ArticleCell biology and toxicology2024
Exosomes enriched by miR-429-3p derived from ITGB1 modified Telocytes alleviates hypoxia-induced pulmonary arterial hypertension through regulating Rac1 expression.
Article in Cell biology and toxicology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- From nanotechnology to immunomodulation: emerging strategies targeting macrophages in high altitude pulmonary hypertension.Journal of nanobiotechnology · 2026Review
- The Role of the Apelin Receptor in the Pathophysiology of Pulmonary Arterial Hypertension.Cells · 2026Review
- Targeting Inflammation-Oxidative Stress Crosstalk: Advances and Challenges in Nanocarrier-Based Interventional Strategies for Pulmonary Arterial Hypertension.International journal of nanomedicine · 2026Review
- Recent Advances in the Application of Cucurbitacin B as an Anticancer Agent.International journal of molecular sciences · 2025Review
- miRNAs in Pulmonary Hypertension: Mechanistic Insights and Therapeutic Potential.Biomedicines · 2025Review
- Fundamental and Targeted Approaches in Pulmonary Arterial Hypertension Treatment.Pharmaceutics · 2025Review
- miRNA regulatory networks as precision diagnostic and therapeutic targets in pulmonary arterial hypertension: from molecular cascades to clinical translation.American journal of cardiovascular disease · 2025Review
- Emerging role of sphingolipids and extracellular vesicles in development and therapeutics of cardiovascular diseases.International journal of cardiology. Heart & vasculature · 2024Review
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3 authors.
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Abstract
backgroundRecent studies have emphasized the critical role of Telocytes (TCs)-derived exosomes in organ tissue injury and repair. Our previous research showed a significant increase in ITGB1 within TCs. Pulmonary Arterial Hypertension (PAH) is marked by a loss of microvessel regeneration and progressive vascular remodeling. This study aims to investigate whether exosomes derived from ITGB1-modified TCs (ITGB1-Exo) could mitigate PAH.
methodsWe analyzed differentially expressed microRNAs (DEmiRs) in TCs using Affymetrix Genechip miRNA 4.0 arrays. Exosomes isolated from TC culture supernatants were verified through transmission electron microscopy and Nanoparticle Tracking Analysis. The impact of miR-429-3p-enriched exosomes (Exo-ITGB1) on hypoxia-induced pulmonary arterial smooth muscle cells (PASMCs) was evaluated using CCK-8, transwell assay, and inflammatory factor analysis. A four-week hypoxia-induced mouse model of PAH was constructed, and H&E staining, along with Immunofluorescence staining, were employed to assess PAH progression.
resultsForty-five miRNAs exhibited significant differential expression in TCs following ITGB1 knockdown. Mus-miR-429-3p, significantly upregulated in ITGB1-overexpressing TCs and in ITGB1-modified TC-derived exosomes, was selected for further investigation. Exo-ITGB1 notably inhibited the migration, proliferation, and inflammation of PASMCs by targeting Rac1. Overexpressing Rac1 partly counteracted Exo-ITGB1's effects. In vivo administration of Exo-ITGB1 effectively reduced pulmonary vascular remodeling and inflammation.
conclusionsOur findings reveal that ITGB1-modified TC-derived exosomes exert anti-inflammatory effects and reverse vascular remodeling through the miR-429-3p/Rac1 axis. This provides potential therapeutic strategies for PAH treatment.
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