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Diabetes. 2018 Apr;67(4):537-547. doi: 10.2337/dbi17-0040.

New Understanding of β-Cell Heterogeneity and In Situ Islet Function.

Author information

1
Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, CO richard.benninger@ucdenver.edu d.hodson@bham.ac.uk.
2
Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO.
3
Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, U.K. richard.benninger@ucdenver.edu d.hodson@bham.ac.uk.
4
Centre for Endocrinology, Diabetes and Metabolism, Birmingham Health Partners, Birmingham, U.K.
5
Centre of Membrane Proteins and Receptors (COMPARE), University of Birmingham and University of Nottingham, Birmingham, U.K.

Abstract

Insulin-secreting β-cells are heterogeneous in their regulation of hormone release. While long known, recent technological advances and new markers have allowed the identification of novel subpopulations, improving our understanding of the molecular basis for heterogeneity. This includes specific subpopulations with distinct functional characteristics, developmental programs, abilities to proliferate in response to metabolic or developmental cues, and resistance to immune-mediated damage. Importantly, these subpopulations change in disease or aging, including in human disease. Although discovering new β-cell subpopulations has substantially advanced our understanding of islet biology, a point of caution is that these characteristics have often necessarily been identified in single β-cells dissociated from the islet. β-Cells in the islet show extensive communication with each other via gap junctions and with other cell types via diffusible chemical messengers. As such, how these different subpopulations contribute to in situ islet function, including during plasticity, is not well understood. We will discuss recent findings revealing functional β-cell subpopulations in the intact islet, the underlying basis for these identified subpopulations, and how these subpopulations may influence in situ islet function. Furthermore, we will discuss the outlook for emerging technologies to gain further insight into the role of subpopulations in in situ islet function.

PMID:
29559510
PMCID:
PMC5860861
DOI:
10.2337/dbi17-0040
[Indexed for MEDLINE]
Free PMC Article

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