Transcriptional regulation of copper metabolism genes in the liver of fetal and neonatal control and iron-deficient rats

Malgorzata Lenartowicz, Christine Kennedy, Helen Hayes, Harry J McArdle

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Abstract

Copper and iron metabolism have been known to interact for many years. We have previously shown, during pregnancy, that copper levels in the maternal liver rise as a consequence of iron deficiency, but that levels in the fetal liver decrease. In this paper, we measure expression of genes involved in copper metabolism in fetal and postnatal liver, to test whether alterations can explain this observation. Additionally, we study the extent to which gene expression changes in the latter stages of pregnancy and in the perinatal period. Ctr1 expression levels dropped to term, rising again thereafter. There was no difference in gene expression between control and iron deficient animals. Atox1 expression remained approximately stable until term, and then there was a rise to a maximum at about Day 8. Atp7a expression levels remained constant, except for a brief drop at term. Atp7b levels, in contrast, decreased from a maximum early in gestation to low levels in the term and post-natal livers. Ceruloplasmin expression appeared to be diametrically opposite to Atp7b. The other two metallochaperones showed the same pattern of expression as Atox1, with a decrease to term, a rise at Day 1, or a rise after birth followed by a brief decrease at about Day 3. None of the genes were significantly affected by iron deficiency, suggesting that changes in expression cannot explain the altered copper levels in the fetal and neonatal liver.

Original languageEnglish
Pages (from-to)51-59
Number of pages9
JournalBiometals
Volume28
Issue number1
Early online date28 Oct 2014
DOIs
Publication statusPublished - Feb 2015

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Metabolism
Liver
Rats
Copper
Iron
Genes
iron
liver
rats
copper
pregnancy
Gene Expression
genes
Gene expression
Pregnancy
gene expression
Metallochaperones
perinatal period
ferroxidase
Ceruloplasmin

Keywords

  • copper-iron interactions
  • perinatal development
  • metallochaperones
  • ATP7A
  • ATP7B
  • copper metabolism
  • Hooded Lister rats

Cite this

Transcriptional regulation of copper metabolism genes in the liver of fetal and neonatal control and iron-deficient rats. / Lenartowicz, Malgorzata; Kennedy, Christine; Hayes, Helen; McArdle, Harry J.

In: Biometals, Vol. 28, No. 1, 02.2015, p. 51-59.

Research output: Contribution to journalArticle

Lenartowicz, Malgorzata ; Kennedy, Christine ; Hayes, Helen ; McArdle, Harry J. / Transcriptional regulation of copper metabolism genes in the liver of fetal and neonatal control and iron-deficient rats. In: Biometals. 2015 ; Vol. 28, No. 1. pp. 51-59.
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