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Published on: November 10, 2017
Variants in STAT5B associate with serum TC and LDL-C levels
Jan-Wilhelm Kornfeld1, Aaron Isaacs, Veronique Vitart
1Ludwig Boltzmann Institute for Cancer Research, 1090 Vienna, Austria. jkornfel@uni-koeln.de
The Journal of Clinical Endocrinology and Metabolism
|July 15, 2011
Summary
Genetic variants in STAT5B influence cholesterol levels. This study links STAT5B gene variations to total cholesterol and LDL cholesterol, impacting lipid metabolism and potentially hyperlipidemia risk.
Area of Science:
- Genetics
- Metabolic pathways
- Molecular biology
Background:
- Genetic factors influencing serum lipid levels are not fully understood.
- The Growth Hormone/Signal Transducers and Activators of Transcription (STAT) pathway significantly impacts metabolism, including lipid regulation.
Purpose of the Study:
- To investigate the association between genetic variants in the STAT5B/STAT5A/STAT3 locus and serum lipid levels.
- To explore the role of STAT5B in regulating hepatic cholesterol homeostasis.
Main Methods:
- Analysis of 11 single-nucleotide polymorphisms (SNPs) in the STAT5B/STAT5A/STAT3 locus across six European populations (n=5162).
- Statistical association testing adjusted for covariates (age, sex, lifestyle factors, BMI).
- Functional studies in transgenic mice lacking hepatic STAT5A and STAT5B.
Main Results:
- STAT5B variants (rs8082391, rs8064638) showed significant association with total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C) levels.
- Minor alleles of these SNPs were enriched in hyperlipidemic individuals.
- Mice deficient in hepatic STAT5A/STAT5B exhibited reduced serum TC and hepatic cholesterol biosynthesis.
Conclusions:
- Genetic variations within STAT5B are linked to variations in TC and LDL-C levels in European populations.
- STAT5B plays a crucial role in regulating hepatic cholesterol homeostasis through transcriptional regulation.
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