Distinct Unfolded Protein Response in Leishmania
Author Information
Author(s): Gosline Sara J. C., Nascimento Mirna, McCall Laura-Isobel, Zilberstein Dan, Thomas David Y., Matlashewski Greg, Hallett Michael
Primary Institution: McGill University
Hypothesis
Does Leishmania donovani have a distinct unfolded protein response compared to higher eukaryotes?
Conclusion
Leishmania donovani exhibits a translationally mediated unfolded protein response but lacks transcriptional control, making it more sensitive to ER stress.
Supporting Evidence
- Leishmania donovani lacks the transcriptional machinery typically involved in the unfolded protein response.
- The study identified increased phosphorylation of eIF2α in response to ER stress in Leishmania.
- Leishmania donovani was found to be more sensitive to ER stress-inducing agents than host macrophages.
Takeaway
This study found that a type of stress response in Leishmania donovani is different from what we see in more complex organisms, which could help us find new ways to treat infections.
Methodology
The study used computational modeling and in vivo induction of the UPR in cultured Leishmania donovani to analyze protein levels and phosphorylation.
Limitations
The study does not address the evolution of mRNA regulation in response to ER stress in Leishmania.
Digital Object Identifier (DOI)
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