Abstract
Glucose is a major source of energy in animals. Maintaining blood glucose levels within a physiological range is important for facilitating glucose uptake by cells, as required for optimal functioning. Glucose homeostasis relies on multiple glucose-sensing cells in the body that constantly monitor blood glucose levels and respond accordingly to adjust its glycemia. These include not only pancreatic β-cells and α-cells that secrete insulin and glucagon, but also central and peripheral neurons regulating pancreatic endocrine function. Different types of cells respond distinctively to changes in blood glucose levels, and the mechanisms involved in glucose sensing are diverse. Notably, recent studies have challenged the currently held views regarding glucose-sensing mechanisms. Furthermore, peripheral and central glucose-sensing cells appear to work in concert to control blood glucose level and maintain glucose and energy homeostasis in organisms. In this review, we summarize the established concepts and recent advances in the understanding of cellular and systemic mechanisms that regulate glucose sensing and its homeostasis.
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Acknowledgments
We thank Dr. Greg S. B. Suh (KAIST) for helpful comments and suggestions. This work was supported by the National Research Foundation of Korea (NRF Grants 2019R1A2C2005161 to J.-W. S; 2010-0027941 and 2017R1A2B2010186 to W.-K. H) funded by the Korean Ministry of Science and ICT.
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Sohn, JW., Ho, WK. Cellular and systemic mechanisms for glucose sensing and homeostasis. Pflugers Arch - Eur J Physiol 472, 1547–1561 (2020). https://doi.org/10.1007/s00424-020-02466-2
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DOI: https://doi.org/10.1007/s00424-020-02466-2