| Furano-sesquiterpene from soft coral, Sinularia kavarittiensis: induces apoptosis via the mitochondrial-mediated caspase-dependent pathway in THP-1, leukemia cell line. | |
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MedLine Citation:
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PMID: 19283488 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Bioassay directed fractionation and purification led to the successful isolation of a furano sesquiterpene, Methyl 5-[(1E,5E)-2,6-Dimethyl octa-1,5,7-trienyl] furan-3-carboxylate (MDTFC), a bioactive component from a soft coral, Sinularia kavarittiensis. Its structure was determined by analyzing (1)H, (13)C NMR and FAB-MS. The results show that MDTFC could efficiently and selectively inhibit the proliferation of several human cancer cell lines. Among all the cell lines, THP-1 was found to be most sensitive (IC(50) 29.59 microM), whereas the peripheral blood mononuclear cells were least effected (IC(50) 464.16 microM). The molecular mechanism of MDTFC mediated apoptosis was investigated for the first time. Induction of apoptosis in THP-1 cells was characterized by cell membrane blebbing, chromatin condensation, DNA fragmentation, and decrease in level of pro-caspases 3, 9 and increase in Bax/Bcl-2 ratio. Our results were further strengthened through cleavage of poly (ADP-ribose) polymerase, reduction of mitochondrial membrane potential (Psim) and cytosolic release of cytochrome c, which are key events during apoptosis. Moreover, phosphatidyl serine exposure and appearance of sub-G1 peak also demonstrated cell death, when analyzed by flow cytometry. DNA fragmentation was prevented moderately when pretreated with caspase-9 inhibitor (Z-LEHD-FMK) and largely with caspase-3 inhibitor (Z-DEVD-FMK). In summary, MDTFC mediated apoptosis involves mitochondria-dependent pathway and the present compound of marine origin might have a therapeutic value against human cancer cell lines and especially on leukemia cells. |
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Authors:
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S K Arepalli; V Sridhar; J Venkateswara Rao; P Kavin Kennady; Y Venkateswarlu |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Apoptosis : an international journal on programmed cell death Volume: 14 ISSN: 1573-675X ISO Abbreviation: Apoptosis Publication Date: 2009 May |
Date Detail:
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Created Date: 2009-05-15 Completed Date: 2009-08-05 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9712129 Medline TA: Apoptosis Country: United States |
Other Details:
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Languages: eng Pagination: 729-40 Citation Subset: IM |
Affiliation:
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Toxicology Unit, Biology Division, Indian Institute of Chemical Technology, Hyderabad, 500 607, India. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Anthozoa / chemistry* Apoptosis / drug effects* Caspases / metabolism* Cell Line, Tumor Cell Proliferation / drug effects Cell Shape / drug effects Colorimetry DNA Fragmentation / drug effects Drug Screening Assays, Antitumor Flow Cytometry Humans Leukemia / enzymology*, pathology Membrane Potential, Mitochondrial / drug effects Mitochondria / drug effects*, enzymology* Neoplasm Proteins / metabolism Propidium / metabolism Sesquiterpenes / chemistry, isolation & purification, pharmacology* |
| Chemical | |
Reg. No./Substance:
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0/Neoplasm Proteins; 0/Sesquiterpenes; 36015-30-2/Propidium; EC 3.4.22.-/Caspases |
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