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Krasnovskaya OO, Akasov RA, Spector DV, Pavlov KG, Bubley AA, Kuzmin VA, Kostyukov AA, Khaydukov EV, Lopatukhina EV, Semkina AS, Vlasova KY, Sypalov SA, Erofeev AS, Gorelkin PV, Vaneev AN, Nikitina VN, Skvortsov DA, Ipatova DA, Mazur DM, Zyk NV, Sakharov DA, Majouga AG, Beloglazkina EK. Photoinduced Reduction of Novel Dual-Action Riboplatin Pt(IV) Prodrug. ACS APPLIED MATERIALS & INTERFACES 2023; 15:12882-12894. [PMID: 36854172 DOI: 10.1021/acsami.3c01771] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Controlled photoreduction of Pt(IV) prodrugs is a challenging task due to the possibility of targeted light-controlled activation of anticancer agents without affecting healthy tissues. Also, a conjugation of photosensitizers and clinically used platinum drugs into one Pt(IV) prodrug allows combining photodynamic therapy and chemotherapy approaches into one molecule. Herein, we designed the cisplatin-based Pt(IV) prodrug Riboplatin with tetraacetylriboflavin in the axial position. A novel Pt(IV) prodrug is able to act both as a photodynamic therapy (PDT) agent through the conversion of ground-state 3O2 to excited-state 1O2 and as an agent of photoactivated chemotherapy (PACT) through releasing of cisplatin under gentle blue light irradiation, without the requirement of a reducing agent. The light-induced behavior of Riboplatin was investigated using an electrochemical sensor in MCF-7 tumor spheroids. Photocontrolled cisplatin release and ROS generation were detected electrochemically in real time. This appears to be the first confirmation of simultaneous photoactivated release of anticancer drug cisplatin and ROS from a dual-action Pt(IV) prodrug observed from the inside of living tumor spheroids.
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Affiliation(s)
- Olga O Krasnovskaya
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
- National University of Science and Technology (MISIS), Leninskiy Prospect 4, Moscow 119049, Russia
| | - Roman A Akasov
- I.M. Sechenov First Moscow State Medical University, Trubetskaya 8-2, Moscow 119991, Russia
- Federal Scientific Research Center "Crystallography and Photonics" Russian Academy of Sciences, Leninskiy Prospect 59, Moscow 119333, Russia
| | - Daniil V Spector
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
- National University of Science and Technology (MISIS), Leninskiy Prospect 4, Moscow 119049, Russia
| | - Kirill G Pavlov
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
| | - Anna A Bubley
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
| | - Vladimir A Kuzmin
- Emanuel Institute of Biochemical Physics of the Russian Academy of Sciences, Kosygin Street, 4, Moscow 119334, Russia
| | - Alexey A Kostyukov
- Emanuel Institute of Biochemical Physics of the Russian Academy of Sciences, Kosygin Street, 4, Moscow 119334, Russia
| | - Evgeny V Khaydukov
- I.M. Sechenov First Moscow State Medical University, Trubetskaya 8-2, Moscow 119991, Russia
- Federal Scientific Research Center "Crystallography and Photonics" Russian Academy of Sciences, Leninskiy Prospect 59, Moscow 119333, Russia
| | - Elena V Lopatukhina
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
| | - Alevtina S Semkina
- Pirogov Russian National Research Medical University (RNRMU), Ostrovitianov 1, Moscow 117997, Russia
- Department of Basic and Applied Neurobiology, Serbsky National Medical Research Center for Psychiatry and Narcology, Kropot-kinskiy 23, Moscow 119034, Russia
| | - Kseniya Yu Vlasova
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
- Pirogov Russian National Research Medical University (RNRMU), Ostrovitianov 1, Moscow 117997, Russia
| | - Sergey A Sypalov
- Core Facility Center "Arktika", Northern (Arctic) Federal University, Arkhangelsk 163002, Russia
| | - Alexander S Erofeev
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
- National University of Science and Technology (MISIS), Leninskiy Prospect 4, Moscow 119049, Russia
| | - Petr V Gorelkin
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
- National University of Science and Technology (MISIS), Leninskiy Prospect 4, Moscow 119049, Russia
| | - Alexander N Vaneev
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
- National University of Science and Technology (MISIS), Leninskiy Prospect 4, Moscow 119049, Russia
| | - Vita N Nikitina
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
| | - Dmitrii A Skvortsov
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
| | - Daria A Ipatova
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
| | - Dmitrii M Mazur
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
| | - Nikolay V Zyk
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
| | - Dmitry A Sakharov
- Mendeleev University of Chemical Technology of Russia, Miusskaya sq. 9, Moscow 125047, Russia
| | - Alexander G Majouga
- Mendeleev University of Chemical Technology of Russia, Miusskaya sq. 9, Moscow 125047, Russia
| | - Elena K Beloglazkina
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
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2
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Plasmonic silica-gold core-shell nanoparticles: interaction with organic dyes for light-induced applications. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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3
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Comparing ultrafast excited state quenching of flavin 1,N 6-ethenoadenine dinucleotide and flavin adenine dinucleotide by optical spectroscopy and DFT calculations. Photochem Photobiol Sci 2022; 21:959-982. [PMID: 35218554 DOI: 10.1007/s43630-022-00187-2] [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: 05/04/2021] [Accepted: 02/01/2022] [Indexed: 10/19/2022]
Abstract
Flavins are photoenzymatic cofactors often exploiting the absorption of light to energize photoinduced redox chemistry in a variety of contexts. Both flavin adenine dinucleotide (FAD) and flavin mononucleotide (FMN) are used for this function. The study of these photoenzymes has been facilitated using flavin analogs. Most of these analogs involve modification of the flavin ring, and there is recent evidence that adenine (Ade)-modified FAD can affect enzyme turnover, but so far this has only been shown for enzymes where the adenine and flavin rings are close to each other in a stacked conformation. FAD is also stacked in aqueous solution, and its photodynamics are quite different from unstacked FAD or FMN. Oxidized photoexcited FAD decays rapidly, presumably through PET with Ade as donor and Fl* as acceptor. Definitive identification of the spectral signatures of Ade∙+ and Fl∙- radicals is elusive. Here we use the FAD analog Flavin 1,N6-Ethenoadenine Dinucleotide (εFAD) to study how different photochemical outcomes depend on the identity of the Ade moiety in stacked FAD and its analog εFAD. We have used UV-Vis transient absorption spectroscopy complemented by TD-DFT calculations to investigate the excited state evolution of the flavins. In FAD*, no radicals were observed, suggesting that FAD* does not undergo PET. εFAD* kinetics showed a broad absorption band that suggests a charge transfer state exists upon photoexcitation with evidence for radical pair formation. Surprisingly, significant triplet flavin was produced from εFAD* We hypothesize that the dipolar (ε)Ade moieties differentially modulate the singlet-triplet energy gap, resulting in different intersystem crossing rates. The additional electron density on the etheno group of εFAD supplies better orbital overlap with the flavin S1 state, accelerating charge transfer in that molecule.
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4
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Zhu M, Lu J, Zhao Y, Guo Z, Hu Y, Liu Y, Zhu C. Photochemical reactions between superoxide ions and 2,4,6-trichlorophenol in atmospheric aqueous environments. CHEMOSPHERE 2021; 279:130537. [PMID: 33862361 DOI: 10.1016/j.chemosphere.2021.130537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/04/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
The superoxide anion radical (O2•-) is an important reactive oxygen species (ROS), and participates in several chemical reactions and biological processes. In this report, O2•- was produced by irradiating riboflavin in an O2-saturated solution by ultraviolet light with a maximum emission at 365 nm. And the contribution of O2•- to 2, 4, 6-trichlorophenol (2, 4, 6-TCP) was investigated by a combination of laser flash photolysis (LFP) and UV light steady irradiation technique. The results of steady-state experiments showed that the photochemical decomposition efficiency of 2, 4, 6-TCP decreased with the increase of the initial concentration of TCP, while the increase of pH and riboflavin concentration promoted the photochemical reaction. The second-order rate constant of the reaction of the superoxide anion radical with 2, 4, 6-TCP phenoxyl radical (TCP•) was (9.9 ± 0.9) × 109 L mol-1 s-1 determined by laser flash photolysis techniques. The dechlorination efficiency was 61.5% after illuminating the mixed solution with UV light for 2 h. The conversion of 2, 4, 6-trichlorophenol was accompanied by the reductive dechlorination process induced by superoxide ions. The main steady products of the photochemical reaction of 2, 4, 6-TCP with O2•- were 2, 6-dichlorophenol (DCP), 2, 6-dichloro-1, 4-benzoquinone (DCQ) and 2, 6-dichlorohydroquinone (DCHQ). The addition process was the preferred process in the total reaction of superoxide ions with 2, 4, 6-TCP phenoxyl radical. These results indicated that the reaction of 2, 4, 6-TCP with O2•- was a potential conversion pathway and contribute to atmospheric aqueous phase chemistry.
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Affiliation(s)
- Mengyu Zhu
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Jun Lu
- Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei, 230009, PR China; Center of Analysis & Measurement, Hefei University of Technology, Hefei, 230009, PR China
| | - Yijun Zhao
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Zhi Guo
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Yadong Hu
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Ying Liu
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China
| | - Chengzhu Zhu
- School of Resource and Environmental Engineering, Hefei University of Technology, Hefei, 230009, PR China; Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei, 230009, PR China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, 230009, PR China.
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5
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Cisneros J, Chain CY, Rivas Aiello MB, Parisi J, Castrogiovanni DC, Bosio GN, Mártire DO, Vela ME. Pectin-Coated Plasmonic Nanoparticles for Photodynamic Therapy: Inspecting the Role of Serum Proteins. ACS OMEGA 2021; 6:12567-12576. [PMID: 34056407 PMCID: PMC8154119 DOI: 10.1021/acsomega.1c00542] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
Plasmonic metal nanoparticles (NPs) can be used as enhancers of the efficiency of standard photosensitizers (PSs) in photodynamic therapy (PDT). Protein corona, the adsorption layer that forms spontaneously around NPs once in contact with biological fluids, determines to a great extent the efficiency of PDT. In this work, we explore the possibility that pectin-coated Au NPs (Au@Pec NPs) could act as adjuvants in riboflavin (Rf)-based PDT by comparing the photodamage in HeLa cells cultured in the presence and in the absence of the NPs. Moreover, we investigate the impact that the preincubation of Rf and Au@Pec NPs (or Ag@Pec NPs) at two very different serum concentrations could have on cell's photodamage. Because reactive oxygen species (ROS) precursors are the excited states of the PS, the effect of proteins on the photophysics of Rf and Rf/plasmonic NPs was studied by transient absorption experiments. The beneficial effect of Au@Pec NPs in Rf-based PDT on HeLa cells cultured under standard serum conditions was demonstrated for the first time. However, the preincubation of Rf and Au@Pec NPs (or Ag@Pec NPs) with serum has undesirable results regarding the enhancement of Rf-based PDT. In this sense, we also verified that more concentrated protein conditions result in lower amounts of the triplet excited state of Rf and thus an expected lower production of ROS, which are the key elements for PDT's efficacy. These findings point out the relevance of serum concentration in the design of in vitro cell culture experiments carried out to determine the best way to combine and use potential sensitizers with plasmonic NPs to develop more effective PDTs.
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Affiliation(s)
- José
S. Cisneros
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas
(Facultad de Ciencias Exactas-UNLP-CONICET), Diagonal 113 esquina 64 S/N, 1900 La Plata, Argentina
| | - Cecilia Y. Chain
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas
(Facultad de Ciencias Exactas-UNLP-CONICET), Diagonal 113 esquina 64 S/N, 1900 La Plata, Argentina
| | - María B. Rivas Aiello
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas
(Facultad de Ciencias Exactas-UNLP-CONICET), Diagonal 113 esquina 64 S/N, 1900 La Plata, Argentina
| | - Julieta Parisi
- Instituto
Multidisciplinario de Biología Celular (CICPBA-CONICET-UNLP), Calle 526 y Camino General Belgrano, B1906APO La Plata, Argentina
| | - Daniel C. Castrogiovanni
- Instituto
Multidisciplinario de Biología Celular (CICPBA-CONICET-UNLP), Calle 526 y Camino General Belgrano, B1906APO La Plata, Argentina
| | - Gabriela N. Bosio
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas
(Facultad de Ciencias Exactas-UNLP-CONICET), Diagonal 113 esquina 64 S/N, 1900 La Plata, Argentina
| | - Daniel O. Mártire
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas
(Facultad de Ciencias Exactas-UNLP-CONICET), Diagonal 113 esquina 64 S/N, 1900 La Plata, Argentina
| | - María E. Vela
- Instituto
de Investigaciones Fisicoquímicas Teóricas y Aplicadas
(Facultad de Ciencias Exactas-UNLP-CONICET), Diagonal 113 esquina 64 S/N, 1900 La Plata, Argentina
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6
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Rivas Aiello MB, Ghilini F, Martínez Porcel JE, Giovanetti L, Schilardi PL, Mártire DO. Riboflavin-Mediated Photooxidation of Gold Nanoparticles and Its Effect on the Inactivation of Bacteria. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:8272-8281. [PMID: 32569473 DOI: 10.1021/acs.langmuir.0c01473] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Photodynamic inactivation (PDI) of microorganisms, based on the ability of photosensitizers to produce reactive oxygen species (ROS) under adequate irradiation, emerges as a promising technique to face the increasing bacterial resistance to conventional antimicrobials. In this work, we analyze the combined action of Riboflavin (Rf) and pectin-coated gold nanoparticles (PecAuNP) on Staphylococcus aureus (S. aureus) and Pseudomonas aeruginosa (P. aeruginosa) as suitable PDI strategy. We demonstrate that gold ions can be generated upon Rf-photosensitized oxidation of PecAuNP. Transient absorption spectroscopy shows that the Rf cationic radical can accept an electron from the nanoparticles to yield Au(I) ions, which in aqueous medium is disproportionate to yield Au0 and Au(III). Microbiological assays showed that the presence of PecAuNP enhanced the antibacterial activity of photoirradiated Rf toward S. aureus and P. aeruginosa, in line with the well-known antibacterial activity of gold ions. Moreover, the irradiation of Rf solutions containing about 100 μM PecAuNP enabled the solutions to be bactericidal against both bacteria.
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Affiliation(s)
- María Belén Rivas Aiello
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata and CONICET, C. C. 16, Suc. 4, (1900) La Plata, Argentina
| | - Fiorela Ghilini
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata and CONICET, C. C. 16, Suc. 4, (1900) La Plata, Argentina
| | - Joaquín E Martínez Porcel
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata and CONICET, C. C. 16, Suc. 4, (1900) La Plata, Argentina
| | - Lisandro Giovanetti
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata and CONICET, C. C. 16, Suc. 4, (1900) La Plata, Argentina
| | - Patricia L Schilardi
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata and CONICET, C. C. 16, Suc. 4, (1900) La Plata, Argentina
| | - Daniel O Mártire
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata and CONICET, C. C. 16, Suc. 4, (1900) La Plata, Argentina
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7
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Bialas C, Barnard DT, Auman DB, McBride RA, Jarocha LE, Hore PJ, Dutton PL, Stanley RJ, Moser CC. Ultrafast flavin/tryptophan radical pair kinetics in a magnetically sensitive artificial protein. Phys Chem Chem Phys 2019; 21:13453-13461. [PMID: 31187821 PMCID: PMC7301759 DOI: 10.1039/c9cp01916b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Radical pair formation and decay are implicated in a wide range of biological processes including avian magnetoreception. However, studying such biological radical pairs is complicated by both the complexity and relative fragility of natural systems. To resolve open questions about how natural flavin-amino acid radical pair systems are engineered, and to create new systems with novel properties, we developed a stable and highly adaptable de novo artificial protein system. These protein maquettes are designed with intentional simplicity and transparency to tolerate aggressive manipulations that are impractical or impossible in natural proteins. Here we characterize the ultrafast dynamics of a series of maquettes with differing electron-transfer distance between a covalently ligated flavin and a tryptophan in an environment free of other potential radical centers. We resolve the spectral signatures of the cysteine-ligated flavin singlet and triplet states and reveal the picosecond formation and recombination of singlet-born radical pairs. Magnetic field-sensitive triplet-born radical pair formation and recombination occurs at longer timescales. These results suggest that both triplet- and singlet-born radical pairs could be exploited as biological magnetic sensors.
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Affiliation(s)
- Chris Bialas
- Johnson Research Foundation, Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
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8
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Martínez Porcel JE, Rivas Aiello MB, Arce VB, Di Silvio D, Moya SE, Mártire DO. Effect of hybrid SiO2@Ag nanoparticles with raspberry-like morphology on the excited states of the photosensitizers Rose Bengal and riboflavin. NEW J CHEM 2019. [DOI: 10.1039/c9nj01013k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ag+ is released due to a charge transfer process from the triplet state of adsorbed riboflavin to the silver nanoparticles.
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Affiliation(s)
- Joaquín E. Martínez Porcel
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)
- Universidad Nacional de La Plata
- La Plata
- Argentina
- Soft Matter Nanotechnology
| | - María Belén Rivas Aiello
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)
- Universidad Nacional de La Plata
- La Plata
- Argentina
| | - Valeria B. Arce
- Centro de Investigaciones Ópticas (CIOp)
- (CONICET La Plata – CIC – UNLP)
- Gonnet
- Argentina
| | - Desire Di Silvio
- Soft Matter Nanotechnology
- Centre for Cooperative Research in Biomaterials
- CICbiomaGUNE Unidad Biosuperficies
- 20009 San Sebastian
- Spain
| | - Sergio E. Moya
- Soft Matter Nanotechnology
- Centre for Cooperative Research in Biomaterials
- CICbiomaGUNE Unidad Biosuperficies
- 20009 San Sebastian
- Spain
| | - Daniel O. Mártire
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)
- Universidad Nacional de La Plata
- La Plata
- Argentina
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9
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Westberg M, Bregnhøj M, Etzerodt M, Ogilby PR. Temperature Sensitive Singlet Oxygen Photosensitization by LOV-Derived Fluorescent Flavoproteins. J Phys Chem B 2017; 121:2561-2574. [PMID: 28257211 DOI: 10.1021/acs.jpcb.7b00561] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Optogenetic sensitizers that selectively produce a given reactive oxygen species (ROS) constitute a promising tool for studying cell signaling processes with high levels of spatiotemporal control. However, to harness the full potential of this tool for live cell studies, the photophysics of currently available systems need to be explored further and optimized. Of particular interest in this regard, are the flavoproteins miniSOG and SOPP, both of which (1) contain the chromophore flavin mononucleotide, FMN, in a LOV-derived protein enclosure, and (2) photosensitize the production of singlet oxygen, O2(a1Δg). Here we present an extensive experimental study of the singlet and triplet state photophysics of FMN in SOPP and miniSOG over a physiologically relevant temperature range. Although changes in temperature only affect the singlet excited state photophysics slightly, the processes that influence the deactivation of the triplet excited state are more sensitive to temperature. Most notably, for both proteins, the rate constant for quenching of 3FMN by ground state oxygen, O2(X3Σg-), increases ∼10-fold upon increasing the temperature from 10 to 43 °C, while the oxygen-independent channels of triplet state deactivation are less affected. As a consequence, this increase in temperature results in higher yields of O2(a1Δg) formation for both SOPP and miniSOG. We also show that the quantum yields of O2(a1Δg) production by both miniSOG and SOPP are mainly limited by the fraction of FMN triplet states quenched by O2(X3Σg-). The results presented herein provide a much-needed quantitative framework that will facilitate the future development of optogenetic ROS sensitizers.
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Affiliation(s)
- Michael Westberg
- Department of Chemistry, Aarhus University , DK-8000 Aarhus, Denmark
| | - Mikkel Bregnhøj
- Department of Chemistry, Aarhus University , DK-8000 Aarhus, Denmark
| | - Michael Etzerodt
- Department of Molecular Biology and Genetics, Aarhus University , DK-8000 Aarhus, Denmark
| | - Peter R Ogilby
- Department of Chemistry, Aarhus University , DK-8000 Aarhus, Denmark
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10
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Caffeine metabolites not caffeine protect against riboflavin photosensitized oxidative damage related to skin and eye health. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 163:277-83. [DOI: 10.1016/j.jphotobiol.2016.08.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 08/23/2016] [Accepted: 08/25/2016] [Indexed: 11/22/2022]
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11
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Valle L, Morán Vieyra FE, Borsarelli CD. Nanoenvironmental effect in AOT reverse micelles on the triplet excited state properties of flavins and quenching by molecular oxygen. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3575] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Lorena Valle
- Instituto de Bionanotecnología, INBIONATEC-CONICET; Universidad Nacional de Santiago del Estero (UNSE); RN9, Km 1125 G4206XCP Santiago del Estero Argentina
| | - Faustino E. Morán Vieyra
- Instituto de Bionanotecnología, INBIONATEC-CONICET; Universidad Nacional de Santiago del Estero (UNSE); RN9, Km 1125 G4206XCP Santiago del Estero Argentina
| | - Claudio D. Borsarelli
- Instituto de Bionanotecnología, INBIONATEC-CONICET; Universidad Nacional de Santiago del Estero (UNSE); RN9, Km 1125 G4206XCP Santiago del Estero Argentina
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12
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Mollahosseini M, Karunaratne E, Gibson GN, Gascón JA, Papadimitrakopoulos F. Fullerene-Assisted Photoinduced Charge Transfer of Single-Walled Carbon Nanotubes through a Flavin Helix. J Am Chem Soc 2016; 138:5904-15. [DOI: 10.1021/jacs.5b13496] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mehdi Mollahosseini
- Nanomaterials Optoelectronics Laboratory (NOEL), Polymer Program,
Institute of Materials Science, ‡Department of Chemistry, and §Department of Physics, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Erandika Karunaratne
- Nanomaterials Optoelectronics Laboratory (NOEL), Polymer Program,
Institute of Materials Science, ‡Department of Chemistry, and §Department of Physics, University of Connecticut, Storrs, Connecticut 06269, United States
| | - George N. Gibson
- Nanomaterials Optoelectronics Laboratory (NOEL), Polymer Program,
Institute of Materials Science, ‡Department of Chemistry, and §Department of Physics, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Jose A. Gascón
- Nanomaterials Optoelectronics Laboratory (NOEL), Polymer Program,
Institute of Materials Science, ‡Department of Chemistry, and §Department of Physics, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Fotios Papadimitrakopoulos
- Nanomaterials Optoelectronics Laboratory (NOEL), Polymer Program,
Institute of Materials Science, ‡Department of Chemistry, and §Department of Physics, University of Connecticut, Storrs, Connecticut 06269, United States
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Westberg M, Holmegaard L, Pimenta FM, Etzerodt M, Ogilby PR. Rational design of an efficient, genetically encodable, protein-encased singlet oxygen photosensitizer. J Am Chem Soc 2015; 137:1632-42. [PMID: 25575190 DOI: 10.1021/ja511940j] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Singlet oxygen, O(2)(a(1)Δ(g)), plays a key role in many processes of cell signaling. Limitations in mechanistic studies of such processes are generally associated with the difficulty of controlling the amount and location of O(2)(a(1)Δ(g)) production in or on a cell. As such, there is great need for a system that (a) selectively produces O(2)(a(1)Δ(g)) in appreciable and accurately quantifiable yields and (b) can be localized in a specific place at the suborganelle level. A genetically encodable, protein-encased photosensitizer is one way to achieve this goal. Through a systematic and rational approach involving mutations to a LOV2 protein that binds the chromophore flavin mononucleotide (FMN), we have developed a promising photosensitizer that overcomes many of the problems that affect related systems currently in use. Specifically, by decreasing the extent of hydrogen bonding between FMN and a specific amino acid residue in the local protein environment, we decrease the susceptibility of FMN to undesired photoinitiated electron-transfer reactions that kinetically compete with O(2)(a(1)Δ(g)) production. As a consequence, our protein-encased FMN system produces O(2)(a(1)Δ(g)) with the uniquely large quantum efficiency of 0.25 ± 0.03. We have also quantified other key photophysical parameters that characterize this sensitizer system, including unprecedented H(2)O/D(2)O solvent isotope effects on the O(2)(a(1)Δ(g)) formation kinetics and yields. As such, our results facilitate future systematic developments in this field.
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Affiliation(s)
- Michael Westberg
- Center for Oxygen Microscopy and Imaging, Chemistry Department and ‡Department of Molecular Biology and Genetics, Aarhus University , DK-8000, Aarhus, Denmark
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Sengupta C, Sarangi MK, Sau A, Mandal D, Basu S. A case study of photo induced electron transfer between riboflavin and aliphatic amine: Deciphering different mechanisms of ET operating from femtosecond to microsecond time domain. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2014.09.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Cardoso DR, Scurachio RS, Santos WG, Homem-de-Mello P, Skibsted LH. Riboflavin-photosensitized oxidation is enhanced by conjugation in unsaturated lipids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:2268-2275. [PMID: 23402498 DOI: 10.1021/jf305280x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Methyl esters of polyunsaturated fatty acids were found to quench triplet-excited riboflavin ((3)Rib) in efficient bimolecular reactions with rate constants, as determined by laser flash photolysis, linearly depending upon the number of bis-allylic methylene (from 1 to 5). Deactivation of (3)Rib is predicted by combining the experimental second-order rate constants k2 determined for acetonitrile/water (8:2, v/v) at 25 °C with density functional theory (DFT) calculations of bond dissociation energy to have an upper limiting value of 1.22 × 10(7) L mol(-1) s(-1) for hydrogen abstraction from bis-allylic methylene groups in unsaturated lipid by (3)Rib. Still, ergosterol was found to deactivate (3)Rib with k2 = 6.2 × 10(8) L mol(-1) s(-1), which is more efficient than cholesterol, with 6.9 × 10(7) L mol(-1) s(-1). Likewise conjugated (9E,11E) methyl linoleate (CLA) reacts with 3.3 × 10(7) L mol(-1) s(-1), 30 times more efficient than previously found for methyl α-linolenate. Conjugation as in CLA and ergosterol is concluded to enhance (3)Rib deactivation, and dietary plant sterols and CLA may accordingly be important macronutrients for eye and skin health, protecting against light exposure through efficient deactivation of (3)Rib.
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Affiliation(s)
- Daniel R Cardoso
- Instituto de Química de São Carlos, Universidade de São Paulo , Avenida Trabalhador São Carlense 400, CP 780, CEP 13560-970, São Carlos, São Paulo (SP), Brazil
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