Evidence map›Paper›PMID 25123458›Full record

ArticleWorld journal of surgical oncology2014

PPM1D silencing by RNA interference inhibits the proliferation of lung cancer cells.

Chen Zhang, Yuanzhuo Chen, Mingsong Wang, Xianzhen Chen, Yongxin Li, E Song, Xiaoqing Liu, Sekwon Kim, Hu Peng

Open access · goldAbstract read
In one paragraph

Article in World journal of surgical oncology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
0.9field-weighted citation impact, top 27% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. The role of PPM1D in cancer and advances in studies of its inhibitors.Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2020
    Pooled it
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  8. Novel delivery approaches for cancer therapeutics.Journal of controlled release : official journal of the Controlled Release Society · 2015
    Review
  9. PPM1D overexpression predicts poor prognosis in non-small cell lung cancer.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2015
    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

9 authors at 4 institutions in 2 countries.

Chen Zhang
Yuanzhuo Chen
Mingsong Wang
Xianzhen Chen
Yongxin Li
E Song
Xiaoqing Liu
Sekwon KimShanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China. sknkim@pknu.ac.kr.
Hu Peng
Shanghai Tenth People's Hospital · CNPukyong National University · KRSecond Affiliated Hospital of Soochow University · CNXinHua Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPPM1D (protein phosphatase, Mg2+/Mn2+ dependent, 1D) has been reported to be involved in multiple human tumors. This study was designed to investigate the functional role of PPM1D in lung cancer cells.

methodsExpression levels of PPM1D were analyzed in A549 and H1299 cells by real-time PCR and Western blotting. Lentivirus-mediated short hairpin RNA (shRNA) was used to knock down PPM1D expression in both cell lines. The effects of PPM1D on lung cancer cell growth were investigated by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide), colony formation and flow cytometry assays.

resultsKnockdown of PPM1D in lung cancer cells resulted in decreased cell proliferation and impaired colony formation ability. Moreover, flow cytometry analysis showed that knockdown of PPM1D arrested cell cycle at the G0/G1 phase. Furthermore, PPM1D silencing downregulated the expression of cyclin B1 in H1299 cells. Therefore, it is reasonable to speculate that the mechanisms by which PPM1D knockdown alleviates cell growth may be partly via the induction of cell cycle arrest due to the suppression of cyclin B1.

conclusionsThese results suggest that PPM1D silencing by RNA interference (RNAi) may be a potential therapeutic approach for the treatment of lung cancer.

Indexed as

Cell ProliferationGene SilencingApoptosisBlotting, WesternCell CycleColony-Forming Units AssayFlow CytometryHumansLung NeoplasmsPhosphoprotein PhosphatasesProtein Phosphatase 2CReal-Time Polymerase Chain ReactionReverse Transcriptase Polymerase Chain ReactionRNA, MessengerRNA, Small InterferingTumor Cells, CulturedPhosphoprotein PhosphatasesPPM1D protein, humanProtein Phosphatase 2CRNA, MessengerRNA, Small Interfering

Identifiers

PMID25123458
PMCPMC4155113
OpenAlexW2118013358

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.