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Mol Cell Endocrinol. 2009 Jan 15;297(1-2):18-27. doi: 10.1016/j.mce.2008.08.033. Epub 2008 Sep 7.

Regulation of beta cell replication.

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Department of Biomedical Sciences, University of Copenhagen, Blegdamsvej 3, Building 6.5, DK-2200 Copenhagen N., Denmark.


Beta cell mass, at any given time, is governed by cell differentiation, neogenesis, increased or decreased cell size (cell hypertrophy or atrophy), cell death (apoptosis), and beta cell proliferation. Nutrients, hormones and growth factors coupled with their signalling intermediates have been suggested to play a role in beta cell mass regulation. In addition, genetic mouse model studies have indicated that cyclins and cyclin-dependent kinases that determine cell cycle progression are involved in beta cell replication, and more recently, menin in association with cyclin-dependent kinase inhibitors has been demonstrated to be important in beta cell growth. In this review, we consider and highlight some aspects of cell cycle regulation in relation to beta cell replication. The role of cell cycle regulation in beta cell replication is mostly from studies in rodent models, but whether these findings can be extended to human beta cells remains to be shown.

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