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Novel genotyping tools for investigating transmission dynamics of Plasmodium falciparum

Wampfler, Rahel and Timinao, Lincoln and Beck, Hans-Peter and Soulama, Issiaka and Tiono, Alfred B. and Siba, Peter and Mueller, Ivo and Felger, Ingrid. (2014) Novel genotyping tools for investigating transmission dynamics of Plasmodium falciparum. Journal of infectious diseases, Vol. 210, no. 8. pp. 1188-1197.

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Official URL: http://edoc.unibas.ch/dok/A6308521

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Abstract

Differentiation between gametocyte-producing Plasmodium falciparum clones depends on both high levels of stage-specific transcripts and high genetic diversity of the selected genotyping marker obtained by a high-resolution typing method. By analyzing consecutive samples of one host, the contribution of each infecting clone to transmission and the dynamics of gametocyte production in multiclone infections can be studied.; We have evaluated capillary electrophoresis based differentiation of 6 length-polymorphic gametocyte genes. RNA and DNA of 25 µL whole blood from 46 individuals from Burkina Faso were simultaneously genotyped.; Highest discrimination power was achieved by pfs230 with 18 alleles, followed by pfg377 with 15 alleles. When assays were performed in parallel on RNA and DNA, 85.7% of all pfs230 samples and 59.5% of all pfg377 samples contained at least one matching genotype in DNA and RNA.; The imperfect detection in both, DNA and RNA, was identified as major limitation for investigating transmission dynamics, owing primarily to the volume of blood processed and the incomplete representation of all clones in the sample tested. Abundant low-density gametocyte carriers impede clone detectability, which may be improved by analyzing larger volumes and detecting initially sequestered gametocyte clones in follow-up samples.
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH)
UniBasel Contributors:Beck, Hans-Peter and Felger, Ingrid
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Oxford University Press
ISSN:0022-1899
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:07 Nov 2014 08:28
Deposited On:07 Nov 2014 08:28

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