Evidence map›Paper›PMID 21477379›Full record

ArticleJournal of translational medicine2011

Elevated expression of CDK4 in lung cancer.

Aibing Wu, Bin Wu, Jinsong Guo, Weiren Luo, Dong Wu, Huiling Yang, Yan Zhen, Xiaoli Yu, Hao Wang, Ying Zhou and 3 more

Open access · goldAbstract read
In one paragraph

Article in Journal of translational medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed
3.1field-weighted citation impact, top 7% 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

63 citing papers in PubMed, 96 citations in OpenAlex.

  1. Trial
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  8. Slower CDK4 and faster CDK2 activation in the cell cycle.Structure (London, England : 1993) · 2024
    Article
  9. Article
  10. Transcriptome Analysis in Mexican Adults with Acute Lymphoblastic Leukemia.International journal of molecular sciences · 2024
    Article
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  12. Review
  13. Article
  14. The Triple Crown: NO, CO, and HPharmacology & therapeutics · 2023
    Review
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  16. Review
  17. Review
  18. Review
  19. CDK4/6 inhibitor resistance mechanisms and treatment strategies (Review).International journal of molecular medicine · 2022
    Review
  20. Article

3 more citing papers are in PubMed but not listed here.

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

13 authors at 3 institutions in 1 country.

Aibing WuCancer Research Institute of Southern Medical University, 510515 Guangzhou, PR China.
Bin Wu
Jinsong Guo
Weiren Luo
Dong Wu
Huiling Yang
Yan Zhen
Xiaoli Yu
Hao Wang
Ying Zhou
Zhen Liu
Weiyi Fang
Zhixiong Yang
Southern Medical University · CNGuangdong Medical College · CNGuangzhou Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe aim of the present study was to analyze the expression of Cyclin-dependent kinase 4 (CDK4) in lung cancer and its correlation with clinicopathologic features. Furthermore, the involvement of CDK4-mediated cell cycle progression and its molecular basis were investigated in the pathogenesis of lung cancer.

methodsUsing immunohistochemistry analysis, we analyzed CDK4 protein expression in 89 clinicopathologically characterized lung cancer patients (59 males and 30 females) with ages ranging from 36 to 78 years and compared them to 23 normal lung tissues. Cases with cytoplasmic and nuclear CDK4 immunostaining score values greater than or equal to 7 were regarded as high expression while scores less than 7 were considered low expression. The correlation between the expression level of CDK4 and clinical features was analyzed. Furthermore, we used lentiviral-mediated shRNA to suppress the expression of CDK4 and investigate its function and molecular mechanism for mediating cell cycle progression.

resultsThe expression level of CDK4 protein was significantly increased in lung cancer tissues compared to normal tissues (P < 0.001). In addition, high levels of CDK4 protein were positively correlated with the status of pathology classification (P = 0.047), lymph node metastasis (P = 0.007), and clinical stage (P = 0.004) of lung cancer patients. Patients with higher CDK4 expression had a markedly shorter overall survival time than patients with low CDK4 expression. Multivariate analysis suggested the level of CDK4 expression was an independent prognostic indicator (P < 0.001) for the survival of patients with lung cancer. Use of lentiviral-mediated shRNA to inhibit the expression of CDK4 in lung cancer cell line A549 not only inhibited cell cycle progression, but also dramatically suppressed cell proliferation, colony formation, and migration. Furthermore, suppressing CDK4 expression also significantly elevated the expression of cell cycle regulator p21

conclusionOverexpressed CDK4 is a potential unfavorable prognostic factor and mediates cell cycle progression by regulating the expression of p21 in lung cancer.

Indexed as

Cell CycleCell Line, TumorCell MovementCell ProliferationCyclin-Dependent Kinase 4Cyclin-Dependent Kinase Inhibitor p21Down-RegulationFemaleGene Expression Regulation, NeoplasticGene Knockdown TechniquesHumansImmunohistochemistryLungLung NeoplasmsMaleMultivariate AnalysisCDK4 protein, humanCyclin-Dependent Kinase 4Cyclin-Dependent Kinase Inhibitor p21

Identifiers

PMID21477379
PMCPMC3094221
OpenAlexW2030900222

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LicenceCC BY
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Registered trials

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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.