Iron-related transcriptomic variations in CaCo-2 cells, an in vitro model of intestinal absorptive cells.

Abstract:

:Regulation of iron absorption by duodenal enterocytes is essential for the maintenance of homeostasis by preventing iron deficiency or overload. Despite the identification of a number of genes implicated in iron absorption and its regulation, it is likely that further factors remain to be identified. For that purpose, we used a global transcriptomic approach, using the CaCo-2 cell line as an in vitro model of intestinal absorptive cells. Pangenomic screening for variations in gene expression correlating with intracellular iron content allowed us to identify 171 genes. One hundred nine of these genes are clustered into five types of expression profile. This is the first time that most of these genes have been associated with iron metabolism. Functional annotation of these five clusters indicates potential links between the immune response, proteolysis processes, and iron depletion. In contrast, iron overload is associated with cellular metabolism, especially that of lipids and glutathione involving redox function and electron transfer.

journal_name

Physiol Genomics

journal_title

Physiological genomics

authors

Chicault C,Toutain B,Monnier A,Aubry M,Fergelot P,Le Treut A,Galibert MD,Mosser J

doi

10.1152/physiolgenomics.00297.2005

subject

Has Abstract

pub_date

2006-06-16 00:00:00

pages

55-67

issue

1

eissn

1094-8341

issn

1531-2267

pii

00297.2005

journal_volume

26

pub_type

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