Senolytics and PM2.5-induced cell and vascular dysfunction in mice
In mice, concentrated ambient PM2.5 activated the endothelium and induced senescence in blood mononuclear cells and endothelial progenitor cells; the senolytics Dasatinib and Quercetin reversed these senescence markers and limited endothelial activation. [1]
Automatic summary · not editorially reviewed
The key findings
Mice exposed to concentrated ambient PM2.5 showed more leukocyte rolling on and adhesion to the intact vasculature than control mice inhaling filtered air. [1]
Dasatinib and Quercetin reversed CAP-induced senescence of mononuclear cells and endothelial progenitor cells, with reduced β-galactosidase activity and SASP gene expression. [1]
The authors suggest senolytic treatment may be efficacious against adverse cardiovascular outcomes in those chronically exposed to high PM2.5 levels. [1]
The source at a glance
- Study type / format
- Preclinical mouse study (abstract)
- Population / context
- C57BL/6J mice exposed to concentrated ambient PM2.5 versus control mice inhaling filtered air; mouse mononuclear cells and endothelial progenitor cells.
- Summary based on
- Study abstract
- Original publication
- August 13, 2026
Mice breathing concentrated PM2.5 versus filtered air
The abstract describes C57BL/6J mice exposed to concentrated ambient PM2.5 (CAP) compared with control mice inhaling filtered air. In vivo, CAP-exposed mice showed endothelial activation: more leukocytes rolled on and adhered to the intact vasculature. The authors frame this as evidence that PM2.5 acts in early atherogenesis by inducing endothelial activation and leukocyte recruitment.
Supporting source [1]
Dasatinib plus Quercetin reversed senescence markers in mice
CAP exposure also induced senescence of peripheral blood mononuclear cells (MNCs) and endothelial progenitor cells (EPCs). Treatment with the senolytics Dasatinib and Quercetin (DQ), which eliminate senescent cells, reversed this CAP-induced senescence in both cell types, shown by reduced β-galactosidase activity and lower expression of genes of the senescence-associated secretory phenotype (SASP). DQ also reversed CAP-induced defects in in vitro EPC tube-forming capacity and limited in vivo endothelial activation.
Supporting source [1]
Abstract-only mouse evidence and suggested senolytic use
The authors call these results strong evidence for a role of PM2.5 in early atherogenesis and suggest senolytic treatment may be efficacious against adverse cardiovascular outcomes in those chronically exposed to high PM2.5 levels. This is a suggestion, not a demonstrated human benefit. The record is an abstract; the full text was not reviewed, so design details, sample sizes and follow-up are not reported here. Findings come from mice and cell assays, not from human outcome studies.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. Details of design, sample size and follow-up are not reported here. Findings are from mice and cell assays, and the suggested senolytic benefit for chronically exposed people is not demonstrated.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Gomes D, McFall SA, Chen N, Zhao J, Srivastava S, Conklin DJ, O'Toole TE. · europepmc.org · August 13, 2026