Evidence map›Paper›PMID 21028992›Full record

ArticleStem cells and development2011

Akt increases sox2 expression in adult hippocampal neural progenitor cells, but increased sox2 does not promote proliferation.

Joseph Peltier, Anthony Conway, Albert J Keung, David V Schaffer

Open access · greenAbstract read
In one paragraph

Article in Stem cells and development, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
0.4field-weighted citation impact, top 34% 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

19 citing papers in PubMed, 27 citations in OpenAlex.

  1. Review
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  7. Article
  8. Caffeine Compromises Proliferation of Human Hippocampal Progenitor Cells.Frontiers in cell and developmental biology · 2020
    Article
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  13. Review
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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

4 authors at 1 institution in 1 country.

Joseph PeltierDepartment of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720-3220, USA.
Anthony Conway
Albert J Keung
David V Schaffer
University of California, Berkeley · US

Funding

Bioactive Materials for Stem Cell ControlR21EB007295 · NIBIB · RENSSELAER POLYTECHNIC INSTITUTE · PI KANE, RAVI S. · 2008 to 2009
$446k
NIBIB NIH HHS EB007295
6 · The paper itself

Abstract

Multiple extracellular factors have been shown to modulate adult hippocampal neural progenitor cell (NPC) proliferation and self-renewal, and we have previously shown that Akt is an important mediator of the effects of these extracellular factors on NPC proliferation and differentiation. However, very little work has investigated how and whether Akt is involved in maintaining the multipotency of these cells. Here we demonstrate that Akt promotes expression of Sox2, a core transcription factor important for the self-renewal of NPCs. Retroviral-mediated overexpression of wild-type Akt increased Sox2 protein expression, particularly under conditions that promote cell differentiation, whereas Akt inhibition decreased Sox2. Similarly, quantitative reverse transcription (RT)-PCR in differentiating cultures indicated that Akt rescued Sox2 mRNA to levels present under conditions that promote cell proliferation. Additionally, pharmacological inhibition of Akt did not affect Sox2 protein levels in cells constitutively expressing Sox2 from a retroviral vector, indicating that Akt does not affect Sox2 protein stability. Further, in contrast to Akt overexpression, Sox2 overexpression does not increase NPC viable cell number or proliferation yet does inhibit differentiation. Collectively, these results indicate that Akt promotes cell proliferation and maintenance of a multipotent state via two downstream paths.

Indexed as

Cell ProliferationAnimalsBlotting, WesternCell DifferentiationFemaleFluorescent Antibody TechniqueGenetic VectorsHEK293 CellsHippocampusHumansNeural Stem CellsPhosphorylationProtein StabilityProto-Oncogene Proteins c-aktRatsRats, Inbred F344Akt1 protein, ratProto-Oncogene Proteins c-aktRibonucleosidesRNA, MessengerSox2 protein, ratSOXB1 Transcription Factorstriciribine

Identifiers

PMID21028992
PMCPMC3121932
OpenAlexW2135363550

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.