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Published on: December 4, 2015
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Plasmodium falciparum biosynthesizes sulfoglycosphingolipids
Malena Landoni1, Vilma G Duschak, Valnice J Peres
1CIHIDECAR, Departamento de Química Orgánica, Pabellón II, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires 1428, Argentina.
Molecular and Biochemical Parasitology
|May 15, 2007
Summary
Sulfated glycosphingolipids are synthesized by Plasmodium falciparum, the malaria parasite. Inhibiting their production halts parasite development, suggesting a potential therapeutic target for malaria.
Area of Science:
- Biochemistry
- Parasitology
- Cell Biology
Background:
- Sulfated glycosphingolipids are crucial for cell adhesion and development.
- Their role in parasitic protozoa, like Plasmodium falciparum, remains largely unknown.
- Understanding these molecules in malaria parasites could reveal new therapeutic targets.
Purpose of the Study:
- To investigate the biosynthesis, structure, and function of sulfoglycosphingolipids in Plasmodium falciparum.
- To explore the potential of targeting sulfoglycosphingolipid synthesis for malaria treatment.
Main Methods:
- Metabolic labeling with radioactive isotopes ([(14)C]palmitic acid, [(14)C]glucose, Na(2)(35)SO(4)).
- Saponification and purification of labeled acidic components.
- Chemical degradation, TLC analysis, and UV-MALDI-TOF mass spectrometry for structural characterization.
- Treatment with d,l-threo-phenyl-2-palmitoylamino-3-morpholino-1-propanol (PPMP) to assess effects on parasite development and biosynthesis.
Main Results:
- Sulfoglycosphingolipids are actively synthesized during all intraerythrocytic stages of Plasmodium falciparum.
- Two sulfolipids, SPf1 and SPf2, were identified and characterized.
- SPf2 possesses a disulfated hexose linked to a 20:1 sphingosine acylated with C18:0 fatty acid.
- Inhibition of sulfoglycosphingolipid biosynthesis by PPMP arrested parasite development.
Conclusions:
- This study provides the first evidence of sulfoglycosphingolipid synthesis in Apicomplexa.
- The findings suggest sulfoglycosphingolipids play a vital role in Plasmodium falciparum development.
- Targeting sulfoglycosphingolipid biosynthesis presents a promising avenue for novel antimalarial therapies.
- Further research may elucidate the role of these lipids in malaria pathogenesis and aggregation phenomena.
