Bioactivity Guided Investigation of Caryota mitis & Caryota urens Chemopreventive Activity via In Vitro and In Silico Studies
Hamed, A., Abou Zeid, A., El-Rafie, H., Kandil, Z., El-Akad, R., Farag, M. (2020). Bioactivity Guided Investigation of Caryota mitis & Caryota urens Chemopreventive Activity via In Vitro and In Silico Studies. EKB Journal Management System, 63(12), 5071-5086. doi: 10.21608/ejchem.2020.30737.2655
Ahmed Ragab Hamed; Aisha H. Abou Zeid; Hanaa El-Rafie; Zeinab A. Kandil; Radwa H. El-Akad; Mohamed Farag. "Bioactivity Guided Investigation of Caryota mitis & Caryota urens Chemopreventive Activity via In Vitro and In Silico Studies". EKB Journal Management System, 63, 12, 2020, 5071-5086. doi: 10.21608/ejchem.2020.30737.2655
Hamed, A., Abou Zeid, A., El-Rafie, H., Kandil, Z., El-Akad, R., Farag, M. (2020). 'Bioactivity Guided Investigation of Caryota mitis & Caryota urens Chemopreventive Activity via In Vitro and In Silico Studies', EKB Journal Management System, 63(12), pp. 5071-5086. doi: 10.21608/ejchem.2020.30737.2655
Hamed, A., Abou Zeid, A., El-Rafie, H., Kandil, Z., El-Akad, R., Farag, M. Bioactivity Guided Investigation of Caryota mitis & Caryota urens Chemopreventive Activity via In Vitro and In Silico Studies. EKB Journal Management System, 2020; 63(12): 5071-5086. doi: 10.21608/ejchem.2020.30737.2655

Bioactivity Guided Investigation of Caryota mitis & Caryota urens Chemopreventive Activity via In Vitro and In Silico Studies

Egyptian Journal of Chemistry
Article 35, Volume 63, Issue 12, December 2020, Page 5071-5086  XML PDF (2.02 MB)
Document Type: Original Article
DOI: 10.21608/ejchem.2020.30737.2655
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Authors
Ahmed Ragab Hamedorcid 1; Aisha H. Abou Zeidorcid 2; Hanaa El-Rafie email orcid 3; Zeinab A. Kandilorcid 4; Radwa H. El-Akadorcid 5; Mohamed Faragorcid 6
1Department of Phytochemistry, Pharmaceutical and Drug Industries Research Division.
2Pharmacognosy Department, Pharmaceutical and Drug Industry, National Research Center
3Pharmacognosy department, Pharmaceutical and drug industry, National Research center
4Pharmacognosy Dept., Faculty of Pharmacy-Cairo University, Cairo, Egypt
5Pharmacognosy department- National Research Center- Cairo, Egypt
6Faculty of pharmacy, Cairo university
Abstract
The study highlights for the first time the potential role of Caryota mitis and Caryota urens (family Arecaceae) in cancer chemoprevention as NQO1 enzyme inducers. Among the tested leaf extracts of different solvent polarities, C. urens petroleum ether leaf extract showed the most potent induction of NQO1 enzyme activity (4.79 times to vehicle control) via DCPIP assay and a significant difference was observed at concentration 25 μg/mL via NQO1 western blot analysis. First comparative GC/MS analysis of both species' petroleum ether leaf extracts was conducted to reveal for 35 vs 34 compounds in C. mitis and C. urens unsaponifiable matter, respectively, and 29 vs 15 fatty acids as methyl esters, respectively. Isolation attempts from the active C. urens extract resulted in the identification of five compounds i.e. oleanolic acid (T1), ursolic acid (T2), α-tocopherol (T3), palmitic and stearic acids (T4 & T5) using different spectroscopic techniques; where T1 and T3 are first time to be identified in C. urens. Assessment of the isolated compounds' chemopreventive activity was conducted via in silico molecular modeling against KEAP-1 –Nrf2 complex involved in of NQO1 where T1, T2 and T3 showed promising docking score of -7.7, -7.9 and -7.05 kcal/mol, respectively, compared to -8.2 kcal/mol for 4'-bromoflavone as a positive control.
Keywords
Caryota; NQO1 inducers; Nrf2/Keap-1 docking; chemoprevention; GC/MS; triterpenes
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