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Updated: Mar 19, 2026

Microscopy-based Assays for High-throughput Screening of Host Factors Involved in Brucella Infection of Hela Cells
Published on: August 5, 2016
The Rab1 in host cells modulates Brucella intracellular survival and binds to Brucella DnaK protein
Ning Liu1, Changjiang Sun2, Guimei Cui3
1Central Laboratory, The Second Hospital of Jilin University, Changchun, 130041, China.
Abstract:
The intracellular pathogen Brucella abortus (B. abortus) survives and replicates inside host cells within the Brucella-containing vacuole, in which membrane contains a small GTPase Rab1. Here, we reported that Rab1 mediates B. abortus intracellular growth. Furthermore, B. abortus DnaK was identified to interact with Rab1 using GST pull-down and mass spectrometry analysis. This interaction was confirmed by co-immunoprecipitation and immunofluorescence. Through DnaK-CyaA fusion protein translocation assay and immunofluorescence confocal microscopy, the B. abortus DnaK was proved to be a virB-dependent translocated substrate.
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