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Kirillin M, Kurakina D, Khilov A, Orlova A, Shakhova M, Orlinskaya N, Sergeeva E. Red and blue light in antitumor photodynamic therapy with chlorin-based photosensitizers: a comparative animal study assisted by optical imaging modalities. BIOMEDICAL OPTICS EXPRESS 2021; 12:872-892. [PMID: 33680547 PMCID: PMC7901330 DOI: 10.1364/boe.411518] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 12/08/2020] [Accepted: 12/14/2020] [Indexed: 05/10/2023]
Abstract
The goal of this study is a comparative analysis of the efficiency of the PDT protocols for CT26 tumor model treatment in Balb/c mice employing red and blue light with both topical and intravenous administration of chlorin-based photosensitizers (PSs). The considered protocols include the doses of 250 J/cm2 delivered at 660 nm, 200 J/cm2 delivered at 405 nm, and 250 J/cm2 delivered at both wavelengths with equal energy density contribution. Dual-wavelength fluorescence imaging was employed to estimate both photobleaching efficiency, typical photobleaching rates and the procedure impact depth, while optical coherence tomography with angiography modality (OCT-A) was employed to monitor the tumor vasculature response for up to 7 days after the procedure with subsequent histology inspection. Red light or dual-wavelength PDT regimes with intravenous PS injection were demonstrated to provide the most pronounced tumor response among all the considered cases. On the contrary, blue light regimes were demonstrated to be most efficient among topical application and irradiation only regimes. Tumor size dynamics for different groups is in good agreement with the tumor response predictions based on OCT-A taken in 24h after exposure and the results of histology analysis performed in 7 days after the exposure.
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Affiliation(s)
- Mikhail Kirillin
- Institute of Applied Physics RAS, 46 Ulyanov St., Nizhny Novgorod, 603950, Russia
| | - Daria Kurakina
- Institute of Applied Physics RAS, 46 Ulyanov St., Nizhny Novgorod, 603950, Russia
| | - Aleksandr Khilov
- Institute of Applied Physics RAS, 46 Ulyanov St., Nizhny Novgorod, 603950, Russia
| | - Anna Orlova
- Institute of Applied Physics RAS, 46 Ulyanov St., Nizhny Novgorod, 603950, Russia
| | - Maria Shakhova
- Institute of Applied Physics RAS, 46 Ulyanov St., Nizhny Novgorod, 603950, Russia
- Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Sq., Nizhny Novgorod, 603950, Russia
| | - Natalia Orlinskaya
- Institute of Applied Physics RAS, 46 Ulyanov St., Nizhny Novgorod, 603950, Russia
- Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Sq., Nizhny Novgorod, 603950, Russia
| | - Ekaterina Sergeeva
- Institute of Applied Physics RAS, 46 Ulyanov St., Nizhny Novgorod, 603950, Russia
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Huang MH, Liu PY, Wu SN. Characterization of Perturbing Actions by Verteporfin, a Benzoporphyrin Photosensitizer, on Membrane Ionic Currents. Front Chem 2019; 7:566. [PMID: 31508407 PMCID: PMC6714490 DOI: 10.3389/fchem.2019.00566] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 07/25/2019] [Indexed: 01/13/2023] Open
Abstract
Verteporfin (VP), a benzoporphyrin derivative, has been clinically tailored as a photosensitizer and recently known to suppress YAP-TEAD complex accompanied by suppression of the growth in an array of neoplastic cells. However, the detailed information is little available regarding possible modifications of it and its related compounds on transmembrane ionic currents, despite its growing use in clinical settings. In this study, from whole cell recordings, VP (0.3-100 μM) increased the amplitude of Ca2+-activated K+ currents (I K(Ca)) in pituitary tumor (GH3) cells in a concentration-dependent manner with an EC50 value of 2.4 μM. VP-stimulated I K(Ca) in these cells was suppressed by further addition of either paxilline, iberiotoxin, or dithiothreitol, but not by that of tobultamide or TRAM-39. VP at a concentration of 10 μM mildly suppressed the amplitude of delayed-rectifier K+ current; however, it had minimal effects on M-type K+ current. In cell-attached current recordings, addition of VP to the recording medium enhanced the activity of large-conductance Ca2+-activated K+ (BKCa) channels. In the presence of VP, additional illumination with light intensity of 5.5 mW/cm2 raised the probability of BKCa-channel openings further. Addition of VP decreased the peak amplitude of L-type Ca2+ current together with slowed inactivation time course of the current; however, it failed to modify voltage-gated Na+ current. Illumination of GH3 cells in continued presence of VP also induced a non-selective cation current. Additionally, VP increased the activity of BKCa channels in human 13-06-MG glioma cells with an EC50 value of 1.9 μM. Therefore, the effects of VP on ionic currents described herein tend to be upstream of its inhibition of YAP-TEAD complex and they are conceivably likely to contribute to the underlying mechanisms through which it and its structurally similar compounds effect the modifications in functional activities of pituitary or glial neoplastic cells, if the in vivo findings occur.
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Affiliation(s)
- Mei-Han Huang
- College of Medical and Health Sciences, Fooyin University, Kaohsiung City, Taiwan
| | - Ping-Yen Liu
- Division of Cardiovascular Medicine, National Cheng Kung University Medical College, Tainan City, Taiwan
| | - Sheng-Nan Wu
- Institute of Basic Medical Sciences, National Cheng Kung University Medical College, Tainan City, Taiwan.,Department of Physiology, National Cheng Kung University Medical College, Tainan City, Taiwan
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Roth S, Hadass O, Cohen M, Verbarg J, Wilsey J, Danielli A. Improving the Sensitivity of Fluorescence-Based Immunoassays by Photobleaching the Autofluorescence of Magnetic Beads. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1803751. [PMID: 30411493 DOI: 10.1002/smll.201803751] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 10/24/2018] [Indexed: 05/11/2023]
Abstract
In fluorescence-based assays, usually a target molecule is captured using a probe conjugated to a capture surface, and then detected using a second fluorescently labeled probe. One of the most common capture surfaces is a magnetic bead. However, magnetic beads exhibit strong autofluorescence, which often overlaps with the emission of the reporter fluorescent dyes and limits the analytical performance of the assay. Here, several widely used magnetic beads are photobleached and their autofluorescence is reduced to 1% of the initial value. Their autofluorescence properties, including their photobleaching decay rates and autofluorescence spectra pre- and post-photobleaching, and the stability of the photobleaching over a period of two months are analyzed. The photobleached beads are stable over time and their surface functionality is retained. In a high-sensitivity LX-200 system using photobleached magnetic beads, human interleukin-8 is detected with a threefold improvement in detection limit and signal-to-noise ratio over results achievable with nonbleached beads. Since many contemporary immunoassays rely on magnetic beads as capture surfaces, prebleaching the beads may significantly improve the analytical performance of these assays. Moreover, nonmagnetic beads with low autofluorescence are also successfully photobleached, suggesting that photobleaching can be applied to various capture surfaces used in fluorescence-based assays.
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Affiliation(s)
- Shira Roth
- Faculty of Engineering, Bar-Ilan University, Max and Anna Webb Street, Ramat Gan, 5290002, Israel
| | - Orr Hadass
- MagBiosense, Inc., 4320 Forest Park Ave., Suite 304, St. Louis, MO, 63108, USA
| | - Meir Cohen
- Faculty of Engineering, Bar-Ilan University, Max and Anna Webb Street, Ramat Gan, 5290002, Israel
| | - Jasenka Verbarg
- MagBiosense, Inc., 4320 Forest Park Ave., Suite 304, St. Louis, MO, 63108, USA
| | - Jennifer Wilsey
- MagBiosense, Inc., 4320 Forest Park Ave., Suite 304, St. Louis, MO, 63108, USA
| | - Amos Danielli
- Faculty of Engineering, Bar-Ilan University, Max and Anna Webb Street, Ramat Gan, 5290002, Israel
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Labouta HI, Sarsons C, Kennard J, Gomez-Garcia MJ, Villar K, Lee H, Cramb DT, Rinker KD. Understanding and improving assays for cytotoxicity of nanoparticles: what really matters? RSC Adv 2018; 8:23027-23039. [PMID: 35540163 PMCID: PMC9081595 DOI: 10.1039/c8ra03849j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 06/16/2018] [Indexed: 11/21/2022] Open
Abstract
Despite years of excellent individual studies, the impact of nanoparticle (NP) cytotoxicity studies remains limited by inconsistent data collection and analysis. It is often unclear how exposure conditions can be used to determine cytotoxicity quantitatively. Discrepancies due to using different measurement conditions, readouts and controls to characterize NP interactions with cells lead to further challenges. To examine which parameters are critical in NP cytotoxicity studies, we have chosen to examine two NP types (liposomes and quantum dots) at different concentrations incubated with two primary vascular endothelial cells, HUVEC and HMVEC-C for a standard time of 24 h. We paid close attention to the effects of positive controls and cell association on interpretation of cytotoxicity data. Various cellular responses (ATP content, oxidative stress, mitochondrial toxicity, and phospholipidosis) were measured in parallel. Interestingly, cell association data varied significantly with the different image analyses. However, cytotoxicity responses could all be correlated with exposure concentration. Cell type did have an effect on cytotoxicity reports. Most significantly, NP cytotoxicity results varied with the inclusion or exclusion of positive controls. In the absence of positive controls, one tends to emphasize small changes in cell responses to NPs.
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Affiliation(s)
- Hagar I Labouta
- Department of Chemistry, Faculty of Science, University of Calgary Calgary Canada
- Biomedical Engineering, University of Calgary Calgary Canada
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University Alexandria Egypt
| | | | - Jacob Kennard
- Biomedical Engineering, University of Calgary Calgary Canada
| | | | - Kenrick Villar
- Biomedical Engineering, University of Calgary Calgary Canada
| | - Hyungbok Lee
- Biomedical Engineering, University of Calgary Calgary Canada
| | - David T Cramb
- Department of Chemistry, Faculty of Science, University of Calgary Calgary Canada
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary Calgary Canada
| | - Kristina D Rinker
- Biomedical Engineering, University of Calgary Calgary Canada
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary Calgary Canada
- Department of Biochemistry and Molecular Biology, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary Calgary Canada
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Labouta HI, Gomez-Garcia MJ, Sarsons CD, Nguyen T, Kennard J, Ngo W, Terefe K, Iragorri N, Lai P, Rinker KD, Cramb DT. Surface-grafted polyethylene glycol conformation impacts the transport of PEG-functionalized liposomes through a tumour extracellular matrix model. RSC Adv 2018; 8:7697-7708. [PMID: 35539117 PMCID: PMC9078461 DOI: 10.1039/c7ra13438j] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 02/13/2018] [Indexed: 12/29/2022] Open
Abstract
The effect of surface PEGylation on nanoparticle transport through an extracellular matrix (ECM) is an important determinant for tumor targeting success. Fluorescent stealth liposomes (base lipid DOPC) were prepared incorporating different proportions of PEG-grafted lipids (2.5, 5 and 10% of the total lipid content) for a series of PEG molecular weights (1000, 2000 and 5000 Da). The ECM was modelled using a collagen matrix. The kinetics of PEGylated liposome adhesion to and transport in collagen matrices were tracked using fluorescence correlation spectroscopy (FCS) and confocal microscopy, respectively. Generalized least square regressions were used to determine the temporal correlations between PEG molecular weight, surface density and conformation, and the liposome transport in a collagen hydrogel over 15 hours. PEG conformation determined the interaction of liposomes with the collagen hydrogel and their transport behaviour. Interestingly, liposomes with mushroom PEG conformation accumulated on the interface of the collagen hydrogel, creating a dense liposomal front with short diffusion distances into the hydrogels. On the other hand, liposomes with dense brush PEG conformation interacted to a lesser extent with the collagen hydrogel and diffused to longer distances. In conclusion, a better understanding of PEG surface coating as a modifier of transport in a model ECM matrix has resulted. This knowledge will improve design of future liposomal drug carrier systems. The effect of surface PEGylation on nanoparticle transport through an extracellular matrix (ECM) is an important determinant for tumor targeting success.![]()
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Affiliation(s)
- Hagar I. Labouta
- Department of Chemistry
- Faculty of Science
- University of Calgary
- Canada
- Biomedical Engineering
| | | | | | - Trinh Nguyen
- Department of Chemistry
- Faculty of Science
- University of Calgary
- Canada
| | | | - Wayne Ngo
- Department of Chemistry
- Faculty of Science
- University of Calgary
- Canada
| | | | - Nicolas Iragorri
- Health Technology Assessment Unit
- Department of Community Health Sciences
- Cumming School of Medicine
- University of Calgary
- Canada
| | - Patrick Lai
- Department of Biological Sciences
- University of Calgary
- Canada
| | - Kristina D. Rinker
- Biomedical Engineering
- University of Calgary
- Canada
- Department of Physiology and Pharmacology
- University of Calgary
| | - David T. Cramb
- Department of Chemistry
- Faculty of Science
- University of Calgary
- Canada
- Department of Physiology and Pharmacology
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Evaluation of nanoencapsulated verteporfin’s cytotoxicity using a microfluidic system. J Pharm Biomed Anal 2016; 127:39-48. [DOI: 10.1016/j.jpba.2016.02.052] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 02/08/2016] [Accepted: 02/28/2016] [Indexed: 01/09/2023]
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Abstract
Light can be a powerful therapeutic and diagnostic tool. Light-sensitive molecules can be used to develop locally targeted cancer therapeutics. This approach is known as photodynamic therapy (PDT). Similarly, it is possible to diagnose diseases and track the course of treatment in vivo using ligh-sensitive molecules. This methodology is referred to as photodynamic diagnosis (PDD). Despite the potential, many PDT and PDD agents have imperfect physiochemical properties for their successful clinical application. Nanotechnology may solve these issues by improving the viability of PDT and PDD. This review summarizes the current state of PDT and PDD development, the integration of nanotechnology in the field, and the prospective future applications, demonstrating the potential of PDT and PDD for improved cancer treatment and diagnosis.
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