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Development of 1,3,6-Tribenzoylated Glucose as an Antiausterity Agent Targeting Tumor Microenvironment
Akira Takagi1, Kazuki Usuguchi1, Ippei Takashima1
1Kobe Pharmaceutical University.
Abstract:
One aspect of cancer-specific environments, nutrient starvation, is a factor in cancer cell resistance to treatment with chemotherapeutic agents and development of malignancy. Our newly synthesized novel glucose derivative β-1,3,6-O-tribenzoyl-D-glucose (3) showed preferential cytotoxicity against PANC-1 human pancreatic cancer cells as well as HT-29 human colon cancer cells depending on low nutritional environment. The amount of ester functionalization in 3 is important. None of the mono- and tetrabenzoylated D-glucose analog showed cytotoxicity, and dibenzoylated D-glucoses showed only limited cytotoxicity. Fluorescence imaging with double staining of Hoechst 33342 and propidium iodide clearly showed that 3 actually causes cell death in a nutrient deprived medium. We thus demonstrate that an inexpensive natural product, D-glucose, is a unique template for attachment of acyl moieties to target tolerance to nutrient starvation. We expect these compounds will lead to additional compounds to treat refractory cancers by diversification of chemically modified glucose.
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