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Qiu L, Wu J, Luo N, Xiao Q, Geng J, Xia L, Liao J, Yang Y, Liu N, Zhang J, Li F. Preparation of Medical 228Th- 224Ra Radionuclide Generator Based on SiO 2@TiO 2 Microspheres. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:11723-11731. [PMID: 38775311 DOI: 10.1021/acs.langmuir.4c01138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
224Ra (T1/2 = 3.63 d), an α-emitting radionuclide, holds significant promise in cancer endoradiotherapy. Current 224Ra-related therapy is still scarce because of the lack of reliable radionuclide supply. The 228Th-224Ra radionuclide generator can undoubtedly introduce continuous and sustainable availability of 224Ra for advanced nuclear medicine. However, conventional metal oxides for such radionuclide generators manifest suboptimal adsorption capacities for the parent nuclide, primarily attributable to their limited surface area. In this work, core-shell SiO2@TiO2 microspheres were proposed to develop as column materials for the construction of a 228Th-224Ra generator. SiO2@TiO2 microspheres were well prepared and systematically characterized, which has also been demonstrated to have good adsorption capacity to 228Th and very weak binding affinity toward 224Ra via simulated chemical separation. Upon introducing 228Th-containing solution onto the SiO2@TiO2 functional column, a 228Th-224Ra generator with excellent retention of the parent radionuclide and ideal elution efficiency of daughter radionuclide was obtained. The prepared 228Th-224Ra generator can produce 224Ra with high purity and medical usability in good elution efficiency (98.72%) even over five cycles. To the best of our knowledge, this is the first time that the core-shell mesoporous materials have been applied in a radionuclide generator, which can offer valuable insights for materials chemistry, radiochemical separation, and biological medicine.
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Affiliation(s)
- Long Qiu
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
- Sichuan Engineering Research Center for Radioactive Isotope, National Engineering Research Center for Isotopes and Pharmaceuticals, Nuclear Power Institute of China, Chengdu 610005, China
| | - Jianrong Wu
- Sichuan Engineering Research Center for Radioactive Isotope, National Engineering Research Center for Isotopes and Pharmaceuticals, Nuclear Power Institute of China, Chengdu 610005, China
| | - Ning Luo
- Sichuan Engineering Research Center for Radioactive Isotope, National Engineering Research Center for Isotopes and Pharmaceuticals, Nuclear Power Institute of China, Chengdu 610005, China
| | - Qian Xiao
- Sichuan Engineering Research Center for Radioactive Isotope, National Engineering Research Center for Isotopes and Pharmaceuticals, Nuclear Power Institute of China, Chengdu 610005, China
| | - Junshan Geng
- Sichuan Engineering Research Center for Radioactive Isotope, National Engineering Research Center for Isotopes and Pharmaceuticals, Nuclear Power Institute of China, Chengdu 610005, China
| | - Lingting Xia
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Jiali Liao
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Yuanyou Yang
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Ning Liu
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Jinsong Zhang
- Sichuan Engineering Research Center for Radioactive Isotope, National Engineering Research Center for Isotopes and Pharmaceuticals, Nuclear Power Institute of China, Chengdu 610005, China
| | - Feize Li
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
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Yang M, Liu H, Lou J, Zhang J, Zuo C, Zhu M, Zhang X, Yin Y, Zhang Y, Qin S, Zhang H, Fan X, Dang Y, Cheng C, Cheng Z, Yu F. Alpha-Emitter Radium-223 Induces STING-Dependent Pyroptosis to Trigger Robust Antitumor Immunity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307448. [PMID: 37845027 DOI: 10.1002/smll.202307448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 09/25/2023] [Indexed: 10/18/2023]
Abstract
Radium-223 (223 Ra) is the first-in-class alpha-emitter to mediate tumor eradication, which is commonly thought to kill tumor cells by directly cleaving double-strand DNA. However, the immunogenic characteristics and cell death modalities triggered by 223 Ra remain unclear. Here, it is reported that the 223 Ra irradiation induces the pro-inflammatory damage-associated molecular patterns including calreticulin, HMGB1, and HSP70, hallmarks of tumor immunogenicity. Moreover, therapeutic 223 Ra retards tumor progression by triggering pyroptosis, an immunogenic cell death. Mechanically, 223 Ra-induced DNA damage leads to the activation of stimulator of interferon genes (STING)-mediated DNA sensing pathway, which is critical for NLRP3 inflammasome-dependent pyroptosis and subsequent DCs maturation as well as T cell activation. These findings establish an essential role of STING in mediating alpha-emitter 223 Ra-induced antitumor immunity, which provides the basis for the development of novel cancer therapeutic strategies and combinatory therapy.
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Affiliation(s)
- Mengdie Yang
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
- Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, 200072, China
| | - Haipeng Liu
- Clinical Translation Research Center, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, 200433, China
| | - Jingjing Lou
- Department of Nuclear Medicine, Pudong Medical Center, Fudan University, Shanghai, 201399, China
| | - Jiajia Zhang
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
- Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, 200072, China
| | - Changjing Zuo
- Department of Nuclear Medicine, the First Affiliated Hospital of Navy Medical University (Changhai Hospital), Shanghai, 200433, China
| | - Mengqin Zhu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
- Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, 200072, China
| | - Xiaoyi Zhang
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
- Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, 200072, China
| | - Yuzhen Yin
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
- Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, 200072, China
| | - Yu Zhang
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
- Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, 200072, China
| | - Shanshan Qin
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
- Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, 200072, China
| | - Han Zhang
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
- Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, 200072, China
| | - Xin Fan
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
- Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, 200072, China
| | - Yifang Dang
- Clinical Translation Research Center, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, 200433, China
| | - Chao Cheng
- Department of Nuclear Medicine, the First Affiliated Hospital of Navy Medical University (Changhai Hospital), Shanghai, 200433, China
| | - Zhen Cheng
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
- State Key Laboratory of Drug Research, Molecular Imaging Center, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, Shandong, 264117, China
| | - Fei Yu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
- Institute of Nuclear Medicine, Tongji University School of Medicine, Shanghai, 200072, China
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Sakmár M, Kozempel J, Kučka J, Janská T, Štíbr M, Vlk M, Šefc L. Biodistribution study of 211Pb progeny released from intravenously applied 223Ra labelled TiO 2 nanoparticles in a mouse model. Nucl Med Biol 2024; 130-131:108890. [PMID: 38402673 DOI: 10.1016/j.nucmedbio.2024.108890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/29/2024] [Accepted: 02/16/2024] [Indexed: 02/27/2024]
Abstract
BACKGROUND Targeted alpha therapy is one of the most powerful therapeutical modalities available in nuclear medicine. It's therapeutic potency is based on the nuclides that emit one or several alpha particles providing strong and highly localized therapeutic effects. However, some of these radionuclides, like e.g.223Ra or 225Ac decay in cascades, where the radioactive progeny originating from the consecutive alpha-decays may leave the original vector and cause unwanted irradiation of non-target organs. This progeny, even if partially retained in target tissues by internalization processes, typically do not follow the fate of originally targeted radiopharmaceutical and potentially spread over body following their own biodistribution. In this study we aimed to estimate 211Pb/211Bi progeny fate from the 223Ra surface-labelled TiO2 nanoparticles in vitro and the fate of 211Pb in vivo in a mice model. RESULTS In vitro stability studies have shown significant differences between the release of the mother 223Ra and its progeny (211Pb, 211Bi) in all the biological matrices that have been tested. The lowest released activities were measured in saline, resulting in less than 5 % of released activity for all nuclides. Contrary to that, the highest released activity of 223Ra of up to 10 % within 48 h was observed in 5 % solution of albumin. The released activity of its progeny; the 211Pb and 211Bi was in the range of 20-40 % in this test medium. Significantly higher released activities of 211Pb and 211Bi compared to 223Ra by at least 10 % was observed in each biological medium, except saline, where no significant differences were observed. The in vivo biodistribution studies results in a mice model, show similar pattern, where it was found that even after accumulation of nanoparticles in target tissues, approximately 10 % of 211Pb is continuously released into the blood stream within 24 h, followed by its natural accumulation in kidneys. CONCLUSION This study confirms our assumption that the progeny formed in a chain alpha decay of a certain nuclide, in this case the 223Ra, can be released from its original vector, leave the target tissue, relocate and could be deposited in non-target organs. We did not observe complete progeny wash-out from its original target tissues in our model. This indicates strong dependence of the progeny hot atom fate after its release from the original radiopharmaceutical preparation on multiple factors, like their internalization and retention in cells, cell membranes, extracellular matrices, protein binding, etc. We hypothesize, that also the primary tumour or metastasis size, their metabolic activity may significantly influence progeny fate in vivo, directly impacting the dose delivered to non-target tissues and organs. Therefore a bottom-up approach should be followed and detailed pre-/clinical studies on the release and biodistribution of radioactive progeny originating from the chain alpha emitters should be preferably performed.
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Affiliation(s)
- Michal Sakmár
- Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 11519 Prague 1, Czech Republic
| | - Ján Kozempel
- Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 11519 Prague 1, Czech Republic.
| | - Jan Kučka
- Czech Academy of Sciences, Institute of Macromolecular Chemistry, Heyrovského náměstí 1888-2, 16000 Prague 6, Czech Republic
| | - Tereza Janská
- Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 11519 Prague 1, Czech Republic
| | - Matěj Štíbr
- Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 11519 Prague 1, Czech Republic
| | - Martin Vlk
- Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 11519 Prague 1, Czech Republic
| | - Luděk Šefc
- Charles University in Prague, 1st Faculty of Medicine, Centre of Advanced Preclinical Imaging (CAPI), Salmovská 3, 12000 Prague 2, Czech Republic
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White FD, Thiele NA, Simms ME, Cary SK. Structure and bonding of a radium coordination compound in the solid state. Nat Chem 2024; 16:168-172. [PMID: 37945833 DOI: 10.1038/s41557-023-01366-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 10/11/2023] [Indexed: 11/12/2023]
Abstract
The structure and bonding of radium (Ra) is poorly understood because of challenges arising from its scarcity and radioactivity. Here we report the synthesis of a molecular Ra2+ complex using 226Ra and the organic ligand dibenzo-30-crown-10, and its characterization in the solid state by single-crystal X-ray diffraction. The crystal structure of the Ra2+ complex shows an 11-coordinate arrangement comprising the 10 donor O atoms of dibenzo-30-crown-10 and that of a bound water molecule. Under identical crystallization conditions, barium (Ba2+) yielded a 10-coordinate 'Pac-Man'-shaped structure lacking water. Furthermore, the bond distance between the Ra centre and the O atom of the coordinated water is substantially longer than would be predicted from the ionic radius of Ra2+ and by analogy with Ba2+, supporting greater water lability in Ra2+ complexes than in their Ba2+ counterparts. Barium often serves as a non-radioactive surrogate for radium, but our findings show that Ra2+ chemistry cannot always be predicted using Ba2+.
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Affiliation(s)
- Frankie D White
- Radioisotope Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA.
| | - Nikki A Thiele
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA.
| | - Megan E Simms
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Samantha K Cary
- Radioisotope Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
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Simms ME, Sibley MM, Driscoll DM, Kertesz V, Damron JT, Ivanov AS, White FD, Thiele NA. Reining in Radium for Nuclear Medicine: Extra-Large Chelator Development for an Extra-Large Ion. Inorg Chem 2023; 62:20834-20843. [PMID: 37811965 DOI: 10.1021/acs.inorgchem.3c02985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Targeted α therapy (TAT) of soft-tissue cancers using the α particle-emitting radionuclide 223Ra holds great potential because of its favorable nuclear properties, adequate availability, and established clinical use for treating metastatic prostate cancer of the bone. Despite these advantages, the use of 223Ra has been largely overshadowed by other α emitters due to its challenging chelation chemistry. A key criterion that needs to be met for a radionuclide to be used in TAT is its stable attachment to a targeting vector via a bifunctional chelator. The low charge density of Ra2+ arising from its large ionic radius weakens its electrostatic binding interactions with chelators, leading to insufficient complex stability in vivo. In this study, we synthesized and evaluated macropa-XL as a novel chelator for 223Ra. It bears a large 21-crown-7 macrocyclic core and two picolinate pendent groups, which we hypothesized would effectively saturate the large coordination sphere of the Ra2+ ion. The structural chemistry of macropa-XL was first established with the nonradioactive Ba2+ ion using X-ray diffraction and X-ray absorption spectroscopy, which revealed the formation of an 11-coordinate complex in a rare anti pendent-arm configuration. Subsequently, the stability constant of the [Ra(macropa-XL)] complex was determined via competitive cation exchange with 223Ra and 224Ra radiotracers and compared with that of macropa, the current state-of-the-art chelator for Ra2+. A moderate log KML value of 8.12 was measured for [Ra(macropa-XL)], which is approximately 1.5 log K units lower than the stability constant of [Ra(macropa)]. This relative decrease in Ra2+ complex stability for macropa-XL versus macropa was further probed using density functional theory calculations. Additionally, macropa-XL was radiolabeled with 223Ra, and the kinetic stability of the resulting complex was evaluated in human serum. Although macropa-XL could effectively bind 223Ra under mild conditions, the complex appeared to be unstable to transchelation. Collectively, this study sheds additional light on the chelation chemistry of the exotic Ra2+ ion and contributes to the small, but growing, number of chelator development efforts for 223Ra-based TAT.
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Affiliation(s)
- Megan E Simms
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Megan M Sibley
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Darren M Driscoll
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Vilmos Kertesz
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Joshua T Damron
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Alexander S Ivanov
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Frankie D White
- Radioisotope Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Nikki A Thiele
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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Figueiredo D, Marques IA, Pires AS, Cavaleiro CF, Costa LC, Castela G, Murta JN, Botelho MF, Abrantes AM. Risk of Second Tumors in Retinoblastoma Survivors after Ionizing Radiation: A Review. Cancers (Basel) 2023; 15:5336. [PMID: 38001596 PMCID: PMC10670427 DOI: 10.3390/cancers15225336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/03/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Retinoblastoma (RB) is the most common ocular neoplasm in children, whose development depends on two mutational events that occur in both alleles of the retinoblastoma susceptibility gene (RB1). Regarding the nature of these mutational events, RB can be classified as hereditary if the first event is a germline mutation and the second one is a somatic mutation in retina cells or nonhereditary if both mutational events occur in somatic cells. Although the rate of survival of RB is significantly elevated, the incidence of second malignant neoplasms (SMNs) is a concern, since SMNs are the main cause of death in these patients. Effectively, RB patients present a higher risk of SMN incidence compared to other oncology patients. Furthermore, evidence confirms that hereditary RB survivors are at a higher risk for SMNs than nonhereditary RB survivors. Over the decades, some studies have been performed to better understand this subject, evaluating the risk of the development of SMNs in RB patients. Furthermore, this risk seems to increase with the use of ionizing radiation in some therapeutic approaches commonly used in the treatment of RB. This review aims to clarify the effect of ionizing radiation in RB patients and to understand the association between the risk of SMN incidence in patients that underwent radiation therapy, especially in hereditary RB individuals.
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Affiliation(s)
- Diana Figueiredo
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Oncobiology (CIMAGO), Institute of Biophysics, Faculty of Medicine, 3000-548 Coimbra, Portugal; (D.F.); (I.A.M.); (A.S.P.)
- University of Coimbra, Faculty of Sciences and Technology, 3000-548 Coimbra, Portugal
| | - Inês A. Marques
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Oncobiology (CIMAGO), Institute of Biophysics, Faculty of Medicine, 3000-548 Coimbra, Portugal; (D.F.); (I.A.M.); (A.S.P.)
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal
- University of Coimbra, Faculty of Pharmacy, 3000-548 Coimbra, Portugal
| | - Ana Salomé Pires
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Oncobiology (CIMAGO), Institute of Biophysics, Faculty of Medicine, 3000-548 Coimbra, Portugal; (D.F.); (I.A.M.); (A.S.P.)
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal
- Clinical Academic Centre of Coimbra (CACC), 3000-061 Coimbra, Portugal; (G.C.); (J.N.M.)
| | - Claudia F. Cavaleiro
- Medical Imaging and Radiotherapy Department, Polytechnic Institute of Coimbra, ESTESC-Coimbra Health School, 3045-093 Coimbra, Portugal; (C.F.C.); (L.C.C.)
| | - Luís C. Costa
- Medical Imaging and Radiotherapy Department, Polytechnic Institute of Coimbra, ESTESC-Coimbra Health School, 3045-093 Coimbra, Portugal; (C.F.C.); (L.C.C.)
| | - Guilherme Castela
- Clinical Academic Centre of Coimbra (CACC), 3000-061 Coimbra, Portugal; (G.C.); (J.N.M.)
- Pediatric Oncology Service, Centro Hospitalar Universitário de Coimbra, 3000-602 Coimbra, Portugal
- Department of Ophthalmology, Centro de Responsabilidade Integrado de Oftalmologia, Centro Hospitalar e Universitário de Coimbra, 3000-602 Coimbra, Portugal
- University of Coimbra, Faculty of Medicine, 3000-548 Coimbra, Portugal
| | - Joaquim N. Murta
- Clinical Academic Centre of Coimbra (CACC), 3000-061 Coimbra, Portugal; (G.C.); (J.N.M.)
- Department of Ophthalmology, Centro de Responsabilidade Integrado de Oftalmologia, Centro Hospitalar e Universitário de Coimbra, 3000-602 Coimbra, Portugal
- University of Coimbra, Faculty of Medicine, 3000-548 Coimbra, Portugal
| | - Maria Filomena Botelho
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Oncobiology (CIMAGO), Institute of Biophysics, Faculty of Medicine, 3000-548 Coimbra, Portugal; (D.F.); (I.A.M.); (A.S.P.)
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal
- Clinical Academic Centre of Coimbra (CACC), 3000-061 Coimbra, Portugal; (G.C.); (J.N.M.)
| | - Ana Margarida Abrantes
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) Area of Environment Genetics and Oncobiology (CIMAGO), Institute of Biophysics, Faculty of Medicine, 3000-548 Coimbra, Portugal; (D.F.); (I.A.M.); (A.S.P.)
- University of Coimbra, Center for Innovative Biomedicine and Biotechnology (CIBB), 3000-548 Coimbra, Portugal
- Clinical Academic Centre of Coimbra (CACC), 3000-061 Coimbra, Portugal; (G.C.); (J.N.M.)
- Medical Imaging and Radiotherapy Department, Polytechnic Institute of Coimbra, ESTESC-Coimbra Health School, 3045-093 Coimbra, Portugal; (C.F.C.); (L.C.C.)
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Zamborlin A, Voliani V. Gold nanoparticles as antiangiogenic and antimetastatic agents. Drug Discov Today 2023; 28:103438. [PMID: 36375738 DOI: 10.1016/j.drudis.2022.103438] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/27/2022] [Accepted: 11/08/2022] [Indexed: 11/13/2022]
Abstract
Angiogenesis and metastasis are two interdependent cancer hallmarks, the latter of which is the key cause of treatment failure. Thus, establishing effective antiangiogenesis/antimetastasis agents is the final frontier in cancer research. Gold nanoparticles (GNPs) may provide disruptive advancements in this regard due to their intrinsic physical and physiological features. Here, we comprehensively discuss recent potential therapeutical strategies to treat angiogenesis and metastasis and present a critical review on the state-of-the-art in vitro and in vivo evaluations of the antiangiogenic/antimetastatic activity of GNPs. Finally, we provide perspectives on the contribution of GNPs to the advancement of cancer management.
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Affiliation(s)
- Agata Zamborlin
- Center for Nanotechnology Innovation @NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro, 12 - 56127 Pisa, Italy; NEST-Scuola Normale Superiore, Piazza San Silvestro, 12 - 56127 Pisa, Italy
| | - Valerio Voliani
- Center for Nanotechnology Innovation @NEST, Istituto Italiano di Tecnologia, Piazza San Silvestro, 12 - 56127 Pisa, Italy; Department of Pharmacy, University of Genoa, Viale Cembrano, 4 - 16148 Genoa, Italy.
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8
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Kara A. An optimization study for targeted alpha therapy: Ion behaviours and dose calculations within ICRU-compact bone tissue. Appl Radiat Isot 2022; 191:110552. [DOI: 10.1016/j.apradiso.2022.110552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/27/2022] [Accepted: 11/02/2022] [Indexed: 11/06/2022]
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9
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Kiess AP, Hobbs RF, Bednarz B, Knox SJ, Meredith R, Escorcia FE. ASTRO's Framework for Radiopharmaceutical Therapy Curriculum Development for Trainees. Int J Radiat Oncol Biol Phys 2022; 113:719-726. [PMID: 35367328 DOI: 10.1016/j.ijrobp.2022.03.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 03/08/2022] [Accepted: 03/13/2022] [Indexed: 10/18/2022]
Abstract
In 2017, the American Society for Radiation Oncology (ASTRO) board of directors prioritized radiopharmaceutical therapy (RPT) as a leading area for new therapeutic development, and the ASTRO RPT workgroup was created. Herein, the workgroup has developed a framework for RPT curriculum development upon which education leaders can build to integrate this modality into radiation oncology resident education. Through this effort, the workgroup aims to provide a guide to ensure robust training in an emerging therapeutic area within the context of existing radiation oncology training in radiation biology, medical physics, and clinical radiation oncology. The framework first determines the core RPT knowledge required to select patients, prescribe, safely administer, and manage related adverse events. Then, it defines the most important topics for preparing residents for clinical RPT planning and delivery. This framework is designed as a tool to supplement the current training that exists for radiation oncology residents. The final document was approved by the ASTRO board of directors in the fall of 2021.
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Affiliation(s)
- Ana P Kiess
- Department of Radiation Oncology, Johns Hopkins University, Baltimore, Maryland.
| | - Robert F Hobbs
- Department of Radiation Oncology, Johns Hopkins University, Baltimore, Maryland
| | - Bryan Bednarz
- Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin
| | - Susan J Knox
- Department of Radiation Oncology, Stanford University Medical Center, Stanford, California
| | - Ruby Meredith
- Department of Radiation Oncology, Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama
| | - Freddy E Escorcia
- Molecular Imaging Branch, Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
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10
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An alternative radiochemical separation strategy for isolation of Ac and Ra isotopes from high energy proton irradiated thorium targets for further application in Targeted Alpha Therapy (TAT). Nucl Med Biol 2022; 112-113:35-43. [DOI: 10.1016/j.nucmedbio.2022.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 06/10/2022] [Accepted: 06/14/2022] [Indexed: 11/21/2022]
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11
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Hu A, Wilson JJ. Advancing Chelation Strategies for Large Metal Ions for Nuclear Medicine Applications. Acc Chem Res 2022; 55:904-915. [PMID: 35230803 DOI: 10.1021/acs.accounts.2c00003] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Nuclear medicine leverages radioisotopes of a wide range of elements, a significant portion of which are metals, for the diagnosis and treatment of disease. To optimally use radioisotopes of the metal ions, or radiometals, for these applications, a chelator that efficiently forms thermodynamically and kinetically stable complexes with them is required. The chelator also needs to attach to a biological targeting vector that locates pathological tissues. Numerous chelators suitable for small radiometals have been established to date, but chelators that work well for large radiometals are significantly less common. In this Account, we describe recent progress by us and others in the advancement of ligands for large radiometal chelation with emerging applications in nuclear medicine.First, we discuss and analyze the coordination chemistry of the chelator macropa, a macrocyclic ligand that contains the 18-crown-6 backbone and two picolinate pendent arms, with large metal ions in the context of nuclear medicine. This ligand is known for its unusual reverse size selectivity, the preference for binding large over small metal ions. The radiolabeling properties of macropa with large radiometals 225Ac3+, 132/135La3+, 131Ba2+, 223Ra2+, 213Bi3+, and related in vivo investigations are described. The development of macropa derivatives containing different pendent donors or rigidifying groups in the macrocyclic core is also briefly reviewed.Next, efforts to transform macropa into a radiopharmaceutical agent via covalent conjugation to biological targeting vectors are summarized. In this discussion, two types of bifunctional analogues of macropa reported in the literature, macropa-NCS and mcp-click, are presented. Their implementation in different radiopharmaceutical agents is discussed. Bioconjugates containing macropa attached to small-molecule targeting vectors or macromolecular antibodies are presented. The in vitro and in vivo evaluations of these constructs are also discussed.Lastly, chelators with dual size selectivity are described. This class of ligands exhibits good affinities for both large and small metal ions. This property is valuable for nuclear medicine applications that require the simultaneous chelation of both large and small radiometals with complementary therapeutic and diagnostic properties. Recently, we reported an 18-membered macrocyclic ligand called macrodipa that attains this selectivity pattern. This chelator, its second-generation analogue py-macrodipa, and their applications for chelating the medicinally relevant large 135La3+, 225Ac3+, 213Bi3+, and small 44Sc3+ ions are also presented. Studies with these radiometals show that py-macrodipa can effectively radiolabel and stably retain both large and small radiometals. Overall, this Account makes the case for innovative ligand design approaches for novel emerging radiometal ions with unusual coordination chemistry properties.
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Affiliation(s)
- Aohan Hu
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Justin J. Wilson
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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Abergel R, Aris J, Bolch WE, Dewji SA, Golden A, Hooper DA, Margot D, Menker CG, Paunesku T, Schaue D, Woloschak GE. The enduring legacy of Marie Curie: impacts of radium in 21st century radiological and medical sciences. Int J Radiat Biol 2022; 98:267-275. [PMID: 35030065 PMCID: PMC9723808 DOI: 10.1080/09553002.2022.2027542] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
PURPOSE This review is focused on radium and radionuclides in its decay chain in honor of Marie Curie, who discovered this element. MATERIALS AND METHODS We conglomerated current knowledge regarding radium and its history predating our present understanding of this radionuclide. RESULTS An overview of the properties of radium and its dose assessment is shown followed by discussions about both the negative detrimental and positive therapeutic applications of radium with this history and its evolution reflecting current innovations in medical science. CONCLUSIONS We hope to remind all those who are interested in the progress of science about the vagaries of the process of scientific discovery. In addition, we raise the interesting question of whether Marie Curie's initial success was in part possible due to her tight alignment with her husband Pierre Curie who pushed the work along.
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Affiliation(s)
- Rebecca Abergel
- Nuclear Engineering Department, University of California, Berkeley; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - John Aris
- J. Crayton Pruitt Family Department of Biomedical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, Florida, USA
| | - Wesley E. Bolch
- J. Crayton Pruitt Family Department of Biomedical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, Florida, USA
| | - Shaheen A. Dewji
- Nuclear and Radiological Engineering and Medical Physics Programs, George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Ashley Golden
- Oak Ridge Associated Universities, Oak Ridge, Tennessee, USA
| | - David A. Hooper
- Nuclear Nonproliferation Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA
| | - Dmitri Margot
- Nuclear and Radiological Engineering and Medical Physics Programs, George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Carly G. Menker
- Departments of Radiation Oncology, Radiology, and Cell and Molecular Biology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Tatjana Paunesku
- Departments of Radiation Oncology, Radiology, and Cell and Molecular Biology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Dörthe Schaue
- Department of Radiation Oncology, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California, USA
| | - Gayle E. Woloschak
- Departments of Radiation Oncology, Radiology, and Cell and Molecular Biology, Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA,Corresponding Author:
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Therapy of bone metastases with alpha emitters. Nucl Med Mol Imaging 2022. [DOI: 10.1016/b978-0-12-822960-6.00020-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Kim SI, Szeto AH, Morgan KP, Brower B, Dunn MW, Khandani AH, Godley PA, Rose TL, Basch EM, Milowsky MI, Whang YE, Crona DJ. A real-world evaluation of radium-223 in combination with abiraterone or enzalutamide for the treatment of metastatic castration-resistant prostate cancer. PLoS One 2021; 16:e0253021. [PMID: 34153052 PMCID: PMC8216516 DOI: 10.1371/journal.pone.0253021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/10/2021] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Radium-223, abiraterone, and enzalutamide have each been shown to significantly improve survival as monotherapy in patients with metastatic castration-resistant prostate cancer. However, effects of combination radium-223 plus abiraterone or enzalutamide on survival and safety remain unclear. PATIENTS AND METHODS This single-center retrospective cohort study used electronic health record data of patients with metastatic castration-resistant prostate cancer and bone metastases who were treated with radium-223 between April 1, 2014 and February 19, 2019. Patients who received radium-223 monotherapy were compared to patients who received a combination of radium-223 plus either abiraterone or enzalutamide. The primary endpoint was overall survival. Secondary endpoints included progression-free survival, time to symptomatic skeletal event, symptomatic skeletal event-free survival, and incidence of drug-related adverse events. Time-to-event analyses were estimated by log rank tests using Kaplan-Meier curves. Hazard ratios and 95% confidence intervals were derived from Cox proportional hazards models. Chi-square tests evaluated difference in serious adverse events between the two arms. RESULTS A total of 60 patients met inclusion criteria (n = 41 in the monotherapy arm, n = 19 in the combination arm). Differences in median overall survival were not observed (12.7 vs. 12.8 months; HR 1.15, 95% CI 0.59-2.23; P = 0.68), but median progression-free survival was significantly longer in the combination arm (7.6 vs. 4.9 months; HR 1.94, 95% CI 1.11-3.40; P = 0.02). Significant differences were not observed in time to first SSE (P = 0.97), SSE-free survival (P = 0.16), or in the overall incidence of serious adverse events (P = 0.45). CONCLUSION Combination radium-223 plus abiraterone or enzalutamide did not improve overall survival, but prolonged progression-free survival without increasing the incidence of serious adverse events in metastatic castration-resistant prostate cancer patients with bone metastases. However, these results are limited by small numbers and patient selection inherent in retrospective analysis.
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Affiliation(s)
- Stephanie I. Kim
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Andy H. Szeto
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Katherine P. Morgan
- Division of Practice Advancement and Experiential Education, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina, United States of America
- Department of Pharmacy, UNC Hospitals and Clinics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Blaine Brower
- Division of Oncology, Department of Medicine, UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Mary W. Dunn
- Division of Oncology, Department of Medicine, UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Amir H. Khandani
- Division of Molecular Imaging and Therapeutics, Department of Radiology, UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Paul A. Godley
- Division of Oncology, Department of Medicine, UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Tracy L. Rose
- Division of Oncology, Department of Medicine, UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Ethan M. Basch
- Division of Oncology, Department of Medicine, UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Matthew I. Milowsky
- Division of Oncology, Department of Medicine, UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Young E. Whang
- Division of Oncology, Department of Medicine, UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- * E-mail: (DJC); (YEW)
| | - Daniel J. Crona
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Pharmacy, UNC Hospitals and Clinics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- * E-mail: (DJC); (YEW)
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Eychenne R, Chérel M, Haddad F, Guérard F, Gestin JF. Overview of the Most Promising Radionuclides for Targeted Alpha Therapy: The "Hopeful Eight". Pharmaceutics 2021; 13:pharmaceutics13060906. [PMID: 34207408 PMCID: PMC8234975 DOI: 10.3390/pharmaceutics13060906] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 06/02/2021] [Accepted: 06/08/2021] [Indexed: 12/11/2022] Open
Abstract
Among all existing radionuclides, only a few are of interest for therapeutic applications and more specifically for targeted alpha therapy (TAT). From this selection, actinium-225, astatine-211, bismuth-212, bismuth-213, lead-212, radium-223, terbium-149 and thorium-227 are considered as the most suitable. Despite common general features, they all have their own physical characteristics that make them singular and so promising for TAT. These radionuclides were largely studied over the last two decades, leading to a better knowledge of their production process and chemical behavior, allowing for an increasing number of biological evaluations. The aim of this review is to summarize the main properties of these eight chosen radionuclides. An overview from their availability to the resulting clinical studies, by way of chemical design and preclinical studies is discussed.
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Affiliation(s)
- Romain Eychenne
- Groupement d’Intérêt Public ARRONAX, 1 Rue Aronnax, F-44817 Saint-Herblain, France;
- Université de Nantes, Inserm, CNRS, Centre de Recherche en Cancérologie et Immunologie Nantes—Angers (CRCINA)—UMR 1232, ERL 6001, F-44000 Nantes, France; (M.C.); (F.G.)
- Correspondence: (R.E.); (J.-F.G.)
| | - Michel Chérel
- Université de Nantes, Inserm, CNRS, Centre de Recherche en Cancérologie et Immunologie Nantes—Angers (CRCINA)—UMR 1232, ERL 6001, F-44000 Nantes, France; (M.C.); (F.G.)
| | - Férid Haddad
- Groupement d’Intérêt Public ARRONAX, 1 Rue Aronnax, F-44817 Saint-Herblain, France;
- Laboratoire Subatech, UMR 6457, Université de Nantes, IMT Atlantique, CNRS, Subatech, F-44000 Nantes, France
| | - François Guérard
- Université de Nantes, Inserm, CNRS, Centre de Recherche en Cancérologie et Immunologie Nantes—Angers (CRCINA)—UMR 1232, ERL 6001, F-44000 Nantes, France; (M.C.); (F.G.)
| | - Jean-François Gestin
- Université de Nantes, Inserm, CNRS, Centre de Recherche en Cancérologie et Immunologie Nantes—Angers (CRCINA)—UMR 1232, ERL 6001, F-44000 Nantes, France; (M.C.); (F.G.)
- Correspondence: (R.E.); (J.-F.G.)
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Marques IA, Abrantes AM, Pires AS, Neves AR, Caramelo FJ, Rodrigues T, Matafome P, Tavares-da-Silva E, Gonçalves AC, Pereira CC, Teixeira JP, Seiça R, Costa G, Figueiredo A, Botelho MF. Kinetics of radium-223 and its effects on survival, proliferation and DNA damage in lymph-node and bone metastatic prostate cancer cell lines. Int J Radiat Biol 2021; 97:714-726. [PMID: 33764249 DOI: 10.1080/09553002.2021.1906462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/15/2021] [Accepted: 03/15/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND Metastatic castration-resistant prostate cancer (mCRPC) is associated with a very unfavorable prognosis. At this advanced stage of the disease, there are several therapeutic strategies approved in recent times, being one of them Radium-223 dichloride (Radium-223). However, its mechanisms of action and the process that conducts to cell death are not fully understood. Given this, our main goal is to characterize the radiobiological effects induced by Radium-223 and to evaluate its kinetics on metastatic Prostate Cancer (mPCa) cells. MATERIALS AND METHODS In vitro studies were conducted using two mPCa cell lines, the LNCaP and PC3, the first being derived from lymph node metastasis and the second from bone metastasis. Kinetic studies were conducted to access the capacity of these cell lines to uptake, retain and internalize the Radium-223. For the assessment of radiobiological effects, cells were first exposed to different doses of Radium-223 and the clonogenic assay was done to evaluate cell survival and to determine lethal doses (LD50). Then, the effects were also evaluated in terms of proliferation, oxidative stress, morphological changes and cell damage. RESULTS Radium-223 is uptaken by mPCa cells and reaches the nucleus, where it is retained over time. Irradiation decreases cell survival and proliferation, with LNCaP cells (LD50 = 1.73mGy) being more radiosensitive than PC3 cells (LD50 = 4.20mGy). Irradiated cells showed morphological changes usually associated with apoptosis and a dose-dependent increase in DNA damage. Moreover, activation of cell cycle checkpoints occurs through ATM/CHK2 pathway, which is involved in cell cycle arrest and cell death. CONCLUSIONS The cytotoxic and anti-proliferative effects on both cell lines showed that Radium-223 can decrease the aggressiveness of tumor cells by decreasing the cell survival and proliferation and, also, by increasing the DNA damage. The similar results observed in both cell lines indicated that Radium-223 may have the potential to be used as a therapeutic option also for mCRPC patients with lymph node metastasis. The activation of DNA Damage Response pathways allows the possibility to understand the importance of these checkpoints as targets for new combined therapies.
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Affiliation(s)
- Inês A Marques
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- University of Coimbra, Faculty of Pharmacy, Coimbra, Portugal
| | - Ana M Abrantes
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
| | - Ana S Pires
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
| | - Ana R Neves
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, Coimbra, Portugal
- Project Development Office, Department of Mathematics and Computer Science, Eindhoven University of Technology (TU/e), Eindhoven, The Netherlands
| | - Francisco J Caramelo
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), Laboratory of Biostatistics and Medical Informatics of Faculty of Medicine, Coimbra, Portugal
| | - Tiago Rodrigues
- Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), Laboratory of Physiology of Faculty of Medicine, Coimbra, Portugal
| | - Paulo Matafome
- Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), Laboratory of Physiology of Faculty of Medicine, Coimbra, Portugal
| | - Edgar Tavares-da-Silva
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- Centro Hospitalar e Universitário de Coimbra (CHUC), Department of Urology and Renal Transplantation, Coimbra, Portugal
| | - Ana C Gonçalves
- Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), Laboratory of Oncobiology and Hematology and University Clinic of Hematology of Faculty of Medicine, Coimbra, Portugal
| | - Cristiana C Pereira
- National Institute of Health, Environmental Health Department, Porto, Portugal
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
| | - João P Teixeira
- National Institute of Health, Environmental Health Department, Porto, Portugal
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
| | - Raquel Seiça
- Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR), Laboratory of Physiology of Faculty of Medicine, Coimbra, Portugal
| | - Grancinda Costa
- Centro Hospitalar e Universitário de Coimbra (CHUC), Department of Nuclear Medicine, Coimbra, Portugal
| | - Arnaldo Figueiredo
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- Centro Hospitalar e Universitário de Coimbra (CHUC), Department of Urology and Renal Transplantation, Coimbra, Portugal
| | - Maria F Botelho
- University of Coimbra, Coimbra Institute for Clinical and Biomedical Research (iCBR) area of Environment Genetics and Oncobiology (CIMAGO), Biophysics Institute of Faculty of Medicine, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
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Tailoring the Radionuclide Encapsulation and Surface Chemistry of La(223Ra)VO4 Nanoparticles for Targeted Alpha Therapy. JOURNAL OF NANOTHERANOSTICS 2021. [DOI: 10.3390/jnt2010003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The development of targeted alpha therapy (TAT) as a viable cancer treatment requires innovative solutions to challenges associated with radionuclide retention to enhance local tumor cytotoxicity and to minimize off-target effects. Nanoparticles (NPs) with high encapsulation and high retention of radionuclides have shown potential in overcoming these issues. This article shows the influence of pH on the structure of lanthanum vanadate (LaVO4) NPs and its impact on the radiochemical yield of 223Ra and subsequent retention of its decay daughters, 211Pb and 211Bi. An acidic pH (4.9) results in a high fraction of La(223Ra)VO4 NPs with tetragonal structure (44.6–66.1%) and a 223Ra radiochemical yield <40%. Adjusting the pH to 11 yields >80% of La(223Ra)VO4 NPs with monoclinic structure and increases the 223Ra radiochemical yield >85%. The leakage of decay daughters from La(223Ra)VO4 NPs (pH 11) was <5% and <0.5% when exposed to deionized water and phosphate-buffered saline, respectively. Altering the surface chemistry of La(223Ra)VO4 NPs with carboxylate and phosphate compounds resulted in a threefold decrease in hydrodynamic diameter and a 223Ra radiochemical yield between 74.7% and 99.6%. These results show the importance of tailoring the synthesis parameters and surface chemistry of LaVO4 NPs to obtain high encapsulation and retention of radionuclides.
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Abstract
Radiopharmaceutical therapy or targeted radionuclide therapy (TRT) is a well-established class of cancer therapeutics that includes a growing number of FDA-approved drugs and a promising pipeline of experimental therapeutics. Radiobiology is fundamental to a mechanistic understanding of the therapeutic capacity of these agents and their potential toxicities. However, the field of radiobiology has historically focused on external beam radiation. Critical differences exist between TRT and external beam radiotherapy with respect to dosimetry, dose rate, linear energy transfer, duration of treatment delivery, fractionation, range, and target volume. These distinctions simultaneously make it difficult to extrapolate from the radiobiology of external beam radiation to that of TRT and pose considerable challenges for preclinical and clinical studies investigating TRT. Here, we discuss these challenges and explore the current understanding of the radiobiology of radiopharmaceuticals.
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Affiliation(s)
- Zachary S Morris
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Andrew Z Wang
- Department of Radiation Oncology, University of North Carolina, Chapel Hill, NC
| | - Susan J Knox
- Department of Radiation Oncology, Stanford University, Palo Alto, CA.
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Bauer D, Stipurin S, Köckerling M, Mamat C. Formation of calix[4]arenes with acyloxycarboxylate functions. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Reissig F, Zarschler K, Hübner R, Pietzsch H, Kopka K, Mamat C. Sub-10 nm Radiolabeled Barium Sulfate Nanoparticles as Carriers for Theranostic Applications and Targeted Alpha Therapy. ChemistryOpen 2020; 9:797-805. [PMID: 32775141 PMCID: PMC7397357 DOI: 10.1002/open.202000126] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 05/08/2020] [Indexed: 11/13/2022] Open
Abstract
The treatment of cancer patients with α-particle-emitting therapeutics continues to gain in importance and relevance. The range of radiopharmaceutically relevant α-emitters is limited to a few radionuclides, as stable chelators or carrier systems for safe transport of the radioactive cargo are often lacking. Encapsulation of α-emitters into solid inorganic systems can help to diversify the portfolio of candidate radionuclides, provided, that these nanomaterials effectively retain both the parent and the recoil daughters. We therefore focus on designing stable and defined nanocarrier-based systems for various clinically relevant radionuclides, including the promising α-emitting radionuclide 224Ra. Hence, sub-10 nm barium sulfate nanocontainers were prepared and different radiometals like 89Zr, 111In, 131Ba, 177Lu or 224Ra were incorporated. Our system shows stabilities of >90 % regarding the radiometal release from the BaSO4 matrix. Furthermore, we confirm the presence of surface-exposed amine functionalities as well as the formation of a biomolecular corona.
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Affiliation(s)
- Falco Reissig
- Institute of Radiopharmaceutical Cancer Research Helmholtz-ZentrumDresden-RossendorfBautzner Landstraße 40001328DresdenGermany
- Faculty of Chemistry and Food ChemistryTechnische Universität Dresden01062DresdenGermany
| | - Kristof Zarschler
- Institute of Radiopharmaceutical Cancer Research Helmholtz-ZentrumDresden-RossendorfBautzner Landstraße 40001328DresdenGermany
| | - René Hübner
- Institute of Ion Beam Physics and Materials ResearchHelmholtz-ZentrumDresden-RossendorfBautzner Landstraße 40001328DresdenGermany
| | - Hans‐Jürgen Pietzsch
- Institute of Radiopharmaceutical Cancer Research Helmholtz-ZentrumDresden-RossendorfBautzner Landstraße 40001328DresdenGermany
| | - Klaus Kopka
- Institute of Radiopharmaceutical Cancer Research Helmholtz-ZentrumDresden-RossendorfBautzner Landstraße 40001328DresdenGermany
- Faculty of Chemistry and Food ChemistryTechnische Universität Dresden01062DresdenGermany
| | - Constantin Mamat
- Institute of Radiopharmaceutical Cancer Research Helmholtz-ZentrumDresden-RossendorfBautzner Landstraße 40001328DresdenGermany
- Faculty of Chemistry and Food ChemistryTechnische Universität Dresden01062DresdenGermany
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Alpha Radiation as a Way to Target Heterochromatic and Gamma Radiation-Exposed Breast Cancer Cells. Cells 2020; 9:cells9051165. [PMID: 32397212 PMCID: PMC7291130 DOI: 10.3390/cells9051165] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/19/2020] [Accepted: 05/06/2020] [Indexed: 12/21/2022] Open
Abstract
Compact chromatin is linked to a poor tumour prognosis and resistance to radiotherapy from photons. We investigated DNA damage induction and repair in the context of chromatin structure for densely ionising alpha radiation as well as its therapeutic potential. Chromatin opening by histone deacetylase inhibitor trichostatin A (TSA) pretreatment reduced clonogenic survival and increased γH2AX foci in MDA-MB-231 cells, indicative of increased damage induction by free radicals using gamma radiation. In contrast, TSA pretreatment tended to improve survival after alpha radiation while γH2AX foci were similar or lower; therefore, an increased DNA repair is suggested due to increased access of repair proteins. MDA-MB-231 cells exposed to fractionated gamma radiation (2 Gy × 6) expressed high levels of stem cell markers, elevated heterochromatin H3K9me3 marker, and a trend towards reduced clonogenic survival in response to alpha radiation. There was a higher level of H3K9me3 at baseline, and the ratio of DNA damage induced by alpha vs. gamma radiation was higher in the aggressive MDA-MB-231 cells compared to hormone receptor-positive MCF7 cells. We demonstrate that heterochromatin structure and stemness properties are induced by fractionated radiation exposure. Gamma radiation-exposed cells may be targeted using alpha radiation, and we provide a mechanistic basis for the involvement of chromatin in these effects.
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22
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Frantellizzi V, Cosma L, Brunotti G, Pani A, Spanu A, Nuvoli S, De Cristofaro F, Civitelli L, De Vincentis G. Targeted Alpha Therapy with Thorium-227. Cancer Biother Radiopharm 2020; 35:437-445. [PMID: 31967907 DOI: 10.1089/cbr.2019.3105] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Targeted alpha therapy (TAT) can deliver high localized burden of radiation selectively to cancer cells as well as the tumor microenvironment, while minimizing toxicity to normal surrounding cell. Radium-223 (223Ra), the first-in-class α-emitter approved for bone metastatic castration-resistant prostate cancer has shown the ability to prolong patient survival. Targeted Thorium-227 (227Th) conjugates represent a new class of therapeutic radiopharmaceuticals for TAT. They are comprised of the α-emitter 227Th complexed to a chelator conjugated to a tumor-targeting monoclonal antibody. In this review, the authors will focus out interest on this therapeutic agent. In recent studies 227Th-labeled radioimmunoconjugates showed a relevant stability both in serum and vivo conditions with a significant antigen-dependent inhibition of cell growth. Unlike 223Ra, the parent radionuclide 227Th can form highly stable chelator complexes and is therefore amenable to targeted radioimmunotherapy. The authors discuss the future potential role of 227Th TAT in the treatment of several solid as well as hematologic malignancies.
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Affiliation(s)
- Viviana Frantellizzi
- Department of Molecular Medicine and Oncology and Anatomical Pathology, Sapienza University of Rome, Rome, Italy
| | - Laura Cosma
- Department of Radiological Sciences, Oncology and Anatomical Pathology, Sapienza University of Rome, Rome, Italy
| | - Gabriele Brunotti
- Department of Radiological Sciences, Oncology and Anatomical Pathology, Sapienza University of Rome, Rome, Italy
| | - Arianna Pani
- Department of Oncology and Hemato-oncology, University of Milan "Statale," Milan, Italy
| | - Angela Spanu
- Unit of Nuclear Medicine, Department of Medicine, Surgical and Experimental Science, University of Sassari, Sassari, Italy
| | - Susanna Nuvoli
- Unit of Nuclear Medicine, Department of Medicine, Surgical and Experimental Science, University of Sassari, Sassari, Italy
| | - Flaminia De Cristofaro
- Department of Radiological Sciences, Oncology and Anatomical Pathology, Sapienza University of Rome, Rome, Italy
| | - Liana Civitelli
- Department of Radiological Sciences, Oncology and Anatomical Pathology, Sapienza University of Rome, Rome, Italy
| | - Giuseppe De Vincentis
- Department of Radiological Sciences, Oncology and Anatomical Pathology, Sapienza University of Rome, Rome, Italy
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23
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Brito AF, Abrantes AM, Teixo R, Pires AS, Ribeiro AC, Ferreira RF, Mascarenhas A, Puga T, Laranjo M, Caramelo F, Boin I, Jefferson DM, Gonçalves C, Martins R, Tavares I, Ribeiro IP, Sarmento-Ribeiro AB, Carreira IM, Souza D, Tralhão JG, Botelho MF. Iodine‑131 metabolic radiotherapy leads to cell death and genomic alterations through NIS overexpression on cholangiocarcinoma. Int J Oncol 2020; 56:709-727. [PMID: 31922240 PMCID: PMC7010220 DOI: 10.3892/ijo.2020.4957] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 09/24/2019] [Indexed: 12/30/2022] Open
Abstract
Cholangiocarcinoma (CC) is an aggressive liver tumor with limited therapeutic options. Natrium-iodide symporter (NIS) mediates the uptake of iodine by the thyroid, representing a key component in metabolic radiotherapy using iodine-131 (131I) for the treatment of thyroid cancer. NIS expression is increased in CC, providing the opportunity for a novel therapeutic approach for this type of tumor. Thus, in this study, we aimed to evaluate therapeutic efficacy of 131I in two human CC cell lines. Uptake experiments analyzed the 131I uptake profiles of the tumor cell lines under study. The cells were irradiated with various doses of 131I to evaluate and characterize the effects of metabolic radiotherapy. NIS protein expression was assessed by immunofluorescence methods. Cell survival was evaluated by clonogenic assay and flow cytometry was used to assess cell viability, and the type of death and alterations in the cell cycle. The genomic and epigenetic characterization of both CC cells was performed before and after irradiation. NIS gene expression was evaluated in the CC cells by RT-qPCR. The results revealed that CC cells had a higher expression of NIS. 131I induced a decrease in cell survival in a dose-dependent manner. With the increasing irradiation dose, a decrease in cell viability was observed, with a consequent increase in cell death by initial apoptosis. Karyotype and array comparative genomic hybridization (aCGH) analyses revealed that both CC cell lines were near-triploid with several numerical and structural chromosomal rearrangements. NIS gene expression was increased in the TFK-1 and HuCCT1 cells in a time-dependent manner. On the whole, the findings of this study demonstrate that the presence of NIS in cholangiocarcinoma cell lines is crucial for the decreased cell viability and survival observed following the exposure of cholangiocarcinoma cells to 131I.
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Affiliation(s)
- Ana Filipa Brito
- Biophysics Institute, CNC.IBILI, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Ana Margarida Abrantes
- Biophysics Institute, CNC.IBILI, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Ricardo Teixo
- Biophysics Institute, CNC.IBILI, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Ana Salomé Pires
- Biophysics Institute, CNC.IBILI, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Ana Cláudia Ribeiro
- Biophysics Institute, CNC.IBILI, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | | | - Alexandra Mascarenhas
- Cytogenetics and Genomics Laboratory, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Tiago Puga
- Biophysics Institute, CNC.IBILI, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Mafalda Laranjo
- Biophysics Institute, CNC.IBILI, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Francisco Caramelo
- Biophysics Institute, CNC.IBILI, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Ilka Boin
- Department of Surgery, Faculty of Medical Sciences of University of Campinas (FCM/UNICAMP), Campinas, SP 13083‑887, Brazil
| | - Douglas M Jefferson
- Tufts University School of Medicine, Department of Integrative Physiology and Pathobiology, Medford, MA 02155, USA
| | - Cristina Gonçalves
- Institute for Clinical and Biomedical Research Area of Environment Genetics and Oncobiology, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Ricardo Martins
- Faculty of Medicine of University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Inês Tavares
- Cytogenetics and Genomics Laboratory, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Ilda Patrícia Ribeiro
- Institute for Clinical and Biomedical Research Area of Environment Genetics and Oncobiology, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Ana Bela Sarmento-Ribeiro
- Institute for Clinical and Biomedical Research Area of Environment Genetics and Oncobiology, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Isabel Marques Carreira
- Institute for Clinical and Biomedical Research Area of Environment Genetics and Oncobiology, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
| | - Doroteia Souza
- Department of Molecular Biology, Faculty of Medicine of São José do Rio Preto (FAMERP), São José do Rio Preto, SP 15090‑000, Brazil
| | | | - Maria Filomena Botelho
- Biophysics Institute, CNC.IBILI, Faculty of Medicine, University of Coimbra, 3000‑354 Coimbra, Portugal
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24
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Cursano MC, Iuliani M, Casadei C, Stellato M, Tonini G, Paganelli G, Santini D, De Giorgi U. Combination radium-223 therapies in patients with bone metastases from castration-resistant prostate cancer: A review. Crit Rev Oncol Hematol 2020; 146:102864. [PMID: 31986318 DOI: 10.1016/j.critrevonc.2020.102864] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 12/27/2019] [Accepted: 01/04/2020] [Indexed: 01/26/2023] Open
Abstract
Chemotherapeutic agents (docetaxel, cabazitaxel), hormonal therapies (abiraterone, enzalutamide) and radium-223 improve survival in patients with bone metastatic castration-resistant prostate cancer (mCRPC). Combinations of radium-223 with these agents or novel drugs have been investigated in order to improve survival and decrease bone-related morbidity. In mCRPC, clinical and preclinical data indicate that radium-223, abiraterone and enzalutamide have a direct effect on prostate cancer cells and bone microenvironment when administered as single agents. Initial results from studies of radium-223 and abiraterone, enzalutamide or docetaxel demonstrated efficacy without any safety concern in pre-treated mCRPC; however, this safety profile changed when radium-based combination therapies were administered in un-pretreated mCRPC. This review underline the biological rationale for combining radium strategies, investigating their effects on bone in terms of control of skeletal-related events and bone disease progression. The aim is to understand the possible reasons why different radium-based combination treatments can led to different clinical outcomes.
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Affiliation(s)
- M C Cursano
- Department of Medical Oncology, Campus Bio-Medico University of Rome, 00128, Rome, Italy.
| | - M Iuliani
- Department of Medical Oncology, Campus Bio-Medico University of Rome, 00128, Rome, Italy
| | - C Casadei
- Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014, Meldola, Italy
| | - M Stellato
- Department of Medical Oncology, Campus Bio-Medico University of Rome, 00128, Rome, Italy
| | - G Tonini
- Department of Medical Oncology, Campus Bio-Medico University of Rome, 00128, Rome, Italy
| | - G Paganelli
- Department of Nuclear Medicine Unit, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014, Meldola, Italy
| | - D Santini
- Department of Medical Oncology, Campus Bio-Medico University of Rome, 00128, Rome, Italy
| | - U De Giorgi
- Department of Medical Oncology, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, 47014, Meldola, Italy
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25
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The Mode-of-Action of Targeted Alpha Therapy Radium-223 as an Enabler for Novel Combinations to Treat Patients with Bone Metastasis. Int J Mol Sci 2019; 20:ijms20163899. [PMID: 31405099 PMCID: PMC6720648 DOI: 10.3390/ijms20163899] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 08/07/2019] [Accepted: 08/09/2019] [Indexed: 12/12/2022] Open
Abstract
Bone metastasis is a common clinical complication in several cancer types, and it causes a severe reduction in quality of life as well as lowering survival time. Bone metastases proceed through a vicious self-reinforcing cycle that can be osteolytic or osteoblastic in nature. The vicious cycle is characterized by cancer cells residing in bone releasing signal molecules that promote the differentiation of osteoclasts and osteoblasts either directly or indirectly. The increased activity of osteoclasts and osteoblasts then increases bone turnover, which releases growth factors that benefit metastatic cancer cells. In order to improve the prognosis of patients with bone metastases this cycle must be broken. Radium-223 dichloride (radium-223), the first targeted alpha therapy (TAT) approved, is an osteomimetic radionuclide that is incorporated into bone metastases where its high-linear energy transfer alpha radiation disrupts both the activity of bone cells and cancer cells. Therefore, radium-223 treatment has been shown preclinically to directly affect cancer cells in both osteolytic breast cancer and osteoblastic prostate cancer bone metastases as well as to inhibit the differentiation of osteoblasts and osteoclasts. Clinical studies have demonstrated an increase in survival in patients with metastatic castration-resistant prostate cancer. Due to the effectiveness and low toxicity of radium-223, several novel combination treatment strategies are currently eliciting considerable research interest.
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