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Acetogenins AND HIF-1

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https://www.readbyqxmd.com/read/26979487/graviola-inhibits-hypoxia-induced-nadph-oxidase-activity-in-prostate-cancer-cells-reducing-their-proliferation-and-clonogenicity
#1
Gagan Deep, Rahul Kumar, Anil K Jain, Deepanshi Dhar, Gati K Panigrahi, Anowar Hussain, Chapla Agarwal, Tamam El-Elimat, Vincent P Sica, Nicholas H Oberlies, Rajesh Agarwal
Prostate cancer (PCa) is the leading malignancy among men. Importantly, this disease is mostly diagnosed at early stages offering a unique chemoprevention opportunity. Therefore, there is an urgent need to identify and target signaling molecules with higher expression/activity in prostate tumors and play critical role in PCa growth and progression. Here we report that NADPH oxidase (NOX) expression is directly associated with PCa progression in TRAMP mice, suggesting NOX as a potential chemoprevention target in controlling PCa...
March 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/20637638/the-marine-sponge-metabolite-mycothiazole-a-novel-prototype-mitochondrial-complex-i-inhibitor
#2
J Brian Morgan, Fakhri Mahdi, Yang Liu, Veena Coothankandaswamy, Mika B Jekabsons, Tyler A Johnson, Koneni V Sashidhara, Phillip Crews, Dale G Nagle, Yu-Dong Zhou
A natural product chemistry-based approach was applied to discover small-molecule inhibitors of hypoxia-inducible factor-1 (HIF-1). A Petrosaspongia mycofijiensis marine sponge extract yielded mycothiazole (1), a solid tumor selective compound with no known mechanism for its cell line-dependent cytotoxic activity. Compound 1 inhibited hypoxic HIF-1 signaling in tumor cells (IC(50) 1nM) that correlated with the suppression of hypoxia-stimulated tumor angiogenesis in vitro. However, 1 exhibited pronounced neurotoxicity in vitro...
August 15, 2010: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/20423107/the-alternative-medicine-pawpaw-and-its-acetogenin-constituents-suppress-tumor-angiogenesis-via-the-hif-1-vegf-pathway
#3
Veena Coothankandaswamy, Yang Liu, Shui-Chun Mao, J Brian Morgan, Fakhri Mahdi, Mika B Jekabsons, Dale G Nagle, Yu-Dong Zhou
Products that contain twig extracts of pawpaw (Asimina triloba) are widely consumed anticancer alternative medicines. Pawpaw crude extract (CE) and purified acetogenins inhibited hypoxia-inducible factor-1 (HIF-1)-mediated hypoxic signaling pathways in tumor cells. In T47D cells, pawpaw CE and the acetogenins 10-hydroxyglaucanetin (1), annonacin (2), and annonacin A (3) inhibited hypoxia-induced HIF-1 activation with IC(50) values of 0.02 microg/mL, 12 nM, 13 nM, and 31 nM, respectively. This inhibition correlates with the suppression of the hypoxic induction of HIF-1 target genes VEGF and GLUT-1...
May 28, 2010: Journal of Natural Products
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