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Chapter category: Endocrine

b Cell Proliferation as the Major Determinant of Pancreatic b Cell Mass

This chapter appears in the following book:

Islet Cell Growth Factors

Edited by: Rohit N. Kulkarni
ISBN: TBA
» Get more information about this book at landesbioscience.com «

Chapter authors:
Zvi Granot and Yuval Dor


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A fundamental problem in pancreas biology concerns the cellular origins of adult pancreatic b cells. Identifying the cells that give rise to new b cells will have important implications for the design of future regenerative therapies for diabetes. Numerous studies have suggested that b cells are generated in vivo from a pool of stem or progenitor cells residing in pancreatic ducts, inside islets or in the bone marrow. More recent experiments have challenged this model, and indicated that new adult b cells derive mainly by self-proliferation of existing, terminally differentiated b cells. In this chapter we summarize the evidence regarding the critical contribution of b cell proliferation, and discuss some implications of this view for the study of pancreas dynamics and diabetes.

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