1
|
Khan MAR, Wang BW, Lin HC, Yang YL, Liaw CC. Structure-Functional Activity of Pyrone Derivatives for Inhibition of Barnacle Settlement and Biofilm Formation. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2024:10.1007/s10126-024-10349-1. [PMID: 39066983 DOI: 10.1007/s10126-024-10349-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 07/18/2024] [Indexed: 07/30/2024]
Abstract
Naturally occurring 6-pentyl-2H-pyran-2-one and its synthetic analogues greatly inhibit the settlement of Amphibalanus amphitrite cyprids and the growth and biofilm formation of marine bacteria. To optimize the antifouling activities of pyrone derivatives, this study designed pyrone analogues by modifying functional groups, such as the benzyl group, cyclopentane, and halides, substituted on both sides of a pyrone. The antifouling effects of the synthesized pyrone derivatives were subsequently evaluated against five marine biofilm-forming bacteria, Loktanella hongkongensis, Staphylococcus cohnii, S. saprophyticus, Photobacterium angustum, and Alteromonas macleodii, along with barnacle cyprids of Amphibalanus amphitrite. Substituting nonpolar parts-such as the aliphatic, cyclopentyl, or phenyl moieties on C-5 or the furan moieties on C-3-not only increased antibacterial activity and inhibited biofilm formation but also inhibited barnacle cyprid settlement when compared to 6-pentyl-2H-pyran-2-one.
Collapse
Affiliation(s)
- Mo Aqib Raza Khan
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Bo-Wei Wang
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 115, Taiwan
- Biotechnology Center in Southern Taiwan, Academia Sinica, Tainan, 711, Taiwan
| | - Hsiu-Chin Lin
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Yu-Liang Yang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 115, Taiwan
- Biotechnology Center in Southern Taiwan, Academia Sinica, Tainan, 711, Taiwan
| | - Chih-Chuang Liaw
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan.
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan.
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
- Graduate Institute of Pharmacognosy, Taipei Medical University, Taipei, 110, Taiwan.
| |
Collapse
|
2
|
Zhang B, Jia C, Li M, Wang K, Chen J, Zhao J. Multiomics integration for the function of bacterial outer membrane vesicles in the larval settlement of marine sponges. Front Microbiol 2024; 15:1268813. [PMID: 38468855 PMCID: PMC10925772 DOI: 10.3389/fmicb.2024.1268813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 01/26/2024] [Indexed: 03/13/2024] Open
Abstract
Bacterial outer membrane vesicles (OMVs) contain a variety of chemical compounds and play significant roles in maintaining symbiotic relationships in a changing ocean, but little is known about their function, particularly in sponge larval development. During the growth of sponge Tedania sp., OMVs from Bacteroidetes species significantly promoted larval settlement, and Tenacibaculum mesophilum SP-7-OMVs were selected as a representative strain for further investigation. According to OMVs metabolomics, larval settlement might be connected to organic acids and derivatives. The multiomics analysis of the T. mesophilum genome, SP-7-OMVs metabolome, and larval transcriptome revealed 47 shared KEGG pathways. Among the number of candidate metabolites, arginine was chosen for its greater ability to increase the settlement rate and its role as the principal substrate for nitric oxide (NO) synthesis of sponge larvae. In summary, these results demonstrated that sponge-associated bacteria might utilize OMVs and their cargo to support host development and make up for host metabolic pathway deficiencies. This study enhances our fundamental knowledge of OMVs in interactions between metazoan hosts and microorganisms that are crucial in the coevolution of marine ecosystems and the complex marine environment.
Collapse
Affiliation(s)
- Beibei Zhang
- College of Ocean and Earth Sciences, Xiamen University, Xaimen, Fujian, China
| | - Chenzheng Jia
- College of Ocean and Earth Sciences, Xiamen University, Xaimen, Fujian, China
| | - Mingyu Li
- College of Ocean and Earth Sciences, Xiamen University, Xaimen, Fujian, China
| | - Kai Wang
- College of Ocean and Earth Sciences, Xiamen University, Xaimen, Fujian, China
| | - Jun Chen
- College of Ocean and Earth Sciences, Xiamen University, Xaimen, Fujian, China
| | - Jing Zhao
- College of Ocean and Earth Sciences, Xiamen University, Xaimen, Fujian, China
- Xiamen City Key Laboratory of Urban Sea Ecological Conservation and Restoration (USER), Xiamen University, Xiamen, Fujian, China
| |
Collapse
|
3
|
Cahill PL, Moodie LWK, Hertzer C, Pinori E, Pavia H, Hellio C, Brimble MA, Svenson J. Creating New Antifoulants Using the Tools and Tactics of Medicinal Chemistry. Acc Chem Res 2024; 57:399-412. [PMID: 38277792 DOI: 10.1021/acs.accounts.3c00733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
The unwanted accumulation of marine micro- and macroorganisms such as algae and barnacles on submerged man-made structures and vessel hulls is a major challenge for any marine operation. Known as biofouling, this problem leads to reduced hydrodynamic efficiency, significantly increased fuel usage, microbially induced corrosion, and, if not managed appropriately, eventual loss of both performance and structural integrity. Ship hull biofouling in the international maritime transport network conservatively accounts for 0.6% of global carbon emissions, highlighting the global scale and the importance of this problem. Improved antifouling strategies to limit surface colonization are paramount for essential activities such as shipping, aquaculture, desalination, and the marine renewable energy sector, representing both a multibillion dollar cost and a substantial practical challenge. From an ecological perspective, biofouling is a primary contributor to the global spread of invasive marine species, which has extensive implications for the marine environment.Historically, heavy metal-based toxic biocides have been used to control biofouling. However, their unwanted collateral ecological damage on nontarget species and bioaccumulation has led to recent global bans. With expanding human activities within aquaculture and offshore energy, it is both urgent and apparent that environmentally friendly surface protection remains key for maintaining the function of both moving and stationary marine structures. Biofouling communities are typically a highly complex network of both micro- and macroorganisms, representing a broad section of life from bacteria to macrophytes and animals. Given this diversity, it is unrealistic to expect that a single antifouling "silver bullet" will prevent colonization with the exception of generally toxic biocides. For that reason, modern and future antifouling solutions are anticipated to rely on novel coating technologies and "combination therapies" where mixtures of narrow-spectrum bioactive components are used to provide coverage across fouling species. In contrast to the existing cohort of outdated, toxic antifouling strategies, such as copper- and tributyltin-releasing paints, modern drug discovery techniques are increasingly being employed for the rational design of effective yet safe alternatives. The challenge for a medicinal chemistry approach is to effectively account for the large taxonomic diversity among fouling organisms combined with a lack of well-defined conserved molecular targets within most taxa.The current Account summarizes our work employing the tools of modern medicinal chemistry to discover, modify, and develop optimized and scalable antifouling solutions based on naturally occurring antifouling and repelling compounds from both marine and terrestrial sources. Inspiration for rational design comes from targeted studies on allelopathic natural products, natural repelling peptides, and secondary metabolites from sessile marine organisms with clean exteriors, which has yielded several efficient and promising antifouling leads.
Collapse
Affiliation(s)
- Patrick L Cahill
- Cawthron Institute, 98 Halifax Street East, Nelson 7010, New Zealand
| | - Lindon W K Moodie
- Drug Design and Discovery, Department of Medicinal Chemistry, Biomedical Centre, Uppsala University, 75123 Uppsala, Sweden
| | - Cora Hertzer
- Cawthron Institute, 98 Halifax Street East, Nelson 7010, New Zealand
| | - Emiliano Pinori
- RISE Research Institutes of Sweden, Division for Material and Production, 504 62 Borås, Sweden
| | - Henrik Pavia
- Department of Marine Sciences - Tjärnö, University of Gothenburg, SE-452 96 Strömstad, Sweden
| | - Claire Hellio
- Univ. Brest, Laboratoire des Sciences de l'Environnement MARin (LEMAR), CNRS, IRD, IFREMER, Brest 29285, France
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Johan Svenson
- Cawthron Institute, 98 Halifax Street East, Nelson 7010, New Zealand
| |
Collapse
|
4
|
Davis RA, Cervin G, Beattie KD, Rali T, Fauchon M, Hellio C, Bodin Åkerlund L, Pavia H, Svenson J. Evaluation of natural resveratrol multimers as marine antifoulants. BIOFOULING 2023; 39:775-784. [PMID: 37822262 DOI: 10.1080/08927014.2023.2263374] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 09/18/2023] [Indexed: 10/13/2023]
Abstract
In the current study we investigate the antifouling potential of three polyphenolic resveratrol multimers (-)-hopeaphenol, vaticanol B and vatalbinoside A, isolated from two species of Anisoptera found in the Papua New Guinean rainforest. The compounds were evaluated against the growth and settlement of eight marine microfoulers and against the settlement and metamorphosis of Amphibalanus improvisus barnacle cyprids. The two isomeric compounds (-)-hopeaphenol and vaticanol B displayed a high inhibitory potential against the cyprid larvae metamorphosis at 2.8 and 1.1 μM. (-)-Hopeaphenol was also shown to be a strong inhibitor of both microalgal and bacterial adhesion at submicromolar concentrations with low toxicity. Resveratrol displayed a lower antifouling activity compared to the multimers and had higher off target toxicity against MCR-5 fibroblasts. This study illustrates the potential of natural products as a valuable source for the discovery of novel antifouling leads with low toxicity.
Collapse
Affiliation(s)
- Rohan A Davis
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD, Australia
| | - Gunnar Cervin
- Department of Marine Sciences - Tjärnö, University of Gothenburg, Strömstad, Sweden
| | - Karren D Beattie
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD, Australia
| | - Topul Rali
- School of Natural and Physical Sciences, The University of Papua New Guinea, Port Moresby, Papua New Guinea
| | - Marilyne Fauchon
- Laboratoire des Sciences de l'Environnement MARin (LEMAR), CNRS, IRD, IFREMER, University of Brest, Brest, France
| | - Claire Hellio
- Laboratoire des Sciences de l'Environnement MARin (LEMAR), CNRS, IRD, IFREMER, University of Brest, Brest, France
| | - Lovisa Bodin Åkerlund
- Department of Biological Function, RISE Research Institutes of Sweden, Borås, Sweden
| | - Henrik Pavia
- Department of Marine Sciences - Tjärnö, University of Gothenburg, Strömstad, Sweden
| | | |
Collapse
|
5
|
Craig A, Ermolovich Y, Cameron A, Rodler A, Wang H, Hawkes JA, Hubert M, Björkling F, Molchanova N, Brimble MA, Moodie LWK, Svenson J. Antimicrobial Peptides Incorporating Halogenated Marine-Derived Amino Acid Substituents. ACS Med Chem Lett 2023; 14:802-809. [PMID: 37312845 PMCID: PMC10258904 DOI: 10.1021/acsmedchemlett.3c00093] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 05/01/2023] [Indexed: 06/15/2023] Open
Abstract
Small synthetic mimics of cationic antimicrobial peptides represent a promising class of compounds with leads in clinical development for the treatment of persistent microbial infections. The activity and selectivity of these compounds rely on a balance between hydrophobic and cationic components, and here, we explore the activity of 19 linear cationic tripeptides against five different pathogenic bacteria and fungi, including clinical isolates. The compounds incorporated modified hydrophobic amino acids inspired by motifs often found in bioactive marine secondary metabolites in combination with different cationic residues to probe the possibility of generating active compounds with improved safety profiles. Several of the compounds displayed high activity (low μM concentrations), comparable with the positive controls AMC-109, amoxicillin, and amphotericin B. A higher activity was observed against the fungal strains, and a low in vitro off-target toxicity was observed against erythrocytes and HeLa cells, thereby illustrating effective means for tuning the activity and selectivity of short antimicrobial peptides.
Collapse
Affiliation(s)
- Alexander
J. Craig
- Drug
Design and Discovery, Department of Medicinal Chemistry, Biomedical
Centre, Uppsala University, 75123 Uppsala, Sweden
- Analytical
Chemistry, Department of Chemistry, Biomedical Centre, Uppsala University, 75123 Uppsala, Sweden
| | - Yuri Ermolovich
- Department
of Drug Design and Pharmacology, University
of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Alan Cameron
- School
of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Agnes Rodler
- Department
of Pharmacy, Biomedical Centre, Uppsala
University, 75123 Uppsala, Sweden
| | - Helen Wang
- Department
of Medical Biochemistry and Microbiology, Biomedical Centre, Uppsala University, 75123 Uppsala, Sweden
| | - Jeffrey A. Hawkes
- Analytical
Chemistry, Department of Chemistry, Biomedical Centre, Uppsala University, 75123 Uppsala, Sweden
| | - Madlen Hubert
- Department
of Pharmacy, Biomedical Centre, Uppsala
University, 75123 Uppsala, Sweden
| | - Fredrik Björkling
- Department
of Drug Design and Pharmacology, University
of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Natalia Molchanova
- The
Molecular Foundry, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
| | - Margaret A. Brimble
- School
of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Lindon W. K. Moodie
- Drug
Design and Discovery, Department of Medicinal Chemistry, Biomedical
Centre, Uppsala University, 75123 Uppsala, Sweden
- Uppsala
Antibiotic Centre, Biomedical Centre, Uppsala
University, 75123 Uppsala, Sweden
| | - Johan Svenson
- Cawthron
Institute, 98 Halifax Street East, Nelson 7010, New Zealand
| |
Collapse
|
6
|
Li X, Xun T, Xu H, Pang X, Yang B, Wang J, Zhou X, Lin X, Tan S, Liu Y, Liao S. Design, Synthesis, and Anticancer Activity of Novel 3,6-Diunsaturated 2,5-Diketopiperazines. Mar Drugs 2023; 21:325. [PMID: 37367651 DOI: 10.3390/md21060325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/28/2023] Open
Abstract
Based on the marine natural products piperafizine B, XR334, and our previously reported compound 4m, fourteen novel 3,6-diunsaturated 2,5-diketopiperazine (2,5-DKP) derivatives (1, 2, 4-6, 8-16), together with two known ones (3 and 7), were designed and synthesized as anticancer agents against the A549 and Hela cell lines. The MTT assay results showed that the derivatives 6, 8-12, and 14 had moderate to good anticancer capacities, with IC50 values ranging from 0.7 to 8.9 μM. Among them, compound 11, with naphthalen-1-ylmethylene and 2-methoxybenzylidene functions at the 3 and 6 positions of 2,5-DKP ring, respectively, displayed good inhibitory activities toward both A549 (IC50 = 1.2 μM) and Hela (IC50 = 0.7 μM) cancer cells. It could also induce apoptosis and obviously block cell cycle progression in the G2/M phases in both cells at 1.0 μM. The electron-withdrawing functions might not be favorable for the derivatives with high anticancer activities. Additionally, compared to piperafizine B and XR334, these semi-N-alkylated derivatives have high liposolubilities (>1.0 mg mL-1). Compound 11 can be further developed, aiming at the discovery of a novel anticancer candidate.
Collapse
Affiliation(s)
- Xiaolin Li
- Research Center for Marine Microbes, CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tianrong Xun
- Department of Pharmacy, Southern Medical University, Shenzhen 518100, China
| | - Huayan Xu
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xiaoyan Pang
- Research Center for Marine Microbes, CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Bin Yang
- Research Center for Marine Microbes, CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Junfeng Wang
- Research Center for Marine Microbes, CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xuefeng Zhou
- Research Center for Marine Microbes, CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiuping Lin
- Research Center for Marine Microbes, CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Suiyi Tan
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yonghong Liu
- Research Center for Marine Microbes, CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Shengrong Liao
- Research Center for Marine Microbes, CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
7
|
Alarif WM, Shaban YA, Orif MI, Ghandourah MA, Turki AJ, Alorfi HS, Tadros HRZ. Green Synthesis of TiO 2 Nanoparticles Using Natural Marine Extracts for Antifouling Activity. Mar Drugs 2023; 21:md21020062. [PMID: 36827102 PMCID: PMC9962051 DOI: 10.3390/md21020062] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 01/16/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023] Open
Abstract
Titanium dioxide (TiO2) nanoparticles were synthesized via a novel eco-friendly green chemistry approach using marine natural extracts of two red algae (Bostrychia tenella and Laurencia obtusa), a green alga (Halimeda tuna), and a brown alga (Sargassum filipendula) along with a marine sponge sample identified as Carteriospongia foliascens. X-ray diffraction (XRD), scanning electron microscope (SEM), UV-Vis, X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and Fourier-transform infrared spectroscopy (FTIR) were employed to characterize the crystal structure, surface morphology, and optical properties of the synthesized nanoparticles. Each of the as-synthesized marine extract based TiO2 nanoparticles was individually incorporated as an antifouling agent to form a newly fabricated marine paint formulation. The newly prepared formulations were applied on unprimed steel panels. A comparative study with a commercial antifouling paint (Sipes Transocean Coatings Optima) was carried out. After 108 days of the coated steel panels' immersion in the Eastern Harbour seawater of Alexandria-Egypt, the prepared paints using B. tenella and C. foliascens extracts demonstrated an excellent antifouling performance toward fouling organisms by inhibiting their settlement and controlling their adhesion onto the immersed panels. In contrast, heavy fouling with barnacles was observed on the surface of the coated panel with the commercial paint. The physicochemical parameters of the seawater surrounding the immersed coated panels were estimated to investigate the influence of the fabricated paint formulations. Interestingly, no effects of the immersed coated panels on the physicochemical characteristics of the surrounding seawater were observed. Based on the obtained results and a comparison with commercially available antifouling products, the marine extract based TiO2 nanoparticle preparations of B. tenella and C. foliascens are promising candidates for eco-friendly antifouling agents. Based on the obtained results and a comparison with commercially available antifouling products, the marine extract based TiO2 nanoparticle preparations of B. tenella and C. foliascens are promising candidates for eco-friendly antifouling agents, which could be attributed to the small crystallite sizes of 22.86 and 8.3 nm, respectively, in addition to the incorporation of carbon in the crystal structure of the nanoparticles.
Collapse
Affiliation(s)
- Walied M. Alarif
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Yasser A. Shaban
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Correspondence: ; Tel.: +966-595-670522
| | - Mohammed I. Orif
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohamed A. Ghandourah
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Adnan J. Turki
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Hajer S. Alorfi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Hermine R. Z. Tadros
- National Institute of Oceanography and Fisheries, Kayet Bay, Alexandria 21556, Egypt
| |
Collapse
|
8
|
Grant TM, Rennison D, Arabshahi HJ, Brimble MA, Cahill P, Svenson J. Effect of regio- and stereoisomerism on antifouling 2,5-diketopiperazines. Org Biomol Chem 2022; 20:9431-9446. [PMID: 36408605 DOI: 10.1039/d2ob01864k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Marine biofouling is a problem that plagues all maritime industries at vast economic and environmental cost. Previous and current methods to prevent biofouling have employed the use of heavy metals and other toxic or highly persistent chemicals, and these methods are now coming under immense regulatory pressure. Recent studies have illustrated the potential of nature-inspired tetrasubstituted 2,5-diketopiperazines (2,5-DKPs) as eco-friendly marine biocides for biofouling control. These highly active symmetrically substituted 2,5-DKPs can be generated by combining structural motifs from cationic innate defence peptides and natural marine antifoulants. A balance between a threshold hydrophobic contribution and sufficient cationic charge has been established as key for bioactivity, and our current study further increases understanding of the antifouling mechanism by investigating the effect of both regio- and stereochemistry. Novel synthetic routes for the generation of unsymmetrical 2,5-DKPs were developed and a library of nine compounds was prepared. The compounds were screened against a series of four model macrofouling organisms (Ciona savignyi, Mytilus galloprovincialis, Spirobranchus cariniferus, and Undaria pinnatifida). Several of the evaluated compounds displayed inhibitory activity at sub-micromolar concentrations. The structural contributions to antifouling bioactivity were studied using NMR spectroscopy and molecular modelling, revealing a strong dependence on a stable amphiphilic solution structure regardless of substitution pattern.
Collapse
Affiliation(s)
- Thomas M Grant
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand.
| | - David Rennison
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand.
| | - Homayon J Arabshahi
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand.
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand.
| | - Patrick Cahill
- Cawthron Institute, 98 Halifax Street, Nelson, New Zealand.
| | - Johan Svenson
- Cawthron Institute, 98 Halifax Street, Nelson, New Zealand.
| |
Collapse
|
9
|
Li J, Huang JH, Wang JY, Xu ZG, Chen ZZ, Lei J. An intramolecular hydrogen bond-promoted "green" Ugi cascade reaction for the synthesis of 2,5-diketopiperazines with anticancer activity. RSC Adv 2022; 12:33175-33179. [PMID: 36425196 PMCID: PMC9678023 DOI: 10.1039/d2ra04958a] [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] [Received: 08/08/2022] [Accepted: 09/23/2022] [Indexed: 11/23/2022] Open
Abstract
We report a "green chemistry"-based Ugi cascade reaction to furnish a series of 2,5-diketopiperazines (through nucleophilic attack of amides upon ketones in Ugi adducts) at moderate-to-good yields. Investigation with the MTT assay revealed compound (±) 5c to exhibit potent anticancer activities against acute myeloid leukaemia (MV411; IC50 = 1.7 μM) and acute T lymphocyte leukaemia (Jurkat; IC50 = 5.7 μM) cell lines.
Collapse
Affiliation(s)
- Jie Li
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and SciencesChongqing 402160China
| | - Jiu Hong Huang
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and SciencesChongqing 402160China
| | - Jing Ya Wang
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and SciencesChongqing 402160China
| | - Zhi Gang Xu
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and SciencesChongqing 402160China
| | - Zhong Zhu Chen
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and SciencesChongqing 402160China
| | - Jie Lei
- College of Pharmacy, National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, IATTI, Chongqing University of Arts and SciencesChongqing 402160China
| |
Collapse
|
10
|
Blasiak R, Jouffray JB, Amon DJ, Moberg F, Claudet J, Søgaard Jørgensen P, Pranindita A, Wabnitz CCC, Österblom H. A forgotten element of the blue economy: marine biomimetics and inspiration from the deep sea. PNAS NEXUS 2022; 1:pgac196. [PMID: 36714844 PMCID: PMC9802412 DOI: 10.1093/pnasnexus/pgac196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The morphology, physiology, and behavior of marine organisms have been a valuable source of inspiration for solving conceptual and design problems. Here, we introduce this rich and rapidly expanding field of marine biomimetics, and identify it as a poorly articulated and often overlooked element of the ocean economy associated with substantial monetary benefits. We showcase innovations across seven broad categories of marine biomimetic design (adhesion, antifouling, armor, buoyancy, movement, sensory, stealth), and use this framing as context for a closer consideration of the increasingly frequent focus on deep-sea life as an inspiration for biomimetic design. We contend that marine biomimetics is not only a "forgotten" sector of the ocean economy, but has the potential to drive appreciation of nonmonetary values, conservation, and stewardship, making it well-aligned with notions of a sustainable blue economy. We note, however, that the highest ambitions for a blue economy are that it not only drives sustainability, but also greater equity and inclusivity, and conclude by articulating challenges and considerations for bringing marine biomimetics onto this trajectory.
Collapse
Affiliation(s)
- Robert Blasiak
- Stockholm Resilience Centre, Stockholm University, 106 91 Stockholm, Sweden
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | | | - Diva J Amon
- SpeSeas, D'Abadie, Trinidad and Tobago
- Marine Science Institute, University of California, Santa Barbara, CA 93106, USA
| | - Fredrik Moberg
- Stockholm Resilience Centre, Stockholm University, 106 91 Stockholm, Sweden
| | - Joachim Claudet
- National Center for Scientific Research, PSL Université Paris, CRIOBE, CNRS-EPHE-UPVD, Maison de l'Océan, 195 rue Saint-Jacques, 75005 Paris, France
| | - Peter Søgaard Jørgensen
- Stockholm Resilience Centre, Stockholm University, 106 91 Stockholm, Sweden
- The Global Economic Dynamics and the Biosphere Academy Program, Royal Swedish Academy of Science, 104 05 Stockholm, Sweden
| | - Agnes Pranindita
- Stockholm Resilience Centre, Stockholm University, 106 91 Stockholm, Sweden
| | - Colette C C Wabnitz
- Stanford Center for Ocean Solutions, Stanford University, 473 Via Ortega, Stanford, CA 94305, USA
- Institute for the Oceans and Fisheries, The University of British Columbia, 2202 Main Mall, Vancouver, BC V6T1Z4, Canada
| | - Henrik Österblom
- Stockholm Resilience Centre, Stockholm University, 106 91 Stockholm, Sweden
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
- South American Institute for Resilience and Sustainability Studies, CP 20200 Maldonado, Uruguay
| |
Collapse
|
11
|
Elumalai V, Trobec T, Grundner M, Labriere C, Frangež R, Sepčić K, Hansen JH, Svenson J. Development of potent cholinesterase inhibitors based on a marine pharmacophore. Org Biomol Chem 2022; 20:5589-5601. [PMID: 35796650 DOI: 10.1039/d2ob01064j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The management of neurological disorders such as dementia associated with Alzheimer's or Parkinson's disease includes the use of cholinesterase inhibitors. These compounds can slow down the progression of these diseases and can also be used in the treatment of glaucoma and myasthenia gravis. The majority of the cholinesterase inhibitors used in the clinic are derived from natural products and our current paper describes the use of a small marine pharmacophore to develop potent and selective cholinesterase inhibitors. Fourteen small inhibitors were designed based on recent discoveries about the inhibitory potential of a range of related marine secondary metabolites. The compounds were evaluated, in kinetic enzymatic assays, for their ability to inhibit three different cholinesterase enzymes and it was shown that compounds with a high inhibitory activity towards electric eel and human recombinant acetylcholinesterase (IC50 between 20-70 μM) could be prepared. It was also shown that this compound class was particularly active against horse serum butyrylcholinesterase, with IC50 values between 0.8-16 μM, which is an order of magnitude more potent than the clinically used positive control neostigmine. The compounds were further tested for off-target toxicity against both human umbilical vein endothelial cells and bovine and human erythrocytes and were shown to display a low mammalian cellular toxicity. Overall, the study illustrates how the brominated dipeptide marine pharmacophore can be used as a versatile natural scaffold for the design of potent, and selective cholinesterase inhibitors.
Collapse
Affiliation(s)
- Vijayaragavan Elumalai
- Department of Chemistry, Chemical Synthesis and Analysis Group, UiT The Arctic University of Norway, N-9037, Tromsø, Norway.
| | - Tomaž Trobec
- Institute of Preclinical Sciences, Veterinary Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Maja Grundner
- Department of Biology, Biotechnical Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Christophe Labriere
- Department of Chemistry, Chemical Synthesis and Analysis Group, UiT The Arctic University of Norway, N-9037, Tromsø, Norway.
| | - Robert Frangež
- Institute of Preclinical Sciences, Veterinary Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Kristina Sepčić
- Department of Biology, Biotechnical Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Jørn H Hansen
- Department of Chemistry, Chemical Synthesis and Analysis Group, UiT The Arctic University of Norway, N-9037, Tromsø, Norway.
| | - Johan Svenson
- Cawthron Institute, 98 Halifax Street East, Nelson 7010, New Zealand
| |
Collapse
|
12
|
Grant TM, Rennison D, Cervin G, Pavia H, Hellio C, Foulon V, Brimble MA, Cahill P, Svenson J. Towards eco-friendly marine antifouling biocides - Nature inspired tetrasubstituted 2,5-diketopiperazines. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 812:152487. [PMID: 34953845 DOI: 10.1016/j.scitotenv.2021.152487] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/13/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Marine biofouling plagues all maritime industries at vast economic and environmental cost. Previous and most current methods to control biofouling have employed highly persistent toxins and heavy metals, including tin, copper, and zinc. These toxic methods are resulting in unacceptable environmental harm and are coming under immense regulatory pressure. Eco-friendly alternatives are urgently required to effectively mitigate the negative consequence of biofouling without causing collateral harm. Amphiphilic micropeptides have recently been shown to exhibit excellent broad-spectrum antifouling activity, with a non-toxic mode of action and innate biodegradability. The present work focused on incorporating the pharmacophore derived from amphiphilic micropeptides into a 2,5-diketopiperazine (DKP) scaffold. This privileged structure is present in a vast number of natural products, including marine natural product antifoulants, and provides advantages of synthetic accessibility and adaptability. A novel route to symmetrical tetrasubstituted DKPs was developed and a library of amphiphilic 2,5-DKPs were subsequently synthesised. These biodegradable compounds were demonstrated to be potent marine antifoulants displaying broad-spectrum activity in the low micromolar range against a range of common marine fouling organisms. The outcome of planned coating and field trials will dictate the future development of the lead compounds.
Collapse
Affiliation(s)
- Thomas M Grant
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - David Rennison
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - Gunnar Cervin
- Department of Marine Sciences, Tjärnö Marine Laboratory, University of Gothenburg, SE-452 96 Strömstad, Sweden
| | - Henrik Pavia
- Department of Marine Sciences, Tjärnö Marine Laboratory, University of Gothenburg, SE-452 96 Strömstad, Sweden
| | - Claire Hellio
- Univ. Brest, Laboratoire des Sciences de l'Environnement MARin (LEMAR), CNRS, IRD, IFREMER, Brest 29285, France
| | - Valentin Foulon
- Univ. Brest, Laboratoire des Sciences de l'Environnement MARin (LEMAR), CNRS, IRD, IFREMER, Brest 29285, France
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - Patrick Cahill
- Cawthron Institute, 98 Halifax Street, Nelson, New Zealand
| | - Johan Svenson
- Cawthron Institute, 98 Halifax Street, Nelson, New Zealand.
| |
Collapse
|