This antibody (clone Hu3s193) is a humanized mAb recognizing Lewis Y. Hu3s193 binds preferentially to the Lewis Y positive cells, not to normal tissue.
Figure 1 Whole body scintigraphic images of radiolabeled 111In-CHX-A'-DTPA-hu3S193 in an athymic BALB/c nude mouse bearing s.c. MCF-7 (breast) tumor in the left flank (right side of image) and SW1222 colon tumor in the right flank (left side of image).
Dorsal images were taken at 10 min (A), 24 h (B), 72 h (C), and 120 h (D) after injection of radiolabeled hu3S193, with the mouse supine on the gamma camera. A standard of known activity was included in the field of view and is visible in the upper left quadrant of each image.
Clarke, K., Lee, F. T., Brechbiel, M. W., Smyth, F. E., Old, L. J., & Scott, A. M. (2000). In vivo biodistribution of a humanized anti-Lewis Y monoclonal antibody (hu3S193) in MCF-7 xenografted BALB/c nude mice. Cancer research, 60(17), 4804-4811.
Figure 2 The 125I/111In-hu3S193 biodistribution study.
Distribution of 125I/111In radiolabeled hu3S193 in an MCF-7 tumor xenograft 120 h after antibody injection as determined by autoradiography (A). Localization of radiolabel is compared with the location of viable tumor cells by H&E staining (B) and to antigen distribution as shown by immunohistochemistry (C). D is a control slide for antigen detection in which huA33 was applied as the primary antibody instead of hu3S193, and negligible staining was noted.
Clarke, K., Lee, F. T., Brechbiel, M. W., Smyth, F. E., Old, L. J., & Scott, A. M. (2000). In vivo biodistribution of a humanized anti-Lewis Y monoclonal antibody (hu3S193) in MCF-7 xenografted BALB/c nude mice. Cancer research, 60(17), 4804-4811.
Figure 3 Small-cell lung cancer tumors showing 1 (A) or 4 (B) immunohistochemical staining with mu3S193.
Immunohistochemical staining with mu3S193.
Krug, L. M., Milton, D. T., Jungbluth, A. A., Chen, L. C., Quaia, E., Pandit-Taskar, N., ... & Smith-Jones, P. (2007). Targeting Lewis Y (LeY) in small cell lung cancer with a humanized monoclonal antibody, hu3S193: a pilot trial testing two dose levels. Journal of Thoracic Oncology, 2(10), 947-952.
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• Increased sensitivity
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CAT | Product Name | Application | Type |
---|---|---|---|
NAB-1634-VHH | Recombinant Anti-Human Lewis Y VHH Single Domain Antibody | WB, IP, ChiP, Neut, ELISA | Llama VHH |
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