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Date Published: 08/07/2022
Online Published: 08/07/2022
Abstract Views: 61
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DOI: https://doi.org/10.55046/vjrnm.01.65.2021
Issue
No. 01 (2021)
Section
Scientific research
How to Cite
Nguyen Thi Kim , D., Mai Hong , S., Nguyen Khac , T., Le Ngoc, . H., Pham Dang , T., Pham Dang Tung, & Nguyen Quoc , T. (2022). Evaluation of 18fluorinfluorothymidine uptake in breast and lung-tumor bearing mice. Vietnamese Journal of Radiology and Nuclear Medicine, 01, 24 -29. https://doi.org/10.55046/vjrnm.01.65.2021

Evaluation of 18fluorinfluorothymidine uptake in breast and lung-tumor bearing mice

Nguyen Thi Kim Dung1,, Mai Hong Son1, Nguyen Khac That1, Le Ngoc Ha1, Pham Dang Tung1, Pham Dang Tung2, Nguyen Quoc Thang2
1 Nuclear Medicine Department, 108 Military Central Hospital, Hanoi 10000, Vietnam
2 Nuclear Medicine Unit, Vinmec Healthcare System, Hanoi 10000, Vietnam

Main Article Content

Abstract

Background: PET (positron emission tomography) techniques and radiopharmaceutical tracers are becoming increasingly common in clinical practice. Since 1991, 3’-deoxy-3’-18Fluorine-Fluorothymidine (18F-FLT) has been studied as a PET tracer for tumor proliferation assessment. The purpose of this study was to assess tracer uptake (%ID/g) in tumor-bearing mice and the relationship between uptake values and Ki-67 expression.
Materials and methods: two cell lines including breast cancer cell line 4T1 and lung cancer cell line LLC were inoculated into BALB/c mice. The radiotracer was then injected, and tumor resection was performed 20, 40, 60, and 90 minutes later. Gamma-ray spectrometer was used to calculate uptake values.
Results: The data show that the tumor’s %ID/g were 5.52 ± 0.23 and 4.66 ± 0.49 for the 4T1 and LLC tumors, respectively, at 90 minutes after injection. The LLC tumors presented a higher Ki-67 index than the 4T1 tumors (90.16 ± 2.93% vs 71.83 ± 3.54%).
Conclusion: In our model experiment, accumulation of the tracer in the tumor samples correlates with its malignancy which indicates that 18F-FLT could be a feasible PET tracer.

Article Details

References

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