Preparation of 131I-Anti-EGFRv Ⅲ and its imaging distribution in malignant glioma-loading nude mice
10.3760/cma.j.issn.1671-8925.2016.09.003
- VernacularTitle:靶向制剂131I-Anti-EGFRvⅢ的制备及其在恶性胶质瘤裸鼠中的显像分布
- Author:
Lei AN
1
;
Danian WEI
;
Kai HUANG
;
Guanhua ZHANG
;
Yonghui ZHU
;
Tiejian LIU
;
Chengyong LIU
Author Information
1. 南方医科大学第三附属医院神经外科
- Keywords:
Glioma;
131I;
Anti-epidermal growth factor receptor vⅢ;
Radionuclide imaging
- From:
Chinese Journal of Neuromedicine
2016;15(9):878-883
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the experimental methods and conditions of 131I-labeled anti-epidermal growth factor receptor (EGFR) vⅢ preparation,and to evaluate the targeting distribution of 131I-Anti-EGFRvⅢ in malignant glioma-loading nude mice.Methods The 131I labeling on anti-EGFRvⅢ was performed by Iodogen method.The labeling rate was determined after separation and purification and paper chromatography was used for the determination of radioactive chemical purity.Twenty-eight U87-EGFRvⅢ malignant glioma-loading nude mice with glioma average diameter of 10-15 mm were chosen and randomly divided into group of 131I-Anti-EGFRvⅢ intravenous injection,group of Na131I intravenous injection,group of 131I-Anti-EGFRvⅢ intratumor injection and group of Na131I intratumor injection;7.5 MBq/0.1 mL labeled products with 131I-Anti-EGFRvⅢ or Na131I were injected in the veins or the tumors to observe the changes of the radioactivity distribution of malignant glioma-loading nude mice with SPECT imaging.Results The rate of 131I-labeled anti-EGFRvⅢ was (68.12±6.19)％,and the immediate rate of radiochemieal purity was (95.12±0.59)％,and (87.78 ±5.35)％ in room temperature and (85.12±3.58)％ in 37 ℃ serum placed for 24 h.SPECT scan showed that the tumor site had significantly stronger imaging than the thyroid gland with the labeled products either by intravenous or intratumor injection.Conclusions It is applicable to the 131I-labeled Anti-EGFRvⅢ with Iodogen method.131I-Anti-EGFRvⅢ has good radiation chemical purity and stability in vitro and in vivo,and could be combined with tumor tissue specificity.
