Denosumab mimics the natural decoy receptor osteoprotegerin by interacting with its major binding site on RANKL
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Denosumab mimics the natural decoy receptor osteoprotegerin by interacting with its major binding site on RANKL. / Schieferdecker, Aneta; Voigt, Mareike; Riecken, Kristoffer; Braig, Friederike; Schinke, Thorsten; Loges, Sonja; Bokemeyer, Carsten; Fehse, Boris; Binder, Mascha.
In: ONCOTARGET, Vol. 5, No. 16, 30.08.2014, p. 6647-53.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Denosumab mimics the natural decoy receptor osteoprotegerin by interacting with its major binding site on RANKL
AU - Schieferdecker, Aneta
AU - Voigt, Mareike
AU - Riecken, Kristoffer
AU - Braig, Friederike
AU - Schinke, Thorsten
AU - Loges, Sonja
AU - Bokemeyer, Carsten
AU - Fehse, Boris
AU - Binder, Mascha
PY - 2014/8/30
Y1 - 2014/8/30
N2 - Bone homeostasis critically relies on the RANKL-RANK-OPG axis which can be targeted by the fully human monoclonal antibody denosumab in conditions with increased bone resporption such as bone metastases. The binding site and therefore the molecular mechanism by which this antibody inhibits RANKL has not been characterized so far. Here, we used random peptide phage display library screenings to identify the denosumab epitope on RANKL. Alignments of phage derived peptide sequences with RANKL suggested that this antibody recognized a linear epitope between position T233 and Y241. Mutational analysis confirmed the core residues as critical for this interaction. The spatial localization of this epitope on a 3-dimensional model of RANKL showed that it overlapped with the major binding sites of OPG and RANK on RANKL. We conclude that denosumab inhibits RANKL by both functional and molecular mimicry of the natural decoy receptor OPG.
AB - Bone homeostasis critically relies on the RANKL-RANK-OPG axis which can be targeted by the fully human monoclonal antibody denosumab in conditions with increased bone resporption such as bone metastases. The binding site and therefore the molecular mechanism by which this antibody inhibits RANKL has not been characterized so far. Here, we used random peptide phage display library screenings to identify the denosumab epitope on RANKL. Alignments of phage derived peptide sequences with RANKL suggested that this antibody recognized a linear epitope between position T233 and Y241. Mutational analysis confirmed the core residues as critical for this interaction. The spatial localization of this epitope on a 3-dimensional model of RANKL showed that it overlapped with the major binding sites of OPG and RANK on RANKL. We conclude that denosumab inhibits RANKL by both functional and molecular mimicry of the natural decoy receptor OPG.
M3 - SCORING: Journal article
C2 - 25138051
VL - 5
SP - 6647
EP - 6653
JO - ONCOTARGET
JF - ONCOTARGET
SN - 1949-2553
IS - 16
ER -