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Distinct APOL1 functions in trypanosomes and kidney podocytes
1Laboratory of Molecular Parasitology, Institute of Molecular Biology and Medicine, Université Libre de Bruxelles, Gosselies, Belgium.
Trends in Parasitology
|December 10, 2021
Summary
Apolipoprotein L1 (APOL1) kills certain trypanosomes but variants linked to kidney disease suggest distinct activities. This study proposes separate functions for APOL1 in trypanolysis and nephropathy.
Area of Science:
- Molecular biology
- Parasitology
- Human genetics
Background:
- The human serum protein apolipoprotein L1 (APOL1) exhibits trypanocidal activity against Trypanosoma brucei.
- APOL1 does not effectively kill Trypanosoma rhodesiense, a pathogen causing sleeping sickness.
- Certain APOL1 C-terminal variants are associated with kidney disease.
Purpose of the Study:
- To investigate the distinct activities of apolipoprotein L1 (APOL1) isoforms.
- To differentiate the mechanisms underlying APOL1-mediated trypanolysis and kidney disease.
- To explore the relationship between APOL1's structure, function, and associated pathologies.
Main Methods:
- Comparative analysis of APOL1 activity against different Trypanosoma species.
- Examination of APOL1 C-terminal variants.
- Investigation of topological and functional differences between intracellular and extracellular APOL1 isoforms.
Main Results:
- APOL1 demonstrates differential trypanocidal activity, effectively targeting T. brucei but not T. rhodesiense.
- APOL1 C-terminal variants exhibit potent activity against T. rhodesiense but are implicated in kidney disease.
- Evidence suggests distinct intracellular and extracellular APOL1 functions.
Conclusions:
- Trypanolysis and APOL1-associated kidney disease likely arise from separate APOL1 activities.
- Understanding these distinct functions is crucial for therapeutic strategies against trypanosomiasis and APOL1 nephropathy.
- Further research into APOL1 isoform-specific functions is warranted.
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