EVALUATION OF ANTI-CML ACTIVITY OF METHANOL AND AQUEOUS EXTRACTS OF BENKARA MALABARICA (LAM.) TIRVENG PLANT LEAVES
Objective: To investigate the phytoconstituents and in vitro cytotoxicity of methanol (MeOH) and aqueous (AQE) extracts of Benkara malabarica (Lam.) Triveng (BM) plant leaves.
Methods: Gas chromatography-mass spectrometry (GC MS) was carried out to disclose the principal phytoconstituents present in MeOH and AQE extracts of BM. In vitro cytotoxicity of BM extracts were determined by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Acridine orange (AO)/ethidium bromide (EB) and 4', 6-diamidino-2-phenylindole (DAPI) staining were performed to visualize morphological changes upon treatment of BM extracts. Fluorescence-activated cell sorting (FACS) was carried out to determine the apoptosis and cell cycle arrestability of BM extracts.
Results: GC MS analysis reported the presence of nine phytoconstituents in MeOH and AQE extracts of BM. The IC50 of BM MeOH, AQE extracts treated K562 cells were 49.78Â±1.697, 15.47Â±1.19 Âµg/ml for 48 h and found to be statistically significant (p<0.001). AO/EB and DAPI staining results anticipated the induction of apoptosis and DNA fragmentation upon treatment of BM extracts. FACS analysis revealed the SubG0 cell populations increased in K562 cells treated by BM MeOH (18.15) and AQE (51.26) extracts.
Conclusion: The results of the present study uncovered that the BM AQE extract was more potent in inhibiting K562 cell proliferation through cell cycle arrest and apoptosis compared to the MeOH extract of BM.Â
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