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- W1512436727 abstract "A better understanding of the metabolic adaptations of the vascular endothelial cells (EC) that mediate tumor vascularization would help the development of new drugs and therapies. Novel roles in cell survival and metabolic adaptation to hypoxia have been ascribed to the microsomal glucose‐6‐phosphate translocase (G6PT). While antitumorigenic properties of G6PT inhibitors such as chlorogenic acid (CHL) have been documented, those of the G6PT inhibitor and semi‐synthetic analog AD4‐015 of the polyketide mumbaistatin are not understood. In the present study, we evaluated the in vitro antiangiogenic impact of AD4‐015 on human brain microvascular endothelial cells (HBMEC), which play an essential role as structural and functional components in tumor angiogenesis. We found that in vitro HBMEC migration and tubulogenesis were reduced by AD4‐015 but not by CHL. The mumbaistatin analog significantly inhibited the phorbol 12‐myristate 13‐acetate (PMA)‐induced matrix‐metalloproteinase (MMP)‐9 secretion and gene expression as assessed by zymography and RT‐PCR. PMA‐mediated cell signaling leading to cyclooxygenase (COX)‐2 expression and IκB downregulation was also inhibited, further confirming AD4‐015 as a cell signaling inhibitor in tumor promoting conditions. G6PT functions may therefore account for the metabolic flexibility that enables EC‐mediated neovascularization. This process could be specifically targeted within the vasculature of developing brain tumors by G6PT inhibitors." @default.
- W1512436727 created "2016-06-24" @default.
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- W1512436727 date "2010-03-24" @default.
- W1512436727 modified "2023-10-17" @default.
- W1512436727 title "Inhibition of Tubulogenesis and of Carcinogen-mediated Signaling in Brain Endothelial Cells Highlight the Antiangiogenic Properties of a Mumbaistatin Analog" @default.
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- W1512436727 doi "https://doi.org/10.1111/j.1747-0285.2010.00961.x" @default.
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