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Kim YJ, Song J, Lee DH, Um SH, Bhang SH. Suppressing cancer by damaging cancer cell DNA using LED irradiation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2023; 243:112714. [PMID: 37084656 DOI: 10.1016/j.jphotobiol.2023.112714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 04/09/2023] [Accepted: 04/13/2023] [Indexed: 04/23/2023]
Abstract
BACKGROUND High-energy irradiation eliminates cancer cells by destroying their genetic components. However, there are several side effects from doing this, such as fatigue, dermatitis, and hair loss, which remain obstacles to this treatment. Here, we propose a moderate method that uses low-energy white light from a light-emitting diode (LED) to selectively inhibit cancer cell proliferation without affecting normal cells. METHODS The association between LED irradiation and cancer cell growth arrest was evaluated based on cell proliferation, viability, and apoptotic activity. Immunofluorescence, polymerase chain reaction, and western blotting were performed in vitro and in vivo to identify the metabolism related to the inhibition of HeLa cell proliferation. RESULTS LED irradiation aggravated the defective p53 signaling pathway and induced cell growth arrest in cancer cells. Consequently, cancer cell apoptosis was induced by the increased DNA damage. Additionally, LED irradiation inhibited the proliferation of cancer cells by suppressing the MAPK pathway. Furthermore, the suppression of cancer growth by the regulation of p53 and MAPK was observed in cancer-bearing mice irradiated with LED. CONCLUSIONS Our findings suggest that LED irradiation can suppress cancer cell activity and may contribute to preventing the proliferation of cancer cells after medical surgery without causing side effects.
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Affiliation(s)
- Yu-Jin Kim
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea; Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Jihun Song
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea; Department of Biomedical Sciences, Seoul National University Graduate School, Seoul, Republic of Korea
| | - Dong-Hyun Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Soong Ho Um
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Zhou X, Zhang W, Dou M, Li Z, Liu Z, Li J, Tian C, Yao Y, Wang C, Li Y, Chen P, Han X, Jiao D. 125I seeds inhibit proliferation and promote apoptosis in cholangiocarcinoma cells by regulating the AGR2-mediated p38 MAPK pathway. Cancer Lett 2022; 524:29-41. [PMID: 34656689 DOI: 10.1016/j.canlet.2021.10.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 09/22/2021] [Accepted: 10/11/2021] [Indexed: 11/29/2022]
Abstract
125I seeds can effectively inhibit the growth of a variety of cancer cells. It has been used in the treatment of a variety of cancers, and has achieved certain curative effect. However, to the best of our knowledge, no report has described the effects of 125I seeds on the biological functions of cholangiocarcinoma (CCA) and the mechanisms underlying the effects of the seeds on this cancer. In this study, we demonstrated that 125I seeds could inhibit the proliferation, migration and invasion of CCA cells, as well as promoting apoptosis and blocking the cell cycle in these cells. Moreover, 125I seeds inhibited the growth of CCA xenografts and promoted the apoptosis of CCA cells in vivo. Furthermore, transcriptome sequencing showed that 125I seeds could inhibit the growth of CCA by inhibiting the expression of AGR2 and regulating p38 MAPK pathway. Finally, this finding indicated that 125I seeds can inhibit proliferation and promote apoptosis in CCA cells by inhibiting the expression of AGR2 and DUSP1 and increasing the expression of p-p38 MAPK and p-p53. This study provides a new research direction for studies investigating the mechanisms underlying the effects of 125I seeds on CCA.
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Affiliation(s)
- Xueliang Zhou
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wenguang Zhang
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Mengmeng Dou
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhaonan Li
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zaoqu Liu
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jing Li
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chuan Tian
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yuan Yao
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chaoyan Wang
- Department of Magnetic Resonance, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yahua Li
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Pengfei Chen
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xinwei Han
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
| | - Dechao Jiao
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
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Computed tomography-guided implantation of 125I radioactive seeds in patients with malignant airway compression induced by advanced lung cancer: effectiveness and safety in 40 patients. J Contemp Brachytherapy 2020; 12:343-350. [PMID: 33293973 PMCID: PMC7690234 DOI: 10.5114/jcb.2020.98113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 07/03/2020] [Indexed: 12/19/2022] Open
Abstract
Purpose To evaluate the safety and efficacy of computed tomography (CT)-guided 125I radioactive seed implantation in patients with malignant airway compression induced by advanced lung cancer. Material and methods Between June 2015 and June 2018, 40 patients from three medical institutions with malignant airway compression induced by advanced lung cancer were treated with 125I seed implantation. The outcomes were measured in technical success and safety, objective response rate, complications, Karnofsky performance status (KPS) score, and survival time. Results All 40 patients successfully underwent implantation procedure. No procedure-associated death occurred. The most common complications were irritable cough, temporary hemoptysis, chest pain, fever, and pneumothorax, which occurred in 26 (65.0%), 31 (77.5%), 12 (30.0%), 15 (37.5%), and 11 (27.5%) patients, respectively. The objective response rates were 100%, 100%, 100%, 87.5%, and 83.3% at the 3rd, 6th, 12th, 24th, and 36th months post-procedure, respectively. The KPS score significantly improved at post-procedure. Median survival time was 25.1 months. Actuarial survival rates were 100%, 60%, and 15% at the 12th, 24th, and 36th months after the procedure, respectively. Conclusions For patients with malignant airway compression induced by advanced lung cancer, implantation with 125I seed is a safe and effective alternative treatment option.
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Study on the Low Velocity Stability of a Prostate Seed Implantation Robot’s Rotatory Joint. ELECTRONICS 2020. [DOI: 10.3390/electronics9020284] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Prostate cancer has one of the highest incidences of male malignant tumors worldwide. Its treatment involves the robotic implantation of radioactive seeds in the perineum, a safe and effective procedure for early, low-risk prostate cancer. In order to ensure precise positioning, the seed implantation needle is set at low terminal velocity. In this paper, the motion output position instability caused by the friction torque of the robot’s motor and rotating joint during low velocity motion was analyzed and studied. This paper also presents a compensation control method based on the LuGre friction model, which offers piecewise parameter identification with GA-PSO. First, based on an analysis of its structure and working principle, the friction torque model of the robotic system and the torque model of the driving motor are established, and the influence of friction torque on motion stability analyzed. Then, based on experimental data of the relationship between velocity and friction torque for no-friction compensation, the velocity point of the minimum torque of the rotating joint and the critical Stribeck velocity point were used for segmental parameter identification; cubic spline interpolation was used for segmental fitting. Furthermore, on the basis of the LuGre model identification method, parameter identification of the genetic algorithm-particle swarm optimization, and compensation control of the LuGre friction model, a control method is analysed and set forth. Malab2017a/Simulink simulation software was used to simulate and analyze the control method, and verify its feasibility. Finally, the cantilever prostate seed implantation robot system was tested to verify the effectiveness of the segmented identification method and the compensation control strategy. The results reveal that motion output position stability at low velocity meets the requirements of the cantilever prostate seed implantation robot, thus providing a vital reference for further research.
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Wang Z, Zhao Z, Lu J, Chen Z, Mao A, Teng G, Liu F. A comparison of the biological effects of 125I seeds continuous low-dose-rate radiation and 60Co high-dose-rate gamma radiation on non-small cell lung cancer cells. PLoS One 2015; 10:e0133728. [PMID: 26266801 PMCID: PMC4534329 DOI: 10.1371/journal.pone.0133728] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 07/01/2015] [Indexed: 11/30/2022] Open
Abstract
Objectives To compare the biological effects of 125I seeds continuous low-dose-rate (CLDR) radiation and 60Co γ-ray high-dose-rate (HDR) radiation on non-small cell lung cancer (NSCLC) cells. Materials and Methods A549, H1299 and BEAS-2B cells were exposed to 125I seeds CLDR radiation or 60Co γ-ray HDR radiation. The survival fraction was determined using a colony-forming assay. The cell cycle progression and apoptosis were detected by flow cytometry (FCM). The expression of the apoptosis-related proteins caspase-3, cleaved-caspase-3, PARP, cleaved-PARP, BAX and Bcl-2 were detected by western blot assay. Results After irradiation with 125I seeds CLDR radiation, there was a lower survival fraction, more pronounced cell cycle arrest (G1 arrest and G2/M arrest in A549 and H1299 cells, respectively) and a higher apoptotic ratio for A549 and H1299 cells than after 60Co γ-ray HDR radiation. Moreover, western blot assays revealed that 125I seeds CLDR radiation remarkably up-regulated the expression of Bax, cleaved-caspase-3 and cleaved-PARP proteins and down-regulated the expression of Bcl-2 proteins in A549 and H1299 cells compared with 60Co γ-ray HDR radiation. However, there was little change in the apoptotic ratio and expression of apoptosis-related proteins in normal BEAS-2B cells receiving the same treatment. Conclusions 125I seeds CLDR radiation led to remarkable growth inhibition of A549 and H1299 cells compared with 60Co HDR γ-ray radiation; A549 cells were the most sensitive to radiation, followed by H1299 cells. In contrast, normal BEAS-2B cells were relatively radio-resistant. The imbalance of the Bcl-2/Bax ratio and the activation of caspase-3 and PARP proteins might play a key role in the anti-proliferative effects induced by 125I seeds CLDR radiation, although other possibilities have not been excluded and will be investigated in future studies.
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Affiliation(s)
- Zhongmin Wang
- Institution of Molecular Imaging, Southeast University, Nanjing, China
- Department of Interventional Radiology, The Third Affiliated Hospital of the Medical College Shihezi University, Xinjiang, China
- Department of Radiology, Ruijin Hospital Luwan Branch, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhenzhen Zhao
- Department of Radiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Interventional Radiology, Shanghai St. Luke’s Hospital, Shanghai, China
| | - Jian Lu
- Department of Radiology, Ruijin Hospital Luwan Branch, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhijin Chen
- Department of Radiology, Ruijin Hospital Luwan Branch, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Aiwu Mao
- Department of Interventional Radiology, Shanghai St. Luke’s Hospital, Shanghai, China
| | - Gaojun Teng
- Institution of Molecular Imaging, Southeast University, Nanjing, China
- * E-mail:
| | - Fenju Liu
- Department of Radiobiology, School of Radiological Medicine and Protection, Soochow University, Suzhou, China
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Lu M, Pu D, Zhang W, Liao J, Zhang T, Yang G, Liu Z, Singh S, Gao F, Zhang F. Trans-bronchoscopy with implantation of 125I radioactive seeds in patients with pulmonary atelectasis induced by lung cancer. Oncol Lett 2015; 10:216-222. [PMID: 26171002 DOI: 10.3892/ol.2015.3204] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 04/14/2015] [Indexed: 12/19/2022] Open
Abstract
To evaluate the role of low-dose-rate interstitial brachytherapy using trans-bronchoscope 125I radioactive seeds implantation in patients with pulmonary atelectasis induced by lung cancer, in terms of feasibility, safety, quality of life (QOL), and survival time. Between April 2008 and June 2011, 15 patients from two medical institutions that had obstructive pulmonary atelectasis caused by inoperable lung cancer were assigned to receive 125I implantation endoluminal brachytherapy by bronchoscopy. Subsequent to the implantation of 125I seeds, the outcomes were measured in terms of procedure success rate, reopening of atelectasis, complications associated with the procedure, Karnofsky performance status (KPS) scores and survival time. The surgical procedure was successfully performed in all 15 patients. No procedure-associated mortality occurred and the complications were mild and considered acceptable. Irritable cough and temporary increase of hemoptysis occurred in 11 (73.3%) and 10 (66.7%) patients respectively, and were the most common complications. The pulmonary atelectasis reopening rate subsequent to the procedure was 86.7, 76.9, 80.0, 75.0 and 50.0% at 2, 6, 12, 18 and 24 months, respectively. The KPS score significantly improved following the implantation of 125I seeds and the duration of improvement ranged between 3 and 27 months. The median and mean survival times were 15.6 and 16 months, respectively. Actuarial survival rates at 6, 12 and 24 months after the procedure were 86.7, 66.7 and 13.3%, respectively. In patients with advanced lung cancer and those presenting with obstructive pulmonary atelectasis, treatment with intraluminal implantation of 125I seeds is a safe and effective therapy option with easy accessibility.
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Affiliation(s)
- Mingjian Lu
- Department of Medical Imaging & Interventional Radiology, Cancer Center and State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Deli Pu
- Department of Oncology, Guizhou Astronautics Hospital, Zunyi, Guizhou 563003, P.R. China
| | - Weidong Zhang
- Department of Medical Imaging & Interventional Radiology, Cancer Center and State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Jiangrong Liao
- Department of Oncology, Guizhou Astronautics Hospital, Zunyi, Guizhou 563003, P.R. China
| | - Tao Zhang
- Department of Medical Imaging & Interventional Radiology, Cancer Center and State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Guang Yang
- Department of Medical Imaging & Interventional Radiology, Cancer Center and State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Zhenyin Liu
- Department of Medical Imaging & Interventional Radiology, Cancer Center and State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Sristi Singh
- Department of Medical Imaging & Interventional Radiology, Cancer Center and State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Fei Gao
- Department of Medical Imaging & Interventional Radiology, Cancer Center and State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Fujun Zhang
- Department of Medical Imaging & Interventional Radiology, Cancer Center and State Key Laboratory of Oncology in South China, Sun Yat-sen University, Guangzhou, Guangdong 510060, P.R. China
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Tian Y, Xie Q, He J, Luo X, Zhou T, Liu Y, Huang Z, Tian Y, Sun D, Yao K. Radioactive (125)I seeds inhibit cell growth and epithelial-mesenchymal transition in human glioblastoma multiforme via a ROS-mediated signaling pathway. BMC Cancer 2015; 15:1. [PMID: 25971837 PMCID: PMC4429713 DOI: 10.1186/1471-2407-15-1] [Citation(s) in RCA: 129] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2013] [Accepted: 11/04/2014] [Indexed: 12/19/2022] Open
Abstract
Background Glioblastoma multiforme (GBM) is the most common primary central nervous system neoplasm in adults. Radioactive 125I seed implantation has been widely applied in the treatment of cancers. Moreover, previous clinical trials have confirmed that 125I seeds treatment was an effective therapy in GBM. We sought to investigate the effect of 125I seed on GBM cell growth and Epithelial-mesenchymal transition (EMT). Methods Cells were exposed to irradiation at different doses. Colony-formation assay, EdU assay, cell cycle analysis, and TUNEL assay were preformed to investigate the radiation sensitivity. The effects of 125I seeds irradiation on EMT were measured by transwell, Boyden and wound-healing assays. The levels of reactive oxygen species (ROS) were measured by DCF-DA assay. Moreover, the radiation sensitivity and EMT were investigated with or without pretreatment with glutathione. Additionally, nude mice with tumors were measured after treated with radiation. Results Radioactive 125I seeds are more effective than X-ray irradiation in inhibiting GBM cell growth. Moreover, EMT was effectively inhibited by 125I seed irradiation. A mechanism study indicated that GBM cell growth and EMT inhibition were induced by 125I seeds with the involvement of a ROS-mediated signaling pathway. Conclusions Radioactive 125I seeds exhibit novel anticancer activity via a ROS-mediated signaling pathway. These findings have clinical implications for the treatment of patients with GBM by 125I seeds.
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Affiliation(s)
- Yunhong Tian
- Cancer Research Institute, Southern Medical University, Guangzhou 510, 515, Guangdong Province, People's Republic of China. .,Department of Radiation Oncology, Cancer Center of Guangzhou Medical University, Guangzhou, Guangdong Province, People's Republic of China.
| | - Qiang Xie
- Department of Oncology, Armed Police Corps Hospital of Guangdong Province, Guangzhou, People's Republic of China.
| | - Jie He
- Cancer Research Institute, Southern Medical University, Guangzhou 510, 515, Guangdong Province, People's Republic of China.
| | - Xiaojun Luo
- Cancer Research Institute, Southern Medical University, Guangzhou 510, 515, Guangdong Province, People's Republic of China.
| | - Tao Zhou
- Department of Oncology, Armed Police Corps Hospital of Guangdong Province, Guangzhou, People's Republic of China.
| | - Ying Liu
- Department of Oncology, Armed Police Corps Hospital of Guangdong Province, Guangzhou, People's Republic of China.
| | - Zuoping Huang
- Department of Oncology, Armed Police Corps Hospital of Guangdong Province, Guangzhou, People's Republic of China.
| | - Yunming Tian
- Cancer Research Institute, Southern Medical University, Guangzhou 510, 515, Guangdong Province, People's Republic of China.
| | - Dan Sun
- Department of Oncology, Armed Police Corps Hospital of Guangdong Province, Guangzhou, People's Republic of China.
| | - Kaitai Yao
- Cancer Research Institute, Southern Medical University, Guangzhou 510, 515, Guangdong Province, People's Republic of China.
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Gan Z, Jing J, Zhu G, Qin Y, Teng G, Guo J. Preventive effects of ¹²⁵I seeds on benign restenosis following esophageal stent implantation in a dog model. Mol Med Rep 2014; 11:3382-90. [PMID: 25543838 PMCID: PMC4368074 DOI: 10.3892/mmr.2014.3130] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 11/25/2014] [Indexed: 12/14/2022] Open
Abstract
The present study aimed to evaluate the effects of iodine-125 (125I) seeds on the proliferation of primary esophageal fibroblasts in dogs, and to assess the safety and preventive efficacy of 125I seed-pre-loaded esophageal stents in benign restenosis following implantation. Primary fibroblasts were cultured with various 125I seed activities, which were then evaluated using cell proliferation and apoptosis assays as well as cell cycle analysis using Annexin V/propidium iodide (PI) double staining and PI staining. Prior to sacrification, animals were submitted to esophageal radiography under digital subtraction angiography. Esophageal tissues were collected and examined for macroscopic, microscopic and pathological alterations. The results demonstrated a significant and dose-dependent inhibition of fibroblast proliferation and increased apoptosis following exposure to 125I seeds. G0/G1 fibroblast populations increased in a dose-dependent manner following treatment with 125I seeds, in contrast to cells in S phase. Four weeks following implantation, α-smooth muscle actin and proliferating cell nuclear antigen expression levels in the experimental group were significantly lower compared with those in the control group; in addition, eight weeks following implantation, esophageal inner diameters were increased in the experimental group. 125I seeds inhibited proliferation of dog esophageal fibroblasts via cell cycle arrest and apoptosis. In conclusion, 125I seed-pre-loaded esophageal stents inhibited benign hyperplasia in the upper edge of the stent to a certain extent, which relieved benign restenosis following implantation with a good safety profile.
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Affiliation(s)
- Zhen Gan
- Department of Intervention and Vascular Surgery, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Jian Jing
- Department of Intervention and Vascular Surgery, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Guangyu Zhu
- Department of Intervention and Vascular Surgery, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Yonglin Qin
- Department of Intervention and Vascular Surgery, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Gaojun Teng
- Department of Intervention and Vascular Surgery, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Jinhe Guo
- Department of Intervention and Vascular Surgery, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
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Qu A, Wang H, Li J, Wang J, Liu J, Hou Y, Huang L, Zhao Y. Biological effects of (125)i seeds radiation on A549 lung cancer cells: G2/M arrest and enhanced cell death. Cancer Invest 2014; 32:209-17. [PMID: 24745612 DOI: 10.3109/07357907.2014.905585] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
External beam radiation (EBRT) and (125)I seeds continuous low dose rate radiation (CLDR) were used to treat patients with lung cancer. We herein investigated the biological effects of EBRT and CLDR on lung cancer cells. A549 human lung cancer cell line was thus exposed to different doses of EBRT and CLDR. CLDR was more efficient to inhibit cell growth than EBRT. CLDR induced increased DNA damage as evidenced by long-lasting p-H2AX activity. The enhanced inhibitory effects of CLDR on lung cancer cell growth may be, at least in part, due to the increased Bax/Bcl2 ratio and cyclin B1-mediated G2/M arrest.
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Affiliation(s)
- Ang Qu
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, P.R. China,1
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Tian Y, Xie Q, Tian Y, Liu Y, Huang Z, Fan C, Hou B, Sun D, Yao K, Chen T. Radioactive ¹²⁵I seed inhibits the cell growth, migration, and invasion of nasopharyngeal carcinoma by triggering DNA damage and inactivating VEGF-A/ERK signaling. PLoS One 2013; 8:e74038. [PMID: 24040157 PMCID: PMC3769370 DOI: 10.1371/journal.pone.0074038] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Accepted: 07/25/2013] [Indexed: 11/19/2022] Open
Abstract
Although radiotherapy technology has progressed rapidly in the past decade, the inefficiency of radiation and cancer cell resistance mean that the 5-year survival rate of patients with nasopharyngeal carcinoma (NPC) is low. Radioactive 125I seed implantation has received increasing attention as a clinical treatment for cancers. Vascular endothelial growth factor-A (VEGF-A) is one of the most important members of the VEGF family and plays an important role in cell migration through the extracellular-signal-regulated kinase (ERK) pathway. Here we show that radioactive 125I seeds more effectively inhibit NPC cell growth through DNA damage and subsequent induction of apoptosis, compared with X-ray irradiation. Moreover, cell migration was effectively inhibited by 125I seed irradiation through VEGF-A/ERK inactivation. VEGF-A pretreatment significantly blocked 125I seed irradiation-induced inhibition of cell migration by recovering the levels of phosphorylated ERK (p-ERK) protein. Interestingly, in vivo study results confirmed that 125I seed irradiation was more effective in inhibiting tumor growth than X-ray irradiation. Taken together, these results suggest that radioactive 125I seeds exert novel anticancer activity by triggering DNA damage and inactivating VEGF-A/ERK signaling. Our finding provides evidence for the efficacy of 125I seeds for treating NPC patients, especially those with local recurrence.
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Affiliation(s)
- Yunhong Tian
- Cancer Research Institute, Southern Medical University, Guangzhou, Guangdong Province, People’s Republic of China
- Department of Oncology, Armed Police Hospital of Guangdong Province, Guangzhou, Guangdong Province, People's Republic of China
| | - Qiang Xie
- Department of Oncology, Armed Police Hospital of Guangdong Province, Guangzhou, Guangdong Province, People's Republic of China
- Department of Pathology, Medical College of Jinan University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Yunming Tian
- State Key Laboratory Oncology in Southern China, Guangzhou, Guangdong Province, People’s Republic of China
- Department of Radiation Oncology, Cancer Center of Sun Yat-Sen University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Ying Liu
- Department of Oncology, Armed Police Hospital of Guangdong Province, Guangzhou, Guangdong Province, People's Republic of China
| | - Zuoping Huang
- Department of Oncology, Armed Police Hospital of Guangdong Province, Guangzhou, Guangdong Province, People's Republic of China
| | - Cundong Fan
- Department of Chemistry, Jinan University, Guangzhou, Guangdong Province, People’s Republic of China
| | - Bing Hou
- Department of Oncology, Armed Police Hospital of Guangdong Province, Guangzhou, Guangdong Province, People's Republic of China
| | - Dan Sun
- Department of Oncology, Armed Police Hospital of Guangdong Province, Guangzhou, Guangdong Province, People's Republic of China
| | - Kaitai Yao
- Cancer Research Institute, Southern Medical University, Guangzhou, Guangdong Province, People’s Republic of China
- * E-mail: (KY), (TC)
| | - Tianfeng Chen
- Department of Chemistry, Jinan University, Guangzhou, Guangdong Province, People’s Republic of China
- * E-mail: (KY), (TC)
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Wang H, Li J, Qu A, Liu J, Zhao Y, Wang J. The different biological effects of single, fractionated and continuous low dose rate irradiation on CL187 colorectal cancer cells. Radiat Oncol 2013; 8:196. [PMID: 23937791 PMCID: PMC3751200 DOI: 10.1186/1748-717x-8-196] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 08/07/2013] [Indexed: 12/02/2022] Open
Abstract
PURPOSE To determine the biological effectiveness of single, fractionated and continuous low dose rate irradiation on the human colorectal cancer cell line CL187 in vitro and explore the cellular mechanisms. MATERIALS AND METHODS The CL187 cells were exposed to radiation of 6 MV X-ray at a high dose rate of 4Gy/min and 125I seed at a low dose rate of 2.77 cGy/h. Three groups were employed: single dose radiation group (SDR), fractionated dose radiation group (FDR) by 2Gy/f and continuous low dose rate radiation group (CLDR). Four radiation doses 2, 4, 6 and 8Gy were chosen and cells without irradiation as the control. The responses of CL187 cells to distinct modes of radiation were evaluated by the colony-forming assay, cell cycle progression as well as apoptosis analysis. In addition, we detected the expression patterns of DNA-PKcs, Ku70 and Ku80 by Western blotting. RESULTS The relative biological effect for 125I seeds compared with 6 MV X-ray was 1.42. 48 hrs after 4Gy irradiation, the difference between proportions of cells at G2/M phase of SDR and CLDR groups were statistically significant (p = 0.026), so as the FDR and CLDR groups (p = 0.005). 48 hrs after 4Gy irradiation, the early apoptotic rate of CLDR group was remarkably higher than SDR and FDR groups (CLDR vs. SDR, p = 0.001; CLDR vs. FDR, p = 0.02), whereas the late apoptotic rate of CLDR group increased significantly compared with SDR and FDR group (CLDR vs. SDR, p = 0.004; CLDR vs. FDR, p = 0.007). Moreover, DNA-PKcs and Ku70 expression levels in CLDR-treated cells decreased compared with SDR and FDR groups. CONCLUSIONS Compared with the X-ray high dose rate irradiation, 125I seeds CLDR showed more effective induction of cell apoptosis and G2/M cell cycle arrest. Furthermore, 125I seeds CLDR could impair the DNA repair capability by down-regulating DNA-PKcs and Ku70 expression.
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Affiliation(s)
- Hao Wang
- Department of Radiation Oncology, Peking University Third Hospital, North Road No. 49, Haidian District, 100191, Beijing, China
| | - Jinna Li
- Department of Radiation Oncology, Peking University Third Hospital, North Road No. 49, Haidian District, 100191, Beijing, China
| | - Ang Qu
- Department of Radiation Oncology, Peking University Third Hospital, North Road No. 49, Haidian District, 100191, Beijing, China
| | - Jingjia Liu
- Department of Radiation Oncology, Peking University Third Hospital, North Road No. 49, Haidian District, 100191, Beijing, China
| | - Yong Zhao
- Transplantation Biology Research Division, State Key Laboratory of Biomembrane and Membrane Biotechnology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Junjie Wang
- Department of Radiation Oncology, Peking University Third Hospital, North Road No. 49, Haidian District, 100191, Beijing, China
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