| Autor: |
Essid R; Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP 901, Hammam-Lif 2050, Tunisia.; University of Tunis-El Manar, Campus Universitaire Farhat Hached, BP-94 Rommana, Tunis 1068, Tunisia., Kefi S; Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP 901, Hammam-Lif 2050, Tunisia.; University of Tunis-El Manar, Campus Universitaire Farhat Hached, BP-94 Rommana, Tunis 1068, Tunisia., Damergi B; Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP 901, Hammam-Lif 2050, Tunisia.; University of Tunis-El Manar, Campus Universitaire Farhat Hached, BP-94 Rommana, Tunis 1068, Tunisia., Abid G; Laboratory of Legumes and Sustainable Agro-Systems, Centre of Biotechnology of Borj Cedria, Hammam-Lif 2050, Tunisia., Fares N; Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP 901, Hammam-Lif 2050, Tunisia., Jallouli S; Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP 901, Hammam-Lif 2050, Tunisia., Abid I; Center of Excellence in Biotechnology Research, College of Applied Medical Sciences, King Saud University, Riyadh 11495, Saudi Arabia., Hussein D; Department of Chemistry, College of Sciences and Health, Cleveland State University, Cleveland, OH 44115, USA., Tabbene O; Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP 901, Hammam-Lif 2050, Tunisia., Limam F; Laboratory of Bioactive Substances, Biotechnology Center of Borj Cedria, BP 901, Hammam-Lif 2050, Tunisia. |
| Abstrakt: |
The present study aimed to evaluate the leishmanicidal potential of the essential oil (EO) of Micromeria ( M. ) nervosa and to investigate its molecular mechanism of action by qPCR. Furthermore, in silicointeraction study of the major M. nervosa EO compounds with the enzyme cytochrome P450 sterol 14α-demethylase (CYP51) was also performed. M. nervosa EO was analyzed by gas chromatography-mass spectrometry (GC-MS). Results showed that α-pinene (26.44%), t -cadinol (26.27%), caryophyllene Oxide (7.73 ± 1.04%), and α-Cadinene (3.79 ± 0.12%) are the major compounds of M. nervosa EO. However, limited antioxidant activity was observed, as this EO was ineffective in neutralizing DPPH free radicals and in inhibiting β-carotene bleaching. Interestingly, it displayed effective leishmanicidal potential against promastigote (IC 50 of 6.79 and 5.25 μg/mL) and amastigote (IC 50 of 8.04 and 7.32 μg/mL) forms of leishmania (L.) infantum and L. major , respectively. Molecular mechanism investigation showed that M. nervosa EO displayed potent inhibition on the thiol regulatory pathway. Furthermore, a docking study of the main components of the EO with cytochrome P450 sterol 14α-demethylase (CYP51) enzyme revealed that t -cadinol exhibited the best binding energy values (-7.5 kcal/mol), followed by α-cadinene (-7.3 kcal/mol) and caryophyllene oxide (-7 kcal/mol). These values were notably higher than that of the conventional drug fluconazole showing weaker binding energy (-6.9 kcal/mol). These results suggest that M. nervosa EO could serve as a potent and promising candidate for the development of alternative antileishmanial agent in the treatment of leishmaniasis. |
