Evidence map›Paper›PMID 22322860›Full record

ArticleCell death and differentiation2012

Retinoblastoma tumor-suppressor protein phosphorylation and inactivation depend on direct interaction with Pin1.

F Rizzolio, C Lucchetti, I Caligiuri, I Marchesi, M Caputo, A J Klein-Szanto, L Bagella, M Castronovo, A Giordano

Expression of concernOpen access · bronzeAbstract read
In one paragraph

Article in Cell death and differentiation, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It carries an expression of concern. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing 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

49 citing papers in PubMed, 75 citations in OpenAlex.

  1. Review
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  5. Expression and significance of pin1 in the wound healing.Archives of dermatological research · 2024
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 2 countries.

F RizzolioSbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, PA, USA.
C Lucchetti
I Caligiuri
I Marchesi
M Caputo
A J Klein-Szanto
L Bagella
M Castronovo
A Giordano
Temple University · USUniversity of Siena · ITFox Chase Cancer Center · USUniversity of Sassari · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Inactivation of the retinoblastoma protein (pRb) by phosphorylation triggers uncontrolled cell proliferation. Accordingly, activation of cyclin-dependent kinase (CDK)/cyclin complexes or downregulation of CDK inhibitors appears as a common event in human cancer. Here we show that Pin1 (protein interacting with NIMA (never in mitosis A)-1), a peptidylprolyl isomerase involved in the control of protein phosphorylation, is an essential mediator for inactivation of the pRb. Our results indicate that Pin1 controls cell proliferation by altering pRb phosphorylation without affecting CDK and protein phosphatase 1 and 2 activity. We demonstrated that Pin1 regulates tumor cell proliferation through direct interaction with the spacer domain of the pRb protein, and allows the interaction between CDK/cyclin complexes and pRb in mid/late G1. Phosphorylation of pRb Ser 608/612 is the crucial motif for Pin1 binding. We propose that Pin1 selectively boosts the switch from hypo- to hyper-phosphorylation of pRb in tumor cells. In addition, we demonstrate that the CDK pathway is responsible for the interaction of Pin1 and pRb. Prospectively, our findings therefore suggest that the synergism among CDK and Pin1 inhibitors holds great promise for targeted pharmacological treatment of cancer patients, with the possibility of reaching high effectiveness at tolerated doses.

Indexed as

Cell LineCell ProliferationCyclin-Dependent KinasesCyclinsG1 PhaseHumansNIMA-Interacting Peptidylprolyl IsomerasePeptidylprolyl IsomerasePhosphorylationProtein BindingProtein Phosphatase 1Protein Phosphatase 2Retinoblastoma ProteinRNA InterferenceRNA, Small InterferingCyclin-Dependent KinasesCyclinsNIMA-Interacting Peptidylprolyl IsomerasePeptidylprolyl IsomerasePIN1 protein, humanProtein Phosphatase 1Protein Phosphatase 2Retinoblastoma ProteinRNA, Small Interfering

Identifiers

PMID22322860
PMCPMC3374078
OpenAlexW2092492689

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.