Streptavidin-ZAP [IT-27]
a tool to “piggyback” onto YOUR biotinylated material via streptavidin; targeting cells that recognize YOUR biotinylated material, eliminated via saporin
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Streptavidin-ZAP evaluates antibodies for targeted tumor treatment
Characterization of the First Fully Human Anti-Tem1 Scfv in Models of Solid Tumor Imaging and Immunotoxin-Based Therapy. Yuan, X, Yang, M, Chen, X, et al. (2018). Cancer Immunol Immunother 2018/01/10. Streptavidin-ZAP (Cat. #IT-27) Objective: ScFv78 was conjugated with the ribosome-inactivating protein saporin (Streptavidin-ZAP) to evaluate whether scFv78 may be used as a vehicle for theTEM1-targeted
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Streptavidin-Saporin key ingredient in Immunotoxin Cocktail
Streptavidin-ZAP[Streptavidin conjugated to Saporin](Cat. #IT-27) Objective: To determine if an immunotoxin cocktail targeted to multiple epitopes has synergistic effects on low expression level cells, which would expand the applicable range of immunotoxin therapy for cancer. Summary: The combination of immunotoxins with different mechanisms of action in an antibody cocktail will increase cytotoxic activities and decrease
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Screening antibodies for cancer therapeutics
Conservation of Oncofetal Antigens on Human Embryonic Stem Cells Enables Discovery of Monoclonal Antibodies against Cancer. Tan HL, Yong C, Tan BZ, Fong WJ, Padmanabhan J, Chin A, Ding V, Lau A, Zheng L, Bi X, Yang Y, & Choo A. (2018). Scientific Reports, 8 (1):11608. This study used both Hum-ZAP (Cat. #IT-22) and Streptavidin-ZAP (Cat. #IT-27)
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Targeting Tools: Top Twenty
Top Five Targeted Toxins #1. 192-IgG-SAP (192-Saporin) (Cat. #IT-01) targets cells expressing rat p75NTR #2. Anti-DBH-SAP (Cat. #IT-03) targets cells expressing rat dopamine beta-hydroxylase (DBH) #3. mu p75-SAP (Cat. #IT-16) targets cells expressing mouse p75NTR #4. IB4-SAP (Cat. #IT-10) targets cells expressing α-D-galactopyranoside residues #5. Mac-1-SAP mouse/human (Cat. #IT-06) targets cells expressing mouse / human
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Streptavidin versus Avidin
Q: I recently tried to order avidinylated-SAP (Cat. #IT-09) and was told that this product has been replaced with a new product, Streptavidin-ZAP (Cat. #IT-27). Why did you replace avidinylated-SAP? A: We initially had good results with avidinylated-SAP. It combined well with biotinylated antibody to produce extremely potent cytotoxic materials, and had low toxicity itself.
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Light-triggered, efficient cytosolic release of IM7-saporin targeting the putative cancer stem cell marker CD44 by photochemical internalization.
Bostad M, Kausberg M, Weyergang A, Olsen C, Berg K, Høgset A, Selbo P (2014) Light-triggered, efficient cytosolic release of IM7-saporin targeting the putative cancer stem cell marker CD44 by photochemical internalization. Mol Pharm 11:2764-2776. doi: 10.1021/mp500129t Summary: CD44 is known as a common cancer stem cell (CSC) marker. Given that CSC’s seem to have
Photochemical internalization (PCI) of immunotoxins targeting CD133 is specific and highly potent at femtomolar levels in cells with cancer stem cell properties.
Bostad M, Berg K, Hogset A, Skarpen E, Stenmark H, Selbo PK (2013) Photochemical internalization (PCI) of immunotoxins targeting CD133 is specific and highly potent at femtomolar levels in cells with cancer stem cell properties. J Control Release 168(3):317-326. doi: 10.1016/j.jconrel.2013.03.023 Summary: Targeted therapies for cancer can be trapped in the lysosome and compartmentalized away
Saporin toxin-conjugated monoclonal antibody targeting prostate-specific membrane antigen has potent anticancer activity.
Kuroda K, Liu H, Kim S, Guo M, Navarro V, Bander NH (2010) Saporin toxin-conjugated monoclonal antibody targeting prostate-specific membrane antigen has potent anticancer activity. Prostate 70(12):1286-1294. doi: 10.1002/pros.21164 Summary: Current treatments for prostate cancer are only moderately effective. In this work the authors examined the cytotoxic efficacy of an anti-prostate-specific membrane antigen (PMSA) antibody
Photochemical internalization of CD133-targeting immunotoxins efficiently depletes sarcoma cells with stem-like properties and reduces tumorigenicity.
Stratford EW, Bostad M, Castro R, Skarpen E, Berg K, Hogset A, Myklebost O, Selbo PK (2013) Photochemical internalization of CD133-targeting immunotoxins efficiently depletes sarcoma cells with stem-like properties and reduces tumorigenicity. Biochim Biophys Acta 1830(8):4235-4243. doi: 10.1016/j.bbagen.2013.04.033 Summary: In this work the authors used photochemical internalization (PCI) to facilitate local cytosolic toxin release from