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Goldfish adipocytes are pancreatic beta cell-like,glucose-responsive insulin-producing cells |
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| Authors: | Ayelén Melisa Blanco Juan Ignacio Bertucci Suraj Unniappan |
| Affiliation: | 1. Laboratory of Integrative Neuroendocrinology, Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada Laboratorio de Fisioloxía Animal, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía and Centro Singular de Investigación Mariña-ECIMAT, Universidade de Vigo, Campus Universitario Lagoas-Marcosende, Vigo, Spain;2. Laboratory of Integrative Neuroendocrinology, Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada;3. Laboratory of Integrative Neuroendocrinology, Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada |
| Abstract: | Glucose homeostasis plays a key role in maintaining stable physiological conditions, and its dysfunction causes severe chronic health issues including diabetes. In this study, we have characterized goldfish adipocytes as cells with properties similar to that of pancreatic β-cells: they express considerable high levels of preproinsulin mRNAs, possess the necessary machinery for processing preproinsulin (prohormone convertases 1 and 2, carboxypeptidase E and trypsin) and responding to extracellular glucose (glucokinase and the glucose transporters 1, 2, and 4), produce insulin in a glucose-responsive manner and express key transcription factors typically involved in pancreas development (Pdx1, Neurogenin3, Nkx2.2, Pax6, and FOXO1A). These findings reinforce the feature of fish adipocytes as alternate sources of active insulin, holding the promise that they could eventually be developed as transplantable sources of this vital hormone. |
| Keywords: | adipocytes fish glucose insulin β-cell |