Evidence map›Paper›PMID 12761496›Full record

ArticleOncogene2003

Paclitaxel increases p21 synthesis and accumulation of its AKT-phosphorylated form in the cytoplasm of cancer cells.

Christophe Héliez, Laurent Baricault, Nadia Barboule, Annie Valette

Abstract read
PubMed Publisher
In one paragraph

Article in Oncogene, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

34 citing papers in PubMed, 65 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

4 authors at 3 institutions in 1 country.

Christophe HéliezLBCMCP, UMR CNRS 5088, IFR 109, Université Paul Sabatier, 31062 Toulouse, France.
Laurent Baricault
Nadia Barboule
Annie Valette
Laboratoire de Biologie Cellulaire et Moléculaire du Contrôle de la Prolifération · FRCentre National de la Recherche Scientifique · FRUniversité Toulouse III - Paul Sabatier · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

CKI p21 is a regulator of cellular responses to microtubule damage induced by drugs such as paclitaxel (PTX). It mediates the G1 4N arrest postactivation of the spindle assembly checkpoint and protects cancer cells against PTX-induced cytotoxicity. We demonstrated here that low doses of PTX that are unable to activate the spindle assembly checkpoint, upregulate p21 by a p53-dependent pathway and induce its translocation to the cytoplasm. This cytoplasmic accumulation of p21 resulted from an AKT-dependent p21 phosphorylation leading to an association of p21 with 14-3-3. Furthermore, the cytoplasmic p21 accumulation observed in PTX-treated cells was inhibited by LY 294002, a specific PI-3 kinase inhibitor or by the expression of a dominant-negative AKT mutant. However, the kinase activity of AKT was unchanged in PTX-treated cells, suggesting that low doses of PTX could regulate p21 phosphorylation via inhibition of its dephosphorylation. As a functional consequence, we found that cytoplasmic accumulation of the phosphorylated form of p21 prevents the inhibitory effect of p21, enabling these cells to escape to the p53-dependent Gl/S and G2/M checkpoints.

Indexed as

Protein Serine-Threonine KinasesAntineoplastic Agents, PhytogenicCell CycleCell DivisionCyclin-Dependent Kinase Inhibitor p21CyclinsCytoplasmDose-Response Relationship, DrugHumansNeoplasmsPaclitaxelPhosphorylationProto-Oncogene ProteinsProto-Oncogene Proteins c-aktSpindle ApparatusTransfectionAKT1 protein, humanAntineoplastic Agents, PhytogenicCDKN1A protein, humanCyclin-Dependent Kinase Inhibitor p21CyclinsPaclitaxelProtein Serine-Threonine KinasesProto-Oncogene ProteinsProto-Oncogene Proteins c-aktTumor Suppressor Protein p53

Identifiers

PMID12761496
OpenAlexW2069348059

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.