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For the first time it was evaluated the biodistribution of recombinant heat shock protein in rhHsp70 rats with grafted intracranial C6 glioma. It was assessed using the fluorescent antibody accumulation chaperone rhHsp70 conjugated with fluorochrome Alexa Fluor ® 555 in tumor cells by intratumoral or intravenous administration. Assessment of the distribution and accumulation of labeled protein was carried out on the model of subcutaneous B16/F10 melanoma in C57BL/6 mice with the use of single-photon emission computer tomography. After 60 minutes after intravenous administration rhHsp70-I 123 (20 MBq, 5 mg chaperone) accumulation of the drug mainly in the liver and tumor tissue was showed. The coefficient of the differential accumulation of the labeled protein KDN tumor/background was 3.14. It was turned out that comparing the level of fixation of rhHsp70-I 123 in the liver and the tumor KDN tumor/liver = 0.76. After 24 hours from the time of injection of rhHsp70-I 123 it was observed increase the level of fixation of the labeled protein in the liver and melanoma: KDN tumor/background = 3.43; KDN tumor/liver =0.78.References
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