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Liu X, Zhang H, Fan Y, Cai D, Lei R, Wang Q, Li Y, Shen L, Gu Y, Zhang Q, Qi Z, Wang Z. SNORA28 Promotes Proliferation and Radioresistance in Colorectal Cancer Cells through the STAT3 Pathway by Increasing H3K9 Acetylation in the LIFR Promoter. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2405332. [PMID: 38924373 DOI: 10.1002/advs.202405332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/14/2024] [Indexed: 06/28/2024]
Abstract
Radiotherapy is essential for treating colorectal cancer (CRC), especially in advanced rectal cancer. However, the low radiosensitivity of CRC cells greatly limits radiotherapy efficacy. Small nucleolar RNAs (snoRNAs) are a class of noncoding RNA that primarily direct post-transcriptional modifications of ribosomal RNAs (rRNAs), small nuclear RNAs (snRNAs), and other cellular RNAs. While snoRNAs are involved in tumor progression and chemoresistance, their association with radiosensitivity remains largely unknown. Herein, SNORA28 is shown highly expressed in CRC and is positively associated with poor prognosis. Furthermore, SNORA28 overexpression enhances the growth and radioresistance of CRC cells in vitro and in vivo. Mechanistically, SNORA28 acts as a molecular decoy that recruits bromodomain-containing protein 4 (BRD4), which increases the level of H3K9 acetylation at the LIFR promoter region. This stimulates LIFR transcription, which in turn triggers the JAK1/STAT3 pathway, enhancing the proliferation and radioresistance of CRC cells. Overall, these results highlight the ability of snoRNAs to regulate radiosensitivity in tumor cells and affect histone acetylation modification in the promoter region of target genes, thus broadening the current knowledge of snoRNA biological functions and the mechanism underlying target gene regulation.
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Affiliation(s)
- Xin Liu
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Hong Zhang
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Ying Fan
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Dan Cai
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, China
- Graduate Collaborative Training Base of Academy of Military Sciences, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Ridan Lei
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, Hunan, 410078, China
| | - Qi Wang
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Yaqiong Li
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Liping Shen
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Yongqing Gu
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Qingtong Zhang
- Department of Colorectal Surgery, Liaoning Cancer Hospital & Institute, Cancer Hospital of China Medical University, Cancer Hospital of Dalian University of Technology, Shenyang, 110042, China
| | - Zhenhua Qi
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Zhidong Wang
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, 100850, China
- Graduate Collaborative Training Base of Academy of Military Sciences, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
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Zhang C, Yang Y, Qin D, Hu R, Hu L. Silver nanocluster-based ratiometric fluorescence sensors for X-ray dose detection. Talanta 2024; 271:125631. [PMID: 38241924 DOI: 10.1016/j.talanta.2024.125631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/28/2023] [Accepted: 01/04/2024] [Indexed: 01/21/2024]
Abstract
In this paper, we synthesized silver nanoclusters using bovine serum albumin (BSA) as a template (BSA@AgNCs). Then, we anchored hydroxyphenyl fluorescein (HPF) to yield HPF-BSA@AgNCs. When exposed to X-rays, hydroxyl (∙OH) radicals generated by radiolysis of water react with HPF to produce fluorescein, which emits enhanced fluorescence at 515 nm (λex = 480 nm). The fluorescence intensity of BSA@AgNCs at 685 nm (λex = 480 nm) remains stable when exposed to X-rays. This HPF-BSA@AgNCs ratiometric fluorescence sensor can rapidly detect 0.1-20 Gy (the energy deposited per unit mass, J/kg) of X-rays. In addition, HPF-BSA@AgNCs exhibit good durability and temperature stability. Finally, HPF-BSA@AgNCs were used to measure the absorbed doses of A549 cells and evaluate the cell irradiation damage.
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Affiliation(s)
- Chengfang Zhang
- State Key Laboratory of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, and School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, China
| | - Yuanyuan Yang
- Department of Oncology, Dushu Lake Hospital Affiliated to Soochow University, Suzhou, China
| | - Danni Qin
- State Key Laboratory of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, and School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, China
| | - Rui Hu
- Department of Radiation Oncology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, China.
| | - Liang Hu
- State Key Laboratory of Radiation Medicine and Protection, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, and School for Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, China.
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Téllez T, Martin-García D, Redondo M, García-Aranda M. Clusterin Expression in Colorectal Carcinomas. Int J Mol Sci 2023; 24:14641. [PMID: 37834086 PMCID: PMC10572822 DOI: 10.3390/ijms241914641] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/25/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
Colorectal cancer is the third most diagnosed cancer, behind only breast and lung cancer. In terms of overall mortality, it ranks second due to, among other factors, problems with screening programs, which means that one of the factors that directly impacts survival and treatment success is early detection of the disease. Clusterin (CLU) is a molecular chaperone that has been linked to tumorigenesis, cancer progression and resistance to anticancer treatments, which has made it a promising drug target. However, it is still necessary to continue this line of research and to adjust the situations in which its use is more favorable. The aim of this paper is to review the current genetic knowledge on the role of CLU in tumorigenesis and cancer progression in general, and discuss its possible use as a therapeutic target in colorectal cancer.
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Affiliation(s)
- Teresa Téllez
- Surgical Specialties, Biochemistry and Immunology Department, Faculty of Medicine, University of Málaga, 29010 Malaga, Spain; (T.T.); (D.M.-G.)
- Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Red de Investigación en Cronicidad, Atención Primaria y Promoción de la Salud (RICAPPS), Instituto de Investigación Biomédica de Málaga (IBIMA), 29590 Malaga, Spain;
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina—IBIMA Plataforma BIONAND, 29590 Malaga, Spain
| | - Desirée Martin-García
- Surgical Specialties, Biochemistry and Immunology Department, Faculty of Medicine, University of Málaga, 29010 Malaga, Spain; (T.T.); (D.M.-G.)
- Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Red de Investigación en Cronicidad, Atención Primaria y Promoción de la Salud (RICAPPS), Instituto de Investigación Biomédica de Málaga (IBIMA), 29590 Malaga, Spain;
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina—IBIMA Plataforma BIONAND, 29590 Malaga, Spain
- Research and Innovation Unit, Hospital Costa del Sol, 29602 Marbella, Spain
| | - Maximino Redondo
- Surgical Specialties, Biochemistry and Immunology Department, Faculty of Medicine, University of Málaga, 29010 Malaga, Spain; (T.T.); (D.M.-G.)
- Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Red de Investigación en Cronicidad, Atención Primaria y Promoción de la Salud (RICAPPS), Instituto de Investigación Biomédica de Málaga (IBIMA), 29590 Malaga, Spain;
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina—IBIMA Plataforma BIONAND, 29590 Malaga, Spain
- Research and Innovation Unit, Hospital Costa del Sol, 29602 Marbella, Spain
| | - Marilina García-Aranda
- Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Red de Investigación en Cronicidad, Atención Primaria y Promoción de la Salud (RICAPPS), Instituto de Investigación Biomédica de Málaga (IBIMA), 29590 Malaga, Spain;
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina—IBIMA Plataforma BIONAND, 29590 Malaga, Spain
- Research and Innovation Unit, Hospital Costa del Sol, 29602 Marbella, Spain
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Tan G, Lin C, Huang C, Chen B, Chen J, Shi Y, Zhi F. Radiosensitivity of colorectal cancer and radiation-induced gut damages are regulated by gasdermin E. Cancer Lett 2021; 529:1-10. [PMID: 34979164 DOI: 10.1016/j.canlet.2021.12.034] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 12/22/2021] [Accepted: 12/28/2021] [Indexed: 11/29/2022]
Abstract
Although radiotherapy is an important clinical option available for colorectal cancer (CRC), its use is restricted due to low radiosensitivity of CRC and high toxicity to surrounding normal tissues. The purpose of this study is to investigate the molecular mechanism by which CRC is not sensitive to radiation and radiation causes toxicity to surrounding normal tissues. Here we found that GSDME was silenced in CRC but markedly expressed in their surrounding normal tissues. GSDME determines radiation-induced pyroptosis in CRC cells and normal epithelial cells through the caspase-3-dependent pathway. GSDME expression sensitizes radioresistant CRC cells to radiation. In the homograft model, after radiation treatment, the tumor volume and weight were significantly decreased in GSDME-expressed homograft tumors compared to GSDME-knockout homograft tumors. On the mechanism, radiation induced GSDME-mediated pyroptosis in CRC cells, which recruited and activated NK cells to enhance antitumor immunity. In addition, GSDME-knockout mice were protected from radiation-induced weight loss and tissue damages in the intestine, stomach, liver and pancreas compared to wild-type control littermates. In summary, we show that GSDME determines CRC radiosensitivity and radiation-related toxicity to surrounding normal tissues through caspase-3-dependent pyroptosis. Our finding reveals a previously unrecognized link between radiation and pyroptosis.
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Affiliation(s)
- Gao Tan
- Guangdong Provincial Key Laboratory of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Chunjing Lin
- Guangdong Provincial Key Laboratory of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Chongyang Huang
- Guangdong Provincial Key Laboratory of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Bingxia Chen
- Guangdong Provincial Key Laboratory of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jiaye Chen
- Guangdong Provincial Key Laboratory of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yanqiang Shi
- Guangdong Provincial Key Laboratory of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Fachao Zhi
- Guangdong Provincial Key Laboratory of Gastroenterology, Institute of Gastroenterology of Guangdong Province, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
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Antitumor efficiency of contact radiotherapy in combination with a chlorin-based photosensitizer in experiment. BIOMEDICAL PHOTONICS 2021. [DOI: 10.24931/2413-9432-2021-10-2-25-33] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Authors have studied the antitumor efficacy of contact radiation therapy (CRT) in combination with a chlorin-based photosensitizer (PS) in an experiment on laboratory animals with transplanted tumors. The experimental study was performed in 50 white outbred rats weighing 250±50 g. Subcutaneously transplanted Pliss lymphosarcoma (PLS) and alveolar liver cancer RS1 (RS1) were used as tumor models. Chlorinbased PS photolon (RUE «Belmedpreparaty», Republic Belarus) was injected intravenously at a dose of 2.5 mg/kg. The radiation sessions were carried out 2.5–4 hours (depending on the tumor model) after the administration of the PS using the device «microSelectron HDR V3 Digital» («Nucletron», Netherlands) with a 192-Ir radiation source in single focal doses 5 and 10 Gy. All laboratory animals (for PLS and RS1) were subdivided into 5 groups of 5 animals each: intact control, CRT 5 Gy, CRT 10 Gy, PS + CRT 5 Gy, PS + CRT 10 Gy. For the PLS tumor model – on the 14th day from the beginning of the experiment Vav. in groups were 26.31±5.81; 22.45±6.97; 18.99±4.86; 10.75±5.18 and 28.06±2.85 cm3, respectively (p˂0.05). The coefficients of tumor growth inhibition in the experimental groups were 14.67%, 27.82%, 59.14% and 6.65%, respectively. The frequency of complete tumor regressions 60 days after the start of the experiment was 0%, 20%, 20%, 60%, and 20%, respectively. On RS1 tumor model – on the 14th day from the beginning of the experiment Vav. in groups were 4.48±1.03; 0.80±0.21; 0.29±0.09; 0.19±0.07 and 0.32±0.08 cm3, respectively (p=0.009). The coefficients of tumor growth inhibition in the experimental groups were 82.14%, 93.53%, 95.76% and 92.86%, respectively. The frequency of complete tumor regressions 60 days after the start of the experiment was 0%, 0%, 20%, 0%, and 0%, respectively. Systemic administration of chlorin-based PS before the CRT session increases the antitumor efficacy of radiation therapy in animals with transplantable tumors of different histological structure and growth patterns. The data obtained indicate that further studies of the radiosensitizing properties of PS are promising.
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Nordmann NJ, Michael AP. 5-Aminolevulinic acid radiodynamic therapy for treatment of high-grade gliomas: A systematic review. Clin Neurol Neurosurg 2020; 201:106430. [PMID: 33360951 DOI: 10.1016/j.clineuro.2020.106430] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/09/2020] [Accepted: 12/10/2020] [Indexed: 01/22/2023]
Abstract
INTRODUCTION Radiodynamic therapy (RDT) involves administration of a radiosensitizing agent and its subsequent activation by ionizing radiation for destruction of neoplastic cells. MATERIALS AND METHODS A comprehensive evaluation of the literature was performed to review the history of RDT using porphyrins for solid tumors, the cellular mechanisms of action, immunomodulatory effects, and both preclinical and clinical studies for use in high-grade gliomas (HGGs). This manuscript was prepared in accordance with the PRISMA guidelines. RESULTS A total of 271 articles were considered for initial review. After removal of duplicates, articles not unrelated to specific topic, and exclusion of commentary articles, a total of 11 articles were subject to full analysis that included in vivo, in vitro, and human studies. Porphyrins such as 5-aminolevulinic acid (5-ALA)-induced protoporphyrin IX (PpIX) selectively accumulate in neoplastic cells and are currently used for fluorescent-guided surgical resection and photodynamic therapy (PDT) of HGG and other brain tumors. 5-ALA is also shown to act as a radiosensitizer by increasing oxidative stress in neoplastic cell mitochondria and enhancing the host immune response. Postoperative radiation therapy is currently the standard of care for treatment of HGG. CONCLUSION RDT remains a promising adjuvant therapy for HGGs and requires further investigation. Clinical trials of 5-ALA RDT for HGG are needed to evaluate the optimum timing, dosing and effectiveness.
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Affiliation(s)
- Nathan J Nordmann
- Division of Neurosurgery, Neuroscience Institute, Southern Illinois University School of Medicine. P.O. Box 19638, Springfield, IL, 62794-9638, United States
| | - Alex P Michael
- Division of Neurosurgery, Neuroscience Institute, Southern Illinois University School of Medicine. P.O. Box 19638, Springfield, IL, 62794-9638, United States.
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Yamamoto J, Kitagawa T, Miyaoka R, Suzuki K, Takamatsu S, Saito T, Nakano Y. 5-Aminolevulinic Acid: Pitfalls of Fluorescence-guided Resection for Malignant Gliomas and Application for Malignant Glioma Therapy. J UOEH 2020; 42:27-34. [PMID: 32213740 DOI: 10.7888/juoeh.42.27] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
5-Aminolevulinic acid (ALA) has been widely used as an intravital fluorescence marker in the fluorescence-guided resection of malignant gliomas. Although not a photosensitizer itself, 5-ALA is a prodrug that accumulates protoporphyrin IX (PpIX) in the mitochondria of glioma cells; PpIX acts as a photosensitizer. Fluorescence-guided resection for malignant gliomas has some pitfalls. Moreover, 5-ALA is not merely a fluorescence marker but has potential as a mitochondria-targeting drug for malignant glioma therapy. In this article, we review the literature related to 5-ALA, discuss the pitfalls of fluorescence-guided resection using 5-ALA for malignant gliomas, and describe the application of 5-ALA for malignant glioma therapy with personal opinions.
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Affiliation(s)
- Junkoh Yamamoto
- Department of Neurosurgery, University of Occupational and Environmental Health, Japan
| | - Takehiro Kitagawa
- Department of Neurosurgery, University of Occupational and Environmental Health, Japan
| | - Ryo Miyaoka
- Department of Neurosurgery, University of Occupational and Environmental Health, Japan
| | - Kohei Suzuki
- Department of Neurosurgery, University of Occupational and Environmental Health, Japan
| | - Seishiro Takamatsu
- Department of Neurosurgery, University of Occupational and Environmental Health, Japan
| | - Takeshi Saito
- Department of Neurosurgery, University of Occupational and Environmental Health, Japan
| | - Yoshiteru Nakano
- Department of Neurosurgery, University of Occupational and Environmental Health, Japan
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Yang M, Yang T, Mao C. Enhancement of Photodynamic Cancer Therapy by Physical and Chemical Factors. Angew Chem Int Ed Engl 2019; 58:14066-14080. [PMID: 30663185 PMCID: PMC6800243 DOI: 10.1002/anie.201814098] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Indexed: 12/25/2022]
Abstract
The viable use of photodynamic therapy (PDT) in cancer therapy has never been fully realized because of its undesirable effects on healthy tissues. Herein we summarize some physicochemical factors that can make PDT a more viable and effective option to provide future oncological patients with better-quality treatment options. These physicochemical factors include light sources, photosensitizer (PS) carriers, microwaves, electric fields, magnetic fields, and ultrasound. This Review is meant to provide current information pertaining to PDT use, including a discussion of in vitro and in vivo studies. Emphasis is placed on the physicochemical factors and their potential benefits in overcoming the difficulty in transitioning PDT into the medical field. Many advanced techniques, such as employing X-rays as a light source, using nanoparticle-loaded stem cells and bacteriophage bio-nanowires as a photosensitizer carrier, as well as integration with immunotherapy, are among the future directions.
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Affiliation(s)
- Mingying Yang
- College of Animal Science, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Tao Yang
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Chuanbin Mao
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
- Department of Chemistry & Biochemistry, Stephenson Life Science Research Center, Institute for Biomedical Engineering, Science and Technology, University of Oklahoma, 101 Stephenson Parkway, Norman, OK, 73019, USA
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Zhao J, Duan L, Wang A, Fei J, Li J. Insight into the efficiency of oxygen introduced photodynamic therapy (PDT) and deep PDT against cancers with various assembled nanocarriers. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2019; 12:e1583. [PMID: 31566931 DOI: 10.1002/wnan.1583] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/18/2019] [Accepted: 07/24/2019] [Indexed: 12/14/2022]
Abstract
Photodynamic therapy (PDT) has been used in the treatment of cancers and other benign diseases for several years in clinic. However, the hypoxia of tumors and the penetration limitation of excitation light to tissues can dramatically reduce the efficacy of PDT to cancers. To overcome these drawbacks, various assembled nanocarriers such as nanoparticles, nanocapsules, nanocrystals, and so on were introduced. The assembled nanocarriers have the ability of loading photosensitizers, delivering O2 into tumors, generating O2 in situ in tumors, as well as turning near-infrared (NIR) light, X-rays, and chemical energy into ultraviolet or visible light. Therefore, it is easy for the nanocarriers to improve the hypoxia microenvironment or increase the treatment depth of cancers, which will improve the efficiency of PDT to some degree. In recent years, a number of investigations were focused on these subjects. We will summarize the advances of nanocarriers in PDT, especially in O2 introduction PDT and deep PDT. The perspectives, challenges, and potential in translation of PDT will also be discussed. This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies Biology-Inspired Nanomaterials > Lipid-Based Structures Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease.
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Affiliation(s)
- Jie Zhao
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab for Colloid, Interface, and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Li Duan
- Northwest Institute of Nuclear Technology, Xi'an, Shanxi, China
| | - Anhe Wang
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
| | - Jinbo Fei
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab for Colloid, Interface, and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Junbai Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab for Colloid, Interface, and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
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Yang M, Yang T, Mao C. Optimierung photodynamischer Krebstherapien auf der Grundlage physikalisch‐chemischer Faktoren. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814098] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Mingying Yang
- College of Animal Science Zhejiang University Hangzhou Zhejiang 310058 China
| | - Tao Yang
- School of Materials Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
| | - Chuanbin Mao
- Department of Chemistry & Biochemistry, Stephenson Life Science Research Center Institute for Biomedical Engineering, Science and Technology University of Oklahoma 101 Stephenson Parkway Norman OK 73019 USA
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Yamada K, Murayama Y, Kamada Y, Arita T, Kosuga T, Konishi H, Morimura R, Shiozaki A, Kuriu Y, Ikoma H, Kubota T, Nakanishi M, Fujiwara H, Okamoto K, Otsuji E. Radiosensitizing effect of 5-aminolevulinic acid in colorectal cancer in vitro and in vivo. Oncol Lett 2019; 17:5132-5138. [PMID: 31186727 PMCID: PMC6507316 DOI: 10.3892/ol.2019.10198] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 03/06/2019] [Indexed: 12/18/2022] Open
Abstract
The radiosensitizing effect of 5-aminolevulinic acid (5-ALA) has been demonstrated in glioma and melanoma in a number of studies. Enhancing the radiosensitivity of colorectal cancer may improve survival rates and lessen adverse effects. The present study assessed the radiosensitizing effect of 5-ALA in colorectal cancer using the human colon cancer cell line HT29 in vitro and in vivo. In vitro, cells were pretreated with 5-ALA and exposed to ionizing radiation. Cells pretreated with or without 5-ALA were compared using a colony formation assay. In vivo, HT29 cells were implanted into mice subcutaneously and subsequently exposed to ionizing radiation. 5-ALA was administrated by intraperitoneal injection. Subcutaneous tumors treated with or without 5-ALA were compared. Single-dose and multi-dose irradiations were applied both in vitro and in vivo. Cells exposed to multi-dose irradiation and pretreated with 5-ALA in vitro had a significantly lower surviving fraction compared with cells without 5-ALA pretreatment. Following multi-dose irradiation in vivo, the volume of the subcutaneous tumors treated with 5-ALA was significantly lower compared with that of tumors without treatment. These results suggest that radiotherapy with 5-ALA may enhance the therapeutic effect in colon cancer.
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Affiliation(s)
- Kazuto Yamada
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Yasutoshi Murayama
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Yosuke Kamada
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Tomohiro Arita
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Toshiyuki Kosuga
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Hirotaka Konishi
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Ryo Morimura
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Atsushi Shiozaki
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Yoshiaki Kuriu
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Hisashi Ikoma
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Takeshi Kubota
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Masayoshi Nakanishi
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Hitoshi Fujiwara
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Kazuma Okamoto
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Eigo Otsuji
- Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
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12
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Larue L, Ben Mihoub A, Youssef Z, Colombeau L, Acherar S, André JC, Arnoux P, Baros F, Vermandel M, Frochot C. Using X-rays in photodynamic therapy: an overview. Photochem Photobiol Sci 2018; 17:1612-1650. [DOI: 10.1039/c8pp00112j] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Photodynamic therapy is a therapeutic option to treat cancer and other diseases.
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13
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Bhattacharyya A, Jameei A, Garai A, Saha R, Karande AA, Chakravarty AR. Mitochondria-localizing BODIPY–copper(ii) conjugates for cellular imaging and photo-activated cytotoxicity forming singlet oxygen. Dalton Trans 2018; 47:5019-5030. [DOI: 10.1039/c8dt00255j] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BODIPY–copper(ii) conjugates are prepared and characterized and the complexes showed mitochondrial localization with singlet oxygen mediated visible light-induced apoptotic cell death.
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Affiliation(s)
- Arnab Bhattacharyya
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Aida Jameei
- Department of Biochemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Aditya Garai
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Rupak Saha
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Anjali A. Karande
- Department of Biochemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Akhil R. Chakravarty
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
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14
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Chouikrat R, Baros F, André JC, Vanderesse R, Viana B, Bulin AL, Dujardin C, Arnoux P, Verelst M, Frochot C. A Photosensitizer Lanthanide Nanoparticle Formulation that Induces Singlet Oxygen with Direct Light Excitation, But Not By Photon or X-ray Energy Transfer. Photochem Photobiol 2017; 93:1439-1448. [DOI: 10.1111/php.12799] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 05/04/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Rima Chouikrat
- Laboratoire Réactions et Génie des Procédés (LRGP); UMR 7274; Université de Lorraine; Nancy France
- Laboratoire Réactions et Génie des Procédés (LRGP); UMR 7274; CNRS; Nancy France
- UPR 8011; CNRS, Centre d'Elaboration de Matériaux et d'Etudes Structurales; Université de Toulouse (CEMES); Toulouse France
| | - Francis Baros
- Laboratoire Réactions et Génie des Procédés (LRGP); UMR 7274; Université de Lorraine; Nancy France
- Laboratoire Réactions et Génie des Procédés (LRGP); UMR 7274; CNRS; Nancy France
| | - Jean-Claude André
- Laboratoire Réactions et Génie des Procédés (LRGP); UMR 7274; Université de Lorraine; Nancy France
- Laboratoire Réactions et Génie des Procédés (LRGP); UMR 7274; CNRS; Nancy France
| | - Régis Vanderesse
- Laboratoire de Chimie Physique Macromoléculaire (LCPM); UMR CNRS 7375; Université de Lorraine; Nancy France
- Laboratoire de Chimie Physique Macromoléculaire (LCPM), UMR CNRS 7375; CNRS; Nancy France
| | | | - Anne-Laure Bulin
- Institut Lumière Matière; UMR5306; Université Lyon 1-CNRS; Villeurbanne France
| | - Christophe Dujardin
- Institut Lumière Matière; UMR5306; Université Lyon 1-CNRS; Villeurbanne France
| | - Philippe Arnoux
- Laboratoire Réactions et Génie des Procédés (LRGP); UMR 7274; Université de Lorraine; Nancy France
- Laboratoire Réactions et Génie des Procédés (LRGP); UMR 7274; CNRS; Nancy France
| | - Marc Verelst
- UPR 8011; CNRS, Centre d'Elaboration de Matériaux et d'Etudes Structurales; Université de Toulouse (CEMES); Toulouse France
| | - Céline Frochot
- Laboratoire Réactions et Génie des Procédés (LRGP); UMR 7274; Université de Lorraine; Nancy France
- Laboratoire Réactions et Génie des Procédés (LRGP); UMR 7274; CNRS; Nancy France
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15
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Ueta K, Yamamoto J, Tanaka T, Nakano Y, Kitagawa T, Nishizawa S. 5-Aminolevulinic acid enhances mitochondrial stress upon ionizing irradiation exposure and increases delayed production of reactive oxygen species and cell death in glioma cells. Int J Mol Med 2016; 39:387-398. [DOI: 10.3892/ijmm.2016.2841] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 12/06/2016] [Indexed: 11/06/2022] Open
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16
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Fan W, Bu W, Shi J. On The Latest Three-Stage Development of Nanomedicines based on Upconversion Nanoparticles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:3987-4011. [PMID: 27031300 DOI: 10.1002/adma.201505678] [Citation(s) in RCA: 165] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 01/25/2016] [Indexed: 06/05/2023]
Abstract
Following the "detect-to-treat" strategy, by biological engineering, the emerging upconversion nanoparticles (UCNPs) have become one of the most promising inorganic nanomedicines, and their biomedical applications have gradually shifted from multimodal tumor imaging to highly efficient cancer therapy. The past few years have witnessed a three-stage development of UCNP-based nanomedicines. On one hand, UCNPs can optimize each clinical treatment tool (chemotherapy, photodynamic therapy (PDT), radiotherapy (RT)) by controlled drug delivery/release, near-infrared (NIR)-excited deep PDT, and radiosensitization, respectively, all of which contribute greatly to the optimized treatment efficacy along with minimized side effects. On the other hand, several individual treatments can be "smartly" integrated into a single UCNP-based nanotheranostic system for multimodal synergetic therapy, which can further improve the overall therapeutic effectiveness. Especially, UCNPs provide more-effective strategies for overcoming tumor hypoxia, thus leading to an ideal treatment efficacy for complete eradication of solid tumors. Finally, the critical issues regarding the future development of UCNPs are discussed to promote the clinic-translational applications of UCNP-based nanomedicines, as well as realization of our "one drug fits all" dream.
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Affiliation(s)
- Wenpei Fan
- State Key Laboratory of High performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, MD, 20892, USA
| | - Wenbo Bu
- State Key Laboratory of High performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, P. R. China
| | - Jianlin Shi
- State Key Laboratory of High performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
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17
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Yilmaz G, Guler E, Barlas FB, Timur S, Yagci Y. Polymeric Thioxanthones as Potential Anticancer and Radiotherapy Agents. Macromol Rapid Commun 2016; 37:1046-51. [DOI: 10.1002/marc.201600189] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2016] [Revised: 04/20/2016] [Indexed: 12/17/2022]
Affiliation(s)
- Gorkem Yilmaz
- Department of Chemistry; Faculty of Science and Letters; Istanbul Technical University; 34469 Istanbul Turkey
| | - Emine Guler
- Biochemistry Department; Faculty of Science Ege University; 35100 Bornova, Izmir Turkey
- Institute of Drug Abuse Toxicology and Pharmaceutical Sciences; Ege University; 35100 Bornova, Izmir Turkey
| | - Firat Baris Barlas
- Biochemistry Department; Faculty of Science Ege University; 35100 Bornova, Izmir Turkey
| | - Suna Timur
- Biochemistry Department; Faculty of Science Ege University; 35100 Bornova, Izmir Turkey
- Institute of Drug Abuse Toxicology and Pharmaceutical Sciences; Ege University; 35100 Bornova, Izmir Turkey
| | - Yusuf Yagci
- Department of Chemistry; Faculty of Science and Letters; Istanbul Technical University; 34469 Istanbul Turkey
- Chemistry Department Faculty of Science; King Abdulaziz University; 21589 Jeddah Saudi Arabia
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18
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Chen HP, Tung FI, Chen MH, Liu TY. A magnetic vehicle realized tumor cell-targeted radiotherapy using low-dose radiation. J Control Release 2016; 226:182-92. [PMID: 26892750 DOI: 10.1016/j.jconrel.2016.02.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 01/18/2016] [Accepted: 02/13/2016] [Indexed: 12/19/2022]
Abstract
Radiotherapy, a common cancer treatment, often adversely affects the surrounding healthy tissue and/or cells. Some tumor tissue-focused radiation therapies have been developed to lower radiation-induced lesion formation; however, achieving tumor cell-targeted radiotherapy (i.e., precisely focusing the radiation efficacy to tumor cells) remains a challenge. In the present study, we developed a novel tumor cell-targeted radiotherapy, named targeted sensitization-enhanced radiotherapy (TSER), that exploits tumor-specific folic acid-conjugated carboxymethyl lauryl chitosan/superparamagnetic iron oxide (FA-CLC/SPIO) micelles to effectively deliver chlorin e6 (Ce6, a sonosensitizer) to mitochondria of HeLa cells under magnetic guidance. For the in vitro tests, the sensitization of Ce6 induced by ultrasound, that could weaken the radiation resistant ability of tumor cells, occurred only in Ce6-internalizing tumor cells. Therefore, low-dose X-ray irradiation, that was not harmful to normal cells, could exert high tumor cell-specific killing ability. The ratio of viable normal cells to tumor cells was increased considerably, from 7.8 (at 24h) to 97.1 (at 72h), after they had received TSER treatment. Our data suggest that TSER treatment significantly weakens tumor cells, resulting in decreased viability in vitro as well as decreased in vivo subcutaneous tumor growth in nude mice, while the adverse effects were minimal. Taken together, TSER treatment appears to be an effective, clinically feasible tumor cell-targeted radiotherapy that can solve the problems of traditional radiotherapy and photodynamic therapy.
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Affiliation(s)
- Hsiao-Ping Chen
- Institute of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Fu-I Tung
- Department of Orthopaedic Surgery, Taipei City Hospital, Taipei, Taiwan, ROC
| | - Ming-Hong Chen
- Division of Neurosurgery, Department of Surgery, Cathay General Hospital, Taipei, Taiwan, ROC; School of Medicine, Fu Jen Catholic University, Taipei, Taiwan, ROC
| | - Tse-Ying Liu
- Institute of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan, ROC; Biophotonics & Molecular Imaging Research Center (BMIRC), National Yang-Ming University, Taipei, Taiwan, ROC.
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19
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Fan W, Shen B, Bu W, Zheng X, He Q, Cui Z, Ni D, Zhao K, Zhang S, Shi J. Intranuclear biophotonics by smart design of nuclear-targeting photo-/radio-sensitizers co-loaded upconversion nanoparticles. Biomaterials 2015; 69:89-98. [DOI: 10.1016/j.biomaterials.2015.08.017] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 08/07/2015] [Indexed: 11/27/2022]
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20
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Fan W, Shen B, Bu W, Zheng X, He Q, Cui Z, Zhao K, Zhang S, Shi J. Design of an intelligent sub-50 nm nuclear-targeting nanotheranostic system for imaging guided intranuclear radiosensitization. Chem Sci 2015; 6:1747-1753. [PMID: 28694946 PMCID: PMC5485887 DOI: 10.1039/c4sc03080j] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 12/05/2014] [Indexed: 11/21/2022] Open
Abstract
Clinically applied chemotherapy and radiotherapy is sometimes not effective due to the limited dose acting on DNA chains resident in the nuclei of cancerous cells. Herein, we develop a new theranostic technique of "intranuclear radiosensitization" aimed at directly damaging the DNA within the nucleus by a remarkable synergetic chemo-/radiotherapeutic effect based on intranuclear chemodrug-sensitized radiation enhancement. To achieve this goal, a sub-50 nm nuclear-targeting rattle-structured upconversion core/mesoporous silica nanotheranostic system was firstly constructed to directly transport the radiosensitizing drug Mitomycin C (MMC) into the nucleus for substantially enhanced synergetic chemo-/radiotherapy and simultaneous magnetic/upconversion luminescent (MR/UCL) bimodal imaging, which can lead to efficient cancer treatment as well as multi-drug resistance circumvention in vitro and in vivo. We hope the technique of intranuclear radiosensitization along with the design of nuclear-targeting nanotheranostics will contribute greatly to the development of cancer theranostics as well as to the improvement of the overall therapeutic effectiveness.
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Affiliation(s)
- Wenpei Fan
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures , Shanghai Institute of Ceramics , Chinese Academy of Sciences , Shanghai , 200050 , P. R. China . ;
| | - Bo Shen
- Institute of Radiation Medicine , Fudan University , Shanghai , 200032 , P. R. China
| | - Wenbo Bu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures , Shanghai Institute of Ceramics , Chinese Academy of Sciences , Shanghai , 200050 , P. R. China . ;
| | - Xiangpeng Zheng
- Department of Radiation Oncology , Shanghai Huadong Hospital , Fudan University , Shanghai , 200040 , P. R. China
| | - Qianjun He
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures , Shanghai Institute of Ceramics , Chinese Academy of Sciences , Shanghai , 200050 , P. R. China . ;
| | - Zhaowen Cui
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures , Shanghai Institute of Ceramics , Chinese Academy of Sciences , Shanghai , 200050 , P. R. China . ;
| | - Kuaile Zhao
- Department of Radiology , Shanghai Cancer Hospital , Fudan University , Shanghai , 200032 , P. R. China
| | - Shengjian Zhang
- Department of Radiology , Shanghai Cancer Hospital , Fudan University , Shanghai , 200032 , P. R. China
| | - Jianlin Shi
- State Key Laboratory of High Performance Ceramics and Superfine Microstructures , Shanghai Institute of Ceramics , Chinese Academy of Sciences , Shanghai , 200050 , P. R. China . ;
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21
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Zou X, Yao M, Ma L, Hossu M, Han X, Juzenas P, Chen W. X-ray-induced nanoparticle-based photodynamic therapy of cancer. Nanomedicine (Lond) 2014; 9:2339-51. [DOI: 10.2217/nnm.13.198] [Citation(s) in RCA: 134] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Aim: In this study, Ce3+-doped lanthanum(III) fluoride (LaF3:Ce3+) nanoparticles were synthesized by a wet-chemistry method in dimethyl sulfoxide (DMSO) and their application as an intracellular light source for photodynamic activation was demonstrated. Materials & methods: The LaF3:Ce3+/DMSO nanoparticles have a strong green emission with a peak at approximately 520 nm, which is effectively overlapped with the absorption of protoporphyrin IX (PPIX). The nanoparticles were encapsulated into poly(D,L-lactide-co-glycolide (PLGA) microspheres along with PPIX. Upon irradiation with x-rays (90 kV), energy transfer from the LaF3:Ce3+/DMSO nanoparticles to PPIX occurs and singlet oxygen is generated for cancer cell damage. Results: The LaF3:Ce3+/DMSO/PLGA or LaF3:Ce3+/DMSO/PPIX/PLGA microspheres alone caused only sublethal cytotoxicity to the cancer cells. Upon x-ray irradiation, the LaF3:Ce3+/DMSO/PPIX/PLGA microspheres induced oxidative stress, mitochondrial damage and DNA fragmentation on prostate cancer cells (PC3). Discussion: The results indicate that x-rays can activate LaF3:Ce3+ and PPIX nanocomposites, which can be a novel method for cancer destruction. Original submitted 7 June 2013; Revised submitted 25 September 2013
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Affiliation(s)
- Xiaoju Zou
- Department of Physics & the Center for Security Advances via Applied Nanotechnology, The University of Texas at Arlington, TX 76019-0059, USA
| | - Mingzhen Yao
- Department of Physics & the Center for Security Advances via Applied Nanotechnology, The University of Texas at Arlington, TX 76019-0059, USA
| | - Lun Ma
- Department of Physics & the Center for Security Advances via Applied Nanotechnology, The University of Texas at Arlington, TX 76019-0059, USA
| | - Marius Hossu
- Department of Physics & the Center for Security Advances via Applied Nanotechnology, The University of Texas at Arlington, TX 76019-0059, USA
| | - Xiumei Han
- School of Resources & Materials, Northeastern University at Qinhuangdao Branch, Qinhuangdao 066004, PR China
| | - Petras Juzenas
- Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Montebello 0310, Oslo, Norway
| | - Wei Chen
- Department of Physics & the Center for Security Advances via Applied Nanotechnology, The University of Texas at Arlington, TX 76019-0059, USA
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22
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Spyratou E, Makropoulou M, Mourelatou E, Demetzos C. Biophotonic techniques for manipulation and characterization of drug delivery nanosystems in cancer therapy. Cancer Lett 2012; 327:111-22. [DOI: 10.1016/j.canlet.2011.12.039] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Revised: 12/21/2011] [Accepted: 12/24/2011] [Indexed: 12/20/2022]
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23
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Ahn JC, Biswas R, Chung PS. Combination with genistein enhances the efficacy of photodynamic therapy against human anaplastic thyroid cancer cells. Lasers Surg Med 2012; 44:840-9. [DOI: 10.1002/lsm.22095] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/16/2012] [Indexed: 12/17/2022]
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24
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Benayoun L, Schaffer M, Bril R, Gingis-Velitski S, Segal E, Nevelsky A, Satchi-Fainaro R, Shaked Y. Porfimer-sodium (Photofrin-II) in combination with ionizing radiation inhibits tumor-initiating cell proliferation and improves glioblastoma treatment efficacy. Cancer Biol Ther 2012; 14:64-74. [PMID: 23114641 DOI: 10.4161/cbt.22630] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Tumor relapse and tumor cell repopulation has been explained partially by the drug-free break period between successive conventional treatments. Strategies to overcome tumor relapse have been proposed, such as the use of chemotherapeutic drugs or radiation in small, frequent fractionated doses without an extended break period between treatment intervals. Yet, tumors usually acquire resistance and eventually escape the therapy. Several mechanisms have been proposed to explain the resistance of tumors to therapy, one of which involves the cancer stem cell or tumor-initiating cell (TIC) concept. TICs are believed to resist many conventional therapies, in part due to their slow proliferation and self-renewal capacities. Therefore, emerging efforts to eradicate TICs are being undertaken. Here we show that treatment with Photofrin II, among the most frequently used photosensitizers, sensitized a TIC-enriched U-87MG human glioblastoma cell to radiation, and improve treatment outcome when used in combination with radiotherapy. A U-87MG tumor cell population enriched with radiation-resistant TICs becomes radio-sensitive, and an inhibition of cell proliferation and an increase in apoptosis are found in the presence of Photofrin II. Furthermore, U-87MG tumors implanted in mice treated with Photofrin II and radiation exhibit a significant reduction in angiogenesis and vasculogenesis, and an increased percentage of apoptotic TICs when compared with tumors grown in mice treated with radiation alone. Collectively, our results offer a new possible explanation for the therapeutic effects of radiosensitizing agents, and suggest that combinatorial treatment modalities can effectively prolong treatment outcome of glioblastoma tumors by inhibiting tumor growth mediated by TICs.
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Affiliation(s)
- Liat Benayoun
- Department of Molecular Pharmacology, Rappaport Faculty of Medicine, Technion, Haifa, Israel
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25
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Schaffer M, Kulka U, Ertl-Wagner B, Schaffer PM, Friso E, Hell R, Jori G, Hofstetter A, Dühmke E. Effect of Photofrin II as a radio-sensitizing agent in two different oesophageal carcinoma cell lines. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424605000587] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Background and Purpose: In spite of major advances in cancer treatment, the prognosis of patients with oesophageal carcinoma remains poor. Squamous cell carcinoma and adenocarcinoma account for 95% of all oesophageal tumors, although other histological subtypes are occasionally seen. We aimed to evaluate whether Photofrin II can enhance the effect of ionizing radiation on oesophageal cancer in an in vitro tumor model. Material and Methods: A human oesophageal squamous cancer cell line (OE-21) and a human oesophageal adenocarcinoma cell line (OE-33) were evaluated with and without incubation with Photofrin II. Cells were irradiated using doses ranging from 0 to 8 Gy. The response rate of the cells to irradiation was evaluated by a tetrazolium-based colorimetric assay, similar to the MTT test, with the aim to determine the efficiency of Photofrin II as a radiation sensitizer in comparison to irradiation alone. Results: The OE-21 cell line demonstrated a significantly reduced cellular survival rate, when irradiated in the presence of Photofrin, as compared to a control group irradiated in the absence of Photofrin II. For the OE-33 cell line, no significant differences were found between the group treated with Photofrin II and the control group. Conclusion: Our results demonstrate in an in vitro model that Photofrin II may act as a radio-sensitizer in squamous cell oesophageal cancer, but not in oesophageal adenocarcinoma.
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Affiliation(s)
- Moshe Schaffer
- Department of Radiation Therapy, University of Munich, Marchionini Str. 15, 81377 Munich, Germany
| | - Ulrike Kulka
- Department of Radiation Therapy, University of Munich, Marchionini Str. 15, 81377 Munich, Germany
| | - Birgit Ertl-Wagner
- Department of Radiology, University of Munich, Marchionini Str. 15, 81377 Munich, Germany
| | - Pamela M. Schaffer
- Department of Radiation Therapy, University of Munich, Marchionini Str. 15, 81377 Munich, Germany
| | - Elisabetta Friso
- Department of Biology, University of Padova, Via U. Bassi 58/ B, 35121 Padova, Italy
| | - Roswita Hell
- Department of Radiation Therapy, University of Munich, Marchionini Str. 15, 81377 Munich, Germany
| | - Giulio Jori
- Department of Biology, University of Padova, Via U. Bassi 58/ B, 35121 Padova, Italy
| | - Alfons Hofstetter
- Laser Research Laboratory, University of Munich, Marchionini Str. 15, 81377 Munich, Germany
| | - Eckhart Dühmke
- Department of Radiation Therapy, University of Munich, Marchionini Str. 15, 81377 Munich, Germany
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26
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Schaffer M, Kulka U, Schaffer P, Ertl-Wagner B, Corti L, Hell R, Hofstetter A, Jori G. The role of radical derivatives of high reactivity in the radiosensitizing action of Photofrin II. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424606000776] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The in vitro and in vivo efficacy of Photofrin II as a selective radiosensitizing agent has recently been demonstrated, the mechanism of action still being unknown. We aimed to investigate the mechanism of action of Photofrin II and the role played by radiolytically generated cytotoxic species. RT4 human bladder carcinoma cell lines were seeded and incubated with Photofrin II and mannitol, with Photofrin II alone, and with no added agent. The cells were treated with ionizing radiation (6 Gy). The numbers of colonies in the respective groups were compared. In addition, the influence of mannitol and histidine on cell survival after Photofrin-incubation and irradiation (0-1-2-4-6 Gy) was evaluated by a tetrazolium-based colorimetric assay in an ELISA reader. RT4 cells, which were exposed to 6 Gy radiation after incubation with Photofrin II, showed a significantly lower survival rate compared to cells exposed to the same radiation dose in the absence of Photofrin II ( p < 0.05 in a Student t-test). The addition of mannitol as a scavenger for OH radicals exerted a protective effect especially against the radiosensitizing action of Photofrin. Increased cell survival was observed when mannitol and histidine were present in addition to Photofrin II. The mechanism of radio sensitization by Photofrin II appears to involve the formation of radical derivatives of high reactivity, such as OH radicals.
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Affiliation(s)
- Moshe Schaffer
- Department of Radiation Oncology, University of Munich, Marchioninistr. 37, 81377 Munich, Germany
| | - Ulrike Kulka
- Department of Radiation Oncology, University of Munich, Marchioninistr. 37, 81377 Munich, Germany
| | - Pamela Schaffer
- Department of Radiation Oncology, University of Munich, Marchioninistr. 37, 81377 Munich, Germany
| | - Birgit Ertl-Wagner
- Inst. of Clinical Radiology, University of Munich, Marchioninistr. 37, 81377 Munich, Germany
| | - Luigi Corti
- Department of Radiation Oncology, University of Padova and Instituto Oncologico Veneto, Via Giustiniani 2, 35100 Padova, Italy
| | - Roswitha Hell
- Department of Radiation Oncology, University of Munich, Marchioninistr. 37, 81377 Munich, Germany
| | - Alfons Hofstetter
- Laser Research Laboratory, University of Munich, Marchioninistr. 37, 81377 Munich, Germany
| | - Giulio Jori
- Department of Biology, University of Padova, Via Ugo Bassi 58B, 35121 Padova, Italy
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27
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Lemay R, Tremblay-Morin JP, Ali H, Hunting D, van Lier JE, Paquette B. Synthesis and radiosensitizing properties of brominated tetrapyridine porphyrins. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424607000643] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Brominated derivatives of tetrapyridinium copper porphyrin were prepared via bromination of the β-positions (pyrrole rings) and/or the peripheral alkyl side-chains attached to the pyridine moieties. The radiosensitizing properties of these new cationic, brominated porphyrins were tested on MDA-MB-231 breast cancer cells in vitro using a 60 Co source or an X-ray irradiator. The non-brominated porphyrin and the porphyrin containing bromines at β-positions only were devoid of any radiosensitizing activity. However, a pronounced radiosensitizing effect was observed with the porphyrin containing bromo atoms at both β-positions and the peripheral side-chains. A similar radiosensitizing effect was detected for different radiation energies, suggesting that high energy photons could be used to treat tumors in conjunction with this novel brominated, porphyrin-based radiosensitizer.
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Affiliation(s)
- Rosalie Lemay
- Department of Nuclear Medicine and Radiobiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001 12th Avenue North, Sherbrooke, Québec J1H 5N4, Canada
| | - Jean-Philippe Tremblay-Morin
- Department of Chemistry, Faculty of Sciences, Université de Sherbrooke, 2500 boulevard de l'Université, Sherbrooke, Québec J1K 2R1, Canada
| | - Hasrat Ali
- Department of Nuclear Medicine and Radiobiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001 12th Avenue North, Sherbrooke, Québec J1H 5N4, Canada
| | - Darel Hunting
- Department of Nuclear Medicine and Radiobiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001 12th Avenue North, Sherbrooke, Québec J1H 5N4, Canada
| | - Johan E. van Lier
- Department of Nuclear Medicine and Radiobiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001 12th Avenue North, Sherbrooke, Québec J1H 5N4, Canada
| | - Benoit Paquette
- Department of Nuclear Medicine and Radiobiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001 12th Avenue North, Sherbrooke, Québec J1H 5N4, Canada
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28
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Ito E, Yue S, Moriyama EH, Hui AB, Kim I, Shi W, Alajez NM, Bhogal N, Li G, Datti A, Schimmer AD, Wilson BC, Liu PP, Durocher D, Neel BG, O'Sullivan B, Cummings B, Bristow R, Wrana J, Liu FF. Uroporphyrinogen decarboxylase is a radiosensitizing target for head and neck cancer. Sci Transl Med 2011; 3:67ra7. [PMID: 21270338 DOI: 10.1126/scitranslmed.3001922] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Head and neck cancer (HNC) is the eighth most common malignancy worldwide, comprising a diverse group of cancers affecting the head and neck region. Despite advances in therapeutic options over the last few decades, treatment toxicities and overall clinical outcomes have remained disappointing, thereby underscoring a need to develop novel therapeutic approaches in HNC treatment. Uroporphyrinogen decarboxylase (UROD), a key regulator of heme biosynthesis, was identified from an RNA interference-based high-throughput screen as a tumor-selective radiosensitizing target for HNC. UROD knockdown plus radiation induced caspase-mediated apoptosis and cell cycle arrest in HNC cells in vitro and suppressed the in vivo tumor-forming capacity of HNC cells, as well as delayed the growth of established tumor xenografts in mice. This radiosensitization appeared to be mediated by alterations in iron homeostasis and increased production of reactive oxygen species, resulting in enhanced tumor oxidative stress. Moreover, UROD was significantly overexpressed in HNC patient biopsies. Lower preradiation UROD mRNA expression correlated with improved disease-free survival, suggesting that UROD could potentially be used to predict radiation response. UROD down-regulation also radiosensitized several different models of human cancer, as well as sensitized tumors to chemotherapeutic agents, including 5-fluorouracil, cisplatin, and paclitaxel. Thus, our study has revealed UROD as a potent tumor-selective sensitizer for both radiation and chemotherapy, with potential relevance to many human malignancies.
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Affiliation(s)
- Emma Ito
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada M5G 2M9
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29
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Morgan NY, Kramer-Marek G, Smith PD, Camphausen K, Capala J. Nanoscintillator conjugates as photodynamic therapy-based radiosensitizers: calculation of required physical parameters. Radiat Res 2009; 171:236-44. [PMID: 19267550 PMCID: PMC3184550 DOI: 10.1667/rr1470.1] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The recent demonstration of nanoscale scintillators has led to interest in the combination of radiation and photodynamic therapy. In this model, scintillating nanoparticles conjugated to photosensitizers and molecular targeting agents would enhance the targeting and improve the efficacy of radiotherapy and extend the application of photodynamic therapy to deeply seated tumors. In this study, we calculated the physical parameters required for these nanoparticle conjugates to deliver cytotoxic levels of singlet oxygen at therapeutic radiation doses, drawing on the published literature from several disparate fields. Although uncertainties remain, it appears that the light yield of the nanoscintillators, the efficiency of energy transfer to the photosensitizers, and the cellular uptake of the nanoparticles all need to be fairly well optimized to observe a cytotoxic effect. Even so, the efficacy of the combination therapy will likely be restricted to X-ray energies below 300 keV, which limits the application to brachytherapy.
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Affiliation(s)
- Nicole Y Morgan
- Laboratory of Bioengineering and Physical Science, NIBIB, National Institutes of Health, Bethesda, Maryland 20892, USA.
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30
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Picard N, Ali H, van Lier JE, Klarskov K, Paquette B. Bromines on N-allyl position of cationic porphyrins affect both radio- and photosensitizing properties. Photochem Photobiol Sci 2009; 8:224-32. [DOI: 10.1039/b812623b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Sharma P, Farrell T, Patterson MS, Singh G, Wright JR, Sur R, Rainbow AJ. In vitro survival of nonsmall cell lung cancer cells following combined treatment with ionizing radiation and photofrin-mediated photodynamic therapy. Photochem Photobiol 2008; 85:99-106. [PMID: 18643904 DOI: 10.1111/j.1751-1097.2008.00401.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
It has been suggested that combination high dose rate (HDR) intraluminal brachytherapy and photodynamic therapy (PDT) in nonsmall cell lung cancer (NSCLC) may improve efficacy of treatment, reduce toxicity and enhance quality of life for patients. To provide a cellular basis for this we examined the in vitro sensitivity of MRC5 normal lung fibroblasts and four NSCLC cell lines following HDR radiation, PDT and combined HDR radiation and PDT. HDR radiation was cobalt-60 gamma rays (1.5-1.9 Gy min(-1)). For PDT treatment, cells were exposed to 2.5 microg mL(-1) Photofrin for 18-24 h followed by light exposure (20 mW cm(-2)). For combined treatment cells were exposed to Photofrin and then either exposed to light and 15-30 min later exposed to HDR radiation or exposed to HDR radiation and 15-30 min later exposed to light. D(37) values calculated from clonogenic survival curves indicated a six-fold difference in HDR radiation sensitivity and an eight-fold difference in PDT sensitivity. The effect of combined treatment was not significantly different from an additive effect of the individual treatment modalities for the NSCLC cells, but was significantly less than additive for the MRC5 cells. These results suggest an equivalent tumor cell kill may be possible at reduced systemic effects to patients.
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Affiliation(s)
- Prachi Sharma
- Department of Biology, McMaster University, Hamilton, ON, Canada
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32
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Schaffer M, Ertl-Wagner B, Schaffer PM, Kulka U, Jori G, Wilkowski R, Hofstetter A, Hofstetter A, Dühmke E. Feasibility of Photofrin II as a Radiosensitizing Agent in Solid Tumors – Preliminary Results. Oncol Res Treat 2006; 29:514-9. [PMID: 17068386 DOI: 10.1159/000095979] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND Photofrin II has been demonstrated to serve as a specific and selective radiosensitizing agent in in vitro and in vivo tumor models. We aimed to investigate the feasibility of a clinical application of Photofrin II. MATERIAL AND METHODS 12 patients were included in the study (7 unresectable solid tumors of the pelvic region, 3 malignant gliomas, 1 recurrent oropharyngeal cancer, 1 recurrent adenocarcinoma of the sphenoid sinus). The dose of ionizing irradiation was 30-50.4 Gy; a boost irradiation of 14 Gy was added for the pelvic region. All patients were intravenously injected with 1 mg/kg Photofrin II 24 h prior to the commencement of radiotherapy. Magnetic resonance imaging (MRI) controls and in some cases positron emission tomography (PET) were performed in short intervals. The mean follow-up was 12.9 months. RESULTS No major adverse events were noted. Minor adverse events consisted of mild diarrhea, nausea and skin reactions. A complete remission was observed in 4/12 patients. A reduction in local tumor volume of >45% was achieved in 4/12 patients. Stable disease was observed in 4/12 patients. 1 patient showed local disease progression after 5 months. CONCLUSION The early follow- up results are encouraging regarding the feasibility of the application of Photofrin II as a radiosensitizing agent.
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Affiliation(s)
- Moshe Schaffer
- Klinik und Poliklinik für Strahlentherapie und Radioonkologie, Universität München, Germany.
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33
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Synthesis, aerobic cytotoxicity, and radiosensitizing activity of novel 2,4-dinitrophenylamine tethered 5-fluorouracil and hydroxyurea. Bioorg Med Chem Lett 2006; 16:6034-8. [PMID: 16990003 DOI: 10.1016/j.bmcl.2006.08.122] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2006] [Revised: 08/16/2006] [Accepted: 08/30/2006] [Indexed: 10/24/2022]
Abstract
Two novel dual functional agents, 3[3-(2,4-dinitro-phenylamino)-propyl]-5-fluoro-1H-pyrimidine-2,4-dione 7 and N-[3-(2,4-dinitro-phenylamino)-propoxy]urea 8, resulting from linkage of 2,4-dinitrophenylamine through three carbon atoms with 5-fluorouracil 5 and hydroxyurea 6, respectively, were prepared and their in vitro aerobic cytotoxicities in HT-29 cell line with and without radiation were determined. Compounds 7 and 8 unlike their components were not cytotoxic but showed radiosensitizing activity.
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34
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Zoepf T, Jakobs R, Arnold JC, Apel D, Riemann JF. Palliation of nonresectable bile duct cancer: improved survival after photodynamic therapy. Am J Gastroenterol 2005; 100:2426-30. [PMID: 16279895 DOI: 10.1111/j.1572-0241.2005.00318.x] [Citation(s) in RCA: 211] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Preliminary uncontrolled studies of photodynamic therapy (PDT) of bile duct cancer (BDC) have shown astonishingly good results in the reduction of cholestasis, improvement of life quality, and potential improvement of survival time. Therefore, we investigated the influence of PDT on survival time in advanced BDC in a randomized controlled study. METHODS Thirty-two patients with nonresectable BDC were randomized. In the PDT group 48 h after intravenous application of 2 mg/kg body weight of Photosan-3((R)), light activation was performed. In the control group, patients were treated with endoprostheses but no PDT. RESULTS PDT group and the control group were comparable due to age, gender, performance status, bilirubin level, and BDC stage (Bismuth classification). The median survival time after randomization was 7 months for the control group and 21 months for the PDT group (p= 0.0109). In half of the initially percutaneously treated patients, we could change from percutaneous to transpapillary drainage after PDT. Four patients showed infectious complications after PDT versus one patient in the control group. DISCUSSION PDT is minimally invasive but shows a considerable postinterventional cholangitis rate. PDT has the potential to result in a changeover of current palliative treatment of BDC.
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Affiliation(s)
- Thomas Zoepf
- Department of Gastroenterology and Hepatology, University Hospital Essen, Germany
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35
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Luksiene Z, Juzenas P, Moan J. Radiosensitization of tumours by porphyrins. Cancer Lett 2005; 235:40-7. [PMID: 15946797 DOI: 10.1016/j.canlet.2005.03.041] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2005] [Revised: 03/28/2005] [Accepted: 03/30/2005] [Indexed: 10/25/2022]
Abstract
Our previous data indicate, that hematoporphyrin dimethyl ether (HPde) can totally inhibit the growth of aggressive Ehrlich ascite tumour, when combined with low doses (2Gy) of ionizing radiation. Taking into account these findings, it appears of particular interest to evaluate the dependence of radiosensitizing efficiency of porphyrins on tumour aggressiveness. For this purpose two experimental tumour models (aggressive murine Ehrlich ascite carcinoma, (EAT), and not-aggressive hepatoma MH-22A) were used. Moreover, radiosensitizing properties of three porphyrin-type compounds of different chemical heterogeneity were evaluated (hematoporphyrin dimethyl ether (HPde), photofrin II (PII) and hematoporphyrin derivative (HPD)). Data obtained indicate, that HPde is the most effective one in this context (HPde>PII>HPD). It is important to note, that only the aggressive EAT tumours were radiosensitized by these dyes. No signs of radiosensitization (inhibition of tumour growth, injury of tumour tissue, evaluated by histological analysis) were observed in not-aggressive MH-22A hepatoma. Moreover, it was shown, that ligands of peripheral benzodiazepine receptors (PBR) might diminish the cell growth in aggressive EAT, but not in not-aggressive MH-22A hepatoma. The mechanism of radiosensitization by porphyrins, proposed in our previous studies, was strongly confirmed by these data. Actually, dicarboxylic porphyrins, being ligands of PBR, which are highly expressed in just aggressive tumours, can inhibit tumour cell proliferation and act in concert with ionizing radiation. Thus, combination of porphyrin and ionising radiation reflects the action of two antiproliferative factors, what eventually increases the response of aggressive tumours to the low doses of ionising radiation.
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Affiliation(s)
- Zivile Luksiene
- Institute of Materials Science and Applied Research, Sauletekio 9, LT-10222 Vilnius, Lithuania.
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