| Autor: |
Tao, Dingyin, Ubaida-Mohien, Ceereena, Mathias, Derrick K., King, Jonas G., Pastrana-Mena, Rebecca, Tripathi, Abhai, Goldowitz, Ilana, Graham, David R., Moss, Eli, Marti, Matthias, Dinglasan, Rhoel R. |
| Zdroj: |
Molecular and Cellular Proteomics (MCP Online); October 2014, Vol. 13 Issue: 10 p2705-2724, 20p |
| Abstrakt: |
One of the critical gaps in malaria transmission biology and surveillance is our lack of knowledge about Plasmodium falciparumgametocyte biology, especially sexual dimorphic development and how sex ratios that may influence transmission from the human to the mosquito. Dissecting this process has been hampered by the lack of sex-specific protein markers for the circulating, mature stage V gametocytes. The current evidence suggests a high degree of conservation in gametocyte gene complement across Plasmodium, and therefore presumably for sex-specific genes as well. To better our understanding of gametocyte development and subsequent infectiousness to mosquitoes, we undertook a Systematic Subtractive Bioinformatic analysis (filtering) approach to identify sex-specific P. falciparumNF54 protein markers based on a comparison with the Dd2 strain, which is defective in producing males, and with syntenic male and female proteins from the reanalyzed and updated P. berghei(related rodent malaria parasite) gametocyte proteomes. This produced a short list of 174 male- and 258 female-enriched P. falciparumstage V proteins, some of which appear to be under strong diversifying selection, suggesting ongoing adaptation to mosquito vector species. We generated antibodies against three putative female-specific gametocyte stage V proteins in P. falciparumand confirmed either conserved sex-specificity or the lack of cross-species sex-partitioning. Finally, our study provides not only an additional resource for mass spectrometry-derived evidence for gametocyte proteins but also lays down the foundation for rational screening and development of novel sex-partitioned protein biomarkers and transmission-blocking vaccine candidates. |
| Databáze: |
Supplemental Index |
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