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A natural compound, methyl angolensate, induces mitochondrial pathway of apoptosis in Daudi cells

Chiruvella, Kishore K and Raghavan, Sathees C (2011) A natural compound, methyl angolensate, induces mitochondrial pathway of apoptosis in Daudi cells. In: Investigational New Drugs, 29 (4). pp. 583-592.

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Abstract

Natural products discovered from medicinal plants have played an important role in the treatment of cancer. In an effort to identify novel small molecules which can affect the proliferation of lymphoma cells, we tested methyl angolensate (MA), a plant derived tetranortriterpenoid, purified from the crude extract of the root callus of Soymida febrifuga commonly known as Indian red wood tree. We have tested MA for its cytotoxic properties on Burkitt's lymphoma cell lines, using various cellular assays. We observed that MA induces cytotoxicity in Daudi cells in a dose-dependent manner using trypan blue, MTT and LDH assays. We find that the treatment with MA led to activation of DNA double-strand break repair proteins including KU70 and KU80, suggesting the activation of nonhomologous DNA end joining pathway in surviving cells. Further, we find that methyl angolensate could induce apoptosis by cell cycle analysis, annexin V-FITC staining, DNA fragmentation and PARP cleavage. Besides, MA treatment led to reactive oxygen species generation and loss of mitochondrial transmembrane potential. These results suggest the activation of mitochondrial pathway of apoptosis. Hence, we identify MA as a potential chemotherapeutic agent against Daudi cells.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Springer.
Keywords: Cytotoxicity;Chemotherapy;Burkitt's lymphoma;Double-strand breaks;DNA damage;Antitumor drugs;Cancer therapeutics
Department/Centre: Division of Biological Sciences > Biochemistry
Depositing User: Id for Latest eprints
Date Deposited: 15 Jun 2011 05:39
Last Modified: 15 Jun 2011 05:39
URI: http://eprints.iisc.ac.in/id/eprint/38247

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