Abstract
Maturity onset diabetes of the young (MODY) is a heterogeneous subtype of type II diabetes mellitus. To date, five MODY genes have been identified. Mutations in the hepatocyte nuclear factor-1α (HNF-1α) gene are associated with MODY3. In the present work, we implemented the HNF-1α promoter region in the screening of MODY-suspect patients and identified seven variants not detected in control subjects. The family was available for the - 119delG variant, and segregration between MODY and the variant is observed. Most of these variants are located in highly conserved regions and may alter HNF-1α expression through binding alteration of nuclear factors or other mechanisms. We demonstrate by functional studies that the transcriptional activity of the -283A> C and -218T> C variant promoters were 30% and 70% of the wild type activity, respectively. These data suggest that HNF-1α promoter variants could be diabetogenic mutations, and emphasize that the accurate HNF-1α expression is important for the maintenance of normal pancreatic β cell function. (C) 2000 Wiley-Liss, Inc.
Original language | English (US) |
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Pages (from-to) | 173-180 |
Number of pages | 8 |
Journal | Human mutation |
Volume | 15 |
Issue number | 2 |
DOIs | |
State | Published - 2000 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Genetics
- Genetics(clinical)