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Bal P, Sinam G, Yahavi C, Singh SP, Jena S, Pant AB, Barik SK. A UPLC-MS/MS method for quantification of β-N-methylamino-L-alanine (BMAA) in Cycas sphaerica roxb. and its use in validating efficacy of a traditional BMAA removal method. Toxicon 2024; 238:107566. [PMID: 38151204 DOI: 10.1016/j.toxicon.2023.107566] [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: 09/18/2023] [Revised: 12/11/2023] [Accepted: 12/11/2023] [Indexed: 12/29/2023]
Abstract
The presence of neurotoxin β-N-Methylamino-L-alanine (BMAA) in the seeds of Cycas sphaerica is reported for first time. We developed a UPLC-MS/MS method for BMAA quantification by derivatizing with dansyl chloride. The method successfully differentiated L-BMAA from its structural isomer 2,4-diaminobutyric acid (DAB). The extracting mixture 0.1M TCA: ACN 4:1 v/v had a recovery level of >95%. The method is a high throughput sensitive chromatographic technique with 16.42 ng g-1 Limit of Quantification. BMAA was present in the endosperm of C. sphaerica, and was not detected in the leaves and pith. Washing of seeds in running cold water for 48 h reduced BMAA content by 86%. The local communities also treat the seeds under running cold water, but only for 24 h. The results of the study thus validated the traditional BMAA removal process through cold water treatment, but recommend for increase in the treatment period to 48 h or more.
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Affiliation(s)
- Pankajini Bal
- Plant Genetic Resources & Improvement Division, CSIR-National Botanical Research Institute, Lucknow, India
| | - Geetgovind Sinam
- Plant Ecology & Climate Change Science Division, CSIR-National Botanical Research Institute, Lucknow, India.
| | | | | | - Satyanarayan Jena
- Plant Genetic Resources & Improvement Division, CSIR-National Botanical Research Institute, Lucknow, India
| | - Aditya Bhushan Pant
- Systems Toxicology & Health Risk Assessment, CSIR-Indian Institute of Toxicology Research, Lucknow, India
| | - Saroj Kanta Barik
- Department of Botany, North-Eastern Hill University, Shillong, India.
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Dzhuzha AY, Tarasenko II, Atanase LI, Lavrentieva A, Korzhikova-Vlakh EG. Amphiphilic Polypeptides Obtained by the Post-Polymerization Modification of Poly(Glutamic Acid) and Their Evaluation as Delivery Systems for Hydrophobic Drugs. Int J Mol Sci 2023; 24:ijms24021049. [PMID: 36674566 PMCID: PMC9864831 DOI: 10.3390/ijms24021049] [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: 10/31/2022] [Revised: 12/12/2022] [Accepted: 01/03/2023] [Indexed: 01/06/2023] Open
Abstract
Synthetic poly(amino acids) are a unique class of macromolecules imitating natural polypeptides and are widely considered as carriers for drug and gene delivery. In this work, we synthesized, characterized and studied the properties of amphiphilic copolymers obtained by the post-polymerization modification of poly(α,L-glutamic acid) with various hydrophobic and basic L-amino acids and D-glucosamine. The resulting glycopolypeptides were capable of forming nanoparticles that exhibited reduced macrophage uptake and were non-toxic to human lung epithelial cells (BEAS-2B). Moreover, the developed nanoparticles were suitable for loading hydrophobic cargo. In particular, paclitaxel nanoformulations had a size of 170-330 nm and demonstrated a high cytostatic efficacy against human lung adenocarcinoma (A549). In general, the obtained nanoparticles were comparable in terms of their characteristics and properties to those based on amphiphilic (glyco)polypeptides obtained by copolymerization methods.
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Affiliation(s)
- Apollinariia Yu. Dzhuzha
- Institute of Chemistry, Saint-Petersburg State University, 198504 St. Petersburg, Russia
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia
| | - Irina I. Tarasenko
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia
| | | | - Antonina Lavrentieva
- Institute of Technical Chemistry, Gottfried-Wilhelm-Leibniz University, 30167 Hannover, Germany
| | - Evgenia G. Korzhikova-Vlakh
- Institute of Macromolecular Compounds, Russian Academy of Sciences, 199004 St. Petersburg, Russia
- Correspondence:
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3
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Giri S, Oña L, Waschina S, Shitut S, Yousif G, Kaleta C, Kost C. Metabolic dissimilarity determines the establishment of cross-feeding interactions in bacteria. Curr Biol 2021; 31:5547-5557.e6. [PMID: 34731676 DOI: 10.1016/j.cub.2021.10.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 09/01/2021] [Accepted: 10/08/2021] [Indexed: 12/19/2022]
Abstract
The exchange of metabolites among different bacterial genotypes profoundly impacts the structure and function of microbial communities. However, the factors governing the establishment of these cross-feeding interactions remain poorly understood. While shared physiological features may facilitate interactions among more closely related individuals, a lower relatedness should reduce competition and thus increase the potential for synergistic interactions. Here, we investigate how the relationship between a metabolite donor and recipient affects the propensity of strains to engage in unidirectional cross-feeding interactions. For this, we performed pairwise cocultivation experiments between four auxotrophic recipients and 25 species of potential amino acid donors. Auxotrophic recipients grew in the vast majority of pairs tested (63%), suggesting metabolic cross-feeding interactions are readily established. Strikingly, both the phylogenetic distance between donor and recipient and the dissimilarity of their metabolic networks were positively associated with the growth of auxotrophic recipients. Analyzing the co-growth of species from a gut microbial community in silico also revealed that recipient genotypes benefitted more from interacting with metabolically dissimilar partners, thus corroborating the empirical results. Together, our work identifies the metabolic dissimilarity between bacterial genotypes as a key factor determining the establishment of metabolic cross-feeding interactions in microbial communities.
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Affiliation(s)
- Samir Giri
- Experimental Ecology and Evolution Research Group, Department of Bioorganic Chemistry, Max Planck Institute for Chemical Ecology, 07745 Jena, Germany; Department of Ecology, School of Biology/Chemistry, University of Osnabrück, 49076 Osnabrück, Germany.
| | - Leonardo Oña
- Department of Ecology, School of Biology/Chemistry, University of Osnabrück, 49076 Osnabrück, Germany
| | - Silvio Waschina
- Institute for Human Nutrition and Food Science, Nutriinformatics, Christian-Albrechts-University Kiel, 24105 Kiel, Germany; Research Group Medical Systems Biology, Institute for Experimental Medicine, Christian-Albrechts-University Kiel, 24105 Kiel, Germany
| | - Shraddha Shitut
- Experimental Ecology and Evolution Research Group, Department of Bioorganic Chemistry, Max Planck Institute for Chemical Ecology, 07745 Jena, Germany; Department of Ecology, School of Biology/Chemistry, University of Osnabrück, 49076 Osnabrück, Germany
| | - Ghada Yousif
- Experimental Ecology and Evolution Research Group, Department of Bioorganic Chemistry, Max Planck Institute for Chemical Ecology, 07745 Jena, Germany; Department of Ecology, School of Biology/Chemistry, University of Osnabrück, 49076 Osnabrück, Germany; Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Christoph Kaleta
- Research Group Medical Systems Biology, Institute for Experimental Medicine, Christian-Albrechts-University Kiel, 24105 Kiel, Germany
| | - Christian Kost
- Experimental Ecology and Evolution Research Group, Department of Bioorganic Chemistry, Max Planck Institute for Chemical Ecology, 07745 Jena, Germany; Department of Ecology, School of Biology/Chemistry, University of Osnabrück, 49076 Osnabrück, Germany.
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Soyseven M, Arli G. Method Validation and Rapid Determination of Monosodium Glutamate in Various Food Products by HPLC-Fluorescence Detection and Method Optimization of HPLC-Evaporative Light Scattering Detection Approach without Derivatization. J Chromatogr Sci 2021; 60:760-769. [PMID: 34599321 DOI: 10.1093/chromsci/bmab122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Indexed: 11/14/2022]
Abstract
In this study, an effective, simple and rapid high-performance liquid chromatography (HPLC) using fluorescence (FLD) method was developed and validated for the determination of monosodium glutamate (MSG) in 57 various food samples. Besides, HPLC-Evaporate Light Scattering Detection (ELSD) method was carried out for determination of MSG without derivatization. MSG analysis was performed by derivatization with dansyl chloride at excitation 328, emission 530nm with fluorescence detector. HPLC-FLD method was carried out by using C18 (150 mm, 4.6 mm, 2.7 μm) column with the mobile phase consisting of (Water: Methanol:Glacial Acetic Acid)/(54:45:1,v/v/v). The column temperature was set at 25°C and the flow rate was set at 0.5 mL min-1 with an injection volume 20 μL. The results were linear (R2 = 0.9999) with very low quantification limits. The applied method was optimized and the validated parameters such as LOD, LOQ, accuracy, precision, linearity and robustness were calculated. The obtained results were statistically compared with each other. The validated HPLC-FLD method was successfully applied for the analysis of MSG in all of the food samples. Moreover, HPLC-ELSD method was optimized and successfully demonstrated for detect the MSG without derivatization.
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Affiliation(s)
- Murat Soyseven
- Department of Medical Services and Techniques, Yunus Emre Vocational School of Health Services, Anadolu University, 26470 Eskişehir, Turkey
| | - Göksel Arli
- Department of Medical Services and Techniques, Yunus Emre Vocational School of Health Services, Anadolu University, 26470 Eskişehir, Turkey.,Department of Analytical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey
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Validation of a Simple HPLC-Based Method for Lysine Quantification for Ruminant Nutrition. Molecules 2021; 26:molecules26144173. [PMID: 34299448 PMCID: PMC8304843 DOI: 10.3390/molecules26144173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 11/17/2022] Open
Abstract
Robust and selective quantification methods are required to better analyze feed supplementation effectiveness with specific amino acids. In this work, a reversed-phase high-performance liquid chromatography method with fluorescence detection is proposed and validated for lysine quantification, one of the most limiting amino acids in ruminant nutrition and essential towards milk production. To assess and widen method applicability, different matrices were considered: namely Li2CO3 buffer (the chosen standard reaction buffer), phosphate buffer solution (to mimic media in cellular studies), and rumen inoculum. The method was validated for all three matrices and found to be selective, accurate (92% ± 2%), and precise at both the inter- and intra-day levels in concentrations up to 225 µM, with detection and quantification limits lower than 1.24 and 4.14 µM, respectively. Sample stability was evaluated when stored at room temperature, 4 °C, and -20 °C, showing consistency for up to 48 h regardless of the matrix. Finally, the developed method was applied in the quantification of lysine on real samples. The results presented indicate that the proposed method can be applied towards free lysine quantification in ruminant feeding studies and potentially be of great benefit to dairy cow nutrition supplementation and optimization.
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The Influence of Oxidative Stress on Serum Albumin Structure as a Carrier of Selected Diazaphenothiazine with Potential Anticancer Activity. Pharmaceuticals (Basel) 2021; 14:ph14030285. [PMID: 33806875 PMCID: PMC8005128 DOI: 10.3390/ph14030285] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/05/2021] [Accepted: 03/18/2021] [Indexed: 12/20/2022] Open
Abstract
Albumin is one of the most important proteins in human blood. Among its multiple functions, drug binding is crucial in terms of drug distribution in human body. This protein undergoes many modifications that are certain to influence protein activity and affect its structure. One such reaction is albumin oxidation. Chloramine T is a strong oxidant. Solutions of human serum albumin, both non-modified and modified by chloramine T, were examined with the use of fluorescence, absorption and circular dichroism (CD) spectroscopy. 10H-3,6-diazaphenothiazine (DAPT) has anticancer activity and it has been studied for the first time in terms of binding with human serum albumin—its potential as a transporting protein. Using fluorescence spectroscopy, in the presence of dansylated amino acids, dansyl-l-glutamine (dGlu), dansyl-l-proline (dPro), DAPT binding with two main albumin sites—in subdomain IIA and IIIA—has been evaluated. Based on the conducted data, in order to measure the stability of DAPT complexes with human (HSA) and oxidized (oHSA) serum albumin, association constant (Ka) for ligand-HSA and ligand-oHSA complexes were calculated. It has been presumed that oxidation is not an important issue in terms of 10H-3,6-diazaphenothiazine binding to albumin. It means that the distribution of this substance is similar regardless of changes in albumin structure caused by oxidation, natural occurring in the organism.
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Sánchez-Bodón J, Ruiz-Rubio L, Hernáez-Laviña E, Vilas-Vilela JL, Moreno-Benítez MI. Poly(l-lactide)-Based Anti-Inflammatory Responsive Surfaces for Surgical Implants. Polymers (Basel) 2020; 13:polym13010034. [PMID: 33374150 PMCID: PMC7794694 DOI: 10.3390/polym13010034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/17/2020] [Accepted: 12/22/2020] [Indexed: 12/23/2022] Open
Abstract
In the last few decades, surgical implants have been widely used to restore the function of damaged bones or joints. However, it is essential to receive antibiotic or anti-inflammatory treatment to circumvent significant problems associated, such as the colonization of the implanted surface by bacteria or other microorganisms and strong host inflammatory responses. This article presents the effectiveness of the copper catalyzed alkyne-azide cycloaddition (CuAAC) (“click”) reaction by the linkage of a fluorophore to the poly(L-lactide) (PLLA) surface. The results were analysed by means of X-ray photoelectron spectroscopy (XPS), contact angle and fluorescence microscopy. Moreover, this current work describes the covalent immobilization of the anti-inflammatory drug indomethacin on a PLLA surface. The CuAAC click reaction was selected to anchor the drug to the polymeric films. The successful bioconjugation of the drug was confirmed by XPS and the change on the contact angle.
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Affiliation(s)
- Julia Sánchez-Bodón
- Macromolecular Chemistry Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain; (L.R.-R.); (E.H.-L.); (J.L.V.-V.)
- Correspondence: (J.S.-B.); (M.I.M.-B.); Tel.: +34-61-9083-458 (J.S.-B.); +34-94-6015-983 (M.I.M.-B.)
| | - Leire Ruiz-Rubio
- Macromolecular Chemistry Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain; (L.R.-R.); (E.H.-L.); (J.L.V.-V.)
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Estíbaliz Hernáez-Laviña
- Macromolecular Chemistry Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain; (L.R.-R.); (E.H.-L.); (J.L.V.-V.)
| | - José Luis Vilas-Vilela
- Macromolecular Chemistry Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain; (L.R.-R.); (E.H.-L.); (J.L.V.-V.)
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Mª Isabel Moreno-Benítez
- Macromolecular Chemistry Group (LABQUIMAC), Department of Organic and Inorganic Chemistry, Faculty of Science and Technology, University of the Basque Country, UPV/EHU, Barrio Sarriena s/n, 48940 Leioa, Spain
- Correspondence: (J.S.-B.); (M.I.M.-B.); Tel.: +34-61-9083-458 (J.S.-B.); +34-94-6015-983 (M.I.M.-B.)
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Bayer M, Savelsbergh A, Klinger C, Kaufmann M, König S. Derivatization of the amino acids glycine and valine causes peptide formation-relevance for the analysis of prebiotic oligomerization. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8912. [PMID: 32749724 DOI: 10.1002/rcm.8912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/29/2020] [Accepted: 08/01/2020] [Indexed: 06/11/2023]
Affiliation(s)
- Malte Bayer
- IZKF Core Unit Proteomics, University of Münster, Münster, Germany
| | - Andreas Savelsbergh
- Chair of Biochemistry and Molecular Medicine, Division of Functional Genomics, ZBAF, Witten/Herdecke University, Germany
| | - Claudia Klinger
- Chair of Biochemistry and Molecular Medicine, Division of Functional Genomics, ZBAF, Witten/Herdecke University, Germany
| | - Michael Kaufmann
- Chair of Biochemistry and Molecular Medicine, Division of Functional Genomics, ZBAF, Witten/Herdecke University, Germany
| | - Simone König
- IZKF Core Unit Proteomics, University of Münster, Münster, Germany
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Bayer M, König S. A vote for robustness: Monitoring serum enzyme activity by thin-layer chromatography of dabsylated bradykinin products. J Pharm Biomed Anal 2017; 143:199-203. [DOI: 10.1016/j.jpba.2017.06.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 06/02/2017] [Accepted: 06/03/2017] [Indexed: 11/16/2022]
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Talanova GG, Talanov VS. Dansyl-containing fluorogenic calixarenes as optical chemosensors of hazardous metal ions: a mini-review. Supramol Chem 2010. [DOI: 10.1080/10610278.2010.514612] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Galina G. Talanova
- a Department of Chemistry , Howard University , 525 College Street, NW, Washington , DC , 20059 , USA
| | - Vladimir S. Talanov
- a Department of Chemistry , Howard University , 525 College Street, NW, Washington , DC , 20059 , USA
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Bew SP, Hiatt-Gipson GD. Synthesis of C-Propargylic Esters of N-Protected Amino Acids and Peptides. J Org Chem 2010; 75:3897-9. [DOI: 10.1021/jo100537q] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sean P. Bew
- School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
| | - Glyn D. Hiatt-Gipson
- School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
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