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Thambi A, Chakraborty K. Anti-inflammatory decurrencyclics A-B, two undescribed nor-dammarane triterpenes from triangular sea bell Turbinaria decurrens. Nat Prod Res 2023; 37:713-724. [PMID: 35707894 DOI: 10.1080/14786419.2022.2087182] [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: 03/11/2022] [Accepted: 05/31/2022] [Indexed: 10/18/2022]
Abstract
Intertidal triangular sea bell Turbinaria decurrens (Bory de Saint-Vincent) (family Sargassaceae) belongs to one of the largely abundant genus of marine brown alga. Bioactivity-directed chromatographic purification of the organic extract of T. decurrens afforded two new nor-dammarane triterpenoids named as decurrencyclic A-B. Decurrencyclic B showed superior attenuation properties against cyclooxygenase-2 (IC50 13.98 μM) and 5-lipoxygenase (IC50 3.02 μM) in contrast with decurrencyclic A. Decurrencyclic B showed higher inhibition potential against COX-2 than that revealed by the anti-inflammatory agent, ibuprofen (IC50 70.44 μM). The higher selectivity index of decurrencyclics (1.39-1.57) acknowledged their selective attenuation property against inducible cyclooxygenase-2. In-silico molecular modeling analysis of decurrencyclic B with the inflammatory enzymes showed least binding energy of -14.55 kcal mol-1. These reports have proven that decurrencyclic B could be a potential therapeutic lead for use against inflammatory pathogenesis.
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Affiliation(s)
- Anjaly Thambi
- Central Marine Fisheries Research Institute, Cochin, Kerala, India
- Department of Applied Chemistry, Cochin University of Science and Technology, Cochin, Kerala, India
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Antony T, Chakraborty K, Dhara S. Sulfated galactofucan from seaweed Padina tetrastromatica attenuates proteolytic enzyme dipeptidyl-peptidase-4: a potential anti-hyperglycemic lead. Nat Prod Res 2022; 36:6240-6251. [PMID: 35037546 DOI: 10.1080/14786419.2022.2025802] [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: 09/09/2021] [Revised: 12/22/2021] [Accepted: 12/28/2021] [Indexed: 12/25/2022]
Abstract
Dipeptidyl-peptidase-4 is a multifunctional ectoenzyme, which is implicated with hyperglycemic pathophysiology. Therefore, dipeptidyl-peptidase-4 inhibitors could be used as an attractive therapeutic strategy in blood-glucose homeostasis to attenuate the pathophysiologies of diabetes. A sulfated galactofucan characterized as [→1)-O-4-sulfonato-α-fucopyranosyl-(2→1)-O-2-sulfonato-α-fucopyranose-(3→] along with a branch of [→1)-6-O-methyl-β-galactopyranosyl-(4→] unit at the C-4 position of O-2-sulfonato-α-fucopyranose, isolated from the seaweed Padina tetrastromatica, exhibited prospective attenuation property against dipeptidyl-peptidase-4 (IC50 0.25 mg mL-1). The studied sulfated galactofucan exhibited potential inhibitory properties against carbolytic enzymes α-amylase (IC50 0.98 mg mL-1) and α-glucosidase (IC50 0.87 mg mL-1) in comparison with the standard antidiabetic agent acarbose, along with radical scavenging activities. The seaweed-originated galactofucan could be developed as a promising natural therapeutic lead against hyperglycemic disorder.
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Affiliation(s)
- Tima Antony
- Central Marine Fisheries Research Institute, Cochin, India
- Department of Chemistry, Mangalore University, Mangalagangothri, India
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Paulose SK, Chakraborty K. Anti-hyperglycemic Δ 5 steroids, marginoids A-C from marine veined octopus Amphioctopus marginatus (Octopodidae): Prospective natural leads inhibit serineexopeptidase dipeptidyl peptidase-4. Steroids 2022; 186:109090. [PMID: 35850257 DOI: 10.1016/j.steroids.2022.109090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 06/25/2022] [Accepted: 07/01/2022] [Indexed: 10/17/2022]
Abstract
Three Δ5 steroid analogues, marginoids A-C were purified from the organic extract of marine veined octopus Amphioctopus marginatus (Taki, 1964) (family Octopodidae) distributed on the Asian and Mediterranean coasts. Their structures were elucidated as (5Z)-3β-acetoxy-cholesta-5-en-25-ethylene-22β-hydroxy-23,26-lactone (marginoid A), (5Z, 25Z)-3β-yl-(1'-(E)-3'-hydroxy-4'-methyl-hex-5'-enoate)-22-oxo-26-furanyl-cholesta-5,25-diene (marginoid B), and (5Z)-3β-yl-(7'-methoxypropan-8'-yl)-tetrahydro-2H-pyran-2-one-cholesta-5,24-dien (marginoid C) based on extensive spectroscopic experiments. Marginoid B with hydroxyl-methyl-hexanoate at the C-3 position in conjunction with the heterocyclic furanyl ring displayed superior anti-hyperglycemic properties as acknowledged by its promising serine protease dipeptidyl peptidase-4 attenuation potential (IC50 3.49 µM) displaying comparable activity with the standard DPP-4 inhibitor (DPP-4i) diprotin A (IC50 4.53 µM). The anti-hyperglycemic properties were corroborated by the promising antioxidant activities (IC50 ∼ 0.8-1.0 mM) of these Δ5 steroids, marginoids A-C. Sizeably greater electronic properties, balanced hydrophobic-lipophilic properties (log POW 6.4-8.3), and comparatively lower steric factors were directly proportional to their bioactive properties. Molecular simulation studies in the binding sites of DPP-4 and lesser binding energy (-12.17 kcal/mol) and inhibition constant (Ki 1.20 nM) of marginoid B could be correlated with anti-hyperglycemic properties. Promising bioactivities of marginoid B isolated from A. marginatus are anticipated for nutraceutical applications against hyperglycemia.
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Affiliation(s)
- Silpa Kunnappilly Paulose
- Marine Bioprospecting Section of Marine Biotechnology, Fish Nutrition and Health Division, Central Marine Fisheries Research Institute, Ernakulam North, P.B. No. 1603, Cochin, India
| | - Kajal Chakraborty
- Marine Bioprospecting Section of Marine Biotechnology, Fish Nutrition and Health Division, Central Marine Fisheries Research Institute, Ernakulam North, P.B. No. 1603, Cochin, India.
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Thambi A, Chakraborty K. Brown and Red Marine Macroalgae as Novel Bioresources of Promising Medicinal Properties. JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2022. [DOI: 10.1080/10498850.2022.2035877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Anjaly Thambi
- Marine Biotechnology Division, Central Marine Fisheries Research Institute, Cochin, India
- Department of Applied Chemistry, Cochin University of Science and Technology, South Kalamassery, Cochin, India
| | - Kajal Chakraborty
- Department of Applied Chemistry, Cochin University of Science and Technology, South Kalamassery, Cochin, India
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Ellipyrones A-B, from oval bone cuttlefish Sepia elliptica: Antihyperglycemic γ-pyrone enclosed macrocyclic polyketides attenuate dipeptidyl peptidase-4 and carbolytic enzymes. Med Chem Res 2022. [DOI: 10.1007/s00044-022-02846-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Tziveleka LA, Tammam MA, Tzakou O, Roussis V, Ioannou E. Metabolites with Antioxidant Activity from Marine Macroalgae. Antioxidants (Basel) 2021; 10:1431. [PMID: 34573063 PMCID: PMC8470618 DOI: 10.3390/antiox10091431] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/30/2021] [Accepted: 09/03/2021] [Indexed: 02/06/2023] Open
Abstract
Reactive oxygen species (ROS) attack biological molecules, such as lipids, proteins, enzymes, DNA, and RNA, causing cellular and tissue damage. Hence, the disturbance of cellular antioxidant homeostasis can lead to oxidative stress and the onset of a plethora of diseases. Macroalgae, growing in stressful conditions under intense exposure to UV radiation, have developed protective mechanisms and have been recognized as an important source of secondary metabolites and macromolecules with antioxidant activity. In parallel, the fact that many algae can be cultivated in coastal areas ensures the provision of sufficient quantities of fine chemicals and biopolymers for commercial utilization, rendering them a viable source of antioxidants. This review focuses on the progress made concerning the discovery of antioxidant compounds derived from marine macroalgae, covering the literature up to December 2020. The present report presents the antioxidant potential and biogenetic origin of 301 macroalgal metabolites, categorized according to their chemical classes, highlighting the mechanisms of antioxidative action when known.
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Affiliation(s)
- Leto-Aikaterini Tziveleka
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (L.-A.T.); (M.A.T.); (O.T.); (V.R.)
| | - Mohamed A. Tammam
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (L.-A.T.); (M.A.T.); (O.T.); (V.R.)
- Department of Biochemistry, Faculty of Agriculture, Fayoum University, Fayoum 63514, Egypt
| | - Olga Tzakou
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (L.-A.T.); (M.A.T.); (O.T.); (V.R.)
| | - Vassilios Roussis
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (L.-A.T.); (M.A.T.); (O.T.); (V.R.)
| | - Efstathia Ioannou
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (L.-A.T.); (M.A.T.); (O.T.); (V.R.)
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Francis P, Chakraborty K. Anti-inflammatory pregnane-type steroid derivatives clathroids A-B from the marine Microcionidae sponge Clathria (Thalysias) vulpina: Prospective duel inhibitors of pro-inflammatory cyclooxygenase-2 and 5-lipoxygenase. Steroids 2021; 172:108858. [PMID: 33971206 DOI: 10.1016/j.steroids.2021.108858] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 03/17/2021] [Accepted: 04/24/2021] [Indexed: 12/27/2022]
Abstract
Two pregnane-type of steroid derivatives characterized as 5α-pregna-3β-methyl pent-3-enoate-12β, 16β diol-20-one (clathroid A) and 12β,15β- dihydroxypregna-4,6-diene-3,20-dione (clathroid B) were purified from the crude extract of the marine sponge, Clathria (Thalysias) vulpina (family Microcionidae) by extensive chromatographic fractionation. Spectroscopic methods including nuclear magnetic resonance spectroscopy were employed to characterize the purified clathroids A-B. The studied compounds exhibited duel inhibitory potentials against pro-inflammatory cyclooxygenase-2 and 5-lipoxygenase (median inhibitory concentration, IC50 < 1 mM), whereas the attenuation property of clathroid A against 5-lipoxygenase (IC50 0.85 mM) was greater than the standard anti-inflammatory ibuprofen (IC50 4.51 mM, p < 0.05). Greater selectivity index (anti cyclooxygense-2/anti cyclooxygense-1) of the studied clathroids (>1) than ibuprofen (0.43) attributed the greater selective attenuation properties towards pro-inflammatory inducible cyclooxygenase-2 than its constitutive isoenzyme cyclooxygenase-1. The antioxidant potentials of clathroid A against 2, 2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (IC50 0.80 mM) and diphenyl-1-picrylhydrazyl (IC50 0.83 mM) free radicals were greater than those of clathroid B (IC50 0.86-0.96 mM). Structure-activity analyses showed that the bioactivities of the clathroids were directly related to their electronic parameters coupled with permissible hydrophobic properties. Clathroid A exhibited grater electronic parameter (topological polar surface area tPSA, 83.83) than clathroid B (74.60) and ibuprofen (37.30), which were found to be in agreement with the prospective anti-inflammatory profile of clathroid A. Clathroid A exhibited higher number of hydrogen bonding interactions with 5-lipoxygenase active site and lesser docking values, such as docking score (DS -12.90 kcal mol-1) and inhibition constant (Ki 1.11 nM) than those recorded by clathroid B (DS -10.49 kcal mol-1; Ki 13.88 nM). The molecular binding properties of clathroid A with 5-lipoxidase inferred that its docking score/ binding energy were positively correlated with their in vitro bioactivie potentilas. A putative biosynthetic pathway of the studied clathroids was proposed from a pregnenolone precursor. The present study recognized the potential of clathroid A isolated from C. (Thalysias) vulpina as prospective anti-inflammatory lead that could find its use in medicinal applications.
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Affiliation(s)
- Prima Francis
- Marine Bioprospecting Section of Marine Biotechnology Division, Central Marine Fisheries Research Institute, Ernakulam North, P.B. No. 1603, Cochin, India
| | - Kajal Chakraborty
- Marine Bioprospecting Section of Marine Biotechnology Division, Central Marine Fisheries Research Institute, Ernakulam North, P.B. No. 1603, Cochin, India.
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Chakraborty K, Francis P. Apoptotic effect of chromanone derivative, hyrtiosone A from marine demosponge Hyrtios erectus in hepatocellular carcinoma HepG2 cells. Bioorg Chem 2021; 114:105119. [PMID: 34252861 DOI: 10.1016/j.bioorg.2021.105119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 03/31/2021] [Accepted: 06/19/2021] [Indexed: 01/18/2023]
Abstract
The tumor suppressor proteins p53 and p27 exhibited a significant role in the survival of cells and regulation of cellular division and growth. In majority of the human tumors, particularly in hepatocellular carcinoma, these proteins are inactivated by mutation or deletion, and are considered to predict the pathophysiology related to liver cancer. The present study evaluated the activation of the p53 and p27 pathways as a useful therapeutic tool to attenuate hepatocellular carcinoma. Three undescribed homologous chromanone derivatives, hyrtiosones A-C were isolated from the organic extract of marine demosponge Hyrtios erectus (family Thorectidae). Preliminary bioactivity assessments found that hyrtiosone A exhibited prospective anti-inflammatory (IC50 1.02-1.86 mM) and antioxidant (IC50 0.74-0.83 mM) properties. Molecular docking analysis of the hyrtiosones using p53-murine double minute complex revealed lesser docking parameters for hyrtiosone A (binding energy -11.12 kcal mol-1, docking score -12.18 kcal mol-1) thereby attributing its greater bioactivity. Hyrtiosone A was furthermore analyzed for in vitro anticancer activity in hepatocellular carcinoma HepG2 cells. Morphological assessment of hyrtiosone A treated HepG2 cell line by acridine orange/ethidium bromide fluorescence staining revealed greater number of apoptotic cells, and was found to be comparable with the cells treated with the standard doxorubicin. Further the Annexin V-fluorescein isothiocyanate assay of hyrtiosone A treated HepG2 cell line by flow cytometry displayed greater number of early apoptotic cells (51.24%) than that exhibited by the standard (21.45%). Cell cycle distribution analysis showed that hyrtiosone A arrested the S and G2/M phase of cell cycle and upregulate the gene expression of p53 and p27 in hepatocellular carcinoma HepG2 cells.
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Affiliation(s)
- Kajal Chakraborty
- Marine Bioprospecting Section of Marine Biotechnology Division, Central Marine Fisheries Research Institute, Ernakulam North, P.B. No. 1603, Cochin 682018, Kerala State, India.
| | - Prima Francis
- Marine Bioprospecting Section of Marine Biotechnology Division, Central Marine Fisheries Research Institute, Ernakulam North, P.B. No. 1603, Cochin 682018, Kerala State, India
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Francis P, Chakraborty K. Anti-inflammatory scalarane-type sesterterpenes, erectascalaranes A–B, from the marine sponge Hyrtios erectus attenuate pro-inflammatory cyclooxygenase-2 and 5-lipoxygenase. Med Chem Res 2021. [DOI: 10.1007/s00044-020-02682-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Carroll AR, Copp BR, Davis RA, Keyzers RA, Prinsep MR. Marine natural products. Nat Prod Rep 2021; 38:362-413. [PMID: 33570537 DOI: 10.1039/d0np00089b] [Citation(s) in RCA: 198] [Impact Index Per Article: 66.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This review covers the literature published in 2019 for marine natural products (MNPs), with 719 citations (701 for the period January to December 2019) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1490 in 440 papers for 2019), together with the relevant biological activities, source organisms and country of origin. Pertinent reviews, biosynthetic studies, first syntheses, and syntheses that led to the revision of structures or stereochemistries, have been included. Methods used to study marine fungi and their chemical diversity have also been discussed.
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Affiliation(s)
- Anthony R Carroll
- School of Environment and Science, Griffith University, Gold Coast, Australia. and Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia
| | - Brent R Copp
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Rohan A Davis
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia and School of Enivironment and Science, Griffith University, Brisbane, Australia
| | - Robert A Keyzers
- Centre for Biodiscovery, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Michèle R Prinsep
- Chemistry, School of Science, University of Waikato, Hamilton, New Zealand
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Anti-inflammatory polyoxygenated furanocembranoids, salmacembranes A–B from the sea urchin Salmacis bicolor attenuate pro-inflammatory cyclooxygenases and lipoxygenase. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02620-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Francis P, Chakraborty K. Antioxidant and anti-inflammatory cembrane-type diterpenoid from Echinoidea sea urchin Stomopneustes variolaris attenuates pro-inflammatory 5-lipoxygenase. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02511-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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