Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\27782321
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Immunol+Rev
2016 ; 274
(1
): 152-171
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Protection of host cells by complement regulators
#MMPMID27782321
Schmidt CQ
; Lambris JD
; Ricklin D
Immunol Rev
2016[Nov]; 274
(1
): 152-171
PMID27782321
show ga
The complement cascade is an ancient immune-surveillance system that not only
provides protection from pathogen invasion but has also evolved to participate in
physiological processes to maintain tissue homeostasis. The alternative pathway
(AP) of complement activation is the evolutionarily oldest part of this innate
immune cascade. It is unique in that it is continuously activated at a low level
and arbitrarily probes foreign, modified-self, and also unaltered
self-structures. This indiscriminate activation necessitates the presence of
preformed regulators on autologous surfaces to spare self-cells from the
undirected nature of AP activation. Although the other two canonical complement
activation routes, the classical and lectin pathways, initiate the cascade more
specifically through pattern recognition, their activity still needs to be
tightly controlled to avoid excessive reactivity. It is the perpetual duty of
complement regulators to protect the self from damage inflicted by inadequate
complement activation. Here, we review the role of complement regulators as
preformed mediators of defense, explain their common and specialized functions,
and discuss selected cases in which alterations in complement regulators lead to
disease. Finally, rational engineering approaches using natural complement
inhibitors as potential therapeutics are highlighted.
|*Homeostasis
[MESH]
|*Immunity, Innate
[MESH]
|Animals
[MESH]
|Complement Inactivating Agents/therapeutic use
[MESH]
|Complement System Proteins/*immunology
[MESH]
|Drug Discovery
[MESH]
|Humans
[MESH]
|Immune System Diseases/*immunology/therapy
[MESH]