Recombinant Human Antibody (1C1) is capable of binding to EphA2, expressed in HEK 293 cells. Expressed as the combination of a heavy chain (HC) containing VH from anti-EphA2 mAb and CH1-3 region of human IgG1 and a light chain (LC) encoding VL from anti-EphA2 mAb and CL of human kappa light chain. Exists as a disulfide linked dimer of the HC and LC hetero-dimer under non-reducing condition.
Figure 1 Internalization of human EphA2 following incubation with anti-human EphA2 antibodies. mAb and Fab 1C1 efficiently internalize human EphA2, whereas mAbs 3F2 and 1C9 induce only weak to no internalization at 37 °C. No internalization of the antibodies was observed at 4 °C.
Peng, L., Oganesyan, V., Damschroder, M. M., Wu, H., & Dall'Acqua, W. F. (2011). Structural and functional characterization of an agonistic anti-human EphA2 monoclonal antibody. Journal of molecular biology, 413(2), 390-405.
Figure 2 Identification of non-competing anti-EphA2 mAbs.
(A) Histograms for EphA2-positive cell lines HEC-1-A and PC-3 first stained with unlabeled EphA2 mAb 1C1 or 3035, an IgG control, or buffer only, followed by staining with either labeled 1C1 (1C1-A488) or 3035 (3035-A488). A488 fluorescence is detected by conducting flow cytometry on 10,000 live, single cells.
Liao-Chan, S., Daine-Matsuoka, B., Heald, N., Wong, T., Lin, T., Cai, A. G.,... & Theunissen, J. W. (2015). Quantitative assessment of antibody internalization with novel monoclonal antibodies against alexa fluorophores. PloS one, 10(4), e0124708.
Figure 3 Fluorescence-activated cell-sorting analysis of binding of 1C1 to human EphA2 and EphA4 variants transiently expressed on the surface of HEK 293F cells. Expression of those variants was monitored using a cocktail of antibodies recognizing both human EphA2 and EphA4. MFI, mean fluorescence intensity; SSC, side scatter characteristics.
Peng, L., Oganesyan, V., Damschroder, M. M., Wu, H., & Dall'Acqua, W. F. (2011). Structural and functional characterization of an agonistic anti-human EphA2 monoclonal antibody. Journal of molecular biology, 413(2), 390-405.
Figure 4 Direct binding of 1C1 to sEphA2/ECD, sEphA2/LBD, and sEphA4/LBD-EphA2 variants by ELISA. EphA2 LBD contains the 1C1 epitope. Standard deviations are indicated by error bars and represent triplicate measurements within the same experiment.
Peng, L., Oganesyan, V., Damschroder, M. M., Wu, H., & Dall'Acqua, W. F. (2011). Structural and functional characterization of an agonistic anti-human EphA2 monoclonal antibody. Journal of molecular biology, 413(2), 390-405.
Figure 5 Induction of EphA2 phosphorylation (a) and degradation (b) by anti-human EphA2 antibodies. mAb and Fab 1C1 trigger efficient phosphorylation and degradation of human EphA2, whereas mAbs 3F2 and 1C9 exhibit only weak to no activity.
Peng, L., Oganesyan, V., Damschroder, M. M., Wu, H., & Dall'Acqua, W. F. (2011). Structural and functional characterization of an agonistic anti-human EphA2 monoclonal antibody. Journal of molecular biology, 413(2), 390-405.
Figure 6 Competition binding of anti-human EphA2 antibodies to sEphA2/ECD. 1C1 binds to an epitope distinct from that of 1C9 and 3F2.
Peng, L., Oganesyan, V., Damschroder, M. M., Wu, H., & Dall'Acqua, W. F. (2011). Structural and functional characterization of an agonistic anti-human EphA2 monoclonal antibody. Journal of molecular biology, 413(2), 390-405.
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CAT | Product Name | Application | Type |
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TAB-381MZ | Anti-Human EPHA2 Recombinant Antibody (LUCA40) | FC | |
TAB-382MZ | Anti-Human EPHA2 Recombinant Antibody (SPL1) | IHC, WB, sELISA | |
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TAB-384MZ | Mouse Anti-EPHA2 Recombinant Antibody (TAB-384MZ) | ELISA | Mouse IgG |
TAB-380MZ-S(P) | Mouse Anti-EPHA2 Recombinant Antibody; scFv Fragment (TAB-380MZ-S(P)) | IHC, WB, sELISA | Mouse scFv |
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