Basement membrane and cell integrity of self-tissues in maintaining Drosophila immunological tolerance.

Abstract:

:The mechanism underlying immune system recognition of different types of pathogens has been extensively studied over the past few decades; however, the mechanism by which healthy self-tissue evades an attack by its own immune system is less well-understood. Here, we established an autoimmune model of melanotic mass formation in Drosophila by genetically disrupting the basement membrane. We found that the basement membrane endows otherwise susceptible target tissues with self-tolerance that prevents autoimmunity, and further demonstrated that laminin is a key component for both structural maintenance and the self-tolerance checkpoint function of the basement membrane. Moreover, we found that cell integrity, as determined by cell-cell interaction and apicobasal polarity, functions as a second discrete checkpoint. Target tissues became vulnerable to blood cell encapsulation and subsequent melanization only after loss of both the basement membrane and cell integrity.

journal_name

PLoS Genet

journal_title

PLoS genetics

authors

Kim MJ,Choe KM

doi

10.1371/journal.pgen.1004683

subject

Has Abstract

pub_date

2014-10-16 00:00:00

pages

e1004683

issue

10

eissn

1553-7390

issn

1553-7404

pii

PGENETICS-D-14-00776

journal_volume

10

pub_type

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