1
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Kessel D. Annals of photodynamic therapy: Publish and/or perish? Photodiagnosis Photodyn Ther 2024:104265. [PMID: 38964697 DOI: 10.1016/j.pdpdt.2024.104265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2024] [Accepted: 07/01/2024] [Indexed: 07/06/2024]
Abstract
The current situation with regard to journal publishing is markedly different from the days when everything was done by mail and subscriptions paid the costs. In even earlier times, i.e., the era of Darwin, scientists tended to publish their findings in book form only after prolonged investigations. Now, publishing is Big Business, scavengers troll the internet for evidence of questionable data to report, significant numbers of CHF can be exchanged for access to journals and reviewing can be hazardous. In the era of the internet, the appearance of a report with significant errors missed by reviewers can lead to 'publish AND perish'.
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Affiliation(s)
- David Kessel
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA.
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2
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Lu X, Jia J, Wang Z, Wang W. MXene/Carbon Dots Nanozyme Composites for Glutathione Detection and Tumor Therapy. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1090. [PMID: 38998695 PMCID: PMC11243324 DOI: 10.3390/nano14131090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 06/21/2024] [Accepted: 06/22/2024] [Indexed: 07/14/2024]
Abstract
Co-N-CDs-based MXene nanocomposites (MXene@PDA/Co-N-CDs) were constructed by decorating Co-N-CDs on polydopamine-functionalized MXene nanosheets. Both Co-N-CDs and MXene nanosheets have peroxidase-like activity; when the two materials are combined to form MXene@PDA/Co-N-CDs nanocomposites, the peroxide-like activity can be further enhanced. MXene@PDA/Co-N-CDs could oxidize the substrate 3,3'5,5'-tetramethylbenziline (TMB) to form ox-TMB, as confirmed by detecting the absorption of the blue products. A highly selective colorimetric biosensor was developed for the determination of glutathione (GSH) in the concentration range of 0.3 to 20 µM with a lower detection limit (LOD) of 0.12 µM, which realized the accurate detection of GSH in human serum and urine samples. Moreover, in the tumor microenvironment, MXene@PDA/Co-N-CDs could catalyze hydrogen peroxide to produce hydroxyl free radicals and produce a photothermal effect under the exposure of NIR-I irradiation. The catalytic activity of MXene@PDA/Co-N-CD nanocomposites was fully achieved for the death of cancer cells through photothermal/photodynamic synergistic therapy. The MXene@PDA/Co-N-CDs nanozyme offers multiple applications in GSH detection and tumor therapy.
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Affiliation(s)
| | | | | | - Wenjing Wang
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center of Qingdao University, Qingdao University, Qingdao 266071, China; (X.L.); (J.J.); (Z.W.)
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3
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Overchuk M, Rickard BP, Tulino J, Tan X, Ligler FS, Huang HC, Rizvi I. Overcoming the effects of fluid shear stress in ovarian cancer cell lines: Doxorubicin alone or photodynamic priming to target platinum resistance. Photochem Photobiol 2024. [PMID: 38849970 DOI: 10.1111/php.13967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 04/15/2024] [Accepted: 05/05/2024] [Indexed: 06/09/2024]
Abstract
Resistance to platinum-based chemotherapies remains a significant challenge in advanced-stage high-grade serous ovarian carcinoma, and patients with malignant ascites face the poorest outcomes. It is, therefore, important to understand the effects of ascites, including the associated fluid shear stress (FSS), on phenotypic changes and therapy response, specifically FSS-induced chemotherapy resistance and the underlying mechanisms in ovarian cancer. This study investigated the effects of FSS on response to cisplatin, a platinum-based chemotherapy, and doxorubicin, an anthracycline, both of which are commonly used to manage advanced-stage ovarian cancer. Consistent with prior research, OVCAR-3 and Caov-3 cells cultivated under FSS demonstrated significant resistance to cisplatin. Examination of the role of mitochondria revealed an increase in mitochondrial DNA copy number and intracellular ATP content in cultures grown under FSS, suggesting that changes in mitochondria number and metabolic activity may contribute to platinum resistance. Interestingly, no resistance to doxorubicin was observed under FSS, the first such observation of a lack of resistance under these conditions. Finally, this study demonstrated the potential of photodynamic priming using benzoporphyrin derivative, a clinically approved photosensitizer that localizes in part to mitochondria and endoplasmic reticula, to enhance the efficacy of cisplatin, but not doxorubicin, thereby overcoming FSS-induced platinum resistance.
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Affiliation(s)
- Marta Overchuk
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, North Carolina, USA
| | - Brittany P Rickard
- Curriculum in Toxicology & Environmental Medicine, University of North Carolina School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Justin Tulino
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, North Carolina, USA
| | - Xianming Tan
- Department of Biostatistics, University of North Carolina School of Public Health, Chapel Hill, North Carolina, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Frances S Ligler
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas, USA
| | - Huang-Chiao Huang
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA
- Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Imran Rizvi
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Chapel Hill, North Carolina, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
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4
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Kessel D. Annals of photodynamic therapy: Publish and/or Perish? Photodiagnosis Photodyn Ther 2024:104233. [PMID: 38848884 DOI: 10.1016/j.pdpdt.2024.104233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2024] [Accepted: 06/05/2024] [Indexed: 06/09/2024]
Abstract
The current situation with regard to journal publishing is markedly different from the days when everything was done by mail and subscriptions paid the costs. In even earlier times, i.e., the era of Darwin, scientists tended to publish their findings in book form only after prolonged investigations. Now, publishing is Big Business, scavengers troll the internet for evidence of questionable data to report, significant numbers of CHF can be exchanged for access to journals and reviewing can be hazardous. In the era of the internet, appearance of a report with significant errors missed by reviewers can lead to 'publish AND perish'.
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Affiliation(s)
- David Kessel
- Department of Pharmacology, Wayne State University School of Michigan, Detroit, MI, 48201, USA.
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5
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Kessel D. Critical PDT theory: Viability, cytotoxicity, proliferation and clonogenicity-Is there a difference? Photochem Photobiol 2024; 100:453-454. [PMID: 37485914 DOI: 10.1111/php.13842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/05/2023] [Accepted: 07/13/2023] [Indexed: 07/25/2023]
Abstract
Comparison of MTT versus clonogenic effects of photodynamic therapy in MCF-7c3 breast cancer cells in culture. Left: MTT data; right clonogenic data. A collection of photosensitizers was used to produce these results.
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Affiliation(s)
- David Kessel
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, Michigan, USA
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Belashov AV, Zhikhoreva AA, Gorbunova IA, Sasin ME, Semenova IV, Vasyutinskii OS. Photophysical, rotational and translational properties of Radachlorin photosensitizer upon binding to serum albumins. Biochim Biophys Acta Gen Subj 2024; 1868:130546. [PMID: 38141885 DOI: 10.1016/j.bbagen.2023.130546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/12/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023]
Abstract
INTRODUCTION Although photophysical properties of Radachlorin photosensitizer (PS) were extensively studied in solutions and cells, no data is available on variations of its characteristics upon binding to serum albumins, which are major transporters in blood and nutrients in cell culture media. OBJECTIVES The primary objective of this study was to analyze changes in photophysical properties of Radachlorin molecules upon their binding to human and bovine serum albumins at different microenvironment properties. METHODS Experiments were performed using time-resolved fluorescence spectroscopy and fluorescence recovery after photobleaching. Variations in fluorescence spectra and lifetime, fluorescence anisotropy, rotational and translational diffusion of PS molecules upon binding to albumins were studied in normal, basic and acidic conditions and at different concentrations of albumin and PS molecules. RESULTS Radachlorin molecules effectively bind to both types of serum albumins, which causes changes in photophysical properties of the PS. A minor red shift of the fluorescence spectrum, an increase in fluorescence lifetime and anisotropy and substantial decrease of translational and rotational mobility of PS molecules were observed upon their binding to albumins. The analysis of rotational diffusion time provided robust evaluation of the bound fraction of PS molecules. Both the highly acidic microenvironment and increase in alcohol concentration above 40% resulted in detachment of PS molecules from albumins. Photophysical properties of Radachlorin in complexes with BSA and HSA were found to be slightly different. CONCLUSIONS Binding of Radachlorin photosensitizer to either BSA or HSA affects significantly its photophysical properties, which may also vary with microenvironment acidity and alcohol concentration.
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Affiliation(s)
- A V Belashov
- Ioffe Institute, 26, Polytekhnicheskaya, St.Petersburg 194021, Russia
| | - A A Zhikhoreva
- Ioffe Institute, 26, Polytekhnicheskaya, St.Petersburg 194021, Russia
| | - I A Gorbunova
- Ioffe Institute, 26, Polytekhnicheskaya, St.Petersburg 194021, Russia
| | - M E Sasin
- Ioffe Institute, 26, Polytekhnicheskaya, St.Petersburg 194021, Russia
| | - I V Semenova
- Ioffe Institute, 26, Polytekhnicheskaya, St.Petersburg 194021, Russia.
| | - O S Vasyutinskii
- Ioffe Institute, 26, Polytekhnicheskaya, St.Petersburg 194021, Russia
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Kessel D. Photodynamic therapy: Critical PDT theory IX-Translational efforts. Photochem Photobiol 2023. [PMID: 37811552 DOI: 10.1111/php.13867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/27/2023] [Accepted: 09/29/2023] [Indexed: 10/10/2023]
Affiliation(s)
- David Kessel
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, Michigan, USA
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8
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Kessel D. Critical PDT Theory V: What it Takes. Photochem Photobiol 2023; 99:1053-1056. [PMID: 37431795 DOI: 10.1111/php.13743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 11/09/2022] [Indexed: 07/12/2023]
Abstract
First evidence for an apoptotic response to photodamage provided by Oleinick's group in 1991.
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Affiliation(s)
- David Kessel
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA
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9
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Kessel D. Critical PDT Theory VII: The Saga of Ruthenium. Photodiagnosis Photodyn Ther 2023:103615. [PMID: 37201769 DOI: 10.1016/j.pdpdt.2023.103615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/02/2023] [Accepted: 05/12/2023] [Indexed: 05/20/2023]
Abstract
Recent studies involving photosensitizing agents containing ruthenium (Ru) are interpreted as an indication that this approach might be useful for treatment of bladder cancer. The absorbance spectrum of such agents tends to be limited to wavelengths < 600 nm. While this can spare underlying tissues from photodamage, this will limit applications to instances where only a thin layer of malignant cells is present. Among the more potentially interesting results is a protocol that uses only Ru nanoparticles. Other issues in Ru-based photodynamic therapy are discussed including the limited absorbance spectrum, questions relating to methodology and a general lack of details concerning localization and death pathways.
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Affiliation(s)
- David Kessel
- Department of Pharmacology, School of Medicine, Wayne State University; Detroit, MI 48201 USA.
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10
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Rickard BP, Overchuk M, Obaid G, Ruhi MK, Demirci U, Fenton SE, Santos JH, Kessel D, Rizvi I. Photochemical Targeting of Mitochondria to Overcome Chemoresistance in Ovarian Cancer †. Photochem Photobiol 2023; 99:448-468. [PMID: 36117466 PMCID: PMC10043796 DOI: 10.1111/php.13723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 08/29/2022] [Indexed: 11/30/2022]
Abstract
Ovarian cancer is the most lethal gynecologic malignancy with a stubborn mortality rate of ~65%. The persistent failure of multiline chemotherapy, and significant tumor heterogeneity, has made it challenging to improve outcomes. A target of increasing interest is the mitochondrion because of its essential role in critical cellular functions, and the significance of metabolic adaptation in chemoresistance. This review describes mitochondrial processes, including metabolic reprogramming, mitochondrial transfer and mitochondrial dynamics in ovarian cancer progression and chemoresistance. The effect of malignant ascites, or excess peritoneal fluid, on mitochondrial function is discussed. The role of photodynamic therapy (PDT) in overcoming mitochondria-mediated resistance is presented. PDT, a photochemistry-based modality, involves the light-based activation of a photosensitizer leading to the production of short-lived reactive molecular species and spatiotemporally confined photodamage to nearby organelles and biological targets. The consequential effects range from subcytotoxic priming of target cells for increased sensitivity to subsequent treatments, such as chemotherapy, to direct cell killing. This review discusses how PDT-based approaches can address key limitations of current treatments. Specifically, an overview of the mechanisms by which PDT alters mitochondrial function, and a summary of preclinical advancements and clinical PDT experience in ovarian cancer are provided.
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Affiliation(s)
- Brittany P. Rickard
- Curriculum in Toxicology & Environmental Medicine, University of North Carolina School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Marta Overchuk
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; North Carolina State University, Raleigh, NC 27606, USA
| | - Girgis Obaid
- Department of Bioengineering, University of Texas at Dallas, Richardson TX 95080, USA
| | - Mustafa Kemal Ruhi
- Institute of Biomedical Engineering, Boğaziçi University, Istanbul, Turkey
| | - Utkan Demirci
- Canary Center at Stanford for Cancer Early Detection, Department of Radiology, Stanford University School of Medicine, Palo Alto, CA 94305, USA
| | - Suzanne E. Fenton
- Curriculum in Toxicology & Environmental Medicine, University of North Carolina School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Mechanistic Toxicology Branch, Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Janine H. Santos
- Mechanistic Toxicology Branch, Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - David Kessel
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Imran Rizvi
- Curriculum in Toxicology & Environmental Medicine, University of North Carolina School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; North Carolina State University, Raleigh, NC 27606, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
- Center for Environmental Health and Susceptibility, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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11
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Dick M, Jamal H, Liu YR, Celli JP, Lilge L. On the need for standardized reporting of photophysical parameters of in vitro photodynamic therapy studies. Photodiagnosis Photodyn Ther 2022; 41:103263. [PMID: 36587862 DOI: 10.1016/j.pdpdt.2022.103263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/22/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022]
Abstract
In vitro dose escalation experiments are one of the first gatekeepers in therapeutic evaluation and development. This also holds for evaluating novel photosensitizers (PS) and Photodynamic Therapy (PDT) co-therapies as needed to provide dose response guidelines before engaging in further pre-clinical studies. The dose needed to achieve 50% cell kill (LD50) is a standard metric to report the potency of a therapeutic agents that is widely accepted for single-drug therapies. In reporting results of PDT experiments, which involve delivery of both drug and light, it is inherently more complicated to identify such a convenient dose response metric that actually captures the larger space of treatment parameters. In addition to ubiquitous sources of biological variability that apply broadly in biomedical research, PDT treatment efficacy is determined by multiple key parameters that may or may not have been documented, including PS concentration and light fluence, where the latter is itself a function of the spectral properties of the light source used (often not described), not to mention dose rate, fractionation and other parameters that potentially vary between individual studies. It is impossible to compare results between two study when, for example one reports LD50 PS concentration without providing essential light dosimetry details. Motivated by this challenge in comparing outcomes and establishing reproducibility of in vitro PDT studies, we endeavored to perform a meta-analysis of the reporting of PDT results by converting, where possible, the disparately reported experimental details into a consistent metric that could be used to compare across studies. In this context we adopt here the number of photons absorbed by photosensitizers per unit volume to affect a 50% decline in cell survival as a standardized metric. By choosing this metric one can acknowledge the quantum-based generation of cytotoxins. While this metric does not cover every possible source of variability between any two studies, for a PS with known optical properties, this does encapsulate PS concentration as well as irradiance and spectral properties of light delivered. For the sake of focus we adopt this approach for study of reported results with two photosensitizers, Protoporphyrin IX, either synthesized in the cells by aminolevulinic acid or administered exogenously, and Chlorin e6. A literature search was performed to identify in vitro studies with these two photosensitizers and collect necessary information to calculate the absorbed photon LD50 threshold for each study. Only approximately 1/10 of the manuscripts reporting on in vitro studies provide the minimum required information to calculate the threshold values. While the majority of the determined threshold values are within a factor of 10, the range of threshold values spanned close to 7 orders of magnitude for both photosensitizers. To contrast with single-agent therapies, a similar exercise was performed for chemotherapeutic drugs targeting cellular mitosis or tyrosine kinase inhibitors resulted in an LD50 or IC50 range of 1-2 orders of magnitude, with LD50 or IC50 values for a single cell line being within a factor of 5. This review underscores challenges in the reporting of in vitro PDT efficacy. In many cases it takes considerable effort to extract the necessary methodology information to make meaningful comparison between PDT studies. Only when results between studies can be compared is it possible to begin to assess reproducibility which, as shown here, can be a major issue. Hence, guidelines need to be developed and enforced through the peer review process for meaningful reporting of preclinical PDT results in order for the most promising sensitizers and co-therapies to be identified and translated into the clinic.
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Affiliation(s)
- Madison Dick
- Princess Margaret Cancer Centre at University Health Network, Toronto, Ontario, Canada
| | - Hunain Jamal
- Princess Margaret Cancer Centre at University Health Network, Toronto, Ontario, Canada
| | - Yi Ran Liu
- Department of Physics, University of Massachusetts Boston, Boston, Massachusetts, USA
| | - Jonathan P Celli
- Department of Physics, University of Massachusetts Boston, Boston, Massachusetts, USA
| | - Lothar Lilge
- Princess Margaret Cancer Centre at University Health Network, Toronto, Ontario, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada.
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Anand S, Heusinkveld LE, Cheng CE, Lefatshe L, De Silva P, Hasan T, Maytin EV. Combination of 5-Fluorouracil with Photodynamic Therapy: Enhancement of Innate and Adaptive Immune Responses in a Murine Model of Actinic Keratosis. Photochem Photobiol 2022; 99:437-447. [PMID: 36039609 DOI: 10.1111/php.13706] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 08/19/2022] [Indexed: 11/29/2022]
Abstract
We previously showed that a combination of differentiation-inducing agents (5-fluorouracil, vitamin D3, or methotrexate) and aminolevulinate-based photodynamic therapy (PDT) improves clinical responses by enhancing protoporphyrin IX (PpIX) photosensitizer levels and cell death. Here, we show that in addition to its previously known effects, 5-fluorouracil (5FU) enhances PDT-induced tumor-regressing immunity. Murine actinic keratoses (AK) were treated with topical 5FU or vehicle for three days prior to ALA application, followed by blue light illumination (~417 nm). Lesions were harvested for time-course analyses of innate immune cell recruitment into lesions, i.e., neutrophils (Ly6G+) and macrophages (F4/80+), which peaked at 72 hours and 1 week post PDT, respectively, and was greater in 5FU treated lesions. Enhanced infiltration of activated T cells (CD3+) throughout the time course, and of cytotoxic T cells (CD8+) at 1 - 2 weeks post PDT, also occurred in 5FU treated lesions. 5FU pretreatment reduced the presence of cells expressing the immune checkpoint marker PD-1 at ~72 hours post PDT, favoring cytotoxic T cell activity. A combination of 5FU and PDT, each individually known to induce long-term tumor-targeting immune responses in addition to their more immediate effects on cancer cells, may synergize to provide better management of squamous precancers.
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Affiliation(s)
- Sanjay Anand
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.,Dermatology and Plastic Surgery Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.,Cleveland Clinic Lerner College of Medicine, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Lauren E Heusinkveld
- Cleveland Clinic Lerner College of Medicine, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Cheng-En Cheng
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Lefatshe Lefatshe
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA
| | - Pushpamali De Silva
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Tayyaba Hasan
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Edward V Maytin
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.,Dermatology and Plastic Surgery Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.,Cleveland Clinic Lerner College of Medicine, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.,Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, 02114, USA
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13
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Chen K, Hou J, Huang B, Xiao S, Li X, Sun H, Peng Y. Bromopropylate Imidazoliumyl Substituted Silicon Phthalocyanine for Mitochondria-Targeting, Two-Photon Imaging Guided in Vitro Photodynamic Therapy. Front Pharmacol 2022; 13:921718. [PMID: 35903336 PMCID: PMC9315426 DOI: 10.3389/fphar.2022.921718] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 06/07/2022] [Indexed: 11/13/2022] Open
Abstract
Maximization of phototoxic damage on tumor is essential for effective anticancer photodynamic therapy (PDT). Highly cancer-cell-organelle-specific delivery of efficient photosensitizers (PSs) in vitro and in vivo is in great demand. In this paper, a novel water-soluble mitochondria targeted cationic bromopropylate imidazoliumyl axially substituted silicon (IV) phthalocyanine (Br-ID-SiPc) is developed to improve PDT efficiency by enhancing the subcellular localization of photosensitizers. Benefiting from the targeting capability of bromopropylate imidazoliumyl, Br-ID-SiPc can selectively accumulate in mitochondria after cellular uptake, this process could be tracked by two-photon imaging. Br-ID-SiPc effectively damaged the circular plasmid DNA of mitochondria and induced HO-8910 cells apoptosis. Our results indicate that Br-ID-SiPc is a potential photosensitizer which can be used as a mitochondria-targeting and two-photon fluorescent imaging molecule for PDT of cancers.
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Affiliation(s)
- Kuizhi Chen
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials, Fujian Normal University, Fuzhou, China
| | - Jialin Hou
- Department of Breast Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Bingcheng Huang
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials, Fujian Normal University, Fuzhou, China
| | - Shuanghuang Xiao
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials, Fujian Normal University, Fuzhou, China
| | - Xia Li
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials, Fujian Normal University, Fuzhou, China
| | - Hong Sun
- Department of Pharmacy, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, Fuzhou, China
- *Correspondence: Hong Sun, ; Yiru Peng,
| | - Yiru Peng
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials, Fujian Normal University, Fuzhou, China
- *Correspondence: Hong Sun, ; Yiru Peng,
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14
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Development of Novel Tetrapyrrole Structure Photosensitizers for Cancer Photodynamic Therapy. Bioengineering (Basel) 2022; 9:bioengineering9020082. [PMID: 35200435 PMCID: PMC8868602 DOI: 10.3390/bioengineering9020082] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/19/2022] [Accepted: 01/24/2022] [Indexed: 11/18/2022] Open
Abstract
The effectiveness of photodynamic therapy (PDT) is based on the triad effects of photosensitizer (PS), molecular oxygen and visible light on malignant tumors. Such complex induces a multifactorial manner including reactive-oxygen-species-mediated damage and the killing of cells, vasculature damage of the tumor, and activation of the organism immunity. The effectiveness of PDT depends on the properties of photosensitizing drugs, their selectivity, enhanced photoproduction of reactive particles, absorption in the near infrared spectrum, and drug delivery strategies. Photosensitizers of the tetrapyrrole structure (porphyrins) are widely used in PDT because of their unique diagnostic and therapeutic functions. Nevertheless, the clinical use of the first-generation PS (sodium porfimer and hematoporphyrins) revealed difficulties, such as long-term skin photosensitivity, insufficient penetration into deep-seated tumors and incorrect localization to it. The second generation is based on different approaches of the synthesis and conjugation of porphyrin PS with biomolecules, which made it possible to approach the targeted PDT of tumors. Despite the fact that the development of the second-generation PS started about 30 years ago, these technologies are still in demand and are in intensive development, especially in the direction of improving the process of optimization split linkers responsive to input. Bioconjugation and encapsulation by targeting molecules are among the main strategies for developing of the PS synthesis. A targeted drug delivery system with the effect of increased permeability and retention by tumor cells is one of the ultimate goals of the synthesis of second-generation PS. This review presents porphyrin PS of various generations, discusses factors affecting cellular biodistribution and uptake, and indicates their role as diagnostic and therapeutic (theranostic) agents. New complexes based on porphyrin PS for photoimmunotherapy are presented, where specific antibodies are used that are chemically bound to PS, absorbing light from the near infrared part of the spectrum. Additionally, a two-photon photodynamic approach using third-generation photosensitizers for the treatment of tumors is discussed, which indicates the prospects for the further development of a promising method antitumor PDT.
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Farajzadeh N, Güler Kuşçulu N, Yenilmez HY, Bahar D, Altuntas Bayir Z. Anticancer and Biological Properties of New Axially Disubstituted Silicon Phthalocyanines. Dalton Trans 2022; 51:7539-7550. [DOI: 10.1039/d2dt01033j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study reports the synthesis of three novel axially disubstituted silicon phthalocyanines (1-3-Si) and their quaternized phthalocyanines (1-3-QSi). The resulting compounds were characterized by applying spectroscopic techniques including 1H NMR,...
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Liu K, Lei S, Kuang Y, Jin Q, Long D, Liu C, Jiang Y, Zhao H, Yao H. A Novel Mechanism of the c-Myc/NEAT1 Axis Mediating Colorectal Cancer Cell Response to Photodynamic Therapy Treatment. Front Oncol 2021; 11:652831. [PMID: 34395239 PMCID: PMC8355738 DOI: 10.3389/fonc.2021.652831] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 05/18/2021] [Indexed: 12/13/2022] Open
Abstract
Photodynamic therapy (PDT) is considered a potential treatment regimen for colorectal cancer cases (CRC). p53 signaling and the miR-124/iASPP axis play an essential role in the PDT resistance of CRC cells. PDT treatment downregulated NEAT1 expression in p53wt HCT116 and RKO cells. In these two cell lines, NEAT1 silencing enhanced the suppressive effects of PDT on cell viability and apoptosis. Within the subcutaneously implanted tumor model, NEAT1 silencing enhanced PDT-induced suppression on tumor growth. Regarding p53-deleted HCT116 cells, PDT only moderately affected cell proliferation but induced downregulation of NEAT1. NEAT1 directly targeted miR-124, acting as a ceRNA, competing with iASPP for miR-124 binding, and counteracting miR-124-mediated repression on iASPP under PDT treatment. NEAT1 silencing was enhanced, whereas miR-124 inhibition attenuated PDT effects on CRC cells; miR-124 inhibition significantly reversed the roles of NEAT1 silencing in PDT-treated CRC cells. miR-124 negatively correlated with NEAT1 and iASPP, respectively, whereas NEAT1 and iASPP positively correlated with each other. PDT downregulated c-Myc in CRC cells, and c-Myc activated the transcription of NEAT1 through the targeting of its promoter region. Within p53mut SW480 cells, PDT failed to alter cell viability and apoptosis but still downregulated c-Myc, NEAT1, and iASPP and upregulated miR-124. In p53 mutant high-abundant CRC tissues, c-Myc and NEAT1 were up-regulated, and miR-124 was downregulated. In c-Myc high-abundant CRC tissues, NEAT1 and iASPP were up-regulated, and miR-124 was downregulated. The critical role of the c-Myc/NEAT1 axis in mediating CRC response to PDT treatment via the miR-124/iASPP/p53 feedback loop was conclusively demonstrated.
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Affiliation(s)
- Kuijie Liu
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Sanlin Lei
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yong Kuang
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Qianqian Jin
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Dongju Long
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Chao Liu
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yuhong Jiang
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hua Zhao
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hongliang Yao
- Department of Gastroenterology, The Second Xiangya Hospital, Central South University, Changsha, China
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Göksel M, Durmuş M, Biyiklioglu Z. Synthesis and photodynamic activities of novel silicon(iv) phthalocyanines axially substituted with water soluble groups against HeLa cancer cell line. Dalton Trans 2021; 50:2570-2584. [PMID: 33522544 DOI: 10.1039/d0dt03858j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, compounds 1 and 2, and their silicon(iv) phthalocyanine (SiPc) derivatives 3 and 4, which bear these ligands as substituents on the axial positions were synthesized. These SiPcs (3 and 4) were also converted to their water soluble derivatives (3a and 4a). All these novel compounds were fully characterized by a combination of spectroscopic data such as FT-IR, 1H-NMR, 13C-NMR and UV-vis as well as mass spectroscopy. The photophysicochemical properties (fluorescence quantum yields and lifetimes, singlet oxygen, and photodegradation quantum yields) were investigated in DMSO for all the studied SiPcs (3 and 4) and in both DMSO and aqueous solutions for the water soluble SiPcs (3a and 4a). Effects of quaternization of these phthalocyanines on photophysicochemical properties were also determined. The photodynamic therapy activities of the water soluble SiPcs (3a and 4a) were tested against to the HeLa cancer cell lines and these phthalocyanines exhibited cytotoxicity against these cell lines.
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Affiliation(s)
- Meltem Göksel
- Kocaeli University, Department of Chemistry, Umuttepe, 41380, Kocaeli, Turkey
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Kessel D, Reiners JJ. Photodynamic therapy: autophagy and mitophagy, apoptosis and paraptosis. Autophagy 2020; 16:2098-2101. [PMID: 32584644 PMCID: PMC7595601 DOI: 10.1080/15548627.2020.1783823] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/07/2020] [Accepted: 05/20/2020] [Indexed: 12/21/2022] Open
Abstract
Macroautophagy/autophagy can play a cytoprotective role after photodynamic damage to malignant cells, depending on the site of subcellular damage initiated by reactive oxygen species. There is evidence for such protection when mitochondria are among the targets. Targeting lysosomes has been reported to be more effective for photokilling, perhaps because autophagy offers no cytoprotection. Photodynamic damage to both lysosomes and mitochondria can, however, markedly enhance the overall level of photokilling. Two mechanisms have been proposed to account for this result. Lysosomal photodamage leads to the release of calcium ions, resulting in the activation of the protease CAPN (calpain). CAPN then cleaves ATG5 to a fragment (tATG5) capable of interacting with mitochondria to enhance pro-apoptotic signals. It has also been proposed that targeting lysosomes for photodynamic damage can impair mitophagy, a process that could mitigate the pro-apoptotic effects of mitochondrial targeting. The level of lysosomal photodamage required for suppression of mitophagy is unclear. The "tATG5 route" involves the catalytic action of CAPN, activated by a degree of lysosomal photodamage barely detectible by a viability assay. ER photodamage can also initiate paraptosis, a death pathway functional even in cell types with impaired apoptosis and apparently unaffected by autophagy. Abbreviations: ALLN: N-acetyl-Leu-Leu-norleucinal (cell-permeable inhibitor of calpain); ATG: autophagy related; BPD: benzoporphyrin derivative (Visudyne); ER: endoplasmic reticulum; EtNBS: 5-ethylamino-9-diethyl-aminobenzo[a]phenothiazinium chloride; MTT: a tetrazolium dye; NPe6: mono N-aspartyl chlorin e6; PDT: photodynamic therapy; ROS: reactive oxygen species.
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Affiliation(s)
| | - John J. Reiners
- Department of Pharmacology, School of Medicine
- Institute of Environmental Health Sciences, Wayne State University, Detroit, MI, USA
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De Silva P, Saad MA, Thomsen HC, Bano S, Ashraf S, Hasan T. Photodynamic therapy, priming and optical imaging: Potential co-conspirators in treatment design and optimization - a Thomas Dougherty Award for Excellence in PDT paper. J PORPHYR PHTHALOCYA 2020; 24:1320-1360. [PMID: 37425217 PMCID: PMC10327884 DOI: 10.1142/s1088424620300098] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Photodynamic therapy is a photochemistry-based approach, approved for the treatment of several malignant and non-malignant pathologies. It relies on the use of a non-toxic, light activatable chemical, photosensitizer, which preferentially accumulates in tissues/cells and, upon irradiation with the appropriate wavelength of light, confers cytotoxicity by generation of reactive molecular species. The preferential accumulation however is not universal and, depending on the anatomical site, the ratio of tumor to normal tissue may be reversed in favor of normal tissue. Under such circumstances, control of the volume of light illumination provides a second handle of selectivity. Singlet oxygen is the putative favorite reactive molecular species although other entities such as nitric oxide have been credibly implicated. Typically, most photosensitizers in current clinical use have a finite quantum yield of fluorescence which is exploited for surgery guidance and can also be incorporated for monitoring and treatment design. In addition, the photodynamic process alters the cellular, stromal, and/or vascular microenvironment transiently in a process termed photodynamic priming, making it more receptive to subsequent additional therapies including chemo- and immunotherapy. Thus, photodynamic priming may be considered as an enabling technology for the more commonly used frontline treatments. Recently, there has been an increase in the exploitation of the theranostic potential of photodynamic therapy in different preclinical and clinical settings with the use of new photosensitizer formulations and combinatorial therapeutic options. The emergence of nanomedicine has further added to the repertoire of photodynamic therapy's potential and the convergence and co-evolution of these two exciting tools is expected to push the barriers of smart therapies, where such optical approaches might have a special niche. This review provides a perspective on current status of photodynamic therapy in anti-cancer and anti-microbial therapies and it suggests how evolving technologies combined with photochemically-initiated molecular processes may be exploited to become co-conspirators in optimization of treatment outcomes. We also project, at least for the short term, the direction that this modality may be taking in the near future.
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Affiliation(s)
- Pushpamali De Silva
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Mohammad A. Saad
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Hanna C. Thomsen
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Shazia Bano
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Shoaib Ashraf
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Tayyaba Hasan
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
- Division of Health Sciences and Technology, Harvard University and Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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20
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Abrahamse H, Houreld NN. Genetic Aberrations Associated with Photodynamic Therapy in Colorectal Cancer Cells. Int J Mol Sci 2019; 20:ijms20133254. [PMID: 31269724 PMCID: PMC6651415 DOI: 10.3390/ijms20133254] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 12/22/2022] Open
Abstract
Photodynamic therapy (PDT) is a cancer treatment modality that utilizes three components: light (λ 650-750 nm), a photosensitizer (PS) and molecular oxygen, which upon activation renders the modality effective. Colorectal cancer has one of the highest incident rates as well as a high mortality rate worldwide. In this study, a zinc (Zn) metal-based phthalocyanine (ZnPcSmix) PS was used to determine its efficacy for the treatment of colon adenocarcinoma cells (DLD-1 and Caco-2). Photoactivation of the PS was achieved by laser irradiation at a wavelength of 680 nm. Dose responses were performed to establish optimal PS concentration and irradiation fluence. A working combination of 20 µM ZnPcSmix and 5 J/cm2 was used. Biochemical responses were determined after 1 or 24 h incubation post-treatment. Since ZnPcSmix is localized in lysosomes and mitochondria, mitochondrial destabilization analysis was performed monitoring mitochondrial membrane potential (MMP). Cytosolic acidification was determined measuring hydrogen peroxide (H2O2) levels in the cytoplasm. Having established apoptotic cell death induction, an apoptosis PCR array was performed to establish the apoptotic mechanism. In DLD-1 cells, expression of genes included 3 up-regulated and 20 down-regulated genes while in Caco-2 cells, there were 16 up-regulated and 22 down-regulated genes. In both cell lines, in up-regulated genes, there was a combination of pro- and anti-apoptotic genes that were significantly expressed. Gene expression results showed that more tumorigenic cells (DLD-1) went through apoptosis; however, they exhibit increased risk of resistance and recurrence, while less tumorigenic Caco-2 cells responded better to PDT, thus being suggestive of a better prognosis post-PDT treatment. In addition, the possible apoptotic mechanisms of cell death were deduced based on the genetic expression profiling of regulatory apoptotic inducing factors.
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Affiliation(s)
- Heidi Abrahamse
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, Johannesburg 2028, South Africa.
| | - Nicolette Nadene Houreld
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, Johannesburg 2028, South Africa
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Velazquez FN, Miretti M, Baumgartner MT, Caputto BL, Tempesti TC, Prucca CG. Effectiveness of ZnPc and of an amine derivative to inactivate Glioblastoma cells by Photodynamic Therapy: an in vitro comparative study. Sci Rep 2019; 9:3010. [PMID: 30816179 PMCID: PMC6395748 DOI: 10.1038/s41598-019-39390-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 01/17/2019] [Indexed: 12/31/2022] Open
Abstract
Glioblastoma multiforme is considered to be one of the most aggressive types of tumors of the central nervous system, with a poor prognosis and short survival periods of ~ one year. The current protocol for glioblastoma treatment includes the surgical excision of the primary tumor followed by radio and chemotherapy. Photodynamic therapy (PDT) is considered a promising strategy for the treatment of several types of tumors. Phthalocyanines (Pcs) are good photosensitizers (PSs) for PDT because they induce cell death in several cellular models. ZnPc (Zn(II)phthalocyanine) is a well-known Pc, extensively tested in different cells and tumor models, but its evaluation on a glioblastoma model has been poorly studied. Herein, we compare the capacity of ZnPc and one of its derivatives, Zn(II)tetraminephthalocyanine (TAZnPc), to photoinactivate glioblastoma cells (T98G, MO59, LN229 and U87-MG) in culture. We measured the cellular uptake, the toxicity in the dark and the subcellular localization of the different Pcs, as well as the clonogenic capacity of surviving cells after PDT. The mechanism of cell death induced after PDT was determined by measuring caspase 3 activation, DNA fragmentation, phosphatidylserine externalization, mitochondrial morphological changes and loss of mitochondrial membrane potential as well as lysosomal membrane integrity. Overall, ZnPc and TAZnPc present good properties to be used as PSs with photoinactivation capacity on glioblastoma cells.
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Affiliation(s)
- Fabiola N Velazquez
- CIQUIBIC (CONICET), Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Mariana Miretti
- INFIQC (CONICET), Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Maria T Baumgartner
- INFIQC (CONICET), Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Beatriz L Caputto
- CIQUIBIC (CONICET), Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Tomas C Tempesti
- INFIQC (CONICET), Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina.
| | - César G Prucca
- CIQUIBIC (CONICET), Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina.
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Zhang Z, Yu HJ, Huang H, Wan B, Wu S, Liu HY, Zhang HT. The photocytotoxicity effect of cationic sulfonated corrole towards lung cancer cells: in vitro and in vivo study. Lasers Med Sci 2019; 34:1353-1363. [DOI: 10.1007/s10103-019-02725-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 01/15/2019] [Indexed: 11/24/2022]
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Kaleta-Richter M, Kawczyk-Krupka A, Aebisher D, Bartusik-Aebisher D, Czuba Z, Cieślar G. The capability and potential of new forms of personalized colon cancer treatment: Immunotherapy and Photodynamic Therapy. Photodiagnosis Photodyn Ther 2019; 25:253-258. [PMID: 30611864 DOI: 10.1016/j.pdpdt.2019.01.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/19/2018] [Accepted: 01/02/2019] [Indexed: 02/07/2023]
Abstract
INTRODUCTION PDT can interfere with cytokine-mediated responses that play an important role in the processes of cancer progression, tumor angiogenesis and metastasis. Therefore, based on the identification of these cancer biomarkers, the therapy of combining various forms of treatment, including immunotherapy and PDT, may be a justified strategy for colorectal cancer treatment that focuses on individualized comprehensive therapy. METHOD We reviewed the major approaches on the use of immunotherapy in colorectal cancer, with the special regard to photodynamic therapy, its immunological effect and new oncological treatment directions, connected with adjuvant immunotherapy including use of nanoparticles. Databases such as PubMed, ScienceDirect and Springer were utilized to search the literature for relevant articles. PURPOSE To review studies of the immunotherapy in colon cancer and immune response to PDT. CONCLUSION Based on the identification of immunological cancer biomarkers, the therapy of combining various forms of treatment, including immunotherapy and PDT, may be a justified strategy for colorectal cancer treatment that focuses on individualized comprehensive therapy.
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Affiliation(s)
- Marta Kaleta-Richter
- School of Medicine with the Division of Dentistry in Zabrze, Department of Internal Diseases, Angiology and Physical Medicine, Center for Laser Diagnostics and Therapy, Medical University of Silesia in Katowice, Batorego Street 15, 41-902 Bytom, Poland; School of Medicine with the Division of Dentistry in Zabrze, Department of Internal Medicine, Dermatology and Allergology, Medical University of Silesia in Katowice, Marii Curie - Skłodowskiej Street 10, 41-800 Zabrze, Poland.
| | - Aleksandra Kawczyk-Krupka
- School of Medicine with the Division of Dentistry in Zabrze, Department of Internal Diseases, Angiology and Physical Medicine, Center for Laser Diagnostics and Therapy, Medical University of Silesia in Katowice, Batorego Street 15, 41-902 Bytom, Poland.
| | - David Aebisher
- Department of Photomedicine and Physical Chemistry, Faculty of Medicine, University of Rzeszów, Tadeusza Rejtana Avenue 16 C, 35-310 Rzeszów, Poland.
| | - Dorota Bartusik-Aebisher
- Department of Biochemistry and General Chemistry, Faculty of Medicine, University of Rzeszów, Tadeusza Rejtana Avenue 16 C, 35-310 Rzeszów, Poland.
| | - Zenon Czuba
- School of Medicine with the Division of Dentistry in Zabrze, Department of Microbiology and Immunology, Medical University of Silesia in Katowice, 19 Jordana St., 41- 808 Zabrze, Poland.
| | - Grzegorz Cieślar
- School of Medicine with the Division of Dentistry in Zabrze, Department of Internal Diseases, Angiology and Physical Medicine, Center for Laser Diagnostics and Therapy, Medical University of Silesia in Katowice, Batorego Street 15, 41-902 Bytom, Poland.
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Okoth EA, Zhou Z, Ongarora B, Stutes A, Mathis JM, Vicente MGH. Synthesis and investigation of phthalocyanine-biotin conjugates. J PORPHYR PHTHALOCYA 2019; 23:125-135. [PMID: 33132689 PMCID: PMC7598017 DOI: 10.1142/s1088424619500056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
An isothiocyanato-functionalized phthalocyanine (Pc) was synthesized in good yield from the corresponding amine-substituted Pc. This Pc reacted with ethanolamine, biotin hydrazine, and biotin diethylamine under mild conditions (room temperature in DMF or DMSO in the presence of TEA) to produce the corresponding thiourea products in 60-75% yields. All Pcs showed intense Q absorptions in DMF around 677 nm, emissions centered at 683 nm, and fluorescence quantum yields in the range 0.18-0.27. The Pcs were phototoxic to human carcinoma HEp2 cells (IC50 ~ 7 at 1.5 J/cm2) and localized in multiple organelles, including the lysosomes, Golgi and ER. One biotin-Pc conjugate was injected via tail vein into nude mice bearing HT-29 tumors and demonstrated selective localization in the tumor tissue.
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Affiliation(s)
- Elizabeth A. Okoth
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Zehua Zhou
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Benson Ongarora
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Alyssa Stutes
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA
| | - J. Michael Mathis
- Department of Comparative Biomedical Sciences, Louisiana State University School of Veterinary Medicine, Baton Rouge Louisiana 70803, USA
| | - M. Graça H. Vicente
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA
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Schmidt J, Kuzyniak W, Berkholz J, Steinemann G, Ogbodu R, Hoffmann B, Nouailles G, Gürek AG, Nitzsche B, Höpfner M. Novel zinc‑ and silicon‑phthalocyanines as photosensitizers for photodynamic therapy of cholangiocarcinoma. Int J Mol Med 2018; 42:534-546. [PMID: 29693115 DOI: 10.3892/ijmm.2018.3620] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 03/09/2018] [Indexed: 11/05/2022] Open
Abstract
Photodynamic therapy (PDT) has emerged as an effective and minimally invasive cancer treatment modality. In the present study, two novel phthalocyanines, tetra‑triethyleneoxysulfonyl substituted zinc phthalocyanine (ZnPc) and dihydroxy‑2,9(10),16(17),23(24)‑tetrakis(4,7,10‑trioxaundecan‑1‑sulfonyl) silicon phthalocyanine (Pc32), were investigated as photosensitizers (PS) for PDT of cholangiocarcinoma (CC). ZnPc showed a pronounced dose‑dependent and predominantly cytoplasmic accumulation in EGI‑1 and TFK‑1 CC cell lines. Pc32 also accumulated in the CC cells, but this was less pronounced. Without photoactivation, the PS did not exhibit any antiproliferative or cytotoxic effects. Upon photoactivation, ZnPc induced the formation of reactive oxygen species (ROS) and immediate phototoxicity, leading to a dose‑dependent decrease in cell proliferation, and an induction of mitochondria‑driven apoptosis and cell cycle arrest of EGI‑1 and TFK‑1 cells. Although photoactivated Pc32 also induced ROS formation in the two cell lines, the extent was less marked, compared with that induced by ZnPc‑PDT, and pronounced antipoliferative effects occurred only in the less differentiated EGI‑1 cells, whereas the more differentiated TFK‑1 cells did not show sustained growth inhibition upon Pc32‑PDT induction. In vivo examinations on the antiangiogenic potency of the novel PS were performed using chorioallantoic membrane (CAM) assays, which revealed reduced angiogenic sprouting with a concomitant increase in nonperfused regions and degeneration of the vascular network of the CAM following induction with ZnPc‑PDT only. The study demonstrated the pronounced antiproliferative and antiangiogenic potency of ZnPc as a novel PS for PDT, meriting further elucidation as a promising PS for the photodynamic treatment of CC.
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Affiliation(s)
- Jacob Schmidt
- Institute of Physiology, Charité‑Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‑Universität zu Berlin, and Berlin Institute of Health, D‑10117 Berlin, Germany
| | - Weronika Kuzyniak
- Institute of Physiology, Charité‑Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‑Universität zu Berlin, and Berlin Institute of Health, D‑10117 Berlin, Germany
| | - Janine Berkholz
- Institute of Physiology, Charité‑Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‑Universität zu Berlin, and Berlin Institute of Health, D‑10117 Berlin, Germany
| | - Gustav Steinemann
- Institute of Physiology, Charité‑Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‑Universität zu Berlin, and Berlin Institute of Health, D‑10117 Berlin, Germany
| | - Racheal Ogbodu
- Institute of Physiology, Charité‑Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‑Universität zu Berlin, and Berlin Institute of Health, D‑10117 Berlin, Germany
| | - Björn Hoffmann
- Institute of Physiology, Charité‑Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‑Universität zu Berlin, and Berlin Institute of Health, D‑10117 Berlin, Germany
| | - Geraldine Nouailles
- Department of Infectious Diseases and Pulmonary Medicine, Charité‑Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‑Universität zu Berlin, and Berlin Institute of Health, D‑10117 Berlin, Germany
| | - Ayşe Gül Gürek
- Department of Chemistry, Gebze Technical University, Gebze, Kocaeli 41400, Turkey
| | - Bianca Nitzsche
- Institute of Physiology, Charité‑Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‑Universität zu Berlin, and Berlin Institute of Health, D‑10117 Berlin, Germany
| | - Michael Höpfner
- Institute of Physiology, Charité‑Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‑Universität zu Berlin, and Berlin Institute of Health, D‑10117 Berlin, Germany
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Kessel D, Oleinick NL. Cell Death Pathways Associated with Photodynamic Therapy: An Update. Photochem Photobiol 2018; 94:213-218. [PMID: 29143339 DOI: 10.1111/php.12857] [Citation(s) in RCA: 140] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 10/18/2017] [Indexed: 12/13/2022]
Abstract
Photodynamic therapy (PDT) has the potential to make a significant impact on cancer treatment. PDT can sensitize malignant tissues to light, leading to a highly selective effect if an appropriate light dose can be delivered. Variations in light distribution and drug delivery, along with impaired efficacy in hypoxic regions, can reduce the overall tumor response. There is also evidence that malignant cells surviving PDT may become more aggressive than the initial tumor population. Promotion of more effective direct tumor eradication is therefore an important goal. While a list of properties for the "ideal" photosensitizing agent often includes formulation, pharmacologic and photophysical elements, we propose that subcellular targeting is also an important consideration. Perspectives relating to optimizing PDT efficacy are offered here. These relate to death pathways initiated by photodamage to particular subcellular organelles.
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Affiliation(s)
- David Kessel
- Wayne State University School of Medicine, Detroit, MI
| | - Nancy L Oleinick
- Case Western Reserve University School of Medicine and the Case Comprehensive Cancer Center, Cleveland, OH
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Dichiara M, Prezzavento O, Marrazzo A, Pittalà V, Salerno L, Rescifina A, Amata E. Recent advances in drug discovery of phototherapeutic non-porphyrinic anticancer agents. Eur J Med Chem 2017; 142:459-485. [DOI: 10.1016/j.ejmech.2017.08.070] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 08/29/2017] [Accepted: 08/31/2017] [Indexed: 12/17/2022]
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28
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Tsubone TM, Martins WK, Pavani C, Junqueira HC, Itri R, Baptista MS. Enhanced efficiency of cell death by lysosome-specific photodamage. Sci Rep 2017; 7:6734. [PMID: 28751688 PMCID: PMC5532215 DOI: 10.1038/s41598-017-06788-7] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 06/19/2017] [Indexed: 11/08/2022] Open
Abstract
Mobilization of specific mechanisms of regulated cell death is a promising alternative to treat challenging illness such as neurodegenerative disease and cancer. The use of light to activate these mechanisms may provide a route for target-specific therapies. Two asymmetric porphyrins with opposite charges, the negatively charged TPPS2a and the positively charged CisDiMPyP were compared in terms of their properties in membrane mimics and in cells. CisDiMPyP interacts to a larger extent with model membranes and with cells than TPPS2a, due to a favorable electrostatic interaction. CisDiMPyP is also more effective than TPPS2a in damaging membranes. Surprisingly, TPPS2a is more efficient in causing photoinduced cell death. The lethal concentration on cell viability of 50% (LC50) found for TPPS2a was ~3.5 (raw data) and ~5 (considering photosensitizer incorporation) times smaller than for CisDiMPyP. CisDiMPyP damaged mainly mitochondria and triggered short-term phototoxicity by necro-apoptotic cell death. Photoexcitation of TPPS2a promotes mainly lysosomal damage leading to autophagy-associated cell death. Our data shows that an exact damage in lysosome is more effective to diminish proliferation of HeLa cells than a similar damage in mitochondria. Precisely targeting organelles and specifically triggering regulated cell death mechanisms shall help in the development of new organelle-target therapies.
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Affiliation(s)
| | - Waleska Kerllen Martins
- Instituto de Química, Universidade de São Paulo, São Paulo-SP, Brazil
- Universidade Santo Amaro, São Paulo-SP, Brazil
| | - Christiane Pavani
- Instituto de Química, Universidade de São Paulo, São Paulo-SP, Brazil
- Universidade Nove de Julho, São Paulo-SP, Brazil
| | | | - Rosangela Itri
- Instituto de Física, Universidade de São Paulo, São Paulo-SP, Brazil
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The water soluble axially disubstituted silicon phthalocyanines: photophysicochemical properties and in vitro studies. J Biol Inorg Chem 2017; 22:953-967. [DOI: 10.1007/s00775-017-1473-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 06/07/2017] [Indexed: 12/14/2022]
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Martinez De Pinillos Bayona A, Mroz P, Thunshelle C, Hamblin MR. Design features for optimization of tetrapyrrole macrocycles as antimicrobial and anticancer photosensitizers. Chem Biol Drug Des 2017; 89:192-206. [PMID: 28205400 DOI: 10.1111/cbdd.12792] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 05/10/2016] [Accepted: 05/16/2016] [Indexed: 01/10/2023]
Abstract
Photodynamic therapy (PDT) uses non-toxic dyes called photosensitizers (PS) and harmless visible light that combine to form highly toxic reactive oxygen species that kill cells. Originally, a cancer therapy, PDT, now includes applications for infections. The most widely studied PS are tetrapyrrole macrocycles including porphyrins, chlorins, bacteriochlorins, and phthalocyanines. The present review covers the design features in PS that can work together to maximize the PDT activity for various disease targets. Photophysical and photochemical properties include the wavelength and size of the long-wavelength absorption peak (for good light penetration into tissue), the triplet quantum yield and lifetime, and the propensity to undergo type I (electron transfer) or type II (energy transfer) photochemical mechanisms. The central metal in the tetrapyrrole macrocycle has a strong influence on the PDT activity. Hydrophobicity and charge are important factors that govern interactions with various types of cells (cancer and microbial) in vitro and the pharmacokinetics and biodistribution in vivo. Hydrophobic structures tend to be water insoluble and require a drug delivery vehicle for maximal activity. Molecular asymmetry and amphiphilicity are also important for high activity. In vivo some structures possess the ability to selectively accumulate in tumors and to localize in the tumor microvasculature producing vascular shutdown after illumination.
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Affiliation(s)
- Alejandra Martinez De Pinillos Bayona
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, USA.,Division of Surgery & Interventional Science, University College London, Royal Free Hospital, London, UK
| | - Pawel Mroz
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Connor Thunshelle
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, USA.,Harvard College, Cambridge, MA, USA
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, USA.,Department of Dermatology, Harvard Medical School, Boston, MA, USA.,Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, USA
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Christie C, Pomeroy A, Nair R, Berg K, Hirschberg H. Photodynamic therapy enhances the efficacy of gene-directed enzyme prodrug therapy. Photodiagnosis Photodyn Ther 2017; 18:140-148. [PMID: 28257943 DOI: 10.1016/j.pdpdt.2017.02.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 02/10/2017] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Gene-directed enzyme prodrug therapy (GDEPT) employing the cytosine deaminase (CD) gene, which encodes an enzyme that converts the nontoxic agent 5-fluorocytosine (5-FC) into the chemotherapeutic drug 5-fluorouracil (5-FU), has shown promise both in experimental animals and in clinical trials. Nevertheless, with the transfection systems available presently the percentage of tumor cells incorporating the desired gene is usually too low for successful therapy. We have examined the ability of photodynamic therapy (PDT) to enhance the efficacy of the metabolites, converted from 5-FC by CD gene transfected rat glioma cells. METHODS Hybrid tumor cell spheroids consisting of CD poitive and CD negative F98 glioma cells in varying ratios were used as in vitro tumor models. PDT was performed with the photosensitizer AlPcS2a and λ=670nm laser irradiance, both before and after confrontation with 5-FC. RESULTS PDT increased the toxicity of 5-FU either as pure drug or derived from monolayers of CD positive cells chalanged with 5-FC. PDT in combination with 5-FC resulted in a significantly enhanced inhibition of hybrid spheroid growth compared to non light treated controls. This was the case even at tumor to producer cell ratios as high as 40:1. CONCLUSION The results of the present study show that GDEPT and PDT interact in a synergistic manner over a range of prodrug concentration and tumor to transfected cell ratios. The degree of synergy was significant regardless if PDT treatment was given before or after 5-FC administration. The highest degree of interaction was observed though, when PDT was delivered prior to prodrug exposure.
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Affiliation(s)
- Catherine Christie
- Beckman Laser Institute and Medical Clinic, University of California, Irvine 1002 Health Sciences Rd Irvine, CA 92617, USA
| | - Aftin Pomeroy
- Beckman Laser Institute and Medical Clinic, University of California, Irvine 1002 Health Sciences Rd Irvine, CA 92617, USA
| | - Rohit Nair
- Beckman Laser Institute and Medical Clinic, University of California, Irvine 1002 Health Sciences Rd Irvine, CA 92617, USA
| | - Kristian Berg
- Dept. of Radiation Biology, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | - Henry Hirschberg
- Beckman Laser Institute and Medical Clinic, University of California, Irvine 1002 Health Sciences Rd Irvine, CA 92617, USA.
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32
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Li H, Liu C, Zeng YP, Hao YH, Huang JW, Yang ZY, Li R. Nanoceria-Mediated Drug Delivery for Targeted Photodynamic Therapy on Drug-Resistant Breast Cancer. ACS APPLIED MATERIALS & INTERFACES 2016; 8:31510-31523. [PMID: 27933980 DOI: 10.1021/acsami.6b07338] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Photodynamic therapy (PDT) has shown great potential for overcoming drug-resistant cancers. Here, we report a multifunctional drug delivery system based on chlorin e6 (Ce6)/folic acid (FA)-loaded branched polyethylenimine-PEGylation ceria nanoparticles (PPCNPs-Ce6/FA), which was developed for targeted PDT to overcome drug-resistant breast cancers. Nanocarrier delivery and FA targeting significantly promoted the cellular uptake of photosensitizers (PSs), followed by their accumulation in lysosomes. PPCNPs-Ce6/FA generated reactive oxygen species (ROS) after near-infrared irradiation (NIR, 660 nm), leading to reduced P-glycoprotein (P-gp) expression, lysosomal membrane permeabilization (LMP), and excellent phototoxicity toward resistant MCF-7/ADR cells, even at ultralow doses. Moreover, we identified NIR-triggered lysosomal-PDT using the higher dose of PPCNPs-Ce6/FA, which stimulated cell death by plasma membrane blebbing, cell swelling, and energy depletion, indicating an oncosis-like cell death pathway, despite the occurrence of apoptotic or autophagic mechanisms at lower drug doses. In vivo studies showed prolonged blood circulation times, low toxicity in mice, and high tumor accumulation of PPCNPs-Ce6/FA. In addition, using NIR-triggered PDT, PPCNPs-Ce6/FA displayed excellent potency for tumor regression in the MCF-7/ADR xenograft murine model. This study suggested that multifunctional PPCNPs-Ce6/FA nanocomposites are a versatile and effective drug delivery system that may potentially be exploited for phototherapy to overcome drug-resistant cancers, and the mechanisms of cell death induced by PDT should be considered in the design of clinical protocols.
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Affiliation(s)
- Hong Li
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University , Chongqing 400038, China
| | - Cong Liu
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University , Chongqing 400038, China
| | - Yi-Ping Zeng
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University , Chongqing 400038, China
| | - Yu-Hui Hao
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University , Chongqing 400038, China
| | - Jia-Wei Huang
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University , Chongqing 400038, China
| | - Zhang-You Yang
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University , Chongqing 400038, China
| | - Rong Li
- Institute of Combined Injury, State Key Laboratory of Trauma Burns and Combined Injury, Chongqing Engineering Research Center for Nanomedicine, College of Preventive Medicine, Third Military Medical University , Chongqing 400038, China
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Near-infrared uncaging or photosensitizing dictated by oxygen tension. Nat Commun 2016; 7:13378. [PMID: 27853134 PMCID: PMC5476797 DOI: 10.1038/ncomms13378] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 09/19/2016] [Indexed: 12/26/2022] Open
Abstract
Existing strategies that use tissue-penetrant near-infrared light for the targeted treatment of cancer typically rely on the local generation of reactive oxygen species. This approach can be impeded by hypoxia, which frequently occurs in tumour microenvironments. Here we demonstrate that axially unsymmetrical silicon phthalocyanines uncage small molecules preferentially in a low-oxygen environment, while efficiently generating reactive oxygen species in normoxic conditions. Mechanistic studies of the uncaging reaction implicate a photoredox pathway involving photoinduced electron transfer to generate a key radical anion intermediate. Cellular studies demonstrate that the biological mechanism of action is O2-dependent, with reactive oxygen species-mediated phototoxicity in normoxic conditions and small molecule uncaging in hypoxia. These studies provide a near-infrared light-targeted treatment strategy with the potential to address the complex tumour landscape through two distinct mechanisms that vary in response to the local O2 environment.
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Abstract
The high degree of selectivity for photodamage to subcellular organelles can provide a means for evaluation of autophagic death pathways. While many current reports rely on ambiguous criteria, there are glimmers of unequivocal evidence.
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Affiliation(s)
- David Kessel
- a Department of Pharmacology, Wayne State University School of Medicine ; Detroit , MI USA
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35
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Luiza Andreazza N, Vevert-Bizet C, Bourg-Heckly G, Sureau F, José Salvador M, Bonneau S. Berberine as a photosensitizing agent for antitumoral photodynamic therapy: Insights into its association to low density lipoproteins. Int J Pharm 2016; 510:240-9. [DOI: 10.1016/j.ijpharm.2016.06.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 05/30/2016] [Accepted: 06/05/2016] [Indexed: 01/30/2023]
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36
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Kessel D, Evans CL. Promotion of Proapoptotic Signals by Lysosomal Photodamage: Mechanistic Aspects and Influence of Autophagy. Photochem Photobiol 2016; 92:620-3. [PMID: 27096545 DOI: 10.1111/php.12592] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 03/31/2016] [Indexed: 02/02/2023]
Abstract
Prior studies demonstrated that a low level (LD10-15 ) of lysosomal photodamage can sensitize cells to the apoptotic death that results from subsequent mitochondrial photodamage. We have proposed that this process occurs via a calpain-catalyzed cleavage of the autophagy-associated protein ATG5 to form a proapoptotic fragment. In this report, we provide evidence for the postulated ATG5 cleavage and show that the sequential photodynamic therapy (PDT) protocol can also partly overcome the adverse effect of hypoxia on the initiation of apoptosis. While autophagy can offer cytoprotection after mitochondrial photodamage, this does not appear to apply when lysosomes are the target. This may account for the ability of very low PDT doses directed at lysosomes to evoke ATG5 cleavage. The resulting proapoptotic effect overcomes intrinsic cytoprotection from mitochondrial photodamage along with a further stimulation of phototoxicity.
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Affiliation(s)
- David Kessel
- Department of Pharmacology, Wayne State University, Detroit, MI
| | - Conor L Evans
- Wellman Center for Photomedicine, Harvard Medical School Massachusetts General Hospital, Boston, MA
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37
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Bacellar IOL, Tsubone TM, Pavani C, Baptista MS. Photodynamic Efficiency: From Molecular Photochemistry to Cell Death. Int J Mol Sci 2015; 16:20523-59. [PMID: 26334268 PMCID: PMC4613217 DOI: 10.3390/ijms160920523] [Citation(s) in RCA: 243] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 08/18/2015] [Accepted: 08/24/2015] [Indexed: 12/11/2022] Open
Abstract
Photodynamic therapy (PDT) is a clinical modality used to treat cancer and infectious diseases. The main agent is the photosensitizer (PS), which is excited by light and converted to a triplet excited state. This latter species leads to the formation of singlet oxygen and radicals that oxidize biomolecules. The main motivation for this review is to suggest alternatives for achieving high-efficiency PDT protocols, by taking advantage of knowledge on the chemical and biological processes taking place during and after photosensitization. We defend that in order to obtain specific mechanisms of cell death and maximize PDT efficiency, PSes should oxidize specific molecular targets. We consider the role of subcellular localization, how PS photochemistry and photophysics can change according to its nanoenvironment, and how can all these trigger specific cell death mechanisms. We propose that in order to develop PSes that will cause a breakthrough enhancement in the efficiency of PDT, researchers should first consider tissue and intracellular localization, instead of trying to maximize singlet oxygen quantum yields in in vitro tests. In addition to this, we also indicate many open questions and challenges remaining in this field, hoping to encourage future research.
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Affiliation(s)
- Isabel O L Bacellar
- Instituto de Química, Universidade de São Paulo, São Paulo 05508-900, Brazil.
| | - Tayana M Tsubone
- Instituto de Química, Universidade de São Paulo, São Paulo 05508-900, Brazil.
| | - Christiane Pavani
- Programa de Pós Graduação em Biofotônica Aplicada às Ciências da Saúde, Universidade Nove de Julho, São Paulo 01504-001, Brazil.
| | - Mauricio S Baptista
- Instituto de Química, Universidade de São Paulo, São Paulo 05508-900, Brazil.
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38
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Meyers JD, Cheng Y, Broome AM, Agnes RS, Schluchter MD, Margevicius S, Wang X, Kenney ME, Burda C, Basilion JP. Peptide-Targeted Gold Nanoparticles for Photodynamic Therapy of Brain Cancer. PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION : MEASUREMENT AND DESCRIPTION OF PARTICLE PROPERTIES AND BEHAVIOR IN POWDERS AND OTHER DISPERSE SYSTEMS 2015; 32:448-457. [PMID: 25999665 PMCID: PMC4437573 DOI: 10.1002/ppsc.201400119] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Targeted drug delivery using epidermal growth factor peptide-targeted gold nanoparticles (EGFpep-Au NPs) is investigated as a novel approach for delivery of photodynamic therapy (PDT) agents, specifically Pc 4, to cancer. In vitro studies of PDT show that EGFpep-Au NP-Pc 4 is twofold better at killing tumor cells than free Pc 4 after increasing localization in early endosomes. In vivo studies show that targeting with EGFpep-Au NP-Pc 4 improves accumulation of fluorescence of Pc 4 in subcutaneous tumors by greater than threefold compared with untargeted Au NPs. Targeted drug delivery and treatment success can be imaged via the intrinsic fluorescence of the PDT drug Pc 4. Using Pc 4 fluorescence, it is demonstrated in vivo that EGFpep-Au NP-Pc 4 impacts biodistribution of the NPs by decreasing the initial uptake by the reticuloendothelial system (RES) and by increasing the amount of Au NPs circulating in the blood 4 h after IV injection. Interestingly, in vivo PDT with EGFpep-Au NP-Pc 4 results in interrupted tumor growth when compared with EGFpep-Au NP control mice when selectively activated with light. These data demonstrate that EGFpep-Au NP-Pc 4 utilizes cancer-specific biomarkers to improve drug delivery and therapeutic efficacy over untargeted drug delivery.
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Affiliation(s)
- Joseph D. Meyers
- Departments of Biomedical Engineering and Radiology, NFCR Center for Molecular Imaging, Case Western Reserve University, 11100 Euclid Ave., Cleveland, OH 44106, USA
| | - Yu Cheng
- Department of Chemistry, NFCR Center for Molecular Imaging, Case Western Reserve University, 11100 Euclid Ave., Cleveland, OH 44106, USA
| | - Ann-Marie Broome
- Departments of Biomedical Engineering and Radiology, NFCR Center for Molecular Imaging, Case Western Reserve University, 11100 Euclid Ave., Cleveland, OH 44106, USA
| | - Richard S. Agnes
- Departments of Biomedical Engineering and Radiology, NFCR Center for Molecular Imaging, Case Western Reserve University, 11100 Euclid Ave., Cleveland, OH 44106, USA
| | - Mark D. Schluchter
- Departments of Epidemiology and Biostatistics, NFCR Center for Molecular Imaging, Case Western Reserve University, 11100 Euclid Ave., Cleveland, OH 44106, USA
| | - Seunghee Margevicius
- Departments of Epidemiology and Biostatistics, NFCR Center for Molecular Imaging, Case Western Reserve University, 11100 Euclid Ave., Cleveland, OH 44106, USA
| | - Xinning Wang
- Departments of Biomedical Engineering and Radiology, NFCR Center for Molecular Imaging, Case Western Reserve University, 11100 Euclid Ave., Cleveland, OH 44106, USA
| | - Malcolm E. Kenney
- Department of Chemistry, NFCR Center for Molecular Imaging, Case Western Reserve University, 11100 Euclid Ave., Cleveland, OH 44106, USA
| | - Clemens Burda
- Department of Chemistry, NFCR Center for Molecular Imaging, Case Western Reserve University, 11100 Euclid Ave., Cleveland, OH 44106, USA
| | - James P. Basilion
- Departments of Biomedical Engineering and Radiology, NFCR Center for Molecular Imaging, Case Western Reserve University, 11100 Euclid Ave., Cleveland, OH 44106, USA
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Dąbrowski JM, Arnaut LG. Photodynamic therapy (PDT) of cancer: from local to systemic treatment. Photochem Photobiol Sci 2015. [DOI: 10.1039/c5pp00132c] [Citation(s) in RCA: 295] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Photodynamic therapy (PDT) requires a medical device, a photosensitizing drug and adequate use of both to trigger biological mechanisms that can rapidly destroy the primary tumour and provide long-lasting protection against metastasis.
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Affiliation(s)
| | - Luis G. Arnaut
- Chemistry Department
- University of Coimbra
- 3004-535 Coimbra
- Portugal
- Luzitin SA
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40
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Soriano J, Villanueva A, Stockert JC, Cañete M. Regulated necrosis in HeLa cells induced by ZnPc photodynamic treatment: a new nuclear morphology. Int J Mol Sci 2014; 15:22772-85. [PMID: 25501332 PMCID: PMC4284736 DOI: 10.3390/ijms151222772] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 11/03/2014] [Accepted: 12/01/2014] [Indexed: 12/05/2022] Open
Abstract
Photodynamic therapy (PDT) is a cancer treatment modality based on the administration of a photosensitizer (PS), which accumulates preferentially in tumor cells. Subsequent irradiation of the neoplastic area triggers a cascade of photochemical reactions that leads to the formation of highly reactive oxygen species responsible for cell inactivation. Photodynamic treatments in vitro are performed with the PS, zinc-phthalocyanine (ZnPc). The PS is near the plasma membrane during uptake and internalization. Inactivation clearly occurs by a necrotic process, manifested by nuclear pyknosis, negative TUNEL and Annexin V assays and non-relocation of cytochrome c. In contrast, by increasing the incubation time, ZnPc is accumulated in the Golgi apparatus and produces cell inactivation with characteristics of apoptosis and necrosis: TUNEL positive, relocated cytochrome c and negative Annexin V assay. This type of death produces a still undescribed granulated nuclear morphology, which is different from that of necrosis or apoptosis. This morphology is inhibited by necrostatin-1, a specific inhibitor of regulated necrosis.
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Affiliation(s)
- Jorge Soriano
- Department of Biology, University Autonomous of Madrid, 28049 Madrid, Spain.
| | - Angeles Villanueva
- Department of Biology, University Autonomous of Madrid, 28049 Madrid, Spain.
| | | | - Magdalena Cañete
- Department of Biology, University Autonomous of Madrid, 28049 Madrid, Spain.
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Bio M, Rajaputra P, Nkepang G, You Y. Far-red light activatable, multifunctional prodrug for fluorescence optical imaging and combinational treatment. J Med Chem 2014; 57:3401-9. [PMID: 24694092 PMCID: PMC4002125 DOI: 10.1021/jm5000722] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
We recently developed “photo-unclick
chemistry”,
a novel chemical tool involving the cleavage of aminoacrylate by singlet
oxygen, and demonstrated its application to visible light-activatable
prodrugs. In this study, we prepared an advanced multifunctional prodrug,
Pc-(L-CA4)2, composed of the fluorescent photosensitizer
phthalocyanine (Pc), an SO-labile aminoacrylate linker (L), and a
cytotoxic drug combretastatin A-4 (CA4). Pc-(L-CA4)2 had
reduced dark toxicity compared with CA4. However, once illuminated,
it showed improved toxicity similar to CA4 and displayed bystander
effects in vitro. We monitored the time-dependent
distribution of Pc-(L-CA4)2 using optical imaging with
live mice. We also effectively ablated tumors by the illumination
with far-red light to the mice, presumably through the combined effects
of photodynamic therapy (PDT) and released chemotherapy drug, without
any sign of acute systemic toxicity.
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Affiliation(s)
- Moses Bio
- Department of Pharmaceutical Sciences and ‡Department of Chemistry and Biochemistry, University of Oklahoma Health Sciences Center , Oklahoma City, Oklahoma 73117, United States
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42
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Non-aggregated and water soluble amphiphilic silicon phthalocyanines with two axial substituents and their electrochemical properties. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.07.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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43
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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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Starkey JR, Pascucci EM, Drobizhev MA, Elliott A, Rebane AK. Vascular targeting to the SST2 receptor improves the therapeutic response to near-IR two-photon activated PDT for deep-tissue cancer treatment. Biochim Biophys Acta Gen Subj 2013; 1830:4594-603. [PMID: 23747302 DOI: 10.1016/j.bbagen.2013.05.043] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Revised: 05/11/2013] [Accepted: 05/29/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND Broader clinical acceptance of photodynamic therapy is currently hindered by (a) poor depth efficacy, and (b) predisposition towards establishment of an angiogenic environment during the treatment. Improved depth efficacy is being sought by exploiting the NIR tissue transparency window and by photo-activation using two-photon absorption (2PA). Here, we use two-photon activation of PDT sensitizers, untargeted and targeted to SST2 receptors or EGF receptors, to achieve deep tissue treatment. METHODS Human tumor lines, positive or negative for SST2r expression were used, as well as murine 3LL cells and bovine aortic endothelial cells. Expression of SST2 receptors on cancer cells and tumor vasculature was evaluated in vitro and frozen xenograft sections. PDT effects on tumor blood flow were followed using in vivo scanning after intravenous injection of FITC conjugated dextran 150K. Dependence of the PDT efficacy on the laser pulse duration was evaluated. Effectiveness of targeting to vascular SST2 receptors was compared to that of EGF receptors, or no targeting. RESULTS Tumor vasculature stained for SST2 receptors even in tumors from SST2 receptor negative cell lines, and SST2r targeted PDT led to tumor vascular shutdown. Stretching the pulse from ~120fs to ~3ps led to loss of the PDT efficacy especially at greater depth. PDT targeted to SST2 receptors was much more effective than untargeted PDT or PDT targeted to EGF receptors. GENERAL SIGNIFICANCE The use of octreotate to target SST2 receptors expressed on tumor vessels is an excellent approach to PDT with few recurrences and some long term cures.
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Affiliation(s)
- Jean R Starkey
- Montana State University, Department of Microbiology, Bozeman, MT 59717, USA.
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Ruiz-González R, Acedo P, Sánchez-García D, Nonell S, Cañete M, Stockert JC, Villanueva A. Efficient induction of apoptosis in HeLa cells by a novel cationic porphycene photosensitizer. Eur J Med Chem 2013; 63:401-14. [PMID: 23517729 DOI: 10.1016/j.ejmech.2013.02.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 02/18/2013] [Accepted: 02/21/2013] [Indexed: 12/20/2022]
Abstract
In the present study we analyze the photobiological properties of 2,7,12-tris(α-pyridinio-p-tolyl)-17-(p-(methoxymethyl)phenyl) porphycene (Py3MeO-TBPo) in Hela cells, in order to assess its potential as a new photosensitizer for photodynamic therapy of cultured tumor cells. Using 0.5 μM Py3MeO-TBPo, flow cytometry studies demonstrated an increase of intracellular drug levels related to the incubation time, reaching a maximum at 18 h. LysoTracker(®) Green (LTG) and MitoTracker(®) Green (MTG) probes were used to identify the subcellular localization. Upon exposure to ultraviolet excitation, red porphycene fluorescence was detected as red granules in the cytoplasm that colocalized with LTG. No significant toxic effects were detected for Py3MeO-TBPo in the dark at concentrations below 1 μM. In contrast, Py3MeO-TBPo combined with red-light irradiation induced concentration- and fluence-dependent HeLa cells inactivation. Besides, all photodynamic protocols assayed induced a clear effect of cell detachment inhibition after trypsin treatment. Both apoptotic and necrotic cell death mechanisms can occur in HeLa cells depending on the experimental protocol. After 18 h incubation with 0.5 μM Py3MeO-TBPo and subsequent red light irradiation (3.6 J/cm(2)), a high number of cells die by apoptosis, as evaluated by morphological alterations, immunofluorescent relocalization of Bax from cytosol to mitochondria, and TUNEL assay. Likewise, immunofluorescence techniques showed that cytochrome c is released from mitochondria into cytosol in cells undergoing apoptosis, which occurs immediately after relocation of Bax in mitochondria. The highest amount of apoptosis appeared 24 h after treatment (70%) and this cell death occurred without cell detachment to the substrate. In contrast, with 0.75 μM Py3MeO-TBPo and 3.6 J/cm(2) irradiation, morphological changes showed a preferential necrotic cell death. Singlet oxygen was identified as the cytotoxic agent involved in cell photoinactivation. Moreover, cell cultures pre-exposed to the singlet oxygen scavenger sodium azide showed pronounced protection against the loss of viability induced by Py3MeO-TBPo and light. Different changes in distribution and organization of cytoskeletal elements (microtubules and actin microfilaments) as well as the protein vinculin, after apoptotic and necrotic photodynamic treatments have been analyzed. Neither of these two cell death mechanisms (apoptosis or necrosis) induced cell detachment. In summary, Py3MeO-TBPo appears to meet the requirements for further scrutiny as a very good photosensitizer for photodynamic therapy: it is water soluble, has a high absorption in the red spectral region (where light penetration in tissue is higher), and is able to induce effective high apoptotic rate (70%) related to the more widely studied photosensitizers.
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Affiliation(s)
- Rubén Ruiz-González
- Grup d'Enginyeria Molecular, Institut Químic de Sarrià, Universitat Ramon Llull, Barcelona 08017, Spain
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Doane TL, Chuang CH, Chomas A, Burda C. Photophysics of silicon phthalocyanines in aqueous media. Chemphyschem 2013; 14:321-30. [PMID: 23307629 DOI: 10.1002/cphc.201200962] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Indexed: 11/06/2022]
Abstract
Phthalocyanines have been used as photodynamic therapy (PDT) agents because of their uniquely favorable optical properties and high photostability. They have been shown to be highly successful for the treatment of cancer through efficient singlet-oxygen ((1)O(2)) production. However, due to their hydrophobic properties, the considerations of solubility and cellular location have made understanding their photophysics in vitro and in vivo difficult. Indeed, many quantitative assessments of PDT reagents are undertaken in purely organic solvents, presenting challenges for interpreting observations during practical application in vivo. With steady-state and time-resolved laser spectroscopy, we show that for axial ligated silicon phthalocyanines in aqueous media, both the water:lipophile ratio and the pH have drastic effects on their photophysics, and ultimately dictate their functionality as PDT drugs. We suggest that considering the presented photophysics for PDT drugs in aqueous solutions leads to guidelines for a next generation of even more potent PDT agents.
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Affiliation(s)
- Tennyson L Doane
- Center for Chemical Dynamics, Department of Chemistry, Case Western Reserve University, Cleveland, OH 44106, USA
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Hung HI, Schwartz JM, Maldonado EN, Lemasters JJ, Nieminen AL. Mitoferrin-2-dependent mitochondrial iron uptake sensitizes human head and neck squamous carcinoma cells to photodynamic therapy. J Biol Chem 2012; 288:677-86. [PMID: 23135267 DOI: 10.1074/jbc.m112.422667] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Photodynamic therapy (PDT) is a promising approach to treat head and neck cancer cells. Here, we investigated whether mitochondrial iron uptake through mitoferrin-2 (Mfrn2) enhanced PDT-induced cell killing. Three human head and neck squamous carcinoma cell lines (UMSCC1, UMSCC14A, and UMSCC22A) were exposed to light and Pc 4, a mitochondria-targeted photosensitizer. The three cell lines responded differently: UMSCC1 and UMSCC14A cells were more resistant, whereas UMSCC22A cells were more sensitive to Pc 4-PDT-induced cell death. In non-erythroid cells, Mfrn2 is an iron transporter in the mitochondrial inner membrane. PDT-sensitive cells expressed higher Mfrn2 mRNA and protein levels compared with PDT-resistant cells. High Mfrn2-expressing cells showed higher rates of mitochondrial Fe(2+) uptake compared with low Mfrn2-expressing cells. Bafilomycin, an inhibitor of the vacuolar proton pump of lysosomes and endosomes that causes lysosomal iron release to the cytosol, enhanced PDT-induced cell killing of both resistant and sensitive cells. Iron chelators and the inhibitor of the mitochondrial Ca(2+) (and Fe(2+)) uniporter, Ru360, protected against PDT plus bafilomycin toxicity. Knockdown of Mfrn2 in UMSCC22A cells decreased the rate of mitochondrial Fe(2+) uptake and delayed PDT plus bafilomycin-induced mitochondrial depolarization and cell killing. Taken together, the data suggest that lysosomal iron release and Mfrn2-dependent mitochondrial iron uptake act synergistically to induce PDT-mediated and iron-dependent mitochondrial dysfunction and subsequent cell killing. Furthermore, Mfrn2 represents a possible biomarker of sensitivity of head and neck cancers to cell killing after PDT.
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Affiliation(s)
- Hsin-I Hung
- Center for Cell Death, Injury, and Regeneration, Medical University of South Carolina, Charleston, South Carolina 29425, USA
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Yoo JO, Ha KS. New insights into the mechanisms for photodynamic therapy-induced cancer cell death. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2012; 295:139-74. [PMID: 22449489 DOI: 10.1016/b978-0-12-394306-4.00010-1] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Photodynamic therapy (PDT) is a promising therapeutic modality for cancer treatment; however, a more detailed understanding is needed to improve the clinical use of this therapy. PDT induces cancer cell death by apoptosis, necrosis, and autophagy, and these mechanisms can be concurrently occurred. PDT destroys cancer cells by inducing apoptosis through diverse signaling pathways coupled with Bcl-2 family members, caspases, and apopotosis-inducing factor. When the apoptotic pathway is unavailable, PDT can cause cancer cell death through induction of a necrotic or autophagic mechanism. Autophagy is occurred in a Bax-independent manner and can be stimulated in parallel with apoptosis. PDT directly destroys cancer cells by inducing either apoptotic or necrotic death. PDT also can induce autophagy as a death or a survival mechanism. These mechanisms are dependent on a variety of parameters including the nature of the photosensitizer, PDT dose, and cell genotype. Understanding the complex cross talk between these pathways may improve the effectiveness of PDT. Here, we discuss the interplay between these mechanisms based on recent evidence and suggest prospects with regard to advances in PDT.
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Affiliation(s)
- Je-Ok Yoo
- Department of Molecular and Cellular Biochemistry, Kangwon National University School of Medicine, Chuncheon, Kangwon-do, South Korea
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Kessel DH, Price M, Reiners JJ. ATG7 deficiency suppresses apoptosis and cell death induced by lysosomal photodamage. Autophagy 2012; 8:1333-41. [PMID: 22889762 DOI: 10.4161/auto.20792] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Photodynamic therapy (PDT) involves photosensitizing agents that, in the presence of oxygen and light, initiate formation of cytotoxic reactive oxygen species (ROS). PDT commonly induces both apoptosis and autophagy. Previous studies with murine hepatoma 1c1c7 cells indicated that loss of autophagy-related protein 7 (ATG7) inhibited autophagy and enhanced the cytotoxicity of photosensitizers that mediate photodamage to mitochondria or the endoplasmic reticulum. In this study, we examined two photosensitizing agents that target lysosomes: the chlorin NPe6 and the palladium bacteriopheophorbide WST11. Irradiation of wild-type 1c1c7 cultures loaded with either photosensitizer induced apoptosis and autophagy, with a blockage of autophagic flux. An ATG7- or ATG5-deficiency suppressed the induction of autophagy in PDT protocols using either photosensitizer. Whereas ATG5-deficient cells were quantitatively similar to wild-type cultures in their response to NPe6 and WST11 PDT, an ATG7-deficiency suppressed the apoptotic response (as monitored by analyses of chromatin condensation and procaspase-3/7 activation) and increased the LD(50) light dose by > 5-fold (as monitored by colony-forming assays). An ATG7-deficiency did not prevent immediate lysosomal photodamage, as indicated by loss of the lysosomal pH gradient. However, unlike wild-type and ATG5-deficient cells, the lysosomes of ATG7-deficient cells recovered this gradient within 4 h of irradiation, and never underwent permeabilization (monitored as release of endocytosed 10-kDa dextran polymers). We propose that the efficacy of lysosomal photosensitizers is in part due to both promotion of autophagic stress and suppression of autophagic prosurvival functions. In addition, an effect of ATG7 unrelated to autophagy appears to modulate lysosomal photodamage.
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Affiliation(s)
- David H Kessel
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA.
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Acar İ, Bıyıklıoğlu Z, Durmuş M, Kantekin H. Synthesis, characterization and comparative studies on the photophysical and photochemical properties of peripherally and non-peripherally tetra-substituted zinc(II) phthalocyanines. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.02.028] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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