In vitro proliferation of adult human beta-cells

Rutti, S. and Sauter, N. S. and Bouzakri, K. and Prazak, R. and Halban, P. A. and Donath, M. Y.. (2012) In vitro proliferation of adult human beta-cells. PLoS ONE, Vol. 7, H. 4 , e35801.

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Official URL: http://edoc.unibas.ch/dok/A6338621

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A decrease in functional beta-cell mass is a key feature of type 2 diabetes. Glucagon-like peptide 1 (GLP-1) analogues induce proliferation of rodent beta-cells. However, the proliferative capacity of human beta-cells and its modulation by GLP-1 analogues remain to be fully investigated. We therefore sought to quantify adult human beta-cell proliferation in vitro and whether this is affected by the GLP-1 analogue liraglutide.Human islets from 7 adult cadaveric organ donors were dispersed into single cells. Beta-cells were purified by FACS. Non-sorted cells and the beta-cell enriched ("beta-cells") population were plated on extracellular matrix from rat (804G) and human bladder carcinoma cells (HTB9) or bovine corneal endothelial ECM (BCEC). Cells were maintained in culture+/-liraglutide for 4 days in the presence of BrdU.Rare human beta-cell proliferation could be observed either in the purified beta-cell population (0.051+/-0.020%; 22 beta-cells proliferating out of 84'283 beta-cells counted) or in the non-sorted cell population (0.055+/-0.011%; 104 proliferating beta-cells out of 232'826 beta-cells counted), independently of the matrix or the culture conditions. Liraglutide increased human beta-cell proliferation on BCEC in the non-sorted cell population (0.082+/-0.034% proliferating beta-cells vs. 0.017+/-0.008% in control, p>0.05).These results indicate that adult human beta-cell proliferation can occur in vitro but remains an extremely rare event with these donors and particular culture conditions. Liraglutide increases beta-cell proliferation only in the non-sorted cell population and only on BCEC. However, it cannot be excluded that human beta-cells may proliferate to a greater extent in situ in response to natural stimuli.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedizin > Department of Biomedicine, University Hospital Basel > Diabetes Research (Donath)
UniBasel Contributors:Donath, Marc
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Public Library of Science
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:31 Aug 2018 06:40
Deposited On:10 Apr 2015 09:13

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