Evidence map›Paper›PMID 18388303›Full record

ArticleStem cells (Dayton, Ohio)2008

Assessment of stromal-derived inducing activity in the generation of dopaminergic neurons from human embryonic stem cells.

Tandis Vazin, Jia Chen, Chun-Ting Lee, Rose Amable, William J Freed

Open access · bronzeAbstract read
In one paragraph

Article in Stem cells (Dayton, Ohio), 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

37 citing papers in PubMed, 87 citations in OpenAlex.

  1. Article
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  3. Review
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  7. Review
  8. Stem cell colony interspacing effect on differentiation to neural cells.Journal of tissue engineering and regenerative medicine · 2018
    Article
  9. Article
  10. Review
  11. In Vitro Models for Neurogenesis.Cold Spring Harbor perspectives in biology · 2016
    Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
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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.

Tandis VazinDepartment of Health and Human Services, Cellular Neurobiology Research Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, Maryland 21224, USA. vazint@mail.nih.gov
Jia Chen
Chun-Ting Lee
Rose Amable
William J Freed
National Institute on Drug Abuse · USNational Institutes of Health · USAlbaNova · SE

Funding

Human Embryonic Stem Cells: Characterization and Dopaminergic DifferentiationZIADA000472 · NIDA · NATIONAL INSTITUTE ON DRUG ABUSE · PI FREED, WILLIAM · 2009 to 2015
$7.7M
Human Embryonic Stem Cells:Characterization/DopaminergicZ01DA000472 · NIDA · NATIONAL INSTITUTE ON DRUG ABUSE · PI FREED, WILLIAM · 2004 to 2008
$1.8M
Intramural NIH HHS Z01 DA000472
6 · The paper itself

Abstract

Producing dopaminergic (DA) neurons is a major goal of human embryonic stem cell (hESC) research. DA neurons can be differentiated from hESC by coculture with the mouse PA6 stromal cell line; this differentiation-inducing effect is termed stromal-derived inducing activity (SDIA). The molecular and biochemical nature of SDIA is, however, unknown. Various studies have suggested that SDIA involves either a fixation-resistant component located on the PA6 cell surface or factors secreted into the medium by PA6 cells. To address this question, hESC were cocultured with PA6 cells for 12 days and then further differentiated with sonic hedgehog homolog, fibroblast growth factor-8, and glial cell line-derived neurotrophic factor. After 18 days, 34% of cells were tyrosine hydroxylase (TH)+. When PA6 cells were fixed or irradiated, the number of TH+ cells was decreased by threefold, whereas mitomycin-c treatment of feeder cells decreased the number of TH+ cells by 32%. The neural-inducing effect of PA6 cells, as monitored by beta-III-tubulin expression, was minimally affected by mitomycin-c treatment or fixation but was decreased 50% by irradiation. Medium conditioned by PA6 cells was ineffective in differentiating TH+ cells when used alone. Conditioned medium combined with heparin and/or fixed PA6 cells produced TH+ cell differentiation, although less effectively than PA6 cell coculture. Thus, PA6 cell surface activity is required for neural differentiation of hESC, but secreted factors are required for the specific DA neuron-inducing effect. Disclosure of potential conflicts of interest is found at the end of this article.

Indexed as

AnimalsCell Culture TechniquesCell DifferentiationCoculture TechniquesCulture MediaDopamineEmbryonic Stem CellsHumansImmunohistochemistryMiceNeuronsStromal CellsCulture MediaDopamine

Identifiers

PMID18388303
PMCPMC2430870
OpenAlexW1968009280

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.