Cited by 234Barrier Structure and Function StudiesCholesterol and Lipid MetabolismLipid metabolism and disorders

What are lipoproteins doing in the brain?

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Wang, Hong, Eckel, Robert H.·2014·Trends in Endocrinology & Metabolism

Abstract

Lipoproteins in plasma transport lipids between tissues, however, only high-density lipoproteins (HDL) appear to traverse the blood-brain barrier (BBB); thus, lipoproteins found in the brain must be produced within the central nervous system. Apolipoproteins E (ApoE) and ApoJ are the most abundant apolipoproteins in the brain, are mostly synthesized by astrocytes, and are found on HDL. In the hippocampus and other brain regions, lipoproteins help to regulate neurobehavioral functions by processes that are lipoprotein receptor-mediated. Moreover, lipoproteins and their receptors also have roles in the regulation of body weight and energy balance, acting through lipoprotein lipase (LPL) and the low-density lipoprotein (LDL) receptor-related protein (LRP). Thus, understanding lipoproteins and their metabolism in the brain provides a new opportunity with potential therapeutic relevance.

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Crossref · 10.1016/j.tem.2013.10.003

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  • Most cholesterol in the CNS is synthesized in situ because the blood-brain barrier blocks transport of peripheral lipoprotein cholesterol to the brain.

    “Most cholesterol in CNS is synthesized in situ, because the transport of lipoprotein-mediated peripheral cholesterol to brain is blocked by BBB [29, 30].”

    From MicroRNAs in brain cholesterol metabolism and their implications for Alzheimer's disease (2016) · cites this paper as [30]

    The “Major Differences between Lipoproteins in Plasma vs. in the Brain” section says the BBB necessitates local synthesis to maintain brain cholesterol homeostasis, supporting the main point. But it also says some circulating HDL enters the brain, and the “Scavenger receptor class B type 1 (SR-BI)” section describes uptake of HDL-associated cholesterol ester after HDL crosses the BBB. The claim’s categorical statement that the BBB blocks peripheral lipoprotein-mediated cholesterol transport is therefore too strong; page numbers were not available in our copy. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • In APOEch, homeostatic gliovascular unit (GVU) regulation appears to be determined by CLU and APOE gene expression, possibly via cholesterol efflux and lipid regulation on the blood-brain barrier (BBB).

    “Homeostatic GVU regulation in APOEch seems to be determined by CLU and APOE gene expression, possibly via cholesterol efflux and lipid regulation on the BBB [125]”

    From Gliovascular alterations in sporadic and familial Alzheimer's disease: <scp><i>APOE3</i></scp> Christchurch homozygote glioprotection (2023) · cites this paper as [125]

    The sections on lipoprotein metabolism and plasma–brain differences (page unavailable) discuss ApoE and ApoJ/clusterin expression, cholesterol transport, and the BBB’s role in brain cholesterol homeostasis. They do not address APOEch or say that CLU and APOE gene expression determines homeostatic gliovascular-unit regulation, including through effects on the BBB. (LLM, conf=0.84)

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Research works printed but not linked: 2

  1. [15]Vance JE Hayashi H Formation and function of apolipoprotein E-containing lipoproteins in the nervous system Biochim. Biophys. Acta 2010 1801 806 818 20170744
  2. [59]Hayashi H Apolipoprotein E-containing lipoproteins protect neurons from apoptosis via a signaling pathway involving low-density lipoprotein receptor-related protein-1 J. Neurosci 2007 27 1933 1941 17314289 PMC6673537

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Authors
Wang, H., & Eckel, R. H.
Affiliations
University of Colorado Anschutz (US)
Corresponding author
Wang, Hong
Venue
Trends in Endocrinology & Metabolism
Publisher
Elsevier BV
Published
2014-01
Volume
25
Issue
1
Pages
8-14
ISSN
1043-2760 (ISSN-L)
OpenAlex
W1994756206
Cited by
234
References
68
Citations by year
2026: 17 · 2025: 19 · 2024: 14 · 2023: 24 · 2022: 25 · 2021: 29 · 2020: 27 · 2019: 8 · 2018: 14 · 2017: 15 · 2016: 12 · 2015: 18 · 2014: 11 · 2012: 1
FWCI
1.32
Type
journal article
Language
en
Open access
Locations
  • Trends in Endocrinology and Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (R01DK089309)
Topics
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
Keywords
lipoproteins, brain, high-density lipoprotein, apolipoprotein E, clusterin, blood-brain barrier, astrocytes, lipoprotein receptors, hippocampus, neurobehavior, energy balance, lipoprotein lipase, LDL receptor-related protein, lipoprotein metabolism
MeSH terms
Animals, Apolipoproteins E, Blood-Brain Barrier, Brain, Humans, Lipoprotein Lipase, Lipoproteins, Neurons, Receptors, LDL, CD36 Antigens, Membrane Microdomains, Low Density Lipoprotein Receptor-Related Protein-1, Mice

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