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Aung W, Tsuji AB, Hanaoka K, Higashi T. Folate receptor-targeted near-infrared photodynamic therapy for folate receptor-overexpressing tumors. World J Clin Oncol 2022; 13:880-895. [PMID: 36483974 PMCID: PMC9724186 DOI: 10.5306/wjco.v13.i11.880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/12/2022] [Accepted: 10/18/2022] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Photodynamic therapy (PDT) is a minimally invasive form of cancer therapy, and the development of a novel photosensitizer (PS) with optimal properties is important for enhancing PDT efficacy. Folate receptor (FR) membrane protein is frequently overexpressed in 40% of human cancer and a good candidate for tumor-specific targeting. Specific active targeting of PS to FR can be achieved by conjugation with the folate moiety. A folate-linked, near-infrared (NIR)-sensitive probe, folate-Si-rhodamine-1 (FolateSiR-1), was previously developed and is expected to be applicable to NIR-PDT.
AIM To investigate the therapeutic efficacy of NIR-PDT induced by FolateSiR-1, a FR-targeted PS, in preclinical cancer models.
METHODS FolateSiR-1 was developed by conjugating a folate moiety to the Si-rhodamine derivative through a negatively charged tripeptide linker. FR expression in the designated cell lines was examined by western blotting (WB). The selective binding of FolateSiR-1 to FR was confirmed in FR overexpressing KB cells (FR+) and tumors by fluorescence microscopy and in vivo fluorescence imaging. Low FR expressing OVCAR-3 and A4 cell lines were used as negative controls (FR-). The NIR light (635 ± 3 nm)-induced phototoxic effect of FolateSiR-1 was evaluated by cell viability imaging assays. The time-dependent distribution of FolateSiR-1 and its specific accumulation in KB tumors was determined using in vivo longitudinal fluorescence imaging. The PDT effect of FolateSiR-1 was evaluated in KB tumor-bearing mice divided into four experimental groups: (1) FolateSiR-1 (100 μmol/L) alone; (2) FolateSiR-1 (100 μmol/L) followed by NIR irradiation (50 J/cm2); (3) NIR irradiation (50 J/cm2) alone; and (4) no treatment. Tumor volume measurement and immunohistochemical (IHC) and histological examinations of the tumors were performed to analyze the effect of PDT.
RESULTS High FR expression was observed in the KB cells by WB, but not in the OVCAR-3 and A4 cells. Substantial FR-specific binding of FolateSiR-1 was observed by in vitro and in vivo fluorescence imaging. Cell viability imaging assays showed that NIR-PDT induced cell death in KB cells. In vivo longitudinal fluorescence imaging showed rapid peak accumulation of FolateSiR-1 in the KB tumors 2 h after injection. In vivo PDT conducted at this time point caused tumor growth delay. The relative tumor volumes in the PDT group were significantly reduced compared to those in the other groups [5.81 ± 1.74 (NIR-PDT) vs 12.24 ± 2.48 (Folate-SiR-1), vs 11.84 ± 3.67 (IR), vs 12.98 ± 2.78 (Untreated), at Day 16, P < 0.05]. IHC analysis revealed reduced proliferation marker Ki-67-positive cells in the PDT treated tumors, and hematoxylin-eosin staining revealed features of necrotic- and apoptotic cell death.
CONCLUSION FolateSiR-1 has potential for use in PDT, and FR-targeted NIR-PDT may open a new effective strategy for the treatment of FR-overexpressing tumors.
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Affiliation(s)
- Winn Aung
- Department of Molecular Imaging and Theranostics, Institute for Quantum Medical Science, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Atsushi B Tsuji
- Department of Molecular Imaging and Theranostics, Institute for Quantum Medical Science, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Kenjiro Hanaoka
- Faculty of Pharmacy and Graduate School of Pharmaceutical Sciences, Keio University, Tokyo 105-8512, Japan
| | - Tatsuya Higashi
- Department of Molecular Imaging and Theranostics, Institute for Quantum Medical Science, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
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2
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Monaco H, Yokomizo S, Choi HS, Kashiwagi S. Quickly evolving near‐infrared photoimmunotherapy provides multifaceted approach to modern cancer treatment. VIEW 2022. [DOI: 10.1002/viw.20200110] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
- Hailey Monaco
- Gordon Center for Medical Imaging Department of Radiology Massachusetts General Hospital and Harvard Medical School Boston Massachusetts USA
| | - Shinya Yokomizo
- Gordon Center for Medical Imaging Department of Radiology Massachusetts General Hospital and Harvard Medical School Boston Massachusetts USA
- Department of Radiological Sciences Tokyo Metropolitan University Arakawa Tokyo Japan
| | - Hak Soo Choi
- Gordon Center for Medical Imaging Department of Radiology Massachusetts General Hospital and Harvard Medical School Boston Massachusetts USA
| | - Satoshi Kashiwagi
- Gordon Center for Medical Imaging Department of Radiology Massachusetts General Hospital and Harvard Medical School Boston Massachusetts USA
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3
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Wang D, Kyere E, Ahmed Sadiq F. New Trends in Photodynamic Inactivation (PDI) Combating Biofilms in the Food Industry-A Review. Foods 2021; 10:2587. [PMID: 34828868 PMCID: PMC8621587 DOI: 10.3390/foods10112587] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 10/19/2021] [Accepted: 10/22/2021] [Indexed: 12/26/2022] Open
Abstract
Biofilms cause problems in the food industry due to their persistence and incompetent hygiene processing technologies. Interest in photodynamic inactivation (PDI) for combating biofilms has increased in recent years. This technique can induce microbial cell death, reduce cell attachment, ruin biofilm biomolecules and eradicate structured biofilms without inducing microbial resistance. This review addresses microbial challenges posed by biofilms in food environments and highlights the advantages of PDI in preventing and eradicating microbial biofilm communities. Current findings of the antibiofilm efficiencies of this technique are summarized. Additionally, emphasis is given to its potential mechanisms and factors capable of influencing biofilm communities, as well as promising hurdle strategies.
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Affiliation(s)
- Dan Wang
- School of Food and Advanced Technology, Massey University, Palmerston North 4410, New Zealand;
| | - Emmanuel Kyere
- School of Food and Advanced Technology, Massey University, Palmerston North 4410, New Zealand;
| | - Faizan Ahmed Sadiq
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China;
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4
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Dong X, Zeng Y, Zhang Z, Fu J, You L, He Y, Hao Y, Gu Z, Yu Z, Qu C, Yin X, Ni J, Cruz LJ. Hypericin-mediated photodynamic therapy for the treatment of cancer: a review. J Pharm Pharmacol 2020; 73:425-436. [PMID: 33793828 DOI: 10.1093/jpp/rgaa018] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 10/05/2020] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Hypericin is a polycyclic aromatic naphthodianthrone that occurs naturally. It is also an active ingredient in some species of the genus Hypericum. Emerging evidence suggests that hypericin has attracted great attention as a potential anticancer drug and exhibits remarkable antiproliferative effect upon irradiation on various tumour cells. This paper aims to summarise the anticancer effect and molecular mechanisms modulated by hypericin-medicated photodynamic therapy and its potential role in the cancer treatment. KEY FINDINGS Hypericin-medicated photodynamic therapy could inhibit the proliferation of various tumour cells including bladder, colon, breast, cervical, glioma, leukaemia, hepatic, melanoma, lymphoma and lung cancers. The effect is primarily mediated by p38 mitogen-activated protein kinase (MAPK), JNK, PI3K, CCAAT-enhancer-binding protein homologous protein (CHOP)/TRIB3/Akt/mTOR, TRAIL/TRAIL-receptor, c-Met and Ephrin-Eph, the mitochondria and extrinsic signalling pathways. Furthermore, hypericin-medicated photodynamic therapy in conjunction with chemotherapeutic agents or targeted therapies is more effective in inhibiting the growth of tumour cells. SUMMARY During the past few decades, the anticancer properties of photoactivated hypericin have been extensively investigated. Hypericin-medicated photodynamic therapy can modulate a variety of proteins and genes and exhibit a great potential to be used as a therapeutic agent for various types of cancer.
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Affiliation(s)
- Xiaoxv Dong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China.,Department of Radiology, Division of Translational Nanobiomaterials and Imaging, Leiden University Medical Center, Leiden, The Netherlands
| | - Yawen Zeng
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Zhiqin Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Jing Fu
- Beijing Institute of Traditional Chinese Medicine, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Longtai You
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Yuanyuan He
- Department of Radiology, Division of Translational Nanobiomaterials and Imaging, Leiden University Medical Center, Leiden, The Netherlands
| | - Yang Hao
- Department of Radiology, Division of Translational Nanobiomaterials and Imaging, Leiden University Medical Center, Leiden, The Netherlands
| | - Zili Gu
- Department of Radiology, Division of Translational Nanobiomaterials and Imaging, Leiden University Medical Center, Leiden, The Netherlands
| | - Zhenfeng Yu
- Department of Radiology, Division of Translational Nanobiomaterials and Imaging, Leiden University Medical Center, Leiden, The Netherlands
| | - Changhai Qu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Xingbin Yin
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Jian Ni
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China.,Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Luis J Cruz
- Department of Radiology, Division of Translational Nanobiomaterials and Imaging, Leiden University Medical Center, Leiden, The Netherlands
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5
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Damke GMZF, Damke E, de Souza Bonfim-Mendonça P, Ratti BA, de Freitas Meirelles LE, da Silva VRS, Gonçalves RS, César GB, de Oliveira Silva S, Caetano W, Hioka N, Souza RP, Consolaro MEL. Selective photodynamic effects on cervical cancer cells provided by P123 Pluronic®-based nanoparticles modulating hypericin delivery. Life Sci 2020; 255:117858. [PMID: 32497635 DOI: 10.1016/j.lfs.2020.117858] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/22/2020] [Accepted: 05/25/2020] [Indexed: 12/24/2022]
Abstract
At present, cervical cancer is the fourth leading cause of cancer among women worldwide with no effective treatment options. In this study we aimed to evaluate the efficacy of hypericin (HYP) encapsulated on Pluronic® P123 (HYP/P123) photodynamic therapy (PDT) in a comprehensive panel of human cervical cancer-derived cell lines, including HeLa (HPV 18-positive), SiHa (HPV 16-positive), CaSki (HPV 16 and 18-positive), and C33A (HPV-negative), compared to a nontumorigenic human epithelial cell line (HaCaT). Were investigated: (i) cell cytotoxicity and phototoxicity, cellular uptake and subcellular distribution; (ii) cell death pathway and cellular oxidative stress; (iii) migration and invasion. Our results showed that HYP/P123 micelles had effective and selective time- and dose-dependent phototoxic effects on cervical cancer cells but not in HaCaT. Moreover, HYP/P123 micelles accumulated in endoplasmic reticulum, mitochondria and lysosomes, resulting in photodynamic cell death mainly by necrosis. HYP/P123 induced cellular oxidative stress mainly via type II mechanism of PDT and inhibited cancer cell migration and invasion mainly via MMP-2 inhibition. Taken together, our results indicate a potentially useful role of HYP/P123 micelles as a platform for HYP delivery to more specifically and effectively treat cervical cancers through PDT, suggesting they are worthy for in vivo preclinical evaluations.
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Affiliation(s)
| | - Edilson Damke
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Patrícia de Souza Bonfim-Mendonça
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Bianca Altrão Ratti
- Department of Basic Health Sciences, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Lyvia Eloiza de Freitas Meirelles
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Vânia Ramos Sela da Silva
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Renato Sonchini Gonçalves
- Department of Chemistry, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Gabriel Batista César
- Department of Chemistry, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Sueli de Oliveira Silva
- Department of Basic Health Sciences, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Wilker Caetano
- Department of Chemistry, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Noboru Hioka
- Department of Chemistry, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Raquel Pantarotto Souza
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil
| | - Marcia Edilaine Lopes Consolaro
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringá, Av. Colombo, 5790, 87025-210 Maringá, Paraná, Brazil.
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6
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Damke GMZF, Souza RP, Montanha MC, Damke E, Gonçalves RS, César GB, Kimura E, Caetano W, Hioka N, Consolaro MEL. Selective Photodynamic Effects on Breast Cancer Cells Provided by p123 Pluronic®- Based Nanoparticles Modulating Hypericin Delivery. Anticancer Agents Med Chem 2018; 20:1352-1367. [PMID: 30387402 DOI: 10.2174/1871520618666181102091010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 10/17/2018] [Accepted: 10/19/2018] [Indexed: 01/29/2023]
Abstract
BACKGROUND Breast cancer is the most relevant type of cancer and the second cause of cancer- related deaths among women in general. Currently, there is no effective treatment for breast cancer although advances in its initial diagnosis and treatment are available. Therefore, the value of novel anti-tumor therapeutic modalities remains an immediate unmet need in clinical practice. Following our previous work regarding the properties of the Pluronics with different photosensitizers (PS) for photodynamic therapy (PDT), in this study we aimed to evaluate the efficacy of supersaturated hypericin (HYP) encapsulated on Pluronic® P123 (HYP/P123) against breast cancer cells (MCF-7) and non-tumorigenic breast cells (MCF-10A). METHODS Cell internalization and subcellular distribution of HYP/P123 was confirmed by fluorescence microscopy. The phototoxicity and citototoxicity of HYP/P123 was assessed by trypan blue exclusion assay in the presence and absence of light. Long-term cytotoxicity was performed by clonogenic assay. Cell migration was determined by the wound-healing assay. Apoptosis and necrosis assays were performed by annexin VFITC/ propidium Iodide (PI) by fluorescence microscopy. RESULTS Our results showed that HYP/P123 micelles had high stability and high rates of binding to cells, which resulted in the selective internalization in MCF-7, indicating their potential to permeate the membrane of these cells. Moreover, HYP/P123 micelles accumulated in mitochondria and endoplasmic reticulum organelles, resulting in the photodynamic cell death by necrosis. Additionally, HYP/P123 micelles showed effective and selective time- and dose dependent phototoxic effects on MCF-7 cells but little damage to MCF-10A cells. HYP/P123 micelles inhibited the generation of cellular colonies, indicating a possible capability to prevent the recurrence of breast cancer. We also demonstrated that HYP/P123 micelles inhibit the migration of tumor cells, possibly by decreasing their ability to form metastases. CONCLUSION Taken together, the results presented here indicate a potentially useful role of HYP/P123 micelles as a platform for HYP delivery to more specifically and effectively treat human breast cancers through photodynamic therapy, suggesting they are worthy for in vivo preclinical evaluations.
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Affiliation(s)
| | - Raquel Pantarotto Souza
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringa, Parana, Brazil
| | | | - Edilson Damke
- Department of Clinical Analysis and Biomedicine, Universidade Estadual de Maringa, Parana, Brazil
| | | | | | - Elza Kimura
- Department of Pharmacy, Universidade Estadual de Maringa, Parana, Brazil
| | - Wilker Caetano
- Department of Chemistry, Universidade Estadual de Maringa, Parana, Brazil
| | - Noboru Hioka
- Department of Chemistry, Universidade Estadual de Maringa, Parana, Brazil
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7
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Post-illumination cellular effects of photodynamic treatment. PLoS One 2017; 12:e0188535. [PMID: 29200431 PMCID: PMC5714340 DOI: 10.1371/journal.pone.0188535] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Accepted: 11/08/2017] [Indexed: 12/15/2022] Open
Abstract
Increased interest in clinical application of photodynamic therapy (PDT) in various medical fields poses a demand for better understanding of processes triggered by photo-treatment. Most of the work on PDT performed so far has focused on the immediate effects of photo-treatment. It is generally accepted that cellular damage occurs during light exposure and within a short period thereafter. If cells are not killed during the PDT, they might recover, depending on the extent of the photo-induced damage. Little is known, however, about the relationship between the properties of photosensitizers (PSs) and the delayed consequences of PDT. The aim of this work was to investigate cellular responses to sub-lethal photodynamic treatment and how toxicogenic potency may be affected by molecular features of the PS. Results demonstrated that for cationic porphyrin-based PSs, lipophilicity is the main factor determining the fate of the cells in the 24-hour post-illumination period. PSs with amphiphilic properties initiated oxidative reactions that continued in the dark, long after light exposure, and caused suppression of metabolism and loss of cell viability with concomitant changes in electrophoretic mobility of proteins, including caspases. Apoptotic activity was not stimulated in the post-illumination period. This study demonstrated that in PDT mediated by amphiphilic cationic metalloporphyrin PSs, even when immediate photo-damage is relatively mild, destructive oxidative processes initiated during PDT continue in the absence of light to substantially impair metabolism, and that post-illumination protein modification may modify utilization of cell death pathways.
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8
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Mühleisen L, Alev M, Unterweger H, Subatzus D, Pöttler M, Friedrich RP, Alexiou C, Janko C. Analysis of Hypericin-Mediated Effects and Implications for Targeted Photodynamic Therapy. Int J Mol Sci 2017; 18:E1388. [PMID: 28661430 PMCID: PMC5535881 DOI: 10.3390/ijms18071388] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 06/19/2017] [Accepted: 06/23/2017] [Indexed: 12/11/2022] Open
Abstract
The phototoxic effect of hypericin can be utilized for Photodynamic Therapy (PDT) of cancer. After intravenous application and systemic distribution of the drug in the patient's body, the tumor site is exposed to light. Subsequently, toxic reactive oxygen species (ROS) are generated, inducing tumor cell death. To prevent unwanted activation of the drug in other regions of the body, patients have to avoid light during and after the treatment cycles, consequently impairing quality of life. Here, we characterize toxicity and hypericin-mediated effects on cancer cells in vitro and confirm that its effect clearly depends on concentration and illumination time. To reduce side effects and to increase therapy success, selective accumulation of hypericin in the tumor region is a promising solution. Loading hypericin on superparamagnetic iron oxide nanoparticles (SPIONs) and guiding them to the desired place using an external magnetic field might accomplish this task (referred to as Magnetic Drug Targeting (MDT)). Thus, using a double targeting strategy, namely magnetic accumulation and laser induced photoactivation, might improve treatment effectivity as well as specificity and reduce toxic side effects in future clinical applications.
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Affiliation(s)
- Laura Mühleisen
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung-Professorship, Universitätsklinikum Erlangen, 91054 Erlangen, Germany.
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany.
| | - Magdalena Alev
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung-Professorship, Universitätsklinikum Erlangen, 91054 Erlangen, Germany.
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany.
| | - Harald Unterweger
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung-Professorship, Universitätsklinikum Erlangen, 91054 Erlangen, Germany.
| | - Daniel Subatzus
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung-Professorship, Universitätsklinikum Erlangen, 91054 Erlangen, Germany.
| | - Marina Pöttler
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung-Professorship, Universitätsklinikum Erlangen, 91054 Erlangen, Germany.
| | - Ralf P Friedrich
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung-Professorship, Universitätsklinikum Erlangen, 91054 Erlangen, Germany.
| | - Christoph Alexiou
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung-Professorship, Universitätsklinikum Erlangen, 91054 Erlangen, Germany.
| | - Christina Janko
- Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung-Professorship, Universitätsklinikum Erlangen, 91054 Erlangen, Germany.
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9
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Photodithazine photodynamic effect on viability of 9L/lacZ gliosarcoma cell line. Lasers Med Sci 2017; 32:1245-1252. [DOI: 10.1007/s10103-017-2227-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 04/28/2017] [Indexed: 10/19/2022]
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van Straten D, Mashayekhi V, de Bruijn HS, Oliveira S, Robinson DJ. Oncologic Photodynamic Therapy: Basic Principles, Current Clinical Status and Future Directions. Cancers (Basel) 2017; 9:cancers9020019. [PMID: 28218708 PMCID: PMC5332942 DOI: 10.3390/cancers9020019] [Citation(s) in RCA: 571] [Impact Index Per Article: 81.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 02/10/2017] [Accepted: 02/12/2017] [Indexed: 12/12/2022] Open
Abstract
Photodynamic therapy (PDT) is a clinically approved cancer therapy, based on a photochemical reaction between a light activatable molecule or photosensitizer, light, and molecular oxygen. When these three harmless components are present together, reactive oxygen species are formed. These can directly damage cells and/or vasculature, and induce inflammatory and immune responses. PDT is a two-stage procedure, which starts with photosensitizer administration followed by a locally directed light exposure, with the aim of confined tumor destruction. Since its regulatory approval, over 30 years ago, PDT has been the subject of numerous studies and has proven to be an effective form of cancer therapy. This review provides an overview of the clinical trials conducted over the last 10 years, illustrating how PDT is applied in the clinic today. Furthermore, examples from ongoing clinical trials and the most recent preclinical studies are presented, to show the directions, in which PDT is headed, in the near and distant future. Despite the clinical success reported, PDT is still currently underutilized in the clinic. We also discuss the factors that hamper the exploration of this effective therapy and what should be changed to render it a more effective and more widely available option for patients.
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Affiliation(s)
- Demian van Straten
- Cell Biology, Department of Biology, Science Faculty, Utrecht University, Utrecht 3584 CH, The Netherlands.
| | - Vida Mashayekhi
- Cell Biology, Department of Biology, Science Faculty, Utrecht University, Utrecht 3584 CH, The Netherlands.
| | - Henriette S de Bruijn
- Center for Optical Diagnostics and Therapy, Department of Otolaryngology-Head and Neck Surgery, Erasmus Medical Center, Postbox 204, Rotterdam 3000 CA, The Netherlands.
| | - Sabrina Oliveira
- Cell Biology, Department of Biology, Science Faculty, Utrecht University, Utrecht 3584 CH, The Netherlands.
- Pharmaceutics, Department of Pharmaceutical Sciences, Science Faculty, Utrecht University, Utrecht 3584 CG, The Netherlands.
| | - Dominic J Robinson
- Center for Optical Diagnostics and Therapy, Department of Otolaryngology-Head and Neck Surgery, Erasmus Medical Center, Postbox 204, Rotterdam 3000 CA, The Netherlands.
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11
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Polyhydric Corrole and Its Gallium Complex: Synthesis, DNA-binding Properties and Photodynamic Activities. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201600482] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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12
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Shibuya K, Yamada T, Ichimura K. Morphological changes in senescing petal cells and the regulatory mechanism of petal senescence. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:5909-5918. [PMID: 27625416 DOI: 10.1093/jxb/erw337] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Petal senescence, or programmed cell death (PCD) in petals, is a developmentally regulated and genetically programmed process. During petal senescence, petal cells show morphological changes associated with PCD: tonoplast rupture and rapid destruction of the cytoplasm. This type of PCD is classified as vacuolar cell death or autolytic PCD based on morphological criteria. In PCD of petal cells, characteristic morphological features including an autophagy-like process, chromatin condensation, and nuclear fragmentation are also observed. While the phytohormone ethylene is known to play a crucial role in petal senescence in some plant species, little is known about the early regulation of ethylene-independent petal senescence. Recently, a NAC (NAM/ATAF1,2/CUC2) transcription factor was reported to control the progression of PCD during petal senescence in Japanese morning glory, which shows ethylene-independent petal senescence. In ethylene-dependent petal senescence, functional analyses of transcription factor genes have revealed the involvement of a basic helix-loop-helix protein and a homeodomain-leucine zipper protein in the transcriptional regulation of the ethylene biosynthesis pathway. Here we review the recent advances in our knowledge of petal senescence, mostly focusing on the morphology of senescing petal cells and the regulatory mechanisms of PCD by senescence-associated transcription factors during petal senescence.
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Affiliation(s)
- Kenichi Shibuya
- Institute of Vegetable and Floriculture Science, NARO, Tsukuba 305-0852, Japan
| | - Tetsuya Yamada
- Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - Kazuo Ichimura
- Institute of Vegetable and Floriculture Science, NARO, Tsukuba 305-0852, Japan
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Stegemann L, Schuermann KC, Strassert CA, Grecco HE. Photofunctional surfaces for quantitative fluorescence microscopy: monitoring the effects of photogenerated reactive oxygen species at single cell level with spatiotemporal resolution. ACS APPLIED MATERIALS & INTERFACES 2015; 7:5944-5949. [PMID: 25705918 DOI: 10.1021/acsami.5b00130] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Herein, we report on the implementation of photofunctional surfaces for the investigation of cellular responses by means of quantitative fluorescence microscopy. The developed substrates are able to produce reactive oxygen species under the fluorescence microscope upon irradiation with visible light, and the behavior of cells grown on these surfaces can be consequently investigated in situ and in real time. Moreover, a suitable methodology is presented to simultaneously monitor phototriggered morphological changes and the associated molecular pathways with spatiotemporal resolution employing time-resolved fluorescence anisotropy at the single cell level. The results showed that morphological changes can be complemented with a quantitative evaluation of the associated molecular signaling cascades for the unambiguous assignment of reactive oxygen species-related photoinduced apoptosis. Indeed, similar phenotypes are associated with different cellular processes. Our methodology facilitates the in vitro design and evaluation of photosensitizers for the treatment of cancer and infectious diseases with the aid of functional fluorescence microscopy.
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Affiliation(s)
- Linda Stegemann
- †Physikalisches Institut and Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster, Heisenbergstraße 11, D-48149 Münster, Germany
| | - Klaus C Schuermann
- ‡Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn Straße 11, D-44227 Dortmund, Germany
| | - Cristian A Strassert
- †Physikalisches Institut and Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster, Heisenbergstraße 11, D-48149 Münster, Germany
| | - Hernán E Grecco
- ‡Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn Straße 11, D-44227 Dortmund, Germany
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Ha JY, Kim MK, Lee JY, Choi EB, Hong CO, Lee BW, Bae CH, Kim KK. Isolation and Structure Identification of Photosensitizer from Perilla frutescens Leaves Which Induces Apoptosis in U937. ACTA ACUST UNITED AC 2015. [DOI: 10.5352/jls.2015.25.1.53] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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15
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Golf HRA, Reissig HU, Wiehe A. Regioselective Nucleophilic Aromatic Substitution Reaction ofmeso-Pentafluorophenyl-Substituted Porphyrinoids with Alcohols. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403503] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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16
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Castano AP, Demidova TN, Hamblin MR. Mechanisms in photodynamic therapy: part two-cellular signaling, cell metabolism and modes of cell death. Photodiagnosis Photodyn Ther 2014; 2:1-23. [PMID: 25048553 DOI: 10.1016/s1572-1000(05)00030-x] [Citation(s) in RCA: 487] [Impact Index Per Article: 48.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2005] [Revised: 03/09/2005] [Accepted: 03/09/2005] [Indexed: 12/29/2022]
Abstract
Photodynamic therapy (PDT) has been known for over a hundred years, but is only now becoming widely used. Originally developed as a tumor therapy, some of its most successful applications are for non-malignant disease. In the second of a series of three reviews, we will discuss the mechanisms that operate in PDT on a cellular level. In Part I [Castano AP, Demidova TN, Hamblin MR. Mechanism in photodynamic therapy: part one-photosensitizers, photochemistry and cellular localization. Photodiagn Photodyn Ther 2004;1:279-93] it was shown that one of the most important factors governing the outcome of PDT, is how the photosensitizer (PS) interacts with cells in the target tissue or tumor, and the key aspect of this interaction is the subcellular localization of the PS. PS can localize in mitochondria, lysosomes, endoplasmic reticulum, Golgi apparatus and plasma membranes. An explosion of investigation and explorations in the field of cell biology have elucidated many of the pathways that mammalian cells undergo when PS are delivered in tissue culture and subsequently illuminated. There is an acute stress response leading to changes in calcium and lipid metabolism and production of cytokines and stress proteins. Enzymes particularly, protein kinases, are activated and transcription factors are expressed. Many of the cellular responses are centered on mitochondria. These effects frequently lead to induction of apoptosis either by the mitochondrial pathway involving caspases and release of cytochrome c, or by pathways involving ceramide or death receptors. However, under certain circumstances cells subjected to PDT die by necrosis. Although there have been many reports of DNA damage caused by PDT, this is not thought to be an important cell-death pathway. This mechanistic research is expected to lead to optimization of PDT as a tumor treatment, and to rational selection of combination therapies that include PDT as a component.
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Affiliation(s)
- Ana P Castano
- BAR314B, Wellman Center for Photomedicine, Massachusetts General Hospital, 50 Blossom Street, Bartlett 3, Boston, MA 02114, USA; Department of Dermatology, Harvard Medical School, USA
| | - Tatiana N Demidova
- BAR314B, Wellman Center for Photomedicine, Massachusetts General Hospital, 50 Blossom Street, Bartlett 3, Boston, MA 02114, USA; Department of Cellular, Molecular and Developmental Biology, Tufts University, USA
| | - Michael R Hamblin
- BAR314B, Wellman Center for Photomedicine, Massachusetts General Hospital, 50 Blossom Street, Bartlett 3, Boston, MA 02114, USA; Department of Dermatology, Harvard Medical School, USA
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Larisch P, Verwanger T, Linecker M, Krammer B. The interrelation between a pro-inflammatory milieu and fluorescence diagnosis or photodynamic therapy of human skin cell lines. Photodiagnosis Photodyn Ther 2014; 11:91-103. [DOI: 10.1016/j.pdpdt.2014.01.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 01/13/2014] [Accepted: 01/16/2014] [Indexed: 01/03/2023]
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18
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Mikešová L, Mikeš J, Kovaľ J, Gyurászová K, Čulka Ľ, Vargová J, Valeková B, Fedoročko P. Conjunction of glutathione level, NAD(P)H/FAD redox status and hypericin content as a potential factor affecting colon cancer cell resistance to photodynamic therapy with hypericin. Photodiagnosis Photodyn Ther 2013; 10:470-83. [DOI: 10.1016/j.pdpdt.2013.04.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 04/12/2013] [Accepted: 04/16/2013] [Indexed: 10/26/2022]
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Mroz P, Yaroslavsky A, Kharkwal GB, Hamblin MR. Cell death pathways in photodynamic therapy of cancer. Cancers (Basel) 2013; 3:2516-39. [PMID: 23914299 PMCID: PMC3729395 DOI: 10.3390/cancers3022516] [Citation(s) in RCA: 433] [Impact Index Per Article: 39.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Photodynamic therapy (PDT) is an emerging cancer therapy that uses the combination of non-toxic dyes or photosensitizers (PS) and harmless visible light to produce reactive oxygen species and destroy tumors. The PS can be localized in various organelles such as mitochondria, lysosomes, endoplasmic reticulum, Golgi apparatus and plasma membranes and this sub-cellular location governs much of the signaling that occurs after PDT. There is an acute stress response that leads to changes in calcium and lipid metabolism and causes the production of cytokines and stress response mediators. Enzymes (particularly protein kinases) are activated and transcription factors are expressed. Many of the cellular responses center on mitochondria and frequently lead to induction of apoptosis by the mitochondrial pathway involving caspase activation and release of cytochrome c. Certain specific proteins (such as Bcl-2) are damaged by PDT-induced oxidation thereby increasing apoptosis, and a build-up of oxidized proteins leads to an ER-stress response that may be increased by proteasome inhibition. Autophagy plays a role in either inhibiting or enhancing cell death after PDT.
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Affiliation(s)
- Pawel Mroz
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA; E-Mails: (A.Y.); (G.K.); (M.R.H.)
- Department of Dermatology, Harvard Medical School, Boston, MA 02114, USA
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-617 726 1870; Fax: +1-617-726-8566
| | - Anastasia Yaroslavsky
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA; E-Mails: (A.Y.); (G.K.); (M.R.H.)
- Boston University College of Engineering, Boston, MA 02114, USA
| | - Gitika B Kharkwal
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA; E-Mails: (A.Y.); (G.K.); (M.R.H.)
- Department of Dermatology, Harvard Medical School, Boston, MA 02114, USA
| | - Michael R. Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA; E-Mails: (A.Y.); (G.K.); (M.R.H.)
- Department of Dermatology, Harvard Medical School, Boston, MA 02114, USA
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, USA
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20
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Wang J, Stachon T, Eppig T, Langenbucher A, Seitz B, Szentmáry N. Impact of photodynamic inactivation (PDI) using the photosensitizer chlorin e6 on viability, apoptosis, and proliferation of human keratocytes in vitro. Graefes Arch Clin Exp Ophthalmol 2013; 251:2725-31. [PMID: 24085386 DOI: 10.1007/s00417-013-2470-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 09/11/2013] [Accepted: 09/13/2013] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Photodynamic inactivation (PDI) may be a potential alternative in cases of therapy-resistant infectious keratitis. The purpose of our study was to determine the impact of PDI using the photosensitizer chlorin e6 (Ce6) on viability, apoptosis, and proliferation of human keratocytes, in vitro. METHODS Primary human keratocytes were isolated by digestion in collagenase (1 mg/ml) from human corneal buttons, and cultured in DMEM/Ham's F12 medium supplemented with 10 % FCS. Keratocyte cell cultures underwent illumination using red (670 nm) light for 13 min following exposure to 50 nM to 64 μM concentrations of Ce6 in the culture medium. Twenty-four hours after PDI, cell viability was evaluated by the Alamar blue assay, total DNA content of the cells and apoptosis using the APO-DIRECT Kit, and cell proliferation by the BrdU Cell Proliferation Assay Kit. RESULTS Using Ce6 or illumination only, we did not detect significant changes of cell viability, apoptosis, and proliferation. Using illumination, viability of keratocytes decreased significantly above 100 nM (P < 0.01), and proliferation at 250 nM Ce6 concentration (P = 0.01) and the percentage of apoptotic keratocytes increased significantly at 500 nM (P < 0.01) concentration. CONCLUSIONS In the short term, photodynamic inactivation using Ce6 decreases viability and proliferation, and also triggers apoptosis of human keratocytes, in vitro.
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Affiliation(s)
- Jiong Wang
- Department of Ophthalmology, Saarland University Medical Center, Kirrberger Str 100, 66424, Homburg/Saar, Germany,
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21
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Udartseva OO, Andreeva ER, Buravkova LB. Effects of photodynamic treatment on mesenchymal stromal cells. DOKLADY BIOLOGICAL SCIENCES : PROCEEDINGS OF THE ACADEMY OF SCIENCES OF THE USSR, BIOLOGICAL SCIENCES SECTIONS 2013; 450:185-8. [PMID: 23821063 DOI: 10.1134/s0012496613030174] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Indexed: 11/23/2022]
Affiliation(s)
- O O Udartseva
- Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia
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22
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Barathan M, Mariappan V, Shankar EM, Abdullah BJJ, Goh KL, Vadivelu J. Hypericin-photodynamic therapy leads to interleukin-6 secretion by HepG2 cells and their apoptosis via recruitment of BH3 interacting-domain death agonist and caspases. Cell Death Dis 2013; 4:e697. [PMID: 23807226 PMCID: PMC3702308 DOI: 10.1038/cddis.2013.219] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Photodynamic therapy (PDT) has emerged as a capable therapeutic modality for the treatment of cancer. PDT is a targeted cancer therapy that reportedly leads to tumor cell apoptosis and/or necrosis by facilitating the secretion of certain pro-inflammatory cytokines and expression of multiple apoptotic mediators in the tumor microenvironment. In addition, PDT also triggers oxidative stress that directs tumor cell killing and activation of inflammatory responses. However, the cellular and molecular mechanisms underlying the role of PDT in facilitating tumor cell apoptosis remain ambiguous. Here, we investigated the ability of PDT in association with hypericin (HY) to induce tumor cell apoptosis by facilitating the induction of reactive oxygen species (ROS) and secretion of Th1/Th2/Th17 cytokines in human hepatocellular liver carcinoma cell line (HepG2) cells. To discover if any apoptotic mediators were implicated in the enhancement of cell death of HY-PDT-treated tumor cells, selected gene profiling in response to HY-PDT treatment was implemented. Experimental results showed that interleukin (IL)-6 was significantly increased in all HY-PDT-treated cells, especially in 1 μg/ml HY-PDT, resulting in cell death. In addition, quantitative real-time PCR analysis revealed that the expression of apoptotic genes, such as BH3-interacting-domain death agonist (BID), cytochrome complex (CYT-C) and caspases (CASP3, 6, 7, 8 and 9) was remarkably higher in HY-PDT-treated HepG2 cells than the untreated HepG2 cells, entailing that tumor destruction of immune-mediated cell death occurs only in PDT-treated tumor cells. Hence, we showed that HY-PDT treatment induces apoptosis in HepG2 cells by facilitating cytotoxic ROS, and potentially recruits IL-6 and apoptosis mediators, providing additional hints for the existence of alternative mechanisms of anti-tumor immunity in hepatocellular carcinoma, which contribute to long-term suppression of tumor growth following PDT.
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Affiliation(s)
- M Barathan
- Tropical Infectious Disease Research and Education Center (TIDREC), Department of Medical Microbiology, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Quassinti L, Lupidi G, Maggi F, Sagratini G, Papa F, Vittori S, Bianco A, Bramucci M. Antioxidant and antiproliferative activity ofHypericum hircinumL. subsp.majus(Aiton) N. Robson essential oil. Nat Prod Res 2013; 27:862-8. [DOI: 10.1080/14786419.2012.677044] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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24
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Paz A, Roth E, Ashani Y, Xu Y, Shnyrov VL, Sussman JL, Silman I, Weiner L. Structural and functional characterization of the interaction of the photosensitizing probe methylene blue with Torpedo californica acetylcholinesterase. Protein Sci 2012; 21:1138-52. [PMID: 22674800 PMCID: PMC3537235 DOI: 10.1002/pro.2101] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2012] [Revised: 05/16/2012] [Accepted: 05/16/2012] [Indexed: 11/09/2022]
Abstract
The photosensitizer, methylene blue (MB), generates singlet oxygen that irreversibly inhibits Torpedo californica acetylcholinesterase (TcAChE). In the dark, it inhibits reversibly. Binding is accompanied by a bathochromic absorption shift, used to demonstrate displacement by other acetylcholinesterase inhibitors interacting with the catalytic "anionic" subsite (CAS), the peripheral "anionic" subsite (PAS), or bridging them. MB is a noncompetitive inhibitor of TcAChE, competing with reversible inhibitors directed at both "anionic" subsites, but a single site is involved in inhibition. MB also quenches TcAChE's intrinsic fluorescence. It binds to TcAChE covalently inhibited by a small organophosphate (OP), but not an OP containing a bulky pyrene. Differential scanning calorimetry shows an ~8° increase in the denaturation temperature of the MB/TcAChE complex relative to native TcAChE, and a less than twofold increase in cooperativity of the transition. The crystal structure reveals a single MB stacked against Trp279 in the PAS, oriented down the gorge toward the CAS; it is plausible that irreversible inhibition is associated with photooxidation of this residue and others within the active-site gorge. The kinetic and spectroscopic data showing that inhibitors binding at the CAS can impede binding of MB are reconciled by docking studies showing that the conformation adopted by Phe330, midway down the gorge, in the MB/TcAChE crystal structure, precludes simultaneous binding of a second MB at the CAS. Conversely, binding of ligands at the CAS dislodges MB from its preferred locus at the PAS. The data presented demonstrate that TcAChE is a valuable model for understanding the molecular basis of local photooxidative damage.
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Affiliation(s)
- Aviv Paz
- Department of Neurobiology, Weizmann Institute of ScienceRehovot 76100, Israel
- Department of Structural Biology, Weizmann Institute of ScienceRehovot 76100, Israel
| | - Esther Roth
- Department of Neurobiology, Weizmann Institute of ScienceRehovot 76100, Israel
| | - Yacov Ashani
- Department of Neurobiology, Weizmann Institute of ScienceRehovot 76100, Israel
| | - Yechun Xu
- Department of Neurobiology, Weizmann Institute of ScienceRehovot 76100, Israel
- Department of Structural Biology, Weizmann Institute of ScienceRehovot 76100, Israel
| | - Valery L Shnyrov
- Department of Biochemistry and Molecular Biology, Universidad de SalamancaSalamanca 37007, Spain
| | - Joel L Sussman
- Department of Structural Biology, Weizmann Institute of ScienceRehovot 76100, Israel
| | - Israel Silman
- Department of Neurobiology, Weizmann Institute of ScienceRehovot 76100, Israel
| | - Lev Weiner
- Department of Chemical Research Support, Weizmann Institute of ScienceRehovot 76100, Israel
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Chen X, Zhao P, Chen F, Li L, Luo R. Effect and mechanism of 5-aminolevulinic acid-mediated photodynamic therapy in esophageal cancer. Lasers Med Sci 2010; 26:69-78. [PMID: 20676910 DOI: 10.1007/s10103-010-0810-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2009] [Accepted: 06/14/2010] [Indexed: 12/14/2022]
Abstract
5-aminolevulinic acid-mediated photodynamic therapy (ALA-PDT) provides a novel and promising treatment for esophageal cancer. However, its specific mechanism has not been fully elucidated and its efficacy is remarkably varied. This study investigated the effect of ALA-PDT on esophageal squamous carcinoma cell line Eca-109 in vitro and vivo to explore optimal parameters, and evaluated the significance of cell apoptosis, cell cycle, ALA-protoporphyrin IX (ALA-PpIX) subcellular localization, and expression of Bcl-2 and Bax mRNA in cells to understand the mechanism of ALA-PDT for esophageal cancer. How ALA concentration, incubation time, and laser irradiation dose influenced the cell proliferation was determined by MTT assay. ALA-PpIX subcellular localization was analyzed by confocal microscopy. The mRNA changes were detected by quantitative real-time polymerase chain reaction (QRT-PCR). Tumor models transplanted with Eca-109 cells in nude mice were established (n = 10) and killed (n = 4) at 24 h post-PDT for malondialdehyde (MDA) detection and histological study. The remaining mice were measured the tumor size for 3 weeks after treatment. Our data show that ALA-PDT significantly inhibits cell proliferation (p < 0.05), the PDT efficacy depends on the saturation of ALA concentration, incubation time, and laser irradiation dose, and the best effect in tumor destruction is at 7-14 days post-PDT. ALA-PpIX is localized in mitochondria and cytoplasm. ALA-PDT induces cell apoptosis and arrests cell cycle at G0/G1 phase. Bcl-2 is significantly down-regulated while Bax is up-regulated (p < 0.05). The results of this study provide references in choosing clinical optimal PDT parameters and help in better understanding the PDT mechanism for esophageal cancer.
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Affiliation(s)
- Xiaohua Chen
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China
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Králová J, Bříza T, Moserová I, Dolenský B, Vašek P, Poučková P, Kejík Z, Kaplánek R, Martásek P, Dvořák M, Král V. Glycol Porphyrin Derivatives as Potent Photodynamic Inducers of Apoptosis in Tumor Cells. J Med Chem 2008; 51:5964-73. [DOI: 10.1021/jm8002119] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jarmila Králová
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic, Institute of Chemical Technology, Technicka 5, 166 28 Prague 6, Czech Republic, First Faculty of Medicine, Charles University in Prague, Katerinska 32, 121 08 Prague 2, Czech Republic, and Zentiva Research & Development, U Kabelovny 130, 10237 Prague 10, Czech Republic
| | - Tomáš Bříza
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic, Institute of Chemical Technology, Technicka 5, 166 28 Prague 6, Czech Republic, First Faculty of Medicine, Charles University in Prague, Katerinska 32, 121 08 Prague 2, Czech Republic, and Zentiva Research & Development, U Kabelovny 130, 10237 Prague 10, Czech Republic
| | - Irena Moserová
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic, Institute of Chemical Technology, Technicka 5, 166 28 Prague 6, Czech Republic, First Faculty of Medicine, Charles University in Prague, Katerinska 32, 121 08 Prague 2, Czech Republic, and Zentiva Research & Development, U Kabelovny 130, 10237 Prague 10, Czech Republic
| | - Bohumil Dolenský
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic, Institute of Chemical Technology, Technicka 5, 166 28 Prague 6, Czech Republic, First Faculty of Medicine, Charles University in Prague, Katerinska 32, 121 08 Prague 2, Czech Republic, and Zentiva Research & Development, U Kabelovny 130, 10237 Prague 10, Czech Republic
| | - Petr Vašek
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic, Institute of Chemical Technology, Technicka 5, 166 28 Prague 6, Czech Republic, First Faculty of Medicine, Charles University in Prague, Katerinska 32, 121 08 Prague 2, Czech Republic, and Zentiva Research & Development, U Kabelovny 130, 10237 Prague 10, Czech Republic
| | - Pavla Poučková
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic, Institute of Chemical Technology, Technicka 5, 166 28 Prague 6, Czech Republic, First Faculty of Medicine, Charles University in Prague, Katerinska 32, 121 08 Prague 2, Czech Republic, and Zentiva Research & Development, U Kabelovny 130, 10237 Prague 10, Czech Republic
| | - Zdeněk Kejík
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic, Institute of Chemical Technology, Technicka 5, 166 28 Prague 6, Czech Republic, First Faculty of Medicine, Charles University in Prague, Katerinska 32, 121 08 Prague 2, Czech Republic, and Zentiva Research & Development, U Kabelovny 130, 10237 Prague 10, Czech Republic
| | - Robert Kaplánek
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic, Institute of Chemical Technology, Technicka 5, 166 28 Prague 6, Czech Republic, First Faculty of Medicine, Charles University in Prague, Katerinska 32, 121 08 Prague 2, Czech Republic, and Zentiva Research & Development, U Kabelovny 130, 10237 Prague 10, Czech Republic
| | - Pavel Martásek
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic, Institute of Chemical Technology, Technicka 5, 166 28 Prague 6, Czech Republic, First Faculty of Medicine, Charles University in Prague, Katerinska 32, 121 08 Prague 2, Czech Republic, and Zentiva Research & Development, U Kabelovny 130, 10237 Prague 10, Czech Republic
| | - Michal Dvořák
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic, Institute of Chemical Technology, Technicka 5, 166 28 Prague 6, Czech Republic, First Faculty of Medicine, Charles University in Prague, Katerinska 32, 121 08 Prague 2, Czech Republic, and Zentiva Research & Development, U Kabelovny 130, 10237 Prague 10, Czech Republic
| | - Vladimír Král
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic, Institute of Chemical Technology, Technicka 5, 166 28 Prague 6, Czech Republic, First Faculty of Medicine, Charles University in Prague, Katerinska 32, 121 08 Prague 2, Czech Republic, and Zentiva Research & Development, U Kabelovny 130, 10237 Prague 10, Czech Republic
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Bae SI, Zhao R, Snapka RM. PCNA damage caused by antineoplastic drugs. Biochem Pharmacol 2008; 76:1653-68. [PMID: 18823950 DOI: 10.1016/j.bcp.2008.09.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2008] [Revised: 08/27/2008] [Accepted: 09/02/2008] [Indexed: 01/18/2023]
Abstract
Structurally diverse chemotherapeutic and chemopreventive drugs, including camptothecin, doxorubicin, sanguinarine, and others, were found to cause covalent crosslinking of proliferating cell nuclear antigen (PCNA) trimers in mammalian cells exposed to fluorescent light. This PCNA damage was caused by both nuclear and cytoplasmically localizing drugs. For some drugs, the PCNA crosslinking was evident even with very brief exposures to laboratory room lighting. In the absence of drugs, there was no detectable covalent crosslinking of PCNA trimers. Other proteins were photo-crosslinked to PCNA at much lower levels, including crosslinking of additional PCNA to the PCNA trimer. The proteins photo-crosslinked to PCNA did not vary with cell type or drug. PCNA was not crosslinked to itself or to other proteins by superoxide, hydrogen peroxide or hydroxyl radicals, but hydrogen peroxide caused monoubiquitination of PCNA. Quenching of PCNA photo-crosslinking by histidine, and enhancement by deuterium oxide, suggest a role for singlet oxygen in the crosslinking. SV40 large T antigen hexamers were also efficiently covalently photo-crosslinked by drugs and light. Photodynamic crosslinking of nuclear proteins by cytoplasmically localizing drugs, together with other evidence, argues that these drugs may reach the nucleoplasm in amounts sufficient to photodamage important chromosomal enzymes. The covalent crosslinking of PCNA trimers provides an extremely sensitive biomarker for photodynamic damage. The damage to PCNA and large T antigen raises the possibility that DNA damage signaling and repair mechanisms may be compromised when cells treated with antineoplastic drugs are exposed to visible light.
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Affiliation(s)
- Soo In Bae
- Department of Radiology, Division of Radiobiology, The Ohio State University, Columbus, OH 43240, United States
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Chiarini A, Whitfield JF, Pacchiana R, Armato U, Dal Pra I. Photoexcited calphostin C selectively destroys nuclear lamin B1 in neoplastic human and rat cells - a novel mechanism of action of a photodynamic tumor therapy agent. BIOCHIMICA ET BIOPHYSICA ACTA 2008; 1783:1642-53. [PMID: 18439918 DOI: 10.1016/j.bbamcr.2008.03.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2008] [Revised: 03/14/2008] [Accepted: 03/14/2008] [Indexed: 11/15/2022]
Abstract
Lamin B1, a major component of the nuclear lamina, anchors the nucleus to the cytoskeletal cage, and controls nuclear orientation, chromosome positioning and, alongside several enzymes, fundamental nuclear functions. Exposing polyomavirus-transformed rat pyF111 fibroblasts and human cervical carcinoma (HCC) C4-I cells for 30 min to photoexcited perylenequinone calphostin C, i.e. Cal C(phiE), an established reactive oxygen species (ROS)-generator and protein kinase C (PKC) inhibitor, caused the cells to selectively oxidize and then totally destroy their nuclear lamin B1 by only 60 min after starting the treatment, i.e. when apoptotic caspases' activities had not yet increased. However, while the oxidized lamin B1 was being destroyed, lamins A/C, the lamin A-associated nuclear envelope protein emerin, and the nucleoplasmic protein cyclin E were neither oxidized nor destroyed. The oxidized lamin B was ubiquitinated and demolished in the proteasome probably by an enhanced peptidyl-glutaminase-like activity. Hence, the Cal C(phiE)-induced rapid and selective lamin B1 oxidation and proteasomal destruction ahead of the activation of apoptotic caspases was by itself a most severe molecular lesion impairing vital nuclear functions. Conversely, Cal C directly added to the cells kept in the dark damaged neither nuclear lamin B1 nor cell viability. Thus, our findings reveal a novel cell-damaging mechanism of a photodynamic tumor therapeutic agent.
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Affiliation(s)
- Anna Chiarini
- Histology and Embryology Unit, Department of Biomedical and Surgical Sciences, University of Verona Medical School, Verona, I-37134, Italy
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Bonneau S, Vever-Bizet C. Tetrapyrrole photosensitisers, determinants of subcellular localisation and mechanisms of photodynamic processes in therapeutic approaches. Expert Opin Ther Pat 2008. [DOI: 10.1517/13543776.18.9.1011] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Kralova J, Dvorak M, Koc M, Kral V. p38 MAPK plays an essential role in apoptosis induced by photoactivation of a novel ethylene glycol porphyrin derivative. Oncogene 2007; 27:3010-20. [DOI: 10.1038/sj.onc.1210960] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Lavie G, Barliya T, Mandel M, Blank M, Ron Y, Orenstein A, Livnat T, Friedman N, Weiner L, Sheves M, Weinberger D. "Competitive Quenching": A Mechanism by Which Perihydroxylated Perylenequinone Photosensitizers Can Prevent Adverse Phototoxic Damage Caused by Verteporfin During Photodynamic Therapy. Photochem Photobiol 2007; 83:1270-7. [PMID: 17880523 DOI: 10.1111/j.1751-1097.2007.00171.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Incorporation of photodynamic therapy into clinical practice for induction of vascular photo-occlusion highlights the need to prevent adverse phototoxicity to sensitive juxtaposed tissues, particularly in the retina. We developed a system termed "competitive quenching" to prevent adverse phototoxic damage. It involves differential compartmentalization of a photoactivator to the intravascular compartment for photoexcitation and delivery of phototoxicity to targeted vessels. A different photodynamic agent is partitioned to the extravascular retinal space to quench reactive oxygen species generated by photosensitization, thereby protecting the adjacent retinal tissues from adverse phototoxicity. The absorption spectra of quenchers must span wavelengths that are shorter and excluded from the spectral range of photoexcitation light to prevent photoactivation of the quencher. Perihydroxylated perylenequinones were found to be suitable to function as "competitive quenchers" with the prototype hypericin identified as a potent quencher. Here we examined the mechanisms operative in competitive quenching and suggest that hypericin forms a complex with verteporfin, thereby quenching singlet oxygen formation. Furthermore, we show that hypericin, with six phenolic hydroxyls, protects retinal and endothelial hybridoma cells from phototoxicity more effectively than the dimethyl tetrahydroxy helianthrone structural analog with only four such phenolic hydroxyls. The findings suggest that hydroxyl numbers contribute to the efficacy of competitive quenching.
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Affiliation(s)
- Gad Lavie
- Institute of Hematology & Blood Center, Sheba Medical Center, Tel-Hashomer, Israel.
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Blank M, Kostenich G, Lavie G, Kimel S, Keisari Y, Orenstein A. Wavelength-dependent Properties of Photodynamic Therapy Using Hypericin in vitro and in an Animal Model¶. Photochem Photobiol 2007. [DOI: 10.1562/0031-8655(2002)0760335wdpopt2.0.co2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Rahimipour S, Palivan C, Freeman D, Barbosa F, Fridkin M, Weiner L, Mazur Y, Gescheidt G. Hypericin Derivatives: Substituent Effects on Radical-anion Formation. Photochem Photobiol 2007. [DOI: 10.1562/0031-8655(2001)0740149hdseor2.0.co2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Prince AM, Pascual D, Meruelo D, Liebes L, Mazur Y, Dubovi E, Mandel M, Lavie G. Strategies for Evaluation of Enveloped Virus Inactivation in Red Cell Concentrates Using Hypericin. Photochem Photobiol 2007. [DOI: 10.1562/0031-8655(2000)0710188sfeoev2.0.co2] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Rahimipour S, Litichever-Coslovsky N, Alaluf M, Freeman D, Ehrenberg B, Weiner L, Mazur Y, Fridkin M, Koch Y. Novel Methyl Helianthrones as Photosensitizers: Synthesis and Biological Evaluation¶. Photochem Photobiol 2007. [DOI: 10.1111/j.1751-1097.2005.tb00182.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mikes J, Kleban J, Sacková V, Horváth V, Jamborová E, Vaculová A, Kozubík A, Hofmanová J, Fedorocko P. Necrosis predominates in the cell death of human colon adenocarcinoma HT-29 cells treated under variable conditions of photodynamic therapy with hypericin. Photochem Photobiol Sci 2007; 6:758-66. [PMID: 17609769 DOI: 10.1039/b700350a] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photodynamic therapy (PDT) represents a new rapidly-developing anticancer approach based on administration of a non- or weakly-toxic photosensitizer and its activation with light of appropriate wavelength. Hypericin, one of the promising photosensitizers, is known to induce apoptosis with high efficiency in various cell line models. However, here we report the prevalence of necrosis accompanied by suppression of caspase-3 activation in colon adenocarcinoma HT-29 cells exposed to an extensive range of PDT doses evoked by variations in two variables -- hypericin concentration and light dose. Necrosis was the principal mode of cell death despite different PDT doses and the absence of anti-apoptotic Bcl-2 expression, even if the same condition induced caspase-3 activity at similar toxicity in HeLa cells. Introduction of Bcl-2 into HT-29 cells invoked caspase-3 activation, changed the Bcl-X(L) expression pattern, increased the apoptosis ratio with no effect on overall toxicity, and supported arrest in the G(2)/M-phase of cell cycle. Since it is known that Bcl-2 suppression in HT-29 is reversible and linked to the over-expression of mutated p53 and also considering our data, we suggest that the mutation in p53 and events linked to this feature may play a role in cell death signalling in HT-29 colon cancer cells.
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Affiliation(s)
- Jaromír Mikes
- Institute of Biology and Ecology, Faculty of Science, P J Safárik University, Moyzesova 11, 040 01, Kosice, Slovak Republic
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Stefflova K, Chen J, Marotta D, Li H, Zheng G. Photodynamic therapy agent with a built-in apoptosis sensor for evaluating its own therapeutic outcome in situ. J Med Chem 2006; 49:3850-6. [PMID: 16789741 DOI: 10.1021/jm060146u] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Identifying the extent of apoptosis in cells or tissues after cancer therapy in real time would be a powerful firsthand tool for assessing therapeutic outcome. We combined therapeutic and imaging functions in one agent, choosing photodynamic therapy (PDT) as an appropriate cancer treatment modality. This agent induces photodamage in irradiated cells and simultaneously identifies apoptotic cells by near-infrared fluorescence. This photodynamic therapy agent with a built-in apoptosis sensor (PDT-BIAS) contains a fluorescent photosensitizer used as an anticancer drug, connected to a fluorescence quencher by a caspase-3 cleavable peptide linker. We demonstrated that cleavage of the peptide linker by caspase-3, one of the executioner caspases involved in apoptosis, results in a detectable increase of fluorescence in solution and in cancer cells after PDT treatment. The apoptosis involvement and drug effectiveness were confirmed by Apoptag and cell viability (MTT) assays supporting the ability of PDT-BIAS to induce and image apoptosis in situ.
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Affiliation(s)
- Klara Stefflova
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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Lavie G, Mandel M, Hazan S, Barliya T, Blank M, Grunbaum A, Meruelo D, Solomon A. Anti-angiogenic activities of hypericin in vivo: potential for ophthalmologic applications. Angiogenesis 2005; 8:35-42. [PMID: 16132616 DOI: 10.1007/s10456-005-3828-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2004] [Accepted: 03/15/2005] [Indexed: 10/25/2022]
Abstract
Hypericin, a perihydroxylated dianthraquinone is shown here to be a highly potent inhibitor of angiogenesis in several ocular models examined in rat eyes. Extensive angiogenesis induced in the cornea and iris by intra-ocular administration of FGF-2 was effectively inhibited by a minimum of four dose regimens of hypericin (2 mg/kg) administered via the intraperitoneal route at 48 h intervals. Maximal inhibition was achieved when animal treatment with hypericin was initiated 48 h prior to inoculation of FGF-2. The molecular basis for the hypericin-mediated inhibition of angiogenesis in the anterior eye compartment appears to involve several sites in the cascade leading to angiogenesis. We show that the activating phosphorylation of extracellular signal-regulated MAP kinases (ERK1/2) is inhibited by hypericin in human retinal pigment epithelial cells and in EA.hy926 cells, an endothelial hybridoma expressing endothelial cell properties. ERK1/2 activity is required for the transactivation of hypoxia-inducible factor 1 alpha (HIF-1alpha) and in VEGF-induced blood vessel sprouting. MT1-MMP activity in human microvascular endothelial cells was also inhibited. The findings identify hypericin as a potentially useful agent in the treatment of ophthalmic neovascularization pathogeneses.
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Affiliation(s)
- Gad Lavie
- Institute of Hematology & Blood Transfusion Center, Sheba Medical Center, 52621, Tel-Hashomer, Israel.
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Weinberger D, Ron Y, Lusky M, Gaaton D, Orenstein A, Blank M, Mandel M, Livnat T, Barliya T, Lavie G. Competitive quenching: a possible novel approach in protecting RPE cells from damage during PDT. Curr Eye Res 2005; 30:269-77. [PMID: 16020257 DOI: 10.1080/02713680590927597] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE The purpose of this study is to demonstrate feasibility of using our novel concept, termed competitive quenching, for protecting the choroidal extravascular compartment and retinal pigment epithelium (RPE) from verteporfin (VP)-induced phototoxicity using hypericin. Furthermore, we aim to achieve partitioning of the quencher, hypericin, in the extravascular space and VP within the microvascular compartment of the chorio-retinal complex in vivo. METHODS We protect RPE cells from damage inflicted by photoactivated VP by introducing hypericin into these cells prior to photosensitization to quench the photosensitizing activity of VP. Cell protection levels were measured by MTT and Hemacolor viability assays. Wavelength range used for VP photoexcitation (700 +/- 40 nm) excludes the absorption range of hypericin, preventing the latter from photoactivation. Pharmacokinetic conditions, in which hypericin spreads throughout the choroidal and retinal extravascular space while VP is confined to the vasculature, are delineated using double-fluorescence imaging. RESULTS Cell viability increased 3- to 5-fold when 10-20 microM hypericin were present in RPE cells during photosensitization with 0.1-0.5 microM VP. VP fluorescence intensity was unchanged by the presence of hypericin in the cells. Hypericin administered intravenously to rats was confined to the choroidal vasculature after 15 min to 2 hr. Subsequently, hypericin partitioned to the choroidal and retinal extravascular space. VP administered at this time was confined to the microvasculature. CONCLUSIONS RPE and choroid may potentially be protected by compartmentalizing hypericin to the extravascular compartment while VP administered shortly before photosensitization is confined to the microvasculature. Adverse photodynamic therapy (PDT) damage to choroidal tissues adjacent to neovasculature targeted for photoablation have the potential of being prevented by competitive quenching with hypericin.
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Affiliation(s)
- Dov Weinberger
- Department of Ophthalmology, Beilinson Medical Center, Tel-Aviv University School of Medicine, Tel Aviv, Israel
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Rancan F, Wiehe A, Nöbel M, Senge MO, Omari SA, Böhm F, John M, Röder B. Influence of substitutions on asymmetric dihydroxychlorins with regard to intracellular uptake, subcellular localization and photosensitization of Jurkat cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2005; 78:17-28. [PMID: 15629245 DOI: 10.1016/j.jphotobiol.2004.08.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2004] [Revised: 08/12/2004] [Accepted: 08/24/2004] [Indexed: 10/26/2022]
Abstract
The search for new efficient sensitizers for photodynamic therapy (PDT) points to improve photophysical properties like absorption in the red region and singlet oxygen quantum yield as well as to control the localization of the sensitizer within the tumour cell. Depending on their physicochemical properties and their uptake mechanism, sensitizers can reach different intracellular concentrations and localize in different subcellular compartments. Moreover, the preferential localization of a sensitizer in target organelles, like mitochondria or lysosomes, could determine the cell death mechanism after PDT. This study aimed to investigate the influence of substitutions on dihydroxychlorins with regard to intracellular uptake, subcellular localization and cell death pathway. Moreover, the effect of a liposome-based delivery system was tested. The intracellular uptake was found to be strictly dependent on the sensitizer molecular structure and the means of its delivery. The most polar sensitizer in this study (compound 3) had, depending on incubation time, an intracellular concentration 2-8 times higher than the unsubstituted chlorin 1. All investigated photosensitizers localize predominantly in lysosomes but after longer incubation times weak fluorescence intensity was also detected in mitochondria and Golgi apparatus. The cell death pathway was found to be influenced by the sensitizer intracellular concentration and the applied light doses. In general, the increasing amphiphilicity of the sensitizer molecules is correlated with an increased sensitizer uptake and an increased rate of necrotic cells after irradiation.
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Affiliation(s)
- Fiorenza Rancan
- Institut für Physik, Photobiophysik, Humboldt Universität, Newtonstr. 15, D-12489 Berlin, Germany
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Laggner H, Schmid S, Goldenberg H. Hypericin and photodynamic treatment do not interfere with transport of vitamin C during respiratory burst. Free Radic Res 2005; 38:1073-81. [PMID: 15512795 DOI: 10.1080/10715760412331284780] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Hypericin is a photosensitizing pigment found in St. John's wort (Hypericum perforatum) displaying a high toxicity towards certain tumors. The fact that some non-tumor cells, especially monocytes and granulocytes, are resistant to its photocytotoxic effects, posed the question whether this insensitivity is due to their ability to accumulate vitamin C, an antioxidant which alleviates the deleterious work of free radicals. HL-60 promyelocytic tumor cells can be differentiated to neutrophilic granulocytes by treatment with dimethylsulfoxide and were used as cell model. In the differentiated cells, treatment with phorbol esters (PMA) stimulates vitamin C (ascorbate) transport. The uptake rates were unaltered by hypericin at concentrations below 1 microM and irradiation with visible light at a light dose of 6 J/cm2. Inhibition by higher concentrations of hypericin was most probably due to a combination of photocytotoxic properties of the dye and oxygen radicals generated during respiratory burst. Superoxide production by NADPH oxidase followed by reduction of ferricytochrome c was inhibited by hypericin. The degree of inhibition was dependent on the concentration of hypericin and light intensity: IC50-values were 1.7 and 0.7 microM under light doses of 3.6 and 10.8 J/cm2, respectively. Oxidative stress, monitored with 2',7'-dichlorofluorescein (DCF) was only slightly decreased by ascorbate even at higher concentrations of hypericin. In contrast to its effect on the ferricytochrome c-reduction, irradiation had no significant influence on DCF-fluorescence. However, the viability of the cells was strongly decreased after photosensitization and no significant improvement was obtained by ascorbate. Results from this work indicate that ascorbate transport per se is not altered during photodynamic therapy and vitamin C does not interfere with hypericin-induced photodamage of cellular targets.
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Affiliation(s)
- Hildegard Laggner
- Department of Medical Chemistry, Medical University of Vienna, Währinger Strasse 10, A-1090 Vienna, Austria.
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Mayr GW, Windhorst S, Hillemeier K. Antiproliferative plant and synthetic polyphenolics are specific inhibitors of vertebrate inositol-1,4,5-trisphosphate 3-kinases and inositol polyphosphate multikinase. J Biol Chem 2005; 280:13229-40. [PMID: 15659385 DOI: 10.1074/jbc.m500545200] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Inositol-1,4,5-trisphosphate 3-kinases (IP3K) A, B, and C as well as inositol polyphosphate multikinase (IPMK) catalyze the first step in the formation of the higher phosphorylated inositols InsP5 and InsP6 by metabolizing Ins(1,4,5)P3 to Ins(1,3,4,5)P4. In order to clarify the special role of these InsP3 phosphorylating enzymes and of subsequent anabolic inositol phosphate reactions, a search was conducted for potent enzyme inhibitors starting with a fully active IP3K-A catalytic domain. Seven polyphenolic compounds could be identified as potent inhibitors with IC50 < 200 nM (IC50 given): ellagic acid (36 nM), gossypol (58 nM), (-)-epicatechin-3-gallate (94 nM), (-)-epigallocatechin-3-gallate (EGCG, 120 nM), aurintricarboxylic acid (ATA, 150 nM), hypericin (170 nM), and quercetin (180 nM). All inhibitors displayed a mixed-type inhibition with respect to ATP and a non-competitive inhibition with respect to Ins(1,4,5)P3. Examination of these inhibitors toward IP3K-A, -B, and -C and IPMK from mammals revealed that ATA potently inhibits all kinases while the other inhibitors do not markedly affect IPMK but differentially inhibit IP3K isoforms. We identified chlorogenic acid as a specific IPMK inhibitor whereas the flavonoids myricetin, 3',4',7,8-tetrahydroxyflavone and EGCG inhibit preferentially IP3K-A and IP3K-C. Mutagenesis studies revealed that both the calmodulin binding and the ATP [corrected] binding domain in IP3K are involved in inhibitor binding. Their absence in IPMK and the presence of a unique insertion in IPMK were found to be important for selectivity differences from IP3K. The fact that all identified IP3K and IPMK inhibitors have been reported as antiproliferative agents and that IP3Ks or IPMK often are the best binding targets deserves further investigation concerning their antitumor potential.
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Affiliation(s)
- Georg W Mayr
- Institut für Biochemie und Molekularbiologie I: Zelluläre Signaltransduktion, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, D-20246 Hamburg, Germany.
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van Steensel MAM. Why minocycline can cause systemic lupus - a hypothesis and suggestions for therapeutic interventions based on it. Med Hypotheses 2005; 63:31-4. [PMID: 15193343 DOI: 10.1016/j.mehy.2003.12.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2003] [Accepted: 12/03/2003] [Indexed: 10/26/2022]
Abstract
The tetracycline antibiotic minocycline is widely used in dermatology, but can sometimes cause systemic lupus erythematodes, a serious autoimmune disorder. It is not known how it does this. However, recent data suggest that minocycline can protect cells from apoptosis by inhibition of caspase-dependent and independent cell death pathways. Here, it is suggested that this ability of minocycline is responsible for the induction of lupus. This idea is based on the recent insight that incomplete or failed apoptosis of damaged cells, particularly keratinocytes, may be responsible for the development of auto-immunity. The protection against apoptosis as conferred by minocyclin may be incomplete, with failed apoptosis and development of autoimmunity as a result. Experimental confirmation of the theory may be obtained by in vitro experiments using induction of apoptosis in cell types known to be affected by lupus. Next, mice that are sensitive to apoptosis may be used for in vivo experiments. Novel therapeutic approaches to drug-induced lupus may be based on induction of apoptosis; DNA-damaging immunosuppressive agents appear particularly useful. Such treatments can be tested in apoptosis-deficient mice that develop autoimmune disease.
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Affiliation(s)
- M A M van Steensel
- Department of Dermatology, University Hospital Maastricht, Maastricht, The Netherlands.
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Rahimipour S, Litichever-Coslovsky N, Alaluf M, Freeman D, Ehrenberg B, Weiner L, Mazur Y, Fridkin M, Koch Y. Novel Methyl Helianthrones as Photosensitizers: Synthesis and Biological Evaluation¶. Photochem Photobiol 2005. [DOI: 10.1562/2004-07-14-ra-234.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Photodynamic therapy for pancreatic carcinoma: experimental and clinical studies. Photodiagnosis Photodyn Ther 2004; 1:145-55. [DOI: 10.1016/s1572-1000(04)00038-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2004] [Revised: 07/28/2004] [Accepted: 07/28/2004] [Indexed: 01/03/2023]
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Blank M, Lavie G, Mandel M, Hazan S, Orenstein A, Meruelo D, Keisari Y. Antimetastatic activity of the photodynamic agent hypericin in the dark. Int J Cancer 2004; 111:596-603. [PMID: 15239139 DOI: 10.1002/ijc.20285] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A unique property of the photodynamic signal transduction inhibitor hypericin (HY) is high functionality in the dark, which has been shown to result in portfolio of anticancer activities both in vitro and in vivo. Here we show that treatment with HY significantly reduces growth rate of metastases in 2 murine models: breast adenocarcinoma (DA3) and squamous cell carcinoma (SQ2). Focus on metastases was achieved by resection of primary tumors at stages in which micrometastases exist in lungs. Long-term animal survival in DA3 tumor-excised groups increased from 15.6% in controls to 34.5% following supplementary treatment with HY. In mice bearing SQ2 tumor metastases, therapy with HY increased animal survival from 17.7% in controls to 46.1%. Using Laser-induced fluorescence and multipixel spectral image analyses, we demonstrate that HY has a high tendency to accumulate in primary and metastatic tumors; HY content in lungs bearing metastases was approximately 2-fold higher than in the lungs of healthy animals. The tendency of HY to preferentially concentrate in lung metastases, combined with its potent antiproliferative activities, may render HY as a useful supplementary modality in the treatment of metastatic cancer irrespective of photoactivation.
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Affiliation(s)
- Michael Blank
- Department of Human Microbiology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
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Heinzelmann-Schwarz V, Fedier A, Hornung R, Walt H, Haller U, Fink D. Role of p53 and ATM in photodynamic therapy-induced apoptosis. Lasers Surg Med 2004; 33:182-9. [PMID: 12949948 DOI: 10.1002/lsm.10213] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND AND OBJECTIVES Photodynamic therapy (PDT) induces cell death through a laser light-activated photosensitizer and is a treatment option for tumors resistant to radio- and chemo-therapy. STUDY DESIGN/MATERIALS AND METHODS We investigated whether m-THPC-PDT induces cell death by necrosis and/or apoptosis, and whether these responses are modulated by p53 and/or ATM, two cancer-associated genes. Sensitivity of atm(+/+)p53(+/+), atm(+/+)p53(-/-), and atm(-/-)p53(-/-) mouse embryonic fibroblasts to m-THPC-PDT performed at a wavelength of 652 nm was determined by the MTT assay, trypan blue-exclusion, and the TUNEL and caspase3-cleavage apoptosis assays. c-Abl protein level was determined by immunoblotting. RESULTS m-THPC-PDT rapidly induced cell death in a substantial fraction of cells by p53- and Ataxia telangiectasia mutated (ATM)-independent non-apoptotic processes. However, in the subset of apoptotic cells, apoptosis was reduced by loss of p53 and was even more reduced by the additional loss of ATM. Apoptosis correlated inversely with c-Abl level. CONCLUSIONS p53 and ATM are not required for necrosis, but may be required for PDT-mediated apoptosis.
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Affiliation(s)
- Viola Heinzelmann-Schwarz
- Department of Obstetrics and Gynecology, Division of Gynecology, University Hospital of Zurich, 8091 Zurich, Switzerland
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