Abstract:
:The Toll and Toll-like receptor signaling pathways are evolutionarily conserved pathways that regulate innate immunity in insects and mammals. While efforts have been made to clarify the signal transduction events that occur during infection, much less is known about the components that maintain immune quiescence. Here we show that retromer, an intracellular protein complex known for regulating vesicle trafficking, functions in modulating the Toll pathway in Drosophila melanogaster. In mutant animals lacking retromer function, the Toll pathway but not JAK-STAT or IMD pathway is activated, triggering both cellular and humoral responses. Genetic epistasis and clonal analysis suggest that retromer regulates a component that acts upstream of Toll. Our data further show that in the mutant the Toll ligand Spätzle has a processing pattern similar to that of after infection. Together, the results suggest a novel function of retromer in regulating Toll pathway and innate immunity at a step that modulates ligand processing or activity.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Zhou B,Yun EY,Ray L,You J,Ip YT,Lin Xdoi
10.1002/jcp.24472subject
Has Abstractpub_date
2014-04-01 00:00:00pages
512-520issue
4eissn
0021-9541issn
1097-4652journal_volume
229pub_type
杂志文章abstract::Guanine nucleotides and pertussis toxin were used to test for the involvement of a guanine nucleotide binding protein in the vasopressin V1 receptor-mediated stimulation of protein kinase C activity in Swiss 3T3 cells. Addition of vasopressin in the presence of [gamma-32P]ATP and digitonin caused a marked and rapid in...
journal_title:Journal of cellular physiology
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