Evidence map›Paper›PMID 9166412›Full record

ArticleThe Journal of cell biology1997

Phosphatidylinositol 3-kinase is a negative regulator of cellular differentiation.

A Ptasznik, G M Beattie, M I Mally, V Cirulli, A Lopez, A Hayek

Abstract read
In one paragraph

Article in The Journal of cell biology, 1997. 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
–field-weighted citation impact
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.

  1. Review
  2. Stem Cell Therapy for the Management of Type 1 Diabetes: Advances and Perspectives.Endocrine, metabolic & immune disorders drug targets · 2024
    Review
  3. Optimizing Generation of Stem Cell-Derived Islet Cells.Stem cell reviews and reports · 2022
    Review
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Regulation of pancreatic duct cell differentiation by phosphatidylinositol-3 kinase.Biochemical and biophysical research communications · 2008
    Article
  11. Article
  12. Stem cell therapy to treat diabetes mellitus.The review of diabetic studies : RDS · 2008
    Article
  13. Article
  14. Article
  15. Article
  16. Growth inhibitors promote differentiation of insulin-producing tissue from embryonic stem cells.Proceedings of the National Academy of Sciences of the United States of America · 2002
    Article
  17. Article
  18. Article
  19. Article
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

6 authors.

A PtasznikThe Whittier Institute for Diabetes and Endocrinology, Department of Pediatrics, University of California at San Diego, School of Medicine, La Jolla, California 92037, USA.
G M Beattie
M I Mally
V Cirulli
A Lopez
A Hayek

Funding

VOLUMETRIC CONTOUR-BASED SURFACE RECONSTRUCTIONP41RR004050 · NCRR · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI PASQUALE, ELENA B · 1989 to 2011
$28.0M
NCRR NIH HHS P41 RR004050NCRR NIH HHS RR 04050
6 · The paper itself

Abstract

Phosphatidylinositol 3-kinase (PI3K) has been shown to be an important mediator of intracellular signal transduction in mammalian cells. We show here, for the first time, that the blockade of PI3K activity in human fetal undifferentiated cells induced morphological and functional endocrine differentiation. This was associated with an increase in mRNA levels of insulin, glucagon, and somatostatin, as well as an increase in the insulin protein content and secretion in response to secretagogues. Blockade of PI3K also increased the proportion of pluripotent precursor cells coexpressing multiple hormones and the total number of terminally differentiated cells originating from these precursor cells. We examined whether any of the recently described modulators of endocrine differentiation could participate in regulating PI3K activity in fetal islet cells. The activity of PI3K was inversely correlated with the hepatocyte growth factor/scatter factor-induced downregulation or nicotinamideinduced upregulation of islet-specific gene expression, giving support to the role of PI3K, as a negative regulator of endocrine differentiation. In conclusion, our results provide a mechanism for the regulation of hormone-specific gene expression during human fetal neogenesis. They also suggest a novel function for PI3K, as a negative regulator of cellular differentiation.

Indexed as

AndrostadienesCell DifferentiationCell DivisionChromonesDNAEnzyme InhibitorsFetusGlucagonHepatocyte Growth FactorHumansInsulinInsulin SecretionIslets of LangerhansMorpholinesNiacinamidePancreas2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-oneAndrostadienesChromonesDNAEnzyme InhibitorsGlucagonHepatocyte Growth FactorInsulinMorpholinesNiacinamidePhosphatidylinositol 3-KinasesPhosphotransferases (Alcohol Group Acceptor)SomatostatinWortmannin

Identifiers

PMID9166412
PMCPMC2136228

What OpenQuestion holds

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LicenceCC BY-NC-SA
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.