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Can miRNA Indicate Risk of Illness after Continuous Exposure to M. tuberculosis?

Cleonardo Augusto Silva1,2, Arthur Ribeiro-Dos-Santos1, Wanderson Gonçalves Gonçalves1,2

  • 1PPG em Genética e Biologia Molecular, Laboratório de Genética Humana e Médica, Universidade Federal do Pará, Belém 66075-110, Brazil.

International Journal of Molecular Sciences
|April 30, 2021
PubMed

Insights

This study explored microRNAs (miRNAs) as potential biomarkers for tuberculosis. Three specific miRNAs were identified, suggesting their role in immune response and disease regulation for improved tuberculosis diagnosis.

Area of Science:

  • Molecular Biology
  • Immunology
  • Infectious Diseases

Background:

  • MicroRNAs (miRNAs) are crucial regulatory elements in biological processes, but their role in infectious diseases like tuberculosis remains unclear.
  • Tuberculosis (TB) presents significant challenges in prevention, diagnosis, and treatment, with current therapies causing side effects.
  • Identifying novel biomarkers is essential for improving TB management.

Purpose of the Study:

  • To identify potential biomarkers for tuberculosis using next-generation sequencing (NGS) techniques.
  • To investigate global miRNA expression profiles in tuberculosis patients compared to healthy controls.
  • To explore the role of differentially expressed miRNAs in the immune physiopathology of tuberculosis.

Main Methods:

  • Collected blood samples from tuberculosis patients (n=9), their healthy physicians (n=6), and external healthy controls (n=7).
  • Applied NGS to obtain global miRNA expression profiles.
  • Utilized differential expression analysis, target gene prediction, gene set enrichment, and miRNA-gene network analyses.

Main Results:

  • Identified 153 differentially expressed miRNAs.
  • Found three specific differentially expressed miRNAs (hsa-let-7g-5p, hsa-miR-486-3p, and hsa-miR-4732-5p) between tuberculosis patients and their physicians.
  • These miRNAs are implicated in granuloma regulation and immune response.

Conclusions:

  • MicroRNAs play a role in immune modulation by regulating gene expression in immune cells.
  • The identified miRNAs show potential as biomarkers for tuberculosis diagnosis and understanding disease mechanisms.
  • Further research into miRNAs could lead to improved diagnostic tools and therapeutic strategies for tuberculosis.
Keywords:
differential expression analysismiRNAtuberculosis

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