Abstract
A newly isolated indigenous strain BN10 identified as Pseudomonas aeruginosa was found to produce glycolipid (i.e., rhamnolipid-type) biosurfactants. Two representative rhamnolipidic fractions, RL-1 and RL-2, were separated on silica gel columns and their chemical structure was elucidated by a combination of nuclear magnetic resonance and mass spectroscopy. Subsequently, their cytotoxic effect on cancer cell lines HL-60, BV-173, SKW-3, and JMSU-1 was investigated. RL-1 was superior in terms of potency, causing 50 % inhibition of cellular viability at lower concentrations, as compared to RL-2. Furthermore, the results from fluorescent staining analysis demonstrated that RL-1 inhibited proliferation of BV-173 pre-B human leukemia cells by induction of apoptotic cell death. These findings suggest that RL-1 could be of potential for application in biomedicine as a new and promising therapeutic agent.
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This work was financially supported by the Ministry of Education, Youth and Science of Bulgaria, Project BG051PO001-3.3-05/0001 “Science & Business”, Operational Programme “Human Resources Development”.
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Christova, N., Tuleva, B., Kril, A. et al. Chemical Structure and In Vitro Antitumor Activity of Rhamnolipids from Pseudomonas aeruginosa BN10. Appl Biochem Biotechnol 170, 676–689 (2013). https://doi.org/10.1007/s12010-013-0225-z
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DOI: https://doi.org/10.1007/s12010-013-0225-z