Antiproliferative Activity and Characterization of Metabolites of Aspergillus nidulans : An Endophytic Fungus from Nyctanthes arbor-tristis Linn. Against Three Human Cancer Cell Lines

Medicinal Chemistry
Talea SanaSabira Begum

Abstract

Endophytic fungi are receiving attention as sources of structurally novel bioactive secondary metabolites towards drug discovery from natural products. This study reports the isolation and characterization of secondary metabolites from an endophytic fungus Aspergillus nidulans, associated with Nyctanthes arbor-tristis Linn., a plant which has a traditional use to cure many ailments including cancer. The objective of this study was to evaluate the antiproliferative activity of the metabolites of A. nidulans from N. arbor-tristis on three human cancer cell lines, lung (NCI-H460), breast (MCF-7) and uterine cervix (HeLa), and carry out their characterization. The extracts of the endophytic fungus cultured on potato dextrose agar were subjected to various chromatographic techniques. Structures of pure compounds were determined using spectroscopic techniques. The non-polar constituents were analyzed by GC-MS. Antiproliferative activity was determined by sulforhodamine B (SRB) assay. The extracts and fractions showed moderate to good growth inhibition of the aforementioned human cancer cell lines. The broth extract was most potent (IC50 = 10 ± 3.1 μg/mL and LC50= 95 ± 3.9) against HeLa whereas petroleum ether insoluble fraction of my...Continue Reading

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