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Related Experiment Video

Updated: May 31, 2026

RNA Catalyst as a Reporter for Screening Drugs against RNA Editing in Trypanosomes

RNA Catalyst as a Reporter for Screening Drugs against RNA Editing in Trypanosomes

Published on: July 22, 2014

Trypanosome prereplication machinery: a potential new target for an old problem.

Simone Guedes Calderano¹, Patricia Diogo de Melo Godoy, Julia Pinheiro Chagas da Cunha

¹Laboratório Especial de Toxinologia Aplicada (LETA) Center for Applied Toxinology (CAT/CEPID), Instituto Butantan, Avenida Vital Brasil 1500, 05503-000 São Paulo, SP, Brazil.

Enzyme Research

|July 15, 2011

Summary

Trypanosome Orc1/Cdc6, crucial for DNA replication, is a promising drug target for Chagas disease and sleeping sickness. Silencing this protein in Trypanosoma brucei proved lethal, highlighting its essential role in parasite survival.

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Published on: September 13, 2024

Area of Science:

Parasitology
Molecular Biology
Drug Discovery

Background:

Chagas disease (Trypanosoma cruzi) and sleeping sickness (Trypanosoma brucei) affect millions globally, primarily in Latin America and sub-Saharan Africa.
Current treatments for these neglected tropical diseases are limited by toxicity and variable efficacy against different parasite strains and disease stages.
Novel therapeutic targets are urgently needed to combat these debilitating protozoan infections.

Purpose of the Study:

To identify and validate new drug targets for trypanosomal diseases.
To investigate the essentiality of the prereplication machinery component Orc1/Cdc6 in trypanosomes.

Main Methods:

Comparative analysis of trypanosome Orc1/Cdc6 with its mammalian counterparts.
RNA interference (RNAi)-mediated gene silencing of Orc1/Cdc6 in Trypanosoma brucei.

Main Results:

Trypanosome Orc1/Cdc6 exhibits distinct structural and functional characteristics compared to mammalian Orc1 and Cdc6.
Suppression of Orc1/Cdc6 expression via RNAi led to a significant decrease in Trypanosoma brucei cell survival.
Orc1/Cdc6 plays a critical role in nuclear DNA replication and is essential for trypanosome viability.

Conclusions:

The trypanosome Orc1/Cdc6 protein represents a potential and validated drug target for developing new therapies against Chagas disease and sleeping sickness.
Targeting Orc1/Cdc6 offers a promising strategy to overcome limitations of existing treatments for these neglected tropical diseases.