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Dahibhate NL, Shukla SK, Kumar K. A Cyclic Disulfide Diastereomer From Bioactive Fraction of Bruguiera gymnorhiza Shows Anti- Pseudomonas aeruginosa Activity. Front Pharmacol 2022; 13:890790. [PMID: 35721160 PMCID: PMC9201687 DOI: 10.3389/fphar.2022.890790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 04/14/2022] [Indexed: 01/08/2023] Open
Abstract
Pseudomonas aeruginosa is an opportunistic pathogen that commonly causes hospital-acquired infection and is of great concern in immunocompromised patients. The quorum sensing (QS) mechanism of P. aeruginosa is well studied and known to be responsible for pathogenicity and virulence. The QS inhibitor derived from the natural product can be an important therapeutic agent for pathogen control. The present study reports the role of Bruguiera gymnorhiza purified fraction (BG138) in inhibiting virulence factor production, biofilm formation, quorum sensing molecules, and expression of QS-related genes of P. aeruginosa. Structural characterization of BG138 by high resolution mass spectrometry, Fourier transform infrared spectroscopy, 1D (1H and 13C NMR) and 2D NMR reveals that the fraction is a mixture of already known cyclic disulfide diastereomer, namely, brugierol and isobrugierol. The minimum inhibitory concentration (MIC) of BG138 against P. aeruginosa was 32 μg/ml. Biofilm formation was significantly reduced at sub-MIC concentrations of BG138. Scanning electron microscopy analysis reports the concentration-dependent biofilm inhibition and morphological changes of P. aeruginosa. Flow cytometry–based cell viability assay showed that P. aeruginosa cells exhibit increased propidium iodide uptake on treatment with 32 and 64 μg/ml of BG138. At sub-MIC concentrations, BG138 exhibited significant inhibition of virulence factors and reduced swimming and swarming motility of P. aeruginosa. Furthermore, the effect of BG138 on the expression of QS-related genes was investigated by qRT-PCR. Taken together, our study reports the isolation and structural characterization of bioactive fraction BG138 from B. gymnorhiza and its anti-biofilm, anti-virulence, anti-quorum sensing, and cell-damaging activities against P. aeruginosa.
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Affiliation(s)
- Nilesh Lakshman Dahibhate
- Department of Biological Sciences, Birla Institute of Technology & Science Pilani, K. K. Birla Goa Campus, Goa, India
| | - Sanjeev K Shukla
- Sophisticated Analytical Instrument Facility, CSIR-Central Drug Research Institute, Lucknow, India
| | - Kundan Kumar
- Department of Biological Sciences, Birla Institute of Technology & Science Pilani, K. K. Birla Goa Campus, Goa, India
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Dahibhate NL, Kumar K. Metabolite profiling of Bruguiera cylindrica reveals presence of potential bioactive compounds. PEERJ ANALYTICAL CHEMISTRY 2022. [DOI: 10.7717/peerj-achem.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Bruguiera cylindrica parts are commonly used in Chinese and Indian traditional medicine to treat diarrhea, fever, and many ailments. The present study aims non targeted analysis of key secondary metabolites of B. cylindrica by gas chromatography mass spectrometry (GC-MS) and ultra-high performance liquid chromatography hybrid quadrupole-Exactive-Orbitrap high resolution mass spectrometry (UHPLC-Q-Exactive Orbitrap HRMS). GC-MS and UHPLC-Q-Exactive Orbitrap HRMS were utilized for metabolic profiling of ethyl acetate extract of B. cylindrica leaves. Key metabolites in the extract were identified and predicted based on chemical similarity using online databases such as ChemSpider and mzCloud. Thirty-six compounds belonging to different classes of secondary metabolites viz. flavonoids, fatty acids, fatty acid amides, carboxylic acids, and alkaloids were identified in the extract. Pentacyclic triterpenes like betulin, ursolic acid and a tropine, an alkaloid with potential pharmacological and therapeutic activities such as anticancer properties, neuromuscular blockers and antioxidants, were also identified. This study combined GC-MS and UHPLC-Q-Exactive Orbitrap HRMS with available online database for effective and rapid identification of bioactive metabolites in the ethyl acetate extract of mangrove without individual standard application. This is the first report on the HRMS based secondary metabolic profiling of B. cylindrica, with comprehensive map of its biologically important metabolites.
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Ahmad A, Faizi S, Siddiqui PJA, Fayyaz S, Khan K, Iqbal EY, Rasheed M, Muzafar W. Bioassay Directed Fractionation of Petroleum Ether Extract of Aerial Parts of Ceriops tagal: Isolation of Lupeol as the Nematicidal Agent against Cyst Nematode Heterodera zeae. Chem Biodivers 2022; 19:e202100759. [PMID: 35001512 DOI: 10.1002/cbdv.202100759] [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: 09/17/2021] [Accepted: 01/07/2022] [Indexed: 11/08/2022]
Abstract
Plant parasitic cyst nematode Heterodera zeae is a pest, causing substantial economic losses in agriculture. Organic pesticides, based on plant products have emerged as eco-benign nematicidal agents. Ceriops tagal is a well-known marine medicinal plant which has not been evaluated against any nematode. Petroleum ether extract of the aerial parts of the plant (CTP), exhibited promising activity against infective stage larvae of H. zeae . On subjecting to classical solvent-solvent separation, it afforded petroleum ether soluble (CTP-S), methanol soluble ( CTPMS-1 , CTPMS-2) and insoluble (CTPM-IN-2) fractions, which exhibited activity against the cyst nematode within 24 h exposure. GC, GCMS and ESI-HRMS analyses of CTPMS-1 and CTPMS-2 fractions resulted in the identification of a number of compounds, including pentacyclic triterpenoids, lupeol ( 1 ), betunal ( 2 ), betulin ( 3 ), lupenone ( 4 ), betulonaldehyde ( 5 ), betulonic acid ( 7 ), methyl-3-acetoxy-27- O -(3,4-dihydroxy- E -cinnamoyl)-20(29)-lupen-28-oate ( 8 ) and β -amyrin, along with phenylpropanoid esters, fatty acids and their derivatives, benzamide, and indole derivatives. CTPM-IN-2 which mainly contained lupeol ( 1 ) exhibited maximum nematicidal activity, with 91% and 93% mortality of the larvae of H. zeae , after exposure for 72 h at the concentration of 0.5% and 1%, respectively. Its fractionation and purification through column chromatography resulted in the isolation and identification of four lupane-type triterpenoids 1 , 3 , 4 and betulinic acid ( 6 ). One of its most abundant column fractions CC-9-18 (145 mg) which exhibited substantial activity, with 81% mortality at the lowest concentration of 0.125% after 48 h of incubation mainly contained lupeol. It seems lupeol, a wide spread bio-privileged triterpenoid is the nematicidal principle of the plant as its authentic sample showed LC 50 value of 0.061 after 72 h exposure. It is for the first time that nematicidal activity is reported for any part of C. tagal and that of lupeol against H. zeae. Pentacyclic triterpenoids 1 - 8 are biosynthetically related. Of the twenty-four compounds isolated or identified in the present investigation only five constituents 1 , 3 , 6 , 7 and palmitic acid have been isolated previously from C. tagal .
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Affiliation(s)
- Ateeq Ahmad
- University of Karachi, Centre of Excellence in Marine Biology, Center of Excellence in Marine Biology, University of Karachi, 75270, Karachi, PAKISTAN
| | - Shaheen Faizi
- University of Karachi, HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences, HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270, Karachi, PAKISTAN
| | - Pirzada J A Siddiqui
- Bahria University, National Institute of Maritime Affairs, National Institute of Maritime Affairs, Bahria University, 13 National Stadium Road, 75260, Karachi, PAKISTAN
| | - Shahina Fayyaz
- University of Karachi, National Nematological Research Centre, National Nematological Research Centre (NNRC), University of Karachi, Karachi, PAKISTAN
| | - Kehkashan Khan
- Federal Urdu University of Arts, Sciences and Technology, Department of Chemistry, Department of Chemistry, Federal Urdu University of Arts, Science & Technology, Science Campus, Gulshan-e-Iqbal, 75300, Karachi, PAKISTAN
| | - Erum Y Iqbal
- University of Karachi, National Nematological Research Centre, National Nematological Research Centre (NNRC), University of Karachi, 75270, Karachi, PAKISTAN
| | - Munawwer Rasheed
- University of Karachi, Center of Excellence in Marine Biology, Center of Excellence in Marine Biology, University of Karachi, 75270, Karachi, PAKISTAN
| | - Wajeeha Muzafar
- University of Karachi, H.E.J. Research Institute of Chemistry, International Center of Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270, Karachi, PAKISTAN
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Zhang Y, Cai P, Cheng G, Zhang Y. A Brief Review of Phenolic Compounds Identified from Plants: Their Extraction, Analysis, and Biological Activity. Nat Prod Commun 2022. [DOI: 10.1177/1934578x211069721] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Phenolic compounds are the most abundant secondary metabolites in plants, showing a wide range of distinct biological activities, have received more and more attention in recent years. This review aims to gather and systematize available information on the phenolic compounds from plants by discussing different types of phenolic compounds, extraction, and analysis methods, with an emphasis on their potential biological activities. The research direction and problems that should be paid attention to in the future are also put forward to provide some references for the further study of phenolic compounds.
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Affiliation(s)
- Yuanyuan Zhang
- College of Plant Protection, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University, Chongqing, China
| | - Ping Cai
- College of Plant Protection, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University, Chongqing, China
| | - Guanghui Cheng
- Chongqing Agricultural Products Quality & Safety Center, Chongqing, China
| | - Yongqiang Zhang
- College of Plant Protection, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University, Chongqing, China
- National Citrus Engineering Research Center, Chongqing, China
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Southwest University, Chongqing, China
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Yan B, Chen ZS, Hu Y, Yong Q. Insight in the Recent Application of Polyphenols From Biomass. Front Bioeng Biotechnol 2021; 9:753898. [PMID: 34589477 PMCID: PMC8473751 DOI: 10.3389/fbioe.2021.753898] [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: 08/05/2021] [Accepted: 08/31/2021] [Indexed: 12/16/2022] Open
Abstract
Biomass polyphenols are bio-active macromolecules with distinct chemical structures in a variety of biomass. In recent years, the study of biomass polyphenols and their application in food and medicine fields has become a research hotspot, which predominantly focuses on the preparation, purification, structural identifications, and measurements of biological activities. Many studies describe methodologies for extraction and application of polyphenols, but comprehensive work to review its physiological activities like drugs and health products are lacking. This paper comprehensively unlocks the bioactivities of antioxidant, antibacterial, antitumor, anticancer, neuroprotection, control of blood sugar, regulation of blood fat, and promotion of gastrointestinal health functions of polyphenols from different biomass sources. This review will serve as an illuminating resource for the global scientific community, especially for those who are actively working to promote the advances of the polyphenols research field.
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Affiliation(s)
- Bowen Yan
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products, College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Zhefan Stephen Chen
- Nexus of Rare Neurodegenerative Diseases, School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong, SAR China
| | - Yingying Hu
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products, College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Qiang Yong
- Co-Innovation Center for Efficient Processing and Utilization of Forest Products, College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
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