Recent advances in elucidating the role of the microsomal triglyceride transfer protein in apolipoprotein B lipoprotein assembly.

Abstract:

:The microsomal triglyceride transfer protein is necessary for the assembly and secretion of lipoproteins containing apolipoprotein B. During the past year, significant progress has been made towards understanding the role of microsomal triglyceride transfer protein in lipoprotein assembly at both a cellular and molecular level. Studies carried out in a variety of heterologous expression systems, as well as the use of microsomal triglyceride transfer protein inhibitors in hepatoma cell lines, have been critical to this progress. It has been shown that microsomal triglyceride transfer protein plays a key role in the early stages of lipoprotein assembly, most likely by transferring lipid to nascent apolipoprotein B as it enters the lumen of the endoplasmic reticulum. The evidence indicates that microsomal triglyceride transfer protein does not play a major role in addition of bulk core lipid in the late stages of apolipoprotein B48 lipoprotein assembly. Thus, microsomal triglyceride transfer protein appears to control the number of apolipoprotein B lipoprotein particles secreted but not the lipid composition.

journal_name

Curr Opin Lipidol

authors

Gordon DA

doi

10.1097/00041433-199706000-00002

subject

Has Abstract

pub_date

1997-06-01 00:00:00

pages

131-7

issue

3

eissn

0957-9672

issn

1473-6535

journal_volume

8

pub_type

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