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Effector-Triggered Immunity

delete2023-04-26
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OA
AI
B
Brenna C. Remick *
M
Moritz M. Gaidt
R
Russell E. Vance
DOI:10.1146/annurev-immunol-101721-031732delete
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Abstract

Abstract

En 中文
The innate immune system detects pathogens via germline-encoded receptors that bind to conserved pathogen ligands called pathogen-associated molecular patterns (PAMPs). Here we consider an additional strategy of pathogen sensing called effector-triggered immunity (ETI). ETI involves detection of pathogen-encoded virulence factors, also called effectors. Pathogens produce effectors to manipulate hosts to create a replicative niche and/or block host immunity. Unlike PAMPs, effectors are often diverse and rapidly evolving and can thus be unsuitable targets for direct detection by germline-encoded receptors. Effectors are instead often sensed indirectly via detection of their virulence activities. ETI is a viable strategy for pathogen sensing and is used across diverse phyla, including plants, but the molecular mechanisms of ETI are complex compared to simple receptor/ligand-based PAMP detection. Here we survey the mechanisms and functions of ETI, with a particular focus on emerging insights from animal studies. We suggest that many examples of ETI may remain to be discovered, hiding in plain sight throughout immunology.
Keywords:
innate immunity
effector-triggered immunity
pathogen-associated molecular patterns
guard immunity
virulence factors

Journal

Annual Review of Immunology cover
Annual Review of Immunology
IF:
33.3
Papers:
775
Citations:
2.0W

Organization

U
University of California Berkeley
Scholars:
3.5W
Papers: 2.8W
Citations: 11.3W
University of California System cover
University of California System
Scholars:
37.7W
Papers: 33.8W
Citations: 6.6K
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