AJP - GI Ad Instruments
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
 QUICK SEARCH:   [advanced]


     


Am J Physiol Gastrointest Liver Physiol (August 28, 2008). doi:10.1152/ajpgi.90237.2008
This Article
Right arrow Full Text (PDF)
Right arrow Supplemental Tables
Right arrow All Versions of this Article:
295/5/G942    most recent
ajpgi.90237.2008v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by BEASLAS, O.
Right arrow Articles by CARRIERE, V.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by BEASLAS, O.
Right arrow Articles by CARRIERE, V.
Submitted on March 13, 2008
Revised on August 4, 2008
Accepted on August 25, 2008

TRANSCRIPTOME RESPONSE OF ENTEROCYTES TO DIETARY LIPIDS: IMPACT ON CELL ARCHITECTURE, SIGNALING AND METABOLISM GENES

Olivier BEASLAS1, Francois TORREILLES2, Pierre CASELLAS2, Dominique SIMON2, Gerard FABRE2, Michel LACASA1, Francois DELERS1, Jean CHAMBAZ3, Monique ROUSSET1, and Veronique CARRIERE1*

1 UMRS872 INSERM/UPD/UPMC
2 Sanofi-Aventis
3 UMRS872 INSERM/UPMC/UPD

* To whom correspondence should be addressed. E-mail: veronique.carriere{at}crc.jussieu.fr.

Intestine contributes to lipid homeostasis through the absorption of dietary lipids, which reach the apical pole of enterocytes as micelles. The present study aimed to identify the specific impact of these dietary lipids-containing micelles on gene expression in enterocytes. We analyzed, by micro-array, the modulation of gene expression in Caco-2/TC7 enterocytes in response to different lipid supply conditions that reproduced either the permanent presence of albumin-bound lipids at the basal pole of enterocytes or the physiological delivery, at the apical pole of lipid micelles, which differ in their composition during the inter-prandial (IPM) or the post-prandial (PPM) state. These different conditions led to distinct gene expression profiles. We observed that, contrary to lipids supplied at the basal pole, apical lipid micelles modulated a large number of genes. Moreover, when compared to the apical supply of IPM, PPM specifically impacted 46 genes from 3 major cell function categories: signal transduction, lipid metabolism and cell adhesion/architecture. Results from this first large-scale analysis underline the importance of the mode and polarity of lipid delivery on enterocyte gene expression. They demonstrate specific and coordinated transcriptional effects of dietary lipids-containing micelles that could impact the structure and polarization of enterocytes and their functions in nutrient transfer.




This article has been cited by other articles:


Home page
Mol. Cell. Biol.Home page
A.-L. Cattin, J. Le Beyec, F. Barreau, S. Saint-Just, A. Houllier, F. J. Gonzalez, S. Robine, M. Pincon-Raymond, P. Cardot, M. Lacasa, et al.
Hepatocyte Nuclear Factor 4{alpha}, a Key Factor for Homeostasis, Cell Architecture, and Barrier Function of the Adult Intestinal Epithelium
Mol. Cell. Biol., December 1, 2009; 29(23): 6294 - 6308.
[Abstract] [Full Text] [PDF]




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
Visit Other APS Journals Online
Copyright © 1977 by the American Physiological Society.