Vitamin E intestinal absorption: Regulation of membrane transport across the enterocyte. Issue 4 (11th October 2018)

• Record Type: Journal Article
• Authors: Reboul, Emmanuelle
• Other Names: Zingg Jean‐Marc guestEditor.
• Is Part Of: IUBMB life. Volume 71:Issue 4(2019)
• Page Start: 416
• Page End: 423
• Publication Date: 2018-10-11
• Subjects: tocopherol -- intestine -- mixed micelles -- membrane transporters -- uptake -- chylomicrons -- high density lipoproteins -- fat‐soluble vitamins, bioavailability, competition; Biochemistry -- Periodicals; Molecular biology -- Periodicals; 572.8
• DOI: 10.1002/iub.1955
• Languages: English
• ISSNs: 1521-6543

Abstract

Abstract: Vitamin E is an essential molecule for our development and health. It has long been thought that it was absorbed and transported through cellular membranes by a passive diffusion process. However, data obtained during the past 15 years showed that its absorption is actually mediated, at least in part, by cholesterol membrane transporters including the scavenger receptor class B type I (SR‐BI), CD36 molecule (CD36), NPC1‐like transporter 1 (NPC1L1), and ATP‐binding cassettes A1 and G1 (ABCA1 and ABCG1). This review focuses on the absorption process of vitamin E across the enterocyte. A special attention is given to the regulation of this process, including the possible competition with other fat‐soluble micronutrients, and the modulation of transporter expressions. Overall, recent results noticeably increased the comprehension of vitamin E intestinal transport, but additional investigations are still required to fully appreciate the mechanisms governing vitamin E bioavailability. © 2018 IUBMB Life, 71(4):416–423, 2019