Type 2 diabetes, which affects >0.5 billion people worldwide, results from the inability of beta cells in the pancreatic islets to provide the body with enough insulin to maintain blood glucose levels within the range for a healthy life.
A collaborative study led by Prof. Michele Solimena at the Technische Universität in Dresden as well as the Helmholtz Zentrum München, Dr. Anke M Schulte at Sanofi in Frankfurt, Dr. Mark Ibberson at the Swiss Institute of Bioinformatics (Lausanne) and Prof. Piero Marchetti at University of Pisa as part of the EU-Innovative Medicine Initiative (IMI) research consortium IMIDIA has identified a novel cluster of dysregulated genes in the pancreatic islets of patients with type 2 diabetes. These findings are now published in Diabetologia (the journal of the European Association for the Study of Diabetes [EASD]).
The goal of the IMIDIA consortium, which involved 14 European academic institutions, large pharma companies and biotech firms from 02.2010 until 09.2016, was to identify novel paths for the regeneration, maintenance and protection of insulin-producing pancreatic beta cells as a mean to expedite the discovery of more effective strategies to prevent and treat diabetes.
A main task of the IMIDIA consortium was to define which genes are abnormally expressed in islet beta cells of diabetic subjects compared to islet beta cells of non-diabetic subjects. The altered expression of these genes could account for beta cell failure in diabetes. For the first time, the investigators based their comparative gene expression analysis not only on islets collected from non-diabetic and diabetic organ donors, for which the availability of clinical information is limited, but also on islets from patients undergoing pancreatic surgery.
For the latter subjects in depth medical information was available and the diabetic status could be accurately assessed immediately prior to surgery. This approach enabled therefore the assembly of the largest collection of islets from non-diabetic and diabetic subjects, but also access to islets from prediabetic individuals. The investigators identified in this way nineteen genes the expression of which was altered in islets of both diabetic organ donors as well as diabetic surgical patients, as compared with non-diabetic islets from these cohorts.
Notably, nine of these nineteen genes had never been shown previously to be dysregulated in diabetic islets. On the other hand, the study could not find evidence for any of these genes to be dysregulated in islets of prediabetic subjects, hence suggesting that their altered expression is a consequence rather than the cause of beta cell failure in diabetes. Hence, future studies shall be devoted to discover which genes are dysregulated prior to the demise of the beta cells.
For this purpose, more islets must be collected from prediabetic subjects and this is precisely one of the main tasks pursued by the recently launched EU-IMI consortium RHAPSODY, which includes all four teams leading the present IMIDIA study as partners.
“We believe that our data provides novel molecular insights into what is going wrong in diabetic beta cells and sets new standards for how studies in this field shall be carried out in the future. Ultimately, we are confident that our approach will provide a new view for how exposure of beta cells to nutrient overload wears their function overtime, hence impairing their ability to satisfy the excessive demand of insulin to maintain metabolic homeostasis” says Prof. Michele Solimena, one of the four leading investigators of this study
IMIDIA (“Innovative Medicines Initiative for Diabetes”, www.imidia.org) is a public private consortium funded by the Innovative Medicines Initiative (IMI) and is led by Sanofi, Servier and the University of Lausanne. Leading European experts from 14 academic institutions, eight pharmaceutical research organizations and one biotech company in the area of pancreatic beta cells officially joined their forces within the IMIDIA project to fight diabetes. IMIDIA is working on the generation of novel, patient centric tools, biomarkers, and fundamental knowledge on beta cell organization to accelerate the path to improved diabetes management. It is a unique collaboration of leading research groups in Europe focusing on the necessary innovation tightly coupled with the applications and evaluation of these results to develop new diagnostics, prognostics and therapeutics. Approximately 100 researchers operating in six different scientific work packages focus on novel approaches e.g. imaging biomarkers, systems biology and pathway analysis with the goal of developing patient relevant disease models in vitro and in vivo as well as biomarkers to monitor disease progression and treatment.
IMIDIA participants were AstraZeneca, Boehringer Ingelheim, the French Atomic Energy Commission (CEA), Hannover Medical School (MHH), Imperial College London, Lilly, the National Centre for Scientific Research (CNRS), the National Institute of Health and Medical Research (INSERM), Novartis, Novo Nordisk, Roche, Sanofi, Sarl Endocells, Servier, SIB Swiss Institute of Bioinformatics, Vrije University of Brussels, Technische Universität Dresden, University of Geneva, University of Lausanne, University Paris Diderot and University of Pisa. Additional financial support for this study was provided by the German Center for Diabetes Research (DZD e.V.), which is supported by the German Ministry for Education and Research; the Italian Ministry of Education and Research, and by the Wellcome Trust, the Medical Research Council and the Royal Society in the UK.
Title: Systems biology of the IMIDIA biobank from organ donors and pancreatectomised patients defines a novel transcriptomic signature of islets from individuals with type 2 diabetes.
Solimena et al.2017, Diabetologia, DOI: https://doi.org/10.1007/s00125-017-4500-3
Hidden link for journalists: http://www.diabetologia-journal.org/files/solimena.pdf
Link article on SpringerLink: http://link.springer.com/article/10.1007/s00125-017-4500-3
Prof. Dr. Michele Solimena
Paul Langerhans Institute Dresden of the Helmholtz Center Munich at University Hospital Carl Gustav Carus and Faculty of Medicine TU Dresden
Fetscherstrasse 74 01307 Dresden , Germany
Dr. Anke Schulte
Sanofi-Aventis Deutschland GmbH Diabetes Research
Industriepark Höchst, Building H821, 65926 Frankfurt am Main, Germany
Dr. Mark Ibberson
Vital-IT Group, SIB Swiss Institute of Bioinformatics Quartier Sorge, bâtiment Génopode,
1015 Lausanne, Switzerland
Prof. Dr. Piero Marchetti
Department of Clinical and Experimental Medicine Cisanello University Hospital
University of Pisa Via Paradisa 2 56126 Pisa, Italy
Dr. Frank Möller
Scientific Coordinator Paul Langerhans Institute Dresden
Tel.: +49 (0) 351 796 5634
Kim-Astrid Magister | Technische Universität Dresden
Scientists uncover the role of a protein in production & survival of myelin-forming cells
19.07.2018 | Advanced Science Research Center, GC/CUNY
NYSCF researchers develop novel bioengineering technique for personalized bone grafts
18.07.2018 | New York Stem Cell Foundation
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.
Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
19.07.2018 | Materials Sciences
19.07.2018 | Earth Sciences
19.07.2018 | Life Sciences