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Updated: Mar 10, 2026

Sexual Transmission of American Trypanosomes from Males and Females to Naive Mates
Published on: January 27, 2019
Mechanisms of Infectivity and Evasion Derived from Microvesicles Cargo Produced by Trypanosoma cruzi
Bruna C Borges1, Isadora A Uehara2, Laysa O S Dias2
1Laboratório de Osteoimunologia e Imunologia dos Tumores, Instituto de Ciências Biomédicas, Universidade Federal de UberlândiaUberlândia, Brazil; Laboratório de Tripanossomatídeos, Instituto de Ciências Biomédicas, Universidade Federal de UberlândiaUberlândia, Brazil.
Abstract:
Cell invasion by the intracellular protozoans requires interaction of proteins from both the host and the parasite. Many parasites establish chronic infections, showing they have the potential to escape the immune system; for example, Trypanosoma cruzi is an intracellular parasite that causes Chagas disease. Parasite internalization into host cell requires secreted and surface molecules, such as microvesicles. The release of microvesicles and other vesicles, such as exosomes, by different eukaryotic organisms was first observed in the late twentieth century. The characterization and function of these vesicles have recently been the focus of several investigations. In this review, we discuss the release of microvesicles by T. cruzi. The molecular content of these vesicles is composed of several molecules that take place during parasite-host cell interaction and contribute to the parasite-driven mechanism of evasion from the host immune system. These new findings appear to have a profound impact on the comprehension of T. cruzi biology and highlight novel potential strategies for developing more efficient therapeutic approaches.
Insights
Trypanosoma cruzi releases microvesicles containing molecules that help it evade the host immune system. Understanding these parasite-secreted vesicles offers new therapeutic strategies for Chagas disease.
Area of Science:
- Parasitology
- Cell Biology
- Immunology
Background:
- Intracellular protozoan infections, like Chagas disease caused by Trypanosoma cruzi, involve complex host-parasite interactions.
- Parasite evasion of the host immune system is crucial for establishing chronic infections.
- Microvesicles and exosomes are secreted vesicles involved in intercellular communication.
Purpose of the Study:
- To review the release of microvesicles by Trypanosoma cruzi.
- To discuss the molecular composition of these vesicles.
- To explore their role in host-parasite interactions and immune evasion.
Main Methods:
- Literature review on microvesicle release by Trypanosoma cruzi.
- Analysis of molecular content within T. cruzi-derived vesicles.
- Discussion of the functional implications in host-parasite interactions.
Main Results:
- Trypanosoma cruzi releases microvesicles containing various molecules.
- These molecules mediate parasite-host cell interactions.
- The vesicles contribute to the parasite's immune evasion mechanisms.
Conclusions:
- T. cruzi microvesicles play a significant role in the parasite's biology and pathogenesis.
- These findings impact the understanding of Chagas disease.
- T. cruzi vesicles represent potential targets for novel therapeutic strategies.
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