center, Indianapolis, IN 46202 USA
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Bahreyni Toossi MT, Khademi S, Azimian H, Mohebbi S, Soleymanifard S. Assessment of The Dose-Response Relationship of Radiation-Induced Bystander Effect in Two Cell Lines Exposed to High Doses of Ionizing Radiation (6 and 8 Gy). CELL JOURNAL 2017; 19:434-442. [PMID: 28836405 DOI: 10.22074/cellj.2017.4343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 09/11/2016] [Indexed: 11/04/2022]
Abstract
OBJECTIVES The dose-response relationship of radiation-induced bystander effect (RIBE) is controversial at high dose levels. The aim of the present study is to assess RIBE at high dose levels by examination of different endpoints. MATERIALS AND METHODS This experimental study used the medium transfer technique to induce RIBE. The cells were divided into two main groups: QU-DB cells which received medium from autologous irradiated cells and MRC5 cells which received medium from irradiated QU-DB cells. Colony, MTT, and micronucleus assays were performed to quantify bystander responses. The medium was diluted and transferred to bystander cells to investigate whether medium dilution could revive the RIBE response that disappeared at a high dose. RESULTS The RIBE level in QU-DB bystander cells increased in the dose range of 0.5 to 4 Gy, but decreased at 6 and 8 Gy. The Micronucleated cells per 1000 binucleated cells (MNBN) frequency of QU-DB bystander cells which received the most diluted medium from 6 and 8 Gy QU-DB irradiated cells reached the maximum level compared to the MNBN frequency of the cells that received complete medium (P<0.0001). MNBN frequency of MRC5 cells which received the most diluted medium from 4 Gy QU-DB irradiated cells reached the maximum level compared to MNBN frequency of cells that received complete medium (P<0.0001). CONCLUSIONS Our results showed that RIBE levels decreased at doses above 4 Gy; however, RIBE increased when diluted conditioned medium was transferred to bystander cells. This finding confirmed that a negative feedback mechanism was responsible for the decrease in RIBE response at high doses. Decrease of RIBE at high doses might be used to predict that in radiosurgery, brachytherapy and grid therapy, in which high dose per fraction is applied, normal tissue damage owing to RIBE may decrease.
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Affiliation(s)
- Mohammad Taghi Bahreyni Toossi
- Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medical Physics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Sara Khademi
- Department of Medical Physics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medical Physics and Biomedical Engineering, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Hosein Azimian
- Department of Medical Physics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Shokoufeh Mohebbi
- Department of Medical Physics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Shokouhozaman Soleymanifard
- Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medical Physics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Medical Physics, Omid Hospital, Mashhad, Iran.
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