Horm Metab Res 2024; 56(04): 286-293
DOI: 10.1055/a-2256-6344
Original Article: Endocrine Research

The Adrenal Gland and Pancreatic Islets – A Beneficial Endocrine Alliance

Undine Schubert
1   Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
2   Paul Langerhans Institute Dresden of the Helmholtz Center Munich at the University Hospital Carl Gustav Carus and Faculty of Medicine of the Technische Universität Dresden, Dresden, Germany
,
Susann Lehmann
1   Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
2   Paul Langerhans Institute Dresden of the Helmholtz Center Munich at the University Hospital Carl Gustav Carus and Faculty of Medicine of the Technische Universität Dresden, Dresden, Germany
,
Janine Schmid
1   Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
2   Paul Langerhans Institute Dresden of the Helmholtz Center Munich at the University Hospital Carl Gustav Carus and Faculty of Medicine of the Technische Universität Dresden, Dresden, Germany
,
Henning Morawietz
1   Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
3   Division of Vascular Endothelium and Microcirculation, Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
,
Stefan R. Bornstein
1   Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
2   Paul Langerhans Institute Dresden of the Helmholtz Center Munich at the University Hospital Carl Gustav Carus and Faculty of Medicine of the Technische Universität Dresden, Dresden, Germany
4   School of Cardiovascular and Metabolic Medicine and Sciences, King's College London, Faculty of Life Sciences & Medicine, London, United Kingdom of Great Britain and Northern Ireland
5   Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH), Zurich, Switzerland
6   Center for Regenerative Therapies, Technische Universität Dresden, Dresden, Germany
7   German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
,
Barbara Ludwig
1   Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
2   Paul Langerhans Institute Dresden of the Helmholtz Center Munich at the University Hospital Carl Gustav Carus and Faculty of Medicine of the Technische Universität Dresden, Dresden, Germany
6   Center for Regenerative Therapies, Technische Universität Dresden, Dresden, Germany
7   German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
› Author Affiliations
Funding Information Deutsche Forschungsgemeinschaft — http://dx.doi.org/10.13039/501100001659; CRC/TR 127

Abstract

Intraportal islet transplantation in patients with type 1 diabetes enables restoration of glucose-regulated insulin secretion. However, several factors hamper a widespread application and long-term success: chronic hypoxia, an inappropriate microenvironment and suppression of regenerative and proliferative potential by high local levels of immunosuppressive agents. Therefore, the identification of alternative and superior transplant sites is of major scientific and clinical interest. Here, we aim to evaluate the adrenal as an alternative transplantation site. The adrenal features a particular microenvironment with extensive vascularization, anti-apoptotic and pro-proliferative, anti-inflammatory and immunosuppressive effects. To validate this novel transplantation site, an in vitro co-culture system of adrenal cells and pancreatic islets was established and viability, islet survival, functional potency and antioxidative defense capacity were evaluated. For in vivo validation, an immune-deficient diabetic mouse model for intra-adrenal islet transplantation was applied. The functional capacity of intra-adrenally grafted islets to reverse diabetes was compared to a standard islet transplant model and measures of engraftment such as vascular integration were evaluated. The presence of adrenal cells positively impacted on cell metabolism and oxidative stress. Following transplantation, we could demonstrate enhanced islet function in comparison to standard models with improved engraftment and superior re-vascularization. This experimental approach allows for novel insights into the interaction of endocrine systems and may open up novel strategies for islet transplantation augmented through the bystander effect of other endocrine cells or the active factors secreted by adrenal cells modulating the microenvironment.



Publication History

Received: 26 January 2024

Accepted after revision: 02 February 2024

Article published online:
12 March 2024

© 2024. Thieme. All rights reserved.

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