Evidence map›Paper›PMID 21606199›Full record

ArticleMolecular and cellular biology2011

The Ric-8B gene is highly expressed in proliferating preosteoblastic cells and downregulated during osteoblast differentiation in a SWI/SNF- and C/EBPbeta-mediated manner.

Rodrigo Grandy, Hugo Sepulveda, Rodrigo Aguilar, Philippe Pihan, Berta Henriquez, Juan Olate, Martin Montecino

Open access · bronzeAbstract read
In one paragraph

Article in Molecular and cellular biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.9field-weighted citation impact, top 26% 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

6 citing papers in PubMed, 18 citations in OpenAlex.

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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

7 authors at 2 institutions in 1 country.

Rodrigo GrandyCenter for Biomedical Research, Faculty of Biological Sciences and Faculty of Medicine, and FONDAP Center forGenome Regulation, Universidad Andres Bello, Santiago, Chile.
Hugo Sepulveda
Rodrigo Aguilar
Philippe Pihan
Berta Henriquez
Juan Olate
Martin Montecino
Universidad Andrés Bello · CLUniversity of Concepción · CL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Ric-8 gene encodes a guanine exchange factor (GEF) that modulates G protein-mediated signaling, exhibiting a relevant role during regulation of cell division. In mammals, two Ric-8 homologues have been reported (Ric-8A and Ric-8B), and recent studies indicate equivalent roles for each protein. Here, we show that the Ric-8B gene is negatively regulated during osteoblast differentiation by the transcription factor C/EBPβ. Only the larger C/EBPβ isoform (C/EBPβ-LAP*) downregulates Ric-8B gene promoter activity in osteoblastic cells. Accordingly, knockdown of C/EBPβ expression by small intefering RNA in osteoblastic cells results in a significant increase of Ric-8B gene expression. Transient overexpression of Brg1 or Brm, the catalytic subunits of the SWI/SNF chromatin-remodeling complex, inhibits Ric-8B promoter activity. Also, the presence of inactive SWI/SNF complexes in osteoblastic cells results in increased endogenous Ric-8B transcription, indicating that SWI/SNF activity negatively regulates Ric-8B expression. During osteoblast differentiation, Ric-8B gene repression is accompanied by changes in nucleosome placement at the proximal Ric-8B gene promoter and reduced accessibility to regulatory sequences.

Indexed as

Gene Expression RegulationAnimalsCCAAT-Enhancer-Binding Protein-betaCell DifferentiationCell LineChromosomal Proteins, Non-HistoneDNA HelicasesDown-RegulationGuanine Nucleotide Exchange FactorsHumansMiceNuclear ProteinsOsteoblastsPromoter Regions, GeneticTranscription FactorsCCAAT-Enhancer-Binding Protein-betaCebpb protein, mouseChromosomal Proteins, Non-HistoneDNA HelicasesGuanine Nucleotide Exchange FactorsNuclear ProteinsRic8b protein, mouseSmarca2 protein, mouseSmarca4 protein, mouseSWI-SNF-B chromatin-remodeling complexTranscription Factors

Identifiers

PMID21606199
PMCPMC3133387
OpenAlexW2148259595

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.