The Metabolism Core is designed to conduct in vivo and physiological experiments in conscious mice for the purpose of detailed metabolic phenotyping of transgenic mouse models useful for understanding obesity, diabetes and its complications. The Core operates under the supervision of Drs. Jason Kim (Director), Dae Young Jung (co-Director), and Hwi Jin Ko (co-Director) who oversee day-to-day operation of the Core and interact with the users of the UMass MMPC. The principal functions of the Core are to perform the following experiments: 1) hyperinsulinemic-euglycemic clamp to assess organ-specific insulin action and glucose metabolism in conscious mice, 2) hyperglycemic clamp to assess in vivo pancreatic beta-cell function in conscious mice, 3) iv or ip glucose/insulin tolerance tests, 4) survival surgery of jugular vein cannulation for in vivo experiments, 5) implementation of osmotic pumps for chronic delivery of drugs or other agents, 6) application of special diet (e.g.. high-fat diet) to alter energy balance and induce obesity in mice. 7) acute lipid infusion, acute/chronic delivery of cytokines and phloridzin, and STZ injection to alter glucose homeostasis. 8) non-invasive measurement of energy expenditure, respiratory exchange ratio, physical activity, and food/water intake in conscious mice using metabolic cages. 9) non-invasive assessment of whole body, organ, and tissue biopsy composition of fat/lean/water mass in conscious mice using 1 H-MRS. 10) implementation of cage wheel for exercise study, and 12) biochemical analysis for intracellular metabolic flux measurement (glycolysis, glycogen synthesis). The Metabolism Core regulariy interacts with the Analytical Core for complementary, high-throughput analytical assays to measure hormones, cytokines and metabolites using serum samples obtained at the end of metabolic experiments. Also, the Metabolism Core interacts and with the Cardiovascular Complications Core for additional phenotyping associated with cardiovascular functions. The goal of the Metabolism Core is to use an array of elegant, non-invasive and in vivo experiments to obtain a robust set of metabolic data from individual mouse in order to provide mechanistic insights into the role of selected gene on obesity, insulin resistance, and diabetes.

Agency
National Institute of Health (NIH)
Institute
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Type
Resource-Related Research Projects--Cooperative Agreements (U24)
Project #
5U24DK093000-03
Application #
8517708
Study Section
Special Emphasis Panel (ZDK1-GRB-S)
Project Start
Project End
Budget Start
2013-06-01
Budget End
2014-05-31
Support Year
3
Fiscal Year
2013
Total Cost
$238,114
Indirect Cost
$93,364
Name
University of Massachusetts Medical School Worcester
Department
Type
DUNS #
603847393
City
Worcester
State
MA
Country
United States
Zip Code
01655
Kim, Mi-Sung; Krawczyk, Sarah A; Doridot, Ludivine et al. (2016) ChREBP regulates fructose-induced glucose production independently of insulin signaling. J Clin Invest 126:4372-4386
Roth Flach, Rachel J; Danai, Laura V; DiStefano, Marina T et al. (2016) Protein Kinase Mitogen-activated Protein Kinase Kinase Kinase Kinase 4 (MAP4K4) Promotes Obesity-induced Hyperinsulinemia. J Biol Chem 291:16221-30
Jara, Adam; Liu, Xingbo; Sim, Don et al. (2016) Cardiac-Specific Disruption of GH Receptor Alters Glucose Homeostasis While Maintaining Normal Cardiac Performance in Adult Male Mice. Endocrinology 157:1929-41
Friedline, Randall H; Ko, Hwi Jin; Jung, Dae Young et al. (2016) Genetic ablation of lymphocytes and cytokine signaling in nonobese diabetic mice prevents diet-induced obesity and insulin resistance. FASEB J 30:1328-38
Winnay, Jonathon N; Solheim, Marie H; Dirice, Ercument et al. (2016) PI3-kinase mutation linked to insulin and growth factor resistance in vivo. J Clin Invest 126:1401-12
Vernia, Santiago; Morel, Caroline; Madara, Joseph C et al. (2016) Excitatory transmission onto AgRP neurons is regulated by cJun NH2-terminal kinase 3 in response to metabolic stress. Elife 5:e10031
Min, So Yun; Kady, Jamie; Nam, Minwoo et al. (2016) Human 'brite/beige' adipocytes develop from capillary networks, and their implantation improves metabolic homeostasis in mice. Nat Med 22:312-8
Li, Zhu; Frey, Julie L; Wong, G William et al. (2016) Glucose Transporter-4 Facilitates Insulin-Stimulated Glucose Uptake in Osteoblasts. Endocrinology 157:4094-4103
Ejaz, Asma; Martinez-Guino, Laura; Goldfine, Allison B et al. (2016) Dietary Betaine Supplementation Increases Fgf21 Levels to Improve Glucose Homeostasis and Reduce Hepatic Lipid Accumulation in Mice. Diabetes 65:902-12
Ghanem, Simona S; Heinrich, Garrett; Lester, Sumona G et al. (2016) Increased Glucose-induced Secretion of Glucagon-like Peptide-1 in Mice Lacking the Carcinoembryonic Antigen-related Cell Adhesion Molecule 2 (CEACAM2). J Biol Chem 291:980-8

Showing the most recent 10 out of 39 publications