Probabilistic data integration identifies reliable gametocyte-specific proteins and transcripts in malaria parasites

Meerstein-Kessel, L. et al. (2018) Probabilistic data integration identifies reliable gametocyte-specific proteins and transcripts in malaria parasites. Scientific Reports, 8, 410. (doi: 10.1038/s41598-017-18840-7) (PMID:29323249) (PMCID:PMC5765010)

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Plasmodium gametocytes are the sexual forms of the malaria parasite essential for transmission to mosquitoes. To better understand how gametocytes differ from asexual blood-stage parasites, we performed a systematic analysis of available 'omics data for P. falciparum and other Plasmodium species. 18 transcriptomic and proteomic data sets were evaluated for the presence of curated "gold standards" of 41 gametocyte-specific versus 46 non-gametocyte genes and integrated using Bayesian probabilities, resulting in gametocyte-specificity scores for all P. falciparum genes. To illustrate the utility of the gametocyte score, we explored newly predicted gametocyte-specific genes as potential biomarkers of gametocyte carriage and exposure. We analyzed the humoral immune response in field samples against 30 novel gametocyte-specific antigens and found five antigens to be differentially recognized by gametocyte carriers as compared to malaria-infected individuals without detectable gametocytes. We also validated the gametocyte-specificity of 15 identified gametocyte transcripts on culture material and samples from naturally infected individuals, resulting in eight transcripts that were >1000-fold higher expressed in gametocytes compared to asexual parasites and whose transcript abundance allowed gametocyte detection in naturally infected individuals. Our integrated genome-wide gametocyte-specificity scores provide a comprehensive resource to identify targets and monitor P. falciparum gametocytemia.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Marti, Professor Matthias
Authors: Meerstein-Kessel, L., van der Lee, R., Stone, W., Lanke, K., Baker, D. A., Alano, P., Silvestrini, F., Janse, C. J., Khan, S. M., van de Vegte-Bolmer, M., Graumans, W., Siebelink-Stoter, R., Kooij, T. W.A., Marti, M., Drakeley, C., Campo, J. J., van Dam, T. J.P., Sauerwein, R., Bousema, T., and Huynen, M. A.
College/School:College of Medical Veterinary and Life Sciences > School of Infection & Immunity
Journal Name:Scientific Reports
Publisher:Nature Publishing Group
ISSN (Online):2045-2322
Copyright Holders:Copyright © 2017 The Authors
First Published:First published in Scientific Reports 8: 410
Publisher Policy:Reproduced under a Creative Commons License

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