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© Fabrice Chrétien with Ultrapole, colorized by Jean-Marc Panaud
Cellule souche (en jaune) de muscle squelettique partiellement recouverte par la membrane basale, migrant sur une fibre musculaire (en bleu).
Publication : Cell metabolism

Loss of the PlagL2 transcription factor affects lacteal uptake of chylomicrons

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Cell metabolism - 01 Nov 2007

Van Dyck F, Braem CV, Chen Z, Declercq J, Deckers R, Kim BM, Ito S, Wu MK, Cohen DE, Dewerchin M, Derua R, Waelkens E, Fiette L, Roebroek A, Schuit F, Van de Ven WJ, Shivdasani RA

Link to Pubmed [PMID] – 17983586

Cell Metab. 2007 Nov;6(5):406-13

Enterocytes assemble dietary lipids into chylomicron particles that are taken up by intestinal lacteal vessels and peripheral tissues. Although chylomicrons are known to assemble in part within membrane secretory pathways, the modifications required for efficient vascular uptake are unknown. Here we report that the transcription factor pleomorphic adenoma gene-like 2 (PlagL2) is essential for this aspect of dietary lipid metabolism. PlagL2(-/-) mice die from postnatal wasting owing to failure of fat absorption. Lipids modified in the absence of PlagL2 exit from enterocytes but fail to enter interstitial lacteal vessels. Dysregulation of enterocyte genes closely linked to intracellular membrane transport identified candidate regulators of critical steps in chylomicron assembly. PlagL2 thus regulates important aspects of dietary lipid absorption, and the PlagL2(-/-) animal model has implications for the amelioration of obesity and the metabolic syndrome.

http://www.ncbi.nlm.nih.gov/pubmed/17983586