Abstract
Objective To establish the nude mice xenograft model of papillary thyroid carcinoma with the ability to accumulate 99mTc,and to provide a tool for further study in both pathogenesis and radioactive iodine treatment of papillary thyroid carcinoma.Methods 1 × 107 cells in 200 μl suspension liquids of the human papillary thyroid carcinoma cell lines IHH-4 were inoculated into nine nude mice (five week-old female nude mice,BALB/c-nu/ nu).Tumor formation was recorded,and the size and morphology of tumor were observed by PET-CT.Emission computed tomography (ECT) was used to observe the function of 99mTc intake by xenografts.Results The percentage of the formation of xenografts in nude mice was 100.0％ (9/9).One week after the cells were injected into nude mice,visible tumors were formed.PET-CT performed by the fourth week demonstrated that tumor size was about 1.8 cm × 2.4 cm.Xenograft' image was displayed by ECT after 15 minutes of intraperitoneal injection of 99mTc.Conclusion The nude mice xenograft model of papillary thyroid carcinoma was successfully established by using the human papillary thyroid carcinoma cell lines IHH-4.The xenografts have the ability to accumulate 99mTc,thus providing a good animal model for the study of pathogenesis and radioactive iodine with treatment of papillary thyroid carcinoma. Key words: Papillary thyroid carcinoma; Tumors in nude mice model; 99mTc; Emission computed tomography
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