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Adenosine kinase inhibition selectively promotes rodent and porcine islet ?-cell replication.


ABSTRACT: Diabetes is a pathological condition characterized by relative insulin deficiency, persistent hyperglycemia, and, consequently, diffuse micro- and macrovascular disease. One therapeutic strategy is to amplify insulin-secretion capacity by increasing the number of the insulin-producing ? cells without triggering a generalized proliferative response. Here, we present the development of a small-molecule screening platform for the identification of molecules that increase ?-cell replication. Using this platform, we identify a class of compounds [adenosine kinase inhibitors (ADK-Is)] that promote replication of primary ? cells in three species (mouse, rat, and pig). Furthermore, the replication effect of ADK-Is is cell type-selective: treatment of islet cell cultures with ADK-Is increases replication of ? cells but not that of ? cells, PP cells, or fibroblasts. Short-term in vivo treatment with an ADK-I also increases ?-cell replication but not exocrine cell or hepatocyte replication. Therefore, we propose ADK inhibition as a strategy for the treatment of diabetes.

SUBMITTER: Annes JP 

PROVIDER: S-EPMC3309788 | biostudies-literature | 2012 Mar

REPOSITORIES: biostudies-literature

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Adenosine kinase inhibition selectively promotes rodent and porcine islet β-cell replication.

Annes Justin P JP   Ryu Jennifer Hyoje JH   Lam Kelvin K   Carolan Peter J PJ   Utz Katrina K   Hollister-Lock Jennifer J   Arvanites Anthony C AC   Rubin Lee L LL   Weir Gordon G   Melton Douglas A DA  

Proceedings of the National Academy of Sciences of the United States of America 20120215 10


Diabetes is a pathological condition characterized by relative insulin deficiency, persistent hyperglycemia, and, consequently, diffuse micro- and macrovascular disease. One therapeutic strategy is to amplify insulin-secretion capacity by increasing the number of the insulin-producing β cells without triggering a generalized proliferative response. Here, we present the development of a small-molecule screening platform for the identification of molecules that increase β-cell replication. Using t  ...[more]

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