Delivery of Heterologous Proteins, Enzymes, and Antigens via the Bacterial Type III Secretion System
MICROORGANISMS(2020)
Abstract
The Type III Secretion System (T3SS) is a multimeric protein complex composed of over 20 different proteins, utilized by Gram-negative bacteria to infect eukaryotic host cells. The T3SS has been implicated as a virulence factor by which pathogens cause infection and has recently been characterized as a communication tool between bacteria and plant cells in the rhizosphere. The T3SS has been repurposed to be used as a tool for the delivery of non-native or heterologous proteins to eukaryotic cells or the extracellular space for a variety of purposes, including drug discovery and drug delivery. This review covers the methodology of heterologous protein secretion as well as multiple cases of utilizing the T3SS to deliver heterologous proteins or artificial materials. The research covered in this review will serve to outline the scope and limitations of utilizing the T3SS as a tool for protein delivery.
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Key words
type III secretion system,heterologous protein secretion,vaccine delivery,secretion tags,fused proteins,pathogenesis,drug discovery,Gram-negative pathogens
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