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. 2012 Jun;39(6):7095-104.
doi: 10.1007/s11033-012-1541-z. Epub 2012 Feb 6.

Effect of gestational protein deficiency and excess on hepatic expression of genes related to cell cycle and proliferation in offspring from late gestation to finishing phase in pig

Simone Altmann  1 , Eduard Murani, Cornelia C Metges, Manfred Schwerin, Klaus Wimmers, Siriluck Ponsuksili
Affiliations

Effect of gestational protein deficiency and excess on hepatic expression of genes related to cell cycle and proliferation in offspring from late gestation to finishing phase in pig

Simone Altmann et al. Mol Biol Rep. 2012 Jun.

Abstract

Maternal diet during gestation is known to affect offspring phenotype induction. In the present study the influence of maternal protein restriction and excess during gestation on offspring candidate gene expression was analysed. German Landrace gilts were fed control, low protein (LP) or high protein (HP) diet throughout gestation (n = 18 per diet group). After birth piglets were cross-fostered and lactated by control diet fed nursing sows. Samples of offspring liver tissue were taken at foetal, newborn, weaning and finishing phase (n = 16, respectively). Transcript amount of selected candidate genes related to cell cycle and cell proliferation was estimated by quantitative real-time PCR. Maternal protein restriction influenced gene expression of candidate genes CCND2, GADD45B, GALK1, GSTP1, MARCKS, MGMT, NEAT1, PSEN1, SNX1 and TRPM7 in liver from foetuses, newborn piglets, weaned and/or finisher pigs. In the offspring of mothers fed a HP diet expression of target genes was affected exclusively in finisher pigs showing increased transcript amount of CCND2, GALK1, MARCKS, SNX1 and TRPM7. The results of the present study clearly show a long-lasting impact of the maternal protein supply during gestation on offspring candidate genes. Remarkably, effects of gestational HP diet became evident in finisher pigs while LP supply already alters genes expression in foetal tissue. Thus it is suggested that LP and HP supply affect the offspring in utero by different physiological mechanisms with the consequence of late effects in case of prenatal protein excess in contrast to early effects in case of protein restriction.

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