Tocopherol biosynthesis in Leishmania (L.) amazonensis promastigotes
| Autor: | Rodrigo A.C. Sussmann, Heloisa B. Gabriel, J M F Balanco, Ignasi Bofill Verdaguer, Emilia A. Kimura, Alejandro M. Katzin |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Leishmania (L.) amazonensis Hypothetical protein Tocopherols trypanosomatid 4-Hydroxyphenylpyruvate Dioxygenase General Biochemistry Genetics and Molecular Biology Leishmania mexicana 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Biosynthesis parasitic diseases medicine Tocopherol Enzyme Inhibitors Research Articles Benzofurans chemistry.chemical_classification Leishmania nitisinone tocopherol biology isoprenoid Cyclohexanones usnic acid Usnic acid Leishmaniasis medicine.disease biology.organism_classification 030104 developmental biology Enzyme chemistry Biochemistry 030220 oncology & carcinogenesis Nitrobenzoates Research Article |
| Zdroj: | FEBS Open Bio |
| ISSN: | 2211-5463 |
| Popis: | Leishmaniasis is a neglected disease caused by a trypanosomatid protozoan of the genus Leishmania. Most drugs used to treat leishmaniasis are highly toxic, and the emergence of drug-resistant strains has been observed. Therefore, new therapeutic targets against leishmaniasis are required. Several isoprenoid compounds, including dolichols or ubiquinones, have been shown to be important for cell viability and proliferation in various trypanosomatid species. Here, we detected the biosynthesis of tocopherol in Leishmania (L.) amazonensis promastigotes in vitro through metabolic labelling with [1-(n)-3H]-phytol. Subsequently, we confirmed the presence of vitamin E in the parasite by gas chromatography-mass spectrometry. Treatment with usnic acid or nitisinone, inhibitors of precursors of vitamin E synthesis, inhibited growth of the parasite in a concentration-dependent manner. This study provides the first evidence of tocopherol biosynthesis in a trypanosomatid and suggests that inhibitors of the enzyme 4-hydroxyphenylpyruvate dioxygenase may be suitable for use as antileishmanial compounds. Database The amino acid sequence of a conserved hypothetical protein [Leishmania mexicana MHOM/GT/2001/U1103] has been deposited in GenBank (CBZ28005.1). |
| Databáze: | OpenAIRE |
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