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Karpitskiy DA, Bessonova EA, Shishov AY, Kartsova LA. Selective extraction of plant bioactive compounds with deep eutectic solvents: Iris sibirica L. as example. PHYTOCHEMICAL ANALYSIS : PCA 2024; 35:53-63. [PMID: 37545032 DOI: 10.1002/pca.3272] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 06/21/2023] [Accepted: 07/19/2023] [Indexed: 08/08/2023]
Abstract
INTRODUCTION Deep eutectic solvents (DESs) are promising extractants with tuneable properties. However, there is a lack of reports about the influence of the nature of the original DES on obtaining the metabolomic profile of a plant. OBJECTIVE The aim of this study is to investigate the possibility of obtaining Iris sibirica L. chromatographical profiles with DESs based on various hydrogen bond donors and acceptors as extraction solvents. METHODOLOGY DESs were prepared by mixing choline chloride or tetrabutylammonium bromide with various hydrogen bond donors and investigated for the extraction of bioactive substances from biotechnological raw materials of I. sibirica L. The obtained extracts were analysed by HPLC with diode array detector (DAD) and Q-MS. RESULTS Chromatographic profiles for I. sibirica L. extracts by eight choline chloride DESs and six tetrabutylammonium DESs have been obtained. It has been found that selective recovery of bioactive substances can be achieved by varying the composition of DESs. Eleven phenolic compounds were identified in I. sibirica L. using HPLC-MS. Phase separation was observed with acetonitrile for four DESs. New flavonoid derivatives have been found in DES extracts compared with methanol extracts. CONCLUSION The results showed the possibility of DES usage for extraction without water addition. Selectivity of DESs varies depending on the chemical composition of hydrogen bond donors and acceptors. Choline chloride is a more suitable hydrogen bond acceptor for the flavonoid extraction. Choline chloride-lactic acid (1:1) DES has demonstrated a metabolic profile that was the closest to the methanol one and enhanced the extraction up to 2.6-fold.
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Affiliation(s)
- Dmitriy A Karpitskiy
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Elena A Bessonova
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Andrey Yu Shishov
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Liudmila A Kartsova
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
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Jiang L, Gao Y, Han L, Zhang W, Fan P. Designing plant flavonoids: harnessing transcriptional regulation and enzyme variation to enhance yield and diversity. FRONTIERS IN PLANT SCIENCE 2023; 14:1220062. [PMID: 37575923 PMCID: PMC10420081 DOI: 10.3389/fpls.2023.1220062] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 07/05/2023] [Indexed: 08/15/2023]
Abstract
Plant synthetic biology has emerged as a powerful and promising approach to enhance the production of value-added metabolites in plants. Flavonoids, a class of plant secondary metabolites, offer numerous health benefits and have attracted attention for their potential use in plant-based products. However, achieving high yields of specific flavonoids remains challenging due to the complex and diverse metabolic pathways involved in their biosynthesis. In recent years, synthetic biology approaches leveraging transcription factors and enzyme diversity have demonstrated promise in enhancing flavonoid yields and expanding their production repertoire. This review delves into the latest research progress in flavonoid metabolic engineering, encompassing the identification and manipulation of transcription factors and enzymes involved in flavonoid biosynthesis, as well as the deployment of synthetic biology tools for designing metabolic pathways. This review underscores the importance of employing carefully-selected transcription factors to boost plant flavonoid production and harnessing enzyme promiscuity to broaden flavonoid diversity or streamline the biosynthetic steps required for effective metabolic engineering. By harnessing the power of synthetic biology and a deeper understanding of flavonoid biosynthesis, future researchers can potentially transform the landscape of plant-based product development across the food and beverage, pharmaceutical, and cosmetic industries, ultimately benefiting consumers worldwide.
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Affiliation(s)
- Lina Jiang
- Department of Horticulture, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Yifei Gao
- Department of Horticulture, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Leiqin Han
- Department of Horticulture, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Wenxuan Zhang
- Department of Horticulture, Zijingang Campus, Zhejiang University, Hangzhou, China
| | - Pengxiang Fan
- Department of Horticulture, Zijingang Campus, Zhejiang University, Hangzhou, China
- Key Laboratory of Horticultural Plants Growth and Development, Agricultural Ministry of China, Hangzhou, China
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Taniguchi M, LaRocca CA, Bernat JD, Lindsey JS. Digital Database of Absorption Spectra of Diverse Flavonoids Enables Structural Comparisons and Quantitative Evaluations. JOURNAL OF NATURAL PRODUCTS 2023; 86:1087-1119. [PMID: 36848595 DOI: 10.1021/acs.jnatprod.2c00720] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Flavonoids play diverse roles in plants, comprise a non-negligible fraction of net primary photosynthetic production, and impart beneficial effects in human health from a plant-based diet. Absorption spectroscopy is an essential tool for quantitation of flavonoids isolated from complex plant extracts. The absorption spectra of flavonoids typically consist of two major bands, band I (300-380 nm) and band II (240-295 nm), where the former engenders a yellow color; in some flavonoids the absorption tails to 400-450 nm. The absorption spectra of 177 flavonoids and analogues of natural or synthetic origin have been assembled, including molar absorption coefficients (109 from the literature, 68 measured here). The spectral data are in digital form and can be viewed and accessed at http://www.photochemcad.com. The database enables comparison of the absorption spectral features of 12 distinct types of flavonoids including flavan-3-ols (e.g., catechin, epigallocatechin), flavanones (e.g., hesperidin, naringin), 3-hydroxyflavanones (e.g., taxifolin, silybin), isoflavones (e.g., daidzein, genistein), flavones (e.g., diosmin, luteolin), and flavonols (e.g., fisetin, myricetin). The structural features that give rise to shifts in wavelength and intensity are delineated. The availability of digital absorption spectra for diverse flavonoids facilitates analysis and quantitation of these valuable plant secondary metabolites. Four examples are provided of calculations─multicomponent analysis, solar ultraviolet photoprotection, sun protection factor (SPF), and Förster resonance energy transfer (FRET)─for which the spectra and accompanying molar absorption coefficients are sine qua non.
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Affiliation(s)
- Masahiko Taniguchi
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Connor A LaRocca
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Jake D Bernat
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Jonathan S Lindsey
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
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Karpitskiy DA, Bessonova EA, Kartsova LA, Tikhomirova LI. Development of approach for flavonoid profiling of biotechnological raw materials Iris sibirica L. by HPLC with high-resolution tandem mass spectrometry. PHYTOCHEMICAL ANALYSIS : PCA 2022; 33:869-878. [PMID: 35680077 DOI: 10.1002/pca.3135] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 05/04/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
INTRODUCTION Iris L. are promising in medicine due to the biological activity of extracts. Iris sibirica L. is spread in Russia but its phytochemical composition has not been studied in detail though it is included in the Red Book. For this reason, I. sibirica L. biotechnology is in high demand. One of the key points in biotechnology is the regulation of plant metabolism using phytohormones. Obtaining of chromatographic metabolite profiles allows to control this process. OBJECTIVE The aim of this study was to develop an approach for effective control of biotechnological raw materials of I. sibirica L. by flavonoid profiles using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) and to investigate the influence of phytohormones in nutrient media on content of flavonoids. METHODOLOGY Iris sibirica L. regenerated plants were grown on Murashige-Skoog media with 6-benzylaminopurine (6-BAP) and α-naphtylacetic acid (NAA) additives. To optimise extraction conditions, the design of the experiment was used. Profiles of polyphenols were obtained by HPLC-MS/MS in the positive and negative ionisation modes. RESULTS The process for efficient extraction from leaves of I. sibirica L. were developed. The factors influencing the extraction efficiency of flavonoids have been determined. A total of 36 compounds were identified by HPLC-MS/MS. Among them isoflavones and their glycosides are the main classes. Addition of an auxin-like hormone increased the non-polar flavonoid levels, but decreased the polar ones. The variation in concentration of cytokinin (6-BAP) affected almost all of the analytes. CONCLUSION The methodology for effective control of I. sibirica L. raw plant material biotechnology was developed by analysing obtained chromatographic polyphenol profiles.
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Affiliation(s)
- Dmitriy A Karpitskiy
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Elena A Bessonova
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Liudmila A Kartsova
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Liudmila I Tikhomirova
- Saint Petersburg Scientific Research Institute of Vaccines and Serums and the Enterprise for the Production of Bacterial Preparations, Saint Petersburg, Russia
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Antioxidant and Anticancer Potential of Bioactive Compounds from Rhinacanthus nasutus Cell Suspension Culture. PLANTS 2022; 11:plants11151994. [PMID: 35956472 PMCID: PMC9370634 DOI: 10.3390/plants11151994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 07/22/2022] [Accepted: 07/26/2022] [Indexed: 12/02/2022]
Abstract
The potential benefits of natural plant extracts have received attention in recent years, encouraging the development of natural products that effectively treat various diseases. This is the first report on establishing callus and cell suspension cultures of Rhinacanthus nasutus (L.) Kurz. A yellow friable callus was successfully induced from in vitro leaf explants on Murashige and Skoog medium supplemented with 1 mg/L 2,4-dichlorophenoxyacetic acid and 1 mg/L 1-naphthalene acetic acid. A selected friable callus line was used to establish the cell suspension culture with the same medium. The antioxidant assays showed that the leaf- and ethanolic-suspension-cultured cell (SCC) extracts exhibited high antioxidant potential. In addition, the in vitro cytotoxicity revealed by the MTT assay demonstrated potent antiproliferative effects against the oral cancer cell lines ORL-48 and ORL-136 in a dose-dependent manner. Several groups of compounds, including terpenoids, phenolics, flavonoids, quinones, and stilbenes, were identified by UHPLC–QToF–MS, with the same compounds detected in leaf and SCC extracts, including austroinulin, lucidenic acid, esculetin, embelin, and quercetin 3-(2″-p-hydroxybenzoyl-4″-p-coumarylrhamnoside). The present study suggests the value of further investigations for phytochemical production using R. nasutus cell suspension culture.
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Zhong J, Ren D, Shang Y, Huang S, Li Y, Hu Y, Yi L. Targeted identification of glycosylated flavones and isomers in green tea through integrated ion-filtering strategy and mass-fragmentation characteristics based on the UPLC-Q-Orbitrap-MS/MS platform. Food Chem 2022; 377:131901. [PMID: 34999455 DOI: 10.1016/j.foodchem.2021.131901] [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: 05/07/2021] [Revised: 12/15/2021] [Accepted: 12/16/2021] [Indexed: 11/17/2022]
Abstract
Glycosylated flavones (GFs) are important components of green tea and have various structures and isomers. The annotation of GFs' chemical structures is challenging. Ultrahigh-performance liquid chromatography-high resolution mass spectrometry can provide informative mass ions for GF annotation. However, distinguishing the mass features of GFs from those of thousands of ions is difficult. In this study, integrated ion-filtering strategies for O- and C-glycosyl flavones were constructed, and the mass-fragmentation characteristics were summarized from GF standards. Ultimately, 29 GFs with different types of aglycones and glycosides, connection modes, and locations were annotated. According to principal component analysis and t-test results, significant differences were observed in the contents of 16 components in the two kinds of tea. Among them, the contents of 11 GFs in autumn teas were significantly higher than those in spring teas. This study provided an efficient strategy for isomer annotation in food analysis.
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Affiliation(s)
- Jiayi Zhong
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China
| | - Dabing Ren
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China; Yunnan Food Safety Research Institute, Kunming University of Science and Technology, Kunming 650500, China
| | - Ying Shang
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China; Yunnan Food Safety Research Institute, Kunming University of Science and Technology, Kunming 650500, China
| | - Sichen Huang
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China
| | - Yan Li
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China
| | - Yongdan Hu
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China; Yunnan Food Safety Research Institute, Kunming University of Science and Technology, Kunming 650500, China.
| | - Lunzhao Yi
- Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China; Yunnan Food Safety Research Institute, Kunming University of Science and Technology, Kunming 650500, China.
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Мykhailenko O, Chetvernya S, Bezruk I, Buydin Y, Dhurenko N, Рalamarchuk O, Ivanauskas L, Georgiyants V. Bioactive Constituents of Iris hybrida (Iridaceae): processing effect. Biomed Chromatogr 2022; 36:e5369. [PMID: 35285530 DOI: 10.1002/bmc.5369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/03/2022] [Accepted: 03/09/2022] [Indexed: 11/06/2022]
Abstract
Iris genus plants are a valuable source of bioactive compounds, which are an important component for pharmaceutical development. The present article shows the potential of mineral nutrition with applied of magnesium sulfate, iron chelates, and potassium oxide on affecting the phenolic compounds content in Iris hybrida 'Tsikavynka', I. hybrida 'Tambo', and I. hybridа 'Widecombe Fire'. The effect of mineral processing was specific to plant organs and varied in the components composition. The Irises rhizomes had an increased total phenolic compounds content after treatment (up to 10% of the total isoflavonoids content, up to 8% of phenolic acids; up to 5% of γ-pyrones; up to 13% of flavonoids) by UV-Vis spectroscopy method. A positive effect of nutrition on the biosynthesis and content of individual isoflavonoids (tectoridin, nigricin D-glucoside, genistin, iristectorigenin B, nigricin, irigenin, irisolidone) and xanthone mangiferin in Irises rhizomes by HPLC has been established. In addition, an increase of chlorogenic acid amount in Irises leaves was noted. The results demonstrate the sensitivity of Iris phenylpropanoid metabolism to mineral nutrition and can be used for predicted medical plant cultivation with increased content of bioactive constituents.
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Affiliation(s)
- Olha Мykhailenko
- Department of Pharmaceutical Chemistry, National University of Pharmacy of the Ministry of Health of Ukraine, Kharkiv, Ukraine
| | - Sergiy Chetvernya
- M.M. Hryshko National Botanical Garden of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Ivan Bezruk
- Department of Pharmaceutical Chemistry, National University of Pharmacy of the Ministry of Health of Ukraine, Kharkiv, Ukraine
| | - Yrii Buydin
- M.M. Hryshko National Botanical Garden of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Nadija Dhurenko
- M.M. Hryshko National Botanical Garden of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Olena Рalamarchuk
- M.M. Hryshko National Botanical Garden of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Liudas Ivanauskas
- Department of Analytical and Toxicological Chemistry, Lithuanian University of Health Sciences, LT, Kaunas, Lithuania
| | - Victoriya Georgiyants
- Department of Pharmaceutical Chemistry, National University of Pharmacy of the Ministry of Health of Ukraine, Kharkiv, Ukraine
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McAtee PA, Nardozza S, Richardson A, Wohlers M, Schaffer RJ. A Data Driven Approach to Assess Complex Colour Profiles in Plant Tissues. FRONTIERS IN PLANT SCIENCE 2022; 12:808138. [PMID: 35154203 PMCID: PMC8826216 DOI: 10.3389/fpls.2021.808138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 12/15/2021] [Indexed: 06/14/2023]
Abstract
The ability to quantify the colour of fruit is extremely important for a number of applied fields including plant breeding, postharvest assessment, and consumer quality assessment. Fruit and other plant organs display highly complex colour patterning. This complexity makes it challenging to compare and contrast colours in an accurate and time efficient manner. Multiple methodologies exist that attempt to digitally quantify colour in complex images but these either require a priori knowledge to assign colours to a particular bin, or fit the colours present within segment of the colour space into a single colour value using a thresholding approach. A major drawback of these methodologies is that, through the process of averaging, they tend to synthetically generate values that may not exist within the context of the original image. As such, to date there are no published methodologies that assess colour patterning using a data driven approach. In this study we present a methodology to acquire and process digital images of biological samples that contain complex colour gradients. The CIE (Commission Internationale de l'Eclairage/International Commission on Illumination) ΔE2000 formula was used to determine the perceptually unique colours (PUC) within images of fruit containing complex colour gradients. This process, on average, resulted in a 98% reduction in colour values from the number of unique colours (UC) in the original image. This data driven procedure summarised the colour data values while maintaining a linear relationship with the normalised colour complexity contained in the total image. A weighted ΔE2000 distance metric was used to generate a distance matrix and facilitated clustering of summarised colour data. Clustering showed that our data driven methodology has the ability to group these complex images into their respective binomial families while maintaining the ability to detect subtle colour differences. This methodology was also able to differentiate closely related images. We provide a high quality set of complex biological images that span the visual spectrum that can be used in future colorimetric research to benchmark colourimetric method development.
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Affiliation(s)
- Peter Andrew McAtee
- The New Zealand Institute for Plant & Food Research (PFR), Auckland, New Zealand
| | - Simona Nardozza
- The New Zealand Institute for Plant & Food Research (PFR), Auckland, New Zealand
| | - Annette Richardson
- The New Zealand Institute for Plant & Food Research (PFR), Kerikeri, New Zealand
| | - Mark Wohlers
- The New Zealand Institute for Plant & Food Research (PFR), Auckland, New Zealand
| | - Robert James Schaffer
- The New Zealand Institute for Plant & Food Research (PFR), Motueka, New Zealand
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
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Okba MM, Abdel Baki PM, Abu-Elghait M, Shehabeldine AM, El-Sherei MM, Khaleel AE, Salem MA. UPLC-ESI-MS/MS profiling of the underground parts of common Iris species in relation to their anti-virulence activities against Staphylococcusaureus. JOURNAL OF ETHNOPHARMACOLOGY 2022; 282:114658. [PMID: 34555449 DOI: 10.1016/j.jep.2021.114658] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 09/03/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The use of plant extracts and their phytochemicals as candidates for targeting the microbial resistance inhibition is increasingly focused in last decades. In Mongolian traditional medicine, Irises were long used for the treatment of bacterial infections. Irises have been used since the Ancient Egyptians. AIM OF THE STUDY Chemical composition and virulence inhibition potential of both polar (PF) and non-polar fractions (NPF) of three common Iris species (I. confusa, I. pseudacorus and I. germanica) were explored. MATERIAL AND METHODS Secondary metabolites profiling was characterized by the UPLC-HRMS/MS technique. Multi-variate data analysis was performed using Metaboanalyst 3.0. Anti-virulence inhibitory activity was evaluated via anti-haemolytic assay and Quantitative biofilm inhibition assay. RESULTS I. pseudacorus PF exhibited the most potent effect against S. aureus haemolytic activity. All the tested fractions from all species, except I. pseudacorus NPF, have no significant inhibition on the biofilm formation of methicillin resistant and sensitive (MRSA and MSSA) S. aureus. I. pseudacorus NPF showed potent biofilm inhibitory potential of 71.4 and 85.8% against biofilm formation of MRSA and MSSA, respectively. Metabolite profiling of the investigated species revealed ninety and forty-five metabolites detected in the PFs and NPFs, respectively. Nigricin-type, tectorigenin-type isoflavonids and xanthones allowed the discrimination of I. pseudacorus PF from the other species, highlighting the importance of those metabolites in exerting its promising activity. On the other hand, triterpene acids, iridals, triacylglycerols and ceramides represented the metabolites detected in highest abundance in I. pseudacorus NPF. CONCLUSIONS This is the sole map represents the secondary metabolites profiling of the PFs and NPFs of common Iris species correlating them with the potent explored Staphylococcus aureus anti-virulence activity.
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Affiliation(s)
- Mona M Okba
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Passent M Abdel Baki
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Mohammed Abu-Elghait
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, 11884, Nasr City, Cairo, Egypt.
| | - Amr M Shehabeldine
- Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, 11884, Nasr City, Cairo, Egypt.
| | - Moshera M El-Sherei
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Amal E Khaleel
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Mohamed A Salem
- Department of Pharmacognosy, Faculty of Pharmacy, Menoufia University, Gamal Abd El Nasr st., Shibin Elkom, 32511, Menoufia, Egypt.
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Otgon O, Nadmid S, Paetz C, Dahse HM, Voigt K, Bartram S, Boland W, Dagvadorj E. Chromane Derivatives from Underground Parts of Iris tenuifolia and Their In Vitro Antimicrobial, Cytotoxicity and Antiproliferative Evaluation. Molecules 2021; 26:molecules26216705. [PMID: 34771113 PMCID: PMC8588511 DOI: 10.3390/molecules26216705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 10/31/2021] [Accepted: 11/02/2021] [Indexed: 11/18/2022] Open
Abstract
Phytochemical investigation of the ethanol extract of underground parts of Iris tenuifolia Pall. afforded five new compounds; an unusual macrolide termed moniristenulide (1), 5-methoxy-6,7-methylenedioxy-4-O-2′-cycloflavan (2), 5,7,2′,3′-tetrahydroxyflavanone (3), 5-hydroxy-6,7-dimethoxyisoflavone-2′-O-β-d-glucopyranoside (9), 5,2′,3′-dihydroxy-6,7-dimethoxyisoflavone (10), along with seven known compounds (4–8, 11–12). The structures of all purified compounds were established by analysis of 1D and 2D NMR spectroscopy and HR-ESI-MS. The antimicrobial activity of the compounds 1–3, 5, 9, and 10 was investigated using the agar diffusion method against fungi, Gram-positive and Gram-negative bacteria. In consequence, new compound 3 was found to possess the highest antibacterial activity against Enterococcus faecalis VRE and Mycobacterium vaccae. Cell proliferation and cytotoxicity tests were also applied on all isolated compounds and plant crude extract in vitro with the result of potent inhibitory effect against leukemia cells. In particular, the newly discovered isoflavone 10 was active against both of the leukemia cells K-562 and THP-1 while 4–6 of the flavanone type compounds were active against only THP-1.
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Affiliation(s)
- Oldokh Otgon
- Department of Chemistry, School of Biomedicine, Mongolian National University of Medical Sciences, S. Zorig Street 3, Ulaanbaatar 14210, Mongolia;
| | - Suvd Nadmid
- Department of Pharmaceutical Chemistry, School of Pharmacy, Mongolian National University of Medical Sciences, S. Zorig Street 3, Ulaanbaatar 14210, Mongolia;
| | - Christian Paetz
- Max Planck Institute for Chemical Ecology, Hans-Knoell-Strasse 8, D-07745 Jena, Germany; (C.P.); (S.B.); (W.B.)
| | - Hans-Martin Dahse
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute (HKI), Adolf-Reichwein-Strasse 23, D-07745 Jena, Germany; (H.-M.D.); (K.V.)
| | - Kerstin Voigt
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute (HKI), Adolf-Reichwein-Strasse 23, D-07745 Jena, Germany; (H.-M.D.); (K.V.)
| | - Stefan Bartram
- Max Planck Institute for Chemical Ecology, Hans-Knoell-Strasse 8, D-07745 Jena, Germany; (C.P.); (S.B.); (W.B.)
| | - Wilhelm Boland
- Max Planck Institute for Chemical Ecology, Hans-Knoell-Strasse 8, D-07745 Jena, Germany; (C.P.); (S.B.); (W.B.)
| | - Enkhmaa Dagvadorj
- Department of Chemistry, School of Biomedicine, Mongolian National University of Medical Sciences, S. Zorig Street 3, Ulaanbaatar 14210, Mongolia;
- Correspondence: ; Tel.: +976-99084787
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