Cytochrome oxidase subunit 2 gene allows simultaneous detection and typing of Trypanosoma rangeli and Trypanosoma cruzi

Parasites & Vectors
Amanda Regina Nichi de SáMônica Lúcia Gomes

Abstract

The parasites Trypanosoma rangeli and Trypanosoma cruzi share vectors and hosts over a wide geographical area in Latin America. In this study, we propose a single molecular approach for simultaneous detection and typing of T. rangeli and T. cruzi. A restriction fragment length polymorphism analysis of the mitochondrial cytochrome oxidase II gene (COII-RFLP) using enzyme AluI and different amounts of DNA from the major genetic groups of T. rangeli and T. cruzi (KP1+/KP1- and DTU-I/DTU-II) was carried out. The same marker was tested on the other T. cruzi DTUs (DTU-III to DTU-VI) and on DNA extracted from gut contents of experimentally infected triatomines. The COII PCR generates a ~400 bp fragment, which after digestion with AluI (COII-RFLP) can be used to distinguish T. rangeli from T. cruzi and simultaneously differentiate the major genetic groups of T. rangeli (KP1+ and KP1-) and T. cruzi (DTU-I and DTU-II). The COII-RFLP generated bands of ~120 bp and ~280 bp for KP1+, whereas for KP1- no amplicon cleavage was observed. For T. cruzi, digestion of COII revealed a ~300 bp band for DTU-I and a ~250 bp band for DTU-II. For DTU-III to DTU-VI, COII-RFLP generated bands ranging from ~310 to ~330 bp, but the differentiation of these ...Continue Reading

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Datasets Mentioned

BETA
EU302222.1
AF359035.1
DQ343720.1
AF359030.1
AF359039.1
and
AF359041.1
strains
HQ691249.1
HQ691248.1

Methods Mentioned

BETA
PCR
genotyping

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