Genomic analysis of hepatic insulin resistance

Type II Diabetes mellitus is a genetically complex disease characterized by insulin resistance in peripheral tissues, which results in simultaneous hyperglycemia and hyperinsulinemia. Because of the prevalence of type II diabetes, many researchers are investigating the genetics of glucose homeostasis, however, traditional mapping techniques have not been successful in determining all of the genes that regulate glycemia. To complement these efforts, we used DNA microarrays to find differentially expressed genes and combinatorial siRNA screening to investigate the effects of hepatic gene transcription during periods of high and low glucose production. This strategy provides a new approach to studying the molecular mechanisms of disease pathogenesis. Our investigations focused on discovering new genes that influence hepatic metabolism and glucose production. Hepatocytes help maintain whole body glycemia by providing glucose and other substrates during non-feeding periods. DNA microarrays containing 17,000 unique gene probes were used to study hepatic gene transcription during normal, insulin resistant, and fasting states in C57/BL/6J mice. We analyzed this data set using a combination of statistical and multivariate techniques to determine 41 different, genes that are differentially expressed and highly discriminatory of the treatment groups.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Chemical Engineering.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2006

Author dc:creator

• Raab, R. Michael

Advisor dc:contributor.advisor

• Gregory Stephanopoulos.

• Chemical Engineering.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/33762
• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Identifier URI

http://dspace.mit.edu/handle/1721.1/33762

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/33762