Engineering:Targeted alpha-particle therapy

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Targeted alpha-particle therapy (or TAT) is an in-development method of targeted radionuclide therapy of various cancers. It employs radioactive substances which undergo alpha decay to treat diseased tissue at close proximity.[1] It has the potential to provide highly targeted treatment, especially to microscopic tumour cells. Targets include leukemias, lymphomas, gliomas, melanoma, and peritoneal carcinomatosis.[2] As in diagnostic nuclear medicine, appropriate radionuclides can be chemically bound to a targeting biomolecule which carries the combined radiopharmaceutical to a specific treatment point.[3] It has been said that "α-emitters are indispensable with regard to optimisation of strategies for tumour therapy".[4]

Advantages of alpha emitters

Comparison of range of α (red) and β− (white) particles

The primary advantage of alpha particle (α) emitters over other types of radioactive sources is their very high linear energy transfer (LET) and relative biological effectiveness (RBE).[5] Beta particle (β) emitters such as yttrium-90 can travel considerable distances beyond the immediate tissue before depositing their energy, while alpha particles deposit their energy in 70–100 μm long tracks.[6]

Alpha particles are more likely than other types of radiation to cause double-strand breaks to DNA molecules, which is one of several effective causes of cell death.[7][8]

Production

Some α emitting isotopes such as 225Ac and 213Bi are only available in limited quantities from 229Th decay, although cyclotron production is feasible.[9][10][11] Among alpha-emitting radiometals according to availability, chelation chemistry, and half-life, 212Pb is also a promising candidate for targeted alpha-therapy.[12][13]

The ARRONAX cyclotron can produce 211At by irradiation of 209Bi.[14][9]

Applications

Though many α-emitters exist, useful isotopes would have a sufficient energy to cause damage to cancer cells, and a half-life that is long enough to provide a therapeutic dose without remaining long enough to damage healthy tissue.

Immunotherapy

Several radionuclides have been studied for use in immunotherapy. Though β-emitters are more popular, in part due to their availability, trials have taken place involving 225Ac, 211At, 212Pb and 213Bi.[9]

Peritoneal carcinomas

Treatment of peritoneal carcinomas has promising early results limited by availability of α-emitters compared to β-emitters.[4]

Bone metastases

223Ra was the first α-emitter approved by the FDA in the United States for treatment of bone metastases from prostate cancer, and is a recommended treatment in the UK by NICE.[3][15] In a phase III trial comparing 223Ra to a placebo, survival was significantly improved.[16]

Leukaemia

Early trials of 225Ac and 213Bi have shown evidence of anti-tumour activity in Leukaemia patients.[17]

Melanomas

Phase I trials on melanomas have shown 213Bi is effective in causing tumour regression.[18][19]

Solid tumours

The short path length of alpha particles in tissue, which makes them well suited to treatment of the above types of disease, is a negative when it comes to treatment of larger bodies of solid tumour by intravenous injection.[20][21] Potential methods to solve this problem of delivery exist, such as direct intratumoral injection[22] and anti-angiogenic drugs.[23][3] Limited treatment experience of low grade malignant gliomas has shown possible efficacy.[24]

See also

References

  1. ↑ Committee on State of the Science of Nuclear Medicine; National Research Council; Division on Earth and Life Studies; Institute of Medicine; Nuclear and Radiation Studies Board; Board on Health Sciences Policy (2007). "Targeted Radionuclide Therapy". Advancing nuclear medicine through innovation. Washington, D.C.: National Academies Press. doi:10.17226/11985. ISBN 978-0-309-11067-9. https://www.ncbi.nlm.nih.gov/books/NBK11464/. 
  2. ↑ Mulford, DA; Scheinberg, DA; Jurcic, JG (January 2005). "The promise of targeted {alpha}-particle therapy.". Journal of Nuclear Medicine 46 (Suppl 1): 199S–204S. PMID 15653670. http://jnm.snmjournals.org/content/46/1_suppl/199S.long. 
  3. ↑ 3.0 3.1 3.2 Dekempeneer, Yana; Keyaerts, Marleen; Krasniqi, Ahmet; Puttemans, Janik; Muyldermans, Serge; Lahoutte, Tony; D’huyvetter, Matthias; Devoogdt, Nick (19 May 2016). "Targeted alpha therapy using short-lived alpha-particles and the promise of nanobodies as targeting vehicle". Expert Opinion on Biological Therapy 16 (8): 1035–1047. doi:10.1080/14712598.2016.1185412. PMID 27145158. 
  4. ↑ 4.0 4.1 Seidl, Christof; Senekowitsch-Schmidtke, Reingard (2011). "Targeted Alpha Particle Therapy of Peritoneal Carcinomas". in Baum, Richard P.. Therapeutic nuclear medicine. Berlin: Springer. pp. 557–567. doi:10.1007/174_2012_678. ISBN 978-3-540-36718-5. 
  5. ↑ Kane, Suzanne Amador (2003). Introduction to physics in modern medicine (Repr. ed.). London: Taylor & Francis. p. 243. ISBN 9780415299633. 
  6. ↑ Elgqvist, Jörgen; Frost, Sofia; Pouget, Jean-Pierre; Albertsson, Per (2014). "The Potential and Hurdles of Targeted Alpha Therapy – Clinical Trials and Beyond". Frontiers in Oncology 3: 324. doi:10.3389/fonc.2013.00324. PMID 24459634. 
  7. ↑ Baum, Richard P (2014). Therapeutic Nuclear Medicine. Heidelberg: Springer. p. 98. ISBN 9783540367192. 
  8. ↑ Hodgkins, Paul S.; O'Neill, Peter; Stevens, David; Fairman, Micaela P. (December 1996). "The Severity of Alpha-Particle-Induced DNA Damage Is Revealed by Exposure to Cell-Free Extracts". Radiation Research 146 (6): 660–7. doi:10.2307/3579382. PMID 8955716. Bibcode: 1996RadR..146..660H. 
  9. ↑ 9.0 9.1 9.2 Seidl, Christof (April 2014). "Radioimmunotherapy with α-particle-emitting radionuclides". Immunotherapy 6 (4): 431–458. doi:10.2217/imt.14.16. PMID 24815783. 
  10. ↑ Apostolidis, C.; Molinet, R.; McGinley, J.; Abbas, K.; Möllenbeck, J.; Morgenstern, A. (March 2005). "Cyclotron production of Ac-225 for targeted alpha therapy". Applied Radiation and Isotopes 62 (3): 383–387. doi:10.1016/j.apradiso.2004.06.013. PMID 15607913. 
  11. ↑ Miederer, Matthias; Scheinberg, David A.; McDevitt, Michael R. (September 2008). "Realizing the potential of the Actinium-225 radionuclide generator in targeted alpha particle therapy applications". Advanced Drug Delivery Reviews 60 (12): 1371–1382. doi:10.1016/j.addr.2008.04.009. PMID 18514364. 
  12. ↑ Kokov, K.V.; Egorova, B.V.; German, M.N.; Klabukov, I.D.; Krasheninnikov, M.E.; Larkin-Kondrov, A.A.; Makoveeva, K.A.; Ovchinnikov, M.V. et al. (2022). "212Pb: Production Approaches and Targeted Therapy Applications". Pharmaceutics 14 (1): 189. doi:10.3390/pharmaceutics14010189. ISSN 1999-4923. PMID 35057083. 
  13. ↑ Yang, Hua; Wilson, Justin J.; Orvig, Chris; Li, Yawen; Wilbur, D. Scott; Ramogida, Caterina F.; Radchenko, Valery; Schaffer, Paul (2022). "Harnessing α-Emitting Radionuclides for Therapy: Radiolabeling Method Review". Journal of Nuclear Medicine 63 (1): 5–13. doi:10.2967/jnumed.121.262687. ISSN 1535-5667. PMID 34503958. 
  14. ↑ Haddad, Ferid; Barbet, Jacques; Chatal, Jean-Francois (1 July 2011). "The ARRONAX Project". Current Radiopharmaceuticals 4 (3): 186–196. doi:10.2174/1874471011104030186. PMID 22201708. 
  15. ↑ "Radium-223 dichloride for treating hormone-relapsed prostate cancer with bone metastases". 28 September 2016. https://www.nice.org.uk/guidance/ta412/chapter/1-recommendations. Retrieved 19 December 2016. 
  16. ↑ Parker, C.; Nilsson, S.; Heinrich, D.; Helle, S.I.; O'Sullivan, J.M.; Fosså, S.D.; Chodacki, A.; Wiechno, P. et al. (18 July 2013). "Alpha Emitter Radium-223 and Survival in Metastatic Prostate Cancer". New England Journal of Medicine 369 (3): 213–223. doi:10.1056/NEJMoa1213755. PMID 23863050. 
  17. ↑ Jurcic, Joseph G.; Rosenblat, Todd L. (2014). "Targeted Alpha-Particle Immunotherapy for Acute Myeloid Leukemia". American Society of Clinical Oncology Educational Book 34 (34): e126–e131. doi:10.14694/EdBook_AM.2014.34.e126. PMID 24857092. 
  18. ↑ Allen, Barry J; Raja, Chand; Rizvi, Syed; Li, Yong; Tsui, Wendy; Zhang, David; Song, Emma; Qu, Chang Fa et al. (21 August 2004). "Targeted alpha therapy for cancer". Physics in Medicine and Biology 49 (16): 3703–3712. doi:10.1088/0031-9155/49/16/016. PMID 15446799. Bibcode: 2004PMB....49.3703A. 
  19. ↑ Kim, Young-Seung; Brechbiel, Martin W. (6 December 2011). "An overview of targeted alpha therapy". Tumor Biology 33 (3): 573–590. doi:10.1007/s13277-011-0286-y. PMID 22143940. PMC 7450491. https://zenodo.org/record/1232972. 
  20. ↑ Larson, Steven M.; Carrasquillo, Jorge A.; Cheung, Nai-Kong V.; Press, Oliver W. (22 May 2015). "Radioimmunotherapy of human tumours". Nature Reviews Cancer 15 (6): 347–360. doi:10.1038/nrc3925. PMID 25998714. 
  21. ↑ Sofou, S (2008). "Radionuclide carriers for targeting of cancer.". International Journal of Nanomedicine 3 (2): 181–99. doi:10.2147/ijn.s2736. PMID 18686778. 
  22. ↑ Arazi, L; Cooks, T; Schmidt, M; Keisari, Y; Kelson, I (21 August 2007). "Treatment of solid tumors by interstitial release of recoiling short-lived alpha emitters". Physics in Medicine and Biology 52 (16): 5025–5042. doi:10.1088/0031-9155/52/16/021. PMID 17671351. Bibcode: 2007PMB....52.5025A. 
  23. ↑ Huang, Chen-Yu; Pourgholami, Mohammad H.; Allen, Barry J. (November 2012). "Optimizing radioimmunoconjugate delivery in the treatment of solid tumor". Cancer Treatment Reviews 38 (7): 854–860. doi:10.1016/j.ctrv.2011.12.005. PMID 22226242. 
  24. ↑ Cordier, Dominik; Krolicki, Leszek; Morgenstern, Alfred; Merlo, Adrian (May 2016). "Targeted Radiolabeled Compounds in Glioma Therapy". Seminars in Nuclear Medicine 46 (3): 243–249. doi:10.1053/j.semnuclmed.2016.01.009. PMID 27067505. 



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