TY - JOUR
T1 - Cross-species reactive monoclonal antibodies against the extracellular domains of the insulin receptor and IGF1 receptor
AU - Ørstrup, Laura Hvidsten
AU - Slaaby, Rita
AU - Rasch, Morten Grønbech
AU - Rasmussen, Nicolaj
AU - Lund, Søren
AU - Brandt, Jakob
AU - Schluckebier, Gerd
AU - Wang, Zhe
AU - Lützen, Anne
AU - Pedersen, Thomas Åskov
AU - Hvid, Henning
AU - Hansen, Bo Falck
AU - Blume, Niels
PY - 2019
Y1 - 2019
N2 - Translation across species of immunoassay results is often challenging due to the lack of cross-species reactivity of antibodies. In order to investigate the biology of insulin and IGF1 receptors, we generated new versatile monoclonal assay antibodies using the extracellular domain of the insulin/IGF1 hybrid receptor as the bait protein in the Adimab yeast antibody discovery platform and as the antigen in a rabbit monoclonal antibody platform. The resulting antibody clones were screened for receptor specificity as well as cross-species reactivity to both tissue and cell line derived samples. Using these strategies, we were able to identify highly specific insulin receptor monoclonal antibodies that lack cross-reactivity to the IGF1 receptor using the Adimab platform and a highly specific IGF1 receptor monoclonal antibody that lacks cross-reactivity to the insulin receptor using the rabbit antibody platform. Unlike earlier monoclonal antibodies reported in the literature, these antibodies show cross-species reactivity to the extracellular domains of mouse, rat, pig, and human receptors, indicating that they bind conserved epitopes. Furthermore, the antibodies work well in several different assay formats, including ELISA, flow cytometry, and immunoprecipitation, and therefore provide new tools to study insulin and IGF1 receptor biology with translation across several species and experimental model systems.
AB - Translation across species of immunoassay results is often challenging due to the lack of cross-species reactivity of antibodies. In order to investigate the biology of insulin and IGF1 receptors, we generated new versatile monoclonal assay antibodies using the extracellular domain of the insulin/IGF1 hybrid receptor as the bait protein in the Adimab yeast antibody discovery platform and as the antigen in a rabbit monoclonal antibody platform. The resulting antibody clones were screened for receptor specificity as well as cross-species reactivity to both tissue and cell line derived samples. Using these strategies, we were able to identify highly specific insulin receptor monoclonal antibodies that lack cross-reactivity to the IGF1 receptor using the Adimab platform and a highly specific IGF1 receptor monoclonal antibody that lacks cross-reactivity to the insulin receptor using the rabbit antibody platform. Unlike earlier monoclonal antibodies reported in the literature, these antibodies show cross-species reactivity to the extracellular domains of mouse, rat, pig, and human receptors, indicating that they bind conserved epitopes. Furthermore, the antibodies work well in several different assay formats, including ELISA, flow cytometry, and immunoprecipitation, and therefore provide new tools to study insulin and IGF1 receptor biology with translation across several species and experimental model systems.
KW - Cross-species translation
KW - Diabetes
KW - Hybrid receptor
KW - IGF1 receptor
KW - Insulin receptor
KW - Monoclonal antibodies
U2 - 10.1016/j.jim.2018.11.014
DO - 10.1016/j.jim.2018.11.014
M3 - Journal article
C2 - 30500329
AN - SCOPUS:85057458320
SN - 0022-1759
VL - 465
SP - 20
EP - 26
JO - Journal of Immunological Methods
JF - Journal of Immunological Methods
ER -
