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Unilateral Lung Volume Analysis Using Micro-CT for Enhanced Assessment of Pulmonary Fibrosis in Preclinical Models
Published on: June 20, 2025
Narrative review: fibrotic diseases: cellular and molecular mechanisms and novel therapies
Joel Rosenbloom1, Susan V Castro, Sergio A Jimenez
1Jefferson Institute of Molecular Medicine, Thomas Jefferson University, 233 South 10th Street, Room 509, Bluemle Life Science Building, Philadelphia, PA 19107-5541, USA.
Abstract:
Abnormal and exaggerated deposition of extracellular matrix is the hallmark of many fibrotic diseases, including systemic sclerosis and pulmonary, liver, and kidney fibrosis. The spectrum of affected organs, the usually progressive nature of the fibrotic process, the large number of affected persons, and the absence of effective treatment pose an enormous challenge when treating fibrotic diseases. Delineation of the central role of transforming growth factor-beta (TGF-beta) and identification of the specific cellular receptors, kinases, and other mediators involved in the fibrotic process have provided a sound basis for development of effective therapies. The inhibition of signaling pathways activated by TGF-beta represents a novel therapeutic approach for the fibrotic disorders. One of these TGF-beta pathways results in the activation of the nonreceptor tyrosine kinase cellular Abelson (c-Abl), and c-Abl inhibitors, including imatinib mesylate, diminishing the fibrogenic effects of TGF-beta. Thus, recently acquired basic knowledge about the pathogenesis of the fibrotic process has enabled the development of novel therapeutic agents capable of modifying the deleterious effects of the fibrotic diseases.
Insights
Fibrotic diseases involve excessive extracellular matrix deposition. Inhibiting transforming growth factor-beta (TGF-beta) pathways, specifically those activating cellular Abelson (c-Abl) kinase, offers a novel therapeutic strategy for these challenging conditions.
Area of Science:
- Fibrosis research
- Molecular biology
- Drug discovery
Background:
- Fibrotic diseases are characterized by abnormal extracellular matrix deposition, affecting organs like lungs, liver, and kidneys.
- These progressive conditions present significant treatment challenges due to limited effective therapies.
- Transforming growth factor-beta (TGF-beta) plays a central role in fibrotic pathogenesis.
Purpose of the Study:
- To explore novel therapeutic approaches for fibrotic disorders.
- To investigate the role of TGF-beta signaling in fibrosis.
- To identify potential drug targets within the TGF-beta pathway.
Main Methods:
- Investigated the TGF-beta signaling pathway.
- Focused on the activation of cellular Abelson (c-Abl) tyrosine kinase.
- Evaluated the efficacy of c-Abl inhibitors, such as imatinib mesylate.
Main Results:
- Transforming growth factor-beta (TGF-beta) signaling activates cellular Abelson (c-Abl) kinase.
- Inhibition of c-Abl kinase diminishes the fibrogenic effects of TGF-beta.
- This pathway modulation shows potential in reducing fibrotic processes.
Conclusions:
- Targeting TGF-beta activated pathways, specifically c-Abl, is a promising therapeutic strategy for fibrotic diseases.
- Basic research into fibrotic pathogenesis enables the development of novel treatments.
- Agents like imatinib mesylate demonstrate potential in mitigating fibrotic disease effects.
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