1
|
Orfanoudaki M, Alilou M, Hartmann A, Mayr J, Karsten U, Nguyen-Ngoc H, Ganzera M. Isolation and Structure Elucidation of Novel Mycosporine-like Amino Acids from the Two Intertidal Red Macroalgae Bostrychia scorpioides and Catenella caespitosa. Mar Drugs 2023; 21:543. [PMID: 37888478 PMCID: PMC10608480 DOI: 10.3390/md21100543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/12/2023] [Accepted: 10/15/2023] [Indexed: 10/28/2023] Open
Abstract
This study presents a phytochemical survey of two common intertidal red algal species, Bostrychia scorpioides and Catenella caespitosa, regarding their MAA (mycosporine-like amino acid) composition, which are known as biogenic sunscreen compounds. Six novel MAAs from Bostrychia scorpioides named bostrychines and two novel MAAs from Catenella caespitosa named catenellines were isolated using a protocol which included silica gel column chromatography, flash chromatography on reversed phase material and semipreparative HPLC (High-Performance Liquid Chromatography). The structure of the novel MAAs was elucidated using NMR (Nuclear Magnetic Resonance) and HR-MS (High-Resolution Mass Spectrometry), and their absolute configuration was confirmed by ECD (Electronic Circular Dichroism). All isolated MAAs possess a cyclohexenimine scaffold, and the metabolites from B. scorpioides are related to the known MAAs bostrychines A-F, which contain glutamine, glutamic acid and/or threonine in their side chains. The new MAAs from C. caespitosa contain taurine, an amino sulfonic acid that is also present in another MAA isolated from this species, namely, catenelline. Previous and new data confirm that intertidal red algae are chemically rich in MAAs, which explains their high tolerance against biologically harmful ultraviolet radiation.
Collapse
Affiliation(s)
- Maria Orfanoudaki
- Institute of Pharmacy, Pharmacognosy, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria; (M.O.); (M.A.); (A.H.); (J.M.); (H.N.-N.)
| | - Mostafa Alilou
- Institute of Pharmacy, Pharmacognosy, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria; (M.O.); (M.A.); (A.H.); (J.M.); (H.N.-N.)
| | - Anja Hartmann
- Institute of Pharmacy, Pharmacognosy, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria; (M.O.); (M.A.); (A.H.); (J.M.); (H.N.-N.)
| | - Julia Mayr
- Institute of Pharmacy, Pharmacognosy, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria; (M.O.); (M.A.); (A.H.); (J.M.); (H.N.-N.)
| | - Ulf Karsten
- Institute of Biological Sciences, Applied Ecology & Phycology, University of Rostock, Albert-Einstein-Str. 3, 18059 Rostock, Germany;
| | - Hieu Nguyen-Ngoc
- Institute of Pharmacy, Pharmacognosy, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria; (M.O.); (M.A.); (A.H.); (J.M.); (H.N.-N.)
- Faculty of Pharmacy, Phenikaa University, Hanoi 12116, Vietnam
- A&A Green Phoenix Group JSC, Phenikaa Research and Technology Institute (PRATI), No.167 Hoang Ngan, Trung Hoa, Cau Giay, Hanoi 11313, Vietnam
| | - Markus Ganzera
- Institute of Pharmacy, Pharmacognosy, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria; (M.O.); (M.A.); (A.H.); (J.M.); (H.N.-N.)
| |
Collapse
|
2
|
Whittock AL, Cowden AM, Wills M, Stavros VG. Examining the substituent effect on mycosporine-inspired ultraviolet filters. Phys Chem Chem Phys 2023; 25:7401-7406. [PMID: 36846923 DOI: 10.1039/d2cp05934g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Current organic ultraviolet (UV) filters found in sunscreen formulations suffer a number of drawbacks. In this work, we have synthesised four biomimetic molecules built on the mycosporine molecular scaffold (a natural UV filter) with varying substituents at one of the carbons on the ring and investigated their photoprotective properties. From our findings, we infer design guidelines which may have a direct result on the production of next generation UV filters.
Collapse
Affiliation(s)
- Abigail L Whittock
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK. .,Analytical Science Centre for Doctoral Training, Senate House, University of Warwick, Coventry, CV4 7AL, UK
| | - Adam M Cowden
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK. .,Molecular Analytical Science Centre for Doctoral Training, Senate House, University of Warwick, Coventry, CV4 7AL, UK
| | - Martin Wills
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK.
| | | |
Collapse
|
3
|
Whittock AL, Abiola TT, Stavros VG. A Perspective on Femtosecond Pump-Probe Spectroscopy in the Development of Future Sunscreens. J Phys Chem A 2022; 126:2299-2308. [PMID: 35394773 PMCID: PMC9036518 DOI: 10.1021/acs.jpca.2c01000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Given
the negative impacts of overexposure to ultraviolet radiation
(UVR) on humans, sunscreens have become a widely used product. Certain
ingredients within sunscreens are responsible for photoprotection
and these are known, collectively herein, as ultraviolet (UV) filters.
Generally speaking, organic UV filters work by absorbing the potentially
harmful UVR and dissipating this energy as harmless heat. This process
happens on picosecond time scales and so femtosecond pump–probe
spectroscopy (FPPS) is an ideal technique for tracking this energy
conversion in real time. Coupling FPPS with complementary techniques,
including steady-state spectroscopy and computational methods, can
provide a detailed mechanistic picture of how UV filters provide photoprotection.
As such, FPPS is crucial in aiding the future design of UV filters.
This Perspective sheds light on the advancements made over the past
two years on both approved and nature-inspired UV filters. Moreover,
we suggest where FPPS can be further utilized within sunscreen applications
for future considerations.
Collapse
Affiliation(s)
- Abigail L Whittock
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom.,Analytical Science Centre for Doctoral Training, Senate House, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Temitope T Abiola
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Vasilios G Stavros
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| |
Collapse
|
4
|
Xie BB, Tang XF, Liu XY, Chang XP, Cui G. Mechanistic photophysics and photochemistry of unnatural bases and sunscreen molecules: insights from electronic structure calculations. Phys Chem Chem Phys 2021; 23:27124-27149. [PMID: 34849517 DOI: 10.1039/d1cp03994f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photophysics and photochemistry are basic subjects in the study of light-matter interactions and are ubiquitous in diverse fields such as biology, energy, materials, and environment. A full understanding of mechanistic photophysics and photochemistry underpins many recent advances and applications. This contribution first provides a short discussion on the theoretical calculation methods we have used in relevant studies, then we introduce our latest progress on the mechanistic photophysics and photochemistry of two classes of molecular systems, namely unnatural bases and sunscreens. For unnatural bases, we disclose the intrinsic driving forces for the ultrafast population to reactive triplet states, impacts of the position and degree of chalcogen substitutions, and the effects of complex environments. For sunscreen molecules, we reveal the photoprotection mechanisms that dissipate excess photon energy to the surroundings by ultrafast internal conversion to the ground state. Finally, relevant theoretical challenges and outlooks are discussed.
Collapse
Affiliation(s)
- Bin-Bin Xie
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou 311231, Zhejiang, P. R. China.
| | - Xiu-Fang Tang
- Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou 311231, Zhejiang, P. R. China.
| | - Xiang-Yang Liu
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan, 610068, China
| | - Xue-Ping Chang
- College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, P. R. China
| | - Ganglong Cui
- Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
| |
Collapse
|
5
|
Vione D, Minero C, Carena L. Fluorophores in surface freshwaters: importance, likely structures, and possible impacts of climate change. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2021; 23:1429-1442. [PMID: 34490433 DOI: 10.1039/d1em00273b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fluorescence spectroscopy is one of the most useful techniques currently available for the characterisation of organic matter in natural water samples, because it combines easy availability of instrumentation, high sensitivity and limited requirements for sample treatment. The main fluorophores that can be found in natural waters are usually proteins (and/or free amino acids) and humic substances (humic and fulvic acids). The identification of these fluorescent compounds in water samples helps to obtain information about, among others, biological activity in the water body, possible transport of organic matter from soil, and the phenomenon of photobleaching that decreases both the absorbance and (usually) the fluorescence of natural organic matter. Interestingly, all these phenomena can be affected by climate change, which could alter to different extents the ratio between aquagenic and pedogenic fluorophores. Several events induced by warming in natural waters (and especially lake water) could enhance algal growth, thereby also enhancing the production of aquagenic organic matter. Intense precipitation events could increase the export of pedogenic material to surface waters, while photobleaching would be enhanced in the epilimnion of lakes when summer stratification becomes longer and more stable because of higher temperatures. Interestingly, photobleaching affects humic substances to a higher extent compared to protein-like material, thus protein fluorescence signals could be more preserved in stratified waters.
Collapse
Affiliation(s)
- Davide Vione
- Dipartimento di Chimica, Università di Torino, Via P. Giuria 5, 10125 Torino, Italy.
| | - Claudio Minero
- Dipartimento di Chimica, Università di Torino, Via P. Giuria 5, 10125 Torino, Italy.
| | - Luca Carena
- Dipartimento di Chimica, Università di Torino, Via P. Giuria 5, 10125 Torino, Italy.
| |
Collapse
|
6
|
Jin C, Kim S, Moon S, Jin H, Hahn JS. Efficient production of shinorine, a natural sunscreen material, from glucose and xylose by deleting HXK2 encoding hexokinase in Saccharomyces cerevisiae. FEMS Yeast Res 2021; 21:6382129. [PMID: 34612490 DOI: 10.1093/femsyr/foab053] [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: 07/15/2021] [Accepted: 10/01/2021] [Indexed: 11/14/2022] Open
Abstract
Mycosporine-like amino acids (MAAs), microbial secondary metabolites with ultraviolet (UV) absorption properties, are promising natural sunscreen materials. Due to the low efficiency of extracting MAAs from natural producers, production in heterologous hosts has recently received attention. Shinorine is a well characterized MAA with strong UV-A absorption property. Previous, we developed Saccharomyces cerevisiae strain producing shinorine by introducing four shinorine biosynthetic genes from cyanobacterium Nostoc punctiforme. Shinorine is produced from sedoheptulose 7-phosphate (S7P), an intermediate in the pentose phosphate pathway. Shinorine production was greatly improved by using xylose as a co-substrate, which can increase the S7P pool. However, due to a limited xylose-utilizing capacity of the engineered strain, glucose was used as a co-substrate to support cell growth. In this study, we further improved shinorine production by attenuating glucose catabolism via glycolysis, which can redirect the carbon flux from glucose to the pentose phosphate pathway favoring shinorine production. Of the strategies we examined to reduce glycolytic flux, deletion of HXK2, encoding hexokinase, was most effective in increasing shinorine production. Furthermore, by additional expression of Ava3858 from Anabaena variabilis, encoding a rate-limiting enzyme 2-demethyl 4-deoxygadusol synthase, 68.4 mg/L of shinorine was produced in an optimized medium containing 14 g/L glucose and 6 g/L xylose, achieving a 2.2-fold increase compared with the previous strain.
Collapse
Affiliation(s)
- Chaeyeon Jin
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sojeong Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seokjun Moon
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hyunbin Jin
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Ji-Sook Hahn
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| |
Collapse
|
7
|
Whittock AL, Auckloo N, Cowden AM, Turner MAP, Woolley JM, Wills M, Corre C, Stavros VG. Exploring the Blueprint of Photoprotection in Mycosporine-like Amino Acids. J Phys Chem Lett 2021; 12:3641-3646. [PMID: 33826340 DOI: 10.1021/acs.jpclett.1c00728] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Microorganisms require protection against the potentially damaging effects of ultraviolet radiation exposure. Photoprotection is, in part, provided by mycosporine-like amino acids (MAAs). Previous reports have proposed that nonradiative decay mediates the impressive photoprotection abilities of MAAs. In this letter, we present the first ultrafast dynamics study of two MAAs, shinorine and porphyra-334. We demonstrate that, in aqueous solution, these MAAs relax along their S1 coordinates toward the S1/S0 conical intersection within a few hundred femtoseconds after photoexcitation and then traverse the conical intersection and vibrationally cool in approximately 1 ps through heat transfer to the solvent. This new insight allows a quintessential component of microbial life to be unraveled and informs the development of molecular photon-to-heat converters for a myriad of applications.
Collapse
Affiliation(s)
- Abigail L Whittock
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
- Analytical Science Centre for Doctoral Training, Senate House, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Nazia Auckloo
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
- Warwick Integrative Synthetic Biology Centre and School of Life Sciences, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Adam M Cowden
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
- Molecular Analytical Science Centre for Doctoral Training, Senate House, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Matthew A P Turner
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Jack M Woolley
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Martin Wills
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Christophe Corre
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
- Warwick Integrative Synthetic Biology Centre and School of Life Sciences, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Vasilios G Stavros
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom
| |
Collapse
|
8
|
Sensitized photo-oxidation of gadusol species mediated by singlet oxygen. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 213:112078. [PMID: 33221626 DOI: 10.1016/j.jphotobiol.2020.112078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/20/2020] [Accepted: 10/31/2020] [Indexed: 11/21/2022]
Abstract
Gadusols are efficient nature UV sunscreens with antioxidant capacity. The kinetics of the quenching reactions of singlet oxygen O2(1∆g) by gadusol species was evaluated in aqueous solution as well as in the presence of direct charged micelles. Time-resolved phosphorescence detection of O2(1∆g) indicated that gadusolate, the main species under biological pH, is a more efficient quencher than the enol form with a rate constant of ca. 1.3 × 108 L mol-1 s-1. The deactivation proceeds via a collisional mechanism with clear dominance of chemical pathways, according to the rates of gadusol and oxygen consumptions, and typical photooxidation quantum yields of ca. 7%. The relative contributions of the chemical and physical quenching steps were not affected by the presence of anionic or cationic micelles emulating simple pseudo-biological environments. The products of the photo-oxidative quenching support a type II mechanism initiated by the addition of O2(1∆g) to the C-C double bond of gadusolate. These results point to the relevance of considering the role of sacrifice antioxidant along with the UV-screening function for gadusol, particularly in the context of potential biotechnological applications of this natural molecule.
Collapse
|
9
|
Abiola TT, Whittock AL, Stavros VG. Unravelling the Photoprotective Mechanisms of Nature-Inspired Ultraviolet Filters Using Ultrafast Spectroscopy. Molecules 2020; 25:E3945. [PMID: 32872380 PMCID: PMC7504748 DOI: 10.3390/molecules25173945] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/26/2020] [Accepted: 08/27/2020] [Indexed: 02/07/2023] Open
Abstract
There are several drawbacks with the current commercially available ultraviolet (UV) filters used in sunscreen formulations, namely deleterious human and ecotoxic effects. As a result of the drawbacks, a current research interest is in identifying and designing new UV filters. One approach that has been explored in recent years is to use nature as inspiration, which is the focus of this review. Both plants and microorganisms have adapted to synthesize their own photoprotective molecules to guard their DNA from potentially harmful UV radiation. The relaxation mechanism of a molecule after it has been photoexcited can be unravelled by several techniques, the ones of most interest for this review being ultrafast spectroscopy and computational methods. Within the literature, both techniques have been implemented on plant-, and microbial-inspired UV filters to better understand their photoprotective roles in nature. This review aims to explore these findings for both families of nature-inspired UV filters in the hope of guiding the future design of sunscreens.
Collapse
Affiliation(s)
- Temitope T. Abiola
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK; (T.T.A.); (A.L.W.)
| | - Abigail L. Whittock
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK; (T.T.A.); (A.L.W.)
- AS CDT, Senate House, University of Warwick, Coventry CV4 7AL, UK
| | - Vasilios G. Stavros
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK; (T.T.A.); (A.L.W.)
| |
Collapse
|
10
|
Holt EL, Stavros VG. Applications of ultrafast spectroscopy to sunscreen development, from first principles to complex mixtures. INT REV PHYS CHEM 2019. [DOI: 10.1080/0144235x.2019.1663062] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Emily L. Holt
- Molecular Analytical Science Centre for Doctoral Training, Senate House, University of Warwick, Coventry, UK
- Department of Chemistry, University of Warwick, Coventry, UK
| | | |
Collapse
|
11
|
Losantos R, Lamas I, Montero R, Longarte A, Sampedro D. Photophysical characterization of new and efficient synthetic sunscreens. Phys Chem Chem Phys 2019; 21:11376-11384. [PMID: 31111130 DOI: 10.1039/c9cp01267b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The photoprotective capabilities of a family of compounds have been investigated. Their relaxation mechanisms have been explored by fluorescence and transient absorption measurements, and the minimum energy relaxation pathways were modeled by CASSCF/CASPT2 methods. This study demonstrates their excellent properties as sunscreens, and provides novel mechanistic insights for the rational design of new species.
Collapse
Affiliation(s)
- Raúl Losantos
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios, 53, 26006 Logroño, La Rioja, Spain.
| | - Iker Lamas
- Departamento de Química Física, Universidad del País Vasco (UPV/EHU), Apart. 644, 48080 Bilbao, Spain.
| | - Raúl Montero
- SGIker Laser Facility, UPV/EHU, Sarriena, s/n, 48940 Leioa, Spain
| | - Asier Longarte
- Departamento de Química Física, Universidad del País Vasco (UPV/EHU), Apart. 644, 48080 Bilbao, Spain.
| | - Diego Sampedro
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios, 53, 26006 Logroño, La Rioja, Spain.
| |
Collapse
|
12
|
Zhang J, Cai T, Li H, Zhao H. Synthesis g-C3N4 of high specific surface area by precursor pretreatment strategy with SBA-15 as a template and their photocatalytic activity toward degradation of rhodamine B. PHOSPHORUS SULFUR 2018. [DOI: 10.1080/10426507.2018.1539719] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Jie Zhang
- Department of Petrochemical Engineering, College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun, P.R. China
| | - Tianfeng Cai
- Department of Petrochemical Engineering, College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun, P.R. China
| | - Huipeng Li
- Department of Petrochemical Engineering, College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun, P.R. China
| | - Hua Zhao
- Department of Petrochemical Engineering, College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun, P.R. China
| |
Collapse
|
13
|
Woolley JM, Staniforth M, Horbury MD, Richings GW, Wills M, Stavros VG. Unravelling the Photoprotection Properties of Mycosporine Amino Acid Motifs. J Phys Chem Lett 2018; 9:3043-3048. [PMID: 29751729 DOI: 10.1021/acs.jpclett.8b00921] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Photoprotection from harmful ultraviolet (UV) radiation exposure is a key problem in modern society. Mycosporine-like amino acids found in fungi, cyanobacteria, macroalgae, phytoplankton, and animals are already presenting a promising form of natural photoprotection in sunscreen formulations. Using time-resolved transient electronic absorption spectroscopy and guided by complementary ab initio calculations, we help to unravel how the core structures of these molecules perform under UV irradiation. Through such detailed insight into the relaxation mechanisms of these ubiquitous molecules, we hope to inspire new thinking in developing next-generation photoprotective molecules.
Collapse
Affiliation(s)
- Jack M Woolley
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , U.K
| | - Michael Staniforth
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , U.K
| | - Michael D Horbury
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , U.K
| | - Gareth W Richings
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , U.K
| | - Martin Wills
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , U.K
| | - Vasilios G Stavros
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , U.K
| |
Collapse
|
14
|
Orallo DE, Fangio MF, Poblet M, Carignan MO, Bernal L, Carreto JI, Bertolotti SG, Churio MS. Photochemistry and Photophysics of Shinorine Dimethyl Ester. Photochem Photobiol 2018; 94:829-833. [PMID: 29315606 DOI: 10.1111/php.12884] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 12/05/2017] [Indexed: 01/25/2023]
Abstract
The photostability and photophysical properties of the dimethyl ester of the mycosporine-like amino acid shinorine have been experimentally evaluated in aqueous solution and in the presence of direct micelles prepared with a cationic or an anionic detergent, respectively. In comparison with shinorine, the ester molecule increases the photostability, the fluorescence quantum yield and the fluorescence lifetime in water as well as in the micellar solutions. The effects are more pronounced in sodium dodecyl sulfate solutions and suggest that the electrostatic attractions with the micellar interface contribute to limit the movement of the molecules and influence the relative rate of their deactivation channels. However, the predominance of the nonradiative decay is maintained together with the UV photoprotective ability of this atypical mycosporine species.
Collapse
Affiliation(s)
- Dalila E Orallo
- Departamento de Química, Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Físicas de Mar del Plata (CONICET-UNMDP), Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
| | - María Florencia Fangio
- Departamento de Química, Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Físicas de Mar del Plata (CONICET-UNMDP), Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
| | - Martin Poblet
- Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
| | - Mario O Carignan
- Instituto Nacional de Investigación y Desarrollo Pesquero, Mar del Plata, Argentina
| | - Luis Bernal
- Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
| | - José I Carreto
- Instituto Nacional de Investigación y Desarrollo Pesquero, Mar del Plata, Argentina
| | - Sonia G Bertolotti
- Departamento de Química, Universidad Nacional de Río Cuarto, CONICET, Río Cuarto, Argentina
| | - María Sandra Churio
- Departamento de Química, Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Físicas de Mar del Plata (CONICET-UNMDP), Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
| |
Collapse
|
15
|
Orallo DE, Bertolotti SG, Churio MS. Photophysicochemical characterization of mycosporine-like amino acids in micellar solutions. Photochem Photobiol Sci 2017; 16:1117-1125. [PMID: 28548169 DOI: 10.1039/c7pp00051k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The properties and photochemical and photophysical behavior of the mycosporine-like amino acids (MAAs) shinorine and porphyra-334 were experimentally evaluated in solutions of direct ionic micelles as simple biomimicking environments. The preferential partition of the natural molecules in the aqueous phase of sodium dodecyl sulfate (SDS) or cetyltrimethylammonium chloride (CTAC) micellar systems is confirmed. Although the proton dissociation of the carboxylic groups in the MAAs is slightly inhibited in CTAC solutions, the molecules are predicted to be in the form of zwitterions in all the explored media around physiological pH. The increase in the fluorescence quantum yield, emission lifetime and stationary anisotropy in the presence of CTAC micelles suggest electrostatic attractions of the MAAs with the surface of the cationic micelles. Consistently, the triplet-triplet absorption spectra in CTAC solutions reveal the typical environmental features of the micellar interface, while in the presence of SDS they are similar to those determined in neat water. Finally, the photostability of the MAAs increases in the micellar systems, more noticeably in the case of CTAC. It is concluded that the ability of the two MAAs to act as UV screens is susceptible to the influence of electrostatic interactions with organized microheterogeneous environments.
Collapse
Affiliation(s)
- D E Orallo
- IFIMAR, Instituto de Investigaciones Físicas de Mar del Plata (CONICET-UNMDP), Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, (B7602AYL) Mar del Plata, Argentina.
| | - S G Bertolotti
- Departamento de Química, Universidad Nacional de Río Cuarto, CONICET, (X5804BYA) Río Cuarto, Argentina
| | - M S Churio
- IFIMAR, Instituto de Investigaciones Físicas de Mar del Plata (CONICET-UNMDP), Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, (B7602AYL) Mar del Plata, Argentina.
| |
Collapse
|
16
|
Losantos R, Funes-Ardoiz I, Aguilera J, Herrera-Ceballos E, García-Iriepa C, Campos PJ, Sampedro D. Rational Design and Synthesis of Efficient Sunscreens To Boost the Solar Protection Factor. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611627] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Raúl Losantos
- Department of Chemistry; Centro de Investigación en Síntesis Química (CISQ); Universidad de La Rioja; Madre de Dios 53 26006 Logroño Spain
| | - Ignacio Funes-Ardoiz
- Department of Chemistry; Centro de Investigación en Síntesis Química (CISQ); Universidad de La Rioja; Madre de Dios 53 26006 Logroño Spain
| | - José Aguilera
- Department of Dermatology; Centro de Investigaciones Médico Sanitarias; Facultad de Medicina; Universidad de Málaga; Boulevard Louis Pasteur s/n 29071 Málaga Spain
| | - Enrique Herrera-Ceballos
- Department of Dermatology; Centro de Investigaciones Médico Sanitarias; Facultad de Medicina; Universidad de Málaga; Boulevard Louis Pasteur s/n 29071 Málaga Spain
| | - Cristina García-Iriepa
- Department of Chemistry; Centro de Investigación en Síntesis Química (CISQ); Universidad de La Rioja; Madre de Dios 53 26006 Logroño Spain
- Department of Physical Chemistry; Universidad de Alcalá; 28871 Alcalá de Henares Madrid Spain
| | - Pedro J. Campos
- Department of Chemistry; Centro de Investigación en Síntesis Química (CISQ); Universidad de La Rioja; Madre de Dios 53 26006 Logroño Spain
| | - Diego Sampedro
- Department of Chemistry; Centro de Investigación en Síntesis Química (CISQ); Universidad de La Rioja; Madre de Dios 53 26006 Logroño Spain
| |
Collapse
|
17
|
Losantos R, Funes-Ardoiz I, Aguilera J, Herrera-Ceballos E, García-Iriepa C, Campos PJ, Sampedro D. Rational Design and Synthesis of Efficient Sunscreens To Boost the Solar Protection Factor. Angew Chem Int Ed Engl 2017; 56:2632-2635. [PMID: 28128519 DOI: 10.1002/anie.201611627] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/09/2017] [Indexed: 11/08/2022]
Abstract
Skin cancer incidence has been increasing in the last decades, but most of the commercial formulations used as sunscreens are designed to protect only against solar erythema. Many of the active components present in sunscreens show critical weaknesses, such as low stability and toxicity. Thus, the development of more efficient components is an urgent health necessity and an attractive industrial target. We have rationally designed core moieties with increased photoprotective capacities and a new energy dissipation mechanism. Using these scaffolds, we have synthesized a series of compounds with tunable properties suitable for their use in sunscreens, and enhanced properties in terms of stability, light energy dissipation, and toxicity. Moreover, some representative compounds were included in final sunscreen formulations and a relevant solar protection factor boost was measured.
Collapse
Affiliation(s)
- Raúl Losantos
- Department of Chemistry, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006, Logroño, Spain
| | - Ignacio Funes-Ardoiz
- Department of Chemistry, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006, Logroño, Spain
| | - José Aguilera
- Department of Dermatology, Centro de Investigaciones Médico Sanitarias, Facultad de Medicina, Universidad de Málaga, Boulevard Louis Pasteur s/n, 29071, Málaga, Spain
| | - Enrique Herrera-Ceballos
- Department of Dermatology, Centro de Investigaciones Médico Sanitarias, Facultad de Medicina, Universidad de Málaga, Boulevard Louis Pasteur s/n, 29071, Málaga, Spain
| | - Cristina García-Iriepa
- Department of Chemistry, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006, Logroño, Spain.,Department of Physical Chemistry, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
| | - Pedro J Campos
- Department of Chemistry, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006, Logroño, Spain
| | - Diego Sampedro
- Department of Chemistry, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006, Logroño, Spain
| |
Collapse
|