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Updated: May 11, 2026

Establishment and Validation of a Rat Model of Pulmonary Arterial Hypertension Associated with Pulmonary Fibrosis
Published on: May 23, 2025
Therapeutic Potential of microRNA Modulation in Pulmonary Arterial Hypertension
Jolyane Meloche, Roxane Paulin, Steeve Provencher
1Pulmonary Hypertension Research Group, Centre de recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Quebec, 2725 chemin Ste-Foy Y2106, Quebec (Qc), G1V 4G5, CANADA. sebastien.bonnet@criucpq.ulaval.ca.
Abstract:
MicroRNAs have emerged as key players of gene regulation during development and disease states like cancer and cardiovascular diseases. Pulmonary arterial hypertension (PAH), a vascular disease characterized by pulmonary resistance and vessel occlusion, is not spared by microRNA implication. This is not surprising since PAH shares common aberrantly activated pathways with cancers that lead to proliferation and survival of pulmonary arterial smooth muscle cells, among others, within the artery wall and narrowing the lumen. Recent studies demonstrated the role of miR-204 and miR- 206 in pulmonary artery smooth muscle cell (PASMC) proliferation. Other microRNAs, such as miR-145, miR-21 and the miR17/92 cluster, have been associated with the disrupted BMPR2 pathway. During the last couple of years, the number of studies on the role of microRNA in PAH has broadened, defining it clearly as a HOT TOPIC. This current review presents an overview of the most recent knowledge as well as future possibilities. The use of microRNA therapies is still uncertain and poorly applied in the clinical setting yet. It is still critical to increase the knowledge and the translational potential of this HOT TOPIC to make it become a HOPE TOPIC.
Insights
MicroRNAs are crucial in regulating genes in pulmonary arterial hypertension (PAH). Research highlights specific microRNAs involved in PAH, suggesting potential therapeutic avenues for this vascular disease.
Area of Science:
- Molecular Biology
- Cardiovascular Research
- Gene Regulation
Background:
- MicroRNAs (miRNAs) are key regulators of gene expression implicated in various diseases, including cancer and cardiovascular conditions.
- Pulmonary arterial hypertension (PAH) is a vascular disease characterized by increased pulmonary resistance and vessel occlusion.
- PAH shares common pathways with cancer, involving aberrant proliferation and survival of pulmonary arterial smooth muscle cells (PASMCs).
Purpose of the Study:
- To review the current understanding of microRNA involvement in pulmonary arterial hypertension (PAH).
- To highlight recent findings on specific microRNAs and their roles in PAH pathogenesis.
- To discuss future directions and therapeutic potential of microRNAs in PAH.
Main Methods:
- Literature review of recent studies on microRNAs in PAH.
- Analysis of identified microRNAs and their association with PAH pathways.
- Synthesis of current knowledge and future perspectives.
Main Results:
- Specific microRNAs, including miR-204 and miR-206, are implicated in PASMC proliferation.
- Other miRNAs like miR-145, miR-21, and the miR17/92 cluster are linked to the disrupted BMPR2 pathway in PAH.
- The role of microRNAs in PAH is a rapidly expanding and significant area of research.
Conclusions:
- MicroRNAs play a critical role in the molecular mechanisms underlying PAH.
- Further research is needed to translate microRNA knowledge into effective clinical therapies for PAH.
- MicroRNA-based therapies hold promise but require further development and validation for clinical application.
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MicroRNAs
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