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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2018 ; 9
(1
): 1200
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
BAFF-neutralizing interaction of belimumab related to its therapeutic efficacy
for treating systemic lupus erythematosus
#MMPMID29572471
Shin W
; Lee HT
; Lim H
; Lee SH
; Son JY
; Lee JU
; Yoo KY
; Ryu SE
; Rhie J
; Lee JY
; Heo YS
Nat Commun
2018[Mar]; 9
(1
): 1200
PMID29572471
show ga
BAFF, a member of the TNF superfamily, has been recognized as a good target for
autoimmune diseases. Belimumab, an anti-BAFF monoclonal antibody, was approved by
the FDA for use in treating systemic lupus erythematosus. However, the molecular
basis of BAFF neutralization by belimumab remains unclear. Here our crystal
structure of the BAFF-belimumab Fab complex shows the precise epitope and the
BAFF-neutralizing mechanism of belimumab, and demonstrates that the therapeutic
activity of belimumab involves not only antagonizing the BAFF-receptor
interaction, but also disrupting the formation of the more active BAFF 60-mer to
favor the induction of the less active BAFF trimer through interaction with the
flap region of BAFF. In addition, the belimumab HCDR3 loop mimics the DxL(V/L)
motif of BAFF receptors, thereby binding to BAFF in a similar manner as
endogenous BAFF receptors. Our data thus provides insights for the design of new
drugs targeting BAFF for the treatment of autoimmune diseases.