Evidence map›Paper›PMID 24379757›Full record

ArticleFrontiers in cellular neuroscience2013

Sonic hedgehog promotes generation and maintenance of human forebrain Olig2 progenitors.

J Alberto Ortega, Nevena V Radonjić, Nada Zecevic

Open access · goldAbstract read
In one paragraph

Article in Frontiers in cellular neuroscience, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

30 citing papers in PubMed, 50 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

3 authors at 1 institution in 1 country.

J Alberto OrtegaDepartment of Neuroscience, University of Connecticut Health Center Farmington, CT, USA.
Nevena V RadonjićDepartment of Neuroscience, University of Connecticut Health Center Farmington, CT, USA ; Institute of Medical and Clinical Biochemistry, School of Medicine, University of Belgrade Belgrade, Serbia.
Nada ZecevicDepartment of Neuroscience, University of Connecticut Health Center Farmington, CT, USA.
UConn Health · US

Funding

Development of the Cerebral Cortex in MammalsR01NS041489 · NINDS · UNIVERSITY OF CONNECTICUT SCH OF MED/DNT · PI ZECEVIC, NADA R · 2001 to 2013
$3.8M
NINDS NIH HHS R01 NS041489
6 · The paper itself

Abstract

Function of oligodendrocytes (OLs), myelin forming cells in the CNS, is disrupted in demyelinating diseases such as periventricular leukomalacia or multiple sclerosis. It is, thus, important to better understand factors that can affect generation or differentiation of human OLs. In rodents, Sonic hedgehog (Shh) is influencing expression of Olig2, a helix-loop-helix transcription factor required for development of OLs. In humans, Olig2 is present in cortical progenitors at midgestation, however the role of Shh in the specification of human OLs, including Olig2 positive (Olig2(+)) progenitors, is not fully understood. Here we studied in vitro effects of Shh signaling on proliferation and specification of human cortical Olig2(+) progenitors at midgestation. First, we established that the spatial pattern of Olig2 expression in the human developing CNS, described on cryosections, was preserved in mixed and enriched radial glia cell (RGC) cultures. Next, we demonstrated that in vitro treatment with Shh induced an increase in the number of Olig2(+) progenitors. Shh treatment increased the density of early oligodendrocyte progenitors (OPCs) at the expense of RGC, while the number of late OPCs, did not change. However, inhibition of endogenous Shh with cyclopamine did not reduce the density of Olig2(+) cells, implying the presence of an additional Shh-independent mechanism for OLs generation in vitro. These results suggest that the primary role of Shh signaling in the human dorsal oligodendrogenesis is the expansion and specification of multipotent radial glia progenitors into Olig2(+) early OPCs. These results obtained in vitro are relevant to understand primary myelination during CNS development, as well as remyelination in demyelinating diseases.

Indexed as

cellular fatecortical developmentgliamyelinationtranscription factors

Identifiers

PMID24379757
PMCPMC3861791
OpenAlexW2072129144

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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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.