Abstract
Marine sediment samples from Visakhapatnam coast of Bay of Bengal, India, were investigated as a source of actinomycetes to screen for the production of antibiotics and cytotoxic compounds. Actinomycete strain DVR D4 with interesting bioactivity profile was isolated during our systematic study of marine actinomycetes. Based on biochemical properties and 16S rDNA analysis the isolate DVR D4 was identified as a strain of Amycolatopsis alba. A solvent extraction followed by a chromatographic purification helped to isolate a cytotoxic compound, which was identified as 1(10-aminodecyl) Pyridinium salt antibiotic, on the basis of spectral data. The compound showed potent cytotoxic activity against cancer cell lines of cervix (HeLa), breast (MCF-7) and brain (U87MG) in vitro and also exhibited antibacterial activities against Gram-positive and Gram-negative bacteria.
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