Global protein profiling studies of chikungunya virus infection identify different proteins but common biological processes

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Abstract

Chikungunya fever (CHIKF) caused by the mosquito-transmitted chikungunya virus (CHIKV) swept into international prominence from late 2005 as an epidemic of CHIKF spread around countries surrounding the Indian Ocean. Although significant advances have been made in understanding the pathobiology of CHIKF, numerous questions still remain. In the absence of commercially available specific drugs to treat the disease, or a vaccine to prevent the diseases, the questions have particular significance. A number of studies have used global proteome analysis to increase our understanding of the process of CHIKV infection using a number of different experimental techniques and experimental systems. In all, over 700 proteins have been identified in nine different analyses by five different groups as being differentially regulated. Remarkably, only a single protein, eukaryotic elongation factor 2, has been identified by more than two different groups as being differentially regulated during CHIKV infection. This review provides a critical overview of the studies that have used global protein profiling to understand CHIKV infection and shows that while a broad consensus is emerging on which biological processes are altered during CHIKV infection, this consensus is poorly supported in terms of consistent identification of any key proteins mediating those biological processes. Copyright © 2014 John Wiley & Sons, Ltd.

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