Evidence map›Paper›PMID 34209135›Full record

ArticleInternational journal of molecular sciences2021

Metformin Protects against Radiation-Induced Acute Effects by Limiting Senescence of Bronchial-Epithelial Cells.

Christine Hansel, Samantha Barr, Alina V Schemann, Kirsten Lauber, Julia Hess, Kristian Unger, Horst Zitzelsberger, Verena Jendrossek, Diana Klein

Open access · goldAbstract read
In one paragraph

Article in International journal of molecular sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

22 citing papers in PubMed, 31 citations in OpenAlex.

  1. Effects of Fractionated Low Dose Ionizing Radiation on Cellular Senescence in Mouse Lung Tissue.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  2. Review
  3. Hallmarks of the ageing lung: 10 years later.The European respiratory journal · 2026
    Review
  4. Article
  5. Review
  6. Article
  7. Observational
  8. Article
  9. The vascular endothelium as decision maker in lung injury.Frontiers in cell and developmental biology · 2025
    Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Cellular Senescence and Frailty in Transplantation.Current transplantation reports · 2023
    Article
  16. Review
  17. Article
  18. Review
  19. Review
  20. 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 2 institutions in 1 country.

Christine HanselInstitute of Cell Biology (Cancer Research), University Hospital, Essen, University of Duisburg-Essen, 45122 Essen, Germany.
Samantha BarrInstitute of Cell Biology (Cancer Research), University Hospital, Essen, University of Duisburg-Essen, 45122 Essen, Germany.ORCID 0000-0003-3956-3620
Alina V SchemannInstitute of Cell Biology (Cancer Research), University Hospital, Essen, University of Duisburg-Essen, 45122 Essen, Germany.
Kirsten LauberDepartment of Radiation Oncology, University Hospital, LMU München, 80539 Munich, Germany.
Julia HessClinical Cooperation Group 'Personalized Radiotherapy in Head and Neck Cancer' Helmholtz Zentrum München, German Research Center for Environmental Health GmbH, 85764 Neuherberg, Germany.ORCID 0000-0001-9860-1426
Kristian UngerClinical Cooperation Group 'Personalized Radiotherapy in Head and Neck Cancer' Helmholtz Zentrum München, German Research Center for Environmental Health GmbH, 85764 Neuherberg, Germany.
Horst ZitzelsbergerClinical Cooperation Group 'Personalized Radiotherapy in Head and Neck Cancer' Helmholtz Zentrum München, German Research Center for Environmental Health GmbH, 85764 Neuherberg, Germany.
Verena JendrossekInstitute of Cell Biology (Cancer Research), University Hospital, Essen, University of Duisburg-Essen, 45122 Essen, Germany.ORCID 0000-0003-1058-2107
Diana KleinInstitute of Cell Biology (Cancer Research), University Hospital, Essen, University of Duisburg-Essen, 45122 Essen, Germany.ORCID 0000-0002-1770-443X
University of Duisburg-Essen · DEHelmholtz Zentrum München · DE

Funding

Bundesministerium für Bildung und Forschung 02NUK047DDeutsche Forschungsgemeinschaft GRK1739/2
6 · The paper itself

Abstract

Radiation-induced damage to normal lung parenchyma remains a dose-limiting factor in thorax-associated radiotherapy (RT). Severe early and late complications with lungs can increase the risk of morbidity in cancer patients after RT. Herein, senescence of lung epithelial cells following RT-induced cellular stress, or more precisely the respective altered secretory profile, the senescence-associated secretory phenotype (SASP), was suggested as a central process for the initiation and progression of pneumonitis and pulmonary fibrosis. We previously reported that abrogation of certain aspects of the secretome of senescent lung cells, in particular, signaling inhibition of the SASP-factor Ccl2/Mcp1 mediated radioprotection especially by limiting endothelial dysfunction. Here, we investigated the therapeutic potential of a combined metformin treatment to protect normal lung tissue from RT-induced senescence and associated lung injury using a preclinical mouse model of radiation-induced pneumopathy. Metformin treatment efficiently limited RT-induced senescence and SASP expression levels, thereby limiting vascular dysfunctions, namely increased vascular permeability associated with increased extravasation of circulating immune and tumor cells early after irradiation (acute effects). Complementary in vitro studies using normal lung epithelial cell lines confirmed the senescence-limiting effect of metformin following RT finally resulting in radioprotection, while fostering RT-induced cellular stress of cultured malignant epithelial cells accounting for radiosensitization. The radioprotective action of metformin for normal lung tissue without simultaneous protection or preferable radiosensitization of tumor tissue might increase tumor control probabilities and survival because higher radiation doses could be used.

Indexed as

BronchiEpithelial CellsRadiation Injuries, ExperimentalAnimalsCellular SenescenceMetforminMiceRadiation-Protective AgentsMetforminRadiation-Protective Agentslung injurymetforminnormal tissue toxicitypremature senescencepulmonary diseaseradiotherapysenescence-associated secretory phenotype

Identifiers

PMID34209135
PMCPMC8268757
OpenAlexW3174782243

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.