Evidence map›Paper›PMID 9819398›Full record

ArticleMolecular and cellular biology1998

A function for phosphatidylinositol 3-kinase beta (p85alpha-p110beta) in fibroblasts during mitogenesis: requirement for insulin- and lysophosphatidic acid-mediated signal transduction.

S Roche, J Downward, P Raynal, S A Courtneidge

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 1998. 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, 127 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. The Biological Role of PI3K Pathway in Lung Cancer.Pharmaceuticals (Basel, Switzerland) · 2012
    Article
  12. Targeting the PI3K pathway for cancer therapy.Future medicinal chemistry · 2012
    Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. PI3K: from the bench to the clinic and back.Current topics in microbiology and immunology · 2010
    Review
  19. Phosphatidylinositol 3-kinase: the oncoprotein.Current topics in microbiology and immunology · 2010
    Review
  20. Review
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 4 institutions in 5 countries.

S RocheCNRS EP612 Faculté de Pharmacie, 34060 Montpellier, France. serger@crbm.cnrsmop.fr
J Downward
P Raynal
S A Courtneidge
Centre National de la Recherche Scientifique · FRInserm · FRMaxygen (United States) · USWorld Cancer Research Fund International · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We have previously shown that phosphatidylinositol 3-kinase alpha (PI 3-Kalpha) (p85alpha-p110alpha) is required for DNA synthesis induced by various growth factors (S. Roche, M. Koegl, and S. A. Courtneidge, Proc. Natl. Acad. Sci. USA 91:9185-9189, 1994) in fibroblasts. In the present study, we have investigated the function of PI 3-Kbeta (p85alpha-p110beta) during mitogenesis. By using antibodies specific to p110beta we showed that PI 3-Kbeta is expressed in NIH 3T3 cells. PI 3-Kbeta and PI 3-Kalpha have common features: PI 3-Kbeta is tightly associated with a protein serine kinase that phosphorylates p85alpha, it interacts with the Src-middle T antigen complex and the activated platelet-derived growth factor (PDGF) receptor in fibroblasts in vivo, and it becomes tyrosine phosphorylated after PDGF stimulation. PI 3-Kbeta was also activated in Swiss 3T3 and Cos7 cells stimulated with lysophosphatidic acid (LPA), a mitogen that interacts with a heterotrimeric G protein-coupled receptor. In contrast PI 3-Kalpha was activated to a lesser extent in these cells. Microinjection of neutralizing antibodies specific for p110beta into quiescent fibroblasts inhibited DNA synthesis induced by both insulin and LPA but poorly affected PDGF receptor signaling. Therefore, PI 3-Kbeta plays an important role in transmitting the mitogenic response induced by some, but not all, growth factors. Finally, we show that while oncogenic V12Ras interacts with type I PI 3-Ks, it could induce DNA synthesis in the absence of active PI 3-Kalpha and PI 3-Kbeta, suggesting that Ras uses other effectors for DNA synthesis.

Indexed as

3T3 CellsAndrostadienesAnimalsAntibodiesDNAEnzyme ActivationFibroblastsGenes, rasInsulinLysophospholipidsMiceMitogensPhosphatidylinositol 3-KinasesPhosphorylationPrecipitin TestsProtein Serine-Threonine KinasesAndrostadienesAntibodiesDNAInsulinLysophospholipidsMitogensPhosphatidylinositol 3-KinasesProtein Serine-Threonine KinasesProtein-Tyrosine KinasesReceptors, Platelet-Derived Growth FactorWortmannin

Identifiers

PMID9819398
PMCPMC109293
OpenAlexW1856121658

What Socratic 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 Socratic graph.