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Characteristics of plasma exosomes in drug-resistant tuberculosis patients

Mingrui Wu1, Qianwei Yang2, Caiting Yang2

  • 1Key Laboratory of Cellular Physiology, Ministry of Education, The Department of Physiology, School of Basic Sciences, Shanxi Medical University, Taiyuan, 030001, China.

Tuberculosis (Edinburgh, Scotland)
|June 17, 2023
PubMed
Abstract

Insights

Exosomes from drug-resistant tuberculosis (DR-TB) patients show altered apolipoprotein levels, potentially impacting cholesterol metabolism. These exosomal changes may help distinguish DR-TB from non-drug-resistant TB and reveal new insights into disease pathogenesis.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Immunology

Background:

  • Drug-resistant tuberculosis (DR-TB) presents a significant global health challenge.
  • Exosomes mediate host-pathogen communication, but their role in DR-TB remains unclear.
  • Understanding exosomal molecular events is crucial for DR-TB detection and control.

Purpose of the Study:

  • To investigate the proteomic profile of exosomes in DR-TB patients.
  • To explore the potential role of exosomal proteins in DR-TB pathogenesis.

Main Methods:

  • Plasma samples from DR-TB and non-drug-resistant TB (NDR-TB) patients were analyzed.
  • Exosomes were isolated and characterized.
  • Label-free quantitative proteomics and bioinformatics analysis were performed.

Main Results:

  • 16 proteins were upregulated and 10 were downregulated in DR-TB exosomes compared to NDR-TB.
  • Downregulated proteins were primarily apolipoproteins involved in cholesterol metabolism.
  • APOA1, APOB, and APOC1 were identified as key proteins in the exosomal protein-protein interaction network.

Conclusions:

  • Exosomal protein profiles can differentiate DR-TB from NDR-TB.
  • Apolipoproteins (APOA1, APOB, APOC1) in exosomes may contribute to DR-TB pathogenesis via cholesterol metabolism regulation.
Keywords:
ApolipoproteinsDrug-resistant tuberculosisPlasma exosomeProteomics

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