1
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Päth G, Perakakis N, Mantzoros CS, Seufert J. PCSK9 inhibition and cholesterol homeostasis in insulin producing β-cells. Lipids Health Dis 2022; 21:138. [PMID: 36527064 PMCID: PMC9756761 DOI: 10.1186/s12944-022-01751-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022] Open
Abstract
Low-density lipoprotein cholesterol (LDL-C) plays a central role in the pathology of atherosclerotic cardiovascular disease. For decades, the gold standard for LDL-C lowering have been statins, although these drugs carry a moderate risk for the development of new-onset diabetes. The inhibitors of proprotein convertase subtilisin/kexin type 9 (PCSK9) have emerged in the last years as potential alternatives to statins due to their high efficiency and safety without indications for a diabetes risk so far. Both approaches finally eliminate LDL-C from bloodstream by upregulation of LDL receptor surface expression. Due to their low antioxidant capacity, insulin producing pancreatic β-cells are sensitive to increased lipid oxidation and related generation of reactive oxygen species. Thus, PCSK9 inhibition has been argued to promote diabetes like statins. Potentially, the remaining patients at risk will be identified in the future. Otherwise, there is increasing evidence that loss of circulating PCSK9 does not worsen glycaemia since it is compensated by local PCSK9 expression in β-cells and other islet cells. This review explores the situation in β-cells. We evaluated the relevant biology of PCSK9 and the effects of its functional loss in rodent knockout models, carriers of LDL-lowering gene variants and PCSK9 inhibitor-treated patients.
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Affiliation(s)
- Günter Päth
- grid.5963.9Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Germany, Hugstetter Str. 55, Freiburg, Germany
| | - Nikolaos Perakakis
- grid.4488.00000 0001 2111 7257Division of Metabolic and Vascular Medicine, Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany ,grid.38142.3c000000041936754XDivision of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA USA
| | - Christos S. Mantzoros
- grid.38142.3c000000041936754XDivision of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA USA ,grid.410370.10000 0004 4657 1992Section of Endocrinology, VA Boston Healthcare System, MA Jamaica Plain, USA
| | - Jochen Seufert
- grid.5963.9Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Germany, Hugstetter Str. 55, Freiburg, Germany
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2
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Päth G, Mehana AE, Pilz IH, Alt M, Baumann J, Sommerer I, Hoffmeister A, Seufert J. NUPR1 preserves insulin secretion of pancreatic β-cells during inflammatory stress by multiple low-dose streptozotocin and high-fat diet. Am J Physiol Endocrinol Metab 2020; 319:E338-E344. [PMID: 32574111 PMCID: PMC7473916 DOI: 10.1152/ajpendo.00088.2020] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Obesity is associated with dyslipidemia and subclinical inflammation that promotes metabolic disturbances including insulin resistance and pancreatic β-cell dysfunction. The nuclear protein, transcriptional regulator 1 (NUPR1) responds to cellular stresses and features tissue protective properties. To characterize the role of NUPR1 in endocrine pancreatic islets during inflammatory stress, we generated transgenic mice with β-cell-specific Nupr1 overexpression (βNUPR1). Under normal conditions, βNUPR1 mice did not differ from wild type (WT) littermates and display normal glucose homeostasis and β-cell mass. For induction of inflammatory conditions, mice were treated with multiple low-dose streptozotocin (mld-STZ) and/or fed a high-fat diet (HFD). All treatments significantly worsened glycaemia in WT mice, while βNUPR1 mice substantially preserved insulin secretion and glucose tolerance. HFD increased β-cell mass in all animals, with βNUPR1 mice tending to show higher values. The improved outcome of βNUPR1 mice was accompanied by decreased NF-κB activation and lymphocyte infiltration in response to mld-STZ. In vitro, isolated βNUPR1 islets preserved insulin secretion and content with insignificantly low apoptosis during culture stress and IL-1β exposure. These findings suggest that NUPR1 plays a vital role in the protection of β-cells from apoptosis, related degradation of insulin storages and subsequent secretion during inflammatory and obesity-related tissue stress.
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Affiliation(s)
- Günter Päth
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Amir E Mehana
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Science, Department of Zoology, Suez Canal University, Ismailia, Egypt
| | - Ingo H Pilz
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Marcus Alt
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Johannes Baumann
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Ines Sommerer
- Division of Gastroenterology and Rheumatology, Neurology and Dermatology, Department of Medicine, University of Leipzig, Germany
| | - Albrecht Hoffmeister
- Division of Gastroenterology and Rheumatology, Neurology and Dermatology, Department of Medicine, University of Leipzig, Germany
| | - Jochen Seufert
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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3
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Potasso L, Perakakis N, Lamprinou A, Polyzou E, Kassanos D, Peter A, Päth G, Seufert J, Laubner K. Clinical Impact of the TCF7L2 Gene rs7903146 Type 2 Diabetes
Mellitus Risk Polymorphism in Women with Gestational Diabetes Mellitus: Impaired
Glycemic Control and Increased Need of Insulin Therapy. Exp Clin Endocrinol Diabetes 2019; 128:663-666. [DOI: 10.1055/a-1008-9223] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Abstract
Background The single nucleotide polymorphism in TCF7L2 rs7903146 is
associated with an increased risk of type 2 diabetes mellitus and gestational
diabetes mellitus. Mechanisms by which this mutation acts, and its impact on the
clinical course of the diseases remain unclear. Here we investigated the
clinical impact of the T risk allele in women with gestational diabetes
mellitus.
Methods We genotyped the C/T polymorphism in 164 Caucasian women
with GDM (German n=114; Greek n=50). The impact of the T allele
on the results of the 75g oral-glucose-tolerance-test, and on the required
therapy (diet/lifestyle or insulin) was investigated.
Results During oral-glucose-tolerance-test, women harboring the T allele
displayed significantly higher glucose values at 60 min (p=0.034) and
were more likely to require insulin therapy even after adjusting for
confounders, such as BMI and age.
Conclusion These results provide evidence that the T risk allele in
TCF7L2 rs7903146 is associated with failure in early postprandial glycemic
control and requirement of insulin therapy in women with gestational diabetes
mellitus, even after adjusting for confounding factors such BMI and age.
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Affiliation(s)
- Laura Potasso
- Division of Endocrinology and Diabetology, Department of Medicine II,
Medical Center – University of Freiburg, Faculty of Medicine, University
of Freiburg, Freiburg, Germany
| | - Nikolaos Perakakis
- Division of Endocrinology and Diabetology, Department of Medicine II,
Medical Center – University of Freiburg, Faculty of Medicine, University
of Freiburg, Freiburg, Germany
- Current address: Division of Endocrinology, Diabetes and Metabolism,
Beth Israel Deaconess Medical Center, Harvard Medical School, Boston,
Massachusetts
| | - Apostolia Lamprinou
- Department of Internal Medicine, Division of Endocrinology,
Diabetology, Angiology, Nephrology and Clinical Chemistry, University Hospital
Tübingen, Tübingen, Freiburg, Germany
- Institute for Diabetes Research and Metabolic Diseases of the Helmholtz
Centre Munich at the University of Tübingen, Tübingen,
Germany
- German Center for Diabetes Research (DZD), Neuherberg, Freiburg,
Germany
| | - Elektra Polyzou
- University Hospital Attikon, 3rd Department of Obstetrics and
Gynecology, Greece
| | - Dimitrios Kassanos
- University Hospital Attikon, 3rd Department of Obstetrics and
Gynecology, Greece
| | - Andreas Peter
- Department of Internal Medicine, Division of Endocrinology,
Diabetology, Angiology, Nephrology and Clinical Chemistry, University Hospital
Tübingen, Tübingen, Freiburg, Germany
- Institute for Diabetes Research and Metabolic Diseases of the Helmholtz
Centre Munich at the University of Tübingen, Tübingen,
Germany
- German Center for Diabetes Research (DZD), Neuherberg, Freiburg,
Germany
| | - Günter Päth
- Division of Endocrinology and Diabetology, Department of Medicine II,
Medical Center – University of Freiburg, Faculty of Medicine, University
of Freiburg, Freiburg, Germany
| | - Jochen Seufert
- Division of Endocrinology and Diabetology, Department of Medicine II,
Medical Center – University of Freiburg, Faculty of Medicine, University
of Freiburg, Freiburg, Germany
| | - Katharina Laubner
- Division of Endocrinology and Diabetology, Department of Medicine II,
Medical Center – University of Freiburg, Faculty of Medicine, University
of Freiburg, Freiburg, Germany
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Laubner K, Singler E, Straetener J, Siegmund T, Päth G, Seufert J. Comparative Dose Accuracy of Durable and Patch Insulin Pumps Under Laboratory Conditions. Diabetes Technol Ther 2019; 21:371-378. [PMID: 31149838 DOI: 10.1089/dia.2019.0089] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Background: Recent studies demonstrate variable results of the accuracy with which patch pumps infuse insulin. Aim of this evaluation was to measure dose accuracies of the patch pump mylife™ OmniPod® (OP) in comparison with the durable insulin pump MiniMed® 640G (MM) simulating real-life clinical situations under laboratory conditions. Methods: Thirty-two OP and 15 MM were tested using insulin aspart at five different boluses (0.5, 1, 5, 10, and 15 international units [IU]) and three basal rates (0.2, 0.6, and 1.8 IU/h) at different time points during a 70 h investigation period. Owing to malfunctions only 22 OP and 11 MM could be analyzed. Dose accuracy was measured by an experimental setting based on IEC 60601-2-24:2012 with determination of weight differences of insulin collection tubes before and after experiments using a precision scale. A maximal tolerance of ±5% for boluses and basal rates was considered adequate according to IEC 60601-2-24:2012. Results: For the five boluses, the percentages of measurement results within the ±5% accuracy threshold were as follows: OP (18.6%, 26.5%, 89.0%, 96.0%, and 96.0%); MM (21.7%, 44.1%, 88.1%, 98.3%, and 100.0%). Both pumps were more accurate at higher bolus volumes (5, 10, and 15 IU), later bolus periods, and if the accuracy threshold was lowered to <10%, <15%, or >15%. For the three basal rates, the percentages within the ±5% accuracy threshold were as follows: OP (66.7%, 22.7%, and 16.7%); MM (14.3%, 0.0%, and 0.0%). Conclusion: This study demonstrates low accuracy for basal rates and single bolus deliveries at low insulin doses for both pump models. Clinicians should be aware of this variability when initiating insulin pump therapy especially in insulin-sensitive patients with low insulin dose requirements.
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Affiliation(s)
- Katharina Laubner
- 1 Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Eva Singler
- 1 Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jan Straetener
- 1 Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Thorsten Siegmund
- 2 Department of Endocrinology, Diabetology and Metabolism, Isar Klinikum, Munich, Germany
| | - Günter Päth
- 1 Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jochen Seufert
- 1 Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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Päth G, Perakakis N, Mantzoros CS, Seufert J. Stem cells in the treatment of diabetes mellitus - Focus on mesenchymal stem cells. Metabolism 2019; 90:1-15. [PMID: 30342065 DOI: 10.1016/j.metabol.2018.10.005] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 09/25/2018] [Accepted: 10/14/2018] [Indexed: 12/14/2022]
Abstract
Diabetes mellitus type 1 and type 2 have become a global epidemic with dramatically increasing incidences. Poorly controlled diabetes is associated with severe life-threatening complications. Beside traditional treatment with insulin and oral anti-diabetic drugs, clinicians try to improve patient's care by cell therapies using embryonic stem cells (ESC), induced pluripotent stem cells (iPSC) and adult mesenchymal stem cells (MSC). ESC display a virtually unlimited plasticity, including the differentiation into insulin producing β-cells, but they raise ethical concerns and bear, like iPSC, the risk of tumours. IPSC may further inherit somatic mutations and remaining somatic transcriptional memory upon incomplete re-programming, but allow the generation of patient/disease-specific cell lines. MSC avoid such issues but have not been successfully differentiated into β-cells. Instead, MSC and their pericyte phenotypes outside the bone marrow have been recognized to secrete numerous immunomodulatory and tissue regenerative factors. On this account, the term 'medicinal signaling cells' has been proposed to define the new conception of a 'drug store' for injured tissues and to stay with the MSC nomenclature. This review presents the biological background and the resulting clinical potential and limitations of ESC, iPSC and MSC, and summarizes the current status quo of cell therapeutic concepts and trials.
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Affiliation(s)
- Günter Päth
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany.
| | - Nikolaos Perakakis
- Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Christos S Mantzoros
- Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Jochen Seufert
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
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6
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Liu C, Zhang W, Peradze N, Lang L, Straetener J, Feilen PJ, Alt M, Jäger C, Laubner K, Perakakis N, Seufert J, Päth G. Mesenchymal stem cell (MSC)-mediated survival of insulin producing pancreatic β-cells during cellular stress involves signalling via Akt and ERK1/2. Mol Cell Endocrinol 2018; 473:235-244. [PMID: 29421520 DOI: 10.1016/j.mce.2018.01.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 11/24/2017] [Accepted: 01/29/2018] [Indexed: 01/08/2023]
Abstract
Mesenchymal stem cells (MSC) are of interest for cell therapy since their secreted factors mediate immunomodulation and support tissue regeneration. This study investigated the direct humoral interactions between MSC and pancreatic β-cells using human telomerase-immortalized MSC (hMSC-TERT) and rat insulinoma-derived INS-1E β-cells. hMSC-TERT supported survival of cocultured INS-1E β-cells during cellular stress by alloxan (ALX) and streptozotocin (STZ), but not in response to IL-1β. Accordingly, hMSC-TERT had no effect on inflammatory cytokine-related signalling via NF-kB and p-JNK but maintained p-Akt and upregulated p-ERK1/2. Inhibition of either p-Akt or p-ERK1/2 did not abolish protection by hMSC-TERT but activated the respective non-inhibited pathway. This suggests that one pathway compensates for the other. Main results were confirmed in mouse islets except hMSC-TERT-mediated upregulation of p-ERK1/2. Therefore, MSC promote β-cell survival by preservation of p-Akt signalling and further involve p-ERK1/2 activation in certain conditions such as loss of p-Akt or insulinoma background.
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Affiliation(s)
- Chune Liu
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany; Divisions of Endocrinology and Metabolism, Pediatrics, Johns Hopkins University, Baltimore, USA
| | - Weiwei Zhang
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Natia Peradze
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Leonie Lang
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Jan Straetener
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Peter J Feilen
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Marcus Alt
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Christina Jäger
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Katharina Laubner
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Nikolaos Perakakis
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Jochen Seufert
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
| | - Günter Päth
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Germany.
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7
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Liu F, Zhang W, Utech T, Ringwald M, Seufert J, Päth G. ETV5 knockdown enhances loss of streptozotocin- and palmitate-induced viability in pancreatic INS-1E beta cells. DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1657799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- F Liu
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - W Zhang
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - T Utech
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - M Ringwald
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - J Seufert
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - G Päth
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
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8
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Potasso L, Perakakis N, Lamprinou A, Arendt LC, Peter A, Rasenack R, Päth G, Seufert J, Laubner K. The T risk allele of TCF7L2 rs 7903146 is associated with impaired insulin secretion rather than insulin resistance: A clinical pilot study in women with a history of gestational diabetes (GDM). DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1641920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- L Potasso
- Uniklinik Freiburg, Innere II, Freiburg, Germany
| | - N Perakakis
- Uniklinik Freiburg, Innere II, Freiburg, Germany
| | - A Lamprinou
- University Hospital Tübingen, Tübingen, Germany
- Institut für Diabetes-Forschung und Metabolische Erkrankungen (IDM) – Metabolic Imaging des Helmholtz-Zentrums München an der Universität Tübingen, Tübingen, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - LC Arendt
- Uniklinik Freiburg, Innere II, Freiburg, Germany
| | - A Peter
- University Hospital Tübingen, Tübingen, Germany
- Institut für Diabetes-Forschung und Metabolische Erkrankungen (IDM) – Metabolic Imaging des Helmholtz-Zentrums München an der Universität Tübingen, Tübingen, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - R Rasenack
- Uniklinik Freiburg, Division of Perinatology, Freiburg, Germany
| | - G Päth
- Uniklinik Freiburg, Innere II, Freiburg, Germany
| | - J Seufert
- Uniklinik Freiburg, Innere II, Freiburg, Germany
| | - K Laubner
- Uniklinik Freiburg, Innere II, Freiburg, Germany
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9
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Zhang W, Liu F, Seufert J, Päth G. Mesenchymal stem cells (MSC) reduce necrosis and apoptosis of pancreatic INS-1E beta cells during alloxan and streptozotocin exposure. DIABETOL STOFFWECHS 2018. [DOI: 10.1055/s-0038-1641823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- W Zhang
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - F Liu
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - J Seufert
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - G Päth
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
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10
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Zhang W, Liu C, Peradze N, Straetener J, Laubner K, Perakakis N, Seufert J, Päth G. Mesenchymal Stem Cell (MSC)-derived humoral factors promote survival of insulin producing pancreatic β-cells during intrinsic cellular stress via Akt and ERK1/2 signalling. DIABETOL STOFFWECHS 2017. [DOI: 10.1055/s-0037-1601656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- W Zhang
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - C Liu
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - N Peradze
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - J Straetener
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - K Laubner
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - N Perakakis
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - J Seufert
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
| | - G Päth
- Uniklinik Freiburg, Innere Medizin II, Endokrinologie & Diabetologie, Freiburg, Germany
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11
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Peradze N, Straetener J, Zhang W, Liu F, Laubner K, Perakakis N, Seufert J, Päth G. Exocrine AR42J acinar cells enhance viability of cocultured endocrine INS-1E beta cells. DIABETOL STOFFWECHS 2017. [DOI: 10.1055/s-0037-1601657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- N Peradze
- Universitätsklinikum Freiburg, Innere Medizin II, Freiburg, Germany
| | - J Straetener
- Universitätsklinikum Freiburg, Innere Medizin II, Freiburg, Germany
| | - W Zhang
- Universitätsklinikum Freiburg, Innere Medizin II, Freiburg, Germany
| | - F Liu
- Universitätsklinikum Freiburg, Innere Medizin II, Freiburg, Germany
| | - K Laubner
- Universitätsklinikum Freiburg, Innere Medizin II, Freiburg, Germany
| | - N Perakakis
- Universitätsklinikum Freiburg, Innere Medizin II, Freiburg, Germany
| | - J Seufert
- Universitätsklinikum Freiburg, Innere Medizin II, Freiburg, Germany
| | - G Päth
- Universitätsklinikum Freiburg, Innere Medizin II, Freiburg, Germany
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Singler E, Siegmund T, Päth G, Hruby B, Tränkle S, Straetener J, Hille M, Kriedemann D, Seufert J, Laubner K. Insulinabgabegenauigkeiten von Patch-Pumpen versus Schlauchpumpen – Eine systematische Analyse unter Laborbedingungen. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1580772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zhang W, Peradze N, Liu F, Straetener J, Laubner K, Perakakis N, Seufert J, Päth G. Mesenchymal stem cell (MSC)-mediated activation of ERK1/2 signaling does not contribute to maintained survival of cocultured alloxan-treated INS-1E beta cells. DIABETOL STOFFWECHS 2016. [DOI: 10.1055/s-0036-1580894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Jain D, Weber G, Eberhard D, Mehana AE, Eglinger J, Welters A, Bartosinska B, Jeruschke K, Weiss J, Päth G, Ariga H, Seufert J, Lammert E. DJ-1 Protects Pancreatic Beta Cells from Cytokine- and Streptozotocin-Mediated Cell Death. PLoS One 2015; 10:e0138535. [PMID: 26422139 PMCID: PMC4589499 DOI: 10.1371/journal.pone.0138535] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 09/01/2015] [Indexed: 01/07/2023] Open
Abstract
A hallmark feature of type 1 and type 2 diabetes mellitus is the progressive dysfunction and loss of insulin-producing pancreatic beta cells, and inflammatory cytokines are known to trigger beta cell death. Here we asked whether the anti-oxidant protein DJ-1 encoded by the Parkinson’s disease gene PARK7 protects islet cells from cytokine- and streptozotocin-mediated cell death. Wild type and DJ-1 knockout mice (KO) were treated with multiple low doses of streptozotocin (MLDS) to induce inflammatory beta cell stress and cell death. Subsequently, glucose tolerance tests were performed, and plasma insulin as well as fasting and random blood glucose concentrations were monitored. Mitochondrial morphology and number of insulin granules were quantified in beta cells. Moreover, islet cell damage was determined in vitro after streptozotocin and cytokine treatment of isolated wild type and DJ-1 KO islets using calcein AM/ethidium homodimer-1 staining and TUNEL staining. Compared to wild type mice, DJ-1 KO mice became diabetic following MLDS treatment. Insulin concentrations were substantially reduced, and fasting blood glucose concentrations were significantly higher in MLDS-treated DJ-1 KO mice compared to equally treated wild type mice. Rates of beta cell apoptosis upon MLDS treatment were twofold higher in DJ-1 KO mice compared to wild type mice, and in vitro inflammatory cytokines led to twice as much beta cell death in pancreatic islets from DJ-1 KO mice versus those of wild type mice. In conclusion, this study identified the anti-oxidant protein DJ-1 as being capable of protecting pancreatic islet cells from cell death induced by an inflammatory and cytotoxic setting.
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Affiliation(s)
- Deepak Jain
- Institute of Metabolic Physiology, Heinrich Heine University, Düsseldorf, Germany
- Institute for Beta Cell Biology, German Diabetes Center at Heinrich Heine University, Leibniz Center for Diabetes Research, Düsseldorf, Germany
- German Center for Diabetes Research (DZD e.V.), Düsseldorf Partner Institute, Düsseldorf, Germany
| | - Gesine Weber
- Institute of Metabolic Physiology, Heinrich Heine University, Düsseldorf, Germany
| | - Daniel Eberhard
- Institute of Metabolic Physiology, Heinrich Heine University, Düsseldorf, Germany
- Institute for Beta Cell Biology, German Diabetes Center at Heinrich Heine University, Leibniz Center for Diabetes Research, Düsseldorf, Germany
| | - Amir E. Mehana
- Division of Endocrinology and Diabetology, Department of Internal Medicine II, University Hospital of Freiburg, Freiburg, Germany
- Department of Zoology, Faculty of Science, Suez Canal University, Ismailia, Egypt
| | - Jan Eglinger
- Institute of Metabolic Physiology, Heinrich Heine University, Düsseldorf, Germany
- Institute for Beta Cell Biology, German Diabetes Center at Heinrich Heine University, Leibniz Center for Diabetes Research, Düsseldorf, Germany
- German Center for Diabetes Research (DZD e.V.), Düsseldorf Partner Institute, Düsseldorf, Germany
| | - Alena Welters
- Institute of Metabolic Physiology, Heinrich Heine University, Düsseldorf, Germany
- Institute for Beta Cell Biology, German Diabetes Center at Heinrich Heine University, Leibniz Center for Diabetes Research, Düsseldorf, Germany
- German Center for Diabetes Research (DZD e.V.), Düsseldorf Partner Institute, Düsseldorf, Germany
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, University Children’s Hospital Düsseldorf, Düsseldorf, Germany
| | - Barbara Bartosinska
- Institute of Metabolic Physiology, Heinrich Heine University, Düsseldorf, Germany
| | - Kay Jeruschke
- Institute of Clinical Biochemistry and Pathobiochemistry, German Diabetes Center at Heinrich Heine University, Leibniz Center for Diabetes Research, Düsseldorf, Germany
| | - Jürgen Weiss
- Institute of Clinical Biochemistry and Pathobiochemistry, German Diabetes Center at Heinrich Heine University, Leibniz Center for Diabetes Research, Düsseldorf, Germany
| | - Günter Päth
- Division of Endocrinology and Diabetology, Department of Internal Medicine II, University Hospital of Freiburg, Freiburg, Germany
| | - Hiroyoshi Ariga
- Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-Ku, N12 W6, Sapporo, Japan
| | - Jochen Seufert
- Division of Endocrinology and Diabetology, Department of Internal Medicine II, University Hospital of Freiburg, Freiburg, Germany
| | - Eckhard Lammert
- Institute of Metabolic Physiology, Heinrich Heine University, Düsseldorf, Germany
- Institute for Beta Cell Biology, German Diabetes Center at Heinrich Heine University, Leibniz Center for Diabetes Research, Düsseldorf, Germany
- German Center for Diabetes Research (DZD e.V.), Düsseldorf Partner Institute, Düsseldorf, Germany
- * E-mail:
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Päth G, Seufert J. Stammzelltherapie des Diabetes mellitus Typ 1. Diabetologe 2015. [DOI: 10.1007/s11428-015-0024-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Mehana AE, Straetener J, Baumann J, Perakakis N, Laubner K, Seufert J, Päth G. Preserved insulin response of Nupr1-transgenic islets during diabetogenic injury is correlated with reduced secretion of IL-1beta and enhanced secretion of IL-1 receptor antagonist. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1549755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Perakakis N, Arend L, Potasso L, Lamprinou A, Polyzou E, Kassanos A, Rasenack R, Päth G, Seufert J, Laubner K. Effects of the gestational diabetes-risk polymorphism rs10501320 of MADD gene on metabolic phenotype and glucose homeostasis in women with history of gestational diabetes. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1549700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Mihic-Necic B, Taromi S, Liu C, Straetener J, Ihle M, Kriedemann D, Hille M, Mehana AE, Laubner K, Perakakis N, Päth G, Seufert J. The macrophage migration inhibitory factor (MIF)/CXCR4 axis regulates migration of bone marrow derived mesenchymal stem cells towards pancreatic ß-cells under lipotoxic conditions. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1549512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Mehana AE, Pilz I, Dufner B, Jäger C, Sojka S, Baumann J, Alt M, Liu C, Mihic-Necic B, Parsons L, Perakakis N, Laubner K, Päth G, Seufert J. The anti-inflammatory protein NUPR1 (p8) is a novel intracellular mediator of pancreatic β-cell protection during diabetogenic stress in vitro and in vivo. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Potasso L, Perakakis N, Lamprinou A, Polyzou E, Kassanos D, Peter A, Rasenack R, Päth G, Seufert J, Laubner K. Type 2 Diabetes mellitus genetic risk variant T in TCF7L2 rs 7903146 in women is associated with an increased risk for the development of gestational diabetes mellitus (GDM) with necessity of insulin therapy. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1375153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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21
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Mihic-Necic B, Mehana AE, Liu C, Parsons L, Baumann J, Perakakis N, Laubner K, Seufert J, Päth G. The anti-inflammatory protein NUPR1 protects pancreatic islets from diabetogenic lipotoxic injury ex vivo. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Perakakis N, Potasso L, Lamprinou A, Polyzou E, Kassanos D, Peter A, Rasenack R, Päth G, Seufert J, Laubner K. Der mit einer gestörten Insulinbiosynthese assoziierte Polymorphismus rs10501320 im MADD Gen erhöht das Risiko für das Auftreten von Gestationsdiabetes. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Liu C, Lang L, Mehana AE, Mihic-Necic B, Parsons L, Baumann J, Jäger C, Perakakis N, Laubner K, Seufert J, Päth G. Humoral factors by human bone marrow-derived MSC enhance beta cell proliferation via ERK1/2 signalling. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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Mihic-Necic B, Mehana AE, Parsons L, Liu C, Baumann J, Perakakis N, Laubner K, Seufert J, Päth G. The anti-inflammatory protein p8 protects pancreatic islets from diabetogenic lipotoxic injury ex vivo. Exp Clin Endocrinol Diabetes 2014. [DOI: 10.1055/s-0034-1372022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Perakakis N, Potasso L, Lamprinou A, Polyzou E, Kassanos D, Peter A, Rasenack R, Päth G, Seufert J, Laubner K. The insulin-biosynthesis-impairing MADD rs10501320 genetic polymorphism is associated with gestational diabetes in European populations. Exp Clin Endocrinol Diabetes 2014. [DOI: 10.1055/s-0034-1372031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Potasso L, Perakakis N, Lamprinou A, Polyzou E, Kassanos D, Peter A, Rasenack R, Päth G, Seufert J, Laubner K. Type 2 Diabetes mellitus genetic risk variant T in TCF7L2 rs7903146 in women is associated with an increased probability of insulin therapy in gestational diabetes mellitus (GDM). Exp Clin Endocrinol Diabetes 2014. [DOI: 10.1055/s-0034-1372113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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Mehana AE, Pilz I, Dufner B, Jäger C, Sojka S, Baumann J, Alt M, Liu C, Perakakis N, Laubner K, Mihic-Necic B, Päth G, Seufert J. p8 is a novel intracellular mediator of pancreatic β-cell protection that preserves insulin secretory function during inflammatory cell stress in vivo. Exp Clin Endocrinol Diabetes 2014. [DOI: 10.1055/s-0034-1372020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Liu C, Lang L, Mihic-Necic BB, Mehana AE, Baumann J, Perakakis N, Laubner K, Seufert J, Päth G. Humoral factors by human bone marrow-derived MSC enhance beta cell proliferation via ERK1/2 signalling. Exp Clin Endocrinol Diabetes 2014. [DOI: 10.1055/s-0034-1372024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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29
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Liu C, Lang L, Jäger C, Baumann J, Schmid M, Mehana AE, Alt M, Sojka S, Perakakis N, Laubner K, Päth G, Seufert J. Humoral factors by bone marrow-derived MSC enhance survival of injured β-cells by preserving AKT signalling. DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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30
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Mehana AE, Pilz I, Dufner B, Jäger C, Sojka S, Baumann J, Alt M, Liu C, Perakakis N, Laubner K, Päth G, Seufert J. p8 is a novel intracellular mediator of pancreatic beta cell protection that preserves insulin secretory function during inflammatory stress in vivo. DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Mehana AE, Pilz I, Dufner B, Jäger C, Sojka S, Baumann J, Alt M, Seufert J, Päth G. Intracellular p8 mediates potent protection of insulin secretory function during inflammatory beta cell stress. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Liu C, Lang L, Schmid M, Jäger C, Sojka S, Baumann J, Päth G, Seufert J. Bone marrow-derived MSC enhance survival of injured β-cells by preserving Akt signalling via humoral factors. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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33
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Perakakis N, Danassi D, Alt M, Tsaroucha E, Mehana AE, Rimmer N, Laubner K, Wang H, Wollheim CB, Seufert J, Päth G. Human Krüppel-like factor 11 differentially regulates human insulin promoter activity in β-cells and non-β-cells via p300 and PDX1 through the regulatory sites A3 and CACCC box. Mol Cell Endocrinol 2012; 363:20-6. [PMID: 22801105 DOI: 10.1016/j.mce.2012.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Revised: 06/12/2012] [Accepted: 07/07/2012] [Indexed: 11/29/2022]
Abstract
Human Krüppel-like factor 11 (hKLF11) has been characterised to both activate and inhibit human insulin promoter (hInsP) activity. Since KLF11 is capable to differentially regulate genes dependent on recruited cofactors, we investigated the effects of hKLF11 on cotransfected hInsP in both β-cells and non-β-cells. hKLF11 protein interacts with hp300 but not with hPDX1. Overexpressed hKLF11 stimulates PDX1-transactivation of hInsP in HEK293 non-β-cells, but confers inhibition in INS-1E β-cells. Both hKLF11 functions can be neutralised by the p300 inhibitor E1A, increased hp300 levels (INS-1E), dominant negative (DN)-PDX1 and by mutation of the PDX1 binding site A3 or the CACCC box. In summary, hKLF11 differentially regulates hInsP activity depending on the molecular context via modulation of p300:PDX1 interactions with the A3 element and CACCC box. We postulate that KLF11 has a role in fine-tuning insulin transcription in certain cellular situations rather than representing a major transcriptional activator or repressor of the insulin gene.
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Affiliation(s)
- Nikolaos Perakakis
- Division of Endocrinology and Diabetology, Department of Internal Medicine II, University Hospital of Freiburg, Hugstetter Strasse 55, 79106 Freiburg, Germany
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Potasso L, Perakakis N, Lamprinou A, Polyzou E, Kassanos D, Peter A, Rasenack R, Päth G, Seufert J, Laubner K. Der genetische Typ 2 Diabetes Risikomarker TCF7L2 rs7903146 ist differenziell assoziiert mit dem Auftreten eines Gestationsdiabetes bei deutschen und griechischen Frauen. DIABETOL STOFFWECHS 2012. [DOI: 10.1055/s-0032-1314779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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35
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Perakakis N, Danassi D, Tsaroucha E, Laubner K, Rimmer N, Alt M, Wang H, Wollheim CB, Seufert J, Päth G. Differenzielle Regulation des humanen Insulinpromotors in β-Zellen und nicht-β-Zellen durch Interaktion von Krüppel-like factor 11 (KLF11) mit dem P300-PDX1-Transaktivierungskomplex. DIABETOL STOFFWECHS 2012. [DOI: 10.1055/s-0032-1314537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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36
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Mehana AE, Pilz IH, Dufner B, Jäger C, Sojka S, Baumann J, Alt M, Seufert J, Päth G. Verbesserte Glucosetoleranz in transgenen Mäusen mit β-zellspezifischer Überproduktion des Proteins p8 nach Hochfettdiät und Insulitis. DIABETOL STOFFWECHS 2012. [DOI: 10.1055/s-0032-1314528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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37
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Lang L, Liu C, Feilen PJ, Jäger C, Alt M, Päth G, Seufert J. Humorale Faktoren aus MSC schützen kokultivierte β-Zellen vor Schädigung durch Alloxan und induzieren Proliferation. DIABETOL STOFFWECHS 2012. [DOI: 10.1055/s-0032-1314539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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38
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Limbert C, Päth G, Ebert R, Rothhammer V, Kassem M, Jakob F, Seufert J. PDX1- and NGN3-mediated in vitro reprogramming of human bone marrow-derived mesenchymal stromal cells into pancreatic endocrine lineages. Cytotherapy 2011; 13:802-13. [DOI: 10.3109/14653249.2011.571248] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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39
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Pilz I, Päth G, Feilen PJ, Dufner B, Rimmer N, Alt M, Seufert J. Verbesserte Insulinfunktion unter Hochfettdiät-induzierter Lipotoxizität in transgenen Mäusen mit ektoper ß-Zell-spezifischer p8-Überexpression. DIABETOL STOFFWECHS 2011. [DOI: 10.1055/s-0031-1277378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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40
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Laubner K, Umpfenbach A, Zahradnik HP, Päth G, Seufert J, Hanjalic-Beck A. Polycystisches Ovarsyndrom (PCOS): 5-Jahres Follow up Metabolischer Parameter. DIABETOL STOFFWECHS 2011. [DOI: 10.1055/s-0031-1277361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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41
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Kuehnen P, Laubner K, Raile K, Schöfl C, Jakob F, Pilz I, Päth G, Seufert J. Protein phosphatase 1 (PP-1)-dependent inhibition of insulin secretion by leptin in INS-1 pancreatic β-cells and human pancreatic islets. Endocrinology 2011; 152:1800-8. [PMID: 21427225 DOI: 10.1210/en.2010-1094] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Leptin inhibits insulin secretion from pancreatic β-cells, and in turn, insulin stimulates leptin biosynthesis and secretion from adipose tissue. Dysfunction of this adipoinsular feedback loop has been proposed to be involved in the development of hyperinsulinemia and type 2 diabetes mellitus. At the molecular level, leptin acts through various pathways, which in combination confer inhibitory effects on insulin biosynthesis and secretion. The aim of this study was to identify molecular mechanisms of leptin action on insulin secretion in pancreatic β-cells. To identify novel leptin-regulated genes, we performed subtraction PCR in INS-1 β-cells. Regulated expression of identified genes was confirmed by RT-PCR and Northern and Western blotting. Furthermore, functional impact on β-cell function was characterized by insulin-secretion assays, intracellular Ca²(+) concentration measurements, and enzyme activity assays. PP-1α, the catalytic subunit of protein phosphatase 1 (PP-1), was identified as a novel gene down-regulated by leptin in INS-1 pancreatic β-cells. Expression of PP-1α was verified in human pancreatic sections. PP-1α mRNA and protein expression is down-regulated by leptin, which culminates in reduction of PP-1 enzyme activity in β-cells. In addition, glucose-induced insulin secretion was inhibited by nuclear inhibitor of PP-1 and calyculin A, which was in part mediated by a reduction of PP-1-dependent calcium influx into INS-1 β-cells. These results identify a novel molecular pathway by which leptin confers inhibitory action on insulin secretion, and impaired PP-1 inhibition by leptin may be involved in dysfunction of the adipoinsular axis during the development of hyperinsulinemia and type 2 diabetes mellitus.
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Affiliation(s)
- Peter Kuehnen
- Institute of Experimental Pediatric Endocrinology, Charité Children's Hospital, Universitätsmedizin Berlin, Berlin, Germany.
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Feilen PJ, Päth G, Pilz I, Jacob M, Jäger C, Alt M, Seufert J. Mesenchymale Stromazellen aus dem Knochenmark (MSC) reduzieren Streptozotozin (STZ)-induzierte Schädigung von Insulin produzierenden ß-Zellen durch humorale Faktoren in vitro. DIABETOL STOFFWECHS 2011. [DOI: 10.1055/s-0031-1277452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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43
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Pilz IH, Päth G, Tsaroucha E, Dufner B, van Loosen S, Alt M, Hopt UT, Seufert J. Das Protein p8 wird akut und temporär in STZ geschädigten Betazellen hochreguliert und verhindert Apoptose durch Inhibition der Caspasen 3 und 7. DIABETOL STOFFWECHS 2010. [DOI: 10.1055/s-0030-1253998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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44
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Pilz I, Päth G, Tsaroucha E, Dufner B, van Loosen S, Alt M, Feilen PJ, Hopt UT, Seufert J. Protein p8 ist ein Akutfaktor bei diabetischem Gewebestress durch STZ und inhibiert die Apoptose-Effektormoleküle Caspase 3 und 7 in beta-Zellen. DIABETOL STOFFWECHS 2010. [DOI: 10.1055/s-0030-1253799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Feilen PJ, Päth G, Dufner B, van Loosen S, Alt M, Pilz I, Seufert J. STZ-geschädigte beta-Zellen induzieren Chemokinrezeptoren und Migration in humanen Telomerase-immortalisierten mesenchymalen Knochenmarksstammzellen (hMSC-TERT) in vitro. DIABETOL STOFFWECHS 2010. [DOI: 10.1055/s-0030-1253798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Päth G, Tsaroucha E, Perakakis N, Pilz I, Alt M, Ehler S, van Loosen S, Seufert J. Stable overexpression of p8 increases survival of INS-1E beta cells in response to streptozotocin (STZ)-induced beta cell damage in vitro. DIABETOL STOFFWECHS 2009. [DOI: 10.1055/s-0029-1221873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Laubner K, Jentzsch B, Päth G, Schardt F, Allolio B, Seufert J. Kurzzeit „Lifestyle-Intervention“ im Rahmen einer innerbetrieblichen Gesundheitsförderung verbessert Parameter des Metabolischen Syndroms. DIABETOL STOFFWECHS 2009. [DOI: 10.1055/s-0029-1222007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Limbert C, Päth G, Jakob F, Seufert J. Beta-cell replacement and regeneration: Strategies of cell-based therapy for type 1 diabetes mellitus. Diabetes Res Clin Pract 2008; 79:389-99. [PMID: 17854943 DOI: 10.1016/j.diabres.2007.06.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2007] [Accepted: 06/20/2007] [Indexed: 01/09/2023]
Abstract
Pancreatic islet transplantation has demonstrated that long-term insulin independence may be achieved in patients suffering from diabetes mellitus type 1. However, because of limited availability of islet tissue, new sources of insulin producing cells that are responsive to glucose are required. Development of pancreatic beta-cell lines from rodent or human origin has progressed slowly in recent years. Current experiments for ex vivo expansion of beta cells and in vitro differentiation of embryonic and adult stem cells into insulin producing beta-cell phenotypes led to promising results. Nevertheless, the cells generated to date lack important characteristics of mature beta cells and generally display reduced insulin secretion and loss of proliferative capacity. Therefore, much better understanding of the mechanisms that regulate expansion and differentiation of stem/progenitor cells is necessary. Here, we review recent advances in the identification of potential cellular sources, and the development of strategies to regenerate or fabricate insulin producing and glucose sensing cells that might enable future cell-based therapies of diabetes mellitus type 1.
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Affiliation(s)
- C Limbert
- Division of Endocrinology and Diabetology, Department of Internal Medicine II, University Hospital Freiburg, Freiburg, Germany
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Perakakis N, Päth G, Niu X, van Loosen S, Alt M, Stahl T, Seufert J. KLF11 differentially regulates PDX1-induced activation of the human insulin promoter in rodent beta cells and human non beta cells. DIABETOL STOFFWECHS 2008. [DOI: 10.1055/s-2008-1076418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Päth G, Perakakis N, Ehler S, van Loosen S, Alt M, Stahl T, Seufert J. The stress-related protein p8 protects beta cells from streptozotocin (STZ)-induced cell death in vitro. DIABETOL STOFFWECHS 2008. [DOI: 10.1055/s-2008-1076153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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