Journal
DIABETES OBESITY & METABOLISM
Volume 10, Issue -, Pages 128-135Publisher
WILEY
DOI: 10.1111/j.1463-1326.2008.00948.x
Keywords
beta-cells; islets; lineage tracing; proliferation; regeneration; transgenic mice
Categories
Funding
- Juvenile Diabetes Research Foundation (JDRF)
- beta-Cell Biology Consortium (NIH-BCBC)
- BetaCellTherapy consortium (JDRF/EUropean Union)
- Israel Science Foundation
- Israel Cancer Resarch Fund
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Recent Studies have revealed a surprising plasticity of pancreatic P-cell mass. beta-cell mass is now recognized to increase and decrease in response to physiological demand, for example during pregnancy and in insulin-resistant states. Moreover, we and others have shown that mice recover spontaneously from diabetes induced by killing of 70-80% of beta-cells, by P-cell regeneration. The major cellular source for new P-cells following specific ablation, as well as during normal homeostatic maintenance of adult beta-cells, is proliferation of differentiated beta-cells. More recently, it was shown that one form of severe pancreatic. injury, ligation of the main pancreatic duct, activates a population of embryonic-type endocrine progenitor cells, which can differentiate into new P-cells. The molecular triggers for enhanced beta-cell proliferation during recovery from diabetes and for activation of embryonic-type endocrine progenitors remain unknown and represent key challenges for future research. Taken together, recent data suggest that regenerative therapy for diabetes may he a realistic goal.
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