Evidence map›Paper›PMID 22851137›Full record

ArticleCell stress & chaperones2013

Extracellular HSP27 acts as a signaling molecule to activate NF-κB in macrophages.

Samira Salari, Tara Seibert, Yong-Xiang Chen, Tieqiang Hu, Chunhua Shi, Xiaoling Zhao, Charles M Cuerrier, Joshua E Raizman, Edward R O'Brien

Open access · bronzeAbstract read
In one paragraph

Article in Cell stress & chaperones, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

68 citing papers in PubMed, 128 citations in OpenAlex.

  1. Trial
  2. Article
  3. Mitigating atherosclerosis: Integrating vaccines with gene targets.American heart journal plus : cardiology research and practice · 2025
    Review
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Observational
  11. Article
  12. Review
  13. Atheroprotective Aspects of Heat Shock Proteins.International journal of molecular sciences · 2023
    Review
  14. Article
  15. Review
  16. Review
  17. Article
  18. Article
  19. Review
  20. TheScience signaling · 2022
    Article

8 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

9 authors at 2 institutions in 1 country.

Samira SalariUniversity of Ottawa Heart Institute, Ottawa, ON, Canada.
Tara Seibert
Yong-Xiang Chen
Tieqiang Hu
Chunhua Shi
Xiaoling Zhao
Charles M Cuerrier
Joshua E Raizman
Edward R O'Brien
University of Ottawa · CALibin Cardiovascular Institute of Alberta · CA

Funding

Canadian Institutes of Health Research MOP 80204
6 · The paper itself

Abstract

Heat shock protein 27 (HSP27) shows attenuated expression in human coronary arteries as the extent of atherosclerosis progresses. In mice, overexpression of HSP27 reduces atherogenesis, yet the precise mechanism(s) are incompletely understood. Inflammation plays a central role in atherogenesis, and of particular interest is the balance of pro- and anti-inflammatory factors produced by macrophages. As nuclear factor-kappa B (NF-κB) is a key immune signaling modulator in atherogenesis, and macrophages are known to secrete HSP27, we sought to determine if recombinant HSP27 (rHSP27) alters NF-κB signaling in macrophages. Treatment of THP-1 macrophages with rHSP27 resulted in the degradation of an inhibitor of NF-κB, IκBα, nuclear translocation of the NF-κB p65 subunit, and increased NF-κB transcriptional activity. Treatment of THP-1 macrophages with rHSP27 yielded increased expression of a variety of genes, including the pro-inflammatory factors, IL-1β, and TNF-α. However, rHSP27 also increased the expression of the anti-inflammatory factors IL-10 and GM-CSF both at the mRNA and protein levels. Our study suggests that in macrophages, activation of NF-κB signaling by rHSP27 is associated with upregulated expression and secretion of key pro- and anti-inflammatory cytokines. Moreover, we surmise that it is the balance in expression of these mediators and antagonists of inflammation, and hence atherogenesis, that yields a favorable net effect of HSP27 on the vessel wall.

Indexed as

Signal TransductionAnimalsCell LineGranulocyte-Macrophage Colony-Stimulating FactorHSP27 Heat-Shock ProteinsHumansI-kappa B ProteinsInterleukin-10Interleukin-1betaMacrophagesMiceMutationNF-kappa BNF-KappaB Inhibitor alphaPhosphorylationProtein Structure, TertiaryGranulocyte-Macrophage Colony-Stimulating FactorHSP27 Heat-Shock ProteinsI-kappa B ProteinsInterleukin-10Interleukin-1betaNF-kappa BNF-KappaB Inhibitor alphaNFKBIA protein, humanNfkbia protein, mouseRecombinant ProteinsTranscription Factor RelATumor Necrosis Factor-alpha

Identifiers

PMID22851137
PMCPMC3508120
OpenAlexW2052072669

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.