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Nara S, Parasher G, Malhotra BD, Rawat M. Novel role of folate (vitamin B9) released by fermenting bacteria under Human Intestine like environment. Sci Rep 2023; 13:20226. [PMID: 37980374 PMCID: PMC10657476 DOI: 10.1038/s41598-023-47243-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 11/10/2023] [Indexed: 11/20/2023] Open
Abstract
The anaerobic region of the gastrointestinal (GI) tract has been replicated in the anaerobic chamber of a microbial fuel cell (MFC). Electroactive biomolecules released by the facultative anaerobes (Providencia rettgeri) under anoxic conditions have been studied for their potential role for redox balance. MALDI study reveals the presence of vitamin B9 (folate), 6-methylpterin, para-aminobenzoic acid (PABA) and pteroic acid called pterin pool. ATR-FTIR studies further confirm the presence of the aromatic ring and side chains of folate, 6-methylpterin and PABA groups. The photoluminescence spectra of the pool exhibit the maximum emission at 420, 425, 440, and 445 nm when excited by 310, 325, 350, and 365 nm wavelengths (day 20 sample) highlighting the presence of tunable bands. The cyclic voltammetric studies indicate the active participation of pterin pool molecules in the transfer of electrons with redox potentials at - 0.2 V and - 0.4 V for p-aminobenzoate and pterin groups, respectively. In addition, it is observed that under prolonged conditions of continuous oxidative stress (> 20 days), quinonoid tetrahydrofolate is formed, leading to temporary storage of charge. The results of the present study may potentially be useful in designing effective therapeutic strategies for the management of various GI diseases by promoting or blocking folate receptors.
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Affiliation(s)
- Sharda Nara
- Nanobioelectronics Laboratory, Department of Biotechnology, Delhi Technological University, Delhi, 110042, India
| | - Gulshan Parasher
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM, 87131, USA
| | - Bansi Dhar Malhotra
- Nanobioelectronics Laboratory, Department of Biotechnology, Delhi Technological University, Delhi, 110042, India.
- Environmental Sciences & Biomedical Metrology, CSIR-National Physical Laboratory, Dr K.S. Krishnan Road, New Delhi, 110012, India.
| | - Manmeet Rawat
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM, 87131, USA.
- Division of Gastroenterology and Hepatology, Department of Medicine, The Penn State University College of Medicine, Penn State University, 500 University Drive, Hershey, PA, 17033, USA.
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Chinnaiah K, Kannan K, Krishnamoorthy R, Gurushankar K. Datura metel L. leaf extract mediated sodium alginate polymer membrane for supercapacitor and food packaging applications. Int J Biol Macromol 2023; 242:125112. [PMID: 37257542 DOI: 10.1016/j.ijbiomac.2023.125112] [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: 03/17/2023] [Revised: 05/19/2023] [Accepted: 05/24/2023] [Indexed: 06/02/2023]
Abstract
Datura metel L. leaf extract mediated sodium alginate polymer membrane was successfully made using the solution casting technique. Electric, electrochemical, physicochemical and antimicrobial analyses of the prepared film were investigated. Functional groups of polysaccharides are identified in FTIR analysis and crystallinity/amorphous of the prepared samples was studied using XRD analysis. The prepared polymer membrane (DmMSA2) exhibits the ionic conductivity of 2.18 × 10-4 Scm-1, maximum specific capacitance of 131 F/g at a current density of 0.2 A/g and also exhibits a significant effect of antimicrobial activity against human pathogens. Hence, Datura metel L. leaf extract mediated polymer membranes are promising candidates for solid-electrolyte in supercapacitor devices and antimicrobial agents in food packaging applications.
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Affiliation(s)
- K Chinnaiah
- Multifunctional Laboratory, International Research Centre, Kalasalingam Academy of Research and Education, Krishnankoil, Virudhunagar 626 126, Tamil Nadu, India
| | - Karthik Kannan
- Institute of Agriculture Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai 602 105, Tamil Nadu, India
| | - Raman Krishnamoorthy
- Department of Biology, Gandhigram Rural Institute (Deemed to be university), Gandhigram, Dindigul 624 302, Tamil Nadu, India
| | - K Gurushankar
- Multifunctional Laboratory, International Research Centre, Kalasalingam Academy of Research and Education, Krishnankoil, Virudhunagar 626 126, Tamil Nadu, India; Laboratory of Computational Modelling Drugs, Higher Medical and Biological School, South Ural State University, 454 080 Chelyabinsk, Russia; Department of General Pathology, Saveetha Dental College and Hospitals, Saveetha University, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 600 077, Tamil Nadu, India.
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Gurushankar K, Jeyaseelan SC, Grishina M, Siswanto I, Tiwari R, Puspaningsih NNT. Density Functional Theory, Molecular Dynamics and AlteQ Studies Approaches of Baimantuoluoamide A and Baimantuoluoamide B to Identify Potential Inhibitors of M pro Proteins: a Novel Target for the Treatment of SARS COVID-19. JETP LETTERS 2023; 117:1-10. [PMID: 37360903 PMCID: PMC10184967 DOI: 10.1134/s0021364023600039] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 06/28/2023]
Abstract
COVID-19 has resulted in epidemi conditions over the world. Despite efforts by scientists from all over the world to develop an effective va ine against this virus, there is presently no recognized cure for COVID-19. The most succeed treatments for various ailments come from natural components found in medicinal plants, which are also rucial for the development of new medications. This study intends to understand the role of the baimantuoluoamide A and baimantuoluoamide B molecules in the treatment of Covid19. Initially, density functional theory (DFT) used to explore their electronic potentials along with the Becke3-Lee-Yang-Parr (B3LYP) 6-311 + G(d, p) basis set. A number of characteristics, including the energy gap, hardness, local softness, electronegativity, and electrophilicity, have also been calculated to discuss the reactivity of mole ules. Using natural bond orbital, the title compound's bioactive nature and stability were investigated. Further, both compounds potential inhibitors with main protease (Mpro) proteins, molecular dynamics simulations and AlteQ investigations also studied. Supplementary Information The online version contains supplementary material available at 10.1134/S0021364023600039.
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Affiliation(s)
- K. Gurushankar
- Laboratory of Computational Modeling of Drugs, Higher Medical and Biological School, South Ural State University, 454080 Chelyabinsk, Russia
- Department of Physics, Kalasalingam Academy of Research and Education, 626126 Krishnankoil, Tamilnadu India
| | - S. Ch. Jeyaseelan
- Post Graduate & Research Department of Physics, N.M.S.S.V.N. College, 625019 Madurai, Tamilnadu India
- Post Graduate Department of Physics, Mannar Thirumalai Naciker College, 625004 Madurai, Tamilnadu India
| | - M. Grishina
- Laboratory of Computational Modeling of Drugs, Higher Medical and Biological School, South Ural State University, 454080 Chelyabinsk, Russia
| | - I. Siswanto
- Bioinformati Laboratory, UCoE Research Center for Bio-Molecule Engineering Universitas Airlangga, 60115 Surabaya, Indonesia
| | - R. Tiwari
- Department of Physics, Coordinator Research and Development Cell, Dr CV Raman University, 495113 Kargi Kota, Bilaspur CG India
| | - N. N. T. Puspaningsih
- Department of Chemistry, Faculty of Science and Technology, Universitas Airlangga, 60115 Surabaya, Indonesia
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Gurushankar K, Rimac H, Nadezhda P, Grishina M. Exploring the potential and identifying Withania somnifera alkaloids as novel dihydrofolate reductase (DHFR) inhibitors by the AlteQ method. J Biomol Struct Dyn 2023; 41:13963-13976. [PMID: 36762693 DOI: 10.1080/07391102.2023.2175727] [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: 10/07/2022] [Accepted: 01/29/2023] [Indexed: 02/11/2023]
Abstract
There is an urgent need to discover and develop novel drugs to combat Mycobacterium tuberculosis, the causative agent of tuberculosis (TB) in humans. Alkaloids have been shown to have wide-ranging therapeutic application and could be ideal candidates for drug development, and research is underway to develop new anti-tubercular drugs from natural sources. In this regard, the current research deals with finding novel lead compounds from the Withania somnifera (WS) plant. Broad health benefits of WS are due to the presence of diverse chemical constituents which include anaferine and anahygrine and which belong to the alkaloid family. In the present study, these two compounds have been theoretically studied to understand their electronic properties using the density functional theory (DFT) at the B3LYP/6-311 + G (d,p) level. HOMO and LUMO properties and molecular electrostatic potential (MEP) surface were calculated. Further, to understand the mechanism of action of these compounds and to identify their putative drug target, molecular docking and dynamics studies were employed against Mycobacterium tuberculosis dihydrofolate reductase (DHFR). It was determined that NADP+ affects stability of the complexes by reducing fluctuations of residues 14-23 and 117-126. It was also found that Ile5 and Gln28 play an important role in complexation. Electron density analysis (using the AlteQ method) of the intermolecular region, analyzing both the anaferin-NADP+ and anahygrin-NADP+ complexes showed that anaferin and anahygrin complexes are more stable in the presence of NADP+. It has been established that in most intermolecular contacts the contribution of the ligand to the electron density is greater than that of NADP+. The present study thus provides an excellent way to analyze the effect of anaferine and anahygrine in essential processes of M. tuberculosis.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Krishnamoorthy Gurushankar
- Laboratory of Computational Modeling of Drugs, Higher Medical and Biological School, South Ural State University, Chelyabinsk, Russia
- Department of Physics, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu, India
| | - Hrvoje Rimac
- Department of Medicinal Chemistry, University of Zagreb Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Palko Nadezhda
- Laboratory of Computational Modeling of Drugs, Higher Medical and Biological School, South Ural State University, Chelyabinsk, Russia
| | - Maria Grishina
- Laboratory of Computational Modeling of Drugs, Higher Medical and Biological School, South Ural State University, Chelyabinsk, Russia
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Chinnaiah K, Krishnamoorthy R, Kannan K, Sivaganesh D, Saravanakumar S, Theivasanthi T, Palko N, Grishina M, Maik V, Gurushankar K. Ag nanoparticles synthesized by Datura metel L. leaf extract and their charge density distribution, electrochemical and biological performance. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.140083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Antimicrobial, anti-biofilm, antioxidant and cytotoxic effects of bacteriocin by Lactococcus lactis strain CH3 isolated from fermented dairy products-An in vitro and in silico approach. Int J Biol Macromol 2022; 220:291-306. [PMID: 35981676 DOI: 10.1016/j.ijbiomac.2022.08.087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 07/15/2022] [Accepted: 08/11/2022] [Indexed: 11/20/2022]
Abstract
The current study aimed to screen bacteriocin producing LAB from different dairy products and evaluation of their biological properties. Initially, 12 (4-chess, 4-curd, and 4-yohurt) LAB species were isolated and only 4 isolates alone were selected based on their clear yellow halo zone around the colonies in the selective medium. The selected 4 isolates were identified based on their morphological and biochemical characteristics. Among them, the strain CH3 have showed better antimicrobial effects on selected human pathogens. The isolated strain CH3 were further identified as Lactococcus lactis strain CH3 (MZ636710) by SEM imaging and 16 s rRNA molecular sequencing. Bacteriocin was extracted from L. lactis strain CH3 and partially purified using 60 % ammonium sulphate and then completely purified by G-50 column chromatography. The purified bacteriocin showed a specific activity of 5859.37 AU/mg in 24.7 % of recovery and 10.9-fold purification. The molecular weight of bacteriocin was 3.5 kDa as observed in SDS-PAGE. The bacteriocin showed sensitivity to proteolytic enzymes and resistance to high temperature, wide range of pH, organic solvents and detergents. FT-IR spectral studies of bacteriocin detected the existence of OH/NH-stretching, CH, and COC and CO bonds. NMR spectrum showed one doublet and 4 various singlet peaks at different ppm, indicating the occurrence of six amino acids in the structure of purified bacteriocin. The purified bacteriocin have shown stronger antimicrobial and anti-biofilm activity against selected human pathogens at 100 μg/mL. SEM showed the evidence of structural deformation and loss of membrane integrity of bacterial cells treated with bacteriocin. Bacteriocin exhibited greater DPPH radical scavenging potential with an EC50 value of 12.5 μg/mL. Bacteriocin have not shown significant toxicity on normal human dermal fibroblast (NHDF) cells (83.2 % at 100 μg/ mL). Furthermore, in silico studies using molecular modeling and docking were performed to know the proteins involved in antimicrobial action. The results suggests that bacteriocin could be an alternative to combat AMR pathogens and more suitable for food and dairy industries to preserve food without contamination.
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Nguyen LA, Nguyen TTT, Ngo QA, Nguyen TB. Sulfur‐Catalyzed Oxidative Condensation of Aryl Alkyl Ketones with o‐Phenylenediamines: Access to Quinoxalines. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | - Quoc Anh Ngo
- Vietnam Academy of Science and Technology VIET NAM
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Experimental and Theoretical Studies of Green Synthesized Cu 2O Nanoparticles Using Datura Metel L. J Fluoresc 2022; 32:559-568. [PMID: 34997445 DOI: 10.1007/s10895-021-02880-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 12/27/2021] [Indexed: 01/04/2023]
Abstract
In biomedical applications, Cu2O nanoparticles are of great interest. The bioengineered route is eco-friendly for the synthesis of nanoparticles. Therefore, in the present study, there is an attempt to synthesis Cu2O nanoparticles using Datura metel L. The synthesized nanoparticles were characterized by UV-Vis, XRD, and FT-IR. UV-Vis results suggest the presence of hyoscyamine, atropine in Datura metel L, and also, nanoparticles formation has been confirmed by the presence of absorption peak at 790 nm. The average crystallite size (19.56 nm) was obtained by XRD. FT-IR was also used to confirm the different functional groups. Fourier Power Spectrum was also employed to examine the synthesized nanomaterials spectrum data to emphasize the peak of the prominent frequencies. Density functional theory (DFT) was also utilized to assess the energy of the substance over time, which appears to indicate a stable molecule. Furthermore, calculated energies, thermodynamic properties (such as enthalpies, entropies, and Gibbs-free energies), modeled structures of complexes, crystals, and clusters, and predicted yields, rates, and regio- and stereospecificity of reactions were all in good agreement with experimental results. Overall, the results show that the successful production of Cu2O nanoparticles with Datura metel L. corresponds to theoretical research.
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Nkwe DO, Lotshwao B, Rantong G, Matshwele J, Kwape TE, Masisi K, Gaobotse G, Hefferon K, Makhzoum A. Anticancer Mechanisms of Bioactive Compounds from Solanaceae: An Update. Cancers (Basel) 2021; 13:4989. [PMID: 34638473 PMCID: PMC8507657 DOI: 10.3390/cancers13194989] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 12/27/2022] Open
Abstract
Plants continue to provide unlimited pharmacologically active compounds that can treat various illnesses, including cancer. The Solanaceae family, besides providing economically important food plants, such as potatoes and tomatoes, has been exploited extensively in folk medicine, as it provides an array of bioactive compounds. Many studies have demonstrated the anticancer potency of some of the compounds, but the corresponding molecular targets are not well defined. However, advances in molecular cell biology and in silico modelling have made it possible to dissect some of the underlying mechanisms. By reviewing the literature over the last five years, we provide an update on anticancer mechanisms associated with phytochemicals isolated from species in the Solanaceae plant family. These mechanisms are conveniently grouped into cell cycle arrest, transcription regulation, modulation of autophagy, inhibition of signalling pathways, suppression of metabolic enzymes, and membrane disruption. The majority of the bioactive compounds exert their antiproliferative effects by inhibiting diverse signalling pathways, as well as arresting the cell cycle. Furthermore, some of the phytochemicals are effective against more than one cancer type. Therefore, understanding these mechanisms provides paths for future formulation of novel anticancer drugs, as well as highlighting potential areas of research.
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Affiliation(s)
- David O. Nkwe
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Palapye, Botswana; (B.L.); (G.R.); (T.E.K.); (K.M.); (G.G.)
| | - Bonolo Lotshwao
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Palapye, Botswana; (B.L.); (G.R.); (T.E.K.); (K.M.); (G.G.)
| | - Gaolathe Rantong
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Palapye, Botswana; (B.L.); (G.R.); (T.E.K.); (K.M.); (G.G.)
| | - James Matshwele
- Department of Chemical and Forensic Sciences, Botswana International University of Science and Technology, Palapye, Botswana;
- Department of Applied Sciences, Botho University, Gaborone, Botswana
| | - Tebogo E. Kwape
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Palapye, Botswana; (B.L.); (G.R.); (T.E.K.); (K.M.); (G.G.)
| | - Kabo Masisi
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Palapye, Botswana; (B.L.); (G.R.); (T.E.K.); (K.M.); (G.G.)
| | - Goabaone Gaobotse
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Palapye, Botswana; (B.L.); (G.R.); (T.E.K.); (K.M.); (G.G.)
| | - Kathleen Hefferon
- Virology Laboratory, Department of Cell & Systems Biology, University of Toronto, Toronto, ON M5S 3B2, Canada;
| | - Abdullah Makhzoum
- Department of Biological Sciences and Biotechnology, Botswana International University of Science and Technology, Palapye, Botswana; (B.L.); (G.R.); (T.E.K.); (K.M.); (G.G.)
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