PMID- 20124448 OWN - NLM STAT- MEDLINE DCOM- 20101110 LR - 20200930 IS - 1538-8514 (Electronic) IS - 1535-7163 (Linking) VI - 9 IP - 2 DP - 2010 Feb TI - Biochemical characterization of AMG 102: a neutralizing, fully human monoclonal antibody to human and nonhuman primate hepatocyte growth factor. PG - 400-9 LID - 10.1158/1535-7163.MCT-09-0824 [doi] AB - AMG 102 is a fully human monoclonal antibody that selectively targets and neutralizes hepatocyte growth factor/scatter factor (HGF/SF). A detailed biochemical and functional characterization of AMG 102 was done to support its clinical development for the treatment of cancers dependent on signaling through the HGF/SF:c-Met pathway. In competitive equilibrium binding experiments, AMG 102 bound to human and cynomolgus monkey HGF with affinities of approximately 19 pmol/L and 41 pmol/L, respectively. However, AMG 102 did not detect mouse or rabbit HGF on immunoblots. Immunoprecipitation experiments showed that AMG 102 preferentially bound to the mature, active form of HGF, and incubation of AMG 102/HGF complexes with kallikrein protease indicated that AMG 102 had no apparent effect on proteolytic processing of the inactive HGF precursor. AMG 102 inhibited human and cynomolgus monkey HGF-induced c-Met autophosphorylation in PC3 cells with IC(50) values of 0.12 nmol/L and 0.24 nmol/L, respectively. AMG 102 also inhibited cynomolgus monkey HGF-induced migration of human MDA-MB-435 cells but not rat HGF-induced migration of mouse 4T1 cells. Epitope-mapping studies of recombinant HGF molecules comprising human/mouse chimeras and human-to-mouse amino acid substitutions showed that amino acid residues near the NH(2)-terminus of the beta-chain are critical for AMG 102 binding. Bound AMG 102 protected one trypsin protease cleavage site near the NH(2)-terminus of the beta-chain of human HGF, further substantiating the importance of this region for AMG 102 binding. Currently, AMG 102 is in phase II clinical trials in a variety of solid tumor indications. Mol Cancer Ther; 9(2); 400-9. FAU - Burgess, Teresa L AU - Burgess TL AD - Amgen Inc., Thousand Oaks, California 91320-1799, USA. tburgess@amgen.com FAU - Sun, Jan AU - Sun J FAU - Meyer, Susanne AU - Meyer S FAU - Tsuruda, Trace S AU - Tsuruda TS FAU - Sun, Jilin AU - Sun J FAU - Elliott, Gary AU - Elliott G FAU - Chen, Qing AU - Chen Q FAU - Haniu, Mitsuru AU - Haniu M FAU - Barron, Will F AU - Barron WF FAU - Juan, Todd AU - Juan T FAU - Zhang, Ke AU - Zhang K FAU - Coxon, Angela AU - Coxon A FAU - Kendall, Richard L AU - Kendall RL LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100202 PL - United States TA - Mol Cancer Ther JT - Molecular cancer therapeutics JID - 101132535 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Peptide Library) RN - 0 (Recombinant Proteins) RN - 51WEW898IJ (rilotumumab) RN - 67256-21-7 (Hepatocyte Growth Factor) SB - IM CIN - Mol Cancer Ther. 2010 May;9(5):1077-9. PMID: 20442310 MH - Animals MH - Antibodies, Monoclonal/*chemistry/pharmacology MH - Antibodies, Monoclonal, Humanized MH - Epitope Mapping MH - Hepatocyte Growth Factor/*chemistry MH - Humans MH - Immunoblotting MH - Inhibitory Concentration 50 MH - Macaca fascicularis MH - Mice MH - Peptide Library MH - Phosphorylation MH - Primates MH - Rabbits MH - Recombinant Proteins/chemistry EDAT- 2010/02/04 06:00 MHDA- 2010/11/11 06:00 CRDT- 2010/02/04 06:00 PHST- 2010/02/04 06:00 [entrez] PHST- 2010/02/04 06:00 [pubmed] PHST- 2010/11/11 06:00 [medline] AID - 1535-7163.MCT-09-0824 [pii] AID - 10.1158/1535-7163.MCT-09-0824 [doi] PST - ppublish SO - Mol Cancer Ther. 2010 Feb;9(2):400-9. doi: 10.1158/1535-7163.MCT-09-0824. Epub 2010 Feb 2.