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Deficiency of APPL1 in mice impairs glucose-stimulated insulin secretion through inhibition of pancreatic beta cell mitochondrial function

Identifieur interne : 000050 ( PascalFrancis/Corpus ); précédent : 000049; suivant : 000051

Deficiency of APPL1 in mice impairs glucose-stimulated insulin secretion through inhibition of pancreatic beta cell mitochondrial function

Auteurs : CHEN WANG ; XIAOWEN LI ; KAIDA MU ; LING LI ; SHIHONG WANG ; YUNXIA ZHU ; MINGLIANG ZHANG ; JIYOON RYU ; ZHIFANG XIE ; DONGYUN SHI ; Weiping J. Zhang ; Lily Q. Dong ; WEIPING JIA

Source :

RBID : Pascal:13-0281139

Descripteurs français

English descriptors

Abstract

Aims/hypothesis Adaptor protein, phosphotyrosine interaction, pleckstrin homology domain and leucine zipper containing 1 (APPL1) is an adapter protein that positively mediates adiponectin signalling. Deficiency of APPL1 in the target tissues of insulin induces insulin resistance. We therefore aimed, in the present study, to determine its role in regulating pancreatic beta cell function. Methods A hyperglycaemic clamp test was performed to determine insulin secretion in APPL1 knockout (KO) mice. Glucose- and adiponectin-induced insulin release was measured in islets from APPL1 KO mice or INS-1(832/13) cells with either APPL1 knockdown or overproduction. RT-PCR and western blotting were conducted to analyse gene expression and protein abundance. Oxygen consumption rate (OCR), ATP production and mitochondrial membrane potential were assayed to evaluate mitochondrial function. Results APPL1 is highly expressed in pancreatic islets, but its levels are decreased in mice fed a high-fat diet and db/db mice compared with controls. Deletion of the Appl1 gene leads to impairment of both the first and second phases of insulin secretion during hyperglycaemic clamp tests. In addition, glucose-stimulated insulin secretion (GSIS) is significantly decreased in islets from APPL1 KO mice. Conversely, overproduction of APPL1 leads to an increase in GSIS in beta cells. In addition, expression levels of several genes involved in insulin production, mitochondrial biogenesis and mitochondrial OCR, ATP production and mitochondrial membrane potential are reduced significantly in APPL1-knockdown beta cells. Moreover, suppression or overexproduction of APPL1 inhibits or stimulates adiponectin-potentiated GSIS in beta cells, respectively. Conclusions/interpretation Our study demonstrates the roles of APPL1 in regulating GSIS and mitochondrial function in pancreatic beta cells, which implicates APPL1 as a therapeutic target in the treatment of type 2 diabetes.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A08 01  1  ENG  @1 Deficiency of APPL1 in mice impairs glucose-stimulated insulin secretion through inhibition of pancreatic beta cell mitochondrial function
A11 01  1    @1 CHEN WANG
A11 02  1    @1 XIAOWEN LI
A11 03  1    @1 KAIDA MU
A11 04  1    @1 LING LI
A11 05  1    @1 SHIHONG WANG
A11 06  1    @1 YUNXIA ZHU
A11 07  1    @1 MINGLIANG ZHANG
A11 08  1    @1 JIYOON RYU
A11 09  1    @1 ZHIFANG XIE
A11 10  1    @1 DONGYUN SHI
A11 11  1    @1 ZHANG (Weiping J.)
A11 12  1    @1 DONG (Lily Q.)
A11 13  1    @1 WEIPING JIA
A14 01      @1 Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road @2 Shanghai 200233 @3 CHN @Z 1 aut. @Z 2 aut. @Z 3 aut. @Z 4 aut. @Z 5 aut. @Z 6 aut. @Z 7 aut.
A14 02      @1 Diabetes Institute, Shanghai Jiao Tong University @2 Shanghai @3 CHN @Z 1 aut. @Z 2 aut. @Z 3 aut. @Z 4 aut. @Z 5 aut. @Z 6 aut. @Z 7 aut. @Z 13 aut.
A14 03      @1 Shanghai Key Laboratory of Diabetes Mellitus @2 Shanghai @3 CHN @Z 1 aut. @Z 2 aut. @Z 3 aut. @Z 4 aut. @Z 5 aut. @Z 6 aut. @Z 7 aut. @Z 13 aut.
A14 04      @1 Department of Cellular and Structural Biology, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive @2 San Antonio, TX 78229-3900 @3 USA @Z 8 aut. @Z 12 aut.
A14 05      @1 Department of Pathophysiology, Second Military Medical University @2 Shanghai @3 CHN @Z 9 aut. @Z 11 aut.
A14 06      @1 Department of Biochemistry and Molecular Biology, Shanghai Medical College of Fudan University @2 Shanghai @3 CHN @Z 10 aut.
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A44       @0 0000 @1 © 2013 INIST-CNRS. All rights reserved.
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A47 01  1    @0 13-0281139
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C01 01    ENG  @0 Aims/hypothesis Adaptor protein, phosphotyrosine interaction, pleckstrin homology domain and leucine zipper containing 1 (APPL1) is an adapter protein that positively mediates adiponectin signalling. Deficiency of APPL1 in the target tissues of insulin induces insulin resistance. We therefore aimed, in the present study, to determine its role in regulating pancreatic beta cell function. Methods A hyperglycaemic clamp test was performed to determine insulin secretion in APPL1 knockout (KO) mice. Glucose- and adiponectin-induced insulin release was measured in islets from APPL1 KO mice or INS-1(832/13) cells with either APPL1 knockdown or overproduction. RT-PCR and western blotting were conducted to analyse gene expression and protein abundance. Oxygen consumption rate (OCR), ATP production and mitochondrial membrane potential were assayed to evaluate mitochondrial function. Results APPL1 is highly expressed in pancreatic islets, but its levels are decreased in mice fed a high-fat diet and db/db mice compared with controls. Deletion of the Appl1 gene leads to impairment of both the first and second phases of insulin secretion during hyperglycaemic clamp tests. In addition, glucose-stimulated insulin secretion (GSIS) is significantly decreased in islets from APPL1 KO mice. Conversely, overproduction of APPL1 leads to an increase in GSIS in beta cells. In addition, expression levels of several genes involved in insulin production, mitochondrial biogenesis and mitochondrial OCR, ATP production and mitochondrial membrane potential are reduced significantly in APPL1-knockdown beta cells. Moreover, suppression or overexproduction of APPL1 inhibits or stimulates adiponectin-potentiated GSIS in beta cells, respectively. Conclusions/interpretation Our study demonstrates the roles of APPL1 in regulating GSIS and mitochondrial function in pancreatic beta cells, which implicates APPL1 as a therapeutic target in the treatment of type 2 diabetes.
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Format Inist (serveur)

NO : PASCAL 13-0281139 INIST
ET : Deficiency of APPL1 in mice impairs glucose-stimulated insulin secretion through inhibition of pancreatic beta cell mitochondrial function
AU : CHEN WANG; XIAOWEN LI; KAIDA MU; LING LI; SHIHONG WANG; YUNXIA ZHU; MINGLIANG ZHANG; JIYOON RYU; ZHIFANG XIE; DONGYUN SHI; ZHANG (Weiping J.); DONG (Lily Q.); WEIPING JIA
AF : Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road/Shanghai 200233/Chine (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 6 aut., 7 aut.); Diabetes Institute, Shanghai Jiao Tong University/Shanghai/Chine (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 6 aut., 7 aut., 13 aut.); Shanghai Key Laboratory of Diabetes Mellitus/Shanghai/Chine (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 6 aut., 7 aut., 13 aut.); Department of Cellular and Structural Biology, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive/San Antonio, TX 78229-3900/Etats-Unis (8 aut., 12 aut.); Department of Pathophysiology, Second Military Medical University/Shanghai/Chine (9 aut., 11 aut.); Department of Biochemistry and Molecular Biology, Shanghai Medical College of Fudan University/Shanghai/Chine (10 aut.)
DT : Publication en série; Niveau analytique
SO : Diabetologia : (Berlin); ISSN 0012-186X; Allemagne; Da. 2013; Vol. 56; No. 9; Pp. 1999-2009; Bibl. 48 ref.
LA : Anglais
EA : Aims/hypothesis Adaptor protein, phosphotyrosine interaction, pleckstrin homology domain and leucine zipper containing 1 (APPL1) is an adapter protein that positively mediates adiponectin signalling. Deficiency of APPL1 in the target tissues of insulin induces insulin resistance. We therefore aimed, in the present study, to determine its role in regulating pancreatic beta cell function. Methods A hyperglycaemic clamp test was performed to determine insulin secretion in APPL1 knockout (KO) mice. Glucose- and adiponectin-induced insulin release was measured in islets from APPL1 KO mice or INS-1(832/13) cells with either APPL1 knockdown or overproduction. RT-PCR and western blotting were conducted to analyse gene expression and protein abundance. Oxygen consumption rate (OCR), ATP production and mitochondrial membrane potential were assayed to evaluate mitochondrial function. Results APPL1 is highly expressed in pancreatic islets, but its levels are decreased in mice fed a high-fat diet and db/db mice compared with controls. Deletion of the Appl1 gene leads to impairment of both the first and second phases of insulin secretion during hyperglycaemic clamp tests. In addition, glucose-stimulated insulin secretion (GSIS) is significantly decreased in islets from APPL1 KO mice. Conversely, overproduction of APPL1 leads to an increase in GSIS in beta cells. In addition, expression levels of several genes involved in insulin production, mitochondrial biogenesis and mitochondrial OCR, ATP production and mitochondrial membrane potential are reduced significantly in APPL1-knockdown beta cells. Moreover, suppression or overexproduction of APPL1 inhibits or stimulates adiponectin-potentiated GSIS in beta cells, respectively. Conclusions/interpretation Our study demonstrates the roles of APPL1 in regulating GSIS and mitochondrial function in pancreatic beta cells, which implicates APPL1 as a therapeutic target in the treatment of type 2 diabetes.
CC : 002B21E01A
FD : Déficit; Glucose; Insuline; Sécrétion; Animal; Inhibition; Cellule β; Diabète; Mitochondrie; Adiponectine; Souris
FG : Pancréas endocrine; Hormone pancréatique; Ilot Langerhans; Adipokine; Endocrinopathie; Rodentia; Mammalia; Vertebrata
ED : Deficiency; Glucose; Insulin; Secretion; Animal; Inhibition; β Cell; Diabetes mellitus; Mitochondria; Adiponectin; Mouse
EG : Endocrine pancreas; Pancreatic hormone; Langerhans islet; Adipokine; Endocrinopathy; Rodentia; Mammalia; Vertebrata
SD : Déficiencia; Glucosa; Insulina; Secreción; Animal; Inhibición; Célula β; Diabetes; Mitocondria; Adiponectina; Ratón
LO : INIST-13012.354000503689440190
ID : 13-0281139

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Pascal:13-0281139

Le document en format XML

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<div type="abstract" xml:lang="en">Aims/hypothesis Adaptor protein, phosphotyrosine interaction, pleckstrin homology domain and leucine zipper containing 1 (APPL1) is an adapter protein that positively mediates adiponectin signalling. Deficiency of APPL1 in the target tissues of insulin induces insulin resistance. We therefore aimed, in the present study, to determine its role in regulating pancreatic beta cell function. Methods A hyperglycaemic clamp test was performed to determine insulin secretion in APPL1 knockout (KO) mice. Glucose- and adiponectin-induced insulin release was measured in islets from APPL1 KO mice or INS-1(832/13) cells with either APPL1 knockdown or overproduction. RT-PCR and western blotting were conducted to analyse gene expression and protein abundance. Oxygen consumption rate (OCR), ATP production and mitochondrial membrane potential were assayed to evaluate mitochondrial function. Results APPL1 is highly expressed in pancreatic islets, but its levels are decreased in mice fed a high-fat diet and db/db mice compared with controls. Deletion of the Appl1 gene leads to impairment of both the first and second phases of insulin secretion during hyperglycaemic clamp tests. In addition, glucose-stimulated insulin secretion (GSIS) is significantly decreased in islets from APPL1 KO mice. Conversely, overproduction of APPL1 leads to an increase in GSIS in beta cells. In addition, expression levels of several genes involved in insulin production, mitochondrial biogenesis and mitochondrial OCR, ATP production and mitochondrial membrane potential are reduced significantly in APPL1-knockdown beta cells. Moreover, suppression or overexproduction of APPL1 inhibits or stimulates adiponectin-potentiated GSIS in beta cells, respectively. Conclusions/interpretation Our study demonstrates the roles of APPL1 in regulating GSIS and mitochondrial function in pancreatic beta cells, which implicates APPL1 as a therapeutic target in the treatment of type 2 diabetes.</div>
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<s1>Deficiency of APPL1 in mice impairs glucose-stimulated insulin secretion through inhibition of pancreatic beta cell mitochondrial function</s1>
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<s1>JIYOON RYU</s1>
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<s1>ZHIFANG XIE</s1>
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<s1>DONGYUN SHI</s1>
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<s1>ZHANG (Weiping J.)</s1>
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<s1>WEIPING JIA</s1>
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<s1>Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road</s1>
<s2>Shanghai 200233</s2>
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<sZ>1 aut.</sZ>
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<s1>Diabetes Institute, Shanghai Jiao Tong University</s1>
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<s1>Shanghai Key Laboratory of Diabetes Mellitus</s1>
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<sZ>2 aut.</sZ>
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<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
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<s1>Department of Cellular and Structural Biology, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive</s1>
<s2>San Antonio, TX 78229-3900</s2>
<s3>USA</s3>
<sZ>8 aut.</sZ>
<sZ>12 aut.</sZ>
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<s1>Department of Pathophysiology, Second Military Medical University</s1>
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<s3>CHN</s3>
<sZ>9 aut.</sZ>
<sZ>11 aut.</sZ>
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<s1>Department of Biochemistry and Molecular Biology, Shanghai Medical College of Fudan University</s1>
<s2>Shanghai</s2>
<s3>CHN</s3>
<sZ>10 aut.</sZ>
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<s1>1999-2009</s1>
</fA20>
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<s0>ENG</s0>
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<s0>Aims/hypothesis Adaptor protein, phosphotyrosine interaction, pleckstrin homology domain and leucine zipper containing 1 (APPL1) is an adapter protein that positively mediates adiponectin signalling. Deficiency of APPL1 in the target tissues of insulin induces insulin resistance. We therefore aimed, in the present study, to determine its role in regulating pancreatic beta cell function. Methods A hyperglycaemic clamp test was performed to determine insulin secretion in APPL1 knockout (KO) mice. Glucose- and adiponectin-induced insulin release was measured in islets from APPL1 KO mice or INS-1(832/13) cells with either APPL1 knockdown or overproduction. RT-PCR and western blotting were conducted to analyse gene expression and protein abundance. Oxygen consumption rate (OCR), ATP production and mitochondrial membrane potential were assayed to evaluate mitochondrial function. Results APPL1 is highly expressed in pancreatic islets, but its levels are decreased in mice fed a high-fat diet and db/db mice compared with controls. Deletion of the Appl1 gene leads to impairment of both the first and second phases of insulin secretion during hyperglycaemic clamp tests. In addition, glucose-stimulated insulin secretion (GSIS) is significantly decreased in islets from APPL1 KO mice. Conversely, overproduction of APPL1 leads to an increase in GSIS in beta cells. In addition, expression levels of several genes involved in insulin production, mitochondrial biogenesis and mitochondrial OCR, ATP production and mitochondrial membrane potential are reduced significantly in APPL1-knockdown beta cells. Moreover, suppression or overexproduction of APPL1 inhibits or stimulates adiponectin-potentiated GSIS in beta cells, respectively. Conclusions/interpretation Our study demonstrates the roles of APPL1 in regulating GSIS and mitochondrial function in pancreatic beta cells, which implicates APPL1 as a therapeutic target in the treatment of type 2 diabetes.</s0>
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<NO>PASCAL 13-0281139 INIST</NO>
<ET>Deficiency of APPL1 in mice impairs glucose-stimulated insulin secretion through inhibition of pancreatic beta cell mitochondrial function</ET>
<AU>CHEN WANG; XIAOWEN LI; KAIDA MU; LING LI; SHIHONG WANG; YUNXIA ZHU; MINGLIANG ZHANG; JIYOON RYU; ZHIFANG XIE; DONGYUN SHI; ZHANG (Weiping J.); DONG (Lily Q.); WEIPING JIA</AU>
<AF>Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Road/Shanghai 200233/Chine (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 6 aut., 7 aut.); Diabetes Institute, Shanghai Jiao Tong University/Shanghai/Chine (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 6 aut., 7 aut., 13 aut.); Shanghai Key Laboratory of Diabetes Mellitus/Shanghai/Chine (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 6 aut., 7 aut., 13 aut.); Department of Cellular and Structural Biology, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive/San Antonio, TX 78229-3900/Etats-Unis (8 aut., 12 aut.); Department of Pathophysiology, Second Military Medical University/Shanghai/Chine (9 aut., 11 aut.); Department of Biochemistry and Molecular Biology, Shanghai Medical College of Fudan University/Shanghai/Chine (10 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Diabetologia : (Berlin); ISSN 0012-186X; Allemagne; Da. 2013; Vol. 56; No. 9; Pp. 1999-2009; Bibl. 48 ref.</SO>
<LA>Anglais</LA>
<EA>Aims/hypothesis Adaptor protein, phosphotyrosine interaction, pleckstrin homology domain and leucine zipper containing 1 (APPL1) is an adapter protein that positively mediates adiponectin signalling. Deficiency of APPL1 in the target tissues of insulin induces insulin resistance. We therefore aimed, in the present study, to determine its role in regulating pancreatic beta cell function. Methods A hyperglycaemic clamp test was performed to determine insulin secretion in APPL1 knockout (KO) mice. Glucose- and adiponectin-induced insulin release was measured in islets from APPL1 KO mice or INS-1(832/13) cells with either APPL1 knockdown or overproduction. RT-PCR and western blotting were conducted to analyse gene expression and protein abundance. Oxygen consumption rate (OCR), ATP production and mitochondrial membrane potential were assayed to evaluate mitochondrial function. Results APPL1 is highly expressed in pancreatic islets, but its levels are decreased in mice fed a high-fat diet and db/db mice compared with controls. Deletion of the Appl1 gene leads to impairment of both the first and second phases of insulin secretion during hyperglycaemic clamp tests. In addition, glucose-stimulated insulin secretion (GSIS) is significantly decreased in islets from APPL1 KO mice. Conversely, overproduction of APPL1 leads to an increase in GSIS in beta cells. In addition, expression levels of several genes involved in insulin production, mitochondrial biogenesis and mitochondrial OCR, ATP production and mitochondrial membrane potential are reduced significantly in APPL1-knockdown beta cells. Moreover, suppression or overexproduction of APPL1 inhibits or stimulates adiponectin-potentiated GSIS in beta cells, respectively. Conclusions/interpretation Our study demonstrates the roles of APPL1 in regulating GSIS and mitochondrial function in pancreatic beta cells, which implicates APPL1 as a therapeutic target in the treatment of type 2 diabetes.</EA>
<CC>002B21E01A</CC>
<FD>Déficit; Glucose; Insuline; Sécrétion; Animal; Inhibition; Cellule β; Diabète; Mitochondrie; Adiponectine; Souris</FD>
<FG>Pancréas endocrine; Hormone pancréatique; Ilot Langerhans; Adipokine; Endocrinopathie; Rodentia; Mammalia; Vertebrata</FG>
<ED>Deficiency; Glucose; Insulin; Secretion; Animal; Inhibition; β Cell; Diabetes mellitus; Mitochondria; Adiponectin; Mouse</ED>
<EG>Endocrine pancreas; Pancreatic hormone; Langerhans islet; Adipokine; Endocrinopathy; Rodentia; Mammalia; Vertebrata</EG>
<SD>Déficiencia; Glucosa; Insulina; Secreción; Animal; Inhibición; Célula β; Diabetes; Mitocondria; Adiponectina; Ratón</SD>
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