AI Article Synopsis

  • The study aims to understand how serum exosomes contribute to chronic obstructive pulmonary disease (COPD), focusing on the role of lncRNA TBX2-AS1 in modifying macrophage behavior.
  • Researchers used bioinformatics and various lab techniques to analyze gene expression and assess the impact of TBX2-AS1 on macrophage polarization in COPD.
  • Findings reveal that TBX2-AS1 from COPD serum promotes harmful M1 macrophage polarization while inhibiting protective M2 polarization, highlighting its potential as a target for COPD diagnosis and treatment strategies.

Article Abstract

Objective: To investigate the mechanism of serum exosomes in chronic obstructive pulmonary disease (COPD), especially the effect of lncRNA TBX2-AS1 on macrophage polarization.

Methods: Screen differentially expressed genes through bioinformatics analysis, detect the expression of related molecules in clinical samples and cell experiments, construct a mouse model and conduct functional rescue experiments, using various experimental techniques such as RT - qPCR, Western Blot, flow cytometry, ELISA, and luciferase reporter assay.

Results: TBX2-AS1 is highly expressed in the serum and serum exosomes of COPD patients, and it can promote macrophage M1 polarization and inhibit M2 polarization; it exerts its role by negatively regulating the miR-423-5p/miR-23b - 3p axis, where miR-423-5p inhibits CELSR2 expression to prevent M1 polarization, and miR-23b-3p inhibits NEK6 expression to promote M2 polarization; experiments, down-regulation of CELSR2/NEK6 can reverse the promoting effect of COPD serum exosomes on lung injury and inflammation.

Conclusion: COPD serum exosomes deliver TBX2-AS1 to macrophages, regulate the miR-423-5p-CELSR2/miR-23b-3p-NEK6 pathway, affect macrophage polarization, and exacerbate the progression of COPD, providing new directions and potential targets for the diagnosis and treatment of COPD.

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Source
http://dx.doi.org/10.1080/08820139.2024.2434692DOI Listing

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