Evidence map›Paper›PMID 22848640›Full record

ArticlePloS one2012

Annexin A2 is a natural extrahepatic inhibitor of the PCSK9-induced LDL receptor degradation.

Nabil G Seidah, Steve Poirier, Maxime Denis, Rex Parker, Bowman Miao, Claudio Mapelli, Annik Prat, Hanny Wassef, Jean Davignon, Katherine A Hajjar and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
10.6field-weighted citation impact, top 1% of its field
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

56 citing papers in PubMed, 122 citations in OpenAlex.

  1. Article
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  9. The evolving landscape of PCSK9 inhibition in cancer.European journal of pharmacology · 2023
    Review
  10. Article
  11. Article
  12. Review
  13. Article
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  15. Article
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  18. Article
  19. Physical activity to reduce PCSK9 levels.Frontiers in cardiovascular medicine · 2022
    Review
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 5 institutions in 2 countries.

Nabil G SeidahLaboratory of Biochemical Neuroendocrinology, Clinical Research Institute of Montreal, Affiliated to the Université de Montréal, Montréal, Québec, Canada.
Steve Poirier
Maxime Denis
Rex Parker
Bowman Miao
Claudio Mapelli
Annik Prat
Hanny Wassef
Jean Davignon
Katherine A Hajjar
Gaétan Mayer
Bristol-Myers Squibb (United States) · USMontreal Clinical Research Institute · CAUniversité de Montréal · CACornell University · USMontreal Heart Institute · CA

Funding

Canadian Institutes of Health Research CTP 82946Canadian Institutes of Health Research MOP 102741
6 · The paper itself

Abstract

Proprotein convertase subtilisin/kexin-9 (PCSK9) enhances the degradation of hepatic low-density lipoprotein receptor (LDLR). Deletion of PCSK9, and loss-of-function mutants in humans result in lower levels of circulating LDL-cholesterol and a strong protection against coronary heart disease. Accordingly, the quest for PCSK9 inhibitors has major clinical implications. We have previously identified annexin A2 (AnxA2) as an endogenous binding partner and functional inhibitor of PCSK9. Herein, we studied the relevance of AnxA2 in PCSK9 inhibition and lipid metabolism in vivo. Plasma analyses of AnxA2(-/-) mice revealed: i) a ∼1.4-fold increase in LDL-cholesterol without significant changes in VLDLs or HDLs, and ii) a ∼2-fold increase in circulating PCSK9 levels. Western blotting and immunohistochemistry of AnxA2(-/-) tissues revealed that the LDLR was decreased by ∼50% in extrahepatic tissues, such as adrenals and colon. We also show that AnxA2-derived synthetic peptides block the PCSK9≡LDLR interaction in vitro, and adenoviral overexpression of AnxA2 in mouse liver increases LDLR protein levels in vivo. These results suggest that AnxA2 acts as an endogenous regulator of LDLR degradation, mostly in extrahepatic tissues. Finally, we identified an AnxA2 coding polymorphism, V98L, that correlates with lower circulating levels of PCSK9 thereby extending our results on the physiological role of AnxA2 in humans.

Indexed as

ProteolysisAdenoviridaeAmino Acid SequenceAnimalsAnnexin A2Cell LineCholesterol, LDLCricetinaeExonsExtracellular SpaceHumansLiverMaleMiceMice, Inbred C57BLMolecular Sequence DataAnnexin A2Cholesterol, LDLPCSK9 protein, humanProprotein Convertase 9Proprotein ConvertasesReceptors, LDLSerine Endopeptidases

Identifiers

PMID22848640
PMCPMC3407131
OpenAlexW2050348933

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.