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Kuzderová G, Sovová S, Rendošová M, Gyepes R, Sabolová D, Kožárová I, Balážová Ľ, Vilková M, Kello M, Liška A, Vargová Z. Influence of proline and hydroxyproline as antimicrobial and anticancer peptide components on the silver(I) ion activity: structural and biological evaluation with a new theoretical and experimental SAR approach. Dalton Trans 2024; 53:10834-10850. [PMID: 38661536 DOI: 10.1039/d4dt00389f] [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: 04/26/2024]
Abstract
Silver(I) complexes with proline and hydroxyproline were synthesized and structurally characterized and crystal structure analysis shows that the formulas of the compounds are {[Ag2(Pro)2(NO3)]NO3}n (AgPro) (Pro = L-proline) and {[Ag2(Hyp)2(NO3)]NO3}n (AgHyp) (Hyp = trans-4-hydroxy-L-proline). Both complexes crystallize in the monoclinic lattice with space group P21 with a carboxylate bidentate-bridging coordination mode of the organic ligands Pro and Hyp (with NH2+ and COO- groups in zwitterionic form). Both complexes have a distorted seesaw (C2v) geometry around one silver(I) ion with τ4 values of 58% (AgPro) and 51% (AgHyp). Moreover, the results of spectral and thermal analyses correlate with the structural ones. 1H and 13C NMR spectra confirm the complexes species' presence in the DMSO biological testing medium and their stability in the time range of the bioassays. In addition, molar conductivity measurements indicate complexes' behaviour like 1 : 1 electrolytes. Both complexes showed higher or the same antibacterial activity against Bacillus cereus, Pseudomonas aeruginosa and Staphylococcus aureus as AgNO3 (MIC = 0.063 mM) and higher than silver(I) sulfadiazine (AgSD) (MIC > 0.5 mM) against Pseudomonas aeruginosa. In addition, complex AgPro exerted a strong cytotoxic effect against the tested MDA-MB-231 and Jurkat cancer cell lines (IC50 values equal to 3.7 and 3.0 μM, respectively) compared with AgNO3 (IC50 = 6.1 (5.7) μM) and even significantly higher selectivity than cisplatin (cisPt) against MDA-MB-231 cancer cell lines (SI = 3.05 (AgPro); 1.16 (cisPt), SI - selectivity index). The binding constants and the number of binding sites (n) of AgPro and AgHyp complexes with bovine serum albumin (BSA) were determined at four different temperatures, and the zeta potential of BSA in the presence of silver(I) complexes was also measured. The in ovo method shows the safety of the topical and intravenous application of AgPro and AgHyp. Moreover, the complexes' bioavailability was verified by lipophilicity evaluation from the experimental and theoretical points of view.
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Affiliation(s)
- Gabriela Kuzderová
- Department of Inorganic Chemistry, Faculty of Science, P.J.Šafárik University, Moyzesova 11, 041 54 Košice, Slovak Republic.
| | - Simona Sovová
- Department of Biochemistry, Faculty of Science, P.J.Šafárik University, Moyzesova 11, 041 54 Košice, Slovak Republic
- Department of Food Hygiene, Technology and Safety, University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81 Košice, Slovak Republic
| | - Michaela Rendošová
- Department of Inorganic Chemistry, Faculty of Science, P.J.Šafárik University, Moyzesova 11, 041 54 Košice, Slovak Republic.
| | - Róbert Gyepes
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 00 Prague, Czech Republic
| | - Danica Sabolová
- Department of Biochemistry, Faculty of Science, P.J.Šafárik University, Moyzesova 11, 041 54 Košice, Slovak Republic
| | - Ivona Kožárová
- Department of Food Hygiene, Technology and Safety, University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81 Košice, Slovak Republic
| | - Ľudmila Balážová
- Department of Pharmaceutical Technology, Pharmacognosy and Botany, University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81 Košice, Slovak Republic
| | - Mária Vilková
- NMR laboratory, Faculty of Science, P.J.Šafárik University, Moyzesova 11, 041 54 Košice, Slovak Republic
| | - Martin Kello
- Department of Pharmacology, Faculty of Medicine, P.J.Šafárik University, Trieda SNP 1, 040 11 Košice, Slovak Republic
| | - Alan Liška
- Department of Molecular Electrochemistry and Catalysis, J. Heyrovský Institute of Physical Chemistry of the CAS, Dolejškova 3/2155, 182 23 Praha 8, Czech Republic
| | - Zuzana Vargová
- Department of Inorganic Chemistry, Faculty of Science, P.J.Šafárik University, Moyzesova 11, 041 54 Košice, Slovak Republic.
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Ghourchian H, Pecho RDC, Karimi-Dehkordi M, Mazandarani A, Ghajari G, Piri-Gharaghie T. Novel Niosome-Encapsulated 2,5-Diketopiperazine (BHPPD): Synthesis, Formulation, and Anti-breast Cancer Activity. Appl Biochem Biotechnol 2024; 196:3126-3147. [PMID: 37624507 DOI: 10.1007/s12010-023-04687-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2023] [Indexed: 08/26/2023]
Abstract
In the course of this investigation, a brand-new noisome-encapsulated 2,5-diketopiperazine (BHPPD) was developed, synthesized, and assessed. Utilizing CCK-8, invasion screens, MTT test, flow cytometry, and cell cycle analysis, we evaluated the anti-breast cancer properties of niosome-encapsulated BHPPD. Apoptosis-related gene expression and cytotoxicity was measured using quantitative real-time PCR and MTT assays. This meta-analysis showed a significant drug-binding affinity for intestinal protease. The spherical mean diameters of the free BHPPD, the F1 niosomal-BHPPD, and the F2 niosomal-BHPPD were all determined to be108.91 ± 4.2, 129.13 ± 7.2 nm, and 149.43 ± 3.2 nm, respectively. Also, it was found that the entrapment efficiency (EE%) of the F1 formulations of BHPPD that was niosome-encapsulated was 81.01 0.09% and that it was 70.22 0.13%, respectively. Early, late, necrotic, and viable MCF-7 cells were present in the cells with F1 formulation in proportions of 38.24%, 34.34%, 4.02%, and 23.40%, respectively. Compared to the control group, the treatment group's expression of the genes P57, Prkca, MDM4, Map2k6, and FADD was considerably greater (P < 0.001). Furthermore, compared to control cells, cells in the treatment group expressed less BCL2 and survival genes (P < 0.001). Moreover, formulations of BHPPD encapsulated in niosomes showed a biocompatible nanoscale delivery method and exhibited little cytotoxicity against the HEK-293 standard cell line. According to the findings, formulations of BHPPD with niosome-encapsulation might be viable for boosting anticancer activity.
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Affiliation(s)
- Hedieh Ghourchian
- Department of Biology, Faculty of Biological Science, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | | | - Maryam Karimi-Dehkordi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - Aynaz Mazandarani
- Department of Molecular and Cell Biology, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran
| | - Ghazal Ghajari
- Department of Cell and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Tohid Piri-Gharaghie
- Biotechnology Research Center, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran.
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Ceravolo IP, Leoni LF, Krettli AU, Murta SMF, Resende DDM, Cruz MGFDML, Varejão JOS, Mendes LL, Varejão EVV, Kohlhoff M. Novel 2,5-Diketopiperazines with In Vitro Activities against Protozoan Parasites of Tropical Diseases. Pharmaceuticals (Basel) 2024; 17:223. [PMID: 38399438 PMCID: PMC10893061 DOI: 10.3390/ph17020223] [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: 11/14/2023] [Revised: 12/21/2023] [Accepted: 12/23/2023] [Indexed: 02/25/2024] Open
Abstract
Malaria, Chagas disease, and leishmaniasis are tropical diseases caused by protozoan parasites of the genera Plasmodium, Trypanosoma and Leishmania, respectively. These diseases constitute a major burden on public health in several regions worldwide, mainly affecting low-income populations in economically poor countries. Severe side effects of currently available drug treatments and the emergence of resistant parasites need to be addressed by the development of novel drug candidates. Natural 2,5-Diketopiperazines (2,5-DKPs) constitute N-heterocyclic secondary metabolites with a wide range of biological activities of medicinal interest. Its structural and physicochemical properties make the 2,5-DKP ring a versatile, peptide-like, and stable pharmacophore attractive for synthetic drug design. In the present work, twenty-three novel synthetic 2,5-DKPs, previously synthesized through the versatile Ugi multicomponent reaction, were assayed for their anti-protozoal activities against P. falciparum, T. cruzi, and L. infantum. Some of the 2,5-DKPs have shown promising activities against the target protozoans, with inhibitory concentrations (IC50) ranging from 5.4 to 9.5 µg/mL. The most active compounds also show low cytotoxicity (CC50), affording selectivity indices ≥ 15. Results allowed for observing a clear relationship between the substitution pattern at the aromatic rings of the 2,5-DKPs and their corresponding anti-Plasmodium activity. Finally, calculated drug-like properties of the compounds revealed points for further structure optimization of promising drug candidates.
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Affiliation(s)
- Isabela P. Ceravolo
- Laboratory of Immunopathology, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil; (I.P.C.); (L.F.L.); (A.U.K.)
| | - Letícia F. Leoni
- Laboratory of Immunopathology, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil; (I.P.C.); (L.F.L.); (A.U.K.)
| | - Antoniana U. Krettli
- Laboratory of Immunopathology, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil; (I.P.C.); (L.F.L.); (A.U.K.)
| | - Silvane M. F. Murta
- Laboratory of Functional Genomics of Parasites, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil; (S.M.F.M.); (D.d.M.R.); (M.G.F.d.M.L.C.)
| | - Daniela de M. Resende
- Laboratory of Functional Genomics of Parasites, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil; (S.M.F.M.); (D.d.M.R.); (M.G.F.d.M.L.C.)
| | - Mariza G. F. de M. L. Cruz
- Laboratory of Functional Genomics of Parasites, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil; (S.M.F.M.); (D.d.M.R.); (M.G.F.d.M.L.C.)
| | - Jodieh O. S. Varejão
- Laboratory of Natural Product Chemistry Studies and Organic Synthesis, Federal University of Viçosa (UFV), Av. PH Rolfs, s/n, Viçosa 36570-900, Brazil; (J.O.S.V.); (L.L.M.); (E.V.V.V.)
| | - Lorena L. Mendes
- Laboratory of Natural Product Chemistry Studies and Organic Synthesis, Federal University of Viçosa (UFV), Av. PH Rolfs, s/n, Viçosa 36570-900, Brazil; (J.O.S.V.); (L.L.M.); (E.V.V.V.)
| | - Eduardo V. V. Varejão
- Laboratory of Natural Product Chemistry Studies and Organic Synthesis, Federal University of Viçosa (UFV), Av. PH Rolfs, s/n, Viçosa 36570-900, Brazil; (J.O.S.V.); (L.L.M.); (E.V.V.V.)
| | - Markus Kohlhoff
- Laboratory of Bioactive Natural Product Chemistry, René Rachou Institute (IRR), Oswaldo Cruz Foundation (FIOCRUZ), Av. Augusto de Lima, 1715, Belo Horizonte 30190-002, Brazil
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Tasdemir D, Scarpato S, Utermann-Thüsing C, Jensen T, Blümel M, Wenzel-Storjohann A, Welsch C, Echelmeyer VA. Epiphytic and endophytic microbiome of the seagrass Zostera marina: Do they contribute to pathogen reduction in seawater? THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168422. [PMID: 37956849 DOI: 10.1016/j.scitotenv.2023.168422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 10/27/2023] [Accepted: 11/06/2023] [Indexed: 11/15/2023]
Abstract
Seagrass meadows provide crucial ecosystem services for coastal environments and were shown to reduce the abundance of waterborne pathogens linked to infections in humans and marine organisms in their vicinity. Among potential drivers, seagrass phenolics released into seawater have been linked to pathogen suppression, but the potential involvement of the seagrass microbiome has not been investigated. We hypothesized that the microbiome of the eelgrass Zostera marina, especially the leaf epiphytes that are at direct interface between the seagrass host and the surrounding seawater, inhibit waterborne pathogens thereby contributing to their removal. Using a culture-dependent approach, we isolated 88 bacteria and fungi associated with the surfaces and inner tissues of the eelgrass leaves (healthy and decaying) and the roots. We assessed the antibiotic activity of microbial extracts against a large panel of common aquatic, human (fecal) and plant pathogens, and mined the metabolome of the most active extracts. The healthy leaf epibiotic bacteria, particularly Streptomyces sp. strain 131, displayed broad-spectrum antibiotic activity superior to some control drugs. Gram-negative bacteria abundant on healthy leaf surfaces, and few endosphere-associated bacteria and fungi also displayed remarkable activities. UPLC-MS/MS-based untargeted metabolomics analyses showed rich specialized metabolite repertoires with low annotation rates, indicating the presence of many undescribed antimicrobials in the extracts. This study contributes to our understanding on microbial and chemical ecology of seagrasses, implying potential involvement of the seagrass microbiome in suppression of pathogens in seawater. Such effect is beneficial for the health of ocean and human, especially in the context of climate change that is expected to exacerbate all infectious diseases. It may also assist future seagrass conservation and management strategies.
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Affiliation(s)
- Deniz Tasdemir
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel 24106, Germany; Faculty of Mathematics and Natural Sciences, Kiel University, Kiel 24118, Germany.
| | - Silvia Scarpato
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel 24106, Germany
| | - Caroline Utermann-Thüsing
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel 24106, Germany
| | - Timo Jensen
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel 24106, Germany
| | - Martina Blümel
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel 24106, Germany
| | - Arlette Wenzel-Storjohann
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel 24106, Germany
| | - Claudia Welsch
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel 24106, Germany
| | - Vivien Anne Echelmeyer
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel 24106, Germany
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El-Mowafi SA, Konshina AG, Mohammed EHM, Krylov NA, Efremov RG, Parang K. Structural Analysis and Activity Correlation of Amphiphilic Cyclic Antimicrobial Peptides Derived from the [W 4R 4] Scaffold. Molecules 2023; 28:8049. [PMID: 38138539 PMCID: PMC10745345 DOI: 10.3390/molecules28248049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/08/2023] [Accepted: 12/10/2023] [Indexed: 12/24/2023] Open
Abstract
In our ongoing quest to design effective antimicrobial peptides (AMPs), this study aimed to elucidate the mechanisms governing cyclic amphiphilic AMPs and their interactions with membranes. The objective was to discern the nature of these interactions and understand how peptide sequence and structure influence antimicrobial activity. We introduced modifications into the established cyclic AMP peptide, [W4R4], incorporating an extra aromatic hydrophobic residue (W), a positively charged residue (R), or the unique 2,5-diketopiperazine (DKP). This study systematically explored the structure-activity relationships (SARs) of a series of cyclic peptides derived from the [W4R4] scaffold, including the first synthesis and evaluation of [W4R4(DKP)]. Structural, dynamic, hydrophobic, and membrane-binding properties of four cyclic peptides ([W4R4], [W5R4], [W4R5], [W4R4(DKP)]) were explored using molecular dynamics simulations within a DOPC/DOPG lipid bilayer that mimics the bacterial membrane. The results revealed distinct SARs linking antimicrobial activity to parameters such as conformational plasticity, immersion depth in the bilayer, and population of the membrane binding mode. Notably, [W4R5] exhibited an optimal "activity/binding to the bacterial membrane" pattern. This multidisciplinary approach efficiently decoded finely regulated SAR profiles, laying a foundation for the rational design of novel antimicrobial peptides.
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Affiliation(s)
- Shaima A. El-Mowafi
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (S.A.E.-M.); (E.H.M.M.)
- Peptide Chemistry Department, National Research Centre, Dokki, Cairo 12622, Egypt
| | - Anastasia G. Konshina
- M.M. Shemyakin & Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Street, 16/10, 117997 Moscow, Russia; (A.G.K.); (N.A.K.)
| | - Eman H. M. Mohammed
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (S.A.E.-M.); (E.H.M.M.)
- Department of Chemistry, Faculty of Science, Menoufia University, Shebin El-Koam 51132, Egypt
| | - Nikolay A. Krylov
- M.M. Shemyakin & Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Street, 16/10, 117997 Moscow, Russia; (A.G.K.); (N.A.K.)
| | - Roman G. Efremov
- M.M. Shemyakin & Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Street, 16/10, 117997 Moscow, Russia; (A.G.K.); (N.A.K.)
- Department of Applied Mathematics, National Research University Higher School of Economics, Myasnitskaya ul. 20, 101000 Moscow, Russia
| | - Keykavous Parang
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Harry and Diane Rinker Health Science Campus, Irvine, CA 92618, USA; (S.A.E.-M.); (E.H.M.M.)
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Galvez-Llompart M, Zanni R, Manyes L, Meca G. Elucidating the mechanism of action of mycotoxins through machine learning-driven QSAR models: Focus on lipid peroxidation. Food Chem Toxicol 2023; 182:114120. [PMID: 37944785 DOI: 10.1016/j.fct.2023.114120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/06/2023] [Accepted: 10/23/2023] [Indexed: 11/12/2023]
Abstract
Understanding the mechanisms of mycotoxin toxicity is crucial for establishing effective guidelines and preventive strategies. In this study, machine learning models based on quantitative structure-activity relationship (QSAR) were employed to predict the lipid peroxidation activity of mycotoxins. Two different algorithms using Linear Discriminant Analysis (LDA) and Artificial Neural Networks (ANNs) have been trained using a dataset of 70 mycotoxins. The LDA model had an average correct classification rate of 91%, while the ANN model achieved a perfect 100% classification rate. Following an internal validation process, the models were utilized to predict mycotoxins with known lipid peroxidation activity. The machine learning models achieved an 88% correct classification rate for these mycotoxins. Finally, by utilizing classified algorithms, the study aimed to infer the mechanism of action related to lipid peroxidation for 91 unstudied mycotoxins. These models provide a fast, accurate, and cost-effective means to assess the potential toxicity and mechanism of action of mycotoxins. The findings of this study contribute to a comprehensive understanding of mycotoxin toxicology and assist researchers and toxicologists in evaluating health risks associated with mycotoxin exposure and developing appropriate preventive strategies and potential therapeutic interventions to mitigate the effects of mycotoxins.
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Affiliation(s)
- Maria Galvez-Llompart
- Department of Preventive Medicine and Public Health, Food Science, Toxicology and Forensic Medicine, Faculty of Pharmacy, University of Valencia, 46100, Burjassot, Valencia, Spain; Department of Physical Chemistry, University of Valencia, 46100, Burjassot, Valencia, Spain.
| | - Riccardo Zanni
- Department of Physical Chemistry, University of Valencia, 46100, Burjassot, Valencia, Spain
| | - Lara Manyes
- Department of Preventive Medicine and Public Health, Food Science, Toxicology and Forensic Medicine, Faculty of Pharmacy, University of Valencia, 46100, Burjassot, Valencia, Spain
| | - Giuseppe Meca
- Department of Preventive Medicine and Public Health, Food Science, Toxicology and Forensic Medicine, Faculty of Pharmacy, University of Valencia, 46100, Burjassot, Valencia, Spain
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Gholami H, Cornali BM. Diastereoselective Spirocyclization: Entry to Spirocyclic Diketopiperazines. Org Lett 2023; 25:7822-7826. [PMID: 37857286 DOI: 10.1021/acs.orglett.3c03031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
We report a novel approach to access spirocyclic compounds containing a diketopiperazine (DKP) motif fused on a pyrrolidine ring. The shared spirocyclic carbon is at the ketone oxidation state, bearing two carbon-nitrogen bonds, one of which is introduced stereoselectively during the cyclization event. The reaction proceeds through an acid-catalyzed cyclization of a pendent chiral aminoamide unit onto a 2,3-dehydroproline amide moiety with up to >98:2 diastereoselectivity. We have demonstrated the generality of this methodology and its applicability to access chemically diverse DKP-containing structures. The extent of stereoinduction and how it varies according to the bulkiness of the substituent on the pendent aminoamide is demonstrated through a diverse substrate set. This methodology gives access to an underexplored spirocyclic diketopiperazine motif that may be useful in identifying new bioactive molecules.
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Affiliation(s)
- Hadi Gholami
- Janssen Research and Development, 3210 Merryfield Row, San Diego, California 92121, United States
| | - Brandon M Cornali
- Janssen Research and Development, 3210 Merryfield Row, San Diego, California 92121, United States
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Alamdari-Palangi V, Jaberi KR, Shahverdi M, Naeimzadeh Y, Tajbakhsh A, Khajeh S, Razban V, Fallahi J. Recent advances and applications of peptide-agent conjugates for targeting tumor cells. J Cancer Res Clin Oncol 2023; 149:15249-15273. [PMID: 37581648 DOI: 10.1007/s00432-023-05144-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 07/08/2023] [Indexed: 08/16/2023]
Abstract
BACKGROUND Cancer, being a complex disease, presents a major challenge for the scientific and medical communities. Peptide therapeutics have played a significant role in different medical practices, including cancer treatment. METHOD This review provides an overview of the current situation and potential development prospects of anticancer peptides (ACPs), with a particular focus on peptide vaccines and peptide-drug conjugates for cancer treatment. RESULTS ACPs can be used directly as cytotoxic agents (molecularly targeted peptides) or can act as carriers (guiding missile) of chemotherapeutic agents and radionuclides by specifically targeting cancer cells. More than 60 natural and synthetic cationic peptides are approved in the USA and other major markets for the treatment of cancer and other diseases. Compared to traditional cancer treatments, peptides exhibit anticancer activity with high specificity and the ability to rapidly kill target cancer cells. ACP's target and kill cancer cells via different mechanisms, including membrane disruption, pore formation, induction of apoptosis, necrosis, autophagy, and regulation of the immune system. Modified peptides have been developed as carriers for drugs, vaccines, and peptide-drug conjugates, which have been evaluated in various phases of clinical trials for the treatment of different types of solid and leukemia cancer. CONCLUSIONS This review highlights the potential of ACPs as a promising therapeutic option for cancer treatment, particularly through the use of peptide vaccines and peptide-drug conjugates. Despite the limitations of peptides, such as poor metabolic stability and low bioavailability, modified peptides show promise in addressing these challenges. Various mechanism of action of anticancer peptides. Modes of action against cancer cells including: inducing apoptosis by cytochrome c release, direct cell membrane lysis (necrosis), inhibiting angiogenesis, inducing autophagy-mediated cell death and immune cell regulation.
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Affiliation(s)
- Vahab Alamdari-Palangi
- Department of Molecular Medicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, 7133654361, Iran
| | - Khojaste Rahimi Jaberi
- Department of Neuroscience, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mahshid Shahverdi
- Medical Biotechnology Research Center, Arak University of Medical Sciences, Arak, Iran
| | - Yasaman Naeimzadeh
- Department of Molecular Medicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, 7133654361, Iran
| | - Amir Tajbakhsh
- Department of Molecular Medicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, 7133654361, Iran
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sahar Khajeh
- Bone and Joint Diseases Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Vahid Razban
- Department of Molecular Medicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, 7133654361, Iran.
| | - Jafar Fallahi
- Department of Molecular Medicine, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, 7133654361, Iran.
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Walker KL, Loach RP, Movassaghi M. Total synthesis of complex 2,5-diketopiperazine alkaloids. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2023; 90:159-206. [PMID: 37716796 PMCID: PMC10955524 DOI: 10.1016/bs.alkal.2023.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/18/2023]
Abstract
The 2,5-diketopiperazine (DKP) motif is present in many biologically relevant, complex natural products. The cyclodipeptide substructure offers structural rigidity and stability to proteolysis that makes these compounds promising candidates for medical applications. Due to their fascinating molecular architecture, synthetic organic chemists have focused significant effort on the total synthesis of these compounds. This review covers many such efforts on the total synthesis of DKP containing complex alkaloid natural products.
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Affiliation(s)
- Katherine L Walker
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Richard P Loach
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, United States
| | - Mohammad Movassaghi
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, United States.
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Witkowski M, Trzybiński D, Pawlędzio S, Woźniak K, Dzwolak W, Królikowska A. The Structural Characterisation and DFT-Aided Interpretation of Vibrational Spectra for Cyclo(l-Cys-d-Cys) Cyclic Dipeptide in a Solid State. Molecules 2023; 28:5902. [PMID: 37570871 PMCID: PMC10421304 DOI: 10.3390/molecules28155902] [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: 06/30/2023] [Revised: 07/25/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023] Open
Abstract
Cyclic dipeptides with two intramolecular peptide bonds forming a six-membered 2,5-diketopiperazine ring are gaining significant attention due to their biological and chemical properties. Small changes in the local geometry of such molecules (from cis to trans) can lead to significant structural differences. This work presents the results of a study of cyclo(l-Cys-d-Cys), a dipeptide comprising two cysteine molecules in opposite chiral configurations, with the functional groups situated at both sides of the diketopiperazine ring. X-ray diffraction (XRD) experiment revealed that the molecule crystallises in the P-1 space group, which includes the centre of inversion. The IR and Raman vibrational spectra of the molecule were acquired and interpreted in terms of the potential energy distribution (PED) according to the results of density functional theory (DFT) calculations. The DFT-assisted analysis of energy frameworks for the hydrogen bond network within molecular crystals was performed to support the interpretation of X-ray structural data. The optimisation of the computational model based on three-molecule geometry sections from the crystallographic structure, selected to appropriately reflect the intermolecular interactions responsible for the formation of 1D molecular tapes in cyclo(l-Cys-d-Cys) crystal, allowed for better correspondence between theoretical and experimental vibrational spectra. This work can be considered the first complete structural characterisation of cyclo(l-Cys-d-Cys), complemented via vibrational spectroscopy results with full band assignment aided with the use of the DFT method.
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Affiliation(s)
- Marcin Witkowski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland
| | - Damian Trzybiński
- Biological and Chemical Research Centre, Chemistry Department, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
| | - Sylwia Pawlędzio
- Biological and Chemical Research Centre, Chemistry Department, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Krzysztof Woźniak
- Biological and Chemical Research Centre, Chemistry Department, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
| | - Wojciech Dzwolak
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland
- Biological and Chemical Research Centre, Chemistry Department, University of Warsaw, Żwirki i Wigury 101, 02-089 Warszawa, Poland
| | - Agata Królikowska
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland
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11
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Speina E, Wilczek M, Mieczkowski A. Dimeric Benzodiazepines as Peptide Mimetics to Overcome p53-Dependent Drug Resistance of Tumors. Biomolecules 2023; 13:biom13020291. [PMID: 36830660 PMCID: PMC9953746 DOI: 10.3390/biom13020291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/26/2023] [Accepted: 01/31/2023] [Indexed: 02/08/2023] Open
Abstract
Benzodiazepines that consist of one α- and one β-amino acid residues linked together in a seven-membered heterocyclic ring could be treated as small, rigid, cyclic dipeptides capable of exhibiting a wide range of biological activities. During our research on novel analogues of anthramycin, a tricyclic antibiotic benzodiazepine, we developed the synthesis of two benzodiazepine dimers, obtained through the cyclization of appropriate linear tripeptides. The synthesized compounds were tested on a panel of seven cancer and normal cell lines. The developed molecules exhibited promising cytotoxic activity against the lung cancer cell lines A549 and NCI-H1299 and the epidermoid carcinoma cell line A-431. Moreover, they showed significant selectivity compared to the reference cell lines (BJ-human normal skin fibroblasts and MRC-5-human normal lung cell line). When tested on two isogenic cell lines, HCT116 and HCT116p53-/- (colon cancer), contrary to cisplatin being used as a positive control, the obtained compounds showed a cytotoxic effect independent of the p53 protein status. For the above reasons, the obtained compounds can be considered a new group of promising anticancer agents, useful in the fight against p53-dependent drug resistance in cancers. They can also be treated as convenient, leading structures suitable for further optimization and searching for more active and selective molecules.
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Affiliation(s)
- Elżbieta Speina
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland
| | - Marcin Wilczek
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Adam Mieczkowski
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland
- Correspondence:
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12
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Synthesis of uniquely substituted 4H-Chromeno[2,3-d] pyrimidin-2-one derivatives by l-Proline catalyzed green chemistry method. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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13
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Zheng X, Nie W, Xu J, Zhang H, Liang X, Chen Z. Characterization of antifungal cyclic dipeptides of Lacticaseibacillus paracasei ZX1231 and active packaging film prepared with its cell-free supernatant and bacterial nanocellulose. Food Res Int 2022; 162:112024. [PMID: 36461308 DOI: 10.1016/j.foodres.2022.112024] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 08/13/2022] [Accepted: 10/02/2022] [Indexed: 11/24/2022]
Abstract
Fungal infection and/or spoilage are major concerns of crop and food security worldwide, prompting the developments and application of various antimicrobial agents. In this study, nine strains of lactic acid bacteria (LAB) with antifungal activities were isolated from the traditional Chinese fermented wort of Meigui rice vinegar, where fungi coexist. The cell-free supernatant (CFS) of Lacticaseibacillus paracasei ZX1231 exhibited significant inhibitory activities against Aspergillus niger, Penicillium citrinum, Penicillium polonicum, Zygosaccharomyces rouxii, Talaromyces rubrifaciens, and Candida albicans. Among the four cyclic dipeptides (CDPs) uncovered from the CFS, cyclo(Phe-Leu) and cyclo(Anthranily-Pro) were found in the family Lactobacillaceae for the first time, which inhibited the C. albicans filamentation by targeting upon RAS1-cAMP-PKA pathway. CFS antifungal activities were optimally combined with a bacterial nanocellulose (BNC) matrix to prepare the active quality packaging CFS-BNC films. The challenge tests confirmed that CFS-BNC films significantly inhibited the fungi growth and thus prolonged the shelf life of bread, beef, cheese and soy sauce. L. paracasei ZX1231, its CFS, and the CFS-BNC film may have extensive applications in food preservation and food packaging.
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14
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Bispyrrolidinoindoline Epi(poly)thiodioxopiperazines (BPI-ETPs) and Simplified Mimetics: Structural Characterization, Bioactivities, and Total Synthesis. Molecules 2022; 27:molecules27217585. [DOI: 10.3390/molecules27217585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 11/09/2022] Open
Abstract
Within the 2,5-dioxopiperazine-containing natural products generated by “head-to-tail” cyclization of peptides, those derived from tryptophan allow further structural diversification due to the rich chemical reactivity of the indole heterocycle, which can generate tetracyclic fragments of hexahydropyrrolo[2,3-b]indole or pyrrolidinoindoline skeleton fused to the 2,5-dioxopiperazine. Even more complex are the dimeric bispyrrolidinoindoline epi(poly)thiodioxopiperazines (BPI-ETPs), since they feature transannular (poly)sulfide bridges connecting C3 and C6 of their 2,5-dioxopiperazine rings. Homo- and heterodimers composed of diastereomeric epi(poly)thiodioxopiperazines increase the complexity of the family. Furthermore, putative biogenetically generated downstream metabolites with C11 and C11’-hydroxylated cores, as well as deoxygenated and/or oxidized side chain counterparts, have also been described. The isolation of these complex polycyclic tryptophan-derived alkaloids from the classical sources, their structural characterization, the description of the relevant biological activities and putative biogenetic routes, and the synthetic efforts to generate and confirm their structures and also to prepare and further evaluate structurally simple analogs will be reported.
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15
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A novel cyclic dipeptide from Lactiplantibacillus plantarum MC39 inhibits proliferation of multidrug-resistant Klebsiella pneumoniae W8 and Enterobacter hormaechei U25. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2022.105553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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16
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Chavda VP, Solanki HK, Davidson M, Apostolopoulos V, Bojarska J. Peptide-Drug Conjugates: A New Hope for Cancer Management. Molecules 2022; 27:7232. [PMID: 36364057 PMCID: PMC9658517 DOI: 10.3390/molecules27217232] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/29/2022] [Accepted: 10/18/2022] [Indexed: 08/07/2023] Open
Abstract
Cancer remains the leading cause of death worldwide despite advances in treatment options for patients. As such, safe and effective therapeutics are required. Short peptides provide advantages to be used in cancer management due to their unique properties, amazing versatility, and progress in biotechnology to overcome peptide limitations. Several appealing peptide-based therapeutic strategies have been developed. Here, we provide an overview of peptide conjugates, the better equivalents of antibody-drug conjugates, as the next generation of drugs for required precise targeting, enhanced cellular permeability, improved drug selectivity, and reduced toxicity for the efficient treatment of cancers. We discuss the basic components of drug conjugates and their release action, including the release of cytotoxins from the linker. We also present peptide-drug conjugates under different stages of clinical development as well as regulatory and other challenges.
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Affiliation(s)
- Vivek P. Chavda
- Department of Pharmaceutics and Pharmaceutical Technology, L M College of Pharmacy, Ahmedabad 380008, Gujarat, India
| | - Hetvi K. Solanki
- Department of Pharmaceutics and Pharmaceutical Technology, L M College of Pharmacy, Ahmedabad 380008, Gujarat, India
| | - Majid Davidson
- Institute for Health and Sport, Victoria University, Melbourne, VIC 3030, Australia
| | - Vasso Apostolopoulos
- Institute for Health and Sport, Victoria University, Melbourne, VIC 3030, Australia
- Immunology Program, Australian Institute for Musculoskeletal Science, Melbourne, VIC 3021, Australia
| | - Joanna Bojarska
- Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, 116 Zeromskiego Street, 90-924 Lodz, Poland
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17
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Cyclodipeptides: From Their Green Synthesis to Anti-Age Activity. Biomedicines 2022; 10:biomedicines10102342. [PMID: 36289604 PMCID: PMC9598056 DOI: 10.3390/biomedicines10102342] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/11/2022] [Accepted: 09/13/2022] [Indexed: 12/24/2022] Open
Abstract
Cyclodipeptides (CDPs) or diketopiperazines (DKPs) are often found in nature and in foodstuff and beverages and have attracted great interest for their bioactivities, biocompatibility, and biodegradability. In the laboratory, they can be prepared by green procedures, such as microwave-assisted cyclization of linear dipeptides in water, as performed in this study. In particular, five CDPs were prepared and characterized by a variety of methods, including NMR and ESI-MS spectroscopies and single-crystal X-ray diffraction (XRD), and their cytocompatibility and anti-aging activity was tested in vitro, as well as their ability to penetrate the different layers of the skin. Although their mechanism of action remains to be elucidated, this proof-of-concept study lays the basis for their future use in anti-age cosmetic applications.
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18
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Hunting for Novel Routes in Anticancer Drug Discovery: Peptides against Sam-Sam Interactions. Int J Mol Sci 2022; 23:ijms231810397. [PMID: 36142306 PMCID: PMC9499636 DOI: 10.3390/ijms231810397] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/02/2022] [Accepted: 09/02/2022] [Indexed: 01/10/2023] Open
Abstract
Among the diverse protein binding modules, Sam (Sterile alpha motif) domains attract attention due to their versatility. They are present in different organisms and play many functions in physiological and pathological processes by binding multiple partners. The EphA2 receptor contains a Sam domain at the C-terminus (EphA2-Sam) that is able to engage protein regulators of receptor stability (including the lipid phosphatase Ship2 and the adaptor Odin). Ship2 and Odin are recruited by EphA2-Sam through heterotypic Sam-Sam interactions. Ship2 decreases EphA2 endocytosis and consequent degradation, producing chiefly pro-oncogenic outcomes in a cellular milieu. Odin, through its Sam domains, contributes to receptor stability by possibly interfering with ubiquitination. As EphA2 is upregulated in many types of tumors, peptide inhibitors of Sam-Sam interactions by hindering receptor stability could function as anticancer therapeutics. This review describes EphA2-Sam and its interactome from a structural and functional perspective. The diverse design strategies that have thus far been employed to obtain peptides targeting EphA2-mediated Sam-Sam interactions are summarized as well. The generated peptides represent good initial lead compounds, but surely many efforts need to be devoted in the close future to improve interaction affinities towards Sam domains and consequently validate their anticancer properties.
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19
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Liu H, An M, Si H, Shan Y, Xu C, Hu G, Xie Y, Liu D, Li S, Qiu R, Zhang C, Wu Y. Identification of Cyclic Dipeptides and a New Compound (6-(5-Hydroxy-6-methylheptyl)-5,6-dihydro-2H-pyran-2-one) Produced by Streptomyces fungicidicus against Alternaria solani. Molecules 2022; 27:molecules27175649. [PMID: 36080412 PMCID: PMC9458140 DOI: 10.3390/molecules27175649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 08/26/2022] [Accepted: 08/30/2022] [Indexed: 11/30/2022] Open
Abstract
As an important microbial resource, Actinomycetes, especially Streptomyces, have important application values in medicine and biotechnology. Streptomyces fungicidicus SYH3 was isolated from soil samples in tomato-growing areas and showed good inhibitory effects on Alternaria solani in tomato. To obtain pure active compounds, SYH3 fermentation broth was subjected to XAD-16 macroporous resin and silica gel column chromatography. Combined with the repeated preparation and separation of preparative high-performance liquid chromatography (HPLC), a total of four monomer compounds were obtained after activity tracking. Compound 4 was identified as a new six-membered lactone ring compound named 6-(5-hydroxy-6-methylheptyl)-5,6-dihydro-2H-pyran-2-one by 1D and 2D nuclear magnetic resonance (NMR) data and mass spectrometry (MS). The other three active compounds belong to the cyclodipeptide, and their half maximal inhibitory concentration (IC50) values against A. solani were 43.4, 42.9, and 30.6 μg/mL, respectively. Compound 4 significantly inhibited the spore germination and induced swollen and deformed local hyphae of A. solani with an IC50 value of 24.9 μg/mL. Compound 4 also had broad-spectrum antifungal activity and had a good antifungal effect on the tested plant-pathogenic fungi. The modes of action of new compound (4) still require further investigation, representing a novel and effective anti-fungal agent for future application.
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Affiliation(s)
- He Liu
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Mengnan An
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Hongyang Si
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Yuhang Shan
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
| | - Chuantao Xu
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
- Luzhou Branch of Sichuan Province Tobacco Company, Luzhou 646000, China
| | - Gang Hu
- Sichuan Province Tobacco Company, Chengdu 610017, China
| | - Yunbo Xie
- Sichuan Province Tobacco Company, Chengdu 610017, China
| | - Dongyang Liu
- Liangshanzhou Branch of Sichuan Province Tobacco Company, Xichang 615000, China
| | - Shujun Li
- Key Laboratory for Green Preservation & Control of Tobacco Diseases and Pests in Huanghuai Growing Area, Tobacco Research Institute, Henan Academy of Agricultural Sciences, Xuchang 461000, China
| | - Rui Qiu
- Key Laboratory for Green Preservation & Control of Tobacco Diseases and Pests in Huanghuai Growing Area, Tobacco Research Institute, Henan Academy of Agricultural Sciences, Xuchang 461000, China
| | - Chong Zhang
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
- Correspondence: (C.Z.); (Y.W.)
| | - Yuanhua Wu
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
- Correspondence: (C.Z.); (Y.W.)
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20
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Long Y, Zheng S, Feng Y, Yang Z, Xu X, Song H. Kinetic Solvent Isotope Effect in P450-Mediated Cyclization in Indolactams: Evidence for Branched Reactions and Guide for Their Modulation in Heterocycle Chemoenzymatic Synthesis. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yan Long
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Shuo Zheng
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Yuxin Feng
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Zixuan Yang
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Xinlei Xu
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Heng Song
- College of Chemistry and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
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21
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Sweatman MB, Afify ND, Ferreiro-Rangel CA, Jorge M, Sefcik J. Molecular Dynamics Investigation of Clustering in Aqueous Glycine Solutions. J Phys Chem B 2022; 126:4711-4722. [PMID: 35729500 PMCID: PMC9251761 DOI: 10.1021/acs.jpcb.2c01975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
![]()
Recent experiments
with undersaturated aqueous glycine solutions
have repeatedly exhibited the presence of giant liquid-like clusters
or nanodroplets around 100 nm in diameter. These nanodroplets re-appear
even after careful efforts for their removal and purification of the
glycine solution. The composition of these clusters is not clear,
although it has been suggested that they are mainly composed of glycine,
a small and very soluble amino acid. To gain insights into this phenomenon,
we study the aggregation of glycine in aqueous solutions at concentrations
below the experimental solubility limit using large-scale molecular
dynamics simulations under ambient conditions. Three protonation states
of glycine (zwitterion = GLZ, anion = GLA, and cation = GLC) are simulated
using molecular force fields based on the 1.14*CM1A partial charge
scheme, which incorporates the OPLS all-atom force field and TIP3P
water. When initiated from dispersed states, we find that giant clusters
do not form in our simulations unless salt impurities are present.
Moreover, if simulations are initiated from giant cluster states,
we find that they tend to dissolve in the absence of salt impurities.
Therefore, the simulation results provide little support for the possibility
that the giant clusters seen in experiments are composed purely of
glycine (and water). Considering that strenuous efforts are made in
experiments to remove impurities such as salt, we propose that the
giant clusters observed might instead result from the aggregation
of reaction products of aqueous glycine, such as diketopiperazine
or other oligoglycines which may be difficult to separate from glycine
using conventional methods, or their co-aggregation with glycine.
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Affiliation(s)
- Martin B Sweatman
- School of Engineering, The University of Edinburgh, The King's Buildings, Sanderson Building, Mayfield Road, Edinburgh EH9 3JL, U.K
| | - Nasser D Afify
- School of Engineering, The University of Edinburgh, The King's Buildings, Sanderson Building, Mayfield Road, Edinburgh EH9 3JL, U.K
| | - Carlos A Ferreiro-Rangel
- School of Engineering, The University of Edinburgh, The King's Buildings, Sanderson Building, Mayfield Road, Edinburgh EH9 3JL, U.K
| | - Miguel Jorge
- Department of Chemical and Process Engineering, Faculty of Engineering, University of Strathclyde, James Weir Building, Montrose Street, Glasgow G1 1XJ, U.K
| | - Jan Sefcik
- Department of Chemical and Process Engineering, Faculty of Engineering, University of Strathclyde, James Weir Building, Montrose Street, Glasgow G1 1XJ, U.K
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22
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Structural and Biofunctional Insights into the Cyclo(Pro-Pro-Phe-Phe-) Scaffold from Experimental and In Silico Studies: Melanoma and Beyond. Int J Mol Sci 2022; 23:ijms23137173. [PMID: 35806175 PMCID: PMC9266943 DOI: 10.3390/ijms23137173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 06/15/2022] [Accepted: 06/25/2022] [Indexed: 01/25/2023] Open
Abstract
Short peptides have great potential as safe and effective anticancer drug leads. Herein, the influence of short cyclic peptides containing the Pro-Pro-Phe-Phe sequence on patient-derived melanoma cells was investigated. Cyclic peptides such as cyclo(Leu-Ile-Ile-Leu-Val-Pro-Pro-Phe-Phe-), called CLA, and cyclo(Pro-homoPro-β3homoPhe-Phe-), called P11, exert the cytotoxic and the cytostatic effects in melanoma cells, respectively. CLA was the most active peptide as it reduced the viability of melanoma cells to 50% of control at about 10 µM, whereas P11 at about 40 µM after 48 h incubation. Interestingly, a linear derivative of P11 did not induce any effect in melanoma cells confirming previous studies showing that cyclic peptides exert better biological activity compared to their linear counterparts. According to in silico predictions, cyclic tetrapeptides show a better pharmacokinetic and toxic profile to humans than CLA. Notably, the spatial structure of those peptides containing synthetic amino acids has not been explored yet. In the Cambridge Structural Database, there is only one such cyclic tetrapeptide, cyclo((R)-β2homoPhe-D-Pro-Lys-Phe-), while in the Protein Data Bank—none. Therefore, we report the first crystal structure of cyclo(Pro-Pro-β3homoPhe-Phe-), denoted as 4B8M, a close analog of P11, which is crucial for drug discovery. Comparative molecular and supramolecular analysis of both structures was performed. The DFT findings revealed that 4B8M is well interpreted in the water solution. The results of complex Hirshfeld surface investigations on the cooperativity of interatomic contacts in terms of electrostatic and energetic features are provided. In short, the enrichment ratio revealed O…H/H…O and C…H/H…C as privileged intercontacts in the crystals in relation to basic and large supramolecular H-bonding synthon patterns. Furthermore, the ability of self-assemble 4B8M leading to a nanotubular structure is also discussed.
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23
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New Advances in Short Peptides: Looking Forward. Molecules 2022; 27:molecules27113635. [PMID: 35684571 PMCID: PMC9182370 DOI: 10.3390/molecules27113635] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 06/02/2022] [Indexed: 02/04/2023] Open
Abstract
It is beyond doubt that short peptides hold significant promise in bio-medicine, as the most versatile molecules, both structurally and functionally [...]
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24
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Antiviral Activity of a Cyclic Pro-Pro- β3-HoPhe-Phe Tetrapeptide against HSV-1 and HAdV-5. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27113552. [PMID: 35684487 PMCID: PMC9182219 DOI: 10.3390/molecules27113552] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/27/2022] [Accepted: 05/30/2022] [Indexed: 12/24/2022]
Abstract
The core of Cyclolinopeptide A (CLA, cyclo(LIILVPPFF)), responsible for its high immunosuppressive activity, contains a Pro-Pro-Phe-Phe sequence. A newly synthesized cyclic tetrapeptide, cyclo(Pro-Pro-β3-HoPhe-Phe) (denoted as 4B8M) bearing the active sequence of CLA, was recently shown to exhibit a wide array of anti-inflammatory properties in mouse models. In this investigation, we demonstrate that the peptide significantly inhibits the replication of human adenovirus C serotype 5 (HAdV-5) and Herpes simplex virus type-1 (HSV-1) in epithelial lung cell line A-549, applying Cidofovir and Acyclovir as reference drugs. Based on a previously established mechanism of its action, we propose that the peptide may inhibit virus replication by the induction of PGE2 acting via EP2/EP4 receptors in epithelial cells. In summary, we reveal a new, antiviral property of this anti-inflammatory peptide.
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25
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Cera G, Risdian C, Pira H, Wink J. Antimicrobial potential of culturable actinobacteria isolated from the Pacific oyster
Crassostrea gigas
(Bivalvia, Ostreidae). J Appl Microbiol 2022; 133:1099-1114. [DOI: 10.1111/jam.15635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 01/04/2022] [Accepted: 05/19/2022] [Indexed: 12/01/2022]
Affiliation(s)
- Guillermo Cera
- Microbial Strain Collection (MISG), Helmholtz Centre for Infection Research (HZI), 38124 Braunschweig Germany
- Marine Biology Program, Faculty of Natural Sciences and Engineering, Universidad Jorge Tadeo Lozano Santa Marta Colombia
| | - Chandra Risdian
- Microbial Strain Collection (MISG), Helmholtz Centre for Infection Research (HZI), 38124 Braunschweig Germany
- Research Unit for Clean Technology, National Research and Innovation Agency (BRIN), 40135 Bandung Indonesia
| | - Hani Pira
- Microbial Strain Collection (MISG), Helmholtz Centre for Infection Research (HZI), 38124 Braunschweig Germany
| | - Joachim Wink
- Microbial Strain Collection (MISG), Helmholtz Centre for Infection Research (HZI), 38124 Braunschweig Germany
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Ren Z, Xie L, Okyere SK, Wen J, Ran Y, Nong X, Hu Y. Antibacterial Activity of Two Metabolites Isolated From Endophytic Bacteria Bacillus velezensis Ea73 in Ageratina adenophora. Front Microbiol 2022; 13:860009. [PMID: 35602058 PMCID: PMC9121010 DOI: 10.3389/fmicb.2022.860009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 04/06/2022] [Indexed: 12/02/2022] Open
Abstract
Ageratina adenophora, as an invasive and poisonous weed, seriously affects the ecological diversity and development of animal husbandry. Weed management practitioners have reported that it is very difficult to control A. adenophora invasion. In recent years, many researchers have focused on harnessing the endophytes of the plant as a useful resource for the development of pharmacological products for human and animal use. This study was performed to identify endophytes with antibacterial properties from A. adenophora. Agar well diffusion method and 16S rRNA gene sequencing technique were used to screen and identify endophytes with antibacterial activity. The response surface methodology and prep- high-performance liquid chromatography were used to determine the optimizing fermentation conditions and isolate secondary metabolites, respectively. UV-visible spectroscopy, infrared spectroscopy, nuclear magnetic resonance, and high-resolution mass spectrum were used to determine the structures of the isolated metabolites. From the experiment, we isolated a strain of Bacillus velezensis Ea73 (GenBank no. MZ540895) with broad-spectrum antibacterial activity. We also observed that the zone of inhibition of B. velezensis Ea73 against Staphylococcus aureus was the largest when fermentation broth contained 6.55 g/L yeast extract, 6.61 g/L peptone, 20.00 g/L NaCl at broth conditions of 7.95 pH, 51.04 h harvest time, and a temperature of 27.97°C. Two antibacterial peptides, Cyclo (L-Pro-L-Val) and Cyclo (L-Leu-L-Pro), were successfully extracted from B. velezensis Ea73. These two peptides exhibited mild inhibition against S. aureus and Escherichia coli. Therefore, we isolated B. velezensis Ea73 with antibacterial activity from A. adenophora. Hence, its metabolites, Cyclo (L-Pro-L-Val) and Cyclo (L-Leu-L-Pro), could further be developed as a substitute for human and animal antibiotics.
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Affiliation(s)
- Zhihua Ren
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Yaan, China
| | - Lei Xie
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Yaan, China
| | - Samuel Kumi Okyere
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Yaan, China
| | - Juan Wen
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Yaan, China
| | - Yinan Ran
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Yaan, China
| | - Xiang Nong
- College of Life Science, Leshan Normal University, Leshan, China
| | - Yanchun Hu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Yaan, China
- *Correspondence: Yanchun Hu
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García-Domínguez P, Areal A, Alvarez R, de Lera AR. Chemical synthesis in competition with global genome mining and heterologous expression for the preparation of dimeric tryptophan-derived 2,5-dioxopiperazines. Nat Prod Rep 2022; 39:1172-1225. [PMID: 35470828 DOI: 10.1039/d2np00006g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Covering: up to the end of 2021Within the 2,5-dioxopiperazines-containing natural products, those generated from tryptophan allow further structural diversification due to the rich chemical reactivity of the indole heterocycle. The great variety of natural products, ranging from simple dimeric bispyrrolidinoindoline dioxopiperazines and tryptophan-derived dioxopiperazine/pyrrolidinoindoline dioxopiperazine analogs to complex polycyclic downstream metabolites containing transannular connections between the subunits, will be covered. These natural products are constructed by Nature using hybrid polyketide synthase (PKS) and nonribosomal peptide synthetase (NRPS) assembly lines. Mining of microbial genome sequences has more recently allowed the study of the metabolic routes and the discovery of their hidden biosynthetic potential. The competition (ideally, also the combined efforts) between their isolation from the cultures of the producing microorganisms after global genome mining and heterologous expression and the synthetic campaigns, has more recently allowed the successful generation and structural confirmation of these natural products. Their biological activities as well as their proposed biogenetic routes and computational studies on biogenesis will also be covered.
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Affiliation(s)
| | - Andrea Areal
- CINBIO and Universidade de Vigo, 36310 Vigo, Spain.
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Salman M, Tariq A, Mustafa G, Javed MR, Naheed S, Qamar SA. Cyclo(L-Leucyl-L-Prolyl) from Lactobacillus coryniformis BCH-4 inhibits the proliferation of Aspergillus flavus: an in vitro to in silico approach. Arch Microbiol 2022; 204:267. [PMID: 35438350 DOI: 10.1007/s00203-022-02884-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/11/2022] [Accepted: 03/29/2022] [Indexed: 01/05/2023]
Abstract
Fungal spoilage led to a considerable economic loss of foodstuff which ultimately affects public health due to mycotoxins production. Moreover, the consumption of commercial antifungal drugs creates side effects and develops antifungal resistance. To overcome these challenges, the current work was aimed to investigate novel antifungal cyclic dipeptide (CDP) from Lactobacillus coryniformis (Loigolactobacillus coryniformis) BCH-4. CDPs have flexible, cyclic, and stable conformation. The proline-based CDPs provide additional structural compatibility and bio-functional values. Keeping in view, high-performance liquid chromatography (HPLC) was performed to explore cyclo(L-Leu-L-Pro) from L. coryniformis BCH-4. The HPLC detected concentration (135 ± 7.07 mg/mL) exhibited in vitro antifungal activity of 5.66 ± 0.57 mm (inhibitory zone) against Aspergillus flavus. Based on these results, cyclo(L-Leu-L-Pro) was used as a bioprotectant for selected food samples (grapes, lemon, cashew nuts, and almonds). A significant impact of cyclo(L-Leu-L-Pro) was observed in contrast with MRS broth (control) and cell-free supernatant. In silico molecular docking analysis of this CDP was carried out against FAD glucose dehydrogenase, dihydrofolate reductase, and urate oxidase of A. flavus as target proteins. Among these proteins, FAD glucose dehydrogenase exerted strong interactions with cyclo(L-Leu-L-Pro) having S-score of - 8.21. The results evaluated that the detected CDP has strong interactions with selected proteins, causing excellent growth inhibition of A. flavus. Therefore, cyclo(L-Leu-L-Pro) could be used as a potent bioprotectant against food-borne pathogenic fungi.
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Affiliation(s)
- Mahwish Salman
- Department of Biochemistry, Government College University, Faisalabad, Pakistan.
| | - Anam Tariq
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Ghulam Mustafa
- Department of Biochemistry, Government College University, Faisalabad, Pakistan
| | - Muhammad Rizwan Javed
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Shazia Naheed
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Sarmad Ahmad Qamar
- State Key Laboratory of Bioreactor Engineering and School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China.
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Phytochemical Profile and Anticancer Potential of Endophytic Microorganisms from Liverwort Species, Marchantia polymorpha L. Molecules 2021; 27:molecules27010153. [PMID: 35011384 PMCID: PMC8746834 DOI: 10.3390/molecules27010153] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/16/2021] [Accepted: 12/26/2021] [Indexed: 12/20/2022] Open
Abstract
Liverwort endophytes could be a source of new biologically active substances, especially when these spore-forming plants are known to produce compounds that are not found in other living organisms. Despite the significant development of plant endophytes research, there are only a few studies describing liverwort endophytic microorganisms and their metabolites. In the presented study, the analysis of the volatile compounds obtained from thallose liverwort species, Marchantia polymorpha L., and its endophytes was carried out. For this purpose, non-polar extracts of plant material and symbiotic microorganisms were obtained. The extracts were analyzed using gas chromatography coupled to mass spectrometry. Compounds with the structure of diketopiperazine in the endophyte extract were identified. Liverwort volatile extract was a rich source of cuparane-, chamigrane-, acorane-, and thujopsane-type sesquiterpenoids. The cytotoxicity of ethyl acetate extracts from endophytic microorganisms was evaluated on a panel of cancer (FaDu, HeLa, and SCC-25) cell lines and normal (VERO), and revealed significant anticancer potential towards hypopharyngeal squamous cell carcinoma and cervical adenocarcinoma.
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