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Spadin FS, Gergely LP, Kämpfer T, Frenz M, Vermathen M. Fluorescence lifetime imaging and phasor analysis of intracellular porphyrinic photosensitizers applied with different polymeric formulations. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 254:112904. [PMID: 38579534 DOI: 10.1016/j.jphotobiol.2024.112904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 03/06/2024] [Accepted: 04/01/2024] [Indexed: 04/07/2024]
Abstract
The fluorescence lifetime of a porphyrinic photosensitizer (PS) is an important parameter to assess the aggregation state of the PS even in complex biological environments. Aggregation-induced quenching of the PS can significantly reduce the yield of singlet oxygen generation and thus its efficiency as a medical drug in photodynamic therapy (PDT) of diseased tissues. Hydrophobicity and the tendency to form aggregates pose challenges on the development of efficient PSs and often require carrier systems. A systematic study was performed to probe the impact of PS structure and encapsulation into polymeric carriers on the fluorescence lifetime in solution and in the intracellular environment. Five different porphyrinic PSs including chlorin e6 (Ce6) derivatives and tetrakis(m-hydroxyphenyl)-porphyrin and -chlorin were studied in free form and combined with polyvinylpyrrolidone (PVP) or micelles composed of triblock-copolymers or Cremophor. Following incubation of HeLa cells with these systems, fluorescence lifetime imaging combined with phasor analysis and image segmentation was applied to study the lifetime distribution in the intracellular surrounding. The data suggest that for free PSs, the structure-dependent cell uptake pathways determine their state and emission lifetimes. PS localization in the plasma membrane yielded mostly monomers with long fluorescence lifetimes whereas the endocytic pathway with subsequent lysosomal deposition adds a short-lived component for hydrophilic anionic PSs. Prolonged incubation times led to increasing contributions from short-lived components that derive from aggregates mainly localized in the cytoplasm. Encapsulation of PSs into polymeric carriers led to monomerization and mostly fluorescence emission decays with long fluorescence lifetimes in solution. However, the efficiency depended on the binding strength that was most pronounced for PVP. In the cellular environment, PVP was able to maintain monomeric long-lived species over prolonged incubation times. This was most pronounced for Ce6 derivatives with a logP value around 4.5. Micellar encapsulation led to faster release of the PSs resulting in multiple components with long and short fluorescence lifetimes. The hydrophilic hardly aggregating PS exhibited a mostly stable invariant lifetime distribution over time with both carriers. The presented data are expected to contribute to optimized PDT treatment protocols and improved PS-carrier design for preventing intracellular fluorescence quenching. In conclusion, amphiphilic and concurrent hydrophobic PSs with high membrane affinity as well as strong binding to the carrier have best prospects to maintain their photophysical properties in vivo and serve thus as efficient photodynamic diagnosis and PDT drugs.
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Affiliation(s)
- Florentin S Spadin
- Institute of Applied Physics, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
| | - Lea P Gergely
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, Freiestrasse 3, 3012 Bern, Switzerland
| | - Tobias Kämpfer
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, Freiestrasse 3, 3012 Bern, Switzerland
| | - Martin Frenz
- Institute of Applied Physics, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland.
| | - Martina Vermathen
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, Freiestrasse 3, 3012 Bern, Switzerland.
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Boscencu R, Radulea N, Manda G, Machado IF, Socoteanu RP, Lupuliasa D, Burloiu AM, Mihai DP, Ferreira LFV. Porphyrin Macrocycles: General Properties and Theranostic Potential. Molecules 2023; 28:molecules28031149. [PMID: 36770816 PMCID: PMC9919320 DOI: 10.3390/molecules28031149] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 01/26/2023] Open
Abstract
Despite specialists' efforts to find the best solutions for cancer diagnosis and therapy, this pathology remains the biggest health threat in the world. Global statistics concerning deaths associated with cancer are alarming; therefore, it is necessary to intensify interdisciplinary research in order to identify efficient strategies for cancer diagnosis and therapy, by using new molecules with optimal therapeutic potential and minimal adverse effects. This review focuses on studies of porphyrin macrocycles with regard to their structural and spectral profiles relevant to their applicability in efficient cancer diagnosis and therapy. Furthermore, we present a critical overview of the main commercial formulations, followed by short descriptions of some strategies approached in the development of third-generation photosensitizers.
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Affiliation(s)
- Rica Boscencu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia, 020956 Bucharest, Romania
- Correspondence: (R.B.); (R.P.S.); (A.M.B.); (L.F.V.F.)
| | - Natalia Radulea
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia, 020956 Bucharest, Romania
| | - Gina Manda
- “Victor Babeş” National Institute of Pathology, 050096 Bucharest, Romania
| | - Isabel Ferreira Machado
- Polytechnic Institute of Portalegre, 7300-110 Portalegre, Portugal
- BSIRG—Biospectroscopy and Interfaces Research Group, iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico and Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - Radu Petre Socoteanu
- “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 060021 Bucharest, Romania
- Correspondence: (R.B.); (R.P.S.); (A.M.B.); (L.F.V.F.)
| | - Dumitru Lupuliasa
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia, 020956 Bucharest, Romania
| | - Andreea Mihaela Burloiu
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia, 020956 Bucharest, Romania
- Correspondence: (R.B.); (R.P.S.); (A.M.B.); (L.F.V.F.)
| | - Dragos Paul Mihai
- Faculty of Pharmacy, “Carol Davila” University of Medicine and Pharmacy, 6 Traian Vuia, 020956 Bucharest, Romania
| | - Luis Filipe Vieira Ferreira
- BSIRG—Biospectroscopy and Interfaces Research Group, iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico and Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
- Correspondence: (R.B.); (R.P.S.); (A.M.B.); (L.F.V.F.)
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Saad MA, Hasan T. Spotlight on Photoactivatable Liposomes beyond Drug Delivery: An Enabler of Multitargeting of Molecular Pathways. Bioconjug Chem 2022; 33:2041-2064. [PMID: 36197738 DOI: 10.1021/acs.bioconjchem.2c00376] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The potential of photoactivating certain molecules, photosensitizers (PS), resulting in photochemical processes, has long been realized in the form of photodynamic therapy (PDT) for the management of several cancerous and noncancerous pathologies. With an improved understanding of the photoactivation process and its broader implications, efforts are being made to exploit the various facets of photoactivation, PDT, and the associated phenomenon of photodynamic priming in enhancing treatment outcomes, specifically in cancer therapeutics. The parallel emergence of nanomedicine, specifically liposome-based nanoformulations, and the convergence of the two fields of liposome-based drug delivery and PDT have led to the development of unique hybrid systems, which combine the exciting features of liposomes with adequate complementation through the photoactivation process. While initially liposomes carrying photosensitizers (PSs) were developed for enhancing the pharmacokinetics and the general applicability of PSs, more recently, PS-loaded liposomes, apart from their utility in PDT, have found several applications including enhanced targeting of drugs, coloading multiple therapeutic agents to enhance synergistic effects, imaging, priming, triggering drug release, and facilitating the escape of therapeutic agents from the endolysosomal complex. This review discusses the design strategies, potential, and unique attributes of these hybrid systems, with not only photoactivation as an attribute but also the ability to encapsulate multiple agents for imaging, biomodulation, priming, and therapy referred to as photoactivatable multiagent/inhibitor liposomes (PMILS) and their targeted versions─targeted PMILS (TPMILS). While liposomes have formed their own niche in nanotechnology and nanomedicine with several clinically approved formulations, we try to highlight how using PS-loaded liposomes could address some of the limitations and concerns usually associated with liposomes to overcome them and enhance their preclinical and clinical utility in the future.
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Affiliation(s)
- Mohammad A Saad
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, United States
| | - Tayyaba Hasan
- Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, United States.,Division of Health Sciences and Technology, Harvard University and Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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4
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An improved in vitro photochemical internalization protocol for 3D spheroid cultures. Lasers Med Sci 2021; 36:1567-1571. [PMID: 34185168 DOI: 10.1007/s10103-021-03332-y] [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: 10/20/2020] [Accepted: 05/03/2021] [Indexed: 10/21/2022]
Abstract
Photochemical internalization (PCI) is a modified form of photodynamic therapy (PDT) that enhances the efficacy of therapeutic agents in a site and temporal specific manner in both in vitro and in vivo publications. The purpose of the study reported here was to evaluate the benefits of a modified PCI protocol in a 3D rat glioma spheroid model. In the modified protocol, F98 glioma cells were incubated with photosensitizer (AlPcS2a) prior to spheroid generation, as opposed to post-spheroid formation photosensitizer exposure commonly used in conventional protocols. The efficacy of both bleomycin and doxorubicin PCI was evaluated using either the conventional or modified protocols. The formed spheroids were then exposed to light treatment from a diode laser, λ= 670 nm. Spheroid growth was monitored for a period of 14 days. The results of spheroid growth assays showed that there was no statistically significant difference in PCI efficacy between the conventional and modified protocols for both of the drugs tested. The direct PDT effect was significantly reduced using the modified protocol. Therefore, due to its several advantages, the modified protocol is recommended for evaluating the efficacy of PCI in tumor spheroid models.
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Zheng W, Zhou Q, Yuan C. Nanoparticles for Oral Cancer Diagnosis and Therapy. Bioinorg Chem Appl 2021; 2021:9977131. [PMID: 33981334 PMCID: PMC8088384 DOI: 10.1155/2021/9977131] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 04/04/2021] [Accepted: 04/07/2021] [Indexed: 02/06/2023] Open
Abstract
Oral cancer is the sixth most common malignant cancer, affecting the health of people with an unacceptably high mortality rate. Despite numerous clinical methods in the diagnosis and therapy of oral cancer (e.g., magnetic resonance imaging, computed tomography, surgery, and chemoradiotherapy), they still remain far from optimal. Therefore, an urgent need exists for effective and practical techniques of early diagnosis and effective therapy of oral cancer. Currently, various types of nanoparticles have aroused wide public concern, representing a promising tool for diagnostic probes and therapeutic devices. Their inherent physicochemical features, including ultrasmall size, high reactivity, and tunable surface modification, enable them to overcome some of the limitations and achieve the expected diagnostic and therapeutic effect. In this review, we introduce different types of nanoparticles that emerged for the diagnosis and therapy of oral cancers. Then, the challenges and future perspectives for nanoparticles applied in oral cancer diagnosis and therapy are presented. The objective of this review is to help researchers better understand the effect of nanoparticles on oral cancer diagnosis and therapy and may accelerate breakthroughs in this field.
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Affiliation(s)
- Weiping Zheng
- Department of Stomatology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
- School of Stomatology, Qingdao University, Qingdao 266003, China
| | - Qihui Zhou
- Department of Stomatology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
- School of Stomatology, Qingdao University, Qingdao 266003, China
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266021, China
| | - Changqing Yuan
- Department of Stomatology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
- School of Stomatology, Qingdao University, Qingdao 266003, China
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6
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Wavelength dependent photo-cytotoxicity to ovarian carcinoma cells using temoporfin loaded tetraether liposomes as efficient drug delivery system. Eur J Pharm Biopharm 2020; 150:50-65. [DOI: 10.1016/j.ejpb.2020.03.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 02/27/2020] [Accepted: 03/04/2020] [Indexed: 01/10/2023]
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7
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Predicting human pharmacokinetics of liposomal temoporfin using a hybrid in silico model. Eur J Pharm Biopharm 2020; 149:121-134. [DOI: 10.1016/j.ejpb.2020.02.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 12/21/2019] [Accepted: 02/04/2020] [Indexed: 01/28/2023]
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8
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Photochemical Internalization for Intracellular Drug Delivery. From Basic Mechanisms to Clinical Research. J Clin Med 2020; 9:jcm9020528. [PMID: 32075165 PMCID: PMC7073817 DOI: 10.3390/jcm9020528] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/14/2020] [Accepted: 02/01/2020] [Indexed: 02/06/2023] Open
Abstract
Photochemical internalisation (PCI) is a unique intervention which involves the release of endocytosed macromolecules into the cytoplasmic matrix. PCI is based on the use of photosensitizers placed in endocytic vesicles that, following light activation, lead to rupture of the endocytic vesicles and the release of the macromolecules into the cytoplasmic matrix. This technology has been shown to improve the biological activity of a number of macromolecules that do not readily penetrate the plasma membrane, including type I ribosome-inactivating proteins (RIPs), gene-encoding plasmids, adenovirus and oligonucleotides and certain chemotherapeutics, such as bleomycin. This new intervention has also been found appealing for intracellular delivery of drugs incorporated into nanocarriers and for cancer vaccination. PCI is currently being evaluated in clinical trials. Data from the first-in-human phase I clinical trial as well as an update on the development of the PCI technology towards clinical practice is presented here.
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Wallenwein CM, Nova MV, Janas C, Jablonka L, Gao GF, Thurn M, Albrecht V, Wiehe A, Wacker MG. A dialysis-based in vitro drug release assay to study dynamics of the drug-protein transfer of temoporfin liposomes. Eur J Pharm Biopharm 2019; 143:44-50. [PMID: 31421208 DOI: 10.1016/j.ejpb.2019.08.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 08/14/2019] [Accepted: 08/14/2019] [Indexed: 12/11/2022]
Abstract
Today, a growing number of nanotherapeutics is utilized to deliver poorly soluble compounds using the intravenous route of administration. The drug release and the direct transfer of the active pharmaceutical ingredient to serum proteins plays an important role in bioavailability and accumulation of the drug at the target site. It is closely related to the formation of a protein corona as well as the plasma protein binding of the compound. In the present study, two in vitro drug release methods, the flow-through cell and the dispersion releaser technology, were evaluated with regards to their capability to measure a time-resolved profile of the serum protein binding. In this context, the photosensitizer temoporfin and temoporfin-loaded liposomes were tested. While in the fine capillaries of the flow-through cell a rapid agglomeration of proteins occurred, the dispersion releaser technology in combination with the four-step model enabled the measurement of the transfer of drugs from liposomes to proteins. In presence of 10% of fetal calf serum approximately 20% of the model compound temoporfin were bound to serum proteins within the first 3 h. At higher serum concentration this binding remained stable for approximately 10 h.
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Affiliation(s)
- Chantal M Wallenwein
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Branch for Translational Medicine and Pharmacology TMP, Theodor-Stern-Kai 7, 60596 Frankfurt (Main), Germany; Institute of Pharmaceutical Technology, Goethe University, Max-von-Laue-Str. 9, 60438 Frankfurt (Main), Germany
| | - Mônica Villa Nova
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Branch for Translational Medicine and Pharmacology TMP, Theodor-Stern-Kai 7, 60596 Frankfurt (Main), Germany; Institute of Pharmaceutical Technology, Goethe University, Max-von-Laue-Str. 9, 60438 Frankfurt (Main), Germany
| | - Christine Janas
- Institute of Pharmaceutical Technology, Goethe University, Max-von-Laue-Str. 9, 60438 Frankfurt (Main), Germany
| | - Laura Jablonka
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Branch for Translational Medicine and Pharmacology TMP, Theodor-Stern-Kai 7, 60596 Frankfurt (Main), Germany; Institute of Pharmaceutical Technology, Goethe University, Max-von-Laue-Str. 9, 60438 Frankfurt (Main), Germany
| | - Ge F Gao
- Institute of Pharmaceutical Technology, Goethe University, Max-von-Laue-Str. 9, 60438 Frankfurt (Main), Germany
| | - Manuela Thurn
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Branch for Translational Medicine and Pharmacology TMP, Theodor-Stern-Kai 7, 60596 Frankfurt (Main), Germany; Institute of Pharmaceutical Technology, Goethe University, Max-von-Laue-Str. 9, 60438 Frankfurt (Main), Germany
| | - Volker Albrecht
- Biolitec Research GmbH, Otto-Schott-Str. 15, 07745 Jena, Germany
| | - Arno Wiehe
- Biolitec Research GmbH, Otto-Schott-Str. 15, 07745 Jena, Germany
| | - Matthias G Wacker
- National University of Singapore, Department of Pharmacy, 6 Science Drive 2, Singapore 117546, Singapore.
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10
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Millard M, Yakavets I, Piffoux M, Brun A, Gazeau F, Guigner JM, Jasniewski J, Lassalle HP, Wilhelm C, Bezdetnaya L. mTHPC-loaded extracellular vesicles outperform liposomal and free mTHPC formulations by an increased stability, drug delivery efficiency and cytotoxic effect in tridimensional model of tumors. Drug Deliv 2018; 25:1790-1801. [PMID: 30785308 PMCID: PMC6292368 DOI: 10.1080/10717544.2018.1513609] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/09/2018] [Accepted: 08/15/2018] [Indexed: 12/13/2022] Open
Abstract
Efficient photodynamic therapy with meta-tetra(hydroxyphenyl)chlorine requires the application of specific nanoformulations. mTHPC liposomal formulation (Foslip®) demonstrated favorable pharmacokinetics properties. However, rapid liposomes destruction in circulation and rapid mTHPC release impedes Foslip® applications. Alternatively, mTHPC nanovectorization using extracellular vesicles (EVs) could be an attractive option. EVs are naturally secreted by the organism to play a role in intercellular communication due to the capacity to transport proteins and nucleic acids. EVs also possess a natural ability to deliver therapeutic molecules into cancer cells. The aim of the present study was to evaluate photophysical and photobiological properties of mTHPC loaded in endothelial EVs as nanocarriers. We also studied efficiency of nanovectorisation on mTHPC distribution and PDT activity in multicellular tumor spheroids (MCTSs). MCTS is a nonvascularized in vitro 3D model of cells that mimics a similar microenvironment to in vivo situation. mTHPC-EVs were characterized by means of spectroscopic techniques, flow cytometry and nanoparticle tracking analysis. Compared with Foslip®, mTHPC-EVs are stable in murine plasma. Better mTHPC accumulation and penetration (up to 100 µm) in MCTS was observed for mTHPC-EVs compared with liposomal mTHPC. These factors could explain enhanced photodynamic activity of mTHPC-EVs compared with free and liposomal mTHPC. The light dose inducing 50% of cell death with mTHPC-EVs was 4 and 2.5-times lower than that of free and liposomal mTHPC. The obtained results demonstrate that EVs should be considered as perspective nanocarriers for mTHPC-mediated PDT.
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Affiliation(s)
- Marie Millard
- CRAN, CNRS UMR 7039, Université de Lorraine, Nancy, France
- Research Department, Institut de Cancérologie de Lorraine, Université de Lorraine, Nancy, France
| | - Ilya Yakavets
- CRAN, CNRS UMR 7039, Université de Lorraine, Nancy, France
- Research Department, Institut de Cancérologie de Lorraine, Université de Lorraine, Nancy, France
- Laboratory of Biophysics and Biotechnology, Belarusian State University, Minsk, Belarus
| | - Max Piffoux
- Laboratoire Matière et Systèmes Complexes, CNRS UMR 7057, Université Paris-Diderot, Paris, France
| | - Amanda Brun
- Laboratoire Matière et Systèmes Complexes, CNRS UMR 7057, Université Paris-Diderot, Paris, France
| | - Florence Gazeau
- Laboratoire Matière et Systèmes Complexes, CNRS UMR 7057, Université Paris-Diderot, Paris, France
| | | | | | - Henri-Pierre Lassalle
- CRAN, CNRS UMR 7039, Université de Lorraine, Nancy, France
- Research Department, Institut de Cancérologie de Lorraine, Université de Lorraine, Nancy, France
| | - Claire Wilhelm
- Laboratoire Matière et Systèmes Complexes, CNRS UMR 7057, Université Paris-Diderot, Paris, France
| | - Lina Bezdetnaya
- CRAN, CNRS UMR 7039, Université de Lorraine, Nancy, France
- Research Department, Institut de Cancérologie de Lorraine, Université de Lorraine, Nancy, France
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Vetta MD, González L, Nogueira JJ. Hydrogen Bonding Regulates the Rigidity of Liposome-Encapsulated Chlorin Photosensitizers. ChemistryOpen 2018; 7:475-483. [PMID: 29938159 PMCID: PMC6010911 DOI: 10.1002/open.201800050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Indexed: 11/16/2022] Open
Abstract
Liposomal formulations facilitate the administration of hydrophobic drugs, avoiding precipitation and aggregation phenomena when injected in polar solvents. The integration of the photosensitizer into the liposome may alter the fluidity of the system and, thus, modify the delivery process of the drug. Such a change has been observed for the liposomal formulation of Temoporfin, which is one of the most potent chlorin photosensitizers employed in photodynamic therapy. Here, all-atom molecular dynamics simulations have been performed to identify the nature of the intermolecular interactions that might be responsible of the different lipids freedom of motion when the drug is introduced in the bilayer. It is found that Temoporfin participates as a hydrogen donor in strong hydrogen-bonding interactions with the polar groups of the phospholipids. The theoretical analysis suggests that the rigidity of drug/liposome complexes can be modulated by considering the different hydrogen-bond ability of the photosensitizer and the carrier material.
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Affiliation(s)
- Martina De Vetta
- Institute of Theoretical ChemistryFaculty of ChemistryUniversity of ViennaWähringer Str. 171090ViennaAustria
- Departamento de QuímicaUniversidad Autónoma de MadridFrancisco Tomás y Valiente, 728049 CantoblancoMadridSpain
| | - Leticia González
- Institute of Theoretical ChemistryFaculty of ChemistryUniversity of ViennaWähringer Str. 171090ViennaAustria
| | - Juan J. Nogueira
- Institute of Theoretical ChemistryFaculty of ChemistryUniversity of ViennaWähringer Str. 171090ViennaAustria
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12
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Moret F, Reddi E. Strategies for optimizing the delivery to tumors of macrocyclic photosensitizers used in photodynamic therapy (PDT). J PORPHYR PHTHALOCYA 2017. [DOI: 10.1142/s1088424617300014] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
This review briefly summaries the principles and mechanisms of action of photodynamic therapy (PDT) as concerns its application in the oncological field, highlighting its drawbacks and some of the strategies that have been or are being explored to overcome them. The major aim is to increase the efficiency and selectivity of the photosensitizer (PS) uptake in the cancer cells for optimizing the PDT effects on tumors while sparing normal cells. Some attempts to achieve this are based on the conjugation of the PS to biomolecules (small ligands, peptides) functioning as carriers with the ability to efficiently penetrate cells and/or specifically recognize and bind proteins/receptors overexpressed on the surface of cancer cells. Alternatively, the PS can be entrapped in nanocarriers derived from various types of materials that can target the tumor by exploiting the enhanced permeability and retention (EPR) effects. The use of nanocarriers is particularly attractive because it allows the simultaneous delivery of more than one drug with the possibility of combining PDT with other therapeutic modalities.
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Affiliation(s)
- Francesca Moret
- Department of Biology, University of Padova, via U. Bassi 58/B 35121 Padova, Italy
| | - Elena Reddi
- Department of Biology, University of Padova, via U. Bassi 58/B 35121 Padova, Italy
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13
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Gaio E, Scheglmann D, Reddi E, Moret F. Uptake and photo-toxicity of Foscan®, Foslip® and Fospeg® in multicellular tumor spheroids. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 161:244-52. [DOI: 10.1016/j.jphotobiol.2016.05.011] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 04/20/2016] [Accepted: 05/09/2016] [Indexed: 01/16/2023]
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14
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Villa Nova M, Janas C, Schmidt M, Ulshoefer T, Gräfe S, Schiffmann S, de Bruin N, Wiehe A, Albrecht V, Parnham MJ, Luciano Bruschi M, Wacker MG. Nanocarriers for photodynamic therapy-rational formulation design and medium-scale manufacture. Int J Pharm 2015; 491:250-60. [PMID: 26123822 DOI: 10.1016/j.ijpharm.2015.06.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 06/08/2015] [Accepted: 06/14/2015] [Indexed: 01/27/2023]
Abstract
The development and manufacture of novel nanocarriers for drug delivery has proved challenging with regards to scale-up and pharmaceutical quality. Polymeric nanocarriers composed of poly(lactic-co-glycolic acid)-b-poly(ethylene glycol) (PLGA-PEG) were prepared and the photosensitizer meso-tetrakis(3-hydroxyphenyl) chlorin (mTHPC) was effectively encapsulated. Furthermore, the interplay of various process and formulation parameters and their impact on the most important product specifications were investigated by using a factorial design and a central composite design in a microfluidic manufacturing process. These nanoparticles for intravenous administration with a size of 97 ± 0.13 nm, narrow size distribution, and an encapsulation efficiency of more than 80% were produced at high throughput. In vitro stability and in vitro drug release testing were applied for quality control purposes. Finally, the toxicity of the photosensitizer was tested in vitro. The cytotoxicity was successfully reduced while the efficacy of the formulation was maintained. First observations using in vivo imaging suggest effective distribution of the nanocarrier system after injection into rodents. Thus, further in vivo testing of the beneficial effects of nanoencapsulation into the matrix system and its formulation will be considered for the delivery of mTHPC to tumor tissues during photodynamic therapy.
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Affiliation(s)
- Mônica Villa Nova
- Laboratory of R&D of Drug Delivery Systems, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringá, Av. Colombo, 5790, Maringá, Paraná, Brazil
| | - Christine Janas
- Institute of Pharmaceutical Technology, Goethe University, 60438 Frankfurt (Main), Germany
| | - Mike Schmidt
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Project group for Translational Medicine & Pharmacology (TMP), 60596 Frankfurt/ Main, Germany
| | - Thomas Ulshoefer
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Project group for Translational Medicine & Pharmacology (TMP), 60596 Frankfurt/ Main, Germany
| | - Susanna Gräfe
- biolitec research GmbH, Otto-Schott-Str. 15, 07745 Jena, Germany
| | - Susanne Schiffmann
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Project group for Translational Medicine & Pharmacology (TMP), 60596 Frankfurt/ Main, Germany
| | - Natasja de Bruin
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Project group for Translational Medicine & Pharmacology (TMP), 60596 Frankfurt/ Main, Germany
| | - Arno Wiehe
- biolitec research GmbH, Otto-Schott-Str. 15, 07745 Jena, Germany
| | - Volker Albrecht
- biolitec research GmbH, Otto-Schott-Str. 15, 07745 Jena, Germany
| | - Michael J Parnham
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Project group for Translational Medicine & Pharmacology (TMP), 60596 Frankfurt/ Main, Germany
| | - Marcos Luciano Bruschi
- Laboratory of R&D of Drug Delivery Systems, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringá, Av. Colombo, 5790, Maringá, Paraná, Brazil
| | - Matthias G Wacker
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Project group for Translational Medicine & Pharmacology (TMP), 60596 Frankfurt/ Main, Germany.
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15
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Martinez de Pinillos Bayona A, Moore CM, Loizidou M, MacRobert AJ, Woodhams JH. Enhancing the efficacy of cytotoxic agents for cancer therapy using photochemical internalisation. Int J Cancer 2015; 138:1049-57. [PMID: 25758607 PMCID: PMC4973841 DOI: 10.1002/ijc.29510] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 02/26/2015] [Indexed: 12/22/2022]
Abstract
Photochemical internalisation (PCI) is a technique for improving cellular delivery of certain bioactive agents which are prone to sequestration within endolysosomes. There is a wide range of agents suitable for PCI‐based delivery including toxins, oligonucleotides, genes and immunoconjugates which demonstrates the versatility of this technique. The basic mechanism of PCI involves triggering release of the agent from endolysosomes within the target cells using a photosensitiser which is selectively retained with the endolysosomal membranes. Excitation of the photosensitiser by visible light leads to disruption of the membranes via photooxidative damage thereby releasing the agent into the cytosol. This treatment enables the drugs to reach their intended subcellular target more efficiently and improves their efficacy. In this review we summarise the applications of this technique with the main emphasis placed on cancer chemotherapy.
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Affiliation(s)
| | - Caroline M Moore
- UCL Division of Surgery and Interventional Sciences, University College London, London, United Kingdom
| | - Marilena Loizidou
- UCL Division of Surgery and Interventional Sciences, University College London, London, United Kingdom
| | - Alexander J MacRobert
- UCL Division of Surgery and Interventional Sciences, University College London, London, United Kingdom
| | - Josephine H Woodhams
- UCL Division of Surgery and Interventional Sciences, University College London, London, United Kingdom
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