Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 108, Issue 48, Pages 19264-19269Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1113081108
Keywords
progenitor; Notch-signaling; development; embryogenesis
Categories
Funding
- Juvenile Diabetes Research Foundation [1-2007-145]
- National Institutes of Health [P01CA134292, R01DK080730, R41DK082060, R01CA122814]
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Pancreatic beta-cells are an essential source of insulin and their destruction because of autoimmunity causes type I diabetes. We conducted a chemical screen to identify compounds that would induce the differentiation of insulin-producing beta-cells in vivo. To do this screen, we brought together the use of transgenic zebrafish as a model of beta-cell differentiation, a unique multiwell plate that allows easy visualization of lateral views of swimming larval fish and a library of clinical drugs. We identified six hits that can induce precocious differentiation of secondary islets in larval zebrafish. Three of these six hits were known drugs with a considerable background of published data on mechanism of action. Using pharmacological approaches, we have identified and characterized two unique pathways in beta-cell differentiation in the zebrafish, including down-regulation of GTP production and retinoic acid biosynthesis.
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