Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\24996821
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Glycobiology
2014 ; 24
(9
): 818-25
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
The interplay between Siglecs and sialylated pathogens
#MMPMID24996821
Chang YC
; Nizet V
Glycobiology
2014[Sep]; 24
(9
): 818-25
PMID24996821
show ga
Siglecs are mammalian sialic acid (Sia) recognizing immunoglobulin-like receptors
expressed across the major leukocyte lineages, and function to recognize
ubiquitous Sia epitopes on cell surface glycoconjugates and regulate
immunological and inflammatory activities of these cells. A large subset referred
to as CD33-related Siglecs are inhibitory receptors that limit leukocyte
activation, and recent research has shown that the pathogen group B Streptococcus
(GBS) binds to these Siglecs in Sia- and protein-dependent fashion to
downregulate leukocyte bactericidal capacity. Conversely, sialoadhesin is a
macrophage phagocytic receptor that engages GBS and other sialylated pathogens to
promote effective phagocytosis and antigen presentation for the adaptive immune
response. A variety of other important Siglec interactions with bacterial, viral
and protozoan pathogens are beginning to be recognized. Siglec genes and binding
specificities are rapidly evolving among primates, with key extant polymorphisms
in human populations that may influence susceptibility to infection-associated
disorders including chronic obstructive pulmonary disease and premature birth.
This review summarizes current understanding of interactions between pathogens
and Siglecs, a field of investigation that is likely to continue expanding in
scope and medical importance.