Evidence map›Paper›PMID 20368361›Full record

ArticleMolecular and cellular biology2010

Targeted deletion of Capn4 in cells of the chondrocyte lineage impairs chondrocyte proliferation and differentiation.

Aki Kashiwagi, Ernestina Schipani, Mikaela J Fein, Peter A Greer, Masako Shimada

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 20% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Pooled it
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  9. High-resolution genome screen for bone mineral density in heterogeneous stock rat.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2014
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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

5 authors at 3 institutions in 2 countries.

Aki Kashiwagi50 Blossom Street, Thier 10, Boston, MA 02114, USA.
Ernestina Schipani
Mikaela J Fein
Peter A Greer
Masako Shimada
Harvard University · USMassachusetts General Hospital · USQueen's University · CA

Funding

DIREECT CALPAIN-PTH1R BINDING AFFECTS ACTIONS OF PTH/PTHrPR01DK072102 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI SHIMADA, MASAKO · 2005 to 2010
$1.5M
CIHR MOP-81189NIDDK NIH HHS R01 DK072102
6 · The paper itself

Abstract

Calpains are calcium-dependent intracellular cysteine proteases, which include ubiquitously expressed mu- and m-calpains. Both calpains are heterodimers consisting of a large catalytic subunit and a small regulatory subunit. The calpain small subunit encoded by the gene Capn4 directly binds to the intracellular C-terminal tail of the receptor for the parathyroid hormone (PTH) and PTH-related peptide and modulates cellular functions in cells of the osteoblast lineage in vitro and in vivo. To investigate a physiological role of the calpain small subunit in cells of the chondrocyte lineage, we generated chondrocyte-specific Capn4 knockout mice. Mutant embryos had reduced chondrocyte proliferation and differentiation in embryonic growth plates compared with control littermates. In vitro analysis further revealed that deletion of Capn4 in cells of the chondrocyte lineage correlated with impaired cell cycle progression at the G(1)/S transition, reduced cyclin D gene transcription, and accumulated cell cycle proteins known as calpain substrates. Moreover, silencing of p27(Kip1) rescued an impaired cell growth phenotype in Capn4 knockdown cells, and reintroducing the calpain small subunit partially normalized cell growth and accumulated cyclin D protein levels in a dose-dependent manner. Collectively, our findings suggest that the calpain small subunit is essential for proper chondrocyte functions in embryonic growth plates.

Indexed as

Cell LineageCell ProliferationGene DeletionAnimalsBiomarkersCalpainCell CycleCell DifferentiationCells, CulturedChondrocytesCyclin D1Cyclin-Dependent Kinase Inhibitor p27Embryo, MammalianFemaleGrowth PlateMiceBiomarkersCalpainCapns1 protein, mouseCdkn1b protein, mouseCyclin D1Cyclin-Dependent Kinase Inhibitor p27Parathyroid HormoneParathyroid Hormone-Related ProteinProtein IsoformsProtein SubunitsTransforming Growth Factor beta

Identifiers

PMID20368361
PMCPMC2876508
OpenAlexW2135201215

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.