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Volume 22, Issue 5
  • ISSN: 1570-162X
  • E-ISSN: 1873-4251
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Abstract

Background

HIV-associated pulmonary arterial hypertension (HIV-PAH), a rare and fatal condition within the pulmonary arterial hypertension spectrum, is linked to HIV infection. While ferroptosis, an iron-dependent cell death form, is implicated in various lung diseases, its role in HIV-PAH development remains unclear.

Methods

Leveraging Gene Expression Omnibus data, we identified differentially expressed genes (DEGs) in pulmonary arterial smooth muscle cells, including HIV-related DEGs (HIV-DEGs) and ferroptosis-related HIV-DEGs (FR-HIV-DEGs). PPI network analysis of FR-HIV-DEGs using CytoHubba in Cytoscape identified hub genes. We conducted functional and pathway enrichment analyses for FR-HIV-DEGs, HIV-DEGs, and hub genes. Diagnostic value assessment of hub genes utilized ROC curve analysis. Key genes were further screened, and external validation was performed. Additionally, we predicted a potential ceRNA regulatory network for key genes.

Results

1372 DEGs were found, of which 228 were HIV-DEGs, and 20 were FR-HIV-DEGs. TP53, IL6, PTGS2, IL1B (downregulated), and PPARG (upregulated) were the five hub genes that were screened. TP53, IL6, and IL1B act as ferroptosis drivers, PTGS2 as a ferroptosis marker, and PPARG as a ferroptosis inhibitor. Enrichment analysis indicated biological processes enriched in “response to oxidative stress” and pathways enriched in “human cytomegalovirus infection.” Key genes IL6 and PTGS2 exhibited strong predictive value ROC curve analysis and external validation. The predicted ceRNA regulatory network identified miRNAs (has-mir-335-5p, has-mir-124-3p) targeting key genes and lncRNAs (XIST, NEAT1) targeting these miRNAs.

Conclusion

This study advances our understanding of potential mechanisms in HIV-PAH pathogenesis, emphasizing the involvement of ferroptosis. The findings offer valuable insights for future research in HIV-PAH.

© 2024 Bentham Science Publishers
© 2024 The Author(s). Published by Bentham Science Publisher. This is an open access article published under CC BY 4.0 https://creativecommons.org/licenses/by/4.0/legalcode
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2024-08-26
2025-01-10

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Identification and Analysis of Differentially Expressed Genes Associated with Ferroptosis and HIV in PASMCs Based on Bioinformatics
Current HIV Research 22, 308 (2024); https://doi.org/10.2174/011570162X304876240821062047
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  • Article Type:     Research Article
Keyword(s): ferroptosis; HIV; IL6; PTGS2; pulmonary arterial hypertension; pulmonary arterial smooth muscle cell
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