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Using Fluorescent Proteins to Monitor Glycosome Dynamics in the African Trypanosome
Published on: August 19, 2014
Lipid and fatty acid metabolism in trypanosomatids
Giovana Parreira de Aquino1, Marco Antonio Mendes Gomes1, Roberto Köpke Salinas2
1Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil.
Abstract:
Trypanosomiases and leishmaniases are neglected tropical diseases that have been spreading to previously non-affected areas in recent years. Identification of new chemotherapeutics is needed as there are no vaccines and the currently available treatment options are highly toxic and often ineffective. The causative agents for these diseases are the protozoan parasites of the Trypanosomatidae family, and they alternate between invertebrate and vertebrate hosts during their life cycles. Hence, these parasites must be able to adapt to different environments and compete with their hosts for several essential compounds, such as amino acids, vitamins, ions, carbohydrates, and lipids. Among these nutrients, lipids and fatty acids (FAs) are essential for parasite survival. Trypanosomatids require massive amounts of FAs, and they can either synthesize FAs de novo or scavenge them from the host. Moreover, FAs are the major energy source during specific life cycle stages of T. brucei, T. cruzi, and Leishmania. Therefore, considering the distinctive features of FAs metabolism in trypanosomatids, these pathways could be exploited for the development of novel antiparasitic drugs. In this review, we highlight specific aspects of lipid and FA metabolism in the protozoan parasites T. brucei, T. cruzi, and Leishmania spp., as well as the pathways that have been explored for the development of new chemotherapies.
Insights
New drugs targeting fatty acid metabolism in Trypanosomatidae parasites are crucial for treating neglected tropical diseases like trypanosomiases and leishmaniases, as current therapies are toxic and ineffective.
Area of Science:
- Parasitology
- Molecular Biology
- Drug Discovery
Background:
- Trypanosomiases and leishmaniases are neglected tropical diseases with increasing geographic spread.
- Existing treatments are toxic and ineffective, necessitating new therapeutic strategies.
- Protozoan parasites in the Trypanosomatidae family cause these diseases, requiring lipids and fatty acids (FAs) for survival and energy.
Purpose of the Study:
- To review lipid and fatty acid metabolism in Trypanosomatidae parasites.
- To highlight metabolic pathways as potential targets for novel antiparasitic drug development.
Main Methods:
- Literature review focusing on lipid and FA metabolism in *T. brucei*, *T. cruzi*, and *Leishmania* spp.
- Analysis of FA synthesis and scavenging pathways in these parasites.
- Exploration of potential drug targets within FA metabolism.
Main Results:
- Trypanosomatids exhibit unique lipid and FA metabolism, utilizing both de novo synthesis and host scavenging.
- Fatty acids are essential nutrients and a primary energy source for critical parasite life stages.
- Distinctive metabolic pathways offer opportunities for selective drug targeting.
Conclusions:
- Targeting lipid and FA metabolism presents a promising avenue for developing novel chemotherapeutics against trypanosomiases and leishmaniases.
- Understanding these pathways is key to overcoming drug resistance and improving treatment efficacy.
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