Autophagic control of listeria through intracellular innate immune recognition in drosophila.
Autophagy, an evolutionally conserved homeostatic process for catabolizing cytoplasmic components, has been linked to the elimination of intracellular pathogens during mammalian innate immune responses. However, the mechanisms underlying cytoplasmic infection-induced autophagy and the function of autophagy in host survival after infection with intracellular pathogens remain unknown. Here we report that in drosophila, recognition of diaminopimelic acid-type peptidoglycan by the pattern-recognition receptor PGRP-LE was crucial for the induction of autophagy and that autophagy prevented the intracellular growth of Listeria monocytogenes and promoted host survival after this infection. Autophagy induction occurred independently of the Toll and IMD innate signaling pathways. Our findings define a pathway leading from the intracellular pattern-recognition receptors to the induction of autophagy to host defense.
Yano
Tamaki
T
Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan.
Mita
Shizuka
S
Ohmori
Hiroko
H
Oshima
Yoshiteru
Y
Fujimoto
Yukari
Y
Ueda
Ryu
R
Takada
Haruhiko
H
Goldman
William E
WE
Fukase
Koichi
K
Silverman
Neal
N
Yoshimori
Tamotsu
T
Kurata
Shoichiro
S
D000818:Animals; D001343:Autophagy; D003960:Diaminopimelic Acid; D004330:Drosophila / Q000235:genetics / Q000254:growth & development / Q000276:immunology* / Q000378:metabolism*; D007113:Immunity, Innate / Q000276:immunology*; D008087:Listeria / Q000166:cytology / Q000276:immunology*; D010457:Peptidoglycan / Q000276:immunology / Q000378:metabolism*; D051193:Toll-Like Receptors / Q000276:immunology
D010457:Peptidoglycan; D051193:Toll-Like Receptors; D003960:Diaminopimelic Acid