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Title: | Localization of radiolabeled monoclonal antibodies in thyroid tumor xenografts |
Authors: | Damle, Archana A Narkar, Archana A Shah, Damayanti H |
Keywords: | Monoclonal antibodies;Thyroglobulin;Thyroid tumor xenograft |
Issue Date: | Apr-2004 |
Publisher: | NISCAIR-CSIR, India |
IPC Code: | Int. Cl.7 A61 K51/10 |
Abstract: | Monoclonal antibodies to human thyroglobulin were produced using the hybridoma technique. Two monoclonal antibodies D5I and F9I were radiolabeled with 125I and used for radioimmunolocalization studies in an immunosuppressed animal model bearing xenografts of human thyroid tumor tissue. Biodistribution studies were carried out at various time intervals post-injection. Maximum tumor uptake was obtained at 72 hr after administration of the antibodies. The absolute tumor uptake (ATU) expressed as percentage of injected dose per gram of tissue (% ID/g) was 15.49 ± 2.47, 4.51 ± 0.69 and 2.50 ±0.41 for D5I, F9I and control Igs respectively. The tumor to blood ratios (T/B) obtained were 3.01 ± 0.43 for OSI, 0.98±0.2 for F91 and 0.47 ± 0.12 for control Igs. ATU as well as TIB ratio obtained with D5I was significantly higher as compared to F9I and control Igs. The results indicated the potential application of radiolabeled monoclonal antibodies to human thyroglobulin for tumor targetting in patients of differentiated thyroid carcinoma, particularly those metastases which did not concentrate radioiodine. |
Page(s): | 354-360 |
ISSN: | 0975-1009 (Online); 0019-5189 (Print) |
Appears in Collections: | IJEB Vol.42(04) [April 2004] |
Files in This Item:
File | Description | Size | Format | |
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IJEB 42(4) 354-360.pdf | 1.8 MB | Adobe PDF | View/Open |
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