Evidence map›Paper›PMID 28972540›Full record

ArticleThe Journal of clinical investigation2017

Proprotein convertase furin regulates osteocalcin and bone endocrine function.

Omar Al Rifai, Jacqueline Chow, Julie Lacombe, Catherine Julien, Denis Faubert, Delia Susan-Resiga, Rachid Essalmani, John Wm Creemers, Nabil G Seidah, Mathieu Ferron

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical investigation, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 1 pooled it
5.7field-weighted citation impact, top 3% 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

35 citing papers in PubMed, 1 synthesis or guideline pooled it, 75 citations in OpenAlex.

  1. Pooled it
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  16. The Role of SIRT3 in the Osteoporosis.Frontiers in endocrinology · 2022
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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

10 authors at 3 institutions in 3 countries.

Omar Al RifaiIntegrative and Molecular Physiology Research Unit, Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada.
Jacqueline ChowIntegrative and Molecular Physiology Research Unit, Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada.
Julie LacombeIntegrative and Molecular Physiology Research Unit, Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada.
Catherine JulienIntegrative and Molecular Physiology Research Unit, Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada.
Denis FaubertProteomics Discovery Platform and.
Delia Susan-ResigaBiochemical Neuroendocrinology Research Unit, IRCM, Québec, Canada.
Rachid EssalmaniBiochemical Neuroendocrinology Research Unit, IRCM, Québec, Canada.
John Wm CreemersDepartment of Human Genetics, KU Leuven, Leuven, Belgium.
Nabil G SeidahBiochemical Neuroendocrinology Research Unit, IRCM, Québec, Canada.
Mathieu FerronIntegrative and Molecular Physiology Research Unit, Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada.
Université de Montréal · CADigital Proteomics (United States) · USKU Leuven · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Osteocalcin (OCN) is an osteoblast-derived hormone that increases energy expenditure, insulin sensitivity, insulin secretion, and glucose tolerance. The cDNA sequence of OCN predicts that, like many other peptide hormones, OCN is first synthesized as a prohormone (pro-OCN). The importance of pro-OCN maturation in regulating OCN and the identity of the endopeptidase responsible for pro-OCN cleavage in osteoblasts are still unknown. Here, we show that the proprotein convertase furin is responsible for pro-OCN maturation in vitro and in vivo. Using pharmacological and genetic experiments, we also determined that furin-mediated pro-OCN cleavage occurred independently of its γ-carboxylation, a posttranslational modification that is known to hamper OCN endocrine action. However, because pro-OCN is not efficiently decarboxylated and activated during bone resorption, inactivation of furin in osteoblasts in mice resulted in decreased circulating levels of undercarboxylated OCN, impaired glucose tolerance, and reduced energy expenditure. Furthermore, we show that Furin deletion in osteoblasts reduced appetite, a function not modulated by OCN, thus suggesting that osteoblasts may secrete additional hormones that regulate different aspects of energy metabolism. Accordingly, the metabolic defects of the mice lacking furin in osteoblasts became more apparent under pair-feeding conditions. These findings identify furin as an important regulator of bone endocrine function.

Indexed as

Amino Acid SequenceAnimalsBone and BonesCells, CulturedEndocrine SystemEnergy MetabolismFurinMaleMiceMice, Inbred C57BLMice, TransgenicOsteoblastsOsteocalcinProprotein Convertase 5Protein Processing, Post-TranslationalProtein TransportFurinOsteocalcinProprotein Convertase 5

Identifiers

PMID28972540
PMCPMC5663350
OpenAlexW2763401475

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.