Abstract
Abstract: The mechanisms by which maternal protein deficiency programs insulin action in the offspring are poorly understood. The interpretation of transcriptomics is complicated by homeostatic adaptations, for example, changes in amino acid metabolism, which are potentially unrelated to the programming mechanism. The fatty acid composition of the maternal diet modulates the programming of insulin action, offering a possible strategy to circumvent these complications. Fetal livers harvested on d21 of gestation from pregnant rats fed high-protein (18 % w/w) and low-protein (9 % w/w) diets prepared with either corn or soya oil were screened with rat genome microarrays. Although a low-protein maternal diet altered the abundance of more than one hundred mRNAs in the fetal liver, only 40 were changed by the fatty acid composition of the diet (P < 0.05). One of these mRNAs was identified as lipocalin-2 (Lcn2). This pattern of differential expression was confirmed by qRT-PCR. The expression of Lcn2 was decreased by low-protein diets when the diet contained soya oil, whereas the effect of protein was much smaller in the group fed diets prepared with corn oil. The decrease in Lcn2 expression produced by soya oil persisted into adult life. Levels of the Lcn2 protein were closely correlated to the mRNA abundance. The results suggest a possible involvement of Lcn2 in the programming of hepatic function.
| Original language | English |
|---|---|
| Article number | 380 |
| Journal | Genes & Nutrition |
| Volume | 9 |
| Issue number | 1 |
| Early online date | 3 Jan 2014 |
| DOIs | |
| Publication status | Published - Jan 2014 |
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Keywords
- Fetal origins of disease
- Hepatic development
- Metabolism
- Programming
ASJC Scopus subject areas
- Endocrinology, Diabetes and Metabolism
- Genetics
Cite this
Lipocalin-2 (Lcn2) expression is mediated by maternal nutrition during the development of the fetal liver. / Rees, William D.; Hay, Susan M.
In: Genes & Nutrition, Vol. 9, No. 1, 380, 01.2014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Lipocalin-2 (Lcn2) expression is mediated by maternal nutrition during the development of the fetal liver
AU - Rees, William D.
AU - Hay, Susan M.
N1 - Date of Acceptance: 7/12/2013 Acknowledgments This work was supported by the Scottish Government Rural and Environment Research and Analysis Directorate (RERAD) as part of the core funding to the Rowett Research Institute and by the European Union sixth Framework programme EARNEST (CT-2005-007036). Affymetrix arrays were obtained through the NuGO array pipeline (European Union sixth Framework programme FP6-506360). We would like to thank Dr Claus-Dieter Mayer (Biomathematics and Statistics, Scotland) for his help with the analysis of the microarray data.
PY - 2014/1
Y1 - 2014/1
N2 - Abstract: The mechanisms by which maternal protein deficiency programs insulin action in the offspring are poorly understood. The interpretation of transcriptomics is complicated by homeostatic adaptations, for example, changes in amino acid metabolism, which are potentially unrelated to the programming mechanism. The fatty acid composition of the maternal diet modulates the programming of insulin action, offering a possible strategy to circumvent these complications. Fetal livers harvested on d21 of gestation from pregnant rats fed high-protein (18 % w/w) and low-protein (9 % w/w) diets prepared with either corn or soya oil were screened with rat genome microarrays. Although a low-protein maternal diet altered the abundance of more than one hundred mRNAs in the fetal liver, only 40 were changed by the fatty acid composition of the diet (P < 0.05). One of these mRNAs was identified as lipocalin-2 (Lcn2). This pattern of differential expression was confirmed by qRT-PCR. The expression of Lcn2 was decreased by low-protein diets when the diet contained soya oil, whereas the effect of protein was much smaller in the group fed diets prepared with corn oil. The decrease in Lcn2 expression produced by soya oil persisted into adult life. Levels of the Lcn2 protein were closely correlated to the mRNA abundance. The results suggest a possible involvement of Lcn2 in the programming of hepatic function.
AB - Abstract: The mechanisms by which maternal protein deficiency programs insulin action in the offspring are poorly understood. The interpretation of transcriptomics is complicated by homeostatic adaptations, for example, changes in amino acid metabolism, which are potentially unrelated to the programming mechanism. The fatty acid composition of the maternal diet modulates the programming of insulin action, offering a possible strategy to circumvent these complications. Fetal livers harvested on d21 of gestation from pregnant rats fed high-protein (18 % w/w) and low-protein (9 % w/w) diets prepared with either corn or soya oil were screened with rat genome microarrays. Although a low-protein maternal diet altered the abundance of more than one hundred mRNAs in the fetal liver, only 40 were changed by the fatty acid composition of the diet (P < 0.05). One of these mRNAs was identified as lipocalin-2 (Lcn2). This pattern of differential expression was confirmed by qRT-PCR. The expression of Lcn2 was decreased by low-protein diets when the diet contained soya oil, whereas the effect of protein was much smaller in the group fed diets prepared with corn oil. The decrease in Lcn2 expression produced by soya oil persisted into adult life. Levels of the Lcn2 protein were closely correlated to the mRNA abundance. The results suggest a possible involvement of Lcn2 in the programming of hepatic function.
KW - Fetal origins of disease
KW - Hepatic development
KW - Metabolism
KW - Programming
UR - http://www.scopus.com/inward/record.url?scp=84891324750&partnerID=8YFLogxK
U2 - 10.1007/s12263-013-0380-4
DO - 10.1007/s12263-013-0380-4
M3 - Article
AN - SCOPUS:84891324750
VL - 9
JO - Genes & Nutrition
JF - Genes & Nutrition
SN - 1555-8932
IS - 1
M1 - 380
ER -