scholarly journals Polyphenol Profile and Pharmaceutical Potential of Quercus spp. Bark Extracts

Plants ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 486 ◽  
Author(s):  
Elansary ◽  
Szopa ◽  
Kubica ◽  
Ekiert ◽  
Mattar ◽  
...  

Targeted profiling of polyphenols in trees may reveal valuable sources of natural compounds with major applications in pharmacology and disease control. The current study targeted the profiling of polyphenols using HPLC-DAD in Quercus robur, Q. macrocarpa and Q. acutissima bark extracts. Free radical scavenging of each extract was investigated using antioxidant assays. Antimicrobial activities against a wide spectrum of bacteria and fungi were explored, as well as anticancer activities against different cancer cell lines. The HPLC-DAD analyses revealed the availability of several polyphenols in high amounts, including ellagic acid (in Q. robur) and caffeic acid (in Q. macrocarpa) in all three species. The bioactivity assay revealed high antioxidant activity in Q. robur compared to that of the other species, as well as phenolic standards. The three oak bark extracts showed clear antibacterial activities against most bacteria tested, with the highest antibacterial activities in the extracts of Q. robur. In addition, the three extracts showed higher antibacterial activities against Pseudomonas aeruginosa, Micrococcus flavus, and Escherichia coli compared to that of other bacteria. There were strong antifungal activities against some fungi, such as Aspergillus flavus, Penicillium funiculosum, and Penicillium ochrochloron. There were also noticeable anticancer activities against MCF-7, HeLa, Jurkat, and HT-29 cell lines, with the highest anticancer activity in the extracts of Q. robur. This is the first study that reveals not only novel sources of important polyphenols (e.g. ellagic acid) in Q. robur, Q. macrocarpa and Q. acutissima bark but also their anticancer activities against diverse cancer cell lines.

Author(s):  
Mona S Ellithey ◽  
Hanaa H Ahmed

Objective: The objective of this research was to evaluate for the 1st time the anticancer activities of sarcophytol M (1), alismol (2), alismoxide (5), 7β-acetoxy-24-methylcholesta-5-24(28)-diene-3,19-diol (7), erythro-N-dodecanoyl-docosasphinga-(4E,8E)-dienine (8), and 24 methylcholesta- 5,24(28)-diene-3β,7β,19-triol (9). Compounds were isolated from the soft coral Lithophyton arboreum and tested in liver (HepG2), lung (A549), and breast (MDA) cancer cell line.Methods: Anticancer activities of the compounds were tested using (XTT) 2,3-bis-(2-methoxy-4-nitro- 5-sulfophenyl)-2H-tetrazolium-5-carboxanilide, Na2) in vitro assay in order to estimate the cytotoxicity and to determine the IC50s. The free radical scavenging activity of the compounds were measured by 1,1-diphenyl-2-picryl-hydrazil (DPPH•). All compounds were screened at 100 μg/ml while the most potent active compounds were assayed at lower concentrations.Results: Compounds (7) and (9) showed a strong cytotoxic effect with IC50 of 6.07, 8.5 μg/ml in HepG2, 6.3, 5.5 μg/ml in MDA cells, and 5.2, 9.3 μg/ml in A549 cancer cell lines, respectively. In addition, moderate cytotoxicity was shown by compound (2) (IC50 16.5, 15, and 13 μg/mL) in HepG2, MDA, and A549 cancer cell lines, respectively.Conclusion: The results obtained in this research work indicated a promising potential cytotoxicity of compounds (7) and (9) compared to its safety margins in Vero cells, and the expected cytostatic effect of compound (2) can be used in drug cocktails for the treatment of the major cancer types’ lung, breast, and liver cancer. 


2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Filiz Bakar-Ates ◽  
Berna Hoti ◽  
Ilhan Gurbuz ◽  
Tugba Gunbatan ◽  
Hayri Duman ◽  
...  

AbstractBackgroundThe studies investigating the anticancer activities of natural products have accelerated to produce new solutions in the face of increasing cancer cases. Various Ferulago species are reported to exhibit antioxidant, antiulcer and antimicrobial activities.ObjectiveThis study aimed to evaluate the cytotoxic and apoptotic activities of ethanolic extracts of roots of five Ferulago species on various human cancer cell lines.Material and methodsHPLC analyses were performed by HP Agilent 1,100. The cytotoxicity were determined by MTT assay. The cell cycle arrest and Annexin V binding analyses were performed by Muse Cell Analyzer (Millipore).ResultsAll examined species except F. setifolia inhibited cell viability in PC3 and SW480 cells at 0.01 mg/mL and higher concentrations (p<0.05). Ferulago species inhibited cell cycle at different stages for treated cell lines. The ethanolic extracts of Ferulago species also increased Annexin V binding significantly, resulted in apoptosis (p<0.05%). In this context, F. syriaca showed the highest apoptotic activity in MCF-7 cells by increasing the apoptotic cell population to 23.54 ± 2.10% (p<0.0001).ConclusionThe findings of present study have shown that Ferulago species included in the study have potent anticancer effects and this work have the potential to result in further studies.


Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3218 ◽  
Author(s):  
Jinkui Ouyang ◽  
Ziling Mao ◽  
Hui Guo ◽  
Yunying Xie ◽  
Zehua Cui ◽  
...  

Four new depsidones, mollicellins O–R (compounds 1–4), along with three known compounds 5–7, were isolated from cultures of the fungus Chaetomium sp. Eef-10, an endophyte isolated from Eucalyptus exserta. The structures of the new compounds were elucidated by analysis of the 1D and 2D NMR and HR-ESI-MS spectra. The known compounds were identified by comparison of their spectral data with published values. Compounds 1–7 were evaluated for antibacterial activities against Staphylococcus aureus (sensitive and resistant strains), Escherichia coli, Agrobacterium tumefaciens, Salmonella typhimurium, Pseudomonas lachrymans, Ralstonia solanacearum, Xanthomonas vesicatoria and cytotoxic activities against two human cancer cell lines (HepG2 and Hela). Mollicellin H (6) displayed best antibacterial activity, with IC50 values of 5.14 µg/mL against S. aureus ATCC29213 and 6.21 µg/mL against S. aureus N50, MRSA, respectively. Mollicellin O (1) and mollicellin I (7) also exhibited antibacterial activities against S. aureus ATCC29213 and S. aureus N50. Mollicellin G (5) was active against both two human cancer cell lines, with IC50 values of 19.64 and 13.97 µg/mL while compounds 6 and 7 only showed cytotoxic activity against one cell line. In addition, mollicellin O (1) showed antioxidant activity based on DPPH radical scavenging, with an IC50 value of 71.92 µg/mL.


2013 ◽  
Vol 19 (15) ◽  
pp. 2728-2736 ◽  
Author(s):  
Luca Vanella ◽  
Ignazio Barbagallo ◽  
Rosaria Acquaviva ◽  
Claudia Di Giacomo ◽  
Venera Cardile ◽  
...  

Epigenetics ◽  
2013 ◽  
Vol 8 (12) ◽  
pp. 1355-1372 ◽  
Author(s):  
Francisco Sánchez-Vega ◽  
Valer Gotea ◽  
Hanna M Petrykowska ◽  
Gennady Margolin ◽  
Thomas C Krivak ◽  
...  

Author(s):  
Ateeq Ahmed Al-Zahrani

Several anticancer drugs have been developed from natural products such as plants. Successful experiments in inhibiting the growth of human cancer cell lines using Saudi plants were published over the last three decades. Up to date, there is no Saudi anticancer plants database as a comprehensive source for the interesting data generated from these experiments. Therefore, there was a need for creating a database to collect, organize, search and retrieve such data. As a result, the current paper describes the generation of the Saudi anti-human cancer plants database (SACPD). The database contains most of the reported information about the naturally growing Saudi anticancer plants. SACPD comprises the scientific and local names of 91 plant species that grow naturally in Saudi Arabia. These species belong to 38 different taxonomic families. In Addition, 18 species that represent16 family of medicinal plants and are intensively sold in the local markets in Saudi Arabia were added to the database. The website provides interesting details, including plant part containing the anticancer bioactive compounds, plants locations and cancer/cell type against which they exhibit their anticancer activity. Our survey revealed that breast, liver and leukemia were the most studied cancer cell lines in Saudi Arabia with percentages of 27%, 19% and 15%, respectively. The current SACPD represents a nucleus around which more development efforts can expand to accommodate all future submissions about new Saudi plant species with anticancer activities. SACPD will provide an excellent starting point for researchers and pharmaceutical companies who are interested in developing new anticancer drugs. SACPD is available online at https://teeqrani1.wixsite.com/sapd


2018 ◽  
Vol 4 (5) ◽  
pp. 397-407 ◽  
Author(s):  
Awais Anwar ◽  
Emma Gould ◽  
Ryan Tinson ◽  
Javaid Iqbal ◽  
Chris Hamilton

Abstract Purpose of review This article provides a brief overview of natural phytoprotective products of allium with a special focus on the therapeutic potential of diallyl polysulfanes from garlic, their molecular targets and their fate in the living organisms. A comprehensive overview of antimicrobial and anticancer properties of published literature is presented for the reader to understand the effective concentrations of polysulfanes and their sensitivity towards different human pathogenic microbes, fungi, and cancer cell lines. Recent findings The article finds polysulfanes potentials as new generation novel antibiotics and chemo preventive agent. The effective dose rates of polysulfanes for antimicrobial properties are in the range of 0.5–40 mg/L and for anticancer 20–100 μM. The molecular targets for these redox modulators are mainly cellular thiols as well as inhibition and/or activation of certain cellular proteins in cancer cell lines. Summary Antimicrobial and anticancer activities of polysulfanes published in the literature indicate that with further development, they could be promising candidates for cancer prevention due to their selectivity towards abnormal cells.


Proceedings ◽  
2019 ◽  
Vol 40 (1) ◽  
pp. 40
Author(s):  
Hatice Bekci ◽  
Mustafa Cam ◽  
Ahmet Cumaoglu

Prostate cancer is one of the cause of mortality and morbidity in men. High nutritional quality mushrooms have been consumed as food for a long time and Thanks to their bioactive components, they can be used in many fields such as pharmaceuticals, cosmetic products, dietary supplements and functional food production. The purpose of the research was to evaluate these derivatives against in vitro to obtain novel specific and effective anticancer agents against prostate cancer. In the study, Amanita caesarea, Sparassis crispa, Lepista nuda, Auricularia auricula, Tricholoma terreum and Lentinus tigrinus fungi were used. Anticancer activities of the compounds were evaluated in vitro by using MTT method against PC-3 and DU-143 (androgen-independent human prostate cancer cell lines) prostate cancer cell lines. Cisplatin was used as the positive sensitivity reference standard. The most effective among these fungus species biological activity against PC3 cancer cell line (IC50 = 327.34 µM), against DU-145 (IC50 = 459.19 µM).


2019 ◽  
Vol 55 (10) ◽  
pp. 1394-1397 ◽  
Author(s):  
Natalia Curado ◽  
Guillaume Dewaele-Le Roi ◽  
Sophie Poty ◽  
Jason S. Lewis ◽  
Maria Contel

Trojan horse based design affords antibody gold conjugates containing linkers that display HER2-mediated toxicity in breast cancer cell lines.


PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4839 ◽  
Author(s):  
Wafa M. Al-Madhagi ◽  
Najihah Mohd Hashim ◽  
Nasser A. Awad Ali ◽  
Abeer A. Alhadi ◽  
Siti Nadiah Abdul Halim ◽  
...  

Background Peperomia belongs to the family of Piperaceae. It has different uses in folk medicine and contains rare compounds that have led to increased interest in this genus. Peperomia blanda (Jacq.) Kunth is used as an injury disinfectant by Yemeni people. In addition, the majority of Yemen’s population still depend on the traditional remedy for serious diseases such as cancer, inflammation and infection. Currently, there is a deficiency of scientific evidence with regards to the medicinal plants from Yemen. Therefore, this study was performed to assess the chemical profile and in vitro antioxidant and cytotoxic activities of P. blanda. Methods Chemical profiling of P. blanda was carried out using gas chromatography mass spectrometry (GCMS) followed by isolation of bioactive compounds by column chromatography. DPPH• and FRAP assays were used to evaluate antioxidant activity and the MTT assay was performed to estimate the cytotoxicity activity against three cancer cell lines, namely MCF-7, HL-60 and WEHI-3, and three normal cell lines, MCF10A, WRL-68 and HDFa. Results X-ray crystallographic data for peperomin A is reported for the first time here and N,N′-diphenethyloxamide was isolated for the first time from Peperomia blanda. Methanol and dichloromethane extracts showed high radical scavenging activity with an IC50 of 36.81 ± 0.09 µg/mL, followed by the dichloromethane extract at 61.78 ± 0.02 µg/mL, whereas the weak ferric reducing activity of P. blanda extracts ranging from 162.2 ± 0.80 to 381.5 ± 1.31 µg/mL were recorded. In addition, petroleum ether crude extract exhibited the highest cytotoxic activity against all the tested cancer cell lines with IC50 values of 9.54 ± 0.30, 4.30 ± 0.90 and 5.39 ± 0.34 µg/mL, respectively. Peperomin A and the isolated mixture of phytosterol (stigmasterol and β-sitosterol) exhibited cytotoxic activity against MCF-7 and WE-HI cell lines with an IC50 of (5.58 ± 0.47, 4.62 ± 0.03 µg/mL) and (8.94 ± 0.05, 9.84 ± 0.61 µg/mL), respectively, compared to a standard drug, taxol, that has IC50 values of 3.56 ± 0.34 and 1.90 ± 0.9 µg/mL, respectively. Conclusion The activities of P. blanda extracts and isolated compounds recorded in this study underlines the potential that makes this plant a valuable source for further study on anticancer and antioxidant activities.


Sign in / Sign up

Export Citation Format

Share Document