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Role of Host Small GTPases in Apicomplexan Parasite Infection

Journal

MICROORGANISMS
Volume 10, Issue 7, Pages -

Publisher

MDPI
DOI: 10.3390/microorganisms10071370

Keywords

Apicomplexa; GTPases; malaria; Plasmodium; Toxoplasma; Cryptosporidium; Theileria; host-parasite interactions; host-targeted therapies

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Apicomplexa parasites modify the host cell environment and manipulate the host cytoskeleton and organelles to adapt to their parasitic lifestyle. Small GTPases play a crucial role in these processes and could be potential targets for novel host-targeted therapies against Apicomplexa infections.
The Apicomplexa are obligate intracellular parasites responsible for several important human diseases. These protozoan organisms have evolved several strategies to modify the host cell environment to create a favorable niche for their survival. The host cytoskeleton is widely manipulated during all phases of apicomplexan intracellular infection. Moreover, the localization and organization of host organelles are altered in order to scavenge nutrients from the host. Small GTPases are a class of proteins widely involved in intracellular pathways governing different processes, from cytoskeletal and organelle organization to gene transcription and intracellular trafficking. These proteins are already known to be involved in infection by several intracellular pathogens, including viruses, bacteria and protozoan parasites. In this review, we recapitulate the mechanisms by which apicomplexan parasites manipulate the host cell during infection, focusing on the role of host small GTPases. We also discuss the possibility of considering small GTPases as potential targets for the development of novel host-targeted therapies against apicomplexan infections.

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