Intracellular pathogens establish infections by interacting with host cells and suppressing innate human defense systems. Our research focuses on effector proteins (virulence factors) shuttled into the host cytosol by Burkholderia spp., Francisella tularensis, and Coxiella burnetii and the host proteins with which they interact. We use bioinformatics tools to infer these interactions, verify them via in vitro yeast two-hybrid assays, and validate them by in vivo infectivity murine models.
Wallqvist, A., H. Wang, N. Zavaljevski, V. Memisevic, K. Kwon, R. Pieper, S. V. Rajagopala, and J. Reifman. Mechanisms of action of Coxiella burnetii effectors inferred from host-pathogen protein interactions. PLOS ONE. 2017 November 27; 12(11):e0188071. [PDF]
Memisevic, V., K. Kumar, N. Zavaljevski, D. DeShazer, A. Wallqvist, and J. Reifman. DBSecSys 2.0: a database of Burkholderia mallei and Burkholderia pseudomallei secretion systems. BMC Bioinformatics. 2016 September 20; 17:387. [PDF]
Wallqvist, A., V. Memisevic, N. Zavaljevski, R. Pieper, S. V. Rajagopala, K. Kwon, C. Yu, T. A. Hoover, and J. Reifman. Using host-pathogen protein interactions to identify and characterize Francisella tularensis virulence factors. BMC Genomics. 2015 December 29; 16:1106. [PDF]
Chiang, C. Y., I. Uzoma, D. J. Lane, V. Memisevic, F. Alem, K. Yao, S. Bavari, A. Wallqvist, R. M. Hakami, and R. G. Panchal. A reverse-phase protein microarray-based screen identifies host signaling dynamics upon Burkholderia spp. infection. Frontiers in Microbiology. 2015 July 27; 6:683. [PDF]
Memisevic, V., N. Zavaljevski, S. V. Rajagopala, K. Kwon, R. Pieper, D. DeShazer, J. Reifman, and A. Wallqvist. Mining host-pathogen protein interactions to characterize Burkholderia mallei infectivity mechanisms. PLOS Computational Biology. 2015 March 4; 11(3):e1004088. [PDF]
Memisevic, V., K. Kumar, L. Cheng, N. Zavaljevski, D. DeShazer, A. Wallqvist, and J. Reifman. DBSecSys: a database of Burkholderia mallei secretion systems. BMC Bioinformatics. 2014 July 16; 15:244. [PDF]
Memisevic, V., N. Zavaljevski, R. Pieper, S. V. Rajagopala, K. Kwon, K. Townsend, C. Yu, X. Yu, D. Deshazer, J. Reifman, and A. Wallqvist. Novel Burkholderia mallei virulence factors linked to specific host-pathogen protein interactions. Molecular & Cellular Proteomics. 2013 November 1; 12(11):3036-3051. [PDF]