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Lahane GP, Dhar A, Bhat A. Therapeutic approaches and novel antifibrotic agents in renal fibrosis: A comprehensive review. J Biochem Mol Toxicol 2024; 38:e23795. [PMID: 39132761 DOI: 10.1002/jbt.23795] [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: 01/25/2024] [Revised: 06/20/2024] [Accepted: 07/24/2024] [Indexed: 08/13/2024]
Abstract
Renal fibrosis (RF) is one of the underlying pathological conditions leading to progressive loss of renal function and end-stage renal disease (ESRD). Over the years, various therapeutic approaches have been explored to combat RF and prevent ESRD. Despite significant advances in understanding the underlying molecular mechanism(s), effective therapeutic interventions for RF are limited. Current therapeutic strategies primarily target these underlying mechanisms to halt or reverse fibrotic progression. Inhibition of transforming growth factor-β (TGF-β) signaling, a pivotal mediator of RF has emerged as a central strategy to manage RF. Small molecules, peptides, and monoclonal antibodies that target TGF-β receptors or downstream effectors have demonstrated potential in preclinical models. Modulating the renin-angiotensin system and targeting the endothelin system also provide established approaches for controlling fibrosis-related hemodynamic changes. Complementary to pharmacological strategies, lifestyle modifications, and dietary interventions contribute to holistic management. This comprehensive review aims to summarize the underlying mechanisms of RF and provide an overview of the therapeutic strategies and novel antifibrotic agents that hold promise in its treatment.
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Affiliation(s)
- Ganesh Panditrao Lahane
- Department of Pharmacy, Birla Institute of Technology and Sciences (BITS) Pilani, Hyderabad, Telangana, India
| | - Arti Dhar
- Department of Pharmacy, Birla Institute of Technology and Sciences (BITS) Pilani, Hyderabad, Telangana, India
| | - Audesh Bhat
- Centre for Molecular Biology, Central University of Jammu, Samba, Jammu and Kashmir, India
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Chen C, Cao Z, Lei H, Zhang C, Wu M, Huang S, Li X, Xie D, Liu M, Zhang L, Chen G. Microbial Tryptophan Metabolites Ameliorate Ovariectomy-Induced Bone Loss by Repairing Intestinal AhR-Mediated Gut-Bone Signaling Pathway. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2404545. [PMID: 39041942 DOI: 10.1002/advs.202404545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 06/03/2024] [Indexed: 07/24/2024]
Abstract
Microbial tryptophan (Trp) metabolites acting as aryl hydrocarbon receptor (AhR) ligands are shown to effectively improve metabolic diseases via regulating microbial community. However, the underlying mechanisms by which Trp metabolites ameliorate bone loss via gut-bone crosstalk are largely unknown. In this study, supplementation with Trp metabolites, indole acetic acid (IAA), and indole-3-propionic acid (IPA), markedly ameliorate bone loss by repairing intestinal barrier integrity in ovariectomy (OVX)-induced postmenopausal osteoporosis mice in an AhR-dependent manner. Mechanistically, intestinal AhR activation by Trp metabolites, especially IAA, effectively repairs intestinal barrier function by stimulating Wnt/β-catenin signaling pathway. Consequently, enhanced M2 macrophage by supplementation with IAA and IPA secrete large amount of IL-10 that expands from intestinal lamina propria to bone marrow, thereby simultaneously promoting osteoblastogenesis and inhibiting osteoclastogenesis in vivo and in vitro. Interestingly, supplementation with Trp metabolites exhibit negligible ameliorative effects on both gut homeostasis and bone loss of OVX mice with intestinal AhR knockout (VillinCreAhrfl/fl). These findings suggest that microbial Trp metabolites may be potential therapeutic candidates against osteoporosis via regulating AhR-mediated gut-bone axis.
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Affiliation(s)
- Chuan Chen
- State Key Laboratory of Magnetic Resonance and Imaging, National Centre for Magnetic Resonance in Wuhan, Innovation Academy of Precision Measurement Science and Technology, CAS, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zheng Cao
- State Key Laboratory of Magnetic Resonance and Imaging, National Centre for Magnetic Resonance in Wuhan, Innovation Academy of Precision Measurement Science and Technology, CAS, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hehua Lei
- State Key Laboratory of Magnetic Resonance and Imaging, National Centre for Magnetic Resonance in Wuhan, Innovation Academy of Precision Measurement Science and Technology, CAS, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Cui Zhang
- State Key Laboratory of Magnetic Resonance and Imaging, National Centre for Magnetic Resonance in Wuhan, Innovation Academy of Precision Measurement Science and Technology, CAS, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Mengjing Wu
- State Key Laboratory of Magnetic Resonance and Imaging, National Centre for Magnetic Resonance in Wuhan, Innovation Academy of Precision Measurement Science and Technology, CAS, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shaohua Huang
- Institute of Drug Discovery and Technology, Ningbo University, Ningbo, 315211, China
| | - Xinzhi Li
- School of Pharmacy and State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, 999078, China
| | - Denghui Xie
- Department of Joint Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510515, China
| | - Maili Liu
- State Key Laboratory of Magnetic Resonance and Imaging, National Centre for Magnetic Resonance in Wuhan, Innovation Academy of Precision Measurement Science and Technology, CAS, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Limin Zhang
- State Key Laboratory of Magnetic Resonance and Imaging, National Centre for Magnetic Resonance in Wuhan, Innovation Academy of Precision Measurement Science and Technology, CAS, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Gang Chen
- Department of Geriatrics, Hubei Provincial Hospital of Traditional Chinese Medicine (Affiliated Hospital of Hubei University of Chinese Medicine), Wuhan, 430060, China
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Kayalar Ö, Rajabi H, Konyalilar N, Mortazavi D, Aksoy GT, Wang J, Bayram H. Impact of particulate air pollution on airway injury and epithelial plasticity; underlying mechanisms. Front Immunol 2024; 15:1324552. [PMID: 38524119 PMCID: PMC10957538 DOI: 10.3389/fimmu.2024.1324552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 02/20/2024] [Indexed: 03/26/2024] Open
Abstract
Air pollution plays an important role in the mortality and morbidity of chronic airway diseases, such as asthma and chronic obstructive pulmonary disease (COPD). Particulate matter (PM) is a significant fraction of air pollutants, and studies have demonstrated that it can cause airway inflammation and injury. The airway epithelium forms the first barrier of defense against inhaled toxicants, such as PM. Airway epithelial cells clear airways from inhaled irritants and orchestrate the inflammatory response of airways to these irritants by secreting various lipid mediators, growth factors, chemokines, and cytokines. Studies suggest that PM plays an important role in the pathogenesis of chronic airway diseases by impairing mucociliary function, deteriorating epithelial barrier integrity, and inducing the production of inflammatory mediators while modulating the proliferation and death of airway epithelial cells. Furthermore, PM can modulate epithelial plasticity and airway remodeling, which play central roles in asthma and COPD. This review focuses on the effects of PM on airway injury and epithelial plasticity, and the underlying mechanisms involving mucociliary activity, epithelial barrier function, airway inflammation, epithelial-mesenchymal transition, mesenchymal-epithelial transition, and airway remodeling.
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Affiliation(s)
- Özgecan Kayalar
- Koç University Research Center for Translational Medicine (KUTTAM), Koç University School of Medicine, Istanbul, Türkiye
| | - Hadi Rajabi
- Koç University Research Center for Translational Medicine (KUTTAM), Koç University School of Medicine, Istanbul, Türkiye
| | - Nur Konyalilar
- Koç University Research Center for Translational Medicine (KUTTAM), Koç University School of Medicine, Istanbul, Türkiye
| | - Deniz Mortazavi
- Koç University Research Center for Translational Medicine (KUTTAM), Koç University School of Medicine, Istanbul, Türkiye
| | - Gizem Tuşe Aksoy
- Koç University Research Center for Translational Medicine (KUTTAM), Koç University School of Medicine, Istanbul, Türkiye
| | - Jun Wang
- Department of Biomedicine and Biopharmacology, School of Biological Engineering and Food, Hubei University of Technology, Wuhan, Hubei, China
| | - Hasan Bayram
- Koç University Research Center for Translational Medicine (KUTTAM), Koç University School of Medicine, Istanbul, Türkiye
- Department of Pulmonary Medicine, School of Medicine, Koç University, Zeytinburnu, Istanbul, Türkiye
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Liu L, Sun Q, Davis F, Mao J, Zhao H, Ma D. Epithelial-mesenchymal transition in organ fibrosis development: current understanding and treatment strategies. BURNS & TRAUMA 2022; 10:tkac011. [PMID: 35402628 PMCID: PMC8990740 DOI: 10.1093/burnst/tkac011] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 12/16/2021] [Indexed: 01/10/2023]
Abstract
Organ fibrosis is a process in which cellular homeostasis is disrupted and extracellular matrix is excessively deposited. Fibrosis can lead to vital organ failure and there are no effective treatments yet. Although epithelial–mesenchymal transition (EMT) may be one of the key cellular mechanisms, the underlying mechanisms of fibrosis remain largely unknown. EMT is a cell phenotypic process in which epithelial cells lose their cell-to-cell adhesion and polarization, after which they acquire mesenchymal features such as infiltration and migration ability. Upon injurious stimulation in different organs, EMT can be triggered by multiple signaling pathways and is also regulated by epigenetic mechanisms. This narrative review summarizes the current understanding of the underlying mechanisms of EMT in fibrogenesis and discusses potential strategies for attenuating EMT to prevent and/or inhibit fibrosis. Despite better understanding the role of EMT in fibrosis development, targeting EMT and beyond in developing therapeutics to tackle fibrosis is challenging but likely feasible.
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Affiliation(s)
- Lexin Liu
- Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, SW10 9NH, UK.,Department of Nephrology and Urology, Pediatric Urolith Center, The Children's Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang Province, 310003, China
| | - Qizhe Sun
- Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, SW10 9NH, UK
| | - Frank Davis
- Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, SW10 9NH, UK
| | - Jianhua Mao
- Department of Nephrology, The Children Hospital of Zhejiang University, School of Medicine, Hangzhou, Zhejiang Province, 310003, China
| | - Hailin Zhao
- Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, SW10 9NH, UK
| | - Daqing Ma
- Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, SW10 9NH, UK
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Zhang Y, Jin D, Kang X, Zhou R, Sun Y, Lian F, Tong X. Signaling Pathways Involved in Diabetic Renal Fibrosis. Front Cell Dev Biol 2021; 9:696542. [PMID: 34327204 PMCID: PMC8314387 DOI: 10.3389/fcell.2021.696542] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 06/08/2021] [Indexed: 12/19/2022] Open
Abstract
Diabetic kidney disease (DKD), as the most common complication of diabetes mellitus (DM), is the major cause of end-stage renal disease (ESRD). Renal interstitial fibrosis is a crucial metabolic change in the late stage of DKD, which is always considered to be complex and irreversible. In this review, we discuss the pathological mechanisms of diabetic renal fibrosis and discussed some signaling pathways that are closely related to it, such as the TGF-β, MAPK, Wnt/β-catenin, PI3K/Akt, JAK/STAT, and Notch pathways. The cross-talks among these pathways were then discussed to elucidate the complicated cascade behind the tubulointerstitial fibrosis. Finally, we summarized the new drugs with potential therapeutic effects on renal fibrosis and listed related clinical trials. The purpose of this review is to elucidate the mechanisms and related pathways of renal fibrosis in DKD and to provide novel therapeutic intervention insights for clinical research to delay the progression of renal fibrosis.
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Affiliation(s)
- Yuqing Zhang
- Endocrinology Department, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - De Jin
- Endocrinology Department, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaomin Kang
- Endocrinology Department, Guang'anmen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Rongrong Zhou
- Endocrinology Department, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuting Sun
- Endocrinology Department, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Fengmei Lian
- Endocrinology Department, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaolin Tong
- Endocrinology Department, Affiliated Hospital to Changchun University of Chinese Medicine, Changchun University of Chinese Medicine, Changchun, China
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Yang H, Qin D, Xu S, He C, Sun J, Hua J, Peng S. Folic acid promotes proliferation and differentiation of porcine pancreatic stem cells into insulin-secreting cells through canonical Wnt and ERK signaling pathway. J Steroid Biochem Mol Biol 2021; 205:105772. [PMID: 33091596 DOI: 10.1016/j.jsbmb.2020.105772] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 09/29/2020] [Accepted: 10/04/2020] [Indexed: 11/16/2022]
Abstract
Porcine pancreatic stem cells (pPSCs) can be induced to differentiate into insulin-producing cells in vitro and thus serve as a major cells source for β-cell regeneration. However, this application is limited by the weak cell proliferation ability and low insulin induction efficiency. In this study, we explored the role of folic acid in the proliferation of pPSCs and the formation of insulin-secreting cells. We found that FA-treated pPSCs cells had a high EDU positive rate, and the proliferation marker molecules PCNA, CyclinD1 and c-Myc were up-regulated, while the expression of folate receptor α (FOLRα) was up-regulated. In further research, interference FOLRα or adding canonical Wnt signaling pathway or ERK signaling pathway inhibitors could significantly inhibit the effect of FA on pPSCs proliferation. Meanwhile, during the differentiation of pPSCs into insulin-secreting cells, we found that the maturation marker genes Insulin, NKX6.1, MafA, and NeuroD1 was upregulated in insulin-secreting cell masses differentiationed from pPSCs after FA treatment, and the functional molecules Insulin and C-peptide were increased, the ability to secrete insulin in response to high glucose was also increased. With the addition of Wnt and ERK signaling pathway inhibitors, the pro-differentiation effect of FA was weakened. In conclusion, FA promotes the proliferation of pPSCs by binding to folate receptor α (FOLRα) and increase the efficiency of directed differentiation of pPSCs into insulin-producing cells by regulating canonical Wnt and ERK signaling pathway. This study lays theoretical foundation for solving the bottleneck in the treatment of diabetes with stem cell transplantation in future.
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Affiliation(s)
- Hong Yang
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Dezhe Qin
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Shuanshuan Xu
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Chen He
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jing Sun
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jinlian Hua
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Sha Peng
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
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Sferrazza G, Corti M, Brusotti G, Pierimarchi P, Temporini C, Serafino A, Calleri E. Nature-derived compounds modulating Wnt/ β -catenin pathway: a preventive and therapeutic opportunity in neoplastic diseases. Acta Pharm Sin B 2020; 10:1814-1834. [PMID: 33163337 PMCID: PMC7606110 DOI: 10.1016/j.apsb.2019.12.019] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 11/08/2019] [Accepted: 11/08/2019] [Indexed: 02/07/2023] Open
Abstract
The Wnt/β-catenin signaling is a conserved pathway that has a crucial role in embryonic and adult life. Dysregulation of the Wnt/β-catenin pathway has been associated with diseases including cancer, and components of the signaling have been proposed as innovative therapeutic targets, mainly for cancer therapy. The attention of the worldwide researchers paid to this issue is increasing, also in view of the therapeutic potential of these agents in diseases, such as Parkinson's disease (PD), for which no cure is existing today. Much evidence indicates that abnormal Wnt/β-catenin signaling is involved in tumor immunology and the targeting of Wnt/β-catenin pathway has been also proposed as an attractive strategy to potentiate cancer immunotherapy. During the last decade, several products, including naturally occurring dietary agents as well as a wide variety of products from plant sources, including curcumin, quercetin, berberin, and ginsenosides, have been identified as potent modulators of the Wnt/β-catenin signaling and have gained interest as promising candidates for the development of chemopreventive or therapeutic drugs for cancer. In this review we make an overview of the nature-derived compounds reported to have antitumor activity by modulating the Wnt/β-catenin signaling, also focusing on extraction methods, chemical features, and bio-activity assays used for the screening of these compounds.
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Affiliation(s)
- Gianluca Sferrazza
- Institute of Translational Pharmacology, National Research Council of Italy, Rome 03018, Italy
| | - Marco Corti
- Department of Drug Sciences, University of Pavia, Pavia 27100, Italy
| | - Gloria Brusotti
- Department of Drug Sciences, University of Pavia, Pavia 27100, Italy
| | - Pasquale Pierimarchi
- Institute of Translational Pharmacology, National Research Council of Italy, Rome 03018, Italy
| | | | - Annalucia Serafino
- Institute of Translational Pharmacology, National Research Council of Italy, Rome 03018, Italy
| | - Enrica Calleri
- Department of Drug Sciences, University of Pavia, Pavia 27100, Italy
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Diabetes Mellitus and Hypertension-A Case of Sugar and Salt? Int J Mol Sci 2020; 21:ijms21155200. [PMID: 32708014 PMCID: PMC7432106 DOI: 10.3390/ijms21155200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/20/2020] [Accepted: 07/21/2020] [Indexed: 12/29/2022] Open
Abstract
The majority of patients with diabetes mellitus (DM) have hypertension (HTN). A specific mechanism for the development of HTN in DM has not been described. In the Zucker, Endothel, und Salz (sugar, endothelium, and salt) study (ZEuS), indices of glucose metabolism and of volume regulation are recorded. An analysis of these parameters shows that glucose concentrations interfere with plasma osmolality and that changes in glycemic control have a significant impact on fluid status and blood pressure. The results of this study are discussed against the background of the striking similarities between the regulation of sugar and salt blood concentrations, introducing the view that DM is probably a sodium-retention disorder that leads to a state of hypervolemia.
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Serafino A, Giovannini D, Rossi S, Cozzolino M. Targeting the Wnt/β-catenin pathway in neurodegenerative diseases: recent approaches and current challenges. Expert Opin Drug Discov 2020; 15:803-822. [PMID: 32281421 DOI: 10.1080/17460441.2020.1746266] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
INTRODUCTION Wnt/β-catenin signaling is an evolutionarily conserved pathway having a crucial role in embryonic and adult life. Specifically, the Wnt/β-catenin axis is pivotal to the development and homeostasis of the nervous system, and its dysregulation has been associated with various neurological disorders, including neurodegenerative diseases. Therefore, this signaling pathway has been proposed as a potential therapeutic target against neurodegeneration. AREAS COVERED This review focuses on the role of Wnt/β-catenin pathway in the pathogenesis of neurodegenerative diseases, including Parkinson's, Alzheimer's Diseases and Amyotrophic Lateral Sclerosis. The evidence showing that defects in the signaling might be involved in the development of these diseases, and the pharmacological approaches tested so far, are discussed. The possibilities that this pathway offers in terms of new therapeutic opportunities are also considered. EXPERT OPINION The increasing interest paid to the role of Wnt/β-catenin pathway in the onset of neurodegenerative diseases demonstrates how targeting this signaling for therapeutic purposes could be a great opportunity for both neuroprotection and neurorepair. Without overlooking some licit concerns about drug safety and delivery to the brain, there is growing and more convincing evidence that restoring this signaling in neurodegenerative diseases may strongly increase the chance to develop disease-modifying treatments for these brain pathologies.
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Affiliation(s)
- Annalucia Serafino
- Institute of Translational Pharmacology, National Research Council (CNR) , Rome, Italy
| | - Daniela Giovannini
- Institute of Translational Pharmacology, National Research Council (CNR) , Rome, Italy
| | - Simona Rossi
- Institute of Translational Pharmacology, National Research Council (CNR) , Rome, Italy
| | - Mauro Cozzolino
- Institute of Translational Pharmacology, National Research Council (CNR) , Rome, Italy
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Harris KL, Myers MB, McKim KL, Elespuru RK, Parsons BL. Rationale and Roadmap for Developing Panels of Hotspot Cancer Driver Gene Mutations as Biomarkers of Cancer Risk. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2020; 61:152-175. [PMID: 31469467 PMCID: PMC6973253 DOI: 10.1002/em.22326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/23/2019] [Accepted: 08/26/2019] [Indexed: 05/24/2023]
Abstract
Cancer driver mutations (CDMs) are necessary and causal for carcinogenesis and have advantages as reporters of carcinogenic risk. However, little progress has been made toward developing measurements of CDMs as biomarkers for use in cancer risk assessment. Impediments for using a CDM-based metric to inform cancer risk include the complexity and stochastic nature of carcinogenesis, technical difficulty in quantifying low-frequency CDMs, and lack of established relationships between cancer driver mutant fractions and tumor incidence. Through literature review and database analyses, this review identifies the most promising targets to investigate as biomarkers of cancer risk. Mutational hotspots were discerned within the 20 most mutated genes across the 10 deadliest cancers. Forty genes were identified that encompass 108 mutational hotspot codons overrepresented in the COSMIC database; 424 different mutations within these hotspot codons account for approximately 63,000 tumors and their prevalence across tumor types is described. The review summarizes literature on the prevalence of CDMs in normal tissues and suggests such mutations are direct and indirect substrates for chemical carcinogenesis, which occurs in a spatially stochastic manner. Evidence that hotspot CDMs (hCDMs) frequently occur as tumor subpopulations is presented, indicating COSMIC data may underestimate mutation prevalence. Analyses of online databases show that genes containing hCDMs are enriched in functions related to intercellular communication. In its totality, the review provides a roadmap for the development of tissue-specific, CDM-based biomarkers of carcinogenic potential, comprised of batteries of hCDMs and can be measured by error-correct next-generation sequencing. Environ. Mol. Mutagen. 61:152-175, 2020. Published 2019. This article is a U.S. Government work and is in the public domain in the USA. Environmental and Molecular Mutagenesis published by Wiley Periodicals, Inc. on behalf of Environmental Mutagen Society.
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Affiliation(s)
- Kelly L. Harris
- Division of Genetic and Molecular ToxicologyNational Center for Toxicological Research, US Food and Drug AdministrationJeffersonArkansas
| | - Meagan B. Myers
- Division of Genetic and Molecular ToxicologyNational Center for Toxicological Research, US Food and Drug AdministrationJeffersonArkansas
| | - Karen L. McKim
- Division of Genetic and Molecular ToxicologyNational Center for Toxicological Research, US Food and Drug AdministrationJeffersonArkansas
| | - Rosalie K. Elespuru
- Division of Biology, Chemistry and Materials ScienceCDRH/OSEL, US Food and Drug AdministrationSilver SpringMaryland
| | - Barbara L. Parsons
- Division of Genetic and Molecular ToxicologyNational Center for Toxicological Research, US Food and Drug AdministrationJeffersonArkansas
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Ferreira MC, da Silva MER, Fukui RT, do Carmo Arruda-Marques M, Azhar S, dos Santos RF. Effect of TCF7L2 polymorphism on pancreatic hormones after exenatide in type 2 diabetes. Diabetol Metab Syndr 2019; 11:10. [PMID: 30700996 PMCID: PMC6347826 DOI: 10.1186/s13098-019-0401-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 01/17/2019] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Glucagon-like peptide 1 (GLP-1) stimulates insulin secretion and reduces blood glucose in type 2 diabetes mellitus (T2DM). TCF7L2 rs7903146 polymorphism has been associated with decreased insulin secretion, reduced GLP-1 action, and possible impaired peripheral insulin sensitivity. OBJECTIVES To evaluate the postprandial pancreatic hormone response in patients with T2DM carriers of the TCF7L2 variant rs7903146 (CT/TT) compared with noncarriers of this variant (CC) after treatment with the GLP-1 agonist exenatide. METHODS Intervention study. Patients with T2DM (n = 162) were genotyped for the TCF7L2 rs7903146 single nucleotide polymorphism (SNP). Individuals with CT/TT and CC genotypes were compared regarding basal serum levels of glucose, glycosylated hemoglobin A1C (HbA1c), HDL, uric acid, insulin, and C-peptide. A subset of 56 individuals was evaluated during a 500-calorie mixed-meal test with measurements of glucose, insulin, proinsulin, C-peptide and glucagon before and after treatment with exenatide for 8 weeks. RESULTS Patients with genotypes CC and CT/TT presented similar glucose area under the curve (AUC) 0-180 min before treatment and a similar decrease after treatment (p < 0.001). Before exenatide, insulin levels at 30-120 min were higher in CT/TT versus CC subjects (p < 0.05). After treatment with exenatide, only CT/TT individuals demonstrated insulin reduction at 30-180 min during the meal test (p < 0.05). Patients with the CC genotype presented no differences in insulin concentrations before and after treatment. The areas under the glucagon curve between 0 and 180 min were similar before treatment and reduced after treatment in both groups (p < 0.001). CONCLUSIONS The presence of the TCF7L2 rs7903146 T allele in patients with T2DM was associated with increased secretion of insulin response to a mixed-meal test. Furthermore, after treatment with exenatide, only the carriers of the T allele showed significantly decreased postprandial plasma insulin peak levels comparing with non carriers.
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Affiliation(s)
- Mari Cassol Ferreira
- School of Medicine, Unochapeco University, Chapeco, Santa Catarina Brazil
- School of Medicine, University of Sao Paulo, São Paulo, Brazil
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Duan J, Qian XL, Li J, Xiao XH, Lu XT, Lv LC, Huang QY, Ding W, Zhang HY, Xiong LX. miR-29a Negatively Affects Glucose-Stimulated Insulin Secretion and MIN6 Cell Proliferation via Cdc42/ β-Catenin Signaling. Int J Endocrinol 2019; 2019:5219782. [PMID: 31662747 PMCID: PMC6735210 DOI: 10.1155/2019/5219782] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 06/13/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Diabetes is a progressive metabolic disease characterized by hyperglycemia. Functional impairment of islet β cells can occur to varying degrees. This impairment can initially be compensated for by proliferation and metabolic changes of β cells. Cell division control protein 42 (Cdc42) and the microRNA (miRNA) miR-29 have important roles in β-cell proliferation and glucose-stimulated insulin secretion (GSIS), which we further explored using the mouse insulinoma cell line MIN6. METHODS Upregulation and downregulation of miR-29a and Cdc42 were accomplished using transient transfection. miR-29a and Cdc42 expression was detected by real-time PCR and western blotting. MIN6 proliferation was detected using a cell counting kit assay. GSIS under high-glucose (20.0 mM) or basal-glucose (5.0 mM) stimulation was detected by enzyme-linked immunosorbent assay. The miR-29a binding site in the Cdc42 mRNA 3'-untranslated region (UTR) was determined using bioinformatics and luciferase reporter assays. RESULTS miR-29a overexpression inhibited proliferation (P < 0.01) and GSIS under high-glucose stimulation (P < 0.01). Cdc42 overexpression promoted proliferation (P < 0.05) and GSIS under high-glucose stimulation (P < 0.05). miR-29a overexpression decreased Cdc42 expression (P < 0.01), whereas miR-29a downregulation increased Cdc42 expression (P < 0.01). The results showed that the Cdc42 mRNA 3'-UTR is a direct target of miR-29a in vitro. Additionally, Cdc42 reversed miR-29a-mediated inhibition of proliferation and GSIS (P < 0.01). Furthermore, miR-29a inhibited β-catenin expression (P < 0.01), whereas Cdc42 promoted β-catenin expression (P < 0.01). CONCLUSION By negatively regulating Cdc42 and the downstream molecule β-catenin, miR-29a inhibits MIN6 proliferation and insulin secretion.
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Affiliation(s)
- Jing Duan
- Department of Pathophysiology, Medical College, Nanchang University, 461 Bayi Road, Nanchang 330006, China
| | - Xian-Ling Qian
- Department of Pathophysiology, Medical College, Nanchang University, 461 Bayi Road, Nanchang 330006, China
| | - Jun Li
- Department of Pathophysiology, Medical College, Nanchang University, 461 Bayi Road, Nanchang 330006, China
| | - Xing-Hua Xiao
- Department of Pathophysiology, Medical College, Nanchang University, 461 Bayi Road, Nanchang 330006, China
| | - Xiang-Tong Lu
- Department of Pathology, Second Affiliated Hospital, Nanchang University, No. 1 Mingde Road, Nanchang 330006, China
| | - Lin-Chen Lv
- Department of Pathophysiology, Medical College, Nanchang University, 461 Bayi Road, Nanchang 330006, China
| | - Qing-Yun Huang
- Department of Pathophysiology, Medical College, Nanchang University, 461 Bayi Road, Nanchang 330006, China
| | - Wen Ding
- Department of Pathophysiology, Medical College, Nanchang University, 461 Bayi Road, Nanchang 330006, China
| | - Hong-Yan Zhang
- Department of Burn, The First Affiliated Hospital, Nanchang University, 17 Yongwaizheng Road, Nanschang 330066, China
| | - Li-Xia Xiong
- Department of Pathophysiology, Medical College, Nanchang University, 461 Bayi Road, Nanchang 330006, China
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13
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Qiao GY, Dong BW, Zhu CJ, Yan CY, Chen BL. Deregulation of WNT2/FZD3/β-catenin pathway compromises the estrogen synthesis in cumulus cells from patients with polycystic ovary syndrome. Biochem Biophys Res Commun 2017; 493:847-854. [DOI: 10.1016/j.bbrc.2017.07.057] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 07/10/2017] [Indexed: 11/17/2022]
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14
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Ying Q, Wu G. Molecular mechanisms involved in podocyte EMT and concomitant diabetic kidney diseases: an update. Ren Fail 2017; 39:474-483. [PMID: 28413908 PMCID: PMC6014344 DOI: 10.1080/0886022x.2017.1313164] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Epithelial–mesenchymal transition (EMT) is a tightly regulated process by which epithelial cells lose their hallmark epithelial characteristics and gain the features of mesenchymal cells. For podocytes, expression of nephrin, podocin, P-cadherin, and ZO-1 is downregulated, the slit diaphragm (SD) will be altered, and the actin cytoskeleton will be rearranged. Diabetes, especially hyperglycemia, has been demonstrated to incite podocyte EMT through several molecular mechanisms such as TGF-β/Smad classic pathway, Wnt/β-catenin signaling pathway, Integrins/integrin-linked kinase (ILK) signaling pathway, MAPKs signaling pathway, Jagged/Notch signaling pathway, and NF-κB signaling pathway. As one of the most fundamental prerequisites to develop ground-breaking therapeutic options to prevent the development and progression of diabetic kidney disease (DKD), a comprehensive understanding of the molecular mechanisms involved in the pathogenesis of podocyte EMT is compulsory. Therefore, the purpose of this paper is to update the research progress of these underlying signaling pathways and expound the podocyte EMT-related DKDs.
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Affiliation(s)
- Qidi Ying
- a Department of Pharmacology, Pharmacy , China Pharmaceutical University , Nanjing , Jiangsu , China
| | - Guanzhong Wu
- a Department of Pharmacology, Pharmacy , China Pharmaceutical University , Nanjing , Jiangsu , China
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15
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Ren L, Yang H, Cui Y, Xu S, Sun F, Tian N, Hua J, Peng S. Autophagy is essential for the differentiation of porcine PSCs into insulin-producing cells. Biochem Biophys Res Commun 2017; 488:471-476. [PMID: 28501624 DOI: 10.1016/j.bbrc.2017.05.058] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 05/09/2017] [Indexed: 12/21/2022]
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16
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Schwafertz C, Schinner S, Kühn MC, Haase M, Asmus A, Mülders-Opgenoorth B, Ansurudeen I, Hornsby PJ, Morawietz H, Oetjen E, Schott M, Willenberg HS. Endothelial cells regulate β-catenin activity in adrenocortical cells via secretion of basic fibroblast growth factor. Mol Cell Endocrinol 2017; 441:108-115. [PMID: 27889473 DOI: 10.1016/j.mce.2016.11.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 11/17/2016] [Accepted: 11/20/2016] [Indexed: 12/20/2022]
Abstract
Endothelial cell-derived products influence the synthesis of aldosterone and cortisol in human adrenocortical cells by modulating proteins such as steroidogenic acute-regulatory (StAR) protein, steroidogenic factor (SF)-1 and CITED2. However, the potential endothelial cell-derived factors that mediate this effect are still unknown. The current study was perfomed to look into the control of β-catenin activity by endothelial cell-derived factors and to identify a mechanism by which they affect β-catenin activity in adrenocortical NCIH295R cells. Using reporter gene assays and Western blotting, we found that endothelial cell-conditioned medium (ECCM) led to nuclear translocation of β-catenin and an increase in β-catenin-dependent transcription that could be blocked by U0126, an inhibitor of the mitogen-activated protein kinase pathway. Furthermore, we found that a receptor tyrosin kinase (RTK) was involved in ECCM-induced β-catenin-dependent transcription. Through selective inhibition of RTK using Su5402, it was shown that receptors responding to basic fibroblast growth factor (bFGF) mediate the action of ECCM. Adrenocortical cells treated with bFGF showed a significant greater level of bFGF mRNA. In addition, HUVECs secrete bFGF in a density-dependent manner. In conclusion, the data suggest that endothelial cells regulate β-catenin activity in adrenocortical cells also via secretion of basic fibroblast growth factor.
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Affiliation(s)
- Carolin Schwafertz
- Division for Specific Endocrinology, Medical Faculty, Heinrich-Heine University Dusseldorf, D-40225 Dusseldorf, Germany
| | - Sven Schinner
- Division for Specific Endocrinology, Medical Faculty, Heinrich-Heine University Dusseldorf, D-40225 Dusseldorf, Germany
| | - Markus C Kühn
- Division for Specific Endocrinology, Medical Faculty, Heinrich-Heine University Dusseldorf, D-40225 Dusseldorf, Germany
| | - Matthias Haase
- Division for Specific Endocrinology, Medical Faculty, Heinrich-Heine University Dusseldorf, D-40225 Dusseldorf, Germany; Department of Medicine III, Carl Gustav Carus Medical School, University of Technology, D-01307 Dresden, Germany
| | - Amelie Asmus
- Division for Specific Endocrinology, Medical Faculty, Heinrich-Heine University Dusseldorf, D-40225 Dusseldorf, Germany
| | - Birgit Mülders-Opgenoorth
- Division for Specific Endocrinology, Medical Faculty, Heinrich-Heine University Dusseldorf, D-40225 Dusseldorf, Germany
| | - Ishrath Ansurudeen
- Department of Medicine III, Carl Gustav Carus Medical School, University of Technology, D-01307 Dresden, Germany; Department of Molecular Medicine and Surgery, L1:01 Rolf Luft Centrum, Karolinska Institute, Stockholm, Sweden
| | - Peter J Hornsby
- Department of Physiology and Sam and Ann Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center, San Antonio, TX, USA
| | - Henning Morawietz
- Department of Medicine III, Carl Gustav Carus Medical School, University of Technology, D-01307 Dresden, Germany
| | - Elke Oetjen
- Department of Clinical Pharmacology and Toxicology, Pharmacology for Pharmacist's Unit, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Matthias Schott
- Division for Specific Endocrinology, Medical Faculty, Heinrich-Heine University Dusseldorf, D-40225 Dusseldorf, Germany
| | - Holger S Willenberg
- Division for Specific Endocrinology, Medical Faculty, Heinrich-Heine University Dusseldorf, D-40225 Dusseldorf, Germany; Division of Endocrinology and Metabolism, Rostock University Medical Center, Germany.
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Serafino A, Sferrazza G, Colini Baldeschi A, Nicotera G, Andreola F, Pittaluga E, Pierimarchi P. Developing drugs that target the Wnt pathway: recent approaches in cancer and neurodegenerative diseases. Expert Opin Drug Discov 2016; 12:169-186. [PMID: 27960558 DOI: 10.1080/17460441.2017.1271321] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Wnt/β-catenin signaling is an evolutionarily conserved pathway that has a crucial role in embryonic and adult life. Dysregulation of Wnt/β-catenin pathway has been associated with various diseases, including cancer and neurodegenerative disorders, including Parkinson's disease (PD). Several molecular components of the signaling have been proposed as innovative targets for cancer therapy, and very recently, some of them have been also evaluated as potential therapeutic targets for PD. Areas covered: This review focuses on the role of Wnt/β-catenin pathway in the pathogenensis of cancer and PD, examining some recent therapeutic approaches that are ongoing in preclinical and clinical studies. The possibilities that this signaling offers for diagnosis and prognosis of neoplastic diseases, and the concerns of targeting this pathway are also discussed. Expert opinion: Despite the stimulating results obtained in preclinical studies on cancer and other disease models, the clinical experience with Wnt modulators is still in its infancy, and is mainly restricted to anticancer therapy. Even with concerns of the safety of drugs targeting Wnt signaling, the attention of researchers worldwide is increasing to this issue in terms of their therapeutic potential for diseases such as PD, for which no cure exists.
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Affiliation(s)
- Annalucia Serafino
- a Institute of Translational Pharmacology , National Research Council (CNR) , Rome , Italy
| | - Gianluca Sferrazza
- a Institute of Translational Pharmacology , National Research Council (CNR) , Rome , Italy
| | | | - Giuseppe Nicotera
- a Institute of Translational Pharmacology , National Research Council (CNR) , Rome , Italy
| | - Federica Andreola
- a Institute of Translational Pharmacology , National Research Council (CNR) , Rome , Italy
| | - Eugenia Pittaluga
- a Institute of Translational Pharmacology , National Research Council (CNR) , Rome , Italy
| | - Pasquale Pierimarchi
- a Institute of Translational Pharmacology , National Research Council (CNR) , Rome , Italy
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18
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Liu X, Yun F, Shi L, Li ZH, Luo NR, Jia YF. Roles of Signaling Pathways in the Epithelial-Mesenchymal Transition in Cancer. Asian Pac J Cancer Prev 2016; 16:6201-6. [PMID: 26434817 DOI: 10.7314/apjcp.2015.16.15.6201] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The epithelial-mesenchymal transition (EMT) is a cellular process though which an epithelial phenotype can be converted into a phenotype of mesenchymal cells. Under physiological conditions EMT is important for embryogenesis, organ development, wound repair and tissue remodeling. However, EMT may also be activated under pathologic conditions, especially in carcinogenesis and metastatic progression. Major signaling pathways involved in EMT include transforming growth factor β(TGF-β), Wnt, Notch, Hedgehog and other signaling pathways. These pathways are related to several transcription factors, including Twist, Smads and zinc finger proteins snail and slug. These interact with each other to provide crosstalk between the relevant signaling pathways. This review lays emphasis on studying the relationship between EMT and signaling pathways in carcinogenesis and metastatic progression.
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Affiliation(s)
- Xia Liu
- Department of Pathology, The First Affiliated Hospital of Inner Mongolia Medical University, Huhhot, China E-mail :
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Carstensen-Kirberg M, Hatziagelaki E, Tsiavou A, Chounta A, Nowotny P, Pacini G, Dimitriadis G, Roden M, Herder C. Sfrp5 associates with beta-cell function in humans. Eur J Clin Invest 2016; 46:535-43. [PMID: 27019073 DOI: 10.1111/eci.12629] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 03/27/2016] [Indexed: 12/23/2022]
Abstract
BACKGROUND Secreted frizzled-related protein (Sfrp)5 improves insulin sensitivity, but impairs beta-cell function in rodents. However, the relationship between Sfrp5, insulin sensitivity and secretion in humans is currently unclear. Therefore, the aim of the study was to characterize the associations between serum Sfrp5 and indices of insulin sensitivity and beta-cell function from dynamic measurements using oral glucose tolerance tests (OGTT) in humans. MATERIAL AND METHODS This study enrolled 194 individuals with nonalcoholic fatty liver disease (NAFLD), who were diagnosed based on ultrasound and liver transaminases and underwent a frequent sampling 75-g OGTT. Fasting serum Sfrp5 was measured by ELISA. Associations were assessed with several indices of insulin sensitivity and beta-cell function derived from glucose, insulin and C-peptide concentrations during the OGTT. RESULTS Circulating Sfrp5 associated inversely with the insulinogenic index based on C-peptide (rs = -0·244, P = 0·001), but not with the insulinogenic index based on insulin levels (rs = -0·007, P = 0·926) after adjustment for age, sex and body mass index. Sfrp5 inversely correlated only with QUICKI as a marker of insulin sensitivity in the model adjusted for age and sex (rs = -0·149, P = 0·039). These associations were not influenced by the additional adjustment for hepatic steatosis index. CONCLUSIONS The inverse association of serum Sfrp5 with beta-cell function suggests a detrimental role of Sfrp5 for insulin secretion also in humans. The severity of NAFLD does not appear to affect this relationship. The weak association between serum Sfrp5 and insulin sensitivity was partially explained by body mass.
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Affiliation(s)
- Maren Carstensen-Kirberg
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany.,German Center for Diabetes Research (DZD), München-Neuherberg, Germany
| | - Erifili Hatziagelaki
- 2nd Department of Internal Medicine, Research Institute and Diabetes Center, Athens University, 'Attikon' University General Hospital, Athens, Greece
| | - Anastasia Tsiavou
- 2nd Department of Internal Medicine, Research Institute and Diabetes Center, Athens University, 'Attikon' University General Hospital, Athens, Greece
| | - Athina Chounta
- 4th Department of Internal Medicine, 'Attikon' University General Hospital, Athens, Greece
| | - Peter Nowotny
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany.,German Center for Diabetes Research (DZD), München-Neuherberg, Germany
| | - Giovanni Pacini
- Metabolic Unit, CNR Neuroscience Institute, National Research Council, Padova, Italy
| | - George Dimitriadis
- 2nd Department of Internal Medicine, Research Institute and Diabetes Center, Athens University, 'Attikon' University General Hospital, Athens, Greece
| | - Michael Roden
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany.,German Center for Diabetes Research (DZD), München-Neuherberg, Germany.,Department of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Christian Herder
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany.,German Center for Diabetes Research (DZD), München-Neuherberg, Germany
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20
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Dorfman T, Pollak Y, Sohotnik R, Coran AG, Bejar J, Sukhotnik I. Enhanced intestinal epithelial cell proliferation in diabetic rats correlates with β-catenin accumulation. J Endocrinol 2015; 226:135-43. [PMID: 26297291 DOI: 10.1530/joe-14-0725] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The Wnt/β-catenin signaling cascade is implicated in the control of stem cell activity, cell proliferation, and cell survival of the gastrointestinal epithelium. Recent evidence indicates that the Wnt/β-catenin pathway is activated under diabetic conditions. The purpose of this study was to evaluate the role of Wnt/β-catenin signaling during diabetes-induced enteropathy in a rat model. Male rats were divided into three groups: control rats received injections of vehicle; diabetic rats received injections of one dose of streptozotocin (STZ); and diabetic-insulin rats received injections of STZ and were treated with insulin given subcutaneously at a dose of 1 U/kg twice daily. Rats were killed on day 7. Wnt/β-catenin-related genes and expression of proteins was determined using real-time PCR, western blotting, and immunohistochemistry. Among 13 genes identified by real-time PCR, seven genes were upregulated in diabetic rats compared with control animals including the target genes c-Myc and Tcf4. Diabetic rats also showed a significant increase in β-catenin protein compared with control animals. Treatment of diabetic rats attenuated the stimulating effect of diabetes on intestinal cell proliferation and Wnt/β-catenin signaling. In conclusion, enhanced intestinal epithelial cell proliferation in diabetic rats correlates with β-catenin accumulation.
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Affiliation(s)
- Tatiana Dorfman
- Laboratory of Intestinal Adaptation and RecoveryThe Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, IsraelDepartments of Pediatric Surgery BPathologyBnai Zion Medical Center, 47 Golomb Street, PO Box 4940, Haifa 31048, IsraelSection of Pediatric SurgeryC.S. Mott Children's Hospital, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Yulia Pollak
- Laboratory of Intestinal Adaptation and RecoveryThe Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, IsraelDepartments of Pediatric Surgery BPathologyBnai Zion Medical Center, 47 Golomb Street, PO Box 4940, Haifa 31048, IsraelSection of Pediatric SurgeryC.S. Mott Children's Hospital, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Rima Sohotnik
- Laboratory of Intestinal Adaptation and RecoveryThe Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, IsraelDepartments of Pediatric Surgery BPathologyBnai Zion Medical Center, 47 Golomb Street, PO Box 4940, Haifa 31048, IsraelSection of Pediatric SurgeryC.S. Mott Children's Hospital, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Arnold G Coran
- Laboratory of Intestinal Adaptation and RecoveryThe Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, IsraelDepartments of Pediatric Surgery BPathologyBnai Zion Medical Center, 47 Golomb Street, PO Box 4940, Haifa 31048, IsraelSection of Pediatric SurgeryC.S. Mott Children's Hospital, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Jacob Bejar
- Laboratory of Intestinal Adaptation and RecoveryThe Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, IsraelDepartments of Pediatric Surgery BPathologyBnai Zion Medical Center, 47 Golomb Street, PO Box 4940, Haifa 31048, IsraelSection of Pediatric SurgeryC.S. Mott Children's Hospital, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Igor Sukhotnik
- Laboratory of Intestinal Adaptation and RecoveryThe Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, IsraelDepartments of Pediatric Surgery BPathologyBnai Zion Medical Center, 47 Golomb Street, PO Box 4940, Haifa 31048, IsraelSection of Pediatric SurgeryC.S. Mott Children's Hospital, University of Michigan Medical School, Ann Arbor, Michigan, USA Laboratory of Intestinal Adaptation and RecoveryThe Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, IsraelDepartments of Pediatric Surgery BPathologyBnai Zion Medical Center, 47 Golomb Street, PO Box 4940, Haifa 31048, IsraelSection of Pediatric SurgeryC.S. Mott Children's Hospital, University of Michigan Medical School, Ann Arbor, Michigan, USA
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21
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Thomé JG, Mendoza MR, Cheuiche AV, La Porta VL, Silvello D, Dos Santos KG, Andrades ME, Clausell N, Rohde LE, Biolo A. Circulating microRNAs in obese and lean heart failure patients: A case-control study with computational target prediction analysis. Gene 2015. [PMID: 26211628 DOI: 10.1016/j.gene.2015.07.068] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
AIMS MicroRNAs (miRs) regulate processes involved in both cardiac remodeling and obesity. We investigated if the expression of selected miRs in patients with heart failure (HF) is influenced by the presence of obesity. METHODS In this case-control study, we compared plasma levels of miR-21, -130b, -221, -423-5p, and the -221/-130b ratio in 57 age- and gender-matched subjects: 40 HF patients (20 obese HF and 20 lean HF) and 17 lean healthy controls. Body composition was estimated by bioelectrical impedance analysis. MiRs were measured by quantitative reverse transcription-PCR. Bioinformatics analysis was performed based on miRs findings to predict their putative targets and investigate their biological function. RESULTS HF was associated with increased miR-423-5p levels in both lean and obese patients (P<0.05 vs. controls) without differences between HF groups. MiR-130b levels were reduced in obese HF patients compared with HF lean (P=0.036) and controls (P=0.025). MiR-221 levels were non-significantly increased in obese HF patients. MiR-21 levels were not different among the groups. MiR-221/-130b ratio was increased in obese HF patients, and was positively associated with body fat percentage (r=0.43; P=0.002), body mass index (r=0.44; P=0.002), and waist circumference (r=0.40; P=0.020). Computational prediction of target genes followed by functional enrichment analysis indicated a relevant role of miR-130b and miR-221 in modulating the expression of genes associated to cardiovascular and endocrine diseases, and suggested their influence in important signaling mechanisms and in numerous processes related to the circulatory and endocrine systems. CONCLUSIONS In HF patients, the presence of obesity is associated with a differential expression of selected miRs and the miR-221/-130b ratio had significant correlations with adiposity parameters. Computational target prediction analysis identified several interrelated pathways targeted by miR-130b and miR-221 with a known relationship with endocrine and cardiovascular diseases, representing potential mechanisms to be further validated.
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Affiliation(s)
- Juliana Gil Thomé
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Mariana Recamonde Mendoza
- Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Amanda Veiga Cheuiche
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Vanessa Laubert La Porta
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil; Heart Failure and Cardiac Transplant Unit, Cardiology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Daiane Silvello
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Kátia Gonçalves Dos Santos
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil; Laboratory of Human Molecular Genetics, Universidade Luterana do Brasil, Canoas, RS, Brazil
| | - Michael Everton Andrades
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Nadine Clausell
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil; Heart Failure and Cardiac Transplant Unit, Cardiology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Luis Eduardo Rohde
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil; Heart Failure and Cardiac Transplant Unit, Cardiology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Andréia Biolo
- Post-Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Experimental and Molecular Cardiovascular Laboratory, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil; Heart Failure and Cardiac Transplant Unit, Cardiology Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.
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Combination effects of AHR agonists and Wnt/β-catenin modulators in zebrafish embryos: Implications for physiological and toxicological AHR functions. Toxicol Appl Pharmacol 2015; 284:163-79. [PMID: 25711857 DOI: 10.1016/j.taap.2015.02.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Accepted: 02/13/2015] [Indexed: 12/30/2022]
Abstract
Wnt/β-catenin signaling regulates essential biological functions and acts in developmental toxicity of some chemicals. The aryl hydrocarbon receptor (AHR) is well-known to mediate developmental toxicity of persistent dioxin-like compounds (DLCs). Recent studies indicate a crosstalk between β-catenin and the AHR in some tissues. However the nature of this crosstalk in embryos is poorly known. We observed that zebrafish embryos exposed to the β-catenin inhibitor XAV939 display effects phenocopying those of the dioxin-like 3,3',4,4',5-pentachlorobiphenyl (PCB126). This led us to investigate the AHR interaction with β-catenin during development and ask whether developmental toxicity of DLCs involves antagonism of β-catenin signaling. We examined phenotypes and transcriptional responses in zebrafish embryos exposed to XAV939 or to a β-catenin activator, 1-azakenpaullone, alone or with AHR agonists, either PCB126 or 6-formylindolo[3,2-b]carbazole (FICZ). Alone 1-azakenpaullone and XAV939 both were embryo-toxic, and we found that in the presence of FICZ, the toxicity of 1-azakenpaullone decreased while the toxicity of XAV939 increased. This rescue of 1-azakenpaullone effects occurred in the time window of Ahr2-mediated toxicity and was reversed by morpholino-oligonucleotide knockdown of Ahr2. Regarding PCB126, addition of either 1-azakenpaullone or XAV939 led to lower mortality than with PCB126 alone but surviving embryos showed severe edemas. 1-Azakenpaullone induced transcription of β-catenin-associated genes, while PCB126 and FICZ blocked this induction. The data indicate a stage-dependent antagonism of β-catenin by Ahr2 in zebrafish embryos. We propose that the AHR has a physiological role in regulating β-catenin during development, and that this is one point of intersection linking toxicological and physiological AHR-governed processes.
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Traenkle B, Emele F, Anton R, Poetz O, Haeussler RS, Maier J, Kaiser PD, Scholz AM, Nueske S, Buchfellner A, Romer T, Rothbauer U. Monitoring interactions and dynamics of endogenous beta-catenin with intracellular nanobodies in living cells. Mol Cell Proteomics 2015; 14:707-23. [PMID: 25595278 DOI: 10.1074/mcp.m114.044016] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
β-catenin is the key component of the canonical Wnt pathway and plays a crucial role in a multitude of developmental and homeostatic processes. The different tasks of β-catenin are orchestrated by its subcellular localization and participation in multiprotein complexes. To gain a better understanding of β-catenin's role in living cells we have generated a new set of single domain antibodies, referred to as nanobodies, derived from heavy chain antibodies of camelids. We selected nanobodies recognizing the N-terminal, core or C-terminal domain of β-catenin and applied these new high-affinity binders as capture molecules in sandwich immunoassays and co-immunoprecipitations of endogenous β-catenin complexes. In addition, we engineered intracellularly functional anti-β-catenin chromobodies by combining the binding moieties of the nanobodies with fluorescent proteins. For the first time, we were able to visualize the subcellular localization and nuclear translocation of endogenous β-catenin in living cells using these chromobodies. Moreover, the chromobody signal allowed us to trace the accumulation of diffusible, hypo-phosphorylated β-catenin in response to compound treatment in real time using High Content Imaging. The anti-β-catenin nanobodies and chromobodies characterized in this study are versatile tools that enable a novel and unique approach to monitor the dynamics of subcellular β-catenin in biochemical and cell biological assays.
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Affiliation(s)
- Bjoern Traenkle
- From the ‡Pharmaceutical Biotechnology, Eberhard-Karls University Tuebingen, Germany
| | - Felix Emele
- From the ‡Pharmaceutical Biotechnology, Eberhard-Karls University Tuebingen, Germany
| | - Roman Anton
- From the ‡Pharmaceutical Biotechnology, Eberhard-Karls University Tuebingen, Germany
| | - Oliver Poetz
- §Natural and Medical Sciences Institute at the University of Tuebingen, Reutlingen, Germany
| | - Ragna S Haeussler
- §Natural and Medical Sciences Institute at the University of Tuebingen, Reutlingen, Germany
| | - Julia Maier
- From the ‡Pharmaceutical Biotechnology, Eberhard-Karls University Tuebingen, Germany
| | - Philipp D Kaiser
- From the ‡Pharmaceutical Biotechnology, Eberhard-Karls University Tuebingen, Germany; §Natural and Medical Sciences Institute at the University of Tuebingen, Reutlingen, Germany
| | - Armin M Scholz
- ¶Livestock Center of the Faculty of Veterinary Medicine, Ludwig Maximilians University Munich, Oberschleissheim, Germany
| | - Stefan Nueske
- ¶Livestock Center of the Faculty of Veterinary Medicine, Ludwig Maximilians University Munich, Oberschleissheim, Germany
| | | | - Tina Romer
- ‖ChromoTek GmbH, Planegg-Martinsried, Germany
| | - Ulrich Rothbauer
- From the ‡Pharmaceutical Biotechnology, Eberhard-Karls University Tuebingen, Germany; §Natural and Medical Sciences Institute at the University of Tuebingen, Reutlingen, Germany;
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Valetti S, Maione F, Mura S, Stella B, Desmaële D, Noiray M, Vergnaud J, Vauthier C, Cattel L, Giraudo E, Couvreur P. Peptide-functionalized nanoparticles for selective targeting of pancreatic tumor. J Control Release 2014; 192:29-39. [PMID: 24984010 DOI: 10.1016/j.jconrel.2014.06.039] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 06/20/2014] [Accepted: 06/21/2014] [Indexed: 12/22/2022]
Abstract
Chemotherapy for pancreatic cancer is hampered by the tumor's physio-pathological complexity. Here we show a targeted nanomedicine using a new ligand, the CKAAKN peptide, which had been identified by phage display, as an efficient homing device within the pancreatic pathological microenvironment. Taking advantage of the squalenoylation platform, the CKAAKN peptide was conjugated to squalene (SQCKAAKN) and then co-nanoprecipitated with the squalenoyl prodrug of gemcitabine (SQdFdC) giving near monodisperse nanoparticles (NPs) for safe intravenous injection. By interacting with a novel target pathway, the Wnt-2, the CKAAKN functionalization enabled nanoparticles: (i) to specifically interact with both tumor cells and angiogenic vessels and (ii) to simultaneously promote pericyte coverage, thus leading to the normalization of the vasculature likely improving the tumor accessibility for therapy. All together, this approach represents a unique targeted nanoparticle design with remarkable selectivity towards pancreatic cancer and multiple mechanisms of action.
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Affiliation(s)
- Sabrina Valetti
- Université Paris-Sud, Faculté de Pharmacie, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France; CNRS UMR 8612, Institut Galien Paris-Sud, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France; Department of Drug Science and Technology, University of Torino, 9 Via Pietro Giuria, 10125 Torino, Italy
| | - Federica Maione
- Laboratory of Transgenic Mouse Models, Candiolo Cancer Institute - FPO, IRCCS, Strada Provinciale 142, Km. 3.95, 10060 Candiolo (Torino), Italy
| | - Simona Mura
- Université Paris-Sud, Faculté de Pharmacie, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France; CNRS UMR 8612, Institut Galien Paris-Sud, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France
| | - Barbara Stella
- Department of Drug Science and Technology, University of Torino, 9 Via Pietro Giuria, 10125 Torino, Italy
| | - Didier Desmaële
- Université Paris-Sud, Faculté de Pharmacie, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France; CNRS UMR 8612, Institut Galien Paris-Sud, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France
| | - Magali Noiray
- Université Paris-Sud, Faculté de Pharmacie, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France; CNRS UMR 8612, Institut Galien Paris-Sud, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France
| | - Juliette Vergnaud
- Université Paris-Sud, Faculté de Pharmacie, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France; CNRS UMR 8612, Institut Galien Paris-Sud, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France
| | - Christine Vauthier
- Université Paris-Sud, Faculté de Pharmacie, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France; CNRS UMR 8612, Institut Galien Paris-Sud, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France
| | - Luigi Cattel
- Department of Drug Science and Technology, University of Torino, 9 Via Pietro Giuria, 10125 Torino, Italy
| | - Enrico Giraudo
- Department of Drug Science and Technology, University of Torino, 9 Via Pietro Giuria, 10125 Torino, Italy; Laboratory of Transgenic Mouse Models, Candiolo Cancer Institute - FPO, IRCCS, Strada Provinciale 142, Km. 3.95, 10060 Candiolo (Torino), Italy
| | - Patrick Couvreur
- Université Paris-Sud, Faculté de Pharmacie, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France; CNRS UMR 8612, Institut Galien Paris-Sud, 5 Rue Jean-Baptiste Clément, 92296 Châtenay-Malabry Cedex, France.
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Werminghaus P, Haase M, Hornsby PJ, Schinner S, Schott M, Malendowicz LK, Lammers BJ, Goretzki PE, Müller-Mattheis V, Willenberg HS. Hedgehog-signaling is upregulated in non-producing human adrenal adenomas and antagonism of hedgehog-signaling inhibits proliferation of NCI-H295R cells and an immortalized primary human adrenal cell line. J Steroid Biochem Mol Biol 2014; 139:7-15. [PMID: 24063979 DOI: 10.1016/j.jsbmb.2013.09.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 07/12/2013] [Accepted: 09/12/2013] [Indexed: 01/10/2023]
Abstract
Hedgehog (Hh)-signaling pathway is important in embryonic development. Activation of Hh-signaling is associated with tumorigenesis. Recent studies demonstrate that Hh-signaling is involved in the development of the adrenal gland in mice and is important in regulating adrenal proliferation. We studied the expression of Sonic hedgehog (SHH), Smoothened (SMO), Patched1 (PTCH1) and GLI family zinc finger 1 (GLI1) in human adrenal and in adrenocortical tumors using immunohistochemistry and semi-quantitative reverse transcriptase-polymerase chain reaction. Modulation of GLI1 and SMO messenger ribonucleic acid (mRNA) expression was investigated with forskolin. The role of Hh-signaling was studied in NCI-H295R cells and in an immortalized primary cell line using the Hh-agonist smoothened agonist (SAG) and the Hh-antagonist cyclopamine. The Hh-pathway components SHH, GLI1, PTCH1 and SMO were detectable in all adrenal glands. While in cortisol-producing adenomas (CPA), Hh-signaling expression levels were comparable to that in normal adrenal cortex, a much higher mRNA expression of GLI1, SMO and SHH was observed in non-producing adenomas (NPA). Interestingly, stimulation of cultured adrenal cells with forskolin led to a decrease in expression of GLI1 and SMO mRNAs. Antagonism of Hh-signaling resulted in a lower proliferation rate of adrenocortical cells, while Hh-agonism had no significant effect on adrenal cell proliferation. Our data show Hh-signaling activity in adult adrenal glands. Activation of the PKA pathway results in lower expression of Hh-signaling proteins. This might explain the lower expression of the Hh components GLI1 and SMO in CPA in comparison to the higher expression in NPA. Hh-signaling might be involved in the tumorigenesis of NPA.
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Affiliation(s)
- Pascal Werminghaus
- Department of Endocrinology and Diabetology, Medical Faculty, University of Dusseldorf, D-40225 Duesseldorf, Germany; Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Medical Faculty, University of Dusseldorf, D-40225 Duesseldorf, Germany
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A glimpse of the pathogenetic mechanisms of Wnt/β-catenin signaling in diabetic nephropathy. BIOMED RESEARCH INTERNATIONAL 2013; 2013:987064. [PMID: 24455745 PMCID: PMC3886614 DOI: 10.1155/2013/987064] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 11/22/2013] [Indexed: 01/22/2023]
Abstract
The Wnt family of proteins belongs to a group of secreted lipid-modified glycoproteins with highly conserved cysteine residues. Prior results indicate that Wnt/β-catenin signaling plays a prominent role in cell differentiation, adhesion, survival, and apoptosis and is involved in organ development, tumorigenesis, and tissue fibrosis, among other functions. Accumulating evidence has suggested that Wnt/β-catenin exhibits a pivotal function in the progression of diabetic nephropathy (DN). In this review, we focused on discussing the dual role of Wnt/β-catenin in apoptosis and epithelial mesenchymal transition (EMT) formation of mesangial cells. Moreover, we also elucidated the effect of Wnt/β-catenin in podocyte dysfunction, tubular EMT formation, and renal fibrosis under DN conditions. In addition, the molecular mechanisms involved in this process are introduced. This information provides a novel molecular target of Wnt/β-catenin for the protection of kidney damage and in delay of the progression of DN.
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Shojima N, Hara K, Fujita H, Horikoshi M, Takahashi N, Takamoto I, Ohsugi M, Aburatani H, Noda M, Kubota N, Yamauchi T, Ueki K, Kadowaki T. Depletion of homeodomain-interacting protein kinase 3 impairs insulin secretion and glucose tolerance in mice. Diabetologia 2012; 55:3318-30. [PMID: 22983607 DOI: 10.1007/s00125-012-2711-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 08/07/2012] [Indexed: 01/13/2023]
Abstract
AIMS/HYPOTHESIS Insufficient insulin secretion and reduced pancreatic beta cell mass are hallmarks of type 2 diabetes. Here, we focused on a family of serine-threonine kinases known as homeodomain-interacting protein kinases (HIPKs). HIPKs are implicated in the modulation of Wnt signalling, which plays a crucial role in transcriptional activity, and in pancreas development and maintenance. The aim of the present study was to characterise the role of HIPKs in glucose metabolism. METHODS We used RNA interference to characterise the role of HIPKs in regulating insulin secretion and transcription activity. We conducted RT-PCR and western blot analyses to analyse the expression and abundance of HIPK genes and proteins in the islets of high-fat diet-fed mice. Glucose-induced insulin secretion and beta cell proliferation were measured in islets from Hipk3 ( -/- ) mice, which have impaired glucose tolerance owing to an insulin secretion deficiency. The abundance of pancreatic duodenal homeobox (PDX)-1 and glycogen synthase kinase (GSK)-3β phosphorylation in Hipk3 ( -/- ) islets was determined by immunohistology and western blot analyses. RESULTS We found that HIPKs regulate insulin secretion and transcription activity. Hipk3 expression was most significantly increased in the islets of high-fat diet-fed mice. Furthermore, glucose-induced insulin secretion and beta cell proliferation were decreased in the islets of Hipk3 ( -/- ) mice. Levels of PDX1 and GSK-3β phosphorylation were significantly decreased in Hipk3 ( -/- ) islets. CONCLUSIONS/INTERPRETATION Depletion of HIPK3 impairs insulin secretion and glucose tolerance. Decreased levels of HIPK3 may play a substantial role in the pathogenesis of type 2 diabetes.
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Affiliation(s)
- N Shojima
- Department of Diabetes and Metabolic Disease, Graduate School of Medicine, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, Japan
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Yang KF, Shen XH, Cai W. Prenatal and early postnatal exposure to high-saturated-fat diet represses Wnt signaling and myogenic genes in offspring rats. Exp Biol Med (Maywood) 2012; 237:912-8. [PMID: 22875341 DOI: 10.1258/ebm.2012.011395] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The prenatal and early postnatal period is a key developmental window for nutrition status, and high-fat exposure in this period has been shown to be associated with type 2 diabetes, obesity and other features of metabolic disorders later in life. The present study was designed to investigate the underlying molecular mechanisms and role of relative genes involved in this process. We investigated the impact of prenatal and early postnatal exposure to a high-saturated-fat diet on the regulation of the Wnt signaling pathway and myogenic genes in skeletal muscle of rat offspring as well as the serum and muscle physiological outcomes. Timed-pregnant Sprague-Dawley rats were fed either a control (C, 16% kcal fat) or high-saturated-fat diet (HF, 45% kcal fat) throughout gestation and lactation. After weaning, female offspring were fed a control diet to generate two offspring groups: control diet-fed offspring of control diet-fed dams (C/C) and control diet-fed offspring of HF diet-fed dams (HF/C). The serum glucose of the HF/C offspring (5.58 ± 0.26 mmol/L) was significantly higher than that of C/C offspring (4.97 ± 0.28 mmol/L), and the Homeostasis Model Assessment-Insulin Resistance of HF/C offspring (2.00 ± 0.11) was also significantly higher when compared with C/C (1.84 ± 0.09). Furthermore, HF/C offspring presented excessive intramuscular fat accumulation (1.8-fold, P < 0.05) and decreased muscle glycogen (1.3-fold, P < 0.05), as well as impairment of muscle development at the age of 12 weeks. Meanwhile, we observed the repression of Wnt/β-catenin signaling and myogenic genes in HF/C offspring. The present study indicates that prenatal and early postnatal exposure to a high-saturated-fat diet suppresses the development of skeletal muscle and myogenic genes via Wnt/β-catenin signaling, and the inappropriate muscle development could potentially contribute to the predisposition of offspring to develop metabolic-syndrome-like phenotype in adulthood.
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Affiliation(s)
- Ke-Feng Yang
- Clinical Nutrition Center, Xin Hua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai
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29
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Sfrp5 expression and secretion in adipocytes are up-regulated during differentiation and are negatively correlated with insulin resistance. Cell Biol Int 2012; 36:851-5. [DOI: 10.1042/cbi20120054] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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30
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Archbold HC, Yang YX, Chen L, Cadigan KM. How do they do Wnt they do?: regulation of transcription by the Wnt/β-catenin pathway. Acta Physiol (Oxf) 2012; 204:74-109. [PMID: 21624092 DOI: 10.1111/j.1748-1716.2011.02293.x] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Wnt/β-catenin signalling is known to play many roles in metazoan development and tissue homeostasis. Misregulation of the pathway has also been linked to many human diseases. In this review, specific aspects of the pathway's involvement in these processes are discussed, with an emphasis on how Wnt/β-catenin signalling regulates gene expression in a cell and temporally specific manner. The T-cell factor (TCF) family of transcription factors, which mediate a large portion of Wnt/β-catenin signalling, will be discussed in detail. Invertebrates contain a single TCF gene that contains two DNA-binding domains, the high mobility group (HMG) domain and the C-clamp, which increases the specificity of DNA binding. In vertebrates, the situation is more complex, with four TCF genes producing many isoforms that contain the HMG domain, but only some of which possess a C-clamp. Vertebrate TCFs have been reported to act in concert with many other transcription factors, which may explain how they obtain sufficient specificity for specific DNA sequences, as well as how they achieve a wide diversity of transcriptional outputs in different cells.
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Affiliation(s)
- H C Archbold
- Program in Cell and Molecular Biology, University of Michigan, Ann Arbor, 48109-1048, USA
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Silbernagel G, Renner W, Grammer TB, Hügl SR, Bertram J, Kleber ME, Hoffmann MM, Winkelmann BR, März W, Boehm BO. Association of TCF7L2 SNPs with age at onset of type 2 diabetes and proinsulin/insulin ratio but not with glucagon-like peptide 1. Diabetes Metab Res Rev 2011; 27:499-505. [PMID: 21384500 DOI: 10.1002/dmrr.1194] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Variants in TCF7L2 have been associated with the age at onset of type 2 diabetes in Mexican Americans. However, there is a lack of data on this relationship in Caucasians. Furthermore, risk alleles in TCF7L2 have been suggested to account for decreased conversion of proinsulin to insulin and decreased expression of GLP-1. We investigated the effect of the allelic variants rs1225537 and rs7903146 in TCF7L2 on the age at onset of type 2 diabetes, the plasma concentrations of proinsulin and GLP-1, and the ratio of proinsulin to insulin in a German cohort. METHODS We studied 3185 participants of the LUdwigshafen RIsk and Cardiovascular health (LURIC) study. Among these, 1021 subjects had type 2 diabetes. Data on age at onset of diabetes were available in 925 subjects. OGTTs were performed in a subgroup not previously known to have diabetes. RESULTS Carriers of the risk alleles in rs1225537 and rs7901346 had increased risk of type 2 diabetes and elevated HbA(1c) (all p < 0.001). The risk alleles were also associated with early onset of type 2 diabetes, decreased insulin secretion and markedly increased proinsulin and proinsulin to insulin ratio (all p < 0.03). GLP-1 was not significantly related to the TCF7L2 genotype. CONCLUSIONS Our data demonstrate that TCF7L2 variants are associated with an early age of onset of type 2 diabetes in Caucasians and affects the conversion of proinsulin to insulin. However, TCF7L2 is not consistently associated with fasting GLP-1.
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Affiliation(s)
- Guenther Silbernagel
- Department of Internal Medicine, Division of Endocrinology, Diabetology, Nephrology, Vascular Disease, and Clinical Chemistry, Eberhard-Karls-University Tübingen, Tübingen, Germany
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Haase M, Anlauf M, Schott M, Schinner S, Kaminsky E, Scherbaum WA, Willenberg HS. A new mutation in the menin gene causes the multiple endocrine neoplasia type 1 syndrome with adrenocortical carcinoma. Endocrine 2011; 39:153-9. [PMID: 21069576 DOI: 10.1007/s12020-010-9424-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2010] [Accepted: 10/25/2010] [Indexed: 01/23/2023]
Abstract
Multiple endocrine neoplasia type 1 (MEN1) is an autosomal dominant tumor syndrome that may be caused by mutations in the MEN1 gene on 11q13. Loss of function of the tumor suppressor gene MEN1 leads to synchronous or metachronous appearance of neuroendocrine tumors arising from neuroendocrine cells of the parathyroid and pituitary glands, the duodenum and pancreatic islets, and other endocrine organs such as the adrenal cortex. We here present a patient with MEN1 who developed hyperparathyroidism, multiple well differentiated functionally inactive neuroendocrine tumors of the pancreas and an adrenal carcinoma. We describe a new mutation at codon 443 in the coding region of exon 9 in the MEN1 gene, where a cytosine residue was exchanged for adenosine (TCC > TAC) and, consequently, serine for tyrosine (p.Ser443Tyr; c.1328C > A). [corrected] Also, we provide clinical data that may add to the genotype-phenotype discussion. We conclude that the novel mutation in the MEN1 gene described herein was clinically relevant.
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Affiliation(s)
- M Haase
- Department of Endocrinology, Diabetes and Rheumatology, University Hospital Duesseldorf, Duesseldorf, Moorenstrasse 5, Germany
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Schulte G. International Union of Basic and Clinical Pharmacology. LXXX. The class Frizzled receptors. Pharmacol Rev 2011; 62:632-67. [PMID: 21079039 DOI: 10.1124/pr.110.002931] [Citation(s) in RCA: 160] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The receptor class Frizzled, which has recently been categorized as a separate group of G protein-coupled receptors by the International Union of Basic and Clinical Pharmacology, consists of 10 Frizzleds (FZD(1-10)) and Smoothened (SMO). The FZDs are activated by secreted lipoglycoproteins of the Wingless/Int-1 (WNT) family, whereas SMO is indirectly activated by the Hedgehog (HH) family of proteins acting on the transmembrane protein Patched (PTCH). Recent years have seen major advances in our knowledge about these seven-transmembrane-spanning proteins, including: receptor function, molecular mechanisms of signal transduction, and the receptor's role in embryonic patterning, physiology, cancer, and other diseases. Despite intense efforts, many question marks and challenges remain in mapping receptor-ligand interaction, signaling routes, mechanisms of specificity and how these molecular details underlie disease and also the receptor's important role in physiology. This review therefore focuses on the molecular aspects of WNT/FZD and HH/SMO signaling discussing receptor structure, mechanisms of signal transduction, accessory proteins, receptor dynamics, and the possibility of targeting these signaling pathways pharmacologically.
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Affiliation(s)
- Gunnar Schulte
- Section of Receptor Biology & Signaling, Dept. of Physiology & Pharmacology, Karolinska Institutet, Stockholm, Sweden.
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El Wakil A, Lalli E. The Wnt/beta-catenin pathway in adrenocortical development and cancer. Mol Cell Endocrinol 2011; 332:32-7. [PMID: 21094679 DOI: 10.1016/j.mce.2010.11.014] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Revised: 10/22/2010] [Accepted: 11/12/2010] [Indexed: 01/07/2023]
Abstract
Signaling by the Wnt family of secreted glycolipoproteins plays key roles in embryonic development of organisms ranging from nematodes to mammals and is also implicated in several types of human cancers. Canonical Wnt signaling functions by regulating the translocation of β-catenin to the nucleus, where it controls key gene expression programs through interaction with Tcf/Lef and other families of transcription factors. Wnts can also act through non-canonical pathways that do not involve β-catenin activation, but implicate small GTPases/JNK kinase and intracellular calcium. Here we review recent studies that have revealed the expression of several components of Wnt/β-catenin signaling in the adrenal cortex and discovered a key role for this pathway in the regulation of proliferation/differentiation of progenitor cells and in tumorigenesis of that endocrine organ.
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Affiliation(s)
- Abeer El Wakil
- Institut de Pharmacologie Moléculaire et Cellulaire, CNRS UMR 6097, Valbonne, France
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Schinner S. Wingless-type MMTV integration site family (WNT) signalling in pancreatic beta cells-more complex than expected. Diabetologia 2010; 53:2073-5. [PMID: 20526758 DOI: 10.1007/s00125-010-1814-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2010] [Accepted: 04/23/2010] [Indexed: 10/19/2022]
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Vacante M, Malaguarnera M, Motta M. Revision of the ADA-classification of diabetes mellitus type 2 (DMT2): the importance of maturity onset diabetes (MOD), and senile diabetes (DS). Arch Gerontol Geriatr 2010; 53:113-9. [PMID: 20800300 DOI: 10.1016/j.archger.2010.06.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2010] [Revised: 06/22/2010] [Accepted: 06/26/2010] [Indexed: 02/06/2023]
Abstract
The changing social and economic conditions and the increase of the life span induced a progressive increase of the general prevalence of DMT2, particularly in the elderly population of the highly evoluted countries. Up to now 18 genetic loci have been identified, each of them consisting of several single nucleotide polymorphisms (SNPs). The evidence that the DMT2 is regulated by a high number of genes, demonstrate the pathogenetic complexity of this disease. The onset of diabetes mellitus (DM) in medium age is a consequence of the breakdown of the glycemic homeostasis in correlation with the genetic factors, such as the variants of the TCF7L2, obesity, etc., and the environmental factors, such as the life-style, the evolution of chronic-degenerative diseases, etc. In case of DM that onsets in old age we have to add the deterioration of the anti-aging defense mechanisms, characterized by the antagonistic action of the genes of longevity and aging. One can observe several clinical and therapeutic differences; therefore, the authors of this review propose the reinsertion of three forms into the DMT2 correlated with the age of onset and with the actual age of the subjects: the maturity onset diabetes (MOD), the maturity onset diabetes in elderly (MODE), and the senile diabetes (DS).
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Affiliation(s)
- Marco Vacante
- Department of Senescence, Urological and Neurological Sciences, University of Catania, Ospedale Cannizzaro, Viale Messina, 829, I-95125 Catania, Italy
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