Evidence map›Paper›PMID 30422112›Full record

ArticleeLife2018

Comment on 'Orthogonal lipid sensors identify transbilayer asymmetry of plasma membrane cholesterol'.

Kevin C Courtney, Karen Yy Fung, Frederick R Maxfield, Gregory D Fairn, Xiaohui Zha

Abstract readLetterComment
In one paragraph

Article in eLife, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Pathways and Mechanisms of Cellular Cholesterol Efflux-Insight From Imaging.Frontiers in cell and developmental biology · 2022
    Review
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Kevin C CourtneyDepartment of Biochemistry, Microbiology and Immunology, University of Ottawa, Ontario, Canada.ORCID http://orcid.org/0000-0003-1315-4917
Karen Yy FungKeenan Research Centre, St. Michael's Hospital, Toronto, Canada.
Frederick R MaxfieldDepartment of Biochemistry, Weill Cornell Medical College, New York, United States.ORCID http://orcid.org/0000-0003-4396-8866
Gregory D FairnKeenan Research Centre, St. Michael's Hospital, Toronto, Canada.
Xiaohui ZhaDepartment of Biochemistry, Microbiology and Immunology, University of Ottawa, Ontario, Canada.ORCID http://orcid.org/0000-0003-2873-3073

Funding

Macrophage-Lipoprotein InteractionsR01HL093324 · NHLBI · WEILL MEDICAL COLL OF CORNELL UNIV · PI MAXFIELD, FREDERICK R. · 2009 to 2025
$6.7M
Intracellular Cholesterol TransportR01GM123462 · NIGMS · WEILL MEDICAL COLL OF CORNELL UNIV · PI MAXFIELD, FREDERICK R. · 2018 to 2021
$1.4M
CIHR MOP-133656CIHR Operating Grant MOP-130453NHLBI NIH HHS R01 HL093324NIGMS NIH HHS R01 GM123462NIH HHS R01 GM123462
6 · The paper itself

Abstract

The plasma membrane in mammalian cells is rich in cholesterol, but how the cholesterol is partitioned between the two leaflets of the plasma membrane remains a matter of debate. Recently, Liu et al. used domain 4 (D4) of perfringolysin O as a cholesterol sensor to argue that cholesterol is mostly in the exofacial leaflet (Liu et al., 2017). This conclusion was made by interpreting D4 binding in live cells using in vitro calibrations with liposomes. However, liposomes may be unfaithful in mimicking the plasma membrane, as we demonstrate here. Also, D4 binding is highly sensitive to the presence of cytosolic proteins. In addition, we find that a D4 variant, which requires >35 mol% cholesterol to bind to liposomes in vitro, does in fact bind to the cytoplasmic leaflet of the plasma membrane in a cholesterol-dependent manner. Thus, we believe, based on the current evidence, that it is unlikely that there is a significantly higher proportion of cholesterol in the exofacial leaflet of the plasma membrane compared to the cytosolic leaflet.

Indexed as

AnimalsCell MembraneCholesterolLipid BilayersLipidsLiposomesMembranesCholesterolLipid BilayersLipidsLiposomescell biologycholesterolnoneorthogonal lipid sensorsplasma membranetransbilayer asymmetry

Identifiers

PMID30422112
PMCPMC6257810

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.