1
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Luo X, Luan C, Zhou J, Ye Y, Zhang W, Jain R, Zhang E, Chen N. Glycolytic enzyme Enolase-1 regulates insulin gene expression in pancreatic β-cell. Biochem Biophys Res Commun 2024; 706:149735. [PMID: 38461647 DOI: 10.1016/j.bbrc.2024.149735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/21/2024] [Accepted: 02/26/2024] [Indexed: 03/12/2024]
Abstract
Enolase-1 (Eno1) plays a critical role in regulating glucose metabolism; however, its specific impact on pancreatic islet β-cells remains elusive. This study aimed to provide a preliminary exploration of Eno1 function in pancreatic islet β-cells. The findings revealed that the expression of ENO1 mRNA in type 2 diabetes donors was significantly increased and positively correlated with HbA1C and negatively correlated with insulin gene expression. A high level of Eno1 in human insulin-secreting rat INS-1832/13 cells with co-localization with intracellular insulin proteins was accordingly observed. Silencing of Eno1 using siRNA or inhibiting Eno1 protein activity with an Eno1 antagonist significantly reduced insulin secretion and insulin content in β-cells, while the proinsulin/insulin content ratio remained unchanged. This reduction in β-cells function was accompanied by a notable decrease in intracellular ATP and mitochondrial cytochrome C levels. Overall, our findings confirm that Eno1 regulates the insulin secretion process, particularly glucose metabolism and ATP production in the β-cells. The mechanism primarily involves its influence on insulin production, suggesting that Eno1 represents a potential target for β-cell protection and diabetes treatment.
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Affiliation(s)
- Xiumei Luo
- , Department of Endocrinology, Fudan University Zhongshan Hospital Xiamen Branch, No668. Jinhu Road, Xiamen, 361000, China
| | - Cheng Luan
- , Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Jan Waldenströms Gata 35, 20502, Malmö, Sweden
| | - Jingqi Zhou
- , Department of Endocrinology, Fudan University Zhongshan Hospital Xiamen Branch, No668. Jinhu Road, Xiamen, 361000, China
| | - Yingying Ye
- , Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Jan Waldenströms Gata 35, 20502, Malmö, Sweden
| | - Wei Zhang
- , Xiamen Key Laboratory of Cardiac Electrophysiology, Xiamen Institute of Cardiovascular Diseases, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, China
| | - Ruchi Jain
- , Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Jan Waldenströms Gata 35, 20502, Malmö, Sweden
| | - Enming Zhang
- , Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Jan Waldenströms Gata 35, 20502, Malmö, Sweden.
| | - Ning Chen
- , Department of Endocrinology, Fudan University Zhongshan Hospital Xiamen Branch, No668. Jinhu Road, Xiamen, 361000, China.
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2
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Zhang W, Tian Y, Liu XD, Luan C, Liu JR, Gu QS, Li ZL, Liu XY. Copper-Catalyzed Enantioselective C(sp 3 )-SCF 3 Coupling of Carbon-Centered Benzyl Radicals with (Me 4 N)SCF 3. Angew Chem Int Ed Engl 2024; 63:e202319850. [PMID: 38273811 DOI: 10.1002/anie.202319850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 01/27/2024]
Abstract
In contrast with the well-established C(sp2 )-SCF3 cross-coupling to forge the Ar-SCF3 bond, the corresponding enantioselective coupling of readily available alkyl electrophiles to forge chiral C(sp3 )-SCF3 bond has remained largely unexplored. We herein disclose a copper-catalyzed enantioselective radical C(sp3 )-SCF3 coupling of a range of secondary/tertiary benzyl radicals with the easily available (Me4 N)SCF3 reagent. The key to the success lies in the utilization of chiral phosphino-oxazoline-derived anionic N,N,P-ligands through tuning electronic and steric effects for the simultaneous control of the reaction initiation and enantioselectivity. This strategy can successfully realize two types of asymmetric radical reactions, including enantioconvergent C(sp3 )-SCF3 cross-coupling of racemic benzyl halides and three-component 1,2-carbotrifluoromethylthiolation of arylated alkenes under mild reaction conditions. It therefore provides a highly flexible platform for the rapid assembly of an array of enantioenriched SCF3 -containing molecules of interest in organic synthesis and medicinal chemistry.
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Affiliation(s)
- Wei Zhang
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen, 518055, China
- Shenzhen Grubbs Institute, Department of Chemistry, Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yu Tian
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen, 518055, China
- Shenzhen Grubbs Institute, Department of Chemistry, Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xiao-Dong Liu
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen, 518055, China
- Shenzhen Grubbs Institute, Department of Chemistry, Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Cheng Luan
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen, 518055, China
- Shenzhen Grubbs Institute, Department of Chemistry, Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Ji-Ren Liu
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen, 518055, China
- Shenzhen Grubbs Institute, Department of Chemistry, Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Zhong-Liang Li
- School of Physical Sciences, Great Bay University, Dongguan, 523000, China
| | - Xin-Yuan Liu
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen, 518055, China
- Shenzhen Grubbs Institute, Department of Chemistry, Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen, 518055, China
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3
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Yu ZL, Cheng YF, Liu JR, Yang W, Xu DT, Tian Y, Bian JQ, Li ZL, Fan LW, Luan C, Gao A, Gu QS, Liu XY. Cu(I)-Catalyzed Chemo- and Enantioselective Desymmetrizing C-O Bond Coupling of Acyl Radicals. J Am Chem Soc 2023; 145:6535-6545. [PMID: 36912664 DOI: 10.1021/jacs.3c00671] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
Transition-metal-catalyzed enantioselective functionalization of acyl radicals has so far not been realized, probably due to their relatively high reactivity, which renders the chemo- and stereocontrol challenging. Herein, we describe Cu(I)-catalyzed enantioselective desymmetrizing C-O bond coupling of acyl radicals. This reaction is compatible with (hetero)aryl and alkyl aldehydes and, more importantly, displays a very broad scope of challenging alcohol substrates, such as 2,2-disubstituted 1,3-diols, 2-substituted-2-chloro-1,3-diols, 2-substituted 1,2,3-triols, 2-substituted serinols, and meso primary 1,4-diols, providing enantioenriched esters characterized by challenging acyclic tetrasubstituted carbon stereocenters. Partnered by one- or two-step follow-up transformations, this reaction provides a convenient and practical strategy for the rapid preparation of chiral C3 building blocks from readily available alcohols, particularly the industrially relevant glycerol. Mechanistic studies supported the proposed C-O bond coupling of acyl radicals.
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Affiliation(s)
- Zhang-Long Yu
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yong-Feng Cheng
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ji-Ren Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wu Yang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Dan-Tong Xu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yu Tian
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jun-Qian Bian
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Li-Wen Fan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Cheng Luan
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ang Gao
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xin-Yuan Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
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4
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Chen JJ, Fang JH, Du XY, Zhang JY, Bian JQ, Wang FL, Luan C, Liu WL, Liu JR, Dong XY, Li ZL, Gu QS, Dong Z, Liu XY. Enantioconvergent Cu-catalyzed N-alkylation of aliphatic amines. Nature 2023:10.1038/s41586-023-05950-8. [PMID: 36940729 DOI: 10.1038/s41586-023-05950-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 03/13/2023] [Indexed: 03/23/2023]
Abstract
Chiral amines are commonly found in the pharmaceutical and agrochemical industries1. The strong demand for unnatural chiral amines has driven the development of catalytic asymmetric methods1,2. Although the N-alkylation of aliphatic amines with alkyl halides has been widely adopted for over 100 years, catalyst poisoning and unfettered reactivity have been preventing the development of a catalyst-controlled enantioselective version3-5. Herein we report the use of chiral tridentate anionic ligands to enable the copper-catalyzed chemoselective and enantioconvergent N-alkylation of aliphatic amines with α-carbonyl alkyl chlorides. This method can directly convert feedstock chemicals including ammonia and pharmaceutically-relevant amines into unnatural chiral α-amino amides under mild and robust conditions. Excellent enantioselectivity and functional group tolerance were observed. The power of the method is demonstrated in a number of complex settings, including late-stage functionalization and in the expedited synthesis of diverse amine drug molecules. The current method suggests that multidentate anionic ligands are a general solution for overcoming transition metal catalyst poisoning.
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Affiliation(s)
- Ji-Jun Chen
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China
| | - Jia-Heng Fang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China
| | - Xuan-Yi Du
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China
| | - Jia-Yong Zhang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China
| | - Jun-Qian Bian
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China
| | - Fu-Li Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China
| | - Cheng Luan
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen, China
| | - Wei-Long Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China
| | - Ji-Ren Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China
| | - Xiao-Yang Dong
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen, China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen, China
| | - Zhe Dong
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China
| | - Xin-Yuan Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China.
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5
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Bacos K, Perfilyev A, Karagiannopoulos A, Cowan E, Ofori JK, Bertonnier-Brouty L, Rönn T, Lindqvist A, Luan C, Ruhrmann S, Ngara M, Nilsson Å, Gheibi S, Lyons CL, Lagerstedt JO, Barghouth M, Esguerra JL, Volkov P, Fex M, Mulder H, Wierup N, Krus U, Artner I, Eliasson L, Prasad RB, Cataldo LR, Ling C. Type 2 diabetes candidate genes, including PAX5, cause impaired insulin secretion in human pancreatic islets. J Clin Invest 2023; 133:163612. [PMID: 36656641 PMCID: PMC9927941 DOI: 10.1172/jci163612] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 01/05/2023] [Indexed: 01/20/2023] Open
Abstract
Type 2 diabetes (T2D) is caused by insufficient insulin secretion from pancreatic β cells. To identify candidate genes contributing to T2D pathophysiology, we studied human pancreatic islets from approximately 300 individuals. We found 395 differentially expressed genes (DEGs) in islets from individuals with T2D, including, to our knowledge, novel (OPRD1, PAX5, TET1) and previously identified (CHL1, GLRA1, IAPP) candidates. A third of the identified expression changes in islets may predispose to diabetes, as expression of these genes associated with HbA1c in individuals not previously diagnosed with T2D. Most DEGs were expressed in human β cells, based on single-cell RNA-Seq data. Additionally, DEGs displayed alterations in open chromatin and associated with T2D SNPs. Mouse KO strains demonstrated that the identified T2D-associated candidate genes regulate glucose homeostasis and body composition in vivo. Functional validation showed that mimicking T2D-associated changes for OPRD1, PAX5, and SLC2A2 impaired insulin secretion. Impairments in Pax5-overexpressing β cells were due to severe mitochondrial dysfunction. Finally, we discovered PAX5 as a potential transcriptional regulator of many T2D-associated DEGs in human islets. Overall, we have identified molecular alterations in human pancreatic islets that contribute to β cell dysfunction in T2D pathophysiology.
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Affiliation(s)
- Karl Bacos
- Epigenetics and Diabetes Unit, Department of Clinical Sciences and
| | | | - Alexandros Karagiannopoulos
- Unit of Islet Cell Exocytosis, Department of Clinical Sciences, Lund University Diabetes Centre, Scania University Hospital, Malmö, Scania, Sweden
| | - Elaine Cowan
- Unit of Islet Cell Exocytosis, Department of Clinical Sciences, Lund University Diabetes Centre, Scania University Hospital, Malmö, Scania, Sweden
| | - Jones K. Ofori
- Epigenetics and Diabetes Unit, Department of Clinical Sciences and
| | - Ludivine Bertonnier-Brouty
- Endocrine Cell Differentiation, Department of Laboratory Medicine, Lund Stem Cell Center, Malmö, Scania, Sweden
| | - Tina Rönn
- Epigenetics and Diabetes Unit, Department of Clinical Sciences and
| | - Andreas Lindqvist
- Neuroendocrine Cell Biology, Department of Experimental Medical Science
| | - Cheng Luan
- Unit of Islet Pathophysiology, Department of Clinical Sciences
| | - Sabrina Ruhrmann
- Epigenetics and Diabetes Unit, Department of Clinical Sciences and
| | - Mtakai Ngara
- Neuroendocrine Cell Biology, Department of Experimental Medical Science
| | - Åsa Nilsson
- Human Tissue Lab, Department of Clinical Sciences
| | - Sevda Gheibi
- Molecular Metabolism Unit, Department of Clinical Sciences, and
| | - Claire L. Lyons
- Molecular Metabolism Unit, Department of Clinical Sciences, and
| | - Jens O. Lagerstedt
- Unit of Islet Cell Exocytosis, Department of Clinical Sciences, Lund University Diabetes Centre, Scania University Hospital, Malmö, Scania, Sweden
| | | | - Jonathan L.S. Esguerra
- Unit of Islet Cell Exocytosis, Department of Clinical Sciences, Lund University Diabetes Centre, Scania University Hospital, Malmö, Scania, Sweden
| | - Petr Volkov
- Epigenetics and Diabetes Unit, Department of Clinical Sciences and
| | - Malin Fex
- Molecular Metabolism Unit, Department of Clinical Sciences, and
| | - Hindrik Mulder
- Molecular Metabolism Unit, Department of Clinical Sciences, and
| | - Nils Wierup
- Neuroendocrine Cell Biology, Department of Experimental Medical Science
| | - Ulrika Krus
- Human Tissue Lab, Department of Clinical Sciences
| | - Isabella Artner
- Endocrine Cell Differentiation, Department of Laboratory Medicine, Lund Stem Cell Center, Malmö, Scania, Sweden
| | - Lena Eliasson
- Unit of Islet Cell Exocytosis, Department of Clinical Sciences, Lund University Diabetes Centre, Scania University Hospital, Malmö, Scania, Sweden
| | - Rashmi B. Prasad
- Genomics, Diabetes and Endocrinology, Department of Clinical Sciences, Lund University Diabetes Centre, Scania University Hospital, Malmö, Scania, Sweden.,Institute of Molecular Medicine (FIMM), Helsinki University, Helsinki, Finland
| | - Luis Rodrigo Cataldo
- Molecular Metabolism Unit, Department of Clinical Sciences, and,The Novo Nordisk Foundation Centre for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Charlotte Ling
- Epigenetics and Diabetes Unit, Department of Clinical Sciences and
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6
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Wang FL, Liu L, Yang CJ, Luan C, Yang J, Chen JJ, Gu QS, Li ZL, Liu XY. Synthesis of α-Quaternary β-Lactams via Copper-Catalyzed Enantioconvergent Radical C(sp 3 )-C(sp 2 ) Cross-Coupling with Organoboronate Esters. Angew Chem Int Ed Engl 2023; 62:e202214709. [PMID: 36357331 DOI: 10.1002/anie.202214709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Indexed: 11/12/2022]
Abstract
The copper-catalyzed enantioconvergent radical C(sp3 )-C(sp2 ) cross-coupling of tertiary α-bromo-β-lactams with organoboronate esters could provide the synthetically valuable α-quaternary β-lactams. The challenge arises mainly from the construction of sterically congested quaternary stereocenters between the tertiary alkyl radicals and chiral copper(II) species. Herein, we describe our success in achieving such transformations through the utilization of a copper/hemilabile N,N,N-ligand catalyst to forge the sterically congested chiral C(sp3 )-C(sp2 ) bond via a single-electron reduction/transmetalation/bond formation catalytic cycle. The synthetic potential of this approach is shown in the straightforward conversion of the corresponding products into many valuable building blocks. We hope that the developed catalytic cycle would open up new vistas for more enantioconvergent cross-coupling reactions.
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Affiliation(s)
- Fu-Li Wang
- School of Science and Institute of Scientific Research, Great Bay University, Dongguan, 523000, China.,Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Lin Liu
- School of Science and Institute of Scientific Research, Great Bay University, Dongguan, 523000, China.,Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chang-Jiang Yang
- School of Science and Institute of Scientific Research, Great Bay University, Dongguan, 523000, China.,Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Cheng Luan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China.,Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jing Yang
- College of Health Science and Environmental Engineering, Shenzhen Technology University, Shenzhen, 518118, China
| | - Ji-Jun Chen
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xin-Yuan Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
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7
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Barghouth M, Ye Y, Karagiannopoulos A, Ma Y, Cowan E, Wu R, Eliasson L, Renström E, Luan C, Zhang E. The T-type calcium channel Ca V3.2 regulates insulin secretion in the pancreatic β-cell. Cell Calcium 2022; 108:102669. [PMID: 36347081 DOI: 10.1016/j.ceca.2022.102669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 10/26/2022] [Accepted: 10/28/2022] [Indexed: 11/08/2022]
Abstract
Voltage-gated Ca2+ (CaV) channel dysfunction leads to impaired glucose-stimulated insulin secretion in pancreatic β-cells and contributes to the development of type-2 diabetes (T2D). The role of the low-voltage gated T-type CaV channels in β-cells remains obscure. Here we have measured the global expression of T-type CaV3.2 channels in human islets and found that gene expression of CACNA1H, encoding CaV3.2, is negatively correlated with HbA1c in human donors, and positively correlated with islet insulin gene expression as well as secretion capacity in isolated human islets. Silencing or pharmacological blockade of CaV3.2 attenuates glucose-stimulated cytosolic Ca2+ signaling, membrane potential, and insulin release. Moreover, the endoplasmic reticulum (ER) Ca2+ store depletion is also impaired in CaV3.2-silenced β-cells. The linkage between T-type (CaV3.2) and L-type CaV channels is further identified by the finding that the intracellular Ca2+ signaling conducted by CaV3.2 is highly dependent on the activation of L-type CaV channels. In addition, CACNA1H expression is significantly associated with the islet predominant L-type CACNA1C (CaV1.2) and CACNA1D (CaV1.3) genes in human pancreatic islets. In conclusion, our data suggest the essential functions of the T-type CaV3.2 subunit as a mediator of β-cell Ca2+ signaling and membrane potential needed for insulin secretion, and in connection with L-type CaV channels.
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Affiliation(s)
- Mohammad Barghouth
- Unit of Islet Pathophysiology, Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Malmö, 20502, Sweden
| | - Yingying Ye
- Unit of Islet Pathophysiology, Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Malmö, 20502, Sweden.
| | - Alexandros Karagiannopoulos
- Unit of Islet Cell Exocytosis, Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Malmö 20502, Sweden
| | - Yunhan Ma
- Unit of Islet Pathophysiology, Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Malmö, 20502, Sweden
| | - Elaine Cowan
- Unit of Islet Cell Exocytosis, Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Malmö 20502, Sweden
| | - Rui Wu
- Unit of Islet Pathophysiology, Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Malmö, 20502, Sweden; NanoLund, Lund University, P.O. Box 118, Lund 22100, Sweden
| | - Lena Eliasson
- Unit of Islet Cell Exocytosis, Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Malmö 20502, Sweden
| | - Erik Renström
- Unit of Islet Pathophysiology, Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Malmö, 20502, Sweden
| | - Cheng Luan
- Unit of Islet Pathophysiology, Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Malmö, 20502, Sweden.
| | - Enming Zhang
- Unit of Islet Pathophysiology, Department of Clinical Sciences Malmö, Lund University Diabetes Centre, Lund University, Malmö, 20502, Sweden; NanoLund, Lund University, P.O. Box 118, Lund 22100, Sweden.
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8
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Wang FL, Liu L, Yang CJ, Luan C, Yang J, Chen JJ, Gu QS, Li ZL, Liu XY. Synthesis of α‐Quaternary β‐Lactams via Copper‐Catalyzed Enantioconvergent Radical C(sp3)–C(sp2) Cross‐Coupling with Organoboronate Esters. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202214709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Fu-Li Wang
- Southern University of Science and Technology Chemistry CHINA
| | - Lin Liu
- Great Bay University School of Science and Institute of Scientific Research CHINA
| | - Chang-Jiang Yang
- Great Bay University School of Science and Institute of Scientific Research CHINA
| | - Cheng Luan
- Southern University of Science and Technology Chemistry CHINA
| | - Jing Yang
- Shenzhen Technology University College of Health Science and Environmental Engineering CHINA
| | - Ji-Jun Chen
- Southern University of Science and Technology Chemistry CHINA
| | - Qiang-Shuai Gu
- Southern University of Science and Technology Chemistry CHINA
| | - Zhong-Liang Li
- Southern University of Science and Technology Chemistry CHINA
| | - Xin-Yuan Liu
- Southern University of Science and Technology Department of chemistry No. 1088, Xueyuan Blvd., Xili, Nanshan District 518055 Shenzhen CHINA
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9
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Yang W, Liu L, Guo J, Wang S, Zhang J, Fan L, Tian Y, Wang L, Luan C, Li Z, He C, Wang X, Gu Q, Liu X. Enantioselective Hydroxylation of Dihydrosilanes to Si‐Chiral Silanols Catalyzed by In Situ Generated Copper(II) Species. Angew Chem Int Ed Engl 2022; 61:e202205743. [DOI: 10.1002/anie.202205743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Indexed: 12/14/2022]
Affiliation(s)
- Wu Yang
- Hoffmann Institute of Advanced Materials Postdoctoral Innovation Practice Base Shenzhen Polytechnic Nanshan District, Shenzhen 518055 P. R. China
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 P. R. China
- Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 P. R. China
| | - Lin Liu
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 P. R. China
- Great Bay University Dongguan 523000 P. R. China
| | - Jiandong Guo
- Hoffmann Institute of Advanced Materials Postdoctoral Innovation Practice Base Shenzhen Polytechnic Nanshan District, Shenzhen 518055 P. R. China
| | - Shou‐Guo Wang
- Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 P. R. China
| | - Jia‐Yong Zhang
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 P. R. China
| | - Li‐Wen Fan
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 P. R. China
| | - Yu Tian
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 P. R. China
| | - Li‐Lei Wang
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 P. R. China
| | - Cheng Luan
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 P. R. China
| | - Zhong‐Liang Li
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 P. R. China
| | - Chuan He
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 P. R. China
| | - Xiaotai Wang
- Department of Chemistry University of Colorado Denver Denver CO 80217-3364 USA
| | - Qiang‐Shuai Gu
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 P. R. China
| | - Xin‐Yuan Liu
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 P. R. China
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10
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Yang W, Liu L, Guo J, Wang SG, Zhang JY, Fan LW, Tian Y, Wang LL, Luan C, Li ZL, He C, Wang X, Gu QS, Liu XY. Enantioselective Hydroxylation of Dihydrosilanes to Si‐Chiral Silanols Catalyzed by In Situ Generated Copper(II) Species. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wu Yang
- Shenzhen Polytechnic Hoffmann Institute of Advanced Materials CHINA
| | - Lin Liu
- Southern University of Science and Technology Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis CHINA
| | - Jiandong Guo
- Shenzhen Polytechnic Hoffmann Institute of Advanced Materials, Postdoctoral Innovation Practice Base CHINA
| | - Shou-Guo Wang
- SIAT: Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen Institutes of Advanced Technology CHINA
| | - Jia-Yong Zhang
- Southern University of Science and Technology Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis CHINA
| | - Li-Wen Fan
- Southern University of Science and Technology Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis CHINA
| | - Yu Tian
- Southern University of Science and Technology Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis CHINA
| | - Li-Lei Wang
- Southern University of Science and Technology Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis CHINA
| | - Cheng Luan
- Southern University of Science and Technology Academy for Advanced Interdisciplinary Studies and Department of Chemistry CHINA
| | - Zhong-Liang Li
- Southern University of Science and Technology Academy for Advanced Interdisciplinary Studies and Department of Chemistry CHINA
| | - Chuan He
- Southern University of Science and Technology Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis CHINA
| | - Xiaotai Wang
- University of Colorado Department of Chemistry UNITED STATES
| | - Qiang-Shuai Gu
- Southern University of Science and Technology Academy for Advanced Interdisciplinary Studies and Department of Chemistry CHINA
| | - Xin-Yuan Liu
- Southern University of Science and Technology Department of chemistry No. 1088, Xueyuan Blvd., Xili, Nanshan District 518055 Shenzhen CHINA
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11
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Cataldo LR, Singh T, Achanta K, Bsharat S, Prasad RB, Luan C, Renström E, Eliasson L, Artner I. MAFA and MAFB regulate exocytosis-related genes in human β-cells. Acta Physiol (Oxf) 2022; 234:e13761. [PMID: 34978761 DOI: 10.1111/apha.13761] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 12/22/2021] [Accepted: 01/01/2022] [Indexed: 12/13/2022]
Abstract
AIMS Reduced expression of exocytotic genes is associated with functional defects in insulin exocytosis contributing to impaired insulin secretion and type 2 diabetes (T2D) development. MAFA and MAFB transcription factors regulate β-cell physiology, and their gene expression is reduced in T2D β cells. We investigate if loss of MAFA and MAFB in human β cells contributes to T2D progression by regulating genes required for insulin exocytosis. METHODS Three approaches were performed: (1) RNAseq analysis with the focus on exocytosis-related genes in MafA-/- mouse islets, (2) correlational analysis between MAFA, MAFB and exocytosis-related genes in human islets and (3) MAFA and MAFB silencing in human islets and EndoC-βH1 cells followed by functional in vitro studies. RESULTS The expression of 30 exocytosis-related genes was significantly downregulated in MafA-/- mouse islets. In human islets, the expression of 29 exocytosis-related genes correlated positively with MAFA and MAFB. Eight exocytosis-related genes were downregulated in MafA-/- mouse islets and positively correlated with MAFA and MAFB in human islets. From this analysis, the expression of RAB3A, STXBP1, UNC13A, VAMP2, NAPA, NSF, STX1A and SYT7 was quantified after acute MAFA or MAFB silencing in EndoC-βH1 cells and human islets. MAFA and MAFB silencing resulted in impaired insulin secretion and reduced STX1A, SYT7 and STXBP1 (EndoC-βH1) and STX1A (human islets) mRNA expression. STX1A and STXBP1 protein expression was also impaired in islets from T2D donors which lack MAFA expression. CONCLUSION Our data indicate that STXBP1 and STX1A are important MAFA/B-regulated exocytosis genes which may contribute to insulin exocytosis defects observed in MAFA-deficient human T2D β cells.
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Affiliation(s)
- Luis Rodrigo Cataldo
- Endocrine Cell Differentiation and Function Group Stem Cell Centre Lund University Lund Sweden
- Lund University Diabetes Centre Clinical Research Center Malmo Sweden
- The Novo Nordisk Foundation Centre for Basic Metabolic Research Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
| | - Tania Singh
- Endocrine Cell Differentiation and Function Group Stem Cell Centre Lund University Lund Sweden
- Lund University Diabetes Centre Clinical Research Center Malmo Sweden
| | - Kavya Achanta
- Endocrine Cell Differentiation and Function Group Stem Cell Centre Lund University Lund Sweden
- Lund University Diabetes Centre Clinical Research Center Malmo Sweden
| | - Sara Bsharat
- Endocrine Cell Differentiation and Function Group Stem Cell Centre Lund University Lund Sweden
- Lund University Diabetes Centre Clinical Research Center Malmo Sweden
| | - Rashmi B. Prasad
- Lund University Diabetes Centre Clinical Research Center Malmo Sweden
- Department of Clinical Sciences in Malmö Malmo Sweden
| | - Cheng Luan
- Lund University Diabetes Centre Clinical Research Center Malmo Sweden
| | - Erik Renström
- Lund University Diabetes Centre Clinical Research Center Malmo Sweden
| | - Lena Eliasson
- Lund University Diabetes Centre Clinical Research Center Malmo Sweden
- Department of Clinical Sciences in Malmö Malmo Sweden
- Islet Cell Exocytosis Lund University Lund Sweden
| | - Isabella Artner
- Endocrine Cell Differentiation and Function Group Stem Cell Centre Lund University Lund Sweden
- Lund University Diabetes Centre Clinical Research Center Malmo Sweden
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12
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Bompada P, Goncalves I, Wu C, Gao R, Sun J, Mir BA, Luan C, Renström E, Groop L, Weng J, Hansson O, Edsfeldt A, De Marinis Y. Epigenome-Wide Histone Acetylation Changes in Peripheral Blood Mononuclear Cells in Patients with Type 2 Diabetes and Atherosclerotic Disease. Biomedicines 2021; 9:biomedicines9121908. [PMID: 34944721 PMCID: PMC8698994 DOI: 10.3390/biomedicines9121908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/30/2021] [Accepted: 12/06/2021] [Indexed: 11/16/2022] Open
Abstract
There is emerging evidence of an association between epigenetic modifications, glycemic control and atherosclerosis risk. In this study, we mapped genome-wide epigenetic changes in patients with type 2 diabetes (T2D) and advanced atherosclerotic disease. We performed chromatin immunoprecipitation sequencing (ChIP-seq) using a histone 3 lysine 9 acetylation (H3K9ac) mark in peripheral blood mononuclear cells from patients with atherosclerosis with T2D (n = 8) or without T2D (ND, n = 10). We mapped epigenome changes and identified 23,394 and 13,133 peaks in ND and T2D individuals, respectively. Out of all the peaks, 753 domains near the transcription start site (TSS) were unique to T2D. We found that T2D in atherosclerosis leads to an H3K9ac increase in 118, and loss in 63 genomic regions. Furthermore, we discovered an association between the genomic locations of significant H3K9ac changes with genetic variants identified in previous T2D GWAS. The transcription factor 7-like 2 (TCF7L2) rs7903146, together with several human leukocyte antigen (HLA) variants, were among the domains with the most dramatic changes of H3K9ac enrichments. Pathway analysis revealed multiple activated pathways involved in immunity, including type 1 diabetes. Our results present novel evidence on the interaction between genetics and epigenetics, as well as epigenetic changes related to immunity in patients with T2D and advanced atherosclerotic disease.
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Affiliation(s)
- Pradeep Bompada
- Department of Clinical Sciences, Lund University, 20502 Malmö, Sweden; (P.B.); (C.W.); (B.A.M.); (C.L.); (E.R.); (L.G.); (O.H.)
| | - Isabel Goncalves
- Cardiovascular Research-Translational Studies, Institution of Clinical Science Malmö, Lund University, 20502 Malmö, Sweden; (I.G.); (J.S.); (A.E.)
- Department of Cardiology, Skåne University Hospital, 20502 Malmö, Sweden
| | - Chuanyan Wu
- Department of Clinical Sciences, Lund University, 20502 Malmö, Sweden; (P.B.); (C.W.); (B.A.M.); (C.L.); (E.R.); (L.G.); (O.H.)
- School of Control Science and Engineering, Shandong University, Jinan 250061, China
- School of Intelligent Engineering, Shandong Management University, Jinan 250100, China
| | - Rui Gao
- School of Control Science and Engineering, Shandong University, Jinan 250061, China
- Correspondence: (R.G.); (Y.D.M.); Tel.: +86-135-0531-8418 (R.G.); +46-760-384-868 (Y.D.M.)
| | - Jiangming Sun
- Cardiovascular Research-Translational Studies, Institution of Clinical Science Malmö, Lund University, 20502 Malmö, Sweden; (I.G.); (J.S.); (A.E.)
| | - Bilal Ahmad Mir
- Department of Clinical Sciences, Lund University, 20502 Malmö, Sweden; (P.B.); (C.W.); (B.A.M.); (C.L.); (E.R.); (L.G.); (O.H.)
| | - Cheng Luan
- Department of Clinical Sciences, Lund University, 20502 Malmö, Sweden; (P.B.); (C.W.); (B.A.M.); (C.L.); (E.R.); (L.G.); (O.H.)
| | - Erik Renström
- Department of Clinical Sciences, Lund University, 20502 Malmö, Sweden; (P.B.); (C.W.); (B.A.M.); (C.L.); (E.R.); (L.G.); (O.H.)
| | - Leif Groop
- Department of Clinical Sciences, Lund University, 20502 Malmö, Sweden; (P.B.); (C.W.); (B.A.M.); (C.L.); (E.R.); (L.G.); (O.H.)
- Finnish Institute for Molecular Medicine, University of Helsinki, 00290 Helsinki, Finland
| | - Jianping Weng
- Clinical Research Hospital, Chinese Academy of Sciences, Hefei 230001, China;
- Department of Endocrinology and Metabolism, Division of Life Sciences of Medicine, University of Science and Technology of China, Hefei 230001, China
| | - Ola Hansson
- Department of Clinical Sciences, Lund University, 20502 Malmö, Sweden; (P.B.); (C.W.); (B.A.M.); (C.L.); (E.R.); (L.G.); (O.H.)
- Institute for Molecular Medicine Finland (FIMM), Helsinki University, 00290 Helsinki, Finland
| | - Andreas Edsfeldt
- Cardiovascular Research-Translational Studies, Institution of Clinical Science Malmö, Lund University, 20502 Malmö, Sweden; (I.G.); (J.S.); (A.E.)
- Department of Cardiology, Skåne University Hospital, 20502 Malmö, Sweden
- Wallenberg Center for Molecular Medicine, Lund University, 20502 Malmö, Sweden
| | - Yang De Marinis
- Department of Clinical Sciences, Lund University, 20502 Malmö, Sweden; (P.B.); (C.W.); (B.A.M.); (C.L.); (E.R.); (L.G.); (O.H.)
- School of Control Science and Engineering, Shandong University, Jinan 250061, China
- Clinical Research Hospital, Chinese Academy of Sciences, Hefei 230001, China;
- Department of Endocrinology and Metabolism, Division of Life Sciences of Medicine, University of Science and Technology of China, Hefei 230001, China
- Correspondence: (R.G.); (Y.D.M.); Tel.: +86-135-0531-8418 (R.G.); +46-760-384-868 (Y.D.M.)
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13
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Wu C, Borné Y, Gao R, López Rodriguez M, Roell WC, Wilson JM, Regmi A, Luan C, Aly DM, Peter A, Machann J, Staiger H, Fritsche A, Birkenfeld AL, Tao R, Wagner R, Canouil M, Hong MG, Schwenk JM, Ahlqvist E, Kaikkonen MU, Nilsson P, Shore AC, Khan F, Natali A, Melander O, Orho-Melander M, Nilsson J, Häring HU, Renström E, Wollheim CB, Engström G, Weng J, Pearson ER, Franks PW, White MF, Duffin KL, Vaag AA, Laakso M, Stefan N, Groop L, De Marinis Y. Elevated circulating follistatin associates with an increased risk of type 2 diabetes. Nat Commun 2021; 12:6486. [PMID: 34759311 PMCID: PMC8580990 DOI: 10.1038/s41467-021-26536-w] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 10/05/2021] [Indexed: 12/23/2022] Open
Abstract
The hepatokine follistatin is elevated in patients with type 2 diabetes (T2D) and promotes hyperglycemia in mice. Here we explore the relationship of plasma follistatin levels with incident T2D and mechanisms involved. Adjusted hazard ratio (HR) per standard deviation (SD) increase in follistatin levels for T2D is 1.24 (CI: 1.04–1.47, p < 0.05) during 19-year follow-up (n = 4060, Sweden); and 1.31 (CI: 1.09–1.58, p < 0.01) during 4-year follow-up (n = 883, Finland). High circulating follistatin associates with adipose tissue insulin resistance and non-alcoholic fatty liver disease (n = 210, Germany). In human adipocytes, follistatin dose-dependently increases free fatty acid release. In genome-wide association study (GWAS), variation in the glucokinase regulatory protein gene (GCKR) associates with plasma follistatin levels (n = 4239, Sweden; n = 885, UK, Italy and Sweden) and GCKR regulates follistatin secretion in hepatocytes in vitro. Our findings suggest that GCKR regulates follistatin secretion and that elevated circulating follistatin associates with an increased risk of T2D by inducing adipose tissue insulin resistance. Follistatin promotes in type 2 diabetes (T2D) pathogenesis in model animals and is elevated in patients with T2D. Here the authors report that plasma follistatin associates with increased risk of incident T2D in two longitudinal cohorts, and show that follistatin regulates insulin-induced suppression lipolysis in cultured human adipocytes.
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Affiliation(s)
- Chuanyan Wu
- Department of Clinical Sciences, Lund University, Malmö, Sweden.,School of Control Science and Engineering, Shandong University, Jinan, Shandong, China.,School of Intelligent Engineering, Shandong Management University, Jinan, Shandong, China
| | - Yan Borné
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Rui Gao
- School of Control Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Maykel López Rodriguez
- Institute of Clinical Medicine, Internal Medicine, University of Eastern Finland, Kuopio, Finland.,A.I. Virtanen Institute for Molecular Sciences, Department of Biotechnology and Molecular Medicine, University of Eastern Finland, Kuopio, Finland
| | - William C Roell
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Jonathan M Wilson
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Ajit Regmi
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | - Cheng Luan
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | | | - Andreas Peter
- Department of Internal Medicine IV, Division of Endocrinology, Diabetology and Nephrology; and Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, University of Tübingen, Tübingen, Germany.,Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich, Tübingen, Germany.,German Center for Diabetes Research (DZD), Tübingen, Germany
| | - Jürgen Machann
- Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich, Tübingen, Germany.,German Center for Diabetes Research (DZD), Tübingen, Germany.,Section of Experimental Radiology, Department of Radiology, University of Tübingen, Tübingen, Germany
| | - Harald Staiger
- Department of Internal Medicine IV, Division of Endocrinology, Diabetology and Nephrology; and Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, University of Tübingen, Tübingen, Germany.,Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich, Tübingen, Germany.,German Center for Diabetes Research (DZD), Tübingen, Germany
| | - Andreas Fritsche
- Department of Internal Medicine IV, Division of Endocrinology, Diabetology and Nephrology; and Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, University of Tübingen, Tübingen, Germany.,Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich, Tübingen, Germany.,German Center for Diabetes Research (DZD), Tübingen, Germany
| | - Andreas L Birkenfeld
- Department of Internal Medicine IV, Division of Endocrinology, Diabetology and Nephrology; and Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, University of Tübingen, Tübingen, Germany.,Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich, Tübingen, Germany.,German Center for Diabetes Research (DZD), Tübingen, Germany
| | - Rongya Tao
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Robert Wagner
- Department of Internal Medicine IV, Division of Endocrinology, Diabetology and Nephrology; and Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, University of Tübingen, Tübingen, Germany.,Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich, Tübingen, Germany.,German Center for Diabetes Research (DZD), Tübingen, Germany
| | - Mickaël Canouil
- Inserm U1283 / CNRS UMR 8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille; University of Lille, Lille University Hospital, Lille, France
| | - Mun-Gwan Hong
- Affinity Proteomics, Science for Life Laboratory, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Jochen M Schwenk
- Affinity Proteomics, Science for Life Laboratory, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Emma Ahlqvist
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Minna U Kaikkonen
- A.I. Virtanen Institute for Molecular Sciences, Department of Biotechnology and Molecular Medicine, University of Eastern Finland, Kuopio, Finland
| | - Peter Nilsson
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Angela C Shore
- NIHR Exeter Clinical Research Facility, Royal Devon and Exeter Hospital and University of Exeter Medical School, Exeter, Devon, UK
| | - Faisel Khan
- Division of Systems Medicine, University of Dundee, Ninewells Hospital & Medical School, Dundee, UK
| | - Andrea Natali
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Olle Melander
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | | | - Jan Nilsson
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Hans-Ulrich Häring
- Department of Internal Medicine IV, Division of Endocrinology, Diabetology and Nephrology; and Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, University of Tübingen, Tübingen, Germany.,Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich, Tübingen, Germany.,German Center for Diabetes Research (DZD), Tübingen, Germany
| | - Erik Renström
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Claes B Wollheim
- Department of Clinical Sciences, Lund University, Malmö, Sweden.,Department of Cell Physiology and Metabolism, University Medical Centre, Geneva, Switzerland
| | - Gunnar Engström
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Jianping Weng
- Department of Endocrinology and Metabolism, Division of Life Sciences of Medicine, University of Science and Technology of China, Hefei, China
| | - Ewan R Pearson
- Division of Population Health & Genomics, School of Medicine, University of Dundee, Dundee, DD1 9SY, UK
| | - Paul W Franks
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Morris F White
- Division of Endocrinology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kevin L Duffin
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN, USA
| | | | - Markku Laakso
- Institute of Clinical Medicine, Internal Medicine, University of Eastern Finland, Kuopio, Finland.,Department of Medicine, Kuopio University Hospital, Kuopio, Finland
| | - Norbert Stefan
- Department of Internal Medicine IV, Division of Endocrinology, Diabetology and Nephrology; and Department for Diagnostic Laboratory Medicine, Institute for Clinical Chemistry and Pathobiochemistry, University Hospital Tübingen, University of Tübingen, Tübingen, Germany.,Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich, Tübingen, Germany.,German Center for Diabetes Research (DZD), Tübingen, Germany
| | - Leif Groop
- Department of Clinical Sciences, Lund University, Malmö, Sweden.,Finnish Institute for Molecular Medicine, University of Helsinki, Helsinki, Finland
| | - Yang De Marinis
- Department of Clinical Sciences, Lund University, Malmö, Sweden. .,School of Control Science and Engineering, Shandong University, Jinan, Shandong, China. .,Department of Endocrinology and Metabolism, Division of Life Sciences of Medicine, University of Science and Technology of China, Hefei, China.
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14
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Zhang YF, Dong XY, Cheng JT, Yang NY, Wang LL, Wang FL, Luan C, Liu J, Li ZL, Gu QS, Liu XY. Enantioconvergent Cu-Catalyzed Radical C-N Coupling of Racemic Secondary Alkyl Halides to Access α-Chiral Primary Amines. J Am Chem Soc 2021; 143:15413-15419. [PMID: 34505516 DOI: 10.1021/jacs.1c07726] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
α-Chiral alkyl primary amines are virtually universal synthetic precursors for all other α-chiral N-containing compounds ubiquitous in biological, pharmaceutical, and material sciences. The enantioselective amination of common alkyl halides with ammonia is appealing for potential rapid access to α-chiral primary amines, but has hitherto remained rare due to the multifaceted difficulties in using ammonia and the underdeveloped C(sp3)-N coupling. Here we demonstrate sulfoximines as excellent ammonia surrogates for enantioconvergent radical C-N coupling with diverse racemic secondary alkyl halides (>60 examples) by copper catalysis under mild thermal conditions. The reaction efficiently provides highly enantioenriched N-alkyl sulfoximines (up to 99% yield and >99% ee) featuring secondary benzyl, propargyl, α-carbonyl alkyl, and α-cyano alkyl stereocenters. In addition, we have converted the masked α-chiral primary amines thus obtained to various synthetic building blocks, ligands, and drugs possessing α-chiral N-functionalities, such as carbamate, carboxylamide, secondary and tertiary amine, and oxazoline, with commonly seen α-substitution patterns. These results shine light on the potential of enantioconvergent radical cross-coupling as a general chiral carbon-heteroatom formation strategy.
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Affiliation(s)
- Yu-Feng Zhang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xiao-Yang Dong
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jiang-Tao Cheng
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ning-Yuan Yang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Li-Lei Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Fu-Li Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Cheng Luan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Juan Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xin-Yuan Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
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15
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Cataldo LR, Vishnu N, Singh T, Bertonnier-Brouty L, Bsharat S, Luan C, Renström E, Prasad RB, Fex M, Mulder H, Artner I. The MafA-target gene PPP1R1A regulates GLP1R-mediated amplification of glucose-stimulated insulin secretion in β-cells. Metabolism 2021; 118:154734. [PMID: 33631146 DOI: 10.1016/j.metabol.2021.154734] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 02/07/2021] [Accepted: 02/15/2021] [Indexed: 12/11/2022]
Abstract
The amplification of glucose-stimulated insulin secretion (GSIS) through incretin signaling is critical for maintaining physiological glucose levels. Incretins, like glucagon-like peptide 1 (GLP1), are a target of type 2 diabetes drugs aiming to enhance insulin secretion. Here we show that the protein phosphatase 1 inhibitor protein 1A (PPP1R1A), is expressed in β-cells and that its expression is reduced in dysfunctional β-cells lacking MafA and upon acute MafA knock down. MafA is a central regulator of GSIS and β-cell function. We observed a strong correlation of MAFA and PPP1R1A mRNA levels in human islets, moreover, PPP1R1A mRNA levels were reduced in type 2 diabetic islets and positively correlated with GLP1-mediated GSIS amplification. PPP1R1A silencing in INS1 (832/13) β-cells impaired GSIS amplification, PKA-target protein phosphorylation, mitochondrial coupling efficiency and also the expression of critical β-cell marker genes like MafA, Pdx1, NeuroD1 and Pax6. Our results demonstrate that the β-cell transcription factor MafA is required for PPP1R1A expression and that reduced β-cell PPP1R1A levels impaired β-cell function and contributed to β-cell dedifferentiation during type 2 diabetes. Loss of PPP1R1A in type 2 diabetic β-cells may explains the unresponsiveness of type 2 diabetic patients to GLP1R-based treatments.
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Affiliation(s)
- Luis Rodrigo Cataldo
- Endocrine Cell Differentiation and Function group, Stem Cell Centre, Lund University, Sweden; Lund University Diabetes Centre, Clinical Research Center, Sweden.
| | - Neelanjan Vishnu
- Lund University Diabetes Centre, Clinical Research Center, Sweden
| | - Tania Singh
- Endocrine Cell Differentiation and Function group, Stem Cell Centre, Lund University, Sweden; Lund University Diabetes Centre, Clinical Research Center, Sweden
| | - Ludivine Bertonnier-Brouty
- Endocrine Cell Differentiation and Function group, Stem Cell Centre, Lund University, Sweden; Lund University Diabetes Centre, Clinical Research Center, Sweden
| | - Sara Bsharat
- Endocrine Cell Differentiation and Function group, Stem Cell Centre, Lund University, Sweden; Lund University Diabetes Centre, Clinical Research Center, Sweden
| | - Cheng Luan
- Lund University Diabetes Centre, Clinical Research Center, Sweden
| | - Erik Renström
- Lund University Diabetes Centre, Clinical Research Center, Sweden
| | - Rashmi B Prasad
- Lund University Diabetes Centre, Clinical Research Center, Sweden; Department of Clinical Sciences in Malmö, Sweden
| | - Malin Fex
- Lund University Diabetes Centre, Clinical Research Center, Sweden
| | - Hindrik Mulder
- Lund University Diabetes Centre, Clinical Research Center, Sweden
| | - Isabella Artner
- Endocrine Cell Differentiation and Function group, Stem Cell Centre, Lund University, Sweden; Lund University Diabetes Centre, Clinical Research Center, Sweden.
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16
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Yu J, Yang NY, Cheng JT, Zhan TY, Luan C, Ye L, Gu QS, Li ZL, Chen GQ, Liu XY. Copper-Catalyzed Radical 1,2-Carbotrifluoromethylselenolation of Alkenes under Ambient Conditions. Org Lett 2021; 23:1945-1949. [PMID: 33625234 DOI: 10.1021/acs.orglett.1c00436] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have described a copper-catalyzed radical 1,2-carbotrifluoromethylselenolation of alkenes using the readily available alkyl halides and (Me4N)SeCF3 salt. Critical to the success is the use of a proline-based N,N,P-ligand to enhance the reducing capability of copper for easy conversion of diverse alkyl halides to the corresponding radicals via a single-electron transfer process. The reaction features a broad substrate scope, including various mono-, di-, and trisubstituted alkenes with many functional groups.
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Affiliation(s)
- Jiao Yu
- College of Chemistry and Environmental Engineering, Shenzhen University, 1066 Xueyuan Road, Shenzhen 518071, China.,College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.,Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ning-Yuan Yang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jiang-Tao Cheng
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Tian-Ya Zhan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Cheng Luan
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Liu Ye
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Guo-Qiang Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, 1066 Xueyuan Road, Shenzhen 518071, China
| | - Xin-Yuan Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
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17
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Ye Y, Barghouth M, Luan C, Kazim A, Zhou Y, Eliasson L, Zhang E, Hansson O, Thevenin T, Renström E. The TCF7L2-dependent high-voltage activated calcium channel subunit α2δ-1 controls calcium signaling in rodent pancreatic beta-cells. Mol Cell Endocrinol 2020; 502:110673. [PMID: 31805307 DOI: 10.1016/j.mce.2019.110673] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 11/19/2019] [Accepted: 11/30/2019] [Indexed: 12/16/2022]
Abstract
The transcription factor TCF7L2 remains the most important diabetes gene identified to date and genetic risk carriers exhibit lower insulin secretion. We show that Tcf7l2 regulates the auxiliary subunit of voltage-gated Ca2+ channels, Cacna2d1 gene/α2δ-1 protein levels. Furthermore, suppression of α2δ-1 decreased voltage-gated Ca2+ currents and high glucose/depolarization-evoked Ca2+ signaling which mimicked the effect of silencing of Tcf7l2. This appears to be the result of impaired voltage-gated Ca2+ channel trafficking to the plasma membrane, as Cav1.2 channels accumulated in the recycling endosomes after α2δ-1 suppression, in clonal as well as primary rodent beta-cells. This impaired the capacity for glucose-induced insulin secretion in Cacna2d1-silenced cells. Overexpression of α2δ-1 increased high-glucose/K+-stimulated insulin secretion. Furthermore, overexpression of α2δ-1 in Tcf7l2-silenced cells rescued the Tcf7l2-dependent impairment of Ca2+ signaling, but not the reduced insulin secretion. Taken together, these data clarify the connection between Tcf7l2, α2δ-1 in Ca2+-dependent insulin secretion.
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Affiliation(s)
- Yingying Ye
- Lund University, Department of Clinical Sciences, Islet Pathophysiology Group, Sweden
| | - Mohammad Barghouth
- Lund University, Department of Clinical Sciences, Islet Pathophysiology Group, Sweden
| | - Cheng Luan
- Lund University, Department of Clinical Sciences, Islet Pathophysiology Group, Sweden
| | - Abdulla Kazim
- Lund University, Department of Clinical Sciences, Islet Pathophysiology Group, Sweden
| | - Yuedan Zhou
- Lund University, Department of Clinical Sciences, Diabetes and Endocrinology Group, Sweden
| | - Lena Eliasson
- Lund University, Department of Clinical Sciences, Islet Pathophysiology Group, Sweden
| | - Enming Zhang
- Lund University, Department of Clinical Sciences, Islet Pathophysiology Group, Sweden
| | - Ola Hansson
- Lund University, Department of Clinical Sciences, Diabetes and Endocrinology Group, Sweden
| | - Thomas Thevenin
- Lund University, Department of Clinical Sciences, Islet Pathophysiology Group, Sweden
| | - Erik Renström
- Lund University, Department of Clinical Sciences, Islet Pathophysiology Group, Sweden.
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18
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Zhao Z, Liu X, Luan C, Liu X, Wang D, Qin T, Sui L, Zhang W. Architecting hierarchical shell porosity of hollow prussian blue-derived iron oxide for enhanced Li storage. J Microsc 2019; 276:53-62. [PMID: 31603242 DOI: 10.1111/jmi.12836] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 09/12/2019] [Accepted: 10/01/2019] [Indexed: 11/28/2022]
Abstract
Delicate architecture of active material enables improving the performacne of lithium ion batteries. Environmental-friendly Fe2 O3 anode has high theoretical specific capacity (1007 mAh g-1 ) in lithium ion batteries, but suffers from structural collapsing and poor electronic conductivity. Herein, we design an unique hierarchical iron oxide by regulating the initial precursor prussian blue and targeting hollow-shell structures with full consideration of temperature controls. Among them, Fe2 O3 with a sheet-crossing structure at 650°C, affords obvious advantages of improved electronic conductivity, short ionic diffusion length, prevented particle agglomeration, and buffer volume change. Thus, we achieve a superior discharge specific capacity of 611 mAh g-1 at 500 mA g-1 . Regulating hierarchical structure of prussian blue-assisted oxides enables effectively enchancing Li storge performance. LAY DESCRIPTION: Nanoparticle self-assembly, one of bottom-up methods is often used to prepare hollow hierarchical structures, whereas it suffers from low productivity and insufficient stability. Hence, we designed a unique hierarchical iron oxide by top-down method with regulating the initial precursor PB and targeting hollow-shell structures through full consideration of temperature controls. Delicate architecture of active material enables improving the performacne of lithium ion batteries. Environmental-friendly Fe2 O3 anode has high theoretical specific capacity (1007 mAh g-1 ) in lithium ion batteries, but suffers from structural collapsing and poor electronic conductivity. Hence, we prepared Prussian Blue (PB) materials with different sizes and calcined them at different temperatures. We found that no matter what the size of PB, the sheet-crossing morphology appeared at 650°C, and the interlaced morphology was the key to improve the performance of lithium batteries. If the size of PB precursor is too large or too small, it has adverse effects on lithium batteries. Only when the size and calcination temperature of PB precursor reach the optimum state, the best performance can be obtained. The calcination PB-K-3 at 650°C has a unique hierarchical structure of sheet-crossing. An obvious advantages include the prevention of particle agglomeration, short ionic diffusion lengths, and buffering volume changes. As a consequence, 611 mAh g-1 was obtained at the current density of 500 mA g-1 . In addition, we observed the structural changes of electrode plates at different reaction potentials, according to the reaction equation of Fe2 O3 +xLi+ +xe→Lix Fe2 O3 . With the proceeding charge process, the voltage increases from 0.01 to 3 V, the lithium ions gradually comes out of the iron oxide electrode surface. Whereas the discharging process reverses the aforementioned phenomena. Even if the changing volumes, however, the shape of cubic blocks for the PB-K-3 is preserved at different potentials. Taking these advantages into account, our designed MOFs-derived struture was an effective way to prepare hollow hierarchical structure with enhanced Li storage performacne. Such work is expected to facilitate the design of new electrode structure of lithium batteries.
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Affiliation(s)
- Z Zhao
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China
| | - X Liu
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China.,College of Biological and Agricultural Engineering, Jilin University, Changchun, China
| | - C Luan
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China
| | - X Liu
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China
| | - D Wang
- State Key Laboratory of Chem/Bio-Sensing and Chemometrics, Provincial Hunan Key Laboratory for Graphene Materials and Devices, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China
| | - T Qin
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China
| | - L Sui
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China
| | - W Zhang
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China.,Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China
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19
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Hao B, Chen Z, Zeng G, Huang L, Luan C, Xie Z, Chen J, Bao M, Tian X, Xu B, Wang Y, Wu J, Xia S, Yuan L, Huang J. Efficacy, safety and immunogenicity of live attenuated varicella vaccine in healthy children in China: double-blind, randomized, placebo-controlled clinical trial. Clin Microbiol Infect 2019; 25:1026-1031. [DOI: 10.1016/j.cmi.2018.12.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 12/18/2018] [Accepted: 12/22/2018] [Indexed: 10/27/2022]
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20
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Luan C, Ye Y, Singh T, Barghouth M, Eliasson L, Artner I, Zhang E, Renström E. The calcium channel subunit gamma-4 is regulated by MafA and necessary for pancreatic beta-cell specification. Commun Biol 2019; 2:106. [PMID: 30911681 PMCID: PMC6420573 DOI: 10.1038/s42003-019-0351-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 02/08/2019] [Indexed: 12/22/2022] Open
Abstract
Voltage-gated Ca2+ (CaV) channels trigger glucose-induced insulin secretion in pancreatic beta-cell and their dysfunction increases diabetes risk. These heteromeric complexes include the main subunit alpha1, and the accessory ones, including subunit gamma that remains unexplored. Here, we demonstrate that CaV gamma subunit 4 (CaVγ4) is downregulated in islets from human donors with diabetes, diabetic Goto-Kakizaki (GK) rats, as well as under conditions of gluco-/lipotoxic stress. Reduction of CaVγ4 expression results in decreased expression of L-type CaV1.2 and CaV1.3, thereby suppressing voltage-gated Ca2+ entry and glucose stimulated insulin exocytosis. The most important finding is that CaVγ4 expression is controlled by the transcription factor responsible for beta-cell specification, MafA, as verified by chromatin immunoprecipitation and experiments in beta-cell specific MafA knockout mice (MafA Δβcell ). Taken together, these findings suggest that CaVγ4 is necessary for maintaining a functional differentiated beta-cell phenotype. Treatment aiming at restoring CaVγ4 may help to restore beta-cell function in diabetes.
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Affiliation(s)
- Cheng Luan
- Lund University Diabetes Center, Department of Clinical Sciences Malmö, Lund University, 202 13 Malmö, Sweden
| | - Yingying Ye
- Lund University Diabetes Center, Department of Clinical Sciences Malmö, Lund University, 202 13 Malmö, Sweden
| | - Tania Singh
- Stem Cell Center, Department of Laboratory Medicine, Lund University, 221 85 Lund, Sweden
| | - Mohammad Barghouth
- Lund University Diabetes Center, Department of Clinical Sciences Malmö, Lund University, 202 13 Malmö, Sweden
| | - Lena Eliasson
- Lund University Diabetes Center, Department of Clinical Sciences Malmö, Lund University, 202 13 Malmö, Sweden
| | - Isabella Artner
- Lund University Diabetes Center, Department of Clinical Sciences Malmö, Lund University, 202 13 Malmö, Sweden
- Stem Cell Center, Department of Laboratory Medicine, Lund University, 221 85 Lund, Sweden
| | - Enming Zhang
- Lund University Diabetes Center, Department of Clinical Sciences Malmö, Lund University, 202 13 Malmö, Sweden
| | - Erik Renström
- Lund University Diabetes Center, Department of Clinical Sciences Malmö, Lund University, 202 13 Malmö, Sweden
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21
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Zhang E, Mohammed Al-Amily I, Mohammed S, Luan C, Asplund O, Ahmed M, Ye Y, Ben-Hail D, Soni A, Vishnu N, Bompada P, De Marinis Y, Groop L, Shoshan-Barmatz V, Renström E, Wollheim CB, Salehi A. Preserving Insulin Secretion in Diabetes by Inhibiting VDAC1 Overexpression and Surface Translocation in β Cells. Cell Metab 2019; 29:64-77.e6. [PMID: 30293774 PMCID: PMC6331340 DOI: 10.1016/j.cmet.2018.09.008] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 07/12/2018] [Accepted: 09/08/2018] [Indexed: 02/08/2023]
Abstract
Type 2 diabetes (T2D) develops after years of prediabetes during which high glucose (glucotoxicity) impairs insulin secretion. We report that the ATP-conducting mitochondrial outer membrane voltage-dependent anion channel-1 (VDAC1) is upregulated in islets from T2D and non-diabetic organ donors under glucotoxic conditions. This is caused by a glucotoxicity-induced transcriptional program, triggered during years of prediabetes with suboptimal blood glucose control. Metformin counteracts VDAC1 induction. VDAC1 overexpression causes its mistargeting to the plasma membrane of the insulin-secreting β cells with loss of the crucial metabolic coupling factor ATP. VDAC1 antibodies and inhibitors prevent ATP loss. Through direct inhibition of VDAC1 conductance, metformin, like specific VDAC1 inhibitors and antibodies, restores the impaired generation of ATP and glucose-stimulated insulin secretion in T2D islets. Treatment of db/db mice with VDAC1 inhibitor prevents hyperglycemia, and maintains normal glucose tolerance and physiological regulation of insulin secretion. Thus, β cell function is preserved by targeting the novel diabetes executer protein VDAC1.
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Affiliation(s)
- Enming Zhang
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden
| | - Israa Mohammed Al-Amily
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden
| | - Sarheed Mohammed
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden
| | - Cheng Luan
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden
| | - Olof Asplund
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden
| | - Meftun Ahmed
- Academic Hospital Uppsala University, Uppsala, Sweden
| | - Yingying Ye
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden
| | - Danya Ben-Hail
- Department of Life Sciences and the National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Arvind Soni
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden
| | - Neelanjan Vishnu
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden
| | - Pradeep Bompada
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden
| | - Yang De Marinis
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden
| | - Leif Groop
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden; Finnish Institute for Molecular Medicine, Helsinki University, Helsinki, Finland
| | - Varda Shoshan-Barmatz
- Department of Life Sciences and the National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Erik Renström
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden
| | - Claes B Wollheim
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden; Department of Cell Physiology and Metabolism, University Medical Centre, 1 rue Michel-Servet, Geneva 4, Switzerland.
| | - Albert Salehi
- Department of Clinical Sciences, Malmö, Lund University, Jan Waldenströms Gata 35, Malmö 214 28, Sweden.
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Singh T, Sarmiento L, Luan C, Prasad RB, Johansson J, Cataldo LR, Renström E, Soneji S, Cilio C, Artner I. MafA Expression Preserves Immune Homeostasis in Human and Mouse Islets. Genes (Basel) 2018; 9:genes9120644. [PMID: 30567413 PMCID: PMC6315686 DOI: 10.3390/genes9120644] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 12/12/2018] [Indexed: 02/07/2023] Open
Abstract
Type 1 (T1D) and type 2 (T2D) diabetes are triggered by a combination of environmental and/or genetic factors. Maf transcription factors regulate pancreatic beta (β)-cell function, and have also been implicated in the regulation of immunomodulatory cytokines like interferon-β (IFNβ1). In this study, we assessed MAFA and MAFB co-expression with pro-inflammatory cytokine signaling genes in RNA-seq data from human pancreatic islets. Interestingly, MAFA expression was strongly negatively correlated with cytokine-induced signaling (such as IFNAR1, DDX58) and T1D susceptibility genes (IFIH1), whereas correlation of these genes with MAFB was weaker. In order to evaluate if the loss of MafA altered the immune status of islets, MafA deficient mouse islets (MafA−/−) were assessed for inherent anti-viral response and susceptibility to enterovirus infection. MafA deficient mouse islets had elevated basal levels of Ifnβ1, Rig1 (DDX58 in humans), and Mda5 (IFIH1) which resulted in reduced virus propagation in response to coxsackievirus B3 (CVB3) infection. Moreover, an acute knockdown of MafA in β-cell lines also enhanced Rig1 and Mda5 protein levels. Our results suggest that precise regulation of MAFA levels is critical for islet cell-specific cytokine production, which is a critical parameter for the inflammatory status of pancreatic islets.
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Affiliation(s)
- Tania Singh
- Stem Cell Center, Lund University, 22184, Lund, Sweden.
| | | | - Cheng Luan
- Lund University Diabetes Center, 22184, Lund, Sweden.
| | | | | | | | - Erik Renström
- Lund University Diabetes Center, 22184, Lund, Sweden.
| | - Shamit Soneji
- Stem Cell Center, Lund University, 22184, Lund, Sweden.
| | - Corrado Cilio
- Lund University Diabetes Center, 22184, Lund, Sweden.
| | - Isabella Artner
- Stem Cell Center, Lund University, 22184, Lund, Sweden.
- Lund University Diabetes Center, 22184, Lund, Sweden.
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23
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Wang J, Zhu HT, Chen S, Luan C, Xia Y, Shen Y, Li YX, Hua Y, Liang YM. Electrophilic Cyclization and Intermolecular Acetalation of 2-(4-Hydroxybut-1-yn-1-yl)benzaldehydes: Synthesis of Diiodinated Diepoxydibenzo[c,k][1,9]dioxacyclohexadecines. J Org Chem 2017; 82:10641-10649. [PMID: 28862460 DOI: 10.1021/acs.joc.7b01646] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An expedient strategy for the preparation of diiodinated diepoxydibenzo[c,k][1,9]dioxacyclohexadecines from readily available 2-(4-hydroxybut-1-yn-1-yl)benzaldehydes through electrophile-triggered tandem cyclization/intermolecular acetalation sequence has been presented. The electrophilic macrocyclization can be performed under mild conditions and in up to gram quantities. Moreover, palladium-catalyzed coupling and reduction reactions of the resulting iodides could efficiently afford oxa-macrocycles.
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Affiliation(s)
- Jia Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
| | - Hai-Tao Zhu
- Shannxi Key Laboratory of Phytochemistry, Baoji University of Arts and Sciences , Baoji 721013, People's Republic of China
| | - Si Chen
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
| | - Cheng Luan
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
| | - Yu Xia
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
| | - Yi Shen
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
| | - Ying-Xiu Li
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
| | - Yingxi Hua
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University , Lanzhou 730000, People's Republic of China
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24
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De Marinis Y, Sun J, Bompada P, Domènech Omella J, Luan C, Halu A, Renström E, Sharma A, Ridderstråle M. Regulation of Nuclear Receptor Interacting Protein 1 (NRIP1) Gene Expression in Response to Weight Loss and Exercise in Humans. Obesity (Silver Spring) 2017; 25:1400-1409. [PMID: 28656645 DOI: 10.1002/oby.21899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 04/20/2017] [Accepted: 05/11/2017] [Indexed: 01/12/2023]
Abstract
OBJECTIVE Nuclear receptor interacting protein 1 (NRIP1) is an important energy regulator, but few studies have addressed its role in humans. This study investigated adipose tissue and skeletal muscle NRIP1 gene expression and serum levels in response to weight loss and exercise in humans. METHODS NRIP1 expression was measured by microarray and serum NRIP1 by ELISA and Western blotting. Skeletal muscle transcriptomes were analyzed from Gene Expression Omnibus databases. Network-based proximity analysis was performed on the proximity of NRIP1 interacting genes in the human interactome. RESULTS In patients with obesity, adipose tissue NRIP1 mRNA expression increased during weight loss and weight maintenance and showed strong associations with metabolic markers and anthropometric parameters. Serum NRIP1 protein levels also increased after weight loss. In skeletal muscle, imposed rest increased NRIP1 expression by 80%, and strength training increased expression by ∼25% compared to baseline. Following rest, NRIP1 expression became sensitive to insulin stimulation. After re-training, NRIP1 expression decreased. Interactome analysis showed significant proximity of NRIP1 interacting partners to the obesity network/module. CONCLUSIONS NRIP1 gene expression and serum levels are strongly associated with metabolic states such as obesity, weight loss, different types of exercise, and peripheral tissue insulin resistance, potentially as a mediator of sedentary effects.
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Affiliation(s)
- Yang De Marinis
- Diabetes and Endocrinology, Lund University Diabetes Centre, Lund University, Malmö, Sweden
| | - Jiangming Sun
- Clinical Obesity Research, Lund University Diabetes Centre, Lund University, Malmö, Sweden
| | - Pradeep Bompada
- Diabetes and Endocrinology, Lund University Diabetes Centre, Lund University, Malmö, Sweden
| | - Judit Domènech Omella
- Diabetes and Endocrinology, Lund University Diabetes Centre, Lund University, Malmö, Sweden
| | - Cheng Luan
- Islet Pathophysiology, Department of Clinical Sciences, Lund University Diabetes Centre, Lund University, Malmö, Sweden
| | - Arda Halu
- Channing Division of Network Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Erik Renström
- Islet Pathophysiology, Department of Clinical Sciences, Lund University Diabetes Centre, Lund University, Malmö, Sweden
| | - Amitabh Sharma
- Channing Division of Network Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Center for Complex Network Research, Department of Physics, Northeastern University, Boston, Massachusetts, USA
- Center for Cancer Systems Biology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
| | - Martin Ridderstråle
- Clinical Obesity Research, Lund University Diabetes Centre, Lund University, Malmö, Sweden
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Steno Diabetes Center A/S, Gentofte, Denmark
- Novo Nordisk A/S, Søborg, Denmark
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Liu X, Yang K, Zhao S, Li T, Luan C, Guo X, Zhao B, Zheng L, Su L, Xu J, Bian J. Growth and lasing performance of a Tm,Y:CaF 2 crystal. Opt Lett 2017; 42:2567-2570. [PMID: 28957286 DOI: 10.1364/ol.42.002567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 06/05/2017] [Indexed: 06/07/2023]
Abstract
A Tm3+ ion and Y3+ ion co-doped CaF2 crystal was grown and characterized, in which spectral and lasing performance was presented for the first time, to the best of our knowledge. Under diode end-pumping, in a continuous-wave regime, maximum output power of 453 mW was delivered under an absorption pump power of 2.5 W, corresponding to an optical-to-optical conversion efficiency of 17.9% and a slope efficiency of 21%. With a birefringent quartz plate, wavelength-tunable operation with a tunable range of more than 190 nm was realized. The results show that Tm,Y:CaF2 is a promising laser crystal operating in a spectral region ranging from 1850 nm to 2050 nm.
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Luan C, Yang K, Zhao J, Zhao S, Li T, Zhang H, He J, Song L, Dekorsy T, Guina M, Zheng L. Diode-pumped mode-locked Tm:LuAG laser at 2 μm based on GaSb-SESAM. Opt Lett 2017; 42:839-842. [PMID: 28198878 DOI: 10.1364/ol.42.000839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Mode-locking of a directly diode-pumped Tm:LuAG laser is demonstrated using GaSb-based semiconductor saturable absorber mirrors (SESAMs). Stable and self-starting mode-locked operation was realized, generating pulses as short as 13.6 ps at 2024 nm with a maximum output power of 98 mW. Two GaInAs-based SESAMs were used for comparison with the operation based upon the use of the GaSb SESAM; in this case, longer pulses with durations of 27 ps and 34 ps were obtained under the same experimental conditions. Our work sets a new record in pulse duration for mode-locked Tm:LuAG lasers and confirms that lattice-matched GaSb-based SESAMs are beneficial for mode-locked solid-state lasers in the 2 μm range.
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Bompada P, Atac D, Luan C, Andersson R, Omella JD, Laakso EO, Wright J, Groop L, De Marinis Y. Histone acetylation of glucose-induced thioredoxin-interacting protein gene expression in pancreatic islets. Int J Biochem Cell Biol 2016; 81:82-91. [DOI: 10.1016/j.biocel.2016.10.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 10/20/2016] [Accepted: 10/24/2016] [Indexed: 01/09/2023]
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28
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Ganic E, Singh T, Luan C, Fadista J, Johansson JK, Cyphert HA, Bennet H, Storm P, Prost G, Ahlenius H, Renström E, Stein R, Groop L, Fex M, Artner I. MafA-Controlled Nicotinic Receptor Expression Is Essential for Insulin Secretion and Is Impaired in Patients with Type 2 Diabetes. Cell Rep 2016; 14:1991-2002. [PMID: 26904947 PMCID: PMC5918632 DOI: 10.1016/j.celrep.2016.02.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 12/18/2015] [Accepted: 01/22/2016] [Indexed: 11/23/2022] Open
Abstract
Monoamine and acetylcholine neurotransmitters from the autonomic nervous system (ANS) regulate insulin secretion in pancreatic islets. The molecular mechanisms controlling neurotransmitter signaling in islet β cells and their impact on diabetes development are only partially understood. Using a glucose-intolerant, MafA-deficient mouse model, we demonstrate that MAFA controls ANS-mediated insulin secretion by activating the transcription of nicotinic (ChrnB2 and ChrnB4) and adrenergic (Adra2A) receptor genes, which are integral parts of acetylcholine-and monoamine-signaling pathways. We show that acetylcholine-mediated insulin secretion requires nicotinic signaling and that nicotinic receptor expression is positively correlated with insulin secretion and glycemic control in human donor islets. Moreover, polymorphisms spanning MAFA-binding regions within the human CHRNB4 gene are associated with type 2 diabetes. Our data show that MAFA transcriptional activity is required for establishing β cell sensitivity to neurotransmitter signaling and identify nicotinic signaling as a modulator of insulin secretion impaired in type 2 diabetes.
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MESH Headings
- Animals
- Autonomic Nervous System/metabolism
- Binding Sites
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Type 2/genetics
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Female
- Gene Expression Regulation
- Glucose Tolerance Test
- Humans
- Insulin/genetics
- Insulin/metabolism
- Insulin-Secreting Cells/metabolism
- Insulin-Secreting Cells/pathology
- Maf Transcription Factors, Large/genetics
- Maf Transcription Factors, Large/metabolism
- Mice
- Mice, Knockout
- Nerve Tissue Proteins/genetics
- Nerve Tissue Proteins/metabolism
- Polymorphism, Genetic
- Protein Binding
- Receptors, Adrenergic, alpha-2/genetics
- Receptors, Adrenergic, alpha-2/metabolism
- Receptors, Nicotinic/genetics
- Receptors, Nicotinic/metabolism
- Signal Transduction
- Transcription, Genetic
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Affiliation(s)
- Elvira Ganic
- Stem Cell Center, Lund University, Klinikgatan 26, Lund 22184, Sweden; Lund University Diabetes Center, Lund University, Klinikgatan 26, Lund 22184, Sweden
| | - Tania Singh
- Stem Cell Center, Lund University, Klinikgatan 26, Lund 22184, Sweden; Lund University Diabetes Center, Lund University, Klinikgatan 26, Lund 22184, Sweden
| | - Cheng Luan
- Lund University Diabetes Center, Lund University, Klinikgatan 26, Lund 22184, Sweden
| | - João Fadista
- Lund University Diabetes Center, Lund University, Klinikgatan 26, Lund 22184, Sweden
| | - Jenny K Johansson
- Stem Cell Center, Lund University, Klinikgatan 26, Lund 22184, Sweden; Lund University Diabetes Center, Lund University, Klinikgatan 26, Lund 22184, Sweden
| | - Holly Ann Cyphert
- Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Hedvig Bennet
- Lund University Diabetes Center, Lund University, Klinikgatan 26, Lund 22184, Sweden
| | - Petter Storm
- Lund University Diabetes Center, Lund University, Klinikgatan 26, Lund 22184, Sweden
| | - Gaëlle Prost
- Stem Cell Center, Lund University, Klinikgatan 26, Lund 22184, Sweden
| | - Henrik Ahlenius
- Stem Cell Center, Lund University, Klinikgatan 26, Lund 22184, Sweden
| | - Erik Renström
- Lund University Diabetes Center, Lund University, Klinikgatan 26, Lund 22184, Sweden
| | - Roland Stein
- Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Leif Groop
- Lund University Diabetes Center, Lund University, Klinikgatan 26, Lund 22184, Sweden
| | - Malin Fex
- Lund University Diabetes Center, Lund University, Klinikgatan 26, Lund 22184, Sweden
| | - Isabella Artner
- Stem Cell Center, Lund University, Klinikgatan 26, Lund 22184, Sweden; Lund University Diabetes Center, Lund University, Klinikgatan 26, Lund 22184, Sweden.
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Han SL, Wan SL, Li QT, Xu DT, Zang HM, Chen NJ, Chen LY, Zhang WP, Luan C, Yang F, Xu ZW. Is vertebroplasty a risk factor for subsequent vertebral fracture, meta-analysis of published evidence? Osteoporos Int 2015; 26:113-22. [PMID: 25149856 DOI: 10.1007/s00198-014-2848-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 08/10/2014] [Indexed: 10/24/2022]
Abstract
UNLABELLED In our paper, we systemically retrieved the eligible study evaluating whether increased incidence of subsequent vertebral fracture is associated with vertebroplasty. Main effect sizes were vertebral fracture rates reported in terms of hazard ratio (HR) for time-to-event data or relative risk (RR) for dichotomous outcome. Our results do not support the hypothesis that vertebroplasty contributes to increased risk of subsequent vertebral fracture, neither adjacent nor total vertebral fracture. INTRODUCTION Vertebroplasty has been implicated in significant changes in vertebral strength, vertebral shape, and consequently increased risk for subsequent vertebral fracture, especially the adjacent level. Here, we further tested the hypothesis whether new-onset vertebral fracture is a natural result of osteoporosis or consequence of cement augmentation. METHODS Relevant literatures were retrieved using PubMed, Web of Knowledge, and Cochrane Central Register of Controlled Trials (CENTRAL), supplemented by a hand-search of the reference lists of selected articles. Eligible studies assessed whether increased morbidity of subsequent vertebral fracture is associated with vertebroplasty. Main effect sizes were vertebral fracture rates reported in terms of hazard ratio (HR) for time-to-event data or relative risk (RR) for dichotomous outcome. Random-effects model was used to account for clinical or methodological heterogeneity across studies. RESULTS Thirteen studies with a number of 2,551 individuals (1,631 in vertebroplasty group and 920 in control group) were suitable for this meta-analysis. In trials that reported adjacent vertebral fracture as time-to-event data (two trials, n = 328), we found a similar incidence of vertebral fracture in percutaneous vertebroplasty (PVP) group compared to conservative therapy (HR 0.60, 95% confidence interval 0.29 to 1.26; P = 0.18). In trials that reported overall vertebral fracture as time-to-event data (three trials, n = 704), vertebroplasty was associated with a slightly increased but non-significant risk for vertebral fracture (HR 1.14, 95% confidence interval 0.65 to 2.00; P = 0.65). The outcome was further confirmed in the secondary meta-analysis of studies that reported vertebral fracture as dichotomous data. Subgroup analysis according to study design revealed no difference either. CONCLUSIONS Our results do not support the hypothesis that vertebroplasty contributes to increased risk of subsequent vertebral fracture, neither adjacent nor total vertebral fracture. However, adequately designed randomized controlled trials are warranted to confirm the present findings.
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Affiliation(s)
- S L Han
- Department of Orthopaedics, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, 3 East Qingchun Road, Hangzhou, Zhejiang, 310016, China
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30
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Buda P, Reinbothe T, Nagaraj V, Mahdi T, Luan C, Tang Y, Axelsson AS, Li D, Rosengren AH, Renström E, Zhang E. Eukaryotic translation initiation factor 3 subunit e controls intracellular calcium homeostasis by regulation of cav1.2 surface expression. PLoS One 2013; 8:e64462. [PMID: 23737983 PMCID: PMC3667822 DOI: 10.1371/journal.pone.0064462] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2012] [Accepted: 04/15/2013] [Indexed: 01/09/2023] Open
Abstract
Inappropriate surface expression of voltage-gated Ca2+channels (CaV) in pancreatic ß-cells may contribute to the development of type 2 diabetes. First, failure to increase intracellular Ca2+ concentrations at the sites of exocytosis impedes insulin release. Furthermore, excessive Ca2+ influx may trigger cytotoxic effects. The regulation of surface expression of CaV channels in the pancreatic β-cells remains unknown. Here, we used real-time 3D confocal and TIRFM imaging, immunocytochemistry, cellular fractionation, immunoprecipitation and electrophysiology to study trafficking of L-type CaV1.2 channels upon β-cell stimulation. We found decreased surface expression of CaV1.2 and a corresponding reduction in L-type whole-cell Ca2+ currents in insulin-secreting INS-1 832/13 cells upon protracted (15–30 min) stimulation. This internalization occurs by clathrin-dependent endocytosis and could be prevented by microtubule or dynamin inhibitors. eIF3e (Eukaryotic translation initiation factor 3 subunit E) is part of the protein translation initiation complex, but its effect on translation are modest and effects in ion channel trafficking have been suggested. The factor interacted with CaV1.2 and regulated CaV1.2 traffic bidirectionally. eIF3e silencing impaired CaV1.2 internalization, which resulted in an increased intracellular Ca2+ load upon stimulation. These findings provide a mechanism for regulation of L-type CaV channel surface expression with consequences for β-cell calcium homeostasis, which will affect pancreatic β-cell function and insulin production.
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Affiliation(s)
- Pawel Buda
- Lund University Diabetes Center, Malmö, Sweden
| | | | | | - Taman Mahdi
- Lund University Diabetes Center, Malmö, Sweden
| | - Cheng Luan
- Lund University Diabetes Center, Malmö, Sweden
| | - Yunzhao Tang
- Lund University Diabetes Center, Malmö, Sweden
- Key Lab of Hormones and Development, Ministry of Health, and Metabolic Diseases Hospital, Tianjin Medical University, Tianjin, China
| | | | - Daiqing Li
- Key Lab of Hormones and Development, Ministry of Health, and Metabolic Diseases Hospital, Tianjin Medical University, Tianjin, China
| | | | - Erik Renström
- Lund University Diabetes Center, Malmö, Sweden
- * E-mail: (ER); (EZ)
| | - Enming Zhang
- Lund University Diabetes Center, Malmö, Sweden
- * E-mail: (ER); (EZ)
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31
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Han FF, Gao YH, Luan C, Xie YG, Liu YF, Wang YZ. Comparing bacterial membrane interactions and antimicrobial activity of porcine lactoferricin-derived peptides. J Dairy Sci 2013; 96:3471-87. [PMID: 23567049 DOI: 10.3168/jds.2012-6104] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Accepted: 02/11/2013] [Indexed: 11/19/2022]
Abstract
Antibiotic treatment for microbial infections is under scrutiny due to increasing resistance to conventional antibiotics, warranting discovery of new classes of antibiotic agents. Antimicrobial peptides are part of the innate defense system found in nearly all organisms and possess bactericidal mechanisms that make it more difficult for bacteria to develop resistance. Porcine lactoferricin (LFP-20) is an antimicrobial peptide located in the N terminus of lactoferrin (LF). To develop novel cell-selective antimicrobial peptides with improved antimicrobial specificity compared with LFP-20, analogs LF2A LF-2, LF-4, and LF-6 were substituted with Ala, Ser, or Trp residues at different positions in the molecule. Analogs displayed a 2- to 16-fold higher antimicrobial activity than LFP-20, but were hemolytic at 64 μg/mL. Additionally, LFP-20, LF2A, LF-2, and LF-4 exhibited lower cytotoxicity against human peripheral blood mononuclear cells than LF-6 at concentrations of 25 to 100 μg/mL. To better understand the antibacterial mechanisms of LFP-20 and its analogs we examined their effect on the cytoplasmic membrane of Escherichia coli. The LFP-20 was not effective in depolarizing cytoplasmic membranes, whereas the other 3 analogs gradually dissipated the membrane potential of E. coli. Membrane potential increased with minimal inhibitory concentrations changes, demonstrating a correlation between bactericidal activity and membrane depolarization. Analogs were more efficient than LFP-20 in displacing lipopolysaccharide-bound dansyl-polymyxin B, which also rapidly increased 1-N-phenyl-naphthylamine uptake and release of cytoplasmic β-galactosidase by increasing the permeability of the outer and inner membranes of E. coli. The 3 analogs caused an increased potential for calcein leakage from negatively charged lipid vesicles at high concentrations. Collectively, these results suggest that the first targets of LF-2, LF-4, and LF-6 in E. coli are cytoplasmic membranes. The 3 analogs exhibited lethal effects based on their abilities to disrupt membranes and permit transit of large intracellular components, such as calcein.
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Affiliation(s)
- F F Han
- Key Laboratory of Molecular Animal Nutrition, Ministry of Agriculture and Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Institute of Feed Science, Zhejiang University, Hangzhou 310058, China
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Liu M, Luan C. [The causes of people with physical disabilities aged 15-59 years in China]. Zhonghua Yu Fang Yi Xue Za Zhi 2009; 43:52-55. [PMID: 19534881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE To understand the present situation and the changes of causes of people with physical disabilities aged 15-59 years during the past 20 years in China. METHODS The data of causes of people with physical disabilities aged 15-59 collected from the results of The China National Sample Survey on Disability in 1987 and 2006 were analyzed and compared by using epidemiology method. RESULTS The main category of causes of people with physical disabilities aged 15-59 was disease, followed by injury factors, congenital diseases, eccyliosis and other factors. Their causing-disability rates were 0.720%, 0.595%, 0.224% and 0.186% respectively. Other traumas had the highest causing-disability rate of 0.296% in all causes. As compared with those in 1987, the causing-disability rates of disease factors, injury factors and congenital diseases and eccyliosis were increased obviously. The top five causes of disabilities aged 15-59 in China were other traumas, poliomyelitis, arthropathy, cerebrovascular diseases and industrial injury in 2006; while the other traumas, poliomyelitis, other known causes, unknown causes and vascular diseases were the top five in 1987. CONCLUSION Disease factors and injury factors should be the main causes of people with, physical disabilities aged at 15-59 years, and the other traumas should have the highest causing-disability rate, and the arthropathy and cerebrovascular diseases might become the main causes.
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Affiliation(s)
- Min Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing 100191, China.
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33
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Liu M, Luan C. [Research on the causes of physical disabilities among children aged 0 - 14, in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2008; 29:1083-1086. [PMID: 19173928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE To understand the present situation and the changes on causes of physical disabilities among children aged 0 - 14 years for the past 20 years in China. METHODS Data on children with physical disabilities aged 0 - 14 years from The China National Sample Survey on Disability in 2006 and 1987, were analyzed and compared. RESULTS The categories on the causes of children with physical disabilities aged 0 - 14 could be grouped as: congenital diseases and eccyliosis, with injury factors, other factors and disease factors. The specific causing-disability rates were 0.257%, 0.066%, 0.055% and 0.041% respectively. Cerebral palsy rated the highest specific causing-disability as 0.129% in all of the causes. Compared with 1987, the specific causing-disability rate of congenital diseases and eccyliosis had an obvious increase while the rates of disease factors and other factors showed a substantial decrease. The top five causes of children with physical disabilities aged 0 - 14 years in China were cerebral palsy, deformity, other kinds of traumas, congenital diseases and eccyliosis in 2006. Other causes, postpoliomyelitis muscular atrophy, deformity, other kinds of traumas and unknown causes were the top five in 1987. The age-specific top five causes were basically the same as the total top five causes of children aged 0 - 14 years with physical disabilities in 1987 and 2006, so as the same relationship between sex-specific top five causes and total top five. CONCLUSION Congenital diseases and eccyliosis were the main causes of 0 - 14 year-old children with physical disabilities, and cerebral palsy had the highest specific causing-disability rate while injury factors gradually became the major one.
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Affiliation(s)
- Min Liu
- Department of Epidemiology and Biostatistics, Peking University Health Science Center, Beijing 100191, China
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Luan C, Liu M. [Comparison of prevalence of physical disabilities in year 2006 and 1987, in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2008; 29:639-642. [PMID: 19031750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE To understand the present situation and the changes of epidemiological characteristics of people with physical disabilities during the past 20 years in China. METHODS Data regarding physical disability from China National Sample Survey on Disability in 1987 and 2006 were collected and analyzed as well as compared with different epidemiological methods. RESULTS In China, it was estimated that the overall prevalence of physical disabilities (PD) was 1.42% and there was an increase of 16.57 million people with PD for the past 20 years. In 1987, mild extremities took the largest proportion among all the people with PD, so as in 2006. The prevalence of PD was 3.76% in Tibet Autonomous Region which was also the highest in the country while Guangdong province had the lowest--0.64% in 1987. However, in 2006,Beijing had the highest prevalence of 3.20%, and the Zhejiang province the lowest--1.74%. PD prevalence increased in almost all China except Tibet Autonomous Region while Inner Mongolia Autonomous Region had the largest increase. The prevalence of PD showed an obvious increase in the rural areas exceeding the urban areas. The prevalence of PD in males was higher than in females. The trend that the increase of age-specific physical disability prevalence parallel to the increase of age,had not changed during the past 20 years. However the prevalence of different age groups with PD distinctly did change. The prevalence of PD in 0-14 of age only increased 0.10% while the prevalence in 65 year olds and over had increased 5.35% during the past 20 years. CONCLUSION During the past 20 years, the total number of people with physically disabled had increased in China. Factors as living in the North and Northeastern parts of the country or in the rural areas,being males and elderly, had become the high-risk populations.
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Affiliation(s)
- Cheng Luan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University Health Science Center, Beijing 100083, China
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35
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Luan C, Li Y, Wei B. [Study on fluorimetry of aluminum quaternary complex and analytical application]. Hua Xi Yi Ke Da Xue Xue Bao 2000; 31:415-8. [PMID: 12545850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
This study was conducted to seek an easy-to-do method for determination of aluminum in biological and food samples. The fluorescent reaction of aluminum forming quaternary complex with fluoride, Ferron and CTMAB in the buffer solution of ammonium acetate (at pH 6.0) was investigated. The conditions of the reaction and the pretreatment of samples were optimized. In addition, the aluminum contents of hair and food samples was detected. A good linear relationship between fluorescence intensity and aluminum concentrations from 0.002 microgram/ml to 0.20 microgram/ml was observed. The detection limit was 1.0 x 10(-3) micrograms/ml. The spiked recoveries were in the range of 88.66%-112.61% with relative standard deviation varying from 1.87% to 2.56%. This method has characters of good sensitivity, selectivity and the ability against interference, it can be of wide application.
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Affiliation(s)
- C Luan
- Department of Sanitary Technology, School of Public Health, WCUMS, Chengdu 610041
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36
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Wang L, Liu Z, Yang Q, Luan C. [Analysis and prevention of dislocation after total hip replacement]. Zhonghua Wai Ke Za Zhi 1999; 37:626-8. [PMID: 11829909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To analyse and prevent postoperative dislocation after total hip replacement (THR). METHODS Of 850 cases operated on by THR 15 (1.7%) had postoperative dislocation. Eleven were revision cases while the other 4 were operated on their primary procedures. RESULTS Postoperative dislocation after THR were found in 15 cases. Eleven cases had posterior dislocation by posterolateral approach after revision of THR. Anterior dislocation occurred in 2 cases who received lateral approach. Another two cases of dislocation were related to the design of prosthesis. Separation of polyethylene liner and metal shell in acetabular prosthesis was noted in the two cases. All the cases but 1 were reduced operatively. The cases with malpositioned prosthesis were revised operatively. Augmentation procedure was carried out to increase the strength of abductor. In one case, relocation of the great trochantor increased the strength of abductor. No redislocation was observed during follow-up. CONCLUSIONS Postoperative dislocation after THR are due to malpositioning of prosthesis, unbalanced bilateral soft tissues, especially the loosening of abductor. Evaluating carefully the development of the pelvis and the deviation of normal bone markers is important in addition to accurate insertion and installment of the prosthesis intraoperatively. Complete clearance of osteophytes and bone cements around the acetabulumis reqaired apart from the repairment of adjacent soft tissues. Double check of hip stability should be carried out before the closure of incision.
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Affiliation(s)
- L Wang
- Department of Orthopaedics, Ruijin Hospital, Shanghai Second Medical University. Shanghai Institute of Traumatology and Orthopaedics, Shanghai 200025
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Liu Y, Fu X, Han H, Cheng B, Luan C. Spectral structure for a class of one-dimensional three-tile quasilattices. Phys Rev B Condens Matter 1991; 43:13240-13245. [PMID: 9997149 DOI: 10.1103/physrevb.43.13240] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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