In cooperation with the Iranian Nuclear Society

Document Type : Research Paper

Authors

Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, AEOI, P.O.Box:11365-8486, Tehran-Iran

Abstract

The present research investigates the feasibility of producing the radionuclide Lutetium-177 (177Lu) at the Tehran research reactor, TRR. 177Lu, with suitable nuclear decay characteristics and good chemical behavior, is an ideal therapeutic radionuclide. Some 177Lu-containing radiopharmaceuticals are currently applied in the treatment of various cancers, and many are under development and being tested in clinical trials in Iran. The radionuclide 177Lu can be produced either directly by the 176Lu (n,γ)177Lu reaction or indirectly by the  reaction. The irradiation yield of 177Lu in both production routes was experimentally determined for 14 days at a thermal neutron flux of 5×1013 cm-2.s-1 and was compared with the theoretical calculations. The effects of higher neutron fluxes and a reduction in 176Yb-enrichment-percentage on the produced activity/specific activity variations were assessed theoretically using MATLAB software. It was found that higher neutron fluxes led to higher activity. However, it does not impact specific activity fall rates two weeks after the end of the bombardment. In addition, a lower enrichment percentage of the target material utilized in the indirect method leads to a faster specific activity fall two weeks after the end of the bombardment.

Keywords

1. S. Shirvani Arani, M. Ghannadi-Maragheh, Translation of the book Chemistry and Analysis of Radionuclides, Laboratory Methods and Teaching Methods, Published by the Research Institute of Nuclear Sciences and Technologies, Iran, (2013) (In Persian).
 
2. T. Das, S. Banerjee, Theranostic Applications of Lutetium-177 in Radionuclide Therapy, Curradiopharm, 9(1), 94-101 (2016).
 
3. W.A. Müller, U. Linzner, E.H. Schäffer, Organ distribution studies of lutetium-177 in mouse, Int J Nucl Med Biol., 5(1), 29 (1978).
 
4. A. Ando, et al, 177Lu-EDTMP: a potential therapeutic bone agent, Nucl Med Commun, 19(6), 587 (1998).
 
5. R.F. Meredith. et al., Intraperitoneal radioimmunotherapy of ovarian cancer with lutetium-177-CC49, J. Nucl. Med., 37(9), 1491 (1996).
 
6. J. Strosberg, et al., Phase 3 Trial of 177Lu-Dotatate for Midgut Neuroendocrine Tumors, N. Engl. J. Med., 376(2), 125 (2017).
 
7. MED raysintell Nuclear Medicine Report and Directory, Edition (2019).
 
8. K. Herrmann, et al, Radiotheranostics: a roadmap for future development, Lancet Oncol., 21, e146 (2020).
 
9. A. Bahrami-Samania, et al., Production, Quality Control and Pharmacokinetic Studies of 177Lu-EDTMP for Human Bone Pain Palliation Therapy Trials, Iran J Pharm Res, 11(1), 137 (2012).
 
10. H. Yousefnia, et al., Preparation and quality control of 177Lu-[tris(1,10-phenanthroline) lutetium(III)] complex for therapy, Nuclear Med Rev., 13, 49 (2010).
 
11. H. Yousefnia, et al., Preparation and quality control of lutetium-177 bleomycin as a possible therapeutic agent, NUKLEONIKA, 55(3), 285 (2010).
 
12. H. Yousefnia, et al, Development of 177Lu-DOTA-anti-CD20 for radioimmunotherapy, J. Radioanal. Nucl. Chem., 287, 199 (2011).
 
13. H. Yousefnia, et al, Development of 177Lu-phytate Complex for Radiosynovectomy, Iran J Basic Med Sci., 16, 705 (2013).
 
14. S. Zolghadri, et al., Production, biodistribution assessment and dosimetric evaluation of 177Lu-TTHMP as an agent for bone pain palliation, Asia Oceania J Nucl Med Biol., 3(1), 35 (2015).
 
15. H. Yousefnia, et al., Absorbed dose assessment of 177Lu-zoledronate and 177Lu-EDTMP for human based on biodistribution data in rats, Journal of Medical Physics, 40, 102 (2015).
 
16. A. Fakhari, et al., Radiolabeling and evaluation of two 177Lu-labeled bis-phosphonates, Iran J Nucl Med., 23, 108 (2015).
 
17. H. Yousefnia, et al., Estimated human absorbed dose of 177Lu–BPAMD based on mice data: Comparison with 177Lu–EDTMP, Appl Radiat Isot., 104, 128 (2015).
 
18. H. Yousefnia, et al, Preparation and biodistribution assessment of low specific activity 177Lu-DOTATOC for optimization studies, Iran J Nucl Med., 24(2), 85 (2016).
 
19. N. Salek, et al, Comparative studies of extraction chromatography and electro-amalgamation separation to produce no-carrier added 177Lu by Tehran research reactor, Iran J Nucl Med., 25(1), 23-33 (2017).
 
20. N. Salek, et al, Production of 177Lu in No Carrier Added, J. of Nucl Sci. and Tech., 77, 1-8 (2016).
 
21. A. Dash, et al, Production of 177Lu for Targeted Radionuclide Therapy: Available Options, Nucl Med Mol Imaging., 49, 85 (2015).
 
22. IAEA Medical Isotope Browser, https://www-nds. Iaea.org/relnsd/isotopia/isotopia.html.