Summary
We have investigated the effects of acetone and methanol extracts of a medicinal plant, Terminalia arjuna, on the growth of human normal fibroblasts (WI-38), osteosarcoma (U2OS), and glioblastoma (U251) cells in vitro. We found that both extracts at 30 μg and 60 μg/ml concentrations inhibit the growth of transformed cells; the growth of normal cells was least affected. Although the transformed cells appeared to have fragmented nucleus by Hoechst staining, no deoxyribonucleic acid laddering effect was observed. In response to the extract treatment, the tumor suppressor protein, p53, was induced in U2OS but not in U251 and WI-38 cells. A cyclin-dependent kinase inhibitor, p21WAF1, was induced in transformed cells only. The study suggests that the bark extract of medicinal plant, T. arjuna, has components that can induce growth arrest of transformed cells by p53-dependent and-independent pathways.
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Nagpal, A., Meena, L.S., Kaur, S. et al. Growth suppression of human transformed cells by treatment with bark extracts from a medicinal plant, Terminalia arjuna . In Vitro Cell.Dev.Biol.-Animal 36, 544–547 (2000). https://doi.org/10.1290/1071-2690(2000)036<0544:GSOHTC>2.0.CO;2
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DOI: https://doi.org/10.1290/1071-2690(2000)036<0544:GSOHTC>2.0.CO;2