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Published on: July 3, 2015
Induction of DNA damage in human lymphocytes treated with a soluble factor secreted by Taenia solium metacestodes
Luis A Herrera1, Patricia Tato, José L Molinari
1Instituto de Investigaciones Biomédicas, UNAM, Ciudad Universitaria, México D.F., México. metil@hotmail.com
Abstract:
We have previously reported that a factor secreted by the metacestode of Taenia solium (MF) is able to transform Syrian hamster embryo cells. The aim of this study was to analyze the genotoxicity of MF in cultured human lymphocytes using the micronucleus assay. Results show a significantly high frequency of micronucleated cells in lymphocyte cultures treated with MF. Although further experiments are needed to determine whether this factor is also secreted by T. solium metacestodes in humans, analysis of the frequency of micronucleus induced in cultured human lymphocytes indicates that DNA instability induced by MF could represent a risk for malignant transformation.
Insights
A Taenia solium factor (MF) shows genotoxicity in human cells, increasing micronuclei frequency. This DNA instability suggests a potential risk for malignant transformation, warranting further investigation in human exposure contexts.
Area of Science:
- Parasitology
- Genetics
- Cell Biology
Background:
- Taenia solium metacestode (MF) previously demonstrated cell transformation capabilities.
- Genotoxicity assessment of MF is crucial due to its potential health implications.
Purpose of the Study:
- To evaluate the genotoxic effects of MF on cultured human lymphocytes.
- To assess DNA instability induced by MF using the micronucleus assay.
Main Methods:
- Cultured human lymphocytes were treated with MF.
- The micronucleus assay was employed to detect chromosomal damage.
Main Results:
- A significant increase in micronucleated cells was observed in MF-treated lymphocyte cultures.
- MF exposure induced notable DNA instability in human lymphocytes.
Conclusions:
- MF exhibits genotoxic potential in human lymphocytes.
- The DNA-damaging effects of MF suggest a possible risk for malignant transformation.
- Further research is needed to confirm MF secretion by T. solium in humans and associated risks.

