The hormone-sensitive lipase (LIPE) gene located on chromosome 19q13.1-->13.2 is not duplicated on 19p13.3

Summary, in English

The existence of a DNA polymorphism at the hormone-sensitive lipase locus could be of great interest for genetic analysis of obesity and related disorders since hormone-sensitive lipase is the rate-limiting enzyme of adipose tissue lipolysis and therefore plays a key role in energy metabolism. The polymorphic dinucleotide repeat D19S120 was identified within a human genomic clone selected with a rat hormone-sensitive lipase cDNA. This marker was subsequently localized to the short arm of chromosome 19 (p13.3) whereas human hormone-sensitive lipase (LIPE) had been mapped to the long arm of chromosome 19 (q13.1-->13.2). A duplication of the hormone-sensitive lipase gene or the presence of a pseudogene could explain the discrepancy. Cosmids from the two regions were analyzed in Southern blot experiments. A human adipose tissue hormone-sensitive lipase full-length cDNA probe hybridized only to cosmids from the 19q13.1-->13.2 region whereas the D19S120 amplicon probe hybridized only to cosmids from the p13.3 region. These data show that the occurrence of gene duplication or the presence of a pseudogene on the short arm of chromosome 19 is very unlikely and that D19S120 is unrelated to the hormone-sensitive lipase gene.

• Author: H Laurell; J Grober; Lena Stenson; C Holm; H W Mohrenweiser; D Langin
• Department/s: Insulin Signal Transduction
• Publishing year: 1995
• Language: English
• Pages: 590-592
• Publication/Series: International Journal of Obesity
• Volume: 19
• Issue: 8
• Document type: Journal article
• Publisher: Nature Publishing Group
• Topic: Nutrition and Dietetics
• Status: Published
• Research group: Insulin Signal Transduction
• ISBN/ISSN/Other: ISSN: 1476-5497