A novel inhibitory strategy of using and killer toxins.

Future Microbiol

Department of Biology, Faculty of Biological Sciences, Falavarjan Branch, Islamic Azad University, Isfahan, Iran.

Published: December 2024

AI Article Synopsis

  • The study investigates the potential of killer yeasts and their toxins as a biological method for treating leishmaniasis, a widespread parasitic disease.
  • Killer yeasts were isolated, and their toxins (K2 and K.L) showed significantly lower IC50 values against leishmaniasis-causing organisms compared to standard treatments like Glucantime and Amphotericin B.
  • The research concludes that K2 and K.L toxins possess strong antileishmanial properties, presenting a promising alternative for biological treatment of leishmaniasis.

Article Abstract

Aim: Leishmaniasis is a globally prevalent parasitic disease that has drawn significant attention. Killer yeasts offer a novel biological control method, presenting a potential alternative for treating leishmaniasis. This study evaluates the antileishmanial activity of and killer toxins against .

Materials & Methods: Killer yeasts were isolated using the Well method. The genes encoding K2 and K.L killer toxins were identified by PCR, and the toxins were purified via SDS-PAGE. Antileishmanial and cytotoxic effects on promastigotes and amastigotes were evaluated using the MTT assay.

Results: The first killer isolate was identified as ZBAM (GenBank accession: OQ376749.1) and the second as ZBAM (GenBank accession: OQ401036.1). IC50 values of K2 and K.L toxins against promastigotes were significantly lower than Glucantime and Amphotericin B. The EC50 values at 24 hours for Glucantime, K2, and K.L were 11.83 ± 0.02 μg/ml, 2.35 ± 0.01 μg/ml, and 3.23 ± 0.03 μg/ml, respectively. The EC50 values for K2 and K.L against amastigotes were also lower than Glucantime.

Conclusion: This is the first report of the antileishmanial effects of K2 and K.L toxins against , suggesting these yeasts as promising candidates for biological leishmaniasis treatment.

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Source
http://dx.doi.org/10.1080/17460913.2024.2443329DOI Listing

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  • The research concludes that K2 and K.L toxins possess strong antileishmanial properties, presenting a promising alternative for biological treatment of leishmaniasis.
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