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Ghandourah MA, Alarif WM, Abdel-Lateff A, Al-Footy KO, Halid M, Al-Lihaibi SS, Alorfi HS. Antiproliferative effects of isoprenoids from Sarcophyton glaucum on breast cancer MCF-7 cells. TROP J PHARM RES 2017. [DOI: 10.4314/tjpr.v16i3.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Al-Footy KO, Alarif WM, Zubair MS, Ghandourah MA, Aly MM. Antibacterial and cytotoxic properties of isoprenoids from the red sea soft coral, Lobophytum sp. TROP J PHARM RES 2016. [DOI: 10.4314/tjpr.v15i7.11] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Alarif WM, Al-Lihaibi SS, Ghandourah MA, Orif MI, Basaif SA, Ayyad SEN. Cytotoxic scalarane-type sesterterpenes from the Saudi Red Sea sponge Hyrtios erectus. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2016; 18:611-617. [PMID: 26630474 DOI: 10.1080/10286020.2015.1115019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 10/28/2015] [Indexed: 06/05/2023]
Abstract
The CHCl3/MeOH extract of the marine sponge Hyrtios erectus showed cytotoxicity against three cancer cell lines HepG2, A549, and PC-3 with IC50 0.055, 0.044, and 0.023 μg/ml, respectively. The CH2Cl2 soluble fraction afforded three scalarane sesterterpenes (1-3) along with a cholestane derivative (4) and an indole alkaloid (5). Chemical structures were established by spectroscopic techniques and comparison with data reported in the literature. Scalarinol (1) was found as a new metabolite, while heteronemin (2) and 12-O-deacetyl-19-deoxyscalarin (3) are known compounds. 1-3 exhibited cytotoxic activity against the cancer cell lines with IC50 values ranging from 14 to 230 μM. The molecular affinity to the DNA was employed as marker to examine the proposed mechanism of cytotoxic activities. Compound 2, with IC50 28 μg/ml, displayed the highest affinity to the DNA.
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Lopez JAV, Al-Lihaibi SS, Alarif WM, Abdel-Lateff A, Nogata Y, Washio K, Morikawa M, Okino T. Wewakazole B, a Cytotoxic Cyanobactin from the Cyanobacterium Moorea producens Collected in the Red Sea. JOURNAL OF NATURAL PRODUCTS 2016; 79:1213-8. [PMID: 26980238 DOI: 10.1021/acs.jnatprod.6b00051] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
A mass spectrometry (MS)-guided isolation has led to the purification of a new cyanobactin, wewakazole B (1), along with the known compound curacin D from a Red Sea Moorea producens. The planar structure of 1 was elucidated using a combination of NMR and MS techniques. After ozonolysis and acid hydrolysis, the absolute configurations of the amino acid components of 1 were determined by chiral-phase LC-MS and HPLC analyses. Notably, compound 1 exhibited cytotoxic activity toward human MCF7 breast cancer cells (IC50 = 0.58 μM) and human H460 lung cancer cells (IC50 = 1.0 μM) and was also found to be inactive in a siderophore assay.
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Abdel-Lateff A, Al-Abd AM, Alahdal AM, Alarif WM, Ayyad SEN, Al-Lihaibi SS, Hegazy ME, Al Mohammadi A, Abdelghany TM, Abdel-Naim AB, Moustafa MA, Banjer ZM, Azhar AS. Antiproliferative effects of triterpenoidal derivatives, obtained from the marine sponge Siphonochalina sp., on human hepatic and colorectal cancer cells. Z NATURFORSCH C 2016; 71:29-35. [DOI: 10.1515/znc-2015-0160] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Abstract
Three triterpenoidal derivatives [Sipholenol A (1), sipholenol L (2) and sipholenone A (3)] were isolated from the Red Sea sponge Siphonochalina sp. The structures were determined based on spectroscopic measurements (NMR, UV, IR and MS). The isolated compounds were evaluated for their cytotoxic activity against three cancer cell lines; HepG2, Caco-2 and HT-29. Moreover, the effects of these metabolites on cell cycle progression as well as cell cycle regulating proteins were assessed. Compounds 1, 2 and 3 showed moderate activity against HepG2 cells with IC50 values of 17.18 ± 1.18, 24.01 ± 0.59 and 35.06 ± 1.10 μM, respectively. Compounds 1 and 2 exerted a considerable antiproliferative effect with IC50 values of 4.80 ± 0.18 and 26.64 ± 0.30 μM, respectively, against Caco-2 cells. Finally, 1 and 2 exhibited antiproliferative activity against colorectal cancer cells (HT-29) with IC50 values of 24.65 ± 0.80 and 4.48 ± 0.1 μM, respectively. Cell cycle analysis indicated that these compounds induced cell cycle arrest particularly in G0/G1 and S phases. Furthermore, the triterpenoids increased the expression of cyclin-B1, cyclin-D1 and cleaved caspase-3, as determined by immunofluorescence, indicating an important role of apoptosis in cell death induced by these compounds.
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Ayyad SEN, Katoua DF, Alarif WM, Sobahi TR, Aly MM, Shaala LA, Ghandourah MA. Two new polyacetylene derivatives from the Red Sea sponge Xestospongia sp. ACTA ACUST UNITED AC 2015; 70:297-303. [PMID: 26618569 DOI: 10.1515/znc-2015-5015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Accepted: 10/15/2015] [Indexed: 11/15/2022]
Abstract
Two new polyacetylenes (1 and 2), along with two known C-30 steroids (3 and 4) were identified from the Red Sea sponge, Xestospongia sp. The chemical structures were determined based on extensive spectroscopic measurements 1D (1H, 13C and DEPT) and 2D (COSY, HSQC and HMBC) NMR, UV, IR and MS. The new compounds 1 and 2 were evaluated for their antimicrobial and antitumor activities. 1 and 2 were active against multidrug- resistant bacteria with MICs ranged from 2.2 to 4.5 μM. No toxicity was recorded for the two tested compounds up to 5 μM using Artemia salina as a test organism. Compound 2 showed excellent antifungal activity against some pathogenic fungi such as Aspergillus niger and Candida albicans (MIC 2.2-2.5 μM) and antitumor activity against both Ehrlich ascites carcinoma and lymphocytic leukemia (LD50 5.0 μM).
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Ayyad SEN, Hoye TR, Alarif WM, Al Ahmadi SM, Basaif SA, Ghandourah MA, Badria FA. Differential cytotoxic activity of the petroleum ether extract and its furanosesquiterpenoid constituents from Commiphora molmol resin. ACTA ACUST UNITED AC 2015; 70:87-92. [PMID: 26020558 DOI: 10.1515/znc-2014-4191] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 04/26/2015] [Indexed: 11/15/2022]
Abstract
This study revealed a differential cytotoxic activity of the petroleum ether extract (IC₅₀ =5 μg/mL) of the resinous exudates of Commiphora molmol against two mouse cell lines KA31T and NIH3T3 (untransformed and transformed mouse fibroblasts, respectively). Four new compounds (1-4) and five known compounds (5-9) were isolated from the petroleum ether extract. The identity of these new compounds was determined as γ-elemane lactone (1), 5-αH,8-βH-eudesma-1,3,7(11)-trien-8,12-olide (2), 2-hydroxy-11,12-dihydrofuranodiene (3), and 2-hydroxyfuranodiene (4). 1 and 2 displayed the highest cytotoxic activity against NIH3T3 cells. 7 and 9 exhibited moderate cytotoxic activity against KA31T cells. Compounds 3-6 showed weak cytotoxic activities against both cell lines. These results may explain the high efficacy of the petroleum ether fraction in several myrrh-derived pharmaceutical preparations.
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Ghandourah MA, Alarif WM, Abdel-Lateff A, Al-Lihaibi SS, Ayyad SEN, Basaif SA, Badria FA. Two new terpenoidal derivatives: a himachalene-type sesquiterpene and 13,14-secosteroid from the soft coral Litophyton arboreum. Med Chem Res 2015. [DOI: 10.1007/s00044-015-1456-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zubair MS, Al-Footy KO, Ayyad SEN, Al-Lihaibi SS, Alarif WM. A review of steroids from Sarcophyton species. Nat Prod Res 2015; 30:869-79. [PMID: 26299957 DOI: 10.1080/14786419.2015.1079187] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This review reports the structural diversity of steroids from Sarcophyton species based on literature from the beginning of marine steroid research until now. There are 65 compounds studied from eight species. Most of them are polyhydroxy-type steroids of C-27-C-31 carbon skeleton. Their biological activities are highly diverse ranging from cytotoxic, antibacterial, antifungal, antiviral, anti-inflammatory, antidiabetic to antiosteoporosis properties.
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Alarif WM, Al-Footy KO, Zubair MS, Halid PH M, Ghandourah MA, Basaif SA, Al-Lihaibi SS, Ayyad SEN, Badria FA. The role of new eudesmane-type sesquiterpenoid and known eudesmane derivatives from the red alga Laurencia obtusa as potential antifungal–antitumour agents. Nat Prod Res 2015; 30:1150-5. [DOI: 10.1080/14786419.2015.1046378] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Hoye TR, Alarif WM, Basaif SS, Abo-Elkarm M, Hamann MT, Wahba AE, Ayyad SEN. New cytotoxic cyclic peroxide acids from Plakortis sp. marine sponge. ARKIVOC 2015; 2015:164-175. [PMID: 26835518 PMCID: PMC4732738 DOI: 10.3998/ark.5550190.p008.948] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Bioassay-guided fractionation of the extract of Jamaican marine sponge Plakortis sp. followed by preparative TLC and HPLC yielded several known methyl ester cyclic peroxides (1a, 2a, 3a, 4, 5), known plakortides (6,7), known bicyclic lactone (8) and new cyclic peroxide acids (1b, 2b, 3b). The chemical structures were elucidated by extensive interpretation of their spectroscopic data. These natural products showed remarkable in vitro cytotoxicity against several cancer cell lines.
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Al-Lihaibi SS, Abdel-Lateff A, Alarif WM, Nogata Y, Ayyad SEN, Okino T. Potent Antifouling Metabolites from Red Sea Organisms. ACTA ACUST UNITED AC 2015. [DOI: 10.14233/ajchem.2015.18701] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Angawi RF, Alarif WM, Hamza RI, Badria FA, Ayyad SEN. New Cytotoxic Laurene-, Cuparene-, and Laurokamurene-Type Sesquiterpenes from the Red AlgaLaurencia obtusa. Helv Chim Acta 2014. [DOI: 10.1002/hlca.201300464] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abdel-Lateff A, Alarif WM, Ayyad SEN, Al-Lihaibi SS, Basaif SA. New cytotoxic isoprenoid derivatives from the Red Sea soft coral Sarcophyton glaucum. Nat Prod Res 2014; 29:24-30. [PMID: 25174343 DOI: 10.1080/14786419.2014.952637] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Chemical investigation of the soft coral Sarcophyton glaucum collected from the Red Sea led to isolation of 11 isoprenoidal metabolites (1-11). A new sesquiterpenoid, 6-oxo-germacra-4(15),8,11-triene (1), a new natural cembranoid, sarcophinediol, along with two known sesquiterpenoids (2 and 3) and seven known cembranoids (5-11) was obtained. The structures of the compounds were established based on their NMR, MS, IR and UV spectral data. All compounds were evaluated for their cytotoxicity employing three cancer cell lines (HepG2, MCF-7 and HCT116). Compounds 4 and 6 showed significant cytotoxicity towards HepG2 with IC50 values of 18.8 ± 0.07 and 19.9 ± 0.02 μM; respectively. Compounds 5-7 exhibited potent cytotoxicity against MCF-7 cells with IC50 values of 9.9 ± 0.03, 2.4 ± 0.04 and 3.2 ± 0.02 μM, respectively. Compounds 1, 4 and 5 showed significant activities towards HCT116 cells with IC50 values of 29.4 ± 0.03, 19.4 ± 0.02 and 25.8 ± 0.03 μM, respectively.
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Al-Footy KO, Alarif WM, Asiri F, Aly MM, Ayyad SEN. Rare pyrane-based cembranoids from the Red Sea soft coral Sarcophyton trocheliophorum as potential antimicrobial–antitumor agents. Med Chem Res 2014. [DOI: 10.1007/s00044-014-1147-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abdel-Lateff A, Alarif WM, Asfour HZ, Ayyad SEN, Khedr A, Badria FA, Al-Lihaibi SS. Cytotoxic effects of three new metabolites from Red Sea marine sponge, Petrosia sp. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 37:928-935. [PMID: 24699241 DOI: 10.1016/j.etap.2014.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 03/02/2014] [Accepted: 03/05/2014] [Indexed: 06/03/2023]
Abstract
Marine sponges represent an affluent source of biogenetically unprecedented array of biologically active compounds. This study revealed the isolation of ten compounds from marine sponge of Petrosia sp. Their chemical structures were determined by using 1D and 2D NMR, UV, IR and MS measurements. A polyoxygenated steroid (3β,7β,9α-trihydroxycholest-5-en (1), a purine-derivative (3,7-dimethyl-2-(methylamino)-3H-purin-6(7H)-one (2) and a sphingolipid (N-((3S,E)-1,3-dihydroxytetracos-4-en-2-yl)stearamide (3) proved to be new compounds. Meanwhile, seven known compounds; (4-10) were also identified. The cytotoxicity of the total extract and the isolated compounds were subjected to cytotoxicity evaluation employing two cancer cell lines; HepG2 and MCF-7. All tested compounds exhibited cytotoxic effect on both cancer cell lines with IC(50) in range of 20-500 μM. The proposed mechanism of cytotoxic activities was examined through its molecular affinity to the DNA. Compound 5 showed the highest affinity to the DNA with IC(50) 30 μg/mL.
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Alarif WM, Abdel-Lateff A, Al-Abd AM, Basaif SA, Badria FA, Shams M, Ayyad SEN. ChemInform Abstract: Selective Cytotoxic Effects on Human Breast Carcinoma of New Methoxylated Flavonoids from Euryops arabicus Grown in Saudi Arabia. CHEMINFORM 2013; 44:no-no. [DOI: 10.1002/chin.201352208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Alarif WM, Abdel-Lateff A, Al-Lihaibi SS, Ayyad SEN, Badria FA. A New Cytotoxic Brominated Acetylenic Hydrocarbon from the Marine Sponge Haliclona sp. with a Selective Effect against Human Breast Cancer. Z NATURFORSCH C 2013. [DOI: 10.5560/znc.2013.68c0070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Alarif WM, Abdel-Lateff A, Al-Lihaibi SS, Ayyad SEN, Badria FA. A new cytotoxic brominated acetylenic hydrocarbon from the marine sponge Haliclona sp. with a selective effect against human breast cancer. Z NATURFORSCH C 2013; 68:70-75. [PMID: 23659175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Three acetylenic brominated derivatives were isolated from a Red Sea sponge, Haliclona sp. One of them, 18-bromooctadeca-9(E),17(E)-dien-7,15-diynoic acid (3), is a known metabolite, and the other two are new compounds, (1E,5E,12E,19E)-1,22-dibromodocosa-1,5,12,19-tetraen-3,14,21-triyne (1) and methyl 18-bromooctadeca-9(E),17(E)-dien-7,15-diynoate (2) which was isolated for the first time as a natural metabolite. Structures of all compounds were determined based on extensive spectroscopic measurements [1D (1H, 13C and DEPT) and 2D (HSQC, HMBC and NOESY) NMR, MS, UV, and IR]. All compounds, except 3, were evaluated for their cytotoxicity employing four cancer cell lines, i.e. MCF-7 (human breast cancer), HepG2 (human hepatocellular carcinoma), WI-38 (skin carcinoma), and Vero (African green monkey kidney). Compounds 1 and 2 had potent selective antitumour activity towards MCF-7 cells with IC50 values of 32.5 and 50.8 microM, respectively.
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Ayyad SEN, Basaif SA, Al-Saggaf AT, Alarif WM. Vincamine and 14-epi-vincamine indole alkaloids from Ambelania occidentalis. JOURNAL OF SAUDI CHEMICAL SOCIETY 2012. [DOI: 10.1016/j.jscs.2011.02.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Alarif WM, Al-Lihaibi SS, Ayyad SEN, Abdel-Rhman MH, Badria FA. Laurene-type sesquiterpenes from the Red Sea red alga Laurencia obtusa as potential antitumor-antimicrobial agents. Eur J Med Chem 2012; 55:462-6. [PMID: 22819506 DOI: 10.1016/j.ejmech.2012.06.060] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 06/24/2012] [Accepted: 06/30/2012] [Indexed: 11/30/2022]
Abstract
Three new laurene-type sesquiterpenes, 12-hydroxy isolaurene (1), 8,11-dihydro-12-hydroxy isolaurene (2) and isolauraldehyde (3) were isolated from the organic extract of the red alga Laurencia obtusa. The chemical structures of isolates were determined by interpretation of their spectral data 1D and 2D NMR, UV, IR and MS. The newly isolated compounds were tested for their antimicrobial and antitumor activities. Compounds (1-3) exhibited potent activity against the gram-positive Bacillus subtilis and Staphylococcus aureus, where 3 proved to be the most active (MIC 35 and 27 μg/mL, respectively). Moreover, compound 3 exhibited a significant activity against Candida albicans (MIC of 70 μg/mL) and revealed to have very promising activity in an in vitro model of Ehrlich ascites Carcinoma.
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Alarif WM, Ayyad SEN, El-Assouli SM, Al-Lihaibi SS. Antigenotoxic ketosteroid from the red algaeJania adhaerens. Nat Prod Res 2012; 26:785-91. [DOI: 10.1080/14786419.2010.548336] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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48
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Ayyad SEN, Abdel-Lateff A, Alarif WM, Patacchioli FR, Badria FA, Ezmirly ST. In vitro and in vivo study of cucurbitacins-type triterpene glucoside from Citrullus colocynthis growing in Saudi Arabia against hepatocellular carcinoma. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2012; 33:245-251. [PMID: 22245841 DOI: 10.1016/j.etap.2011.12.010] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 11/17/2011] [Accepted: 12/08/2011] [Indexed: 05/28/2023]
Abstract
Chromatographic investigation of fruits obtained from Citrullus colocynthis, growing in Saudi Arabia, led to isolation of two compounds; Cucurbitacin E glucoside (Cu E, 1), and Cucurbitacin I glucoside (Cu I, 2). The chemical structures of 1 and 2, were elucidated by spectroscopic analyses include; 1D ((1)H and (13)C) and 2D (COSY, HMQC and HMBC) NMR and ESI-MS spectroscopy. The in vitro cytotoxic activity against hepatoma cell line (HepG2) and mice-bearing tumor of Ehrlich's ascites carcinoma (EAC) of the compounds were estimated. Both compounds had potent inhibitory activity on HepG2 with IC(50) 3.5 and 2.8 nmol/mL, respectively. In addition to these activities, the in vivo study employing EAC, showed the capability of both compounds to prolong the survival time, life span and normalize the biochemical parameters of the infected mice with EAC.
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MESH Headings
- Animals
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/pharmacology
- Carcinoma, Ehrlich Tumor/drug therapy
- Carcinoma, Ehrlich Tumor/pathology
- Carcinoma, Hepatocellular/pathology
- Cell Proliferation/drug effects
- Chromatography, Thin Layer
- Citrullus/chemistry
- Cucurbitacins/isolation & purification
- Cucurbitacins/pharmacology
- Dose-Response Relationship, Drug
- Fruit
- Hep G2 Cells
- Humans
- Inhibitory Concentration 50
- Liver Neoplasms/pathology
- Magnetic Resonance Spectroscopy
- Male
- Mice
- Molecular Structure
- Plants, Medicinal
- Saudi Arabia
- Spectrometry, Mass, Electrospray Ionization
- Time Factors
- Triterpenes/pharmacology
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Alarif WM, Al-Lihaibi SS, Abdel-Lateff A, Ayyad SEN. New antifungal cholestane and aldehyde derivatives from the red alga Laurencia papillosa. Nat Prod Commun 2011; 6:1821-1824. [PMID: 22312715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
The chloroform/methanol extract of the red alga, Laurencia papillosa, collected from the Red Sea in Saudi Arabia, was found to contain two cholestane derivatives: 3alpha, 6alpha-dihydroxy-5beta-cholestan-12-one (1) and the known, 6beta-hydroxycholest-4-en-3-one (2), which was isolated separately in a pure form for the first time. In addition to these compounds, a new aldehyde derivative, (E)-2-{(E) tridec-2-en-2-yl} heptadec-2-enal (3), was isolated. The structures of all compounds were established based on extensive spectroscopic (1D and 2D NMR, UV, IR) and mass spectrometric studies. All compounds, except 2, were tested for their antifungal activity. Significant activities were associated with 1 and 3 against Candida albicans, Aspergillus fumigatus, and A. flavus.
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Alarif WM, Al-Lihaibi SS, Abdel-Lateff A, Ayyad SEN. New Antifungal Cholestane and Aldehyde Derivatives from the Red Alga Laurencia papillosa. Nat Prod Commun 2011. [DOI: 10.1177/1934578x1100601208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The chloroform/methanol extract of the red alga, Laurencia papillosa, collected from the Red Sea in Saudi Arabia, was found to contain two cholestane derivatives: 3α, 6α-dihydroxy-5β-cholestan-12-one (1) and the known, 6β-hydroxycholest-4-en-3-one (2), which was isolated separately in a pure form for the first time. In addition to these compounds, a new aldehyde derivative, ( E)-2-{( E) tridec-2-en-2-yl} heptadec-2-enal (3), was isolated. The structures of all compounds were established based on extensive spectroscopic (1D and 2D NMR, UV, IR) and mass spectrometric studies. All compounds, except 2, were tested for their antifungal activity. Significant activities were associated with 1 and 3 against Candida albicans, Aspergillus fumigatus, and A. flavus.
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