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Pathogenic bacteria exploit a wide variety of host cellular processes to adhere to, invade, replicate within and damage host cells. One such process is the eukaryotic secretory pathway, in which proteins and lipids are modified and transported from the endoplasmic reticulum through the Golgi...
Brucella is a facultative intracellular bacterium responsible for brucellosis. Virulence factors involved in Brucella replication and Brucella 's strategies to circumvent the immune response are under investigation. VirB proteins that form the type IV secretion system and that are involved in...
Sequestered from the action of complement, antibody and lytic peptides, phagosomal pathogens pose a unique problem for the innate immune system both in terms of detection and disposal. An immunologically induced 47-kDa (p47) GTPase family recruited to nascent phagosomes (PGs) has provided new...
Since the anthrax mail attacks of 2001, much has been learned about the interactions between anthrax toxin and its receptors. Two distinct cellular receptors for anthrax toxin have been identified and are designated capillary morphogenesis protein 2 (CMG2) and anthrax toxin receptor/tumor...
The mammalian cell cycle is involved in many processes — such as immune responses, maintenance of epithelial barrier functions, and cellular differentiation — that affect the growth and colonization of pathogenic bacteria. Therefore it is not surprising that many bacterial pathogens...
The invasion strategies used by Yersinia species involve the ‘hijacking’ of host cellular signaling pathways, often involving microbial gene products that mimic the functions of the cellular proteins. Yersinia uses a type III secretion system to inject these microbial gene products, referred...
Upon epithelial cell contact, Shigella type III effectors activate complex signaling pathways that induce localized membrane ruffling, resulting in Shigella invasion. Bacterial induced membrane ruffles require a timely coordination of cytoskeletal processes, including actin polymerization,...
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