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Yu QH, Duan SY, Xing XK, Fan XM, Zhang N, Song GY, Hu YJ, Wang F, Chao TZ, Wang LT, Xu P. Generation of a competing endogenous RNA network and validation of BNIP1 expression in the lung of irradiated mice. Transl Oncol 2024; 47:102007. [PMID: 38906065 DOI: 10.1016/j.tranon.2024.102007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/30/2024] [Accepted: 05/22/2024] [Indexed: 06/23/2024] Open
Abstract
BACKGROUND Radiation-induced lung injury (RILI) is a serious complication of radiation therapy, and it is mediated by long non-coding RNAs (lncRNAs). STUDY DESIGN AND METHODS Mouse lung tissues were examined using RNA-Seq and RNA-Seq libraries 72 h after the administration of 6 Gy of X-ray irradiation. The target mRNAs were functionally annotated and the target lncRNA-based miRNAs and target miRNA-based mRNAs were predicted after irradiation to establish the lncRNA-miRNA-mRNA ceRNA axis. RESULTS The analyses showed that relative to unirradiated controls, 323 mRNAs, 114 miRNAs, and 472 lncRNAs were significantly up-regulated following irradiation, whereas 1907 mRNAs, 77 miRNAs, and 1572 lncRNAs were significantly down-regulated following irradiation. Voltage-gated ion channels, trans-membrane receptor protein tyrosine kinases, and vascular endothelial growth factor have all been associated with dysregulated miRNA-mRNA relationships. KEGG pathway analysis of the dysregulated miRNA-mRNA targets revealed involvement in pathways associated with the hedgehog signaling pathway-fly, ErbB signaling, VEGF signaling, axon guidance, and focal adhesion. KEGG analysis of differentially expressed showed enrichment of mRNAs in primary immunodeficiency, the intestinal immune axis for IgA production, hematopoietic cell lineages, systemic lupus erythematosus, and Th1 and Th2 cell differentiation. Finally, the ceRNA network revealed that BNIP1 was a critical mRNA modulated by the most significant upregulation of lncRNA E230013L22Rik. CONCLUSION In summary, the lncRNA-miRNA-mRNA ceRNA axis of RILI was constructed following irradiation in a mouse model. RNA dysregulation in the early stage of RILI may lead to severe complications at a later stage, with BNIP1 contributing to radiation-induced cellular apoptosis in RILI.
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Affiliation(s)
- Qing-Hua Yu
- School of Pharmacy, Weifang Medical University, Weifang, Shandong, 261000, China; Laboratory of Radiation-induced Diseases and Molecule-targeted Drugs, School of Food and Biomedicine, Zaozhuang University, Zaozhuang, Shandong, 277160, China
| | - Shu-Yan Duan
- Laboratory of Radiation-induced Diseases and Molecule-targeted Drugs, School of Food and Biomedicine, Zaozhuang University, Zaozhuang, Shandong, 277160, China
| | - Xue-Kun Xing
- School of Public Health, Guilin Medical University, Guilin, Guangxi, 541199, China
| | - Xin-Ming Fan
- Department of Radiotherapy, Zaozhuang Municipal Hospital, Zaozhuang, Shandong, 277100, China
| | - Nan Zhang
- Laboratory of Radiation-induced Diseases and Molecule-targeted Drugs, School of Food and Biomedicine, Zaozhuang University, Zaozhuang, Shandong, 277160, China
| | - Gui-Yuan Song
- Laboratory of Radiation-induced Diseases and Molecule-targeted Drugs, School of Food and Biomedicine, Zaozhuang University, Zaozhuang, Shandong, 277160, China; School of Public Health, Weifang Medical University, Weifang, Shandong, 261000, China
| | - Yong-Jian Hu
- Henan Key Laboratory of Medical Tissue Regeneration, Xinxiang Medical University, Xinxiang, Henan, 453003, China
| | - Fei Wang
- Laboratory of Radiation-induced Diseases and Molecule-targeted Drugs, School of Food and Biomedicine, Zaozhuang University, Zaozhuang, Shandong, 277160, China
| | - Tian-Zhu Chao
- Laboratory of Radiation-induced Diseases and Molecule-targeted Drugs, School of Food and Biomedicine, Zaozhuang University, Zaozhuang, Shandong, 277160, China
| | - Li-Tao Wang
- School of Pharmacy, Weifang Medical University, Weifang, Shandong, 261000, China
| | - Ping Xu
- Laboratory of Radiation-induced Diseases and Molecule-targeted Drugs, School of Food and Biomedicine, Zaozhuang University, Zaozhuang, Shandong, 277160, China.
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Hwang S, Jeong H, Hong EH, Joo HM, Cho KS, Nam SY. Low-dose ionizing radiation alleviates Aβ42-induced cell death via regulating AKT and p38 pathways in Drosophila Alzheimer's disease models. Biol Open 2019; 8:bio.036657. [PMID: 30670376 PMCID: PMC6398453 DOI: 10.1242/bio.036657] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Ionizing radiation is widely used in medicine and is valuable in both the diagnosis and treatment of many diseases. However, its health effects are ambiguous. Here, we report that low-dose ionizing radiation has beneficial effects in human amyloid-β42 (Aβ42)-expressing Drosophila Alzheimer's disease (AD) models. Ionizing radiation at a dose of 0.05 Gy suppressed AD-like phenotypes, including developmental defects and locomotive dysfunction, but did not alter the decreased survival rates and longevity of Aβ42-expressing flies. The same dose of γ-irradiation reduced Aβ42-induced cell death in Drosophila AD models through downregulation of head involution defective (hid), which encodes a protein that activates caspases. However, 4 Gy of γ-irradiation increased Aβ42-induced cell death without modulating pro-apoptotic genes grim, reaper and hid. The AKT signaling pathway, which was suppressed in Drosophila AD models, was activated by either 0.05 or 4 Gy γ-irradiation. Interestingly, p38 mitogen-activated protein-kinase (MAPK) activity was inhibited by exposure to 0.05 Gy γ-irradiation but enhanced by exposure to 4 Gy in Aβ42-expressing flies. In addition, overexpression of phosphatase and tensin homolog (PTEN), a negative regulator of the AKT signaling pathway, or a null mutant of AKT strongly suppressed the beneficial effects of low-dose ionizing radiation in Aβ42-expressing flies. These results indicate that low-dose ionizing radiation suppresses Aβ42-induced cell death through regulation of the AKT and p38 MAPK signaling pathways, suggesting that low-dose ionizing radiation has hormetic effects on the pathogenesis of Aβ42-associated AD. Summary: Low-dose ionizing radiation can reduce cell death by regulating AKT/p38 signaling pathway and improve Aβ42-induced symptoms in Drosophila Alzheimer's disease, suggesting that low-dose ionizing radiation may be applicable for treatment.
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Affiliation(s)
- Soojin Hwang
- Low-Dose Radiation Research Team, Radiation Health Institute, Korea Hydro & Nuclear Power Co. Ltd, Seoul 01450, Korea
| | - Haemin Jeong
- Low-Dose Radiation Research Team, Radiation Health Institute, Korea Hydro & Nuclear Power Co. Ltd, Seoul 01450, Korea
| | - Eun-Hee Hong
- Low-Dose Radiation Research Team, Radiation Health Institute, Korea Hydro & Nuclear Power Co. Ltd, Seoul 01450, Korea
| | - Hae Mi Joo
- Low-Dose Radiation Research Team, Radiation Health Institute, Korea Hydro & Nuclear Power Co. Ltd, Seoul 01450, Korea
| | - Kyoung Sang Cho
- Department of Biological Sciences, Konkuk University, Seoul 05029, Korea
| | - Seon Young Nam
- Low-Dose Radiation Research Team, Radiation Health Institute, Korea Hydro & Nuclear Power Co. Ltd, Seoul 01450, Korea
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Yun KL, Wang ZY. Target/signalling pathways of natural plant-derived radioprotective agents from treatment to potential candidates: A reverse thought on anti-tumour drugs. Biomed Pharmacother 2017; 91:1122-1151. [DOI: 10.1016/j.biopha.2017.05.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 04/15/2017] [Accepted: 05/01/2017] [Indexed: 02/07/2023] Open
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Nandi N, Tyra LK, Stenesen D, Krämer H. Acinus integrates AKT1 and subapoptotic caspase activities to regulate basal autophagy. ACTA ACUST UNITED AC 2014; 207:253-68. [PMID: 25332163 PMCID: PMC4210446 DOI: 10.1083/jcb.201404028] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
How cellular stresses up-regulate autophagy is not fully understood. One potential regulator is the Drosophila melanogaster protein Acinus (Acn), which is necessary for autophagy induction and triggers excess autophagy when overexpressed. We show that cell type-specific regulation of Acn depends on proteolysis by the caspase Dcp-1. Basal Dcp-1 activity in developing photoreceptors is sufficient for this cleavage without a need for apoptosis to elevate caspase activity. On the other hand, Acn was stabilized by loss of Dcp-1 function or by the presence of a mutation in Acn that eliminates its conserved caspase cleavage site. Acn stability also was regulated by AKT1-mediated phosphorylation. Flies that expressed stabilized forms of Acn, either the phosphomimetic Acn(S641,731D) or the caspase-resistant Acn(D527A), exhibited enhanced basal autophagy. Physiologically, these flies showed improvements in processes known to be autophagy dependent, including increased starvation resistance, reduced Huntingtin-induced neurodegeneration, and prolonged life span. These data indicate that AKT1 and caspase-dependent regulation of Acn stability adjusts basal autophagy levels.
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Affiliation(s)
- Nilay Nandi
- Department of Neuroscience and Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Lauren K Tyra
- Department of Neuroscience and Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Drew Stenesen
- Department of Neuroscience and Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Helmut Krämer
- Department of Neuroscience and Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390 Department of Neuroscience and Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390
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Park HS, Seong KM, Kim JY, Kim CS, Yang KH, Jin YW, Nam SY. Chronic low-dose radiation inhibits the cells death by cytotoxic high-dose radiation increasing the level of AKT and acinus proteins via NF-κB activation. Int J Radiat Biol 2013. [DOI: 10.3109/09553002.2013.754560] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Seong KM, Kim CS, Lee BS, Nam SY, Yang KH, Kim JY, Park JJ, Min KJ, Jin YW. Low-dose radiation induces Drosophila innate immunity through Toll pathway activation. JOURNAL OF RADIATION RESEARCH 2012; 53:242-249. [PMID: 22374403 DOI: 10.1269/jrr.11170] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Numerous studies report that exposing certain organisms to low-dose radiation induces beneficial effects on lifespan, tumorigenesis, and immunity. By analyzing survival after bacterial infection and antimicrobial peptide gene expression in irradiated flies, we demonstrate that low-dose irradiation of Drosophila enhances innate immunity. Low-dose irradiation of flies significantly increased resistance against gram-positive and gram-negative bacterial infections, as well as expression of several antimicrobial peptide genes. Additionally, low-dose irradiation also resulted in a specific increase in expression of key proteins of the Toll signaling pathway and phosphorylated forms of p38 and JNK. These results indicate that innate immunity is activated after low-dose irradiation through Toll signaling pathway in Drosophila.
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Affiliation(s)
- Ki Moon Seong
- Division of Radiation Effect Research, Radiation Health Research Institute, Korea Hydro & Nuclear Power Co., Ltd., Seoul, Korea 132-703
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Gu Y, Fan S, Liu B, Zheng G, Yu Y, Ouyang Y, He Z. TCRP1 promotes radioresistance of oral squamous cell carcinoma cells via Akt signal pathway. Mol Cell Biochem 2011; 357:107-13. [PMID: 21603883 DOI: 10.1007/s11010-011-0880-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Accepted: 05/07/2011] [Indexed: 11/28/2022]
Abstract
Tongue cancer resistance-associated protein 1 (TCRP1) is a novel gene located on human chromosome 11q13.4 which has been reported as a candidate related to chemotherapeutic resistance to cisplatin. Results suggest that TCRP also contribute to radioresistance in oral squamous cell carcinoma (OSCC) cells. We previously established exogenous overexpression of TCRP1 cell line Tca8113/TCRP1 and TCRP1 knockdown cell line Tca8113/PYM-siRNA and paired control cell lines, which provides a cell model system to investigate the roles and mechanisms of TCRP1-mediated radioresponse in OSCC. In this study, we first compared the radiosensitivity of up/down-regulating expression of TCRP1 cell lines and paired control cell lines by a clonogenic survival assay, Hoechst 33258 staining, cell growth assay, and comet assay. The results indicated that TCRP1 played a significant role in mediating OSCC radioresistance through decreased cells apoptosis and increased cellular proliferation and long-term survival. The further study found that TCRP1 function by up-regulating Akt activity and levels and then elevating the level of NF-κB. In summary, these results provided strong evidence for the linkage between TCRP1 and radiation sensitivity and may provide theoretical base of TCRP1 as a potential molecular mark of estimating the response for irradiation in OSCC.
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Affiliation(s)
- Yixue Gu
- Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha 410078, Hunan, China
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Anandharaj A, Cinghu S, Kim WD, Yu JR, Park WY. Fused Toes Homolog modulates radiation cytotoxicity in uterine cervical cancer cells. Mol Biol Rep 2011; 38:5361-70. [PMID: 21424602 DOI: 10.1007/s11033-011-0688-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Accepted: 02/25/2011] [Indexed: 02/05/2023]
Abstract
Radiotherapy is the major treatment modality for uterine cervical cancer, but in some cases, the disease is radioresistant. Defining the molecular events that contribute to radioresistance and progression of cancer are of critical importance. Here we evaluated the role of Fused Toes Homolog (FTS) in radiation resistance of cervical carcinoma. Immunostaning of cervical cancer cells and tissues revealed that FTS localization and expression was changed after radiation. Targeted stable knockdown of FTS in HeLa cells led to the growth inhibition after radiation. Radiation induced AKT mediated cytoprotective effect was countered by FTS knockdown which leads to PARP cleavage and caspase-3 activation leading to cell death. FTS knockdown promotes radiation induced cell cycle arrest at G0/G1 and apoptosis of HeLa cells with concurrent alterations in the display of cell cycle regulatory proteins. This study revealed FTS is involved in radioresistance of cervical cancer. Targeted inhibition of FTS led to the shutdown of key elemental characteristics of cervical cancer and could lead to an effective therapeutic strategy.
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Affiliation(s)
- Arunkumar Anandharaj
- Department of Radiation Oncology, Chungbuk National University College of Medicine, Cheongju 361-763, Republic of Korea
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Gupta R, Rao Gogineni V, Nalla AK, Chetty C, Klopfenstein JD, Tsung AJ, Mohanam S, Rao JS. Oncogenic role of p53 is suppressed by si-RNA bicistronic construct of uPA, uPAR and cathepsin-B in meningiomas both in vitro and in vivo. Int J Oncol 2011; 38:973-83. [PMID: 21290090 DOI: 10.3892/ijo.2011.934] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Accepted: 12/01/2010] [Indexed: 02/02/2023] Open
Abstract
Meningiomas are the most commonly occurring intracranial tumors and account for approximately 15-20% of central nervous system tumors. Patients whose tumors recur after surgery and radiation therapy have limited therapeutic options. It has also been reported recently that radiation triggers DNA repair, cell survival and cell proliferation, and reduces apoptosis via the induction of cellular protective mechanisms. Earlier studies have reported that proteases such as uPA, uPAR and cathepsin B play important roles in tumor progression. In the present study, we attempted to determine the effectiveness of two bicistronic siRNA constructs pUC (uPAR/cathepsin B) and pU2 (uPA/uPAR) either alone or in combination with radiation, both in in vitro and in vivo models. Transfection of a plasmid vector expressing double-stranded RNA for uPA, uPAR and cathepsin B significantly induced the sub-G0-G1 cell population by the mitochondrial intrinsic apoptotic pathway. Results showed that pUC efficiently enhanced sub-G0-G1 phases compared to pU2 and was more effective. Interestingly, we observed that in IOMM-Lee cell lines, combined treatment of radiation with pUC and pU2 is more effective in comparison to SF-3061 and MN cell lines. We showed that apoptosis caused by these bicistronic constructs involves Bcl-2, Bcl-xL, p53 inactivation, cytochrome c release from mitochondria and caspase-9 activation, followed by the activation of caspase-3. We also determined that apoptosis caused by pUC and pU2 involves a mechanism which includes inactivation of p53 by its translocation from nucleus to cytoplasm as confirmed by immunofluorescence, which shows the oncogenic potential of p53 in meningiomas. However, the simultaneous RNAi-mediated targeting of uPAR and cathepsin B (pUC), in combination with irradiation, has greater potential application for the treatment of human meningioma in comparison to pU2 by decreasing p53 expression both in vitro and in vivo.
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Affiliation(s)
- Reshu Gupta
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, IL 61605 , USA
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Nam SY, Seo HH, Park HS, An S, Kim JY, Yang KH, Kim CS, Jeong M, Jin YW. Phosphorylation of CLK2 at serine 34 and threonine 127 by AKT controls cell survival after ionizing radiation. J Biol Chem 2010; 285:31157-63. [PMID: 20682768 DOI: 10.1074/jbc.m110.122044] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
AKT phosphorylates components of the intrinsic cell survival machinery and promotes survival to various stimuli. In the present study, we identified CDC-like kinase 2 (CLK2) as a new substrate of AKT activation and elucidated its role in cell survival to ionizing radiation. AKT directly binds to and phosphorylates CLK2 on serine 34 and threonine 127, in vitro and in vivo. CLK2 phosphorylation was detected in HeLa cells overexpressing active AKT. In addition, we demonstrated that ionizing radiation induces CLK2 phosphorylation via AKT activation. In contrast, the suppression of endogenous AKT expression by siRNA inhibited CLK2 phosphorylation in response to 2 gray of γ-ray or insulin. Furthermore, we examined the effect of CLK2 on the survival of irradiated CCD-18Lu cells overexpressing Myc-CLK2. CLK2 overexpression significantly increased cell growth and inhibited cell death induced by 2 gray. The role of CLK2 in cell survival to ionizing radiation was dependent on the phosphorylation of serine 34 and threonine 127. Our results suggest that AKT activation controls cell survival to ionizing radiation by phosphorylating CLK2, revealing an important regulatory mechanism required for promoting cell survival.
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Affiliation(s)
- Seon Young Nam
- Radiation Health Research Institute, Korea Hydro & Nuclear Power Co, Ltd, Seoul 132-703, Korea.
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Chiu SJ, Hsaio CH, Tseng HH, Su YH, Shih WL, Lee JW, Chuah JQY. Rosiglitazone enhances the radiosensitivity of p53-mutant HT-29 human colorectal cancer cells. Biochem Biophys Res Commun 2010; 394:774-9. [PMID: 20227390 DOI: 10.1016/j.bbrc.2010.03.068] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2010] [Accepted: 03/10/2010] [Indexed: 11/26/2022]
Abstract
Combined-modality treatment has improved the outcome in cases of various solid tumors, and radiosensitizers are used to enhance the radiotherapeutic efficiency. Rosiglitazone, a synthetic ligand of peroxisome proliferator-activated receptors gamma used in the treatment of type-2 diabetes, has been shown to reduce tumor growth and metastasis in human cancer cells, and may have the potential to be used as a radiosensitizer in radiotherapy for human colorectal cancer cells. In this study, rosiglitazone treatment significantly reduced the cell viability of p53-wild type HCT116 cells but not p53-mutant HT-29 cells. Interestingly, rosiglitazone pretreatment enhanced radiosensitivity in p53-mutant HT-29 cells but not HCT116 cells, and prolonged radiation-induced G(2)/M arrest and enhanced radiation-induced cell growth inhibition in HT-29 cells. Pretreatment with rosiglitazone also suppressed radiation-induced H2AX phosphorylation in response to DNA damage and AKT activation for cell survival; on the contrary, rosiglitazone pretreatment enhanced radiation-induced caspase-8, -9, and -3 activation and PARP cleavage in HT-29 cells. In addition, pretreatment with a pan-caspase inhibitor, zVAD-fmk, attenuated the levels of caspase-3 activation and PARP cleavage in radiation-exposed cancer cells in combination with rosiglitazone pretreatment. Our results provide proof for the first time that rosiglitazone suppresses radiation-induced survival signals and DNA damage response, and enhances the radiation-induced apoptosis signaling cascade. These findings can assist in the development of rosiglitazone as a novel radiosensitizer.
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Affiliation(s)
- Shu-Jun Chiu
- Department of Life Science, Tzu Chi University, Hualien, Taiwan.
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