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Methods for the Isolation and Study of Exovesicle DNA from Trypanosomatid Parasites

Lina María Orrego1, Romina Romero2,3, Antonio Osuna4,5

  • 1Programa de Estudio y Control de Enfermedades Tropicales (PECET), Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia.

Methods in Molecular Biology (Clifton, N.J.)
|July 27, 2021
PubMed

Insights

This study details a protocol for isolating extracellular vesicles (EVs) from Trypanosoma cruzi. These parasite-derived EVs contain DNA biomarkers for diagnosing infectious diseases.

Area of Science:

  • Parasitology
  • Molecular Biology
  • Biochemistry

Background:

  • Extracellular vesicles (EVs) are cell-derived structures carrying lipids, proteins, RNA, and DNA.
  • Parasite-derived EVs are crucial for understanding host-pathogen interactions in diseases.
  • EVs hold potential as diagnostic biomarkers due to their molecular cargo.

Purpose of the Study:

  • To provide a detailed protocol for isolating Trypanosoma cruzi-derived EVs.
  • To outline methods for purifying the DNA cargo within these EVs.
  • To enable subsequent characterization of EV-derived DNA for diagnostic applications.

Main Methods:

  • Isolation of extracellular vesicles (EVs) from Trypanosoma cruzi cultures.
  • Purification of DNA cargo from isolated EVs.
  • Characterization of purified DNA for biomarker potential.

Main Results:

  • A reproducible protocol for T. cruzi EV isolation was established.
  • Purified EV DNA can be characterized for diagnostic purposes.
  • The isolation method is adaptable to other medically important parasites.

Conclusions:

  • Extracellular vesicles from T. cruzi are a valuable source of parasite DNA.
  • This protocol facilitates the development of novel diagnostic tools for kinetoplastid infections.
  • EV-based biomarkers offer a promising avenue for infectious disease diagnostics and therapeutics.
Keywords:
DNAExosomeExtracellular vesiclesIsolationLeishmaniaParasitesTrypanosomaTrypanosomatid

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