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Dong P, Stellmacher J, Bouchet LM, Nieke M, Kumar A, Osorio‐Blanco ER, Nagel G, Lohan SB, Teutloff C, Patzelt A, Schäfer‐Korting M, Calderón M, Meinke MC, Alexiev U. A Dual Fluorescence–Spin Label Probe for Visualization and Quantification of Target Molecules in Tissue by Multiplexed FLIM–EPR Spectroscopy. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Pin Dong
- Department of Dermatology, Venereology and Allergology Charité Universitätsmedizin Berlin corporate member of Freie Universität Berlin Humboldt-Universität zu Berlin, and Berlin Institute of Health Berlin Germany
- Freie Universität Berlin Institute of Pharmacy Berlin Germany
| | - Johannes Stellmacher
- Freie Universität Berlin Institute of Experimental Physics Department of Physics Berlin Germany
| | - Lydia M. Bouchet
- Freie Universität Berlin Institute of Chemistry and Biochemistry Berlin Germany
| | - Marius Nieke
- Freie Universität Berlin Institute of Experimental Physics Department of Physics Berlin Germany
- Humboldt-Universität zu Berlin Institute of Biology Berlin Germany
| | - Amit Kumar
- Freie Universität Berlin Institute of Chemistry and Biochemistry Berlin Germany
| | | | - Gregor Nagel
- Freie Universität Berlin Institute of Chemistry and Biochemistry Berlin Germany
| | - Silke B. Lohan
- Department of Dermatology, Venereology and Allergology Charité Universitätsmedizin Berlin corporate member of Freie Universität Berlin Humboldt-Universität zu Berlin, and Berlin Institute of Health Berlin Germany
| | - Christian Teutloff
- Freie Universität Berlin Institute of Experimental Physics Department of Physics Berlin Germany
| | - Alexa Patzelt
- Department of Dermatology, Venereology and Allergology Charité Universitätsmedizin Berlin corporate member of Freie Universität Berlin Humboldt-Universität zu Berlin, and Berlin Institute of Health Berlin Germany
| | | | - Marcelo Calderón
- Freie Universität Berlin Institute of Chemistry and Biochemistry Berlin Germany
- POLYMAT Faculty of Chemistry University of the Basque Country UPV/EHU 20018 Donostia-San Sebastián Spain
- IKERBASQUE Basque Foundation for Science 48013 Bilbao Spain
| | - Martina C. Meinke
- Department of Dermatology, Venereology and Allergology Charité Universitätsmedizin Berlin corporate member of Freie Universität Berlin Humboldt-Universität zu Berlin, and Berlin Institute of Health Berlin Germany
| | - Ulrike Alexiev
- Freie Universität Berlin Institute of Experimental Physics Department of Physics Berlin Germany
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2
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Dong P, Stellmacher J, Bouchet LM, Nieke M, Kumar A, Osorio‐Blanco ER, Nagel G, Lohan SB, Teutloff C, Patzelt A, Schäfer‐Korting M, Calderón M, Meinke MC, Alexiev U. A Dual Fluorescence-Spin Label Probe for Visualization and Quantification of Target Molecules in Tissue by Multiplexed FLIM-EPR Spectroscopy. Angew Chem Int Ed Engl 2021; 60:14938-14944. [PMID: 33544452 PMCID: PMC8251738 DOI: 10.1002/anie.202012852] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/27/2021] [Indexed: 12/30/2022]
Abstract
Simultaneous visualization and concentration quantification of molecules in biological tissue is an important though challenging goal. The advantages of fluorescence lifetime imaging microscopy (FLIM) for visualization, and electron paramagnetic resonance (EPR) spectroscopy for quantification are complementary. Their combination in a multiplexed approach promises a successful but ambitious strategy because of spin label-mediated fluorescence quenching. Here, we solved this problem and present the molecular design of a dual label (DL) compound comprising a highly fluorescent dye together with an EPR spin probe, which also renders the fluorescence lifetime to be concentration sensitive. The DL can easily be coupled to the biomolecule of choice, enabling in vivo and in vitro applications. This novel approach paves the way for elegant studies ranging from fundamental biological investigations to preclinical drug research, as shown in proof-of-principle penetration experiments in human skin ex vivo.
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Affiliation(s)
- Pin Dong
- Department of Dermatology, Venereology and AllergologyCharité Universitätsmedizin Berlincorporate member of Freie Universität BerlinHumboldt-Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
- Freie Universität BerlinInstitute of PharmacyBerlinGermany
| | - Johannes Stellmacher
- Freie Universität BerlinInstitute of Experimental PhysicsDepartment of PhysicsBerlinGermany
| | - Lydia M. Bouchet
- Freie Universität BerlinInstitute of Chemistry and BiochemistryBerlinGermany
| | - Marius Nieke
- Freie Universität BerlinInstitute of Experimental PhysicsDepartment of PhysicsBerlinGermany
- Humboldt-Universität zu BerlinInstitute of BiologyBerlinGermany
| | - Amit Kumar
- Freie Universität BerlinInstitute of Chemistry and BiochemistryBerlinGermany
| | | | - Gregor Nagel
- Freie Universität BerlinInstitute of Chemistry and BiochemistryBerlinGermany
| | - Silke B. Lohan
- Department of Dermatology, Venereology and AllergologyCharité Universitätsmedizin Berlincorporate member of Freie Universität BerlinHumboldt-Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
| | - Christian Teutloff
- Freie Universität BerlinInstitute of Experimental PhysicsDepartment of PhysicsBerlinGermany
| | - Alexa Patzelt
- Department of Dermatology, Venereology and AllergologyCharité Universitätsmedizin Berlincorporate member of Freie Universität BerlinHumboldt-Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
| | | | - Marcelo Calderón
- Freie Universität BerlinInstitute of Chemistry and BiochemistryBerlinGermany
- POLYMATFaculty of ChemistryUniversity of the Basque CountryUPV/EHU20018Donostia-San SebastiánSpain
- IKERBASQUEBasque Foundation for Science48013BilbaoSpain
| | - Martina C. Meinke
- Department of Dermatology, Venereology and AllergologyCharité Universitätsmedizin Berlincorporate member of Freie Universität BerlinHumboldt-Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
| | - Ulrike Alexiev
- Freie Universität BerlinInstitute of Experimental PhysicsDepartment of PhysicsBerlinGermany
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Besse HC, Barten-van Rijbroek AD, van der Wurff-Jacobs KMG, Bos C, Moonen CTW, Deckers R. Tumor Drug Distribution after Local Drug Delivery by Hyperthermia, In Vivo. Cancers (Basel) 2019; 11:cancers11101512. [PMID: 31600958 PMCID: PMC6826934 DOI: 10.3390/cancers11101512] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/27/2019] [Accepted: 10/02/2019] [Indexed: 02/02/2023] Open
Abstract
Tumor drug distribution and concentration are important factors for effective tumor treatment. A promising method to enhance the distribution and the concentration of the drug in the tumor is to encapsulate the drug in a temperature sensitive liposome. The aim of this study was to investigate the tumor drug distribution after treatment with various injected doses of different liposomal formulations of doxorubicin, ThermoDox (temperature sensitive liposomes) and DOXIL (non-temperature sensitive liposomes), and free doxorubicin at macroscopic and microscopic levels. Only ThermoDox treatment was combined with hyperthermia. Experiments were performed in mice bearing a human fibrosarcoma. At low and intermediate doses, the largest growth delay was obtained with ThermoDox, and at the largest dose, the largest growth delay was obtained with DOXIL. On histology, tumor areas with increased doxorubicin concentration correlated with decreased cell proliferation, and substantial variations in doxorubicin heterogeneity were observed. ThermoDox treatment resulted in higher tissue drug levels than DOXIL and free doxorubicin for the same dose. A relation with the distance to the vasculature was shown, but vessel perfusion was not always sufficient to determine doxorubicin delivery. Our results indicate that tumor drug distribution is an important factor for effective tumor treatment and that its dependence on delivery formulation merits further systemic investigation.
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Affiliation(s)
- Helena C Besse
- Center of Imaging Sciences, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands.
| | | | - Kim M G van der Wurff-Jacobs
- Center of Imaging Sciences, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
| | - Clemens Bos
- Center of Imaging Sciences, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands.
| | - Chrit T W Moonen
- Center of Imaging Sciences, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
| | - Roel Deckers
- Center of Imaging Sciences, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands.
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Singh S, Nagpal R, Manuja N, Tyagi SP. Photodynamic therapy: An adjunct to conventional root canal disinfection strategies. AUST ENDOD J 2014; 41:54-71. [PMID: 25404404 DOI: 10.1111/aej.12088] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Although chemical-based root canal disinfectants are important to reduce microbial loads and remove infected smear layer from root dentin, they have only a limited ability to eliminate biofilm bacteria, especially from root complexities. This paper explores the novel photodynamic therapy (PDT) for antimicrobial disinfection of root canals. The combination of an effective photosensitizer, the appropriate wavelength of light and ambient oxygen is the key factor in PDT. PDT uses a specific wavelength of light to activate a non-toxic dye (photosensitizer), leading to the formation of reactive oxygen species. These reactive oxygen molecules can damage bacterial proteins, membrane lipids and nucleic acids, which promote bacterial cell death. In, addition PDT may enhance cross-linking of collagen fibrils in the dentin matrix and thereby improving dentin stability. The concept of PDT is plausible and could foster new therapy concepts for endodontics. The available knowledge should enable and encourage steps forward into more clinical-oriented research and development. This article discusses PDT as related to root canal disinfection, including its components, mechanism of action, reviews the current endodontic literature and also highlights the shortcomings and advancements in PDT techniques.
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Affiliation(s)
- Shipra Singh
- Department of Conservative Dentistry and Endodontics, Kothiwal Dental College and Research Centre, Moradabad, India
| | - Rajni Nagpal
- Department of Conservative Dentistry and Endodontics, Kothiwal Dental College and Research Centre, Moradabad, India
| | - Naveen Manuja
- Department of Pediatric Dentistry, Kothiwal Dental College and Research Centre, Moradabad, India
| | - Sashi Prabha Tyagi
- Department of Conservative Dentistry and Endodontics, Kothiwal Dental College and Research Centre, Moradabad, India
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Middelburg TA, de Bruijn HS, Tettero L, van der Ploeg van den Heuvel A, Neumann HAM, de Haas ERM, Robinson DJ. Topical hexylaminolevulinate and aminolevulinic acid photodynamic therapy: complete arteriole vasoconstriction occurs frequently and depends on protoporphyrin IX concentration in vessel wall. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2013; 126:26-32. [PMID: 23892187 DOI: 10.1016/j.jphotobiol.2013.06.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 06/11/2013] [Accepted: 06/22/2013] [Indexed: 12/28/2022]
Abstract
Vascular responses to photodynamic therapy (PDT) may influence the availability of oxygen during PDT and the extent of tumor destruction after PDT. However, for topical PDT vascular effects are largely unknown. Arteriole and venule diameters were measured before and after hexylaminolevulinate (HAL) and aminolevulinic acid (ALA) PDT and related to the protoporphyrin IX (PpIX) concentration in the vessel wall. A mouse skin fold chamber model and an intravital confocal microscope allowed direct imaging of the subcutaneous vessels underlying the treated area. In both HAL and ALA groups over 60% of arterioles constricted completely, while venules generally did not respond, except for two larger veins that constricted partially. Arteriole vasoconstriction strongly correlated with PpIX fluorescence intensity in the arteriole wall. Total PpIX fluorescence intensity was significantly higher for HAL than ALA for the whole area that was imaged but not for the arteriole walls. In conclusion, complete arteriole vasoconstriction occurs frequently in both HAL and ALA based topical PDT, especially when relatively high PpIX concentrations in arteriole walls are reached. Vasoconstriction will likely influence PDT effect and should be considered in studies on topical HAL and ALA-PDT. Also, our results may redefine the vasculature as a potential secondary target for topical PDT.
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Affiliation(s)
- T A Middelburg
- Department of Dermatology, Erasmus MC, Rotterdam, The Netherlands
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Senge MO. mTHPC--a drug on its way from second to third generation photosensitizer? Photodiagnosis Photodyn Ther 2011; 9:170-9. [PMID: 22594988 DOI: 10.1016/j.pdpdt.2011.10.001] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Accepted: 10/07/2011] [Indexed: 10/15/2022]
Abstract
5,10,15,20-Tetrakis(3-hydroxyphenyl)chlorin (mTHPC, Temoporfin) is a widely investigated second generation photosensitizer. Its initial use in solution form (Foscan®) is now complemented by nanoformulations (Fospeg®, Foslip®) and new chemical derivatives related to the basic hydroxyphenylporphyrin framework. Advances in formulation, chemical modifications and targeting strategies open the way for third generation photosensitizers and give an illustrative example for the developmental process of new photoactive drugs.
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Affiliation(s)
- Mathias O Senge
- Medicinal Chemistry, Institute of Molecular Medicine, Trinity Centre for Health Sciences, Trinity College Dublin, St James's Hospital, Dublin 8, Ireland.
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