Coordinated Regulatory Variation Associated with Gestational Hyperglycaemia Regulates Expression of the Novel Hexokinase HKDC1

Overview

Journal Nat Commun

Specialty Biology

Date 2015 Feb 5

PMID 25648650

Citations 60

Authors

Cong Guo

Anton E Ludvik

Michelle E Arlotto

M Geoffrey Hayes

Loren L Armstrong

Denise M Scholtens

Christopher D Brown

Christopher B Newgard

Thomas C Becker

Brian T Layden

William L Lowe

Timothy E Reddy

Affiliations

Soon will be listed here.

Abstract

Maternal glucose levels during pregnancy impact the developing fetus, affecting metabolic health both early and later on in life. Both genetic and environmental factors influence maternal metabolism, but little is known about the genetic mechanisms that alter glucose metabolism during pregnancy. Here, we report that haplotypes previously associated with gestational hyperglycaemia in the third trimester disrupt regulatory element activity and reduce expression of the nearby HKDC1 gene. We further find that experimentally reducing or increasing HKDC1 expression reduces or increases hexokinase activity, respectively, in multiple cellular models; in addition, purified HKDC1 protein has hexokinase activity in vitro. Together, these results suggest a novel mechanism of gestational glucose regulation in which the effects of genetic variants in multiple regulatory elements alter glucose homeostasis by coordinately reducing expression of the novel hexokinase HKDC1.

Citing Articles

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