Evidence map›Paper›PMID 21771977›Full record

ArticleJournal of lipid research2011

Disruption of the murine procollagen C-proteinase enhancer 2 gene causes accumulation of pro-apoA-I and increased HDL levels.

Omar L Francone, Brian Y Ishida, Margarita de la Llera-Moya, Lori Royer, Christiane Happe, Jian Zhu, Robert J Chalkey, Peter Schaefer, Cheryl Cox, Al Burlingame and 2 more

Open access · hybridAbstract read
In one paragraph

Article in Journal of lipid research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

13 citing papers in PubMed, 27 citations in OpenAlex.

  1. Article
  2. PCPE1 and PCPE2: When Sequence Similarity Masks Functional Diversity.Arteriosclerosis, thrombosis, and vascular biology · 2026
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 2 countries.

Omar L FranconeDepartment of Cardiovascular and Metabolic Diseases, Global Research and Development, Pfizer, Inc., Groton, CT, USA. omarfrancone@gmail.com
Brian Y Ishida
Margarita de la Llera-Moya
Lori Royer
Christiane Happe
Jian Zhu
Robert J Chalkey
Peter Schaefer
Cheryl Cox
Al Burlingame
John P Kane
George H Rothblat
University of California, San Francisco · USPfizer (United States) · USChildren's Hospital of Philadelphia · USMax Planck Institute of Immunobiology and Epigenetics · DE

Funding

TISSUE CULTURE CORE LABORATORYP01HL022633 · NHLBI · MCP HAHNEMANN UNIVERSITY · PI LUND-KATZ, SISSEL · 1985 to 2013
$26.1M
YEAST THREONINE &SERINE KINASESP41RR001614 · NCRR · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI JULIUS, DAVID · 1985 to 2011
$24.1M
Purchase of Applied Biosystems QTRAP 5500 Mass SpectrometerS10RR026662 · NCRR · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI BURLINGAME, ALMA L · 2010 to 2010
$500k
NCRR NIH HHS P41 RR001614NCRR NIH HHS P41- RR0-01614NCRR NIH HHS S10 RR026662NHLBI NIH HHS HL-22633NHLBI NIH HHS P01 HL022633
6 · The paper itself

Abstract

Given the increased prevalence of cardiovascular disease in the world, the search for genetic variations that impact risk factors associated with the development of this disease continues. Multiple genetic association studies demonstrate that procollagen C-proteinase enhancer 2 (PCPE2) modulates HDL levels. Recent studies revealed an unexpected role for this protein in the proteolytic processing of pro-apolipoprotein (apo) A-I by enhancing the cleavage of the hexapeptide extension present at the N-terminus of apoA-I. To investigate the role of the PCPE2 protein in an in vivo model, PCPE2-deficient (PCPE2 KO) mice were examined, and a detailed characterization of plasma lipid profiles, apoA-I, HDL speciation, and function was done. Results of isoelectric focusing (IEF) electrophoresis together with the identification of the amino terminal peptides DEPQSQWDK and WHVWQQDEPQSQWDVK, representing mature apoA-I and pro-apoA-I, respectively, in serum from PCPE2 KO mice confirmed that PCPE2 has a role in apoA-I maturation. Lipid profiles showed a marked increase in plasma apoA-I and HDL-cholesterol (HDL-C) levels in PCPE2 KO mice compared with wild-type littermates, regardless of gender or diet. Changes in HDL particle size and electrophoretic mobility observed in PCPE2 KO mice suggest that the presence of pro-apoA-I impairs the maturation of HDL. ABCA1-dependent cholesterol efflux is defective in PCPE2 KO mice, suggesting that the functionality of HDL is altered.

Indexed as

Amino Acid SequenceAnimalsApolipoprotein A-ICholesterolFemaleGene Knockdown TechniquesGlycoproteinsIntracellular Signaling Peptides and ProteinsLipoproteins, HDLMaleMiceMolecular Sequence DataParticle SizeApolipoprotein A-ICholesterolGlycoproteinsIntracellular Signaling Peptides and ProteinsLipoproteins, HDLPcolce2 protein, mouse

Identifiers

PMID21771977
PMCPMC3196229
OpenAlexW2098296263

What OpenQuestion holds

Textmetadata
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.