Genetic Variation in Plasmodium falciparum
Author Information
Author(s): Claire Kidgell, Sarah K. Volkman, Johanna Daily, Justin O. Borevitz, David Plouffe, Yingyao Zhou, Jeffrey R. Johnson, Karine G. Le Roch, Ousmane Sarr, Omar Ndir, Soulyemane Mboup, Serge Batalov, Dyann F. Wirth, Elizabeth A. Winzeler
Primary Institution: The Scripps Research Institute
Hypothesis
Understanding the extent and basis of genetic variation in Plasmodium falciparum is important for strategies of disease control.
Conclusion
The study identified approximately 500 genes in Plasmodium falciparum that are evolving at higher than neutral rates, which may be driven by the human immune system and drug use.
Supporting Evidence
- The study identified ≈500 genes evolving at higher than neutral rates.
- 211 variable genes without paralogs contain most known immunogens and a few drug targets.
- Gene amplification events were observed surrounding the pfmdr1 gene.
Takeaway
The malaria parasite changes its genes a lot, which helps it avoid our immune system and resist drugs, making it harder to treat.
Methodology
The authors performed a full-genome scan of allelic variability in 14 field and laboratory strains of P. falciparum using a custom high-density oligonucleotide array.
Limitations
The study may not capture all genetic variations due to the limitations of the sequencing methods used.
Participant Demographics
The strains analyzed were obtained from four different continents.
Statistical Information
P-Value
p ≤ 1.0E−100
Statistical Significance
p ≤ 1.0E−100
Digital Object Identifier (DOI)
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