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Yan S, Chen L, Li N, Wei X, Wang J, Dong W, Wang Y, Shi J, Ding X, Peng Y. Effect of Akkermansia muciniphila on pancreatic islet β-cell function in rats with prediabetes mellitus induced by a high-fat diet. BIORESOUR BIOPROCESS 2024; 11:51. [PMID: 38763955 PMCID: PMC11102893 DOI: 10.1186/s40643-024-00766-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 05/02/2024] [Indexed: 05/21/2024] Open
Abstract
Prediabetes is an important stage in the development of diabetes. It is necessary to find a safe, effective and sustainable way to delay and reverse the progression of prediabetes. Akkermansia muciniphila (A. muciniphila) is one of the key bacteria associated with glucose metabolism. Recent studies mainly focus on the effect of A. muciniphila on obesity and insulin resistance, but there is no research on the effect of A. muciniphila on pancreatic β-cell function and its mechanism in prediabetes. In this study, we investigated the effects of A. muciniphila on β-cell function, apoptosis and differentiation, as well as its effects on the gut microbiome, intestinal barrier, metaflammation and the expression of Toll-like receptors (TLRs) in a high-fat diet (HFD)-induced prediabetic rat model. The effect of A. muciniphila was compared with dietary intervention. The results showed both A. muciniphila treatment and dietary intervention can reduce metaflammation by repairing the intestinal barrier in rats with prediabetes induced by an HFD and improve β-cell secretory function, apoptosis and differentiation through signaling pathways mediated by TLR2 and TLR4. Additionally, A. muciniphila can further elevate β-cell secretion, attenuate apoptosis and improve differentiation and the TLR signaling pathway on the basis of diet.
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Affiliation(s)
- Shuai Yan
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Lin Chen
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Na Li
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Xiaohui Wei
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Jingjing Wang
- Shanghai Key Laboratory for Pancreatic Diseases, Institute of Translational Medicine, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 201620, China
| | - Weiping Dong
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Yufan Wang
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Jianxia Shi
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China
| | - Xiaoying Ding
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China.
| | - Yongde Peng
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, China.
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Suda N, Bartolomé A, Liang J, Son J, Yagishita Y, Siebel C, Accili D, Ding H, Pajvani UB. β-cell Jagged1 is sufficient but not necessary for islet Notch activity and insulin secretory defects in obese mice. Mol Metab 2024; 81:101894. [PMID: 38311286 PMCID: PMC10877406 DOI: 10.1016/j.molmet.2024.101894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/22/2024] [Accepted: 02/01/2024] [Indexed: 02/10/2024] Open
Abstract
OBJECTIVE Notch signaling, re-activated in β cells from obese mice and causal to β cell dysfunction, is determined in part by transmembrane ligand availability in a neighboring cell. We hypothesized that β cell expression of Jagged1 determines the maladaptive Notch response and resultant insulin secretory defects in obese mice. METHODS We assessed expression of Notch pathway components in high-fat diet-fed (HFD) or leptin receptor-deficient (db/db) mice, and performed single-cell RNA sequencing (scRNA-Seq) in islets from patients with and without type 2 diabetes (T2D). We generated and performed glucose tolerance testing in inducible, β cell-specific Jagged1 gain-of- and loss-of-function mice. We also tested effects of monoclonal neutralizing antibodies to Jagged1 in glucose-stimulated insulin secretion (GSIS) assays in isolated islets. RESULTS Jag1 was the only Notch ligand that tracked with increased Notch activity in HFD-fed and db/db mice, as well as in metabolically-inflexible β cells enriched in patients with T2D. Neutralizing antibodies to block Jagged1 in islets isolated from HFD-fed and db/db mice potentiated GSIS ex vivo. To demonstrate if β cell Jagged1 is sufficient to cause glucose tolerance in vivo, we generated inducible β cell-specific Jag1 transgenic (β-Jag1TG) and loss-of-function (iβ-Jag1KO) mice. While forced Jagged1 impaired glucose intolerance due to reduced GSIS, loss of β cell Jagged1 did not protect against HFD-induced insulin secretory defects. CONCLUSIONS Jagged1 is increased in islets from obese mice and in patients with T2D, and neutralizing Jagged1 antibodies lead to improved GSIS, suggesting that inhibition of Jagged1-Notch signaling may have therapeutic benefit. However, genetic loss-of-function experiments suggest that β cells are not a likely source of the Jagged1 signal.
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Affiliation(s)
- Nina Suda
- Department of Medicine, Columbia University, New York, NY, USA
| | | | - Jiani Liang
- Department of Medicine, Columbia University, New York, NY, USA
| | - Jinsook Son
- Department of Medicine, Columbia University, New York, NY, USA
| | - Yoko Yagishita
- Department of Medicine, Columbia University, New York, NY, USA
| | - Christian Siebel
- Department of Discovery Oncology, Genentech, South San Francisco, CA, USA
| | - Domenico Accili
- Department of Medicine, Columbia University, New York, NY, USA
| | - Hongxu Ding
- Department of Pharmacy Practice & Science, College of Pharmacy, University of Arizona, Tucson, AZ, 85721, USA
| | - Utpal B Pajvani
- Department of Medicine, Columbia University, New York, NY, USA.
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Fu Q, Qian Y, Jiang H, He Y, Dai H, Chen Y, Xia Z, Liang Y, Zhou Y, Gao R, Zheng S, Lv H, Sun M, Xu K, Yang T. Genetic lineage tracing identifies adaptive mechanisms of pancreatic islet β cells in various mouse models of diabetes with distinct age of initiation. SCIENCE CHINA. LIFE SCIENCES 2024; 67:504-517. [PMID: 37930473 DOI: 10.1007/s11427-022-2372-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 05/17/2023] [Indexed: 11/07/2023]
Abstract
During the pathogenesis of type 1 diabetes (T1D) and type 2 diabetes (T2D), pancreatic islets, especially the β cells, face significant challenges. These insulin-producing cells adopt a regeneration strategy to compensate for the shortage of insulin, but the exact mechanism needs to be defined. High-fat diet (HFD) and streptozotocin (STZ) treatment are well-established models to study islet damage in T2D and T1D respectively. Therefore, we applied these two diabetic mouse models, triggered at different ages, to pursue the cell fate transition of islet β cells. Cre-LoxP systems were used to generate islet cell type-specific (α, β, or δ) green fluorescent protein (GFP)-labeled mice for genetic lineage tracing, thereinto β-cell GFP-labeled mice were tamoxifen induced. Single-cell RNA sequencing (scRNA-seq) was used to investigate the evolutionary trajectories and molecular mechanisms of the GFP-labeled β cells in STZ-treated mice. STZ-induced diabetes caused extensive dedifferentiation of β cells and some of which transdifferentiated into a or δ cells in both youth- and adulthood-initiated mice while this phenomenon was barely observed in HFD models. β cells in HFD mice were expanded via self-replication rather than via transdifferentiation from α or δ cells, in contrast, α or δ cells were induced to transdifferentiate into β cells in STZ-treated mice (both youth- and adulthood-initiated). In addition to the re-dedifferentiation of β cells, it is also highly likely that these "α or δ" cells transdifferentiated from pre-existing β cells could also re-trans-differentiate into insulin-producing β cells and be beneficial to islet recovery. The analysis of ScRNA-seq revealed that several pathways including mitochondrial function, chromatin modification, and remodeling are crucial in the dynamic transition of β cells. Our findings shed light on how islet β cells overcome the deficit of insulin and the molecular mechanism of islet recovery in T1D and T2D pathogenesis.
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Affiliation(s)
- Qi Fu
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Yu Qian
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Hemin Jiang
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Yunqiang He
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Hao Dai
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Yang Chen
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Zhiqing Xia
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Yucheng Liang
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Yuncai Zhou
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Rui Gao
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Shuai Zheng
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Hui Lv
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Min Sun
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Kuanfeng Xu
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.
| | - Tao Yang
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.
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Jiang H, Zheng S, Qian Y, Zhou Y, Dai H, Liang Y, He Y, Gao R, Lv H, Zhang J, Xia Z, Bian W, Yang T, Fu Q. Restored UBE2C expression in islets promotes β-cell regeneration in mice by ubiquitinating PER1. Cell Mol Life Sci 2023; 80:226. [PMID: 37486389 PMCID: PMC11072275 DOI: 10.1007/s00018-023-04868-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 07/08/2023] [Accepted: 07/10/2023] [Indexed: 07/25/2023]
Abstract
Insulin deficiency may be due to the reduced proliferation capacity of islet β-cell, contributing to the onset of diabetes. It is therefore imperative to investigate the mechanism of the β-cell regeneration in the islets. NKX6.1, one of the critical β-cell transcription factors, is a pivotal element in β-cell proliferation. The ubiquitin-binding enzyme 2C (UBE2C) was previously reported as one of the downstream molecules of NKX6.1 though the exact function and mechanism of UBE2C in β-cell remain to be elucidated. Here, we determined a subpopulation of islet β-cells highly expressing UBE2C, which proliferate actively. We also discovered that β-cell compensatory proliferation was induced by UBE2C via the cell cycle renewal pathway in weaning and high-fat diet (HFD)-fed mice. Moreover, the reduction of β-cell proliferation led to insulin deficiency in βUbe2cKO mice and, therefore, developed type 2 diabetes. UBE2C was found to regulate PER1 degradation through the ubiquitin-proteasome pathway via its association with a ubiquitin ligase, CUL1. PER1 inhibition rescues UBE2C knockout-induced β-cell growth inhibition both in vivo and in vitro. Notably, overexpression of UBE2C via lentiviral transduction in pancreatic islets was able to relaunch β-cell proliferation in STZ-induced diabetic mice and therefore partially alleviated hyperglycaemia and glucose intolerance. This study indicates that UBE2C positively regulates β-cell proliferation by promoting ubiquitination and degradation of the biological clock suppressor PER1. The beneficial effect of UBE2C on islet β-cell regeneration suggests a promising application in treating diabetic patients with β-cell deficiency.
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Affiliation(s)
- Hemin Jiang
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shuai Zheng
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yu Qian
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yuncai Zhou
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hao Dai
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yucheng Liang
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yunqiang He
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Rui Gao
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hui Lv
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jie Zhang
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zhiqing Xia
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wenxuan Bian
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Tao Yang
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
| | - Qi Fu
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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Fu Q, Jiang H, Qian Y, Lv H, Dai H, Zhou Y, Chen Y, He Y, Gao R, Zheng S, Liang Y, Li S, Xu X, Xu K, Yang T. Single-cell RNA sequencing combined with single-cell proteomics identifies the metabolic adaptation of islet cell subpopulations to high-fat diet in mice. Diabetologia 2023; 66:724-740. [PMID: 36538064 PMCID: PMC9765371 DOI: 10.1007/s00125-022-05849-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 10/13/2022] [Indexed: 12/24/2022]
Abstract
AIMS/HYPOTHESIS Islets have complex heterogeneity and subpopulations. Cell surface markers representing alpha, beta and delta cell subpopulations are urgently needed for investigations to explore the compositional changes of each subpopulation in obesity progress and diabetes onset, and the adaptation mechanism of islet metabolism induced by a high-fat diet (HFD). METHODS Single-cell RNA sequencing (scRNA-seq) was applied to identify alpha, beta and delta cell subpopulation markers in an HFD-induced mouse model of glucose intolerance. Flow cytometry and immunostaining were used to sort and assess the proportion of each subpopulation. Single-cell proteomics was performed on sorted cells, and the functional status of each alpha, beta and delta cell subpopulation in glucose intolerance was deeply elucidated based on protein expression. RESULTS A total of 33,999 cells were analysed by scRNA-seq and clustered into eight populations, including alpha, beta and delta cells. For alpha cells, scRNA-seq revealed that the Ace2low subpopulation had downregulated expression of genes related to alpha cell function and upregulated expression of genes associated with beta cell characteristics in comparison with the Ace2high subpopulation. The impaired function and increased fragility of ACE2low alpha cells exposure to HFD was further suggested by single-cell proteomics. As for beta cells, the CD81high subpopulation may indicate an immature signature of beta cells compared with the CD81low subpopulation, which had robust function. We also found differential expression of Slc2a2 in delta cells and a potentially stronger cellular function and metabolism in GLUT2low delta cells than GLUT2high delta cells. Moreover, an increased proportion of ACE2low alpha cells and CD81low beta cells, with a constant proportion of GLUT2low delta cells, were observed in HFD-induced glucose intolerance. CONCLUSIONS/INTERPRETATION We identified ACE2, CD81 and GLUT2 as surface markers to distinguish, respectively, alpha, beta and delta cell subpopulations with heterogeneous maturation and function. The changes in the proportion and functional status of islet endocrine subpopulations reflect the metabolic adaptation of islets to high-fat stress, which weakened the function of alpha cells and enhanced the function of beta and delta cells to bring about glycaemic homeostasis. Our findings provide a fundamental resource for exploring the mechanisms maintaining each islet endocrine subpopulation's fate and function in health and disease. DATA AVAILABILITY The scRNA-seq analysis datasets from the current study are available in the Gene Expression Omnibus (GEO) repository under the accession number GSE203376.
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Affiliation(s)
- Qi Fu
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hemin Jiang
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yu Qian
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hui Lv
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hao Dai
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yuncai Zhou
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yang Chen
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yunqiang He
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Rui Gao
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shuai Zheng
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yucheng Liang
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Siqi Li
- BGI-Shenzhen, Shenzhen, China
- BGI-Wuhan Clinical Laboratories, BGI-Shenzhen, Wuhan, China
| | - Xinyu Xu
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Kuanfeng Xu
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
| | - Tao Yang
- Department of Endocrinology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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6
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Bharath LP, Hart SN, Nikolajczyk BS. T-cell Metabolism as Interpreted in Obesity-associated Inflammation. Endocrinology 2022; 163:6657752. [PMID: 35932471 PMCID: PMC9756079 DOI: 10.1210/endocr/bqac124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Indexed: 11/19/2022]
Abstract
The appreciation of metabolic regulation of T-cell function has exploded over the past decade, as has our understanding of how inflammation fuels comorbidities of obesity, including type 2 diabetes. The likelihood that obesity fundamentally alters T-cell metabolism and thus chronic obesity-associated inflammation is high, but studies testing causal relationships remain underrepresented. We searched PubMed for key words including mitochondria, obesity, T cell, type 2 diabetes, cristae, fission, fusion, redox, and reactive oxygen species to identify foundational and more recent studies that address these topics or cite foundational work. We investigated primary papers cited by reviews found in these searches and highlighted recent work with >100 citations to illustrate the state of the art in understanding mechanisms that control metabolism and thus function of various T-cell subsets in obesity. However, "popularity" of a paper over the first 5 years after publication cannot assess long-term impact; thus, some likely important work with fewer citations is also highlighted. We feature studies of human cells, supplementing with studies from animal models that suggest future directions for human cell research. This approach identified gaps in the literature that will need to be filled before we can estimate efficacy of mitochondria-targeted drugs in clinical trials to alleviate pathogenesis of obesity-associated inflammation.
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Affiliation(s)
- Leena P Bharath
- Department of Nutrition and Public Health, Merrimack College, North Andover, MA 01845, USA
| | - Samantha N Hart
- Departments of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA
| | - Barbara S Nikolajczyk
- Correspondence: Barbara S. Nikolajczyk, PhD, Healthy Kentucky Research Bldg. Rm. 217, 760 Press Ave, Lexington, KY 40536, USA.
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7
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Bourouh C, Courty E, Rolland L, Pasquetti G, Gromada X, Rabhi N, Carney C, Moreno M, Boutry R, Caron E, Benfodda Z, Meffre P, Kerr-Conte J, Pattou F, Froguel P, Bonnefond A, Oger F, Annicotte JS. The transcription factor E2F1 controls the GLP-1 receptor pathway in pancreatic β cells. Cell Rep 2022; 40:111170. [PMID: 35947949 DOI: 10.1016/j.celrep.2022.111170] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 04/11/2022] [Accepted: 07/15/2022] [Indexed: 11/03/2022] Open
Abstract
The glucagon-like peptide 1 (Glp-1) has emerged as a hormone with broad pharmacological potential in type 2 diabetes (T2D) treatment, notably by improving β cell functions. The cell-cycle regulator and transcription factor E2f1 is involved in glucose homeostasis by modulating β cell mass and function. Here, we report that β cell-specific genetic ablation of E2f1 (E2f1β-/-) impairs glucose homeostasis associated with decreased expression of the Glp-1 receptor (Glp1r) in E2f1β-/- pancreatic islets. Pharmacological inhibition of E2F1 transcriptional activity in nondiabetic human islets decreases GLP1R levels and blunts the incretin effect of GLP1R agonist exendin-4 (ex-4) on insulin secretion. Overexpressing E2f1 in pancreatic β cells increases Glp1r expression associated with enhanced insulin secretion mediated by ex-4. Interestingly, ex-4 induces retinoblastoma protein (pRb) phosphorylation and E2f1 transcriptional activity. Our findings reveal critical roles for E2f1 in β cell function and suggest molecular crosstalk between the E2F1/pRb and GLP1R signaling pathways.
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Affiliation(s)
- Cyril Bourouh
- Université de Lille, INSERM, CNRS, CHU Lille, Institut Pasteur de Lille, U1283 - UMR 8199 - EGID, 59000 Lille, France
| | - Emilie Courty
- Université de Lille, INSERM, CNRS, CHU Lille, Institut Pasteur de Lille, U1283 - UMR 8199 - EGID, 59000 Lille, France; Université de Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de Risque et Déterminants Moléculaires des Maladies Liées au Vieillissement, 59000 Lille, France
| | - Laure Rolland
- Université de Lille, INSERM, CNRS, CHU Lille, Institut Pasteur de Lille, U1283 - UMR 8199 - EGID, 59000 Lille, France; Université de Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de Risque et Déterminants Moléculaires des Maladies Liées au Vieillissement, 59000 Lille, France
| | - Gianni Pasquetti
- Université de Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1190 - EGID, 59000 Lille, France
| | - Xavier Gromada
- Université de Lille, INSERM, CNRS, CHU Lille, Institut Pasteur de Lille, U1283 - UMR 8199 - EGID, 59000 Lille, France
| | - Nabil Rabhi
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA
| | - Charlène Carney
- Université de Lille, INSERM, CNRS, CHU Lille, Institut Pasteur de Lille, U1283 - UMR 8199 - EGID, 59000 Lille, France
| | - Maeva Moreno
- Université de Lille, INSERM, CNRS, CHU Lille, Institut Pasteur de Lille, U1283 - UMR 8199 - EGID, 59000 Lille, France
| | - Raphaël Boutry
- Université de Lille, INSERM, CNRS, CHU Lille, Institut Pasteur de Lille, U1283 - UMR 8199 - EGID, 59000 Lille, France
| | - Emilie Caron
- Université de Lille, INSERM, CHU Lille, U1172-LilNCog - Lille Neuroscience & Cognition - EGID - DISTALZ, 59000 Lille, France
| | - Zohra Benfodda
- Université de Nîmes, UPR CHROME, 30021 Nîmes Cedex 1, France
| | - Patrick Meffre
- Université de Nîmes, UPR CHROME, 30021 Nîmes Cedex 1, France
| | - Julie Kerr-Conte
- Université de Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1190 - EGID, 59000 Lille, France
| | - François Pattou
- Université de Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1190 - EGID, 59000 Lille, France
| | - Philippe Froguel
- Université de Lille, INSERM, CNRS, CHU Lille, Institut Pasteur de Lille, U1283 - UMR 8199 - EGID, 59000 Lille, France; Department of Metabolism, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
| | - Amélie Bonnefond
- Université de Lille, INSERM, CNRS, CHU Lille, Institut Pasteur de Lille, U1283 - UMR 8199 - EGID, 59000 Lille, France; Department of Metabolism, Imperial College London, Hammersmith Hospital, London W12 0NN, UK
| | - Frédérik Oger
- Université de Lille, INSERM, CNRS, CHU Lille, Institut Pasteur de Lille, U1283 - UMR 8199 - EGID, 59000 Lille, France
| | - Jean-Sébastien Annicotte
- Université de Lille, INSERM, CNRS, CHU Lille, Institut Pasteur de Lille, U1283 - UMR 8199 - EGID, 59000 Lille, France; Université de Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de Risque et Déterminants Moléculaires des Maladies Liées au Vieillissement, 59000 Lille, France.
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Lv C, Sun Y, Zhang ZY, Aboelela Z, Qiu X, Meng ZX. β-cell dynamics in type 2 diabetes and in dietary and exercise interventions. J Mol Cell Biol 2022; 14:6656373. [PMID: 35929791 PMCID: PMC9710517 DOI: 10.1093/jmcb/mjac046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 05/07/2022] [Accepted: 08/03/2022] [Indexed: 01/14/2023] Open
Abstract
Pancreatic β-cell dysfunction and insulin resistance are two of the major causes of type 2 diabetes (T2D). Recent clinical and experimental studies have suggested that the functional capacity of β-cells, particularly in the first phase of insulin secretion, is a primary contributor to the progression of T2D and its associated complications. Pancreatic β-cells undergo dynamic compensation and decompensation processes during the development of T2D, in which metabolic stresses such as endoplasmic reticulum stress, oxidative stress, and inflammatory signals are key regulators of β-cell dynamics. Dietary and exercise interventions have been shown to be effective approaches for the treatment of obesity and T2D, especially in the early stages. Whilst the targeted tissues and underlying mechanisms of dietary and exercise interventions remain somewhat vague, accumulating evidence has implicated the improvement of β-cell functional capacity. In this review, we summarize recent advances in the understanding of the dynamic adaptations of β-cell function in T2D progression and clarify the effects and mechanisms of dietary and exercise interventions on β-cell dysfunction in T2D. This review provides molecular insights into the therapeutic effects of dietary and exercise interventions on T2D, and more importantly, it paves the way for future research on the related underlying mechanisms for developing precision prevention and treatment of T2D.
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Affiliation(s)
- Chengan Lv
- Department of Pathology and Pathophysiology and Metabolic Research Center of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China,Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Yuchen Sun
- Department of Pathology and Pathophysiology and Metabolic Research Center of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China,Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China,Zhejiang University–University of Edinburgh Institute (ZJE), Zhejiang University, Haining 314400, China
| | - Zhe Yu Zhang
- Department of Pathology and Pathophysiology and Metabolic Research Center of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China,Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Zeyad Aboelela
- Department of Pathology and Pathophysiology and Metabolic Research Center of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China,Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China,Bachelors of Surgery, Bachelors of Medicine (MBBS), Zhejiang University School of Medicine, Hangzhou 310003, China
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Brown MR, Matveyenko AV. It's What and When You Eat: An Overview of Transcriptional and Epigenetic Responses to Dietary Perturbations in Pancreatic Islets. Front Endocrinol (Lausanne) 2022; 13:842603. [PMID: 35355560 PMCID: PMC8960041 DOI: 10.3389/fendo.2022.842603] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/07/2022] [Indexed: 01/07/2023] Open
Abstract
Our ever-changing modern environment is a significant contributor to the increased prevalence of many chronic diseases, and particularly, type 2 diabetes mellitus (T2DM). Although the modern era has ushered in numerous changes to our daily living conditions, changes in "what" and "when" we eat appear to disproportionately fuel the rise of T2DM. The pancreatic islet is a key biological controller of an organism's glucose homeostasis and thus plays an outsized role to coordinate the response to environmental factors to preserve euglycemia through a delicate balance of endocrine outputs. Both successful and failed adaptation to dynamic environmental stimuli has been postulated to occur due to changes in the transcriptional and epigenetic regulation of pathways associated with islet secretory function and survival. Therefore, in this review we examined and evaluated the current evidence elucidating the key epigenetic mechanisms and transcriptional programs underlying the islet's coordinated response to the interaction between the timing and the composition of dietary nutrients common to modern lifestyles. With the explosion of next generation sequencing, along with the development of novel informatic and -omic approaches, future work will continue to unravel the environmental-epigenetic relationship in islet biology with the goal of identifying transcriptional and epigenetic targets associated with islet perturbations in T2DM.
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Affiliation(s)
- Matthew R. Brown
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine and Science, Rochester, MN, United States
| | - Aleksey V. Matveyenko
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine and Science, Rochester, MN, United States
- Division of Endocrinology, Metabolism, Diabetes, and Nutrition, Department of Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN, United States
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