Mar 13, 2014

Whole Genome Sequencing of Plasmodium vivax Isolates Reveals Frequent Sequence and Structural Polymorphisms in Erythrocyte Binding Genes

BioRxiv : the Preprint Server for Biology
François Le DilyEugenia Lo


Plasmodium vivax malaria is much less common in Africa than the rest of the world because the parasite relies primarily on the Duffy antigen/chemokine receptor ( DARC ) to invade human erythrocytes, and the majority of Africans are Duffy negative. Recently, there has been a dramatic increase in the reporting of P. vivax cases in Africa, with a high number of them being in Duffy negative individuals, potentially indicating P. vivax has evolved an alternative invasion mechanism that can overcome Duffy negativity. Here, we analyzed single nucleotide polymorphism (SNP) and copy number variation (CNV) in Whole Genome Sequence (WGS) data from 44 P. vivax samples isolated from symptomatic malaria patients in southwestern Ethiopia, where both Duffy positive and Duffy negative individuals are found. A total of 236,351 SNPs were detected, of which 21.9% was nonsynonymous and 78.1% was synonymous mutations. The largest number of SNPs were detected on chromosomes 9 (33,478 SNPs; 14% of total) and 10 (28,133 SNPs; 11.9%). There were particularly high levels of polymorphism in erythrocyte binding gene candidates including reticulocyte binding protein 2c ( RBP 2c), merozoite surface protein 1 ( MSP 1), and merozoite surface protein 3 ( MSP 3....Continue Reading

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Mentioned in this Paper

DNA Topology Regulation
Transcription, Genetic
Chromatin Immunoprecipitation
Gene Expression
Study of Epigenetics
Progestin [EPC]

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