The Role of Activated Stromal Cells in Fibrotic Foci Formation and Reversion
Author Information
Author(s): Basalova Nataliya Andreevna, Vigovskiy Maksim Alexandrovich, Popov Vladimir Sergeevich, Lagereva Evgeniya Alexandrovna, Grigorieva Olga Alexandrovna, Efimenko Anastasia Yuryevna
Primary Institution: Centre for Regenerative Medicine, Medical Research and Educational Institute, Lomonosov Moscow State University, Moscow, Russia
Hypothesis
Activated stromal cells marked by fibroblast activated protein alpha (FAPα) are key to fibrotic focus formation and resolution.
Conclusion
Activated stromal cells play a crucial role in the initiation, progression, and reversion of fibrosis.
Supporting Evidence
- FAPα+ cells appear early in the lungs after injury.
- FAPα+ cells are involved in the formation of myofibroblast pools.
- During fibrosis reversion, specific structured foci formed by CD90+FAPα+ cells were observed.
- FAPα+ cells are crucial for ECM remodeling.
- Macrophages colocalize with FAPα+ cells, indicating mutual influence.
Takeaway
This study shows that certain cells in the lungs help create and break down scar tissue, which is important for understanding and treating lung diseases.
Methodology
The study used a murine model of bleomycin-induced lung fibrosis to evaluate the dynamics of fibrotic focus formation and the role of activated stromal cells.
Limitations
The study is based on an animal model, which may not fully replicate human conditions.
Participant Demographics
Male C57BL6/N mice, 2 months old at the start of the experiment.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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