4.8 Article

Biemamides A-E, Inhibitors of the TGF-beta Pathway That Block the Epithelial to Mesenchymal Transition

Journal

ORGANIC LETTERS
Volume 20, Issue 18, Pages 5529-5532

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.8b01871

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Funding

  1. University of Wisconsin-Madison School of Pharmacy
  2. NIH through the administration of NIGMS [R01GM104192]
  3. University of Wisconsin Carbone Cancer Center Support Grant [P30 CA014520]
  4. NIH [P41GM103399]
  5. NATIONAL CANCER INSTITUTE [P30CA014520] Funding Source: NIH RePORTER
  6. NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM104192, P41GM103399] Funding Source: NIH RePORTER

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Screening of a marine natural products library for inhibitors of TGF/beta revealed five pyrimidinedione derivatives, biemamides A-E (1-5). The structures were determined by 2D NMR and HRMS experiments; absolute configurations were established by advanced Marfey's analysis and ECD calculations. Biemamides A-E specifically inhibited in vitro TGF-beta induced epithelial to mesenchymal transition in NMuMG cells. Additionally, using Caenorhabditis elegans, selected biemmamides were found to influence in vivo developmental processes related to body size regulation in a dose-dependent manner.

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