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  • 1
    Publication Date: 2012-07-17
    Description: Impairment of the circadian clock has been associated with numerous disorders, including metabolic disease. Although small molecules that modulate clock function might offer therapeutic approaches to such diseases, only a few compounds have been identified that selectively target core clock proteins. From an unbiased cell-based circadian phenotypic screen, we identified KL001, a small molecule that specifically interacts with cryptochrome (CRY). KL001 prevented ubiquitin-dependent degradation of CRY, resulting in lengthening of the circadian period. In combination with mathematical modeling, our studies using KL001 revealed that CRY1 and CRY2 share a similar functional role in the period regulation. Furthermore, KL001-mediated CRY stabilization inhibited glucagon-induced gluconeogenesis in primary hepatocytes. KL001 thus provides a tool to study the regulation of CRY-dependent physiology and aid development of clock-based therapeutics of diabetes.〈br /〉〈br /〉〈a href="" target="_blank"〉〈img src="" border="0"〉〈/a〉   〈a href="" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hirota, Tsuyoshi -- Lee, Jae Wook -- St John, Peter C -- Sawa, Mariko -- Iwaisako, Keiko -- Noguchi, Takako -- Pongsawakul, Pagkapol Y -- Sonntag, Tim -- Welsh, David K -- Brenner, David A -- Doyle, Francis J 3rd -- Schultz, Peter G -- Kay, Steve A -- GM074868/GM/NIGMS NIH HHS/ -- GM085764/GM/NIGMS NIH HHS/ -- GM096873/GM/NIGMS NIH HHS/ -- MH051573/MH/NIMH NIH HHS/ -- MH082945/MH/NIMH NIH HHS/ -- P50 GM085764/GM/NIGMS NIH HHS/ -- R01 GM041804/GM/NIGMS NIH HHS/ -- R01 GM074868/GM/NIGMS NIH HHS/ -- R01 GM096873/GM/NIGMS NIH HHS/ -- R01 MH051573/MH/NIMH NIH HHS/ -- R01 MH082945/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2012 Aug 31;337(6098):1094-7. doi: 10.1126/science.1223710. Epub 2012 Jul 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biological Sciences, University of California San Diego, La Jolla, CA 92093, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Amino Acid Sequence ; Animals ; Carbazoles/chemistry/isolation & purification/*pharmacology ; Cell Line, Tumor ; Circadian Clocks/*drug effects ; Cryptochromes/*agonists/metabolism ; Gluconeogenesis/drug effects/genetics ; Glucose-6-Phosphatase/genetics ; HEK293 Cells ; Hepatocytes/drug effects/metabolism ; Humans ; Liver/cytology/drug effects/metabolism ; Mice ; Molecular Sequence Data ; Phosphoenolpyruvate Carboxykinase (GTP)/genetics ; Protein Stability/drug effects ; Proteolysis/drug effects ; *Small Molecule Libraries ; Sulfonamides/chemistry/isolation & purification/*pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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