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2014 ; 23
(12
): 1698-707
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Structures of a pan-specific antagonist antibody complexed to different isoforms
of TGF? reveal structural plasticity of antibody-antigen interactions
#MMPMID25209176
Moulin A
; Mathieu M
; Lawrence C
; Bigelow R
; Levine M
; Hamel C
; Marquette JP
; Le Parc J
; Loux C
; Ferrari P
; Capdevila C
; Dumas J
; Dumas B
; Rak A
; Bird J
; Qiu H
; Pan CQ
; Edmunds T
; Wei RR
Protein Sci
2014[Dec]; 23
(12
): 1698-707
PMID25209176
show ga
Various important biological pathways are modulated by TGF? isoforms; as such
they are potential targets for therapeutic intervention. Fresolimumab, also known
as GC1008, is a pan-TGF? neutralizing antibody that has been tested clinically
for several indications including an ongoing trial for focal segmental
glomerulosclerosis. The structure of the antigen-binding fragment of fresolimumab
(GC1008 Fab) in complex with TGF?3 has been reported previously, but the
structural capacity of fresolimumab to accommodate tight interactions with TGF?1
and TGF?2 was insufficiently understood. We report the crystal structure of the
single-chain variable fragment of fresolimumab (GC1008 scFv) in complex with
target TGF?1 to a resolution of 3.00 Å and the crystal structure of GC1008 Fab in
complex with TGF?2 to 2.83 Å. The structures provide further insight into the
details of TGF? recognition by fresolimumab, give a clear indication of the
determinants of fresolimumab pan-specificity and provide potential starting
points for the development of isoform-specific antibodies using a fresolimumab
scaffold.