Journal
NATURAL PRODUCT RESEARCH
Volume 31, Issue 6, Pages 632-638Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14786419.2016.1214830
Keywords
Glioma; Juglone; TMZ; naphthoquinones
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Funding
- University of Padova
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Malignant gliomas are aggressive and life-threatening tumours that still show a poor prognosis: the current therapeutic approach based on surgical resection and chemotherapy combined with radiotherapy does not provide a satisfactory chance of long-term survival to patients. Natural bioactive compounds represent a precious source of molecules with antiproliferative activity, potentially effective also against glioma cells. Among these, Juglone is a known allelopathic compound extracted from the eastern black walnut (Juglans nigra) whose antimitotic effect has been extensively described in mammalian cells. We investigated the antiproliferative effect of a synthetic derivative of this natural compound, 2-(2,4-dihydroxyphenyl)-8-hydroxy-1,4-naphthoquinone (DiNAF), in rat glioma cells. We compared this molecule and its effect with the natural reference compound and with newly synthesised derivatives to build a preliminar structure-activity relationship. Biological assays and NMR-based redox experiments confirmed that DiNAF is a promising lead and supported the hypothesis of a redox mechanism underlying its cytotoxic activity. [GRAPHICS] .
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