Hyplip2, a new gene for combined hyperlipidemia and increased atherosclerosis

Arteriosclerosis, Thrombosis, and Vascular Biology
Xuping WangAldons J Lusis

Abstract

We previously reported the mapping of a quantitative trait locus (QTL) on chromosome 15 contributing to hyperlipidemia in a cross between inbred strains MRL/MpJ (MRL) and BALB/cJ (BALB). Using marker-assisted breeding, we constructed a congenic strain in which chromosome 15 interval from MRL is placed on the genetic background of BALB. The congenic allowed us to confirm the QTL result and to further characterize the properties and location of the underlying gene. On chow and high-fat (atherogenic) diets, the congenic mice exhibited higher levels of plasma triglycerides and cholesterol than BALB mice. In response to the atherogenic diet, the congenic mice but not BALB mice exhibited a dramatic approximately 30-fold increase in atherogenic lesions accompanied by approximately 2-fold decrease in high-density lipoprotein cholesterol levels. With respect to atherosclerotic lesions and some lipid parameters, this chromosome 15 gene, designated Hyplip2, exhibited dominant inheritance. Expression array analyses suggested that Hyplip2 may influence inflammatory and bile acid synthesis pathways. Finally, we demonstrated the usefulness of subcongenic strains to narrow the locus (50 Mbp) with the goal of positionally cloning Hyplip2. Our d...Continue Reading

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Citations

Aug 19, 2007·Mammalian Genome : Official Journal of the International Mammalian Genome Society·Charles R Farber, Juan F Medrano
Feb 18, 2010·Circulation. Cardiovascular Genetics·Peter S GargalovicAldons J Lusis
Jul 5, 2007·Journal of Lipid Research·Corina J A MoenPatrick C N Rensen
Jul 22, 2018·Arteriosclerosis, Thrombosis, and Vascular Biology·Ayca ErbilginAldons J Lusis
Jul 11, 2006·Arteriosclerosis, Thrombosis, and Vascular Biology·Yanqiao ZhangPeter A Edwards
Aug 1, 2013·Physiological Reviews·Paul N Hopkins
Jul 9, 2014·Mammalian Genome : Official Journal of the International Mammalian Genome Society·Sabrina H SpiezioRenée C LeBoeuf
Jul 20, 2019·Mammalian Genome : Official Journal of the International Mammalian Genome Society·Erica L ClinkenbeardBrett T Spear

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