Maternal diet modulates placenta growth and gene expression in a mouse model of diabetic pregnancy.
Unfavorable maternal diet during pregnancy can predispose the offspring to diseases later in life, such as hypertension, metabolic syndrome, and obesity. However, the molecular basis for this phenomenon of "developmental programming" is poorly understood. We have recently shown that a diet nutritionally optimized for pregnancy can nevertheless be harmful in the context of diabetic pregnancy in the mouse, associated with a high incidence of neural tube defects and intrauterine growth restriction. We hypothesized that placental abnormalities may contribute to impaired fetal growth in these pregnancies, and therefore investigated the role of maternal diet in the placenta. LabDiet 5015 diet was associated with reduced placental growth, commencing at midgestation, when compared to pregnancies in which the diabetic dam was fed LabDiet 5001 maintenance chow. Furthermore, by quantitative RT-PCR we identify 34 genes whose expression in placenta at midgestation is modulated by diet, diabetes, or both, establishing biomarkers for gene-environment interactions in the placenta. These results implicate maternal diet as an important factor in pregnancy complications and suggest that the early phases of placenta development could be a critical time window for developmental origins of adult disease.
Department of Developmental Biology, Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, Louisiana, United States of America. Claudia.Kappen@pbrc.edu
Claudia
C
Kappen
Claudia
C
Kruger
Jacalyn
J
MacGowan
J Michael
JM
Salbaum
D000704:Analysis of Variance; D000821:Animal Feed / Q000032:analysis; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D016000:Cluster Analysis; D017931:DNA Primers; D003921:Diabetes Mellitus, Experimental / Q000503:physiopathology*; D004032:Diet; D005260:Female; D018507:Gene Expression Regulation, Developmental / Q000502:physiology*; D039382:Maternal Nutritional Physiological Phenomena; D051379:Mice; D010920:Placenta / Q000378:metabolism; D010929:Placentation; D011247:Pregnancy; D060888:Real-Time Polymerase Chain Reaction
D017931:DNA Primers