Evidence map›Paper›PMID 28614291›Full record

ArticleMedical science monitor : international medical journal of experimental and clinical research2017

CLDN1 Increases Drug Resistance of Non-Small Cell Lung Cancer by Activating Autophagy via Up-Regulation of ULK1 Phosphorylation.

Zhenhuan Zhao, Jing Li, Yan Jiang, Wen Xu, Xin Li, Weili Jing

Open access · hybridAbstract read
In one paragraph

Article in Medical science monitor : international medical journal of experimental and clinical research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

36 citing papers in PubMed, 48 citations in OpenAlex.

  1. Article
  2. Review
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  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. CLDN6 induces chemoresistance through protective autophagy in breast cancer.International journal of biological sciences · 2025
    Article
  10. Article
  11. Review
  12. Claudins in Cancer: A Current and Future Therapeutic Target.International journal of molecular sciences · 2024
    Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. MCancer science · 2022
    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

6 authors at 2 institutions in 1 country.

Zhenhuan ZhaoDepartment of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China (mainland).
Jing LiDepartment of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China (mainland).
Yan JiangIntensive Care Unit, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China (mainland).
Wen XuDepartment of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China (mainland).
Xin LiDepartment of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China (mainland).
Weili JingIntensive Care Unit, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China (mainland).
Qingdao University · CNAffiliated Hospital of Qingdao University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND The aim of this study was to investigate the expression of CLDN1 in non-small cell lung cancer (NSCLC) and its mechanism of action in cisplatin resistance. MATERIAL AND METHODS A total of 55 patients with NSCLC admitted to our hospital between October 2013 and October 2015 were included. NSCLC tissues and tumor-adjacent tissues (≥5 cm from tumor edge) were collected. Among the 55 patients, 37 had adenocarcinoma and 18 had squamous cell carcinoma. Quantitative real-time polymerase chain reaction was used to determine mRNA expression, and protein expression was examined using Western blotting. CCK-8 assay was used to determine cell proliferation and Transwell assay was used to detect migration and invasion of the cells. Confocal microscopy was used to observe autophagosomes. RESULTS Increased CLDN1 expression promoted the development and metastasis of NSCLC. CLDN1 expression in A549/CDDP cells was up-regulated at both transcriptional and translational levels. Reduced CLDN1 expression decreased the drug resistance, proliferation, migration, and invasion abilities of A549/CDDP cells. Decreased CLDN1 expression promoted the apoptosis of A549/CDDP cells. CLDN1 enhanced CDDP drug resistance of A549 cells by activating autophagy. CLDN1 promoted the autophagy of A549 cells by up-regulating the phosphorylation level of ULK1. CONCLUSIONS The present study demonstrates that expression of CLDN1 in NSCLC is up-regulated and it is correlated with clinicopathological features. CLDN1 activates autophagy through up-regulation of ULK1 phosphorylation and promotes drug resistance of NSCLC cells to CDDP.

Indexed as

AutophagyDrug Resistance, NeoplasmUp-RegulationA549 CellsApoptosisAutophagy-Related Protein-1 HomologCarcinoma, Non-Small-Cell LungCell MovementCell ProliferationCisplatinClaudin-1Gene Expression Regulation, NeoplasticGene SilencingHumansInhibitory Concentration 50Intracellular Signaling Peptides and ProteinsAutophagy-Related Protein-1 HomologCisplatinClaudin-1CLDN1 protein, humanIntracellular Signaling Peptides and ProteinsRNA, MessengerULK1 protein, human

Identifiers

PMID28614291
PMCPMC5479443
OpenAlexW2625409927

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.