Research Topics
Genomes and Genes
| C KahnSummaryAffiliation: Harvard University Country: USA Publications
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Publications
Lessons on conditional gene targeting in mouse adipose tissueKevin Y Lee
Corresponding author C Ronald Kahn
Diabetes 62:864-74. 2013..Thus, different "adipocyte-specific" Cre lines display different degrees of efficiency and specificity, illustrating important differences that must be taken into account in their use for studying adipose biology...
Glypican-4 enhances insulin signaling via interaction with the insulin receptor and serves as a novel adipokineSiegfried Ussar
Section on Integrative Physiology and Metabolism, Joslin Diabetes Center and Harvard Medical School, Boston, Massachusetts, USA
Diabetes 61:2289-98. 2012..In summary, glypican-4 is a novel circulating insulin sensitizing adipose-derived factor that, unlike other insulin sensitizers, acts directly on the insulin receptor to enhance signaling...
Tissue-specific insulin signaling, metabolic syndrome, and cardiovascular diseaseChristian Rask-Madsen
Joslin Diabetes Center, Harvard Medical School, One Joslin Place, Boston, MA 02215, USA
Arterioscler Thromb Vasc Biol 32:2052-9. 2012..Recent advances in our understanding of the complex pathophysiology of insulin's effects on vascular tissues offer new opportunities for preventing these cardiovascular disorders...
Intrinsic differences in adipocyte precursor cells from different white fat depotsYazmin Macotela
Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
Diabetes 61:1691-9. 2012..Regulation of these populations may provide a new target for the treatment and prevention of obesity and its metabolic complications...
Knockout mice challenge our concepts of glucose homeostasis and the pathogenesis of diabetesC Ronald Kahn
Joslin Diabetes Center, Harvard University Medical School, Boston, Massachusetts 02215, USA
Exp Diabesity Res 4:169-82. 2003....
Knockout mice challenge our concepts of glucose homeostasis and the pathogenesis of diabetes mellitusC R Kahn
Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
J Pediatr Endocrinol Metab 13:1377-84. 2000....
Medicine. Can we nip obesity in its vascular bud?C Ronald Kahn
Joslin Diabetes Center, One Joslin Place, Boston, MA 02215, USA
Science 322:542-3. 2008
The Gordon Wilson Lecture. Lessons about the control of glucose homeostasis and the pathogenesis of diabetes from knockout miceC Ronald Kahn
Joslin Diabetes Center, Harvard University Medical School, Boston, Massachusetts, USA
Trans Am Clin Climatol Assoc 114:125-48. 2003..The result of this work has led us to develop new hypotheses about the nature of the insulin action network...
Essential role of insulin and insulin-like growth factor 1 receptor signaling in cardiac development and functionPalle G Laustsen
Joslin Diabetes Center, Boston, MA 02215, USA
Mol Cell Biol 27:1649-64. 2007....
Essential role of insulin receptor substrate-2 in insulin stimulation of Glut4 translocation and glucose uptake in brown adipocytesM Fasshauer
Research Division, Joslin Diabetes Center, and the Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
J Biol Chem 275:25494-501. 2000..This occurs without effects in differentiation, total activation of Akt and its downstream effectors, but may be caused by alterations in compartmentalization of these downstream signals...
Development of a novel polygenic model of NIDDM in mice heterozygous for IR and IRS-1 null allelesJ C Bruning
Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
Cell 88:561-72. 1997....
A muscle-specific insulin receptor knockout exhibits features of the metabolic syndrome of NIDDM without altering glucose toleranceJ C Bruning
Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
Mol Cell 2:559-69. 1998..Thus, insulin resistance in muscle contributes to the altered fat metabolism associated with type 2 diabetes, but tissues other than muscle appear to be more involved in insulin-regulated glucose disposal than previously recognized...
Control of hepatic gluconeogenesis through the transcriptional coactivator PGC-1J C Yoon
Dana Farber Cancer Institute and Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA
Nature 413:131-8. 2001..These results implicate PGC-1 as a key modulator of hepatic gluconeogenesis and as a central target of the insulin-cAMP axis in liver...
Tissue-specific knockout of the insulin receptor in pancreatic beta cells creates an insulin secretory defect similar to that in type 2 diabetesR N Kulkarni
Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
Cell 96:329-39. 1999....
Exercise modulates postreceptor insulin signaling and glucose transport in muscle-specific insulin receptor knockout miceJ F Wojtaszewski
Research Division, Joslin Diabetes Center, Department of Medicine, Brigham and Women s Hospital and Harvard Medical School, Boston, Massachusetts 02215, USA
J Clin Invest 104:1257-64. 1999..The synergistic activation of glucose transport with exercise plus insulin is retained in MIRKO mice, suggesting a phenomenon mediated by nonmuscle cells or by downstream signaling events...
A model to explore the interaction between muscle insulin resistance and beta-cell dysfunction in the development of type 2 diabetesF Mauvais-Jarvis
Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
Diabetes 49:2126-34. 2000..These data suggest that muscle, either via changes in substrate availability or by acting as an endocrine tissue, communicates with and regulates insulin sensitivity in other tissues...
Differential regulation of insulin receptor substrates-1 and -2 (IRS-1 and IRS-2) and phosphatidylinositol 3-kinase isoforms in liver and muscle of the obese diabetic (ob/ob) mouseN J Kerouz
Research Division, Joslin Diabetes Center, and Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
J Clin Invest 100:3164-72. 1997....
Evidence for a circulating islet cell growth factor in insulin-resistant statesS N Flier
Research Division, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
Proc Natl Acad Sci U S A 98:7475-80. 2001..These data suggest the insulin resistance is associated with a circulating islet cell growth factor that is independent of glucose and obesity...
Alternative pathway of insulin signalling in mice with targeted disruption of the IRS-1 geneE Araki
Research Division, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215
Nature 372:186-90. 1994..Our results provide evidence for IRS-1-dependent and IRS-1-independent pathways of insulin/IGF-1 signalling and for the existence of an alternative substrate of these receptor kinases...
Hypoglycaemia, liver necrosis and perinatal death in mice lacking all isoforms of phosphoinositide 3-kinase p85 alphaD A Fruman
Division of Signal Transduction, Beth Israel Deaconess Medical Center Boston, Massachusetts, USA
Nat Genet 26:379-82. 2000..Our findings reveal that p55 alpha and/or p50 alpha are required for survival, but not for development of hypoglycaemia, in mice lacking p85 alpha...
Loss of insulin signaling in hepatocytes leads to severe insulin resistance and progressive hepatic dysfunctionM D Michael
Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
Mol Cell 6:87-97. 2000..Thus, insulin signaling in liver is critical in regulating glucose homeostasis and maintaining normal hepatic function...
Targeted disruption of the glucose transporter 4 selectively in muscle causes insulin resistance and glucose intoleranceA Zisman
Research Division, Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
Nat Med 6:924-8. 2000..These mice showed severe insulin resistance and glucose intolerance from an early age. Thus, GLUT4-mediated glucose transport in muscle is essential to the maintenance of normal glucose homeostasis...
Effects of insulin-sensitising agents in mice with hepatic insulin resistanceS E Cohen
Joslin Diabetes Center and Harvard Medical School, One Joslin Place, Boston, MA 02215, USA
Diabetologia 47:407-11. 2004....
Altered function of insulin receptor substrate-1-deficient mouse islets and cultured beta-cell linesR N Kulkarni
Division of Cellular and Molecular Physiology, Research Division, Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
J Clin Invest 104:R69-75. 1999..This article may have been published online in advance of the print edition. The date of publication is available from the JCI website, http://www.jci.org...
The branch point enzyme of the mevalonate pathway for protein prenylation is overexpressed in the ob/ob mouse and induced by adipogenesisD Vicent
Research Division, Joslin Diabetes Center, and Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
Mol Cell Biol 20:2158-66. 2000....
beta-cell-specific deletion of the Igf1 receptor leads to hyperinsulinemia and glucose intolerance but does not alter beta-cell massR N Kulkarni
Research Division, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, One Joslin Place, Boston Massachusetts 02215, USA
Nat Genet 31:111-5. 2002..Thus, Igf1r is not crucial for islet beta-cell development, but participates in control of differentiated function...
Insulin stimulates serine and tyrosine phosphorylation in the juxtamembrane region of the insulin receptorE P Feener
Joslin Diabetes Center, Department of Medicine, Brigham and Women s Hospital, Boston, Massachusetts
J Biol Chem 268:11256-64. 1993..Together with our previous studies, this report suggests that phosphorylation of Tyr960 may play an important role in signal transduction by the insulin receptor...
The insulin receptor--a critical link in glucose homeostasis and insulin actionM E Patti
Research Division, Joslin Diabetes Center, Boston, MA 02215, USA
J Basic Clin Physiol Pharmacol 9:89-109. 1998..Hopefully, these new techniques and new perspectives will bring us closer to understanding the pathophysiology of type 2 diabetes mellitus...
Activation of the hexosamine pathway by glucosamine in vivo induces insulin resistance of early postreceptor insulin signaling events in skeletal muscleM E Patti
Research Division, Joslin Diabetes Center, Boston, Massachusetts 02215, USA
Diabetes 48:1562-71. 1999....
Overexpression of Rad inhibits glucose uptake in cultured muscle and fat cellsJ S Moyers
Research Division, Joslin Diabetes Center, and Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
J Biol Chem 271:23111-6. 1996..These data indicate that Rad is a negative regulator of glucose uptake and that this effect may be due to a decrease in the intrinsic activity of the transporter molecules, rather than an effect on the translocation of Glut4...
Insulin-stimulated translocation of GLUT4 glucose transporters requires SNARE-complex proteinsB Cheatham
Research Division, Joslin Diabetes Center, Boston, MA 02215, USA
Proc Natl Acad Sci U S A 93:15169-73. 1996....
Insulin receptor substrate proteins create a link between the tyrosine phosphorylation cascade and the Ca2+-ATPases in muscle and heartP Algenstaedt
Research Division, Joslin Diabetes Center and Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA
J Biol Chem 272:23696-702. 1997....
An association between NIDDM and a GAA trinucleotide repeat polymorphism in the X25/frataxin (Friedreich's ataxia) geneM Ristow
Klinik II und Poliklinik für Innere Medizin, Universitat zu Koln, Cologne, Germany
Diabetes 47:851-4. 1998..Further studies are needed to elucidate the possible role of frataxin in the pathogenesis of NIDDM...
Alterations in skeletal muscle gene expression of ob/ob mice by mRNA differential displayD Vicent
Joslin Diabetes Center, and Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
Diabetes 47:1451-8. 1998....
Structure of the insulin receptor substrate IRS-1 defines a unique signal transduction proteinX J Sun
Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215
Nature 352:73-7. 1991..Thus IRS-1 may link the insulin receptor kinase and enzymes regulating cellular growth and metabolism...
Purification and partial sequence analysis of pp185, the major cellular substrate of the insulin receptor tyrosine kinaseP L Rothenberg
Research Division, Joslin Diabetes Center, Boston, Massachusetts
J Biol Chem 266:8302-11. 1991....
4PS/insulin receptor substrate (IRS)-2 is the alternative substrate of the insulin receptor in IRS-1-deficient miceM E Patti
Research Division, Joslin Diabetes Center, Boston, Massachusetts 02215, USA
J Biol Chem 270:24670-3. 1995..In IRS-1-deficient mice, 4PS/IRS-2 provides signal transduction to these two major pathways of insulin signaling...
Obesity associated with a mutation in a genetic regulator of adipocyte differentiationM Ristow
Joslin Diabetes Center and Harvard Medical School, Boston, MA 02215, USA
N Engl J Med 339:953-9. 1998..Peroxisome-proliferator-activated receptor gamma2 (PPARgamma2) is a transcription factor that has a key role in adipocyte differentiation, and therefore mutations of the gene for this factor might predispose people to obesity...
Human skeletal muscle insulin receptor substrate-1. Characterization of the cDNA, gene, and chromosomal localizationE Araki
Department of Medicine, Brigham and Women s Hospital, Boston, Massachusetts
Diabetes 42:1041-54. 1993..Thus, IRS-1 is widely expressed and highly conserved across species and tissues.(ABSTRACT TRUNCATED AT 250 WORDS)..
Insulin receptor substrate 1 binds two novel splice variants of the regulatory subunit of phosphatidylinositol 3-kinase in muscle and brainD A Antonetti
Research Division, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215, USA
Mol Cell Biol 16:2195-203. 1996....
Mutation of the insulin receptor at tyrosine 960 inhibits signal transmission but does not affect its tyrosine kinase activityM F White
Joslin Diabetes Center, Department of Medicine, Brigham and Women s Hospital, Boston, Massachusetts 02215
Cell 54:641-9. 1988....
Vanadate normalizes hyperglycemia and phosphoenolpyruvate carboxykinase mRNA levels in ob/ob miceS Ferber
Research Division, Joslin Diabetes Center, Boston, MA 02215
Metabolism 43:1346-54. 1994..In summary, hyperglycemia in the ob/ob mouse is characterized by decreased expression of PEPCK and increased expression of GAPDH mRNA.(ABSTRACT TRUNCATED AT 250 WORDS)..
Unbalanced expression of the different subunits of elongation factor 1 in diabetic skeletal muscleC Reynet
Research Division, Joslin Diabetes Center, and Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
Proc Natl Acad Sci U S A 98:3422-7. 2001..This unbalanced regulation of the expression of the different subunits of EF-1 may contribute to alterations not only in protein synthesis but also in other cellular events observed in the diabetic state...
Rad: a member of the Ras family overexpressed in muscle of type II diabetic humansC Reynet
Research Division, Joslin Diabetes Center, Boston, MA
Science 262:1441-4. 1993..Messenger ribonucleic acid of Rad was expressed primarily in skeletal and cardiac muscle and was increased an average of 8.6-fold in the muscle of Type II diabetics as compared to normal individuals...
Characterization of Rad, a new member of Ras/GTPase superfamily, and its regulation by a unique GTPase-activating protein (GAP)-like activityJ Zhu
Research Division, Joslin Diabetes Center, Boston, Massachusetts 02215
J Biol Chem 270:4805-12. 1995..Rad may also be phosphorylated on serine/threonine residues by PKA and other kinases, as well as regulated by its own GAP which is present in many tissues and cell types...
Frataxin activates mitochondrial energy conversion and oxidative phosphorylationM Ristow
Joslin Diabetes Center, Harvard Medical School, Research Division, Boston, MA 02215, USA
Proc Natl Acad Sci U S A 97:12239-43. 2000..Thus, frataxin appears to be a key activator of mitochondrial energy conversion and oxidative phosphorylation...
Interaction of the Ras-related protein associated with diabetes rad and the putative tumor metastasis suppressor NM23 provides a novel mechanism of GTPase regulationJ Zhu
Research Division, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, One Joslin Place, Boston, MA 02215, USA
Proc Natl Acad Sci U S A 96:14911-8. 1999..This interaction may play important roles in the effects of Rad on glucose metabolism and the effects of nm23 on tumor metastasis and developmental regulation...
Trinucleotide repeats at the rad locus. Allele distributions in NIDDM and mapping to a 3-cM region on chromosome 16qA Doria
Research Division, Joslin Diabetes Center, Boston, MA 02215
Diabetes 44:243-7. 1995..84 at recombination fractions of 0.024, 0.001, and 0.03, respectively). The high degree of heterozygosity of these markers will allow large-scale family studies to be performed to test the presence of linkage between rad and NIDDM...
The role of insulin and IGF-1 signaling in longevityM Katic
Joslin Diabetes Center and Department of Medicine Harvard Medical School, Boston, Massachusetts 02215, USA
Cell Mol Life Sci 62:320-43. 2005..These latter factors interact with each other, the former factors and histone deacetylases of the SIR family in a complex interaction to influence lifespan...
Effects of phosphorylation on function of the Rad GTPaseJ S Moyers
Research Division, Joslin Diabetes Center, and Department of Medicine, Harvard Medical School, One Joslin Place, Boston, MA 02215, USA
Biochem J 333:609-14. 1998..These findings suggest that the binding of Rad to calmodulin, as well as its ability to bind GTP, might be regulated by the activation of several serine kinases...
Rad and Rad-related GTPases interact with calmodulin and calmodulin-dependent protein kinase IIJ S Moyers
Research Division, Joslin Diabetes Center, and Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
J Biol Chem 272:11832-9. 1997..Thus, the Rad family of GTP-binding proteins possess unique characteristics of binding CaM and calmodulin-dependent protein kinase II, suggesting a role for Rad-like GTPases in calcium activation of serine/threonine kinase cascades...
Cloning of the mouse insulin receptor substrate-1 (IRS-1) gene and complete sequence of mouse IRS-1E Araki
Department of Medicine, Brigham and Women s Hospital, Boston, MA 02215
Biochim Biophys Acta 1221:353-6. 1994..The highly conserved nature of IRS-1 suggests the importance of these domains in the function of IRS-1 or its association with other proteins...
Rad, a novel Ras-related GTPase, interacts with skeletal muscle beta-tropomyosinJ Zhu
Research Division, Joslin Diabetes Center, Boston, Massachusetts, USA
J Biol Chem 271:768-73. 1996..These data suggest that Rad may be involved in skeletal muscle motor function and cytoskeletal organization...
Characterization and regulation of the mouse insulin receptor substrate gene promoterE Araki
Joslin Diabetes Center, Department of Medicine, Brigham and Women s Hospital, Harvard Medical School, Boston, Massachusetts 02215, USA
Mol Endocrinol 9:1367-79. 1995....
Effects of diet and genetic background on sterol regulatory element-binding protein-1c, stearoyl-CoA desaturase 1, and the development of the metabolic syndromeSudha B Biddinger
Research Division, Joslin Diabetes Center, and Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
Diabetes 54:1314-23. 2005..Thus, dietary fat and genetic background act through SREBP-1c and SCD1 to affect hepatic lipid metabolism contributing to the development of the metabolic syndrome...
Evidence for a role of developmental genes in the origin of obesity and body fat distributionStephane Gesta
Joslin Diabetes Center and Harvard Medical School, Boston, MA 02215, USA
Proc Natl Acad Sci U S A 103:6676-81. 2006....
Total insulin and IGF-I resistance in pancreatic beta cells causes overt diabetesKohjiro Ueki
Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
Nat Genet 38:583-8. 2006..We propose that therapeutic improvement of insulin and IGF-I signaling in beta cells might protect against type 2 diabetes...
Role of hepatic STAT3 in brain-insulin action on hepatic glucose productionHiroshi Inoue
Department of Clinical Molecular Medicine, Division of Diabetes and Digestive and Kidney Diseases, Kobe University Graduate School of Medicine, Kobe 650 0017, Japan
Cell Metab 3:267-75. 2006..These results thus indicate that IL-6-STAT3 signaling in the liver contributes to insulin action in the brain, leading to the suppression of hepatic glucose production...
Myeloid lineage cell-restricted insulin resistance protects apolipoproteinE-deficient mice against atherosclerosisJulia Baumgartl
Institute for Genetics, University of Cologne and Center of Molecular Medicine Cologne, D 50931 Cologne, Germany
Cell Metab 3:247-56. 2006....
Overexpression of Rad in muscle worsens diet-induced insulin resistance and glucose intolerance and lowers plasma triglyceride levelJacob Ilany
Research Division, Joslin Diabetes Center and Harvard Medical School, Boston, MA 02215, USA
Proc Natl Acad Sci U S A 103:4481-6. 2006..These results demonstrate a potential synergistic interaction between increased expression of Rad and high-fat diet in creation of insulin resistance and altered lipid metabolism present in type 2 diabetes...
Brain glucagon-like peptide-1 increases insulin secretion and muscle insulin resistance to favor hepatic glycogen storageClaude Knauf
UMR 5018, Universite Paul Sabatier, IFR31, Toulouse, France USA
J Clin Invest 115:3554-63. 2005..Our data show that during hyperglycemia, brain GLP-1 inhibited muscle glucose utilization and increased insulin secretion to favor hepatic glycogen stores, preparing efficiently for the next fasting state...
Increased P85alpha is a potent negative regulator of skeletal muscle insulin signaling and induces in vivo insulin resistance associated with growth hormone excessLinda A Barbour
Department of Medicine, University Colorado Health Sciences Center, Denver, 80262, USA
J Biol Chem 280:37489-94. 2005....
Loss of ARNT/HIF1beta mediates altered gene expression and pancreatic-islet dysfunction in human type 2 diabetesJenny E Gunton
Joslin Diabetes Center and Harvard Medical School, 1 Joslin Place, Boston, Massachusetts 02215, USA
Cell 122:337-49. 2005..Together, these data suggest an important role for decreased ARNT and altered gene expression in the impaired islet function of human type 2 diabetes...
Prediction of preadipocyte differentiation by gene expression reveals role of insulin receptor substrates and necdinYu Hua Tseng
Research Division, Joslin Diabetes Center, Children s Hospital, Harvard Medical School, Boston, MA 02215, USA
Nat Cell Biol 7:601-11. 2005..Together these define a key signalling network that is involved in brown preadipocyte determination...
Divergent regulation of hepatic glucose and lipid metabolism by phosphoinositide 3-kinase via Akt and PKClambda/zetaCullen M Taniguchi
Cellular and Molecular Physiology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA
Cell Metab 3:343-53. 2006....
Leptin suppresses stearoyl-CoA desaturase 1 by mechanisms independent of insulin and sterol regulatory element-binding protein-1cSudha B Biddinger
Research Division, Joslin Diabetes Center, One Joslin Pl, Boston, MA 02215, USA
Diabetes 55:2032-41. 2006..Thus, the effect of leptin on SCD1 in liver is independent of insulin and SREBP-1c, and leptin, rather than insulin, is the major regulator of hepatic MUFA synthesis in obesity-linked diabetes...
Beneficial effects of subcutaneous fat transplantation on metabolismThien T Tran
Joslin Diabetes Center and Harvard Medical School, Boston, MA 02215, USA
Cell Metab 7:410-20. 2008..These data suggest that SC fat is intrinsically different from VIS fat and produces substances that can act systemically to improve glucose metabolism...
Central insulin action regulates peripheral glucose and fat metabolism in miceLinda Koch
Department of Mouse Genetics and Metabolism, Institute for Genetics, University of Cologne, and Center of Molecular Medicine Cologne, Cologne, Germany
J Clin Invest 118:2132-47. 2008..These studies demonstrate that central insulin action plays an important role in regulating WAT mass and glucose metabolism via hepatic Stat3 activation...
Impaired sodium excretion and increased blood pressure in mice with targeted deletion of renal epithelial insulin receptorSwasti Tiwari
Department of Medicine, Georgetown University, Washington, DC 20057, USA
Proc Natl Acad Sci U S A 105:6469-74. 2008..These results illuminate a previously uncharacterized role for renal IR to reduce BP and facilitate sodium and water excretion, possibly via NO production...
Mitochondrial gene expression and increased oxidative metabolism: role in increased lifespan of fat-specific insulin receptor knock-out miceMasa Katic
Joslin Diabetes Center, One Joslin Place and Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
Aging Cell 6:827-39. 2007..Together, these data suggest that maintenance of mitochondrial activity and metabolic rates in adipose tissue may be important contributors to the increased lifespan of the FIRKO mouse...
Targeted deletion of AIF decreases mitochondrial oxidative phosphorylation and protects from obesity and diabetesJ Andrew Pospisilik
Institute of Molecular Biotechnology of the Austrian Academy of Science, Dr Bohrgasse 3, 1030, Vienna, Austria
Cell 131:476-91. 2007..These findings establish that tissue-specific as well as global OxPhos defects in mice can counteract the development of insulin resistance, diabetes, and obesity...
IRS-1 transgenic mice show increased epididymal fat mass and insulin resistanceYusuke Murata
Department of Metabolic Medicine, Faculty of Medical and Pharmaceutical Sciences, Kumamoto University, 1 1 1 Honjo, Kumamoto 860 8556, Japan
Biochem Biophys Res Commun 364:301-7. 2007..Our results suggest that excess IRS-1 expression may not provide a beneficial impact on glucose homeostasis in vivo...
Muscle-specific knockout of PKC-lambda impairs glucose transport and induces metabolic and diabetic syndromesRobert V Farese
James A Haley Veterans Medical Center, Tampa, Florida 33612, USA
J Clin Invest 117:2289-301. 2007..These findings are particularly relevant because humans who have obesity, impaired glucose tolerance, and T2DM reportedly have defective activation and/or diminished levels of muscle aPKC...
High circulating leptin receptors with normal leptin sensitivity in liver-specific insulin receptor knock-out (LIRKO) miceShmuel E Cohen
Joslin Diabetes Center, Boston, Massachusetts 02215, USA
J Biol Chem 282:23672-8. 2007..In this manner, insulin signaling in liver plays an important role in leptin homeostasis and fine modulation of leptin action...
Reduced expression of the NADPH oxidase NOX4 is a hallmark of adipocyte differentiationSarah Mouche
Department of Cellular Physiology and Metabolism, University of Geneva, Geneva, Switzerland
Biochim Biophys Acta 1773:1015-27. 2007..In conclusion, we reveal that decreased NOX4 mRNA content is a hallmark of adipocyte differentiation and that NOX4 expression measured in whole adipose tissue is not an unequivocal indicator of intact or impaired insulin action...
Insulin action in AgRP-expressing neurons is required for suppression of hepatic glucose productionA Christine Könner
Department of Mouse Genetics and Metabolism, Institute for Genetics, Center for Molecular Medicine, University of Cologne, D 50674 Cologne, Germany
Cell Metab 5:438-49. 2007..However, insulin action specifically in AgRP-expressing neurons does play a critical role in controlling hepatic glucose production and may provide a target for the treatment of insulin resistance in type 2 diabetes...
Protein-tyrosine phosphatase 1B deficiency reduces insulin resistance and the diabetic phenotype in mice with polygenic insulin resistanceBingzhong Xue
Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02215, USA
J Biol Chem 282:23829-40. 2007..Thus, even in the setting of high genetic risk for diabetes, reducing PTP1B is partially protective, further demonstrating its attractiveness as a target for prevention and treatment of type 2 diabetes...
The p85alpha regulatory subunit of phosphoinositide 3-kinase potentiates c-Jun N-terminal kinase-mediated insulin resistanceCullen M Taniguchi
Joslin Diabetes Center, One Joslin Place, Boston, MA 02215, USA
Mol Cell Biol 27:2830-40. 2007..Thus, p85alpha plays a dual role in regulating insulin sensitivity and may mediate cross talk between the PI3K and stress kinase pathways...
Skeletal muscle-selective knockout of LKB1 increases insulin sensitivity, improves glucose homeostasis, and decreases TRB3Ho Jin Koh
Research Division, Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
Mol Cell Biol 26:8217-27. 2006..LKB1-mediated TRB3 expression provides a novel link between LKB1 and Akt, critical kinases involved in both tumor genesis and cell metabolism...
Suppression of aging in mice by the hormone KlothoHiroshi Kurosu
Department of Pathology, University of Texas UT Southwestern Medical Center at Dallas, 5323 Harry Hines Bouleuvard, Dallas, TX 75390 9072, USA
Science 309:1829-33. 2005..Klotho protein may function as an anti-aging hormone in mammals...
Muscle-specific Pten deletion protects against insulin resistance and diabetesNadeeja Wijesekara
Programme in Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada M5G 2N9
Mol Cell Biol 25:1135-45. 2005..Muscle Pten may be a potential target for treatment or prevention of insulin resistance and diabetes...
Knockout of insulin and IGF-1 receptors on vascular endothelial cells protects against retinal neovascularizationTatsuya Kondo
Research Division, Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
J Clin Invest 111:1835-42. 2003..These data indicate that both insulin and IGF-1 signaling in endothelium play a role in retinal neovascularization through the expression of vascular mediators, with the effect of insulin being most important in this process...
Bi-directional regulation of brown fat adipogenesis by the insulin receptorAmelia J Entingh
Department of Cellular and Molecular Physiology, Joslin Diabetes Center, Harvard Medical School, One Joslin Place, Boston, Massachusetts 02215, USA
J Biol Chem 278:33377-83. 2003..Thus, differentiation of brown adipocytes requires a timed and regulated expression of IR, and either the absence or overabundance of insulin receptors in these cells dramatically inhibits differentiation...
Tissue-specific ablation of the GLUT4 glucose transporter or the insulin receptor challenges assumptions about insulin action and glucose homeostasisYasuhiko Minokoshi
Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
J Biol Chem 278:33609-12. 2003
Impact of genetic background on development of hyperinsulinemia and diabetes in insulin receptor/insulin receptor substrate-1 double heterozygous miceRohit N Kulkarni
Research Division, Joslin Diabetes Center, One Joslin Place, Boston, MA 02215, USA
Diabetes 52:1528-34. 2003....
GLUT4, AMP kinase, but not the insulin receptor, are required for hepatoportal glucose sensor-stimulated muscle glucose utilizationRemy Burcelin
Institute of Pharmacology and Toxicology, University of Lausanne, Lausanne, Switzerland
J Clin Invest 111:1555-62. 2003..These data demonstrate that the portal sensor induces glucose use and development of hypoglycemia independently of insulin action, but by a mechanism that requires activation of the AMPK and the presence of GLUT4...
The role of endothelial insulin signaling in the regulation of vascular tone and insulin resistanceDavid Vicent
Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
J Clin Invest 111:1373-80. 2003....
Insulin signaling is required for insulin's direct and indirect action on hepatic glucose productionSimon J Fisher
Research Division, Joslin Diabetes Center, Harvard Medical School, Boston Massachusetts 02215, USA
J Clin Invest 111:463-8. 2003....
Extended longevity in mice lacking the insulin receptor in adipose tissueMatthias Bluher
Joslin Diabetes Center and Department of Medicine, Harvard Medical School, One Joslin Place, Boston, MA, 02215 USA
Science 299:572-4. 2003..Thus, a reduction of fat mass without caloric restriction can be associated with increased longevity in mice, possibly through effects on insulin signaling...
Insulin-induced up-regulated uncoupling protein-1 expression is mediated by insulin receptor substrate 1 through the phosphatidylinositol 3-kinase/Akt signaling pathway in fetal brown adipocytesAngela M Valverde
Departamento de Bioquimica y Biologia Molecular, Centro Mixto Consejo Superior de Investigaciones Cientificas Universidad Complutense de Madrid, Facultad de Farmacia, Universidad Complutense, Spain
J Biol Chem 278:10221-31. 2003..These data provide strong evidence for an essential role of IRS-1 through the PI 3-kinase/Akt signaling pathway inducing UCP-1 gene expression by insulin...
Lipoatrophic diabetes in Irs1(-/-)/Irs3(-/-) double knockout micePalle G Laustsen
Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, Massachusetts 02215, USA
Genes Dev 16:3213-22. 2002..The results indicate that IRS-1 and IRS-3 play important complementary roles in adipogenesis and establish the Irs1(-/-)/Irs3(-/-) double knockout mouse as a novel model of lipoatrophic diabetes...
Adipose tissue selective insulin receptor knockout protects against obesity and obesity-related glucose intoleranceMatthias Bluher
Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
Dev Cell 3:25-38. 2002....
Knockout models are useful tools to dissect the pathophysiology and genetics of insulin resistanceFranck Mauvais-Jarvis
Department of Endocrinology and Diabetes, Saint Louis Hospital and University of Paris VII Medical School, France
Clin Endocrinol (Oxf) 57:1-9. 2002..The development of type 2 diabetes is linked to insulin resistance coupled with a failure of pancreatic beta-cells to compensate by adequate insulin secretion...
Atypical beta-adrenergic effects on insulin signaling and action in beta(3)-adrenoceptor-deficient brown adipocytesPetra Jost
Department of Internal Medicine I, , , Germany
Am J Physiol Endocrinol Metab 283:E146-53. 2002..Furthermore, it indicates insulin receptor-independent, but PI 3-kinase-dependent, potent negative effects of the novel beta(1)-adrenoceptor state on diverse biological end points of insulin action...
Insulin signaling coordinately regulates cardiac size, metabolism, and contractile protein isoform expressionDarrell D Belke
Department of Pharmacology and Therapeutics, University of Calgary, Calgary, Alberta, Canada
J Clin Invest 109:629-39. 2002..Insulin may also modulate cardiac myocyte metabolism through paracrine mechanisms by activating insulin receptors in other cell types within the heart...
Role of Foxa-2 in adipocyte metabolism and differentiationChristian Wolfrum
Laboratory of Metabolic Diseases, The Rockefeller University, New York, New York 10021, USA
J Clin Invest 112:345-56. 2003..Furthermore, adipocytes of these Foxa-2+/- mice exhibit defects in glucose uptake and metabolism. These data suggest that Foxa-2 plays an important role as a physiological regulator of adipocyte differentiation and metabolism...
Muscle-specific PPARgamma-deficient mice develop increased adiposity and insulin resistance but respond to thiazolidinedionesAndrew W Norris
Research Division, Joslin Diabetes Center, One Joslin Place, Boston, Massachusetts 02215, USA
J Clin Invest 112:608-18. 2003..The tissue crosstalk mediating these effects is perhaps due to altered lipid metabolism in muscle...
Genetic determinants of energy expenditure and insulin resistance in diet-induced obesity in miceKatrine Almind
Research Division, Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
Diabetes 53:3274-85. 2004..e., the "thrifty gene," is a dominant-acting genetic determinant of diet-induced obesity in mice and can be linked to a locus on chromosome 14, including genes linked to adipose development and insulin sensitivity...
Distinct pathways of insulin-regulated versus diabetes-regulated gene expression: an in vivo analysis in MIRKO miceVijay K Yechoor
Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
Proc Natl Acad Sci U S A 101:16525-30. 2004..These distinct pathways of direct and indirect regulation of gene expression provide insights into the complex mechanisms of transcriptional control in diabetes and areas of potential therapeutic targeting...
Loss of skeletal muscle HIF-1alpha results in altered exercise enduranceSteven D Mason
Molecular Biology Section, Division of Biology, School of Medicine, University of California, San Diego, USA
PLoS Biol 2:e288. 2004..Thus, these results demonstrate an important role for the HIF-1 pathway in the metabolic control of muscle function...
Central role of suppressors of cytokine signaling proteins in hepatic steatosis, insulin resistance, and the metabolic syndrome in the mouseKohjiro Ueki
Research Division, Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, MA 02215, USA
Proc Natl Acad Sci U S A 101:10422-7. 2004..Thus, SOCS proteins play an important role in pathogenesis of the metabolic syndrome by concordantly modulating insulin signaling and cytokine signaling...
Research Grants
- Developmental Genes and the Origin of FatC Ronald Kahn; Fiscal Year: 2010....
- PI 3 KINASE ISOFORMS AND INSULIN ACTIONC Kahn; Fiscal Year: 2003..Together these studies should provide important insights into the role of PI 3-kinase isoforms in insulin action and diabetes. ..
- GENE EXPRESSION IN DIABETES BY SUBTRACTIVE CLONINGC Kahn; Fiscal Year: 2003..In addition, 6 type 2 DM having low S1 and SG on fs-IVGTT will be compared with 6 offspring with high S1 and high SG, and 6 normoglycemic obese will be compared with 6 lean subjects, for differential expression in muscle and fat. ..
- PI 3-Kinase Isoforms and Insulin ActionC Kahn; Fiscal Year: 2006..abstract_text> ..
- PI 3-Kinase Isoforms in Insulin ActionC Ronald Kahn; Fiscal Year: 2010....
- Insulin Receptor Substrates and Insulin ActionC Ronald Kahn; Fiscal Year: 2010....
- Developmental Genes and the Origin of FatC Ronald Kahn; Fiscal Year: 2010....
- PI 3-Kinase Isoforms in Insulin ActionC Kahn; Fiscal Year: 2009....
- Developmental Genes and the Origin of FatC Kahn; Fiscal Year: 2009....
- PI 3-Kinase Isoforms in Insulin ActionC Kahn; Fiscal Year: 2007....
- Insulin Receptor Substrates and Insulin ActionC Kahn; Fiscal Year: 2007..Identify the chromosomal loci and the specific genes in these loci which modify insulin resistance in the double heterozygous mouse leading to marked differences in diabetic phenotype in C57B1 and 129Sv mice. ..
- INSULIN RECEPTOR STRUCTURE AND TURNOVERC Kahn; Fiscal Year: 2007..4) Analyze gene expression in tissues lacking functional insulin receptors to define differences in direct and indirect regulation by insulin and metabolic substrates in this class of insulin actions. ..
- Diabetes Genome Anatomy Project (DGAP)C Kahn; Fiscal Year: 2006..abstract_text> ..
- INSULIN RECEPTOR PHOSPHORYLATION AND INSULIN ACTIONC Kahn; Fiscal Year: 2002..Together these studies should provide important insights into the complex network of insulin signaling and its alternations in diabetes. ..
- CONFERENCE ON DIABETES MELLITUSC Kahn; Fiscal Year: 2002..Keystone conferences on diabetes have been held every 2-3 years, and have had increasing registration approaching 600 people (when combined with the obesity conference). ..
- CHANGES IN GENE EXPRESSION IN DIABETESC Kahn; Fiscal Year: 1999....
- GENE EXPRESSION IN DIABETES BY SUBTRACTIVE CLONINGC Kahn; Fiscal Year: 2000..abstract_text> ..
- CHANGES IN GENE EXPRESSION IN DIABETESC Kahn; Fiscal Year: 1993....
- INSULIN RECEPTOR PHOSPHORYLATION AND INSULIN ACTIONC Kahn; Fiscal Year: 1993..7. Disease and cell culture models of altered receptor kinase activity will be further studied to determine the exact mechanism responsible for the change...
