HIV-1 REVERSE TRANSCRIPTASE AND PROTEASE ASSAY OF METHANOLIC EXTRACTS OF ADANSONIA DIGITATA L.

  • Amrish Sharma Faculty of Pharmaceutical Sciences, Jodhpur National University, Jodhpur 342003 (RAJ), India
  • Vinod Rangari Department of Pharmacognosy, Institute of Pharmaceutical Sciences, Guru Ghasidas University, Bilaspur 495009 (CG), India

Abstract

Objective: Anti-HIV activity studies of methanolic extracts of Adansonia digitata L. leaves, root bark and fruit pulp.

Methods: Methanolic extracts of A. digitata were tested for HIV enzyme inhibitory activity against HIV-1 reverse transcriptase (RT) and HIV-1 protease (PR). HIV-1 RT assay was performed using non-radioactive HIV-RT colorimetric ELISA kit while the HIV-1 PR assay was performed using a fluorogenic octapeptide substrate, HIV-FRET (fluorescence resonance energy transfer) and a recombinant HIV-1 protease solution (AnaSpec Inc., USA).

Results: The percentage inhibition of controls and A. digitata leaves, root bark and fruit pulp extracts were calculated relative to uninhibited HIV-1 RT and PR in 2% DMSO. The results of the HIV-1 RT assay indicated 26.5% inhibition by root bark extract (50 µg/ml) and 12.2% inhibition by leaf extract while the fruit pulp extract (100 µg/ml) has shown only 5.9% inhibition as compared to standard Nevirapine (100 nM) 27.5% inhibition.

In the case of HIV-protease assay, leaf extract and fruit pulp extract (50 µg/ml) has shown quite high inhibition (≥ 50%) to the extent of 75% and 74% respectively which is very significant. The root bark extract has shown 35% inhibition.

Conclusion: Methanolic extract of the leaves, root bark and fruit pulp of A. digitata has shown low anti-HIV-1 RT but significant PR activity. HIV-1 RT activity of root bark extract and HIV-1 PR activity of fruit pulp extract indicates the potential of the plant as an anti-HIV agent. 

Keywords: HIV, Adansonia digitata L, Reverse transcriptase, Protease

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How to Cite
Sharma, A., and V. Rangari. “HIV-1 REVERSE TRANSCRIPTASE AND PROTEASE ASSAY OF METHANOLIC EXTRACTS OF ADANSONIA DIGITATA L.”. International Journal of Pharmacy and Pharmaceutical Sciences, Vol. 8, no. 9, Sept. 2016, pp. 124-7, doi:10.22159/ijpps.2016v8i9.12485.
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