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Fletcher SMP, Chisholm A, Lavelle M, Guthier R, Zhang Y, Power C, Berbeco R, McDannold N. A study combining microbubble-mediated focused ultrasound and radiation therapy in the healthy rat brain and a F98 glioma model. Sci Rep 2024; 14:4831. [PMID: 38413663 PMCID: PMC10899261 DOI: 10.1038/s41598-024-55442-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 02/23/2024] [Indexed: 02/29/2024] Open
Abstract
Focused Ultrasound (FUS) has been shown to sensitize tumors outside the brain to Radiotherapy (RT) through increased ceramide-mediated apoptosis. This study investigated the effects of FUS + RT in healthy rodent brains and F98 gliomas. Tumors, or striata in healthy rats, were targeted with microbubble-mediated, pulsed FUS (220 kHz, 102-444 kPa), followed by RT (4, 8, 15 Gy). FUS + RT (8, 15 Gy) resulted in ablative lesions, not observed with FUS or RT only, in healthy tissue. Lesions were visible using Magnetic Resonance Imaging (MRI) within 72 h and persisted until 21 days post-treatment, indicating potential applications in ablative neurosurgery. In F98 tumors, at 8 and 15 Gy, where RT only had significant effects, FUS + RT offered limited improvements. At 4 Gy, where RT had limited effects compared with untreated controls, FUS + RT reduced tumor volumes observed on MRI by 45-57%. However, survival benefits were minimal (controls: 27 days, RT: 27 days, FUS + RT: 28 days). Histological analyses of tumors 72 h after FUS + RT (4 Gy) showed 93% and 396% increases in apoptosis, and 320% and 336% increases in vessel-associated ceramide, compared to FUS and RT only. Preliminary evidence shows that FUS + RT may improve treatment of glioma, but additional studies are required to optimize effect size.
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Affiliation(s)
- Stecia-Marie P Fletcher
- Department of Radiology, Brigham and Women's Hospital, Boston, MA, USA.
- Department of Radiology, Harvard Medical School, Boston, MA, USA.
| | - Amanda Chisholm
- Department of Radiology, Brigham and Women's Hospital, Boston, MA, USA
| | - Michael Lavelle
- Department of Radiation Oncology, Dana Farber Cancer Institute, Boston, MA, USA
- Department of Radiation Oncology, Brigham and Women's Hospital, Boston, MA, USA
| | - Romy Guthier
- Department of Radiation Oncology, Dana Farber Cancer Institute, Boston, MA, USA
- Department of Radiation Oncology, Brigham and Women's Hospital, Boston, MA, USA
- Department of Radiation Oncology, Harvard Medical School, Boston, MA, USA
| | - Yongzhi Zhang
- Department of Radiology, Brigham and Women's Hospital, Boston, MA, USA
- Department of Radiology, Harvard Medical School, Boston, MA, USA
| | - Chanikarn Power
- Department of Radiology, Brigham and Women's Hospital, Boston, MA, USA
| | - Ross Berbeco
- Department of Radiation Oncology, Dana Farber Cancer Institute, Boston, MA, USA
- Department of Radiation Oncology, Brigham and Women's Hospital, Boston, MA, USA
- Department of Radiation Oncology, Harvard Medical School, Boston, MA, USA
| | - Nathan McDannold
- Department of Radiology, Brigham and Women's Hospital, Boston, MA, USA
- Department of Radiology, Harvard Medical School, Boston, MA, USA
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Runge R, Reissig F, Herzog N, Oehme L, Brogsitter C, Kotzerke J. Combining Cisplatin with Different Radiation Qualities-Interpretation of Cytotoxic Effects In Vitro by Isobolographic Analysis. Pharmaceuticals (Basel) 2023; 16:1720. [PMID: 38139846 PMCID: PMC10746989 DOI: 10.3390/ph16121720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 12/06/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
BACKGROUND The combination of platinum-containing cytostatic drugs with different radiation qualities has been studied for years. Despite their massive side effects, these drugs still belong to the therapeutic portfolio in cancer treatment. To overcome the disadvantages of cisplatin, our study investigated the cytotoxic effects of combining radionuclides with cisplatin. METHODS FaDu cells were treated with cisplatin (concentration ≈ 2 µM) and additionally irradiated after two hours with the alpha-emitter 223Ra, the beta-emitter 188Re as well as external X-rays using dose ranges of 2-6 Gy. Cell survival was followed by colony formation assays and plotted against cisplatin concentration and radiation dose. The results were interpreted by isobolograms. RESULTS Isobolographic analyses revealed a supra-additive cytotoxic effect for the combination of cisplatin and 223Ra. A sub-additive effect was observed for the combination of cisplatin and 188Re, whereas a protective effect was found for the combination with X-rays. CONCLUSIONS The combination of cisplatin and 223Ra may have the potential to create a successfully working therapy scheme for various therapy approaches, whereas the combination with 188Re as well as single-dose X-ray treatment did not lead to a detectable radiosensitizing effect. Thus, the combination with alpha-emitters might be advantageous and, therefore, should be followed in future studies when combined with cytostatic drugs.
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Affiliation(s)
- Roswitha Runge
- Department of Nuclear Medicine, University Hospital Carl Gustav Carus, Technical University Dresden, Fetscherstr. 74, 01307 Dresden, Germany; (N.H.); (C.B.); (J.K.)
| | - Falco Reissig
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstraße 400, 01328 Dresden, Germany;
| | - Nora Herzog
- Department of Nuclear Medicine, University Hospital Carl Gustav Carus, Technical University Dresden, Fetscherstr. 74, 01307 Dresden, Germany; (N.H.); (C.B.); (J.K.)
| | - Liane Oehme
- Department of Nuclear Medicine, University Hospital Carl Gustav Carus, Technical University Dresden, Fetscherstr. 74, 01307 Dresden, Germany; (N.H.); (C.B.); (J.K.)
| | - Claudia Brogsitter
- Department of Nuclear Medicine, University Hospital Carl Gustav Carus, Technical University Dresden, Fetscherstr. 74, 01307 Dresden, Germany; (N.H.); (C.B.); (J.K.)
| | - Joerg Kotzerke
- Department of Nuclear Medicine, University Hospital Carl Gustav Carus, Technical University Dresden, Fetscherstr. 74, 01307 Dresden, Germany; (N.H.); (C.B.); (J.K.)
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Restier-Verlet J, Joubert A, Ferlazzo ML, Granzotto A, Sonzogni L, Al-Choboq J, El Nachef L, Le Reun E, Bourguignon M, Foray N. X-rays-Induced Bystander Effect Consists in the Formation of DNA Breaks in a Calcium-Dependent Manner: Influence of the Experimental Procedure and the Individual Factor. Biomolecules 2023; 13:biom13030542. [PMID: 36979480 PMCID: PMC10046354 DOI: 10.3390/biom13030542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/22/2023] [Accepted: 03/07/2023] [Indexed: 03/19/2023] Open
Abstract
Radiation-induced bystander effects (RIBE) describe the biological events occurring in non-targeted cells in the vicinity of irradiated ones. Various experimental procedures have been used to investigate RIBE. Interestingly, most micro-irradiation experiments have been performed with alpha particles, whereas most medium transfers have been done with X-rays. With their high fluence, synchrotron X-rays represent a real opportunity to study RIBE by applying these two approaches with the same radiation type. The RIBE induced in human fibroblasts by the medium transfer approach resulted in a generation of DNA double-strand breaks (DSB) occurring from 10 min to 4 h post-irradiation. Such RIBE was found to be dependent on dose and on the number of donor cells. The RIBE induced with the micro-irradiation approach produced DSB with the same temporal occurrence. Culture media containing high concentrations of phosphates were found to inhibit RIBE, while media rich in calcium increased it. The contribution of the RIBE to the biological dose was evaluated after synchrotron X-rays, media transfer, micro-irradiation, and 6 MeV photon irradiation mimicking a standard radiotherapy session: the RIBE may represent less than 1%, about 5%, and about 20% of the initial dose, respectively. However, RIBE may result in beneficial or otherwise deleterious effects in surrounding tissues according to their radiosensitivity status and their capacity to release Ca2+ ions in response to radiation.
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Affiliation(s)
- Juliette Restier-Verlet
- INSERM U1296 unit “Radiation: Defense/Health/Environment” Centre Léon-Bérard, 69008 Lyon, France
| | - Aurélie Joubert
- INSERM U1296 unit “Radiation: Defense/Health/Environment” Centre Léon-Bérard, 69008 Lyon, France
| | - Mélanie L. Ferlazzo
- INSERM U1296 unit “Radiation: Defense/Health/Environment” Centre Léon-Bérard, 69008 Lyon, France
| | - Adeline Granzotto
- INSERM U1296 unit “Radiation: Defense/Health/Environment” Centre Léon-Bérard, 69008 Lyon, France
| | - Laurène Sonzogni
- INSERM U1296 unit “Radiation: Defense/Health/Environment” Centre Léon-Bérard, 69008 Lyon, France
| | - Joëlle Al-Choboq
- INSERM U1296 unit “Radiation: Defense/Health/Environment” Centre Léon-Bérard, 69008 Lyon, France
| | - Laura El Nachef
- INSERM U1296 unit “Radiation: Defense/Health/Environment” Centre Léon-Bérard, 69008 Lyon, France
| | - Eymeric Le Reun
- INSERM U1296 unit “Radiation: Defense/Health/Environment” Centre Léon-Bérard, 69008 Lyon, France
| | - Michel Bourguignon
- INSERM U1296 unit “Radiation: Defense/Health/Environment” Centre Léon-Bérard, 69008 Lyon, France
- Department of Biophysics and Nuclear Medicine, Université Paris Saclay Versailles St Quentin en Yvelines, 78035 Versailles, France
| | - Nicolas Foray
- INSERM U1296 unit “Radiation: Defense/Health/Environment” Centre Léon-Bérard, 69008 Lyon, France
- Correspondence: ; Tel.: +33-4-78-78-28-28
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4
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Sarbadhikary P, George BP, Abrahamse H. Potential Application of Photosensitizers With High-Z Elements for Synergic Cancer Therapy. Front Pharmacol 2022; 13:921729. [PMID: 35837287 PMCID: PMC9274123 DOI: 10.3389/fphar.2022.921729] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 05/17/2022] [Indexed: 01/10/2023] Open
Abstract
The presence of heavy elements in photosensitizers (PS) strongly influences their electronic and photophysical properties, and hence, conjugation of PS with a suitable element is regarded as a potential strategy to improve their photodynamic properties. Moreover, PS conjugated to metal ion or metal complex and heavy atoms such as halogen have attracted considerable attention as promising agents for multimodal or synergistic cancer therapy. These tetrapyrrole compounds depending on the type and nature of the inorganic elements have been explored for photodynamic therapy (PDT), chemotherapy, X-ray photon activation therapy (PAT), and radiotherapy. Particularly, the combination of metal-based PS and X-ray irradiation has been investigated as a promising novel approach for treating deep-seated tumors, which in the case of PDT is a major limitation due to low light penetration in tissue. This review will summarize the present status of evidence on the effect of insertion of metal or halogen on the photophysical properties of PS and the effectiveness of various metal and halogenated PS investigated for PDT, chemotherapy, and PAT as mono and/or combination therapy.
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5
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Maksoud S. The DNA Double-Strand Break Repair in Glioma: Molecular Players and Therapeutic Strategies. Mol Neurobiol 2022; 59:5326-5365. [PMID: 35696013 DOI: 10.1007/s12035-022-02915-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 06/05/2022] [Indexed: 12/12/2022]
Abstract
Gliomas are the most frequent type of tumor in the central nervous system, which exhibit properties that make their treatment difficult, such as cellular infiltration, heterogeneity, and the presence of stem-like cells responsible for tumor recurrence. The response of this type of tumor to chemoradiotherapy is poor, possibly due to a higher repair activity of the genetic material, among other causes. The DNA double-strand breaks are an important type of lesion to the genetic material, which have the potential to trigger processes of cell death or cause gene aberrations that could promote tumorigenesis. This review describes how the different cellular elements regulate the formation of DNA double-strand breaks and their repair in gliomas, discussing the therapeutic potential of the induction of this type of lesion and the suppression of its repair as a control mechanism of brain tumorigenesis.
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Affiliation(s)
- Semer Maksoud
- Experimental Therapeutics and Molecular Imaging Unit, Department of Neurology, Neuro-Oncology Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA.
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6
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Ramsey D, Malaca B, Di Piazza A, Formanek M, Franke P, Froula DH, Pardal M, Simpson TT, Vieira J, Weichman K, Palastro JP. Nonlinear Thomson scattering with ponderomotive control. Phys Rev E 2022; 105:065201. [PMID: 35854579 DOI: 10.1103/physreve.105.065201] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 05/02/2022] [Indexed: 06/15/2023]
Abstract
In nonlinear Thomson scattering, a relativistic electron reradiates the photons of a laser pulse, converting optical light to x rays or beyond. While this extreme frequency conversion offers a promising source for probing high-energy-density materials and driving uncharted regimes of nonlinear quantum electrodynamics, conventional nonlinear Thomson scattering has inherent trade-offs in its scaling with laser intensity. Here we discover that the ponderomotive control afforded by spatiotemporal pulse shaping enables regimes of nonlinear Thomson scattering that substantially enhance the scaling of the radiated power, emission angle, and frequency with laser intensity. By appropriately setting the velocity of the intensity peak, a spatiotemporally shaped pulse can increase the power radiated by orders of magnitude. The enhanced scaling with laser intensity allows for operation at significantly lower electron energies or intensities.
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Affiliation(s)
- D Ramsey
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - B Malaca
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon 1049-001, Portugal
| | - A Di Piazza
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - M Formanek
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
| | - P Franke
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - D H Froula
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - M Pardal
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon 1049-001, Portugal
| | - T T Simpson
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J Vieira
- GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Lisbon 1049-001, Portugal
| | - K Weichman
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
| | - J P Palastro
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA
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7
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de Brito RV, Mancini MW, Palumbo MDN, de Moraes LHO, Rodrigues GJ, Cervantes O, Sercarz JA, Paiva MB. The Rationale for "Laser-Induced Thermal Therapy (LITT) and Intratumoral Cisplatin" Approach for Cancer Treatment. Int J Mol Sci 2022; 23:5934. [PMID: 35682611 PMCID: PMC9180481 DOI: 10.3390/ijms23115934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 01/27/2023] Open
Abstract
Cisplatin is one of the most widely used anticancer drugs in the treatment of various types of solid human cancers, as well as germ cell tumors, sarcomas, and lymphomas. Strong evidence from research has demonstrated higher efficacy of a combination of cisplatin and derivatives, together with hyperthermia and light, in overcoming drug resistance and improving tumoricidal efficacy. It is well known that the antioncogenic potential of CDDP is markedly enhanced by hyperthermia compared to drug treatment alone. However, more recently, accelerators of high energy particles, such as synchrotrons, have been used to produce powerful and monochromatizable radiation to induce an Auger electron cascade in cis-platinum molecules. This is the concept that makes photoactivation of cis-platinum theoretically possible. Both heat and light increase cisplatin anticancer activity via multiple mechanisms, generating DNA lesions by interacting with purine bases in DNA followed by activation of several signal transduction pathways which finally lead to apoptosis. For the past twenty-seven years, our group has developed infrared photo-thermal activation of cisplatin for cancer treatment from bench to bedside. The future development of photoactivatable prodrugs of platinum-based agents injected intratumorally will increase selectivity, lower toxicity and increase efficacy of this important class of antitumor drugs, particularly when treating tumors accessible to laser-based fiber-optic devices, as in head and neck cancer. In this article, the mechanistic rationale of combined intratumor injections of cisplatin and laser-induced thermal therapy (CDDP-LITT) and the clinical application of such minimally invasive treatment for cancer are reviewed.
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Affiliation(s)
- Renan Vieira de Brito
- Department of Otolaryngology and Head and Neck Surgery, Federal University of São Paulo (UNIFESP), Sao Paulo 04023-062, SP, Brazil; (R.V.d.B.); (M.d.N.P.); (O.C.)
| | - Marília Wellichan Mancini
- Biophotonics Department, Institute of Research and Education in the Health Area (NUPEN), Sao Carlos 13562-030, SP, Brazil;
| | - Marcel das Neves Palumbo
- Department of Otolaryngology and Head and Neck Surgery, Federal University of São Paulo (UNIFESP), Sao Paulo 04023-062, SP, Brazil; (R.V.d.B.); (M.d.N.P.); (O.C.)
| | - Luis Henrique Oliveira de Moraes
- Department of Physiological Sciences, Federal University of Sao Carlos (UFSCar), Sao Carlos 13565-905, SP, Brazil; (L.H.O.d.M.); (G.J.R.)
| | - Gerson Jhonatan Rodrigues
- Department of Physiological Sciences, Federal University of Sao Carlos (UFSCar), Sao Carlos 13565-905, SP, Brazil; (L.H.O.d.M.); (G.J.R.)
| | - Onivaldo Cervantes
- Department of Otolaryngology and Head and Neck Surgery, Federal University of São Paulo (UNIFESP), Sao Paulo 04023-062, SP, Brazil; (R.V.d.B.); (M.d.N.P.); (O.C.)
| | - Joel Avram Sercarz
- Department of Head and Neck Surgery, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA;
| | - Marcos Bandiera Paiva
- Department of Otolaryngology and Head and Neck Surgery, Federal University of São Paulo (UNIFESP), Sao Paulo 04023-062, SP, Brazil; (R.V.d.B.); (M.d.N.P.); (O.C.)
- Department of Head and Neck Surgery, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA;
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8
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Iodine containing porous organosilica nanoparticles trigger tumor spheroids destruction upon monochromatic X-ray irradiation: DNA breaks and K-edge energy X-ray. Sci Rep 2021; 11:14192. [PMID: 34262055 PMCID: PMC8280225 DOI: 10.1038/s41598-021-93429-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/17/2021] [Indexed: 02/06/2023] Open
Abstract
X-ray irradiation of high Z elements causes photoelectric effects that include the release of Auger electrons that can induce localized DNA breaks. We have previously established a tumor spheroid-based assay that used gadolinium containing mesoporous silica nanoparticles and synchrotron-generated monochromatic X-rays. In this work, we focused on iodine and synthesized iodine-containing porous organosilica (IPO) nanoparticles. IPO were loaded onto tumor spheroids and the spheroids were irradiated with 33.2 keV monochromatic X-ray. After incubation in CO2 incubator, destruction of tumor spheroids was observed which was accompanied by apoptosis induction, as determined by the TUNEL assay. By employing the γH2AX assay, we detected double strand DNA cleavages immediately after the irradiation. These results suggest that IPO first generate double strand DNA breaks upon X-ray irradiation followed by apoptosis induction of cancer cells. Use of three different monochromatic X-rays having energy levels of 33.0, 33.2 and 33.4 keV as well as X-rays with 0.1 keV energy intervals showed that the optimum effect of all three events (spheroid destruction, apoptosis induction and generation of double strand DNA breaks) occurred with a 33.2 keV monochromatic X-ray. These results uncover the preferential effect of K-edge energy X-ray for tumor spheroid destruction mediated by iodine containing nanoparticles.
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9
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Ke CC, Li JJ, Wu HP, Kuo WW, Chen YA, Lu CH, Wang HE, Hsu SM, Hsieh YJ, Liu RS. Enhancement of IUdR Radiosensitization in Cancer Therapy by Low-Energy Transmission X Ray Irradiation. J Med Biol Eng 2021. [DOI: 10.1007/s40846-021-00616-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Helliwell JR. Combining X-rays, neutrons and electrons, and NMR, for precision and accuracy in structure-function studies. Acta Crystallogr A Found Adv 2021; 77:173-185. [PMID: 33944796 PMCID: PMC8127390 DOI: 10.1107/s205327332100317x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 03/25/2021] [Indexed: 02/02/2023] Open
Abstract
The distinctive features of the physics-based probes used in understanding the structure of matter focusing on biological sciences, but not exclusively, are described in the modern context. This is set in a wider scope of holistic biology and the scepticism about `reductionism', what is called the `molecular level', and how to respond constructively. These topics will be set alongside the principles of accuracy and precision, and their boundaries. The combination of probes and their application together is the usual way of realizing accuracy. The distinction between precision and accuracy can be blurred by the predictive force of a precise structure, thereby lending confidence in its potential accuracy. These descriptions will be applied to the comparison of cryo and room-temperature protein crystal structures as well as the solid state of a crystal and the same molecules studied by small-angle X-ray scattering in solution and by electron microscopy on a sample grid. Examples will include: time-resolved X-ray Laue crystallography of an enzyme Michaelis complex formed directly in a crystal equivalent to in vivo; a new iodoplatin for radiation therapy predicted from studies of platin crystal structures; and the field of colouration of carotenoids, as an effective assay of function, i.e. their colouration, when unbound and bound to a protein. The complementarity of probes, as well as their combinatory use, is then at the foundation of real (biologically relevant), probe-artefacts-free, structure-function studies. The foundations of our methodologies are being transformed by colossal improvements in technologies of X-ray and neutron sources and their beamline instruments, as well as improved electron microscopes and NMR spectrometers. The success of protein structure prediction from gene sequence recently reported by CASP14 also opens new doors to change and extend the foundations of the structural sciences.
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Affiliation(s)
- John R. Helliwell
- Department of Chemistry, University of Manchester, Manchester, M13 9PL, United Kingdom
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11
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Bulin A, Broekgaarden M, Chaput F, Baisamy V, Garrevoet J, Busser B, Brueckner D, Youssef A, Ravanat J, Dujardin C, Motto‐Ros V, Lerouge F, Bohic S, Sancey L, Elleaume H. Radiation Dose-Enhancement Is a Potent Radiotherapeutic Effect of Rare-Earth Composite Nanoscintillators in Preclinical Models of Glioblastoma. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001675. [PMID: 33101867 PMCID: PMC7578894 DOI: 10.1002/advs.202001675] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/16/2020] [Indexed: 05/20/2023]
Abstract
To improve the prognosis of glioblastoma, innovative radiotherapy regimens are required to augment the effect of tolerable radiation doses while sparing surrounding tissues. In this context, nanoscintillators are emerging radiotherapeutics that down-convert X-rays into photons with energies ranging from UV to near-infrared. During radiotherapy, these scintillating properties amplify radiation-induced damage by UV-C emission or photodynamic effects. Additionally, nanoscintillators that contain high-Z elements are likely to induce another, currently unexplored effect: radiation dose-enhancement. This phenomenon stems from a higher photoelectric absorption of orthovoltage X-rays by high-Z elements compared to tissues, resulting in increased production of tissue-damaging photo- and Auger electrons. In this study, Geant4 simulations reveal that rare-earth composite LaF3:Ce nanoscintillators effectively generate photo- and Auger-electrons upon orthovoltage X-rays. 3D spatially resolved X-ray fluorescence microtomography shows that LaF3:Ce highly concentrates in microtumors and enhances radiotherapy in an X-ray energy-dependent manner. In an aggressive syngeneic model of orthotopic glioblastoma, intracerebral injection of LaF3:Ce is well tolerated and achieves complete tumor remission in 15% of the subjects receiving monochromatic synchrotron radiotherapy. This study provides unequivocal evidence for radiation dose-enhancement by nanoscintillators, eliciting a prominent radiotherapeutic effect. Altogether, nanoscintillators have invaluable properties for enhancing the focal damage of radiotherapy in glioblastoma and other radioresistant cancers.
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Affiliation(s)
- Anne‐Laure Bulin
- Synchrotron Radiation for Biomedical Research (STROBE)UA7 INSERMUniversité Grenoble AlpesMedical Beamline at the European Synchrotron Radiation Facility71 Avenue des MartyrsGrenoble Cedex 938043France
| | - Mans Broekgaarden
- Synchrotron Radiation for Biomedical Research (STROBE)UA7 INSERMUniversité Grenoble AlpesMedical Beamline at the European Synchrotron Radiation Facility71 Avenue des MartyrsGrenoble Cedex 938043France
| | - Frédéric Chaput
- Université de LyonÉcole Normale Supérieure de LyonCNRS UMR 5182Université Claude Bernard Lyon 1Laboratoire de ChimieLyonF69342France
| | - Victor Baisamy
- Synchrotron Radiation for Biomedical Research (STROBE)UA7 INSERMUniversité Grenoble AlpesMedical Beamline at the European Synchrotron Radiation Facility71 Avenue des MartyrsGrenoble Cedex 938043France
| | - Jan Garrevoet
- Deutsches Elektronen‐Synchrotron DESYNotkestrasse 85HamburgDE‐22607Germany
| | - Benoît Busser
- Cancer Targets and Experimental TherapeuticsInstitute for Advanced BiosciencesUniversité Grenoble AlpesINSERM U1209CNRS UMR5309Allée des AlpesLa Tronche38700France
- Cancer Clinical LaboratoryGrenoble University HospitalGrenoble38700France
| | - Dennis Brueckner
- Deutsches Elektronen‐Synchrotron DESYNotkestrasse 85HamburgDE‐22607Germany
- Department PhysikUniversität HamburgLuruper Chaussee 149Hamburg22761Germany
| | - Antonia Youssef
- Synchrotron Radiation for Biomedical Research (STROBE)UA7 INSERMUniversité Grenoble AlpesMedical Beamline at the European Synchrotron Radiation Facility71 Avenue des MartyrsGrenoble Cedex 938043France
- Université Grenoble AlpesCEACNRSIRIGSyMMES UMR 5819GrenobleF‐38000France
| | - Jean‐Luc Ravanat
- Université Grenoble AlpesCEACNRSIRIGSyMMES UMR 5819GrenobleF‐38000France
| | - Christophe Dujardin
- Institut Lumière MatièreUMR5306Université Claude Bernard Lyon 1CNRSVilleurbanne Cedex69622France
| | - Vincent Motto‐Ros
- Institut Lumière MatièreUMR5306Université Claude Bernard Lyon 1CNRSVilleurbanne Cedex69622France
| | - Frédéric Lerouge
- Université de LyonÉcole Normale Supérieure de LyonCNRS UMR 5182Université Claude Bernard Lyon 1Laboratoire de ChimieLyonF69342France
| | - Sylvain Bohic
- Synchrotron Radiation for Biomedical Research (STROBE)UA7 INSERMUniversité Grenoble AlpesMedical Beamline at the European Synchrotron Radiation Facility71 Avenue des MartyrsGrenoble Cedex 938043France
| | - Lucie Sancey
- Cancer Targets and Experimental TherapeuticsInstitute for Advanced BiosciencesUniversité Grenoble AlpesINSERM U1209CNRS UMR5309Allée des AlpesLa Tronche38700France
| | - Hélène Elleaume
- Synchrotron Radiation for Biomedical Research (STROBE)UA7 INSERMUniversité Grenoble AlpesMedical Beamline at the European Synchrotron Radiation Facility71 Avenue des MartyrsGrenoble Cedex 938043France
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12
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Elleaume H, Barth RF, Rousseau J, Bobyk L, Balosso J, Yang W, Huo T, Nakkula R. Radiation therapy combined with intracerebral convection-enhanced delivery of cisplatin or carboplatin for treatment of the F98 rat glioma. J Neurooncol 2020; 149:193-208. [PMID: 32809095 DOI: 10.1007/s11060-020-03600-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/08/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND The purpose of this review is to summarize our own experimental studies carried out over a 13-year period of time using the F98 rat glioma as model for high grade gliomas. We evaluated a binary chemo-radiotherapeutic modality that combines either cisplatin (CDDP) or carboplatin, administered intracerebrally (i.c.) by means of convection-enhanced delivery (CED) or osmotic pumps, in combination with either synchrotron or conventional X-irradiation. METHODS F98 glioma cells were implanted stereotactically into the brains of syngeneic Fischer rats. Approximately 14 days later, either CDDP or carboplatin was administered i.c. by CED, followed 24 h later by radiotherapy using either a synchrotron or, subsequently, megavoltage linear accelerators (LINAC). RESULTS CDDP was administered at a dose of 3 µg in 5 µL, followed 24 h later with an irradiation dose of 15 Gy or carboplatin at a dose of 20 µg in 10 µL, followed 24 h later with 3 fractions of 8 Gy each, at the source at the European Synchrotron Radiation Facility (ESRF). This resulted in a median survival time (MeST) > 180 days with 33% long term survivors (LTS) for CDDP and a MeST > 60 days with 8 to 22% LTS, for carboplatin. Subsequently it became apparent that comparable survival data could be obtained with megavoltage X-irradiation using a LINAC source. The best survival data were obtained with a dose of 72 µg of carboplatin administered by means of Alzet® osmotic pumps over 7 days. This resulted in a MeST of > 180 days, with 55% LTS. Histopathologic examination of all the brains of the surviving rats revealed no residual tumor cells or evidence of significant radiation related effects. CONCLUSIONS The results obtained using this combination therapy has, to the best of our knowledge, yielded the most promising survival data ever reported using the F98 glioma model.
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Affiliation(s)
- Hélène Elleaume
- INSERM UA07 Team STROBE, ESRF, 71 Avenue des Martyrs, 38000, Grenoble, France.
- European Synchrotron Radiation Facility, ID17 Medical Beamline, 71 Avenue Martyrs, 38000, Grenoble, France.
| | - Rolf F Barth
- Department of Pathology, The Ohio State University, 4132 Graves Hall - 333 W. 10th Avenue, Columbus, OH, 43210, USA.
| | - Julia Rousseau
- INSERM UA07 Team STROBE, ESRF, 71 Avenue des Martyrs, 38000, Grenoble, France
- European Synchrotron Radiation Facility, ID17 Medical Beamline, 71 Avenue Martyrs, 38000, Grenoble, France
| | - Laure Bobyk
- INSERM UA07 Team STROBE, ESRF, 71 Avenue des Martyrs, 38000, Grenoble, France
- European Synchrotron Radiation Facility, ID17 Medical Beamline, 71 Avenue Martyrs, 38000, Grenoble, France
| | - Jacques Balosso
- INSERM UA07 Team STROBE, ESRF, 71 Avenue des Martyrs, 38000, Grenoble, France
- Service de Radiothérapie, Centre Hospitalier Universitaire Grenoble-Alpes, 38700, La Tronche, France
- Centre de lutte contre le Cancer F. Baclesse, 3 avenue du général Harris, 14000, Caen, France
| | - Weilian Yang
- Department of Pathology, The Ohio State University, 4132 Graves Hall - 333 W. 10th Avenue, Columbus, OH, 43210, USA
- Department of Neurosurgery, Suzhou Medical College, Suzhou, China
| | - Tianyao Huo
- Department of Pathology, The Ohio State University, 4132 Graves Hall - 333 W. 10th Avenue, Columbus, OH, 43210, USA
- Department of Health Outcomes and Policy, College of Medicine, University of Florida, Gainesville, FL, 32610, USA
| | - Robin Nakkula
- Department of Pathology, The Ohio State University, 4132 Graves Hall - 333 W. 10th Avenue, Columbus, OH, 43210, USA
- Research Institute, Nationwide Children's Hospital, Columbus, OH, 43205, USA
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13
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Salado-Leza D, Porcel E, Yang X, Štefančíková L, Bolsa-Ferruz M, Savina F, Dragoe D, Guerquin-Kern JL, Wu TD, Hirayama R, Remita H, Lacombe S. Green One-Step Synthesis of Medical Nanoagents for Advanced Radiation Therapy. Nanotechnol Sci Appl 2020; 13:61-76. [PMID: 32848371 PMCID: PMC7426062 DOI: 10.2147/nsa.s257392] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 06/30/2020] [Indexed: 01/02/2023] Open
Abstract
PURPOSE Metal-based nanoparticles (M-NPs) have attracted great attention in nanomedicine due to their capacity to amplify and improve the tumor targeting of medical beams. However, their simple, efficient, high-yield and reproducible production remains a challenge. Currently, M-NPs are mainly synthesized by chemical methods or radiolysis using toxic reactants. The waste of time, loss of material and potential environmental hazards are major limitations. MATERIALS AND METHODS This work proposes a simple, fast and green strategy to synthesize small, non-toxic and stable NPs in water with a 100% production rate. Ionizing radiation is used to simultaneously synthesize and sterilize the containing NPs solutions. The synthesis of platinum nanoparticles (Pt NPs) coated with biocompatible poly(ethylene glycol) ligands (PEG) is presented as proof of concept. The physicochemical properties of NPs were studied by complementary specialized techniques. Their toxicity and radio-enhancing properties were evaluated in a cancerous in vitro model. Using plasmid nanoprobes, we investigated the elementary mechanisms underpinning radio-enhancement. RESULTS AND DISCUSSION Pt NPs showed nearly spherical-like shapes and an average hydrodynamic diameter of 9 nm. NPs are zero-valent platinum successfully coated with PEG. They were found non-toxic and have the singular property of amplifying cell killing induced by γ-rays (14%) and even more, the effects of carbon ions (44%) used in particle therapy. They induce nanosized-molecular damage, which is a major finding to potentially implement this protocol in treatment planning simulations. CONCLUSION This new eco-friendly, fast and simple proposed method opens a new era of engineering water-soluble biocompatible NPs and boosts the development of NP-aided radiation therapies.
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Affiliation(s)
- Daniela Salado-Leza
- Université Paris Saclay, CNRS UMR 8214, Institut des Sciences Moléculaires d’Orsay, 91405 Orsay, France
- Cátedra CONACyT, Faculty of Chemical Sciences, Autonomous University of San Luis Potosí, 78210 San Luis Potosí, Mexico
| | - Erika Porcel
- Université Paris Saclay, CNRS UMR 8214, Institut des Sciences Moléculaires d’Orsay, 91405 Orsay, France
| | - Xiaomin Yang
- Université Paris Saclay, CNRS UMR 8214, Institut des Sciences Moléculaires d’Orsay, 91405 Orsay, France
| | - Lenka Štefančíková
- Université Paris Saclay, CNRS UMR 8214, Institut des Sciences Moléculaires d’Orsay, 91405 Orsay, France
| | - Marta Bolsa-Ferruz
- Université Paris Saclay, CNRS UMR 8214, Institut des Sciences Moléculaires d’Orsay, 91405 Orsay, France
| | - Farah Savina
- Université Paris Saclay, CNRS UMR 8214, Institut des Sciences Moléculaires d’Orsay, 91405 Orsay, France
| | - Diana Dragoe
- Université Paris Saclay, CNRS UMR 8182, Institut de Chimie Moléculaire et des Matériaux d’Orsay, 91405 Orsay, France
| | - Jean-Luc Guerquin-Kern
- Paris-Saclay University, Multimodal Imaging Center (UMS 2016/US 43) CNRS, INSERM, Institut Curie, 91405 Orsay, France
| | - Ting-Di Wu
- Paris-Saclay University, Multimodal Imaging Center (UMS 2016/US 43) CNRS, INSERM, Institut Curie, 91405 Orsay, France
| | - Ryoichi Hirayama
- Department of Charged Particle Therapy Research, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 263-8555 Chiba, Japan
| | - Hynd Remita
- Université Paris Saclay, CNRS UMR 8000, Institut de Chimie Physique, 91405 Orsay, France
| | - Sandrine Lacombe
- Université Paris Saclay, CNRS UMR 8214, Institut des Sciences Moléculaires d’Orsay, 91405 Orsay, France
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Tamanoi F, Matsumoto K, Doan TLH, Shiro A, Saitoh H. Studies on the Exposure of Gadolinium Containing Nanoparticles with Monochromatic X-rays Drive Advances in Radiation Therapy. NANOMATERIALS 2020; 10:nano10071341. [PMID: 32660093 PMCID: PMC7408070 DOI: 10.3390/nano10071341] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/06/2020] [Accepted: 07/07/2020] [Indexed: 02/07/2023]
Abstract
While conventional radiation therapy uses white X-rays that consist of a mixture of X-ray waves with various energy levels, a monochromatic X-ray (monoenergetic X-ray) has a single energy level. Irradiation of high-Z elements such as gold, silver or gadolinium with a synchrotron-generated monochromatic X-rays with the energy at or higher than their K-edge energy causes a photoelectric effect that includes release of the Auger electrons that induce DNA damage—leading to cell killing. Delivery of high-Z elements into cancer cells and tumor mass can be facilitated by the use of nanoparticles. Various types of nanoparticles containing high-Z elements have been developed. A recent addition to this growing list of nanoparticles is mesoporous silica-based nanoparticles (MSNs) containing gadolinium (Gd–MSN). The ability of Gd–MSN to inhibit tumor growth was demonstrated by evaluating effects of irradiating tumor spheroids with a precisely tuned monochromatic X-ray.
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Affiliation(s)
- Fuyuhiko Tamanoi
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University, Kyoto 606-8501, Japan;
- Department of Microbio., Immunol. & Molec. Genet., University of California, Los Angeles, CA 90095, USA
- Correspondence: ; Tel.: +81-75-753-9856
| | - Kotaro Matsumoto
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University, Kyoto 606-8501, Japan;
| | - Tan Le Hoang Doan
- Center for Innovative Materials and Architectures (INOMAR), Vietnam National University-Ho Chi Minh City, Ho Chi Minh City 721337, Vietnam;
| | - Ayumi Shiro
- Kansai Photon Science Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology, Hyogo 679-0198, Japan; (A.S.); (H.S.)
| | - Hiroyuki Saitoh
- Kansai Photon Science Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology, Hyogo 679-0198, Japan; (A.S.); (H.S.)
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15
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Zhao Z, Gao P, Ma L, Chen T. A highly X-ray sensitive iridium prodrug for visualized tumor radiochemotherapy. Chem Sci 2020; 11:3780-3789. [PMID: 34122847 PMCID: PMC8152633 DOI: 10.1039/d0sc00862a] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Concomitant treatment of radiotherapy and chemotherapy is widely used in cancer therapy. The search for highly efficient radiochemotherapy drugs for tumor targeting therapy under image-guiding is of considerable interest. Herein we report an Ir-based prodrug Ir-NB with high sensitization efficiency for in vivo tumor microenvironment responsive cancer-targeted bioimaging radiochemotherapy. To the best of our knowledge, the sensitivity enhancement ratio (SER) of the Ir-NB prodrug is the highest among those reported for radiotherapy metal complex drugs. From detailed action mechanism study, we provide evidence that the prodrug is effectively suppresses the tumor growth through inducing mitochondrial dysfunction, and eventually amplifies the apoptotic signal pathway. This study provides an approach for the development of cancer theranostic agents for tumor radiotherapy. A highly X-ray sensitive molecular prodrug, Ir-NB, was reported for visualized tumor radiochemotherapy. To our knowledge, the sensitivity enhancement ratio of the prodrug is the highest among the reported radiotherapy metal complexes drugs.![]()
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Affiliation(s)
- Zhennan Zhao
- Department of Chemistry, Jinan University Guangzhou 510632 China
| | - Pan Gao
- Department of Chemistry, Jinan University Guangzhou 510632 China
| | - Li Ma
- Department of Chemistry, Jinan University Guangzhou 510632 China
| | - Tianfeng Chen
- Department of Chemistry, Jinan University Guangzhou 510632 China
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16
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Matsumoto K, Saitoh H, Doan TLH, Shiro A, Nakai K, Komatsu A, Tsujimoto M, Yasuda R, Kawachi T, Tajima T, Tamanoi F. Destruction of tumor mass by gadolinium-loaded nanoparticles irradiated with monochromatic X-rays: Implications for the Auger therapy. Sci Rep 2019; 9:13275. [PMID: 31570738 PMCID: PMC6768997 DOI: 10.1038/s41598-019-49978-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 08/19/2019] [Indexed: 01/21/2023] Open
Abstract
Synchrotron generated monochromatic X-rays can be precisely tuned to the K-shell energy of high Z materials resulting in the release of the Auger electrons. In this work, we have employed this mechanism to destruct tumor spheroids. We first loaded gadolinium onto the surface of mesoporous silica nanoparticles (MSNs) producing gadolinium-loaded MSN (Gd-MSN). When Gd-MSN was added to the tumor spheroids, we observed efficient uptake and uniform distribution of Gd-MSN. Gd-MSN also can be taken up into cancer cells and localize to a site just outside of the cell nucleus. Exposure of the Gd-MSN containing tumor spheroids to monochromatic X-ray beams resulted in almost complete destruction. Importantly, this effect was observed at an energy level of 50.25 keV, but not with 50.0 keV. These results suggest that it is possible to use precisely tuned monochromatic X-rays to destruct tumor mass loaded with high Z materials, while sparing other cells. Our experiments point to the importance of nanoparticles to facilitate loading of gadolinium to tumor spheroids and to localize at a site close to the nucleus. Because the nanoparticles can target to tumor, our study opens up the possibility of developing a new type of radiation therapy for cancer.
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Affiliation(s)
- Kotaro Matsumoto
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University, Kyoto, Japan
| | - Hiroyuki Saitoh
- Kansai Photon Science Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology, Hyogo, Japan
| | - Tan Le Hoang Doan
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University, Kyoto, Japan
- Center for Innovative Materials and Architectures, Vietnam National University-Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Ayumi Shiro
- Kansai Photon Science Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology, Hyogo, Japan
| | - Keigo Nakai
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University, Kyoto, Japan
| | - Aoi Komatsu
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University, Kyoto, Japan
| | - Masahiko Tsujimoto
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University, Kyoto, Japan
| | - Ryo Yasuda
- Kansai Photon Science Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology, Hyogo, Japan
| | - Tetsuya Kawachi
- Kansai Photon Science Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology, Hyogo, Japan
| | - Toshiki Tajima
- Department of Physics and Astronomy, University of California, Irvine, CA, USA
| | - Fuyuhiko Tamanoi
- Institute for Integrated Cell-Material Sciences, Institute for Advanced Study, Kyoto University, Kyoto, Japan.
- Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, USA.
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17
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Shi M, Sanche L. Convection-Enhanced Delivery in Malignant Gliomas: A Review of Toxicity and Efficacy. JOURNAL OF ONCOLOGY 2019; 2019:9342796. [PMID: 31428153 PMCID: PMC6679879 DOI: 10.1155/2019/9342796] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 05/06/2019] [Accepted: 06/25/2019] [Indexed: 12/15/2022]
Abstract
Malignant gliomas are undifferentiated or anaplastic gliomas. They remain incurable with a multitude of modalities, including surgery, radiation, chemotherapy, and alternating electric field therapy. Convection-enhanced delivery (CED) is a local treatment that can bypass the blood-brain barrier and increase the tumor uptake of therapeutic agents, while decreasing exposure to healthy tissues. Considering the multiple choices of drugs with different antitumor mechanisms, the supra-additive effect of concomitant radiation and chemotherapy, CED appears as a promising modality for the treatment of brain tumors. In this review, the CED-related toxicities are summarized and classified into immediate, early, and late side effects based on the time of onset, and local and systemic toxicities based on the location of toxicity. The efficacies of CED of various therapeutic agents including targeted antitumor agents, chemotherapeutic agents, radioisotopes, and immunomodulators are covered. The phase III trial PRECISE compares CED of IL13-PE38QQR, an interleukin-13 conjugated to Pseudomonas aeruginosa exotoxin A, to Gliadel® Wafer, a polymer loaded with carmustine. However, in this case, CED had no significant median survival improvement (11.3 months vs. 10 months) in patients with recurrent glioblastomas. In phase II studies, CED of recombinant poliovirus (PVSRIPO) had an overall survival of 21% vs. 14% for the control group at 24 months, and 21% vs. 4% at 36 months. CED of Tf-diphtheria toxin had a response rate of 35% in recurrent malignant gliomas patients. On the other hand, the TGF-β2 inhibitor Trabedersen, HSV-1-tk ganciclovir, and radioisotope 131I-chTNT-1/B mAb had a limited response rate. With this treatment, patients who received CED of the chemotherapeutic agent paclitaxel and immunomodulator, oligodeoxynucleotides containing CpG motifs (CpG-ODN), experienced intolerable toxicity. Toward the end of this article, an ideal CED treatment procedure is proposed and the methods for quality assurance of the CED procedure are discussed.
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Affiliation(s)
- Minghan Shi
- Department of Radiation Oncology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China
| | - Léon Sanche
- Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, Sherbrooke, QC, Canada
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18
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Enríquez Pérez J, Fritzell S, Kopecky J, Visse E, Darabi A, Siesjö P. The effect of locally delivered cisplatin is dependent on an intact immune function in an experimental glioma model. Sci Rep 2019; 9:5632. [PMID: 30948731 PMCID: PMC6449367 DOI: 10.1038/s41598-019-42001-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 03/20/2019] [Indexed: 12/14/2022] Open
Abstract
Several chemotherapeutic drugs are now considered to exert anti-tumour effects, by inducing an immune-promoting inflammatory response. Cisplatin is a potent chemotherapeutic agent used in standard medulloblastoma but not glioblastoma protocols. There is no clear explanation for the differences in clinical efficacy of cisplatin between medulloblastomas and glioblastomas, despite the fact that cisplatin is effective in vitro against the latter. Systemic toxicity is often dose limiting but could tentatively be reduced by intratumoral administration. We found that intratumoral cisplatin can cure GL261 glioma-bearing C57BL/6 mice and this effect was abolished in GL261-bearing NOD-scid IL2rγnull (NSG) mice. Contrary to previous results with intratumoral temozolomide cisplatin had no additive or synergistic effect with whole cell either GL261 wild-type or GM-CSF-transfected GL261 cells whole cell vaccine-based immunotherapy. While whole tumour cell immunizations increased CD8+ T-cells and decreased F4/80+ macrophages intratumorally, cisplatin had no effect on these cell populations. Taken together, our results demonstrate that intratumoral cisplatin treatment was effective with a narrow therapeutic window and may be an efficient approach for glioma or other brain tumour treatment.
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Affiliation(s)
- Julio Enríquez Pérez
- Glioma Immunotherapy Group, Division of Neurosurgery, Department of Clinical Sciences, Lund University, Lund, Sweden.
| | - Sara Fritzell
- Glioma Immunotherapy Group, Division of Neurosurgery, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Jan Kopecky
- Glioma Immunotherapy Group, Division of Neurosurgery, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Edward Visse
- Glioma Immunotherapy Group, Division of Neurosurgery, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Anna Darabi
- Glioma Immunotherapy Group, Division of Neurosurgery, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Peter Siesjö
- Glioma Immunotherapy Group, Division of Neurosurgery, Department of Clinical Sciences, Lund University, Lund, Sweden
- Division of Neurosurgery, Department of Clinical Sciences, Skåne University Hospital, Lund, Sweden
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19
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Cisplatin and beyond: molecular mechanisms of action and drug resistance development in cancer chemotherapy. Radiol Oncol 2019; 53:148-158. [PMID: 30956230 PMCID: PMC6572495 DOI: 10.2478/raon-2019-0018] [Citation(s) in RCA: 271] [Impact Index Per Article: 54.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 09/05/2018] [Indexed: 01/29/2023] Open
Abstract
Background Platinum-based anticancer drugs are widely used in the chemotherapy of human neoplasms. The major obstacle for the clinical use of this class of drugs is the development of resistance and toxicity. It is therefore very important to understand the chemical properties, transport and metabolic pathways and mechanism of actions of these compounds. There is a large body of evidence that therapeutic and toxic effects of platinum drugs on cells are not only a consequence of covalent adducts formation between platinum complexes and DNA but also with RNA and many proteins. These processes determine molecular mechanisms that underlie resistance to platinum drugs as well as their toxicity. Increased expression levels of various transporters and increased repair of platinum-DNA adducts are both considered as the most significant processes in the development of drug resistance. Functional genomics has an increasing role in predicting patients’ responses to platinum drugs. Genetic polymorphisms affecting these processes may play an important role and constitute the basis for individualized approach to cancer therapy. Similar processes may also influence therapeutic potential of nonplatinum metal compounds with anticancer activity. Conclusions Cisplatin is the most frequently used platinum based chemotherapeutic agent that is clinically proven to combat different types of cancers and sarcomas.
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20
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Hainfeld JF, Ridwan SM, Stanishevskiy Y, Panchal R, Slatkin DN, Smilowitz HM. Iodine nanoparticles enhance radiotherapy of intracerebral human glioma in mice and increase efficacy of chemotherapy. Sci Rep 2019; 9:4505. [PMID: 30872755 PMCID: PMC6418169 DOI: 10.1038/s41598-019-41174-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 03/01/2019] [Indexed: 01/04/2023] Open
Abstract
Gliomas and other brain tumors have evaded durable therapies, ultimately causing about 20% of all cancer deaths. Tumors are widespread in the brain at time of diagnosis, limiting surgery and radiotherapy effectiveness. Drugs are also poorly effective. Radiotherapy (RT) is limited by dose to normal tissue. However, high-atomic-number elements absorb X-rays and deposit the absorbed dose locally, even doubling (or more) the local dose. Previously we showed that gold nanoparticles (AuNPs) with RT could eradicate some brain tumors in mice and many other preclinical studies confirmed AuNPs as outstanding radioenhancers. However, impediments to clinical translation of AuNPs have been poor clearance, skin discoloration, and cost. We therefore developed iodine nanoparticles (INPs) that are almost colorless, non-toxic, lower cost, and have reasonable clearance, thus overcoming major drawbacks of AuNPs. Here we report the use of iodine nanoparticle radiotherapy (INRT) in treating advanced human gliomas (U87) grown orthotopically in nude mice resulting in a more than a doubling of median life extension compared to RT alone. Significantly, INRT also enhanced the efficacy of chemotherapy when it was combined with the chemotherapeutic agent Doxil, resulting in some longer-term survivors. While ongoing optimization studies should further improve INRT, clinical translation appears promising.
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Affiliation(s)
- James F Hainfeld
- Nanoprobes, Inc, 95 Horseblock Rd., Unit 1, Yaphank, NY, 11980, USA.
| | - Sharif M Ridwan
- University of Connecticut Health Center, Department of Cell Biology, 263 Farmington Ave., Farmington, CT, USA
| | | | - Rahul Panchal
- University of Connecticut Health Center, Department of Cell Biology, 263 Farmington Ave., Farmington, CT, USA
| | - Daniel N Slatkin
- Nanoprobes, Inc, 95 Horseblock Rd., Unit 1, Yaphank, NY, 11980, USA
| | - Henry M Smilowitz
- University of Connecticut Health Center, Department of Cell Biology, 263 Farmington Ave., Farmington, CT, USA
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21
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Goldberger D, Park C, Evlyukhin E, Cifligu P, Pravica M. Cationic Dependence of X-ray Induced Damage in Strontium and Barium Nitrate. J Phys Chem A 2018; 122:8722-8728. [PMID: 30339392 DOI: 10.1021/acs.jpca.8b08224] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The response of solids to X-ray irradiation is not well understood in part because the interactions between X-rays and molecules in solids depend on the intra- and/or intermolecular electronic properties of the material. Our previous work demonstrated that X-ray induced damage of certain ionic salts depends on the irradiating photon energy, especially when irradiated with photons of energy near the cation's K-edge. To advance understanding of the cationic dependence of X-ray photochemistry, we present studies of X-ray induced damage of barium nitrate and strontium nitrate. Polycrystalline samples of barium and strontium nitrate were irradiated with high flux monochromatic synchrotron X-rays at selected energies near the K-edge of the respective cations. The damage processes were studied with powder X-ray diffraction, and irradiation products, NO2 and O2, were characterized via Raman spectroscopy. Our results demonstrate that irradiating barium and strontium nitrate with photons of energy greater than the K-edge of the cation promotes a higher rate of decomposition compared to that observed when irradiating with photons of energy below the K-edge. Additionally, differences in X-ray induced damage between the two compounds are examined and discussed, and evidence of the diffusion of irradiation products is presented.
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Affiliation(s)
- David Goldberger
- Department of Physics , University of Nevada Las Vegas (UNLV) , Las Vegas , Nevada 89154-4002 , United States
| | - Changyong Park
- High-Pressure Collaborative Access Team (HPCAT), Geophysical Laboratory , Carnegie Institution of Washington , Argonne , Illinois 60439 , United States
| | - Egor Evlyukhin
- Department of Physics , University of Nevada Las Vegas (UNLV) , Las Vegas , Nevada 89154-4002 , United States
| | - Petrika Cifligu
- Department of Physics , University of Nevada Las Vegas (UNLV) , Las Vegas , Nevada 89154-4002 , United States
| | - Michael Pravica
- Department of Physics , University of Nevada Las Vegas (UNLV) , Las Vegas , Nevada 89154-4002 , United States
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Shi M, Anantha M, Wehbe M, Bally MB, Fortin D, Roy LO, Charest G, Richer M, Paquette B, Sanche L. Liposomal formulations of carboplatin injected by convection-enhanced delivery increases the median survival time of F98 glioma bearing rats. J Nanobiotechnology 2018; 16:77. [PMID: 30290821 PMCID: PMC6172733 DOI: 10.1186/s12951-018-0404-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 09/24/2018] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Effectiveness of chemotherapy for treating glioblastoma (GBM) brain tumors is hampered by the blood-brain barrier which limits the entry into the brain of most drugs from the blood. To bypass this barrier, convection-enhanced delivery (CED) was proposed to directly inject drugs in tumor. However, the benefit of CED may be hampered when drugs diffuse outside the tumor to then induce neurotoxicity. Encapsulation of drugs into liposome aims at increasing tumor cells specificity and reduces neurotoxicity. However, the most appropriate liposomal formulation to inject drugs into brain tumor by CED still remains to be determined. In this study, four liposomal carboplatin formulations were prepared and tested in vitro on F98 glioma cells and in Fischer rats carrying F98 tumor implanted in the brain. Impact of pegylation on liposomal surface and relevance of positive or negative charge were assessed. RESULTS The cationic non-pegylated (L1) and pegylated (L2) liposomes greatly improved the toxicity of carboplatin in vitro compared to free carboplatin, whereas only a modest improvement and even a reduction of efficiency were measured with the anionic non-pegylated (L3) and the pegylated (L4) liposomes. Conversely, only the L4 liposome significantly increased the median survival time of Fisher rats implanted with the F98 tumor, compared to free carboplatin. Neurotoxicity assays performed with the empty L4' liposome showed that the lipid components of L4 were not toxic. These results suggest that the positive charge on liposomes L1 and L2, which is known to promote binding to cell membrane, facilitates carboplatin accumulation in cancer cells explaining their higher efficacy in vitro. Conversely, negatively charged and pegylated liposome (L4) seems to diffuse over a larger distance in the tumor, and consequently significantly increased the median survival time of the animals. CONCLUSIONS Selection of the best liposomal formulation based on in vitro studies or animal model can result in contradictory conclusions. The negatively charged and pegylated liposome (L4) which was the less efficient formulation in vitro showed the best therapeutic effect in animal model of GBM. These results support that relevant animal model of GBM must be considered to determine the optimal physicochemical properties of liposomal formulations.
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Affiliation(s)
- Minghan Shi
- Department of Radiation Oncology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China
| | - Malathi Anantha
- Experimental Therapeutics, British Columbia Cancer Agency, Vancouver, BC, Canada.,Centre for Drug Research and Development, Vancouver, BC, Canada
| | - Mohamed Wehbe
- Experimental Therapeutics, British Columbia Cancer Agency, Vancouver, BC, Canada.,Centre for Drug Research and Development, Vancouver, BC, Canada
| | - Marcel B Bally
- Experimental Therapeutics, British Columbia Cancer Agency, Vancouver, BC, Canada.,Centre for Drug Research and Development, Vancouver, BC, Canada
| | - David Fortin
- Department of Surgery, Division of Neurosurgery, Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Laurent-Olivier Roy
- Department of Pharmacology, Universitée de Sherbrooke, Sherbrooke, QC, Canada
| | - Gabriel Charest
- Center for Research in Radiotherapy, Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Maxime Richer
- Department of Pathology, Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Benoit Paquette
- Center for Research in Radiotherapy, Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Léon Sanche
- Center for Research in Radiotherapy, Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, Sherbrooke, QC, Canada
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23
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Sarbadhikary P, Dube A. Enhancement of radiosensitivity of oral carcinoma cells by iodinated chlorin p 6 copper complex in combination with synchrotron X-ray radiation. JOURNAL OF SYNCHROTRON RADIATION 2017; 24:1265-1275. [PMID: 29091070 DOI: 10.1107/s1600577517012711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 09/05/2017] [Indexed: 06/07/2023]
Abstract
The combination of synchrotron X-ray radiation and metal-based radiosensitizer is a novel form of photon activation therapy which offers the advantage of treating malignant tumors with greater efficacy and higher precision than conventional radiation therapy. In this study the anticancer cytotoxic efficacy of a new chlorophyll derivative, iodinated chlorin p6 copper complex (ICp6-Cu), combined with synchrotron X-ray radiation (8-10 keV) in two human oral cancer cell lines is explored. Pre-treatment of cells with 20 µM and 30 µM ICp6-Cu for 3 h was found to enhance the X-ray-induced cytotoxicity with sensitization enhancement ratios of 1.8 and 2.8, respectively. ICp6-Cu localized in cytoplasm, mainly in lysosomes and endoplasmic reticulum, and did not cause any cytotoxicity alone. The radiosensitization effect of ICp6-Cu accompanied a significant increase in the level of reactive oxygen species, damage to lysosomes, inhibition of repair of radiation-induced DNA double-strand breaks, increase in cell death and no significant effect on cell cycle progression. These results demonstrate that ICp6-Cu is a potential agent for synchrotron photon activation therapy of cancer.
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Affiliation(s)
- Paromita Sarbadhikary
- Laser Biomedical Applications Section, Raja Rammana Centre for Advanced Technology, Indore, Madhya Pradesh 452013, India
| | - Alok Dube
- Laser Biomedical Applications Section, Raja Rammana Centre for Advanced Technology, Indore, Madhya Pradesh 452013, India
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24
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Cui L, Her S, Borst GR, Bristow RG, Jaffray DA, Allen C. Radiosensitization by gold nanoparticles: Will they ever make it to the clinic? Radiother Oncol 2017; 124:344-356. [PMID: 28784439 DOI: 10.1016/j.radonc.2017.07.007] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 06/29/2017] [Accepted: 07/05/2017] [Indexed: 12/14/2022]
Abstract
The utilization of gold nanoparticles (AuNPs) as radiosensitizers has shown great promise in pre-clinical research. In the current review, the physical, chemical, and biological pathways via which AuNPs enhance the effects of radiation are presented and discussed. In particular, the impact of AuNPs on the 5 Rs in radiobiology, namely repair, reoxygenation, redistribution, repopulation, and intrinsic radiosensitivity, which determine the extent of radiation enhancement effects are elucidated. Key findings from previous studies are outlined. In addition, crucial parameters including the physicochemical properties of AuNPs, route of administration, dosing schedule of AuNPs and irradiation, as well as type of radiation therapy, are highlighted; the optimal selection and combination of these parameters enable the achievement of a greater therapeutic window for AuNP sensitized radiotherapy. Future directions are put forward as a means to provide guidelines for successful translation of AuNPs to clinical applications as radiosensitizers.
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Affiliation(s)
- Lei Cui
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Canada
| | - Sohyoung Her
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Canada
| | - Gerben R Borst
- Department of Radiation Oncology, The Netherlands Cancer Institute - Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Robert G Bristow
- Departments of Radiation Oncology and Medical Biophysics, University of Toronto, Canada; Ontario Cancer Institute/Princess Margaret Cancer Centre, University Health Network, Toronto, Canada; STTARR Innovation Centre, Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada
| | - David A Jaffray
- Departments of Radiation Oncology and Medical Biophysics, University of Toronto, Canada; STTARR Innovation Centre, Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada; TECHNA Institute and Department of Radiation Physics, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada; Department of Radiation Physics, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada; Techna Institute, University Health Network, Toronto, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Canada
| | - Christine Allen
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Canada; STTARR Innovation Centre, Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Canada.
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25
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Mastorakos P, Zhang C, Song E, Kim YE, Park HW, Berry S, Choi WK, Hanes J, Suk JS. Biodegradable brain-penetrating DNA nanocomplexes and their use to treat malignant brain tumors. J Control Release 2017; 262:37-46. [PMID: 28694032 DOI: 10.1016/j.jconrel.2017.07.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 06/21/2017] [Accepted: 07/07/2017] [Indexed: 11/30/2022]
Abstract
The discovery of powerful genetic targets has spurred clinical development of gene therapy approaches to treat patients with malignant brain tumors. However, lack of success in the clinic has been attributed to the inability of conventional gene vectors to achieve gene transfer throughout highly disseminated primary brain tumors. Here, we demonstrate ex vivo that small nanocomplexes composed of DNA condensed by a blend of biodegradable polymer, poly(β-amino ester) (PBAE), with PBAE conjugated with 5kDa polyethylene glycol (PEG) molecules (PBAE-PEG) rapidly penetrate healthy brain parenchyma and orthotopic brain tumor tissues in rats. Rapid diffusion of these DNA-loaded nanocomplexes observed in fresh tissues ex vivo demonstrated that they avoided adhesive trapping in the brain owing to their dense PEG coating, which was critical to achieving widespread transgene expression throughout orthotopic rat brain tumors in vivo following administration by convection enhanced delivery. Transgene expression with the PBAE/PBAE-PEG blended nanocomplexes (DNA-loaded brain-penetrating nanocomplexes, or DNA-BPN) was uniform throughout the tumor core compared to nanocomplexes composed of DNA with PBAE only (DNA-loaded conventional nanocomplexes, or DNA-CN), and transgene expression reached beyond the tumor edge, where infiltrative cancer cells are found, only for the DNA-BPN formulation. Finally, DNA-BPN loaded with anti-cancer plasmid DNA provided significantly enhanced survival compared to the same plasmid DNA loaded in DNA-CN in two aggressive orthotopic brain tumor models in rats. These findings underscore the importance of achieving widespread delivery of therapeutic nucleic acids within brain tumors and provide a promising new delivery platform for localized gene therapy in the brain.
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Affiliation(s)
- Panagiotis Mastorakos
- Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Clark Zhang
- Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Eric Song
- Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Center for Biotechnology Education, Krieger School of Arts and Sciences, Johns Hopkins University, Baltimore, MD, USA
| | - Young Eun Kim
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Hee Won Park
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Sneha Berry
- Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Center for Biotechnology Education, Krieger School of Arts and Sciences, Johns Hopkins University, Baltimore, MD, USA
| | - Won Kyu Choi
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Justin Hanes
- Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA; Department of Oncology, Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Pharmacology & Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - Jung Soo Suk
- Center for Nanomedicine, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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26
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Koger B, Kirkby C. Optimization of photon beam energies in gold nanoparticle enhanced arc radiation therapy using Monte Carlo methods. Phys Med Biol 2016; 61:8839-8853. [PMID: 27910829 DOI: 10.1088/1361-6560/61/24/8839] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
As a recent area of development in radiation therapy, gold nanoparticle (GNP) enhanced radiation therapy has shown potential to increase tumour dose while maintaining acceptable levels of healthy tissue toxicity. In this study, the effect of varying photon beam energy in GNP enhanced arc radiation therapy (GEART) is quantified through the introduction of a dose scoring metric, and GEART is compared to a conventional radiotherapy treatment. The PENELOPE Monte Carlo code was used to model several simple phantoms consisting of a spherical tumour containing GNPs (concentration: 15 mg Au g-1 tumour, 0.8 mg Au g-1 normal tissue) in a cylinder of tissue. Several monoenergetic photon beams, with energies ranging from 20 keV to 6 MeV, as well as 100, 200, and 300 kVp spectral beams, were used to irradiate the tumour in a 360° arc treatment. A dose metric was then used to compare tumour and tissue doses from GEART treatments to a similar treatment from a 6 MV spectrum. This was also performed on a simulated brain tumour using patient computed tomography data. GEART treatments showed potential over the 6 MV treatment for many of the simulated geometries, delivering up to 88% higher mean dose to the tumour for a constant tissue dose, with the effect greatest near a source energy of 50 keV. This effect is also seen with the inclusion of bone in a brain treatment, with a 14% increase in mean tumour dose over 6 MV, while still maintaining acceptable levels of dose to the bone and brain.
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Affiliation(s)
- B Koger
- Department of Physics and Astronomy, University of Calgary, Calgary, Alberta T2N 1N4, Canada
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27
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Pharmaceuticals for Binary Radiotherapy and Their Use for Treatment of Malignancies (A Review). Pharm Chem J 2016. [DOI: 10.1007/s11094-016-1457-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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28
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Niestroj M, Bewer B, Mousseau DD, Chapman D, Chen J, Hormes J. A monochromatic x-ray irradiation system for
in vitro
studies at synchrotron beamlines. Biomed Phys Eng Express 2016. [DOI: 10.1088/2057-1976/2/5/055001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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29
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Fernandez-Palomo C, Schültke E, Bräuer-Krisch E, Laissue JA, Blattmann H, Seymour C, Mothersill C. Investigation of Abscopal and Bystander Effects in Immunocompromised Mice After Exposure to Pencilbeam and Microbeam Synchrotron Radiation. HEALTH PHYSICS 2016; 111:149-159. [PMID: 27356059 DOI: 10.1097/hp.0000000000000525] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Out-of-field effects are of considerable interest in radiotherapy. The mechanisms are poorly understood but are thought to involve signaling processes, which induce responses in non-targeted cells and tissues. The immune response is thought to play a role. The goal of this research was to study the induction of abscopal effects in the bladders of NU-Foxn1 mice after irradiating their brains using Pencil Beam (PB) or microbeam (MRT) irradiation at the European Synchrotron Radiation Facility (ESRF) in Grenoble, France. Athymic nude mice injected with F98 glioma cells into their right cerebral hemisphere 7 d earlier were treated with either MRT or PB. After recovery times of 2, 12, and 48 h, the urinary bladders were extracted and cultured as tissue explants for 24 h. The growth medium containing the potential signaling factors was harvested, filtered, and transferred to HaCaT reporter cells to assess their clonogenic survival and calcium signaling potential. The results show that in the tumor-free mice, both treatment modalities produce strong bystander/abscopal signals using the clonogenic reporter assay; however, the calcium data do not support a calcium channel mediated mechanism. The presence of a tumor reduces or reverses the effect. PB produced significantly stronger effects in the bladders of tumor-bearing animals. The authors conclude that immunocompromised mice produce signals, which can alter the response of unirradiated reporter cells; however, a novel mechanism appears to be involved.
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Affiliation(s)
- Cristian Fernandez-Palomo
- *Department of Medical Physics and Applied Radiation Sciences, McMaster University, Hamilton, Ontario, L8S 4K1, Canada; †Department of Radiotherapy, Rostock University Medical Center, Südring 75, 18059 Rostock, Germany; ‡European Synchrotron Radiation Facility, BP 220 6, rue Jules Horowitz, 38043 Grenoble, France, §University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland; ** Niederwiesstrasse 13C, Untersiggenthal, Switzerland
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30
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Barth RF, Wu G, Meisen WH, Nakkula RJ, Yang W, Huo T, Kellough DA, Kaumaya P, Turro C, Agius LM, Kaur B. Design, synthesis, and evaluation of cisplatin-containing EGFR targeting bioconjugates as potential therapeutic agents for brain tumors. Onco Targets Ther 2016; 9:2769-81. [PMID: 27274273 PMCID: PMC4869632 DOI: 10.2147/ott.s99242] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The aim of this study was to evaluate four different platinated bioconjugates containing a cisplatin (cis-diamminedichloroplatinum [cis-DDP]) fragment and epidermal growth factor receptor (EGFR)-targeting moieties as potential therapeutic agents for the treatment of brain tumors using a human EGFR-expressing transfectant of the F98 rat glioma (F98EGFR) to assess their efficacy. The first two bioconjugates employed the monoclonal antibody cetuximab (C225 or Erbitux®) as the targeting moiety, and the second two used genetically engineered EGF peptides. C225-G5-Pt was produced by reacting cis-DDP with a fifth-generation polyamidoamine dendrimer (G5) and then linking it to C225 by means of two heterobifunctional reagents. The second bioconjugate (C225-PG-Pt) employed the same methodology except that polyglutamic acid was used as the carrier. The third and fourth bioconjugates used two different EGF peptides, PEP382 and PEP455, with direct coordination to the Pt center of the cis-DDP fragment. In vivo studies with C225-G5-Pt failed to demonstrate therapeutic activity following intracerebral (ic) convection-enhanced delivery (CED) to F98EGFR glioma-bearing rats. The second bioconjugate, C225-PG-Pt, failed to show in vitro cytotoxicity. Furthermore, because of its high molecular weight, we decided that lower molecular weight peptides might provide better targeting and microdistribution within the tumor. Both PEP382-Pt and PEP455-Pt bioconjugates were cytotoxic in vitro and, based on this, a pilot study was initiated using PEP455-Pt. The end point for this study was tumor size at 6 weeks following tumor cell implantation and 4 weeks following ic CED of PEP455-Pt to F98 glioma-bearing rats. Neuropathologic examination revealed that five of seven rats were either tumor-free or only had microscopic tumors at 42 days following tumor implantation compared to a mean survival time of 20.5 and 26.3 days for untreated controls. In conclusion, we have succeeded in reformatting the toxicity profile of cis-DDP and demonstrated the therapeutic efficacy of the PEP455-Pt bioconjugate in F98 glioma-bearing rats.
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Affiliation(s)
- Rolf F Barth
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | - Gong Wu
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | - W Hans Meisen
- Department of Neurological Surgery, The Ohio State University, Columbus, OH, USA
| | - Robin J Nakkula
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | - Weilian Yang
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | - Tianyao Huo
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | - David A Kellough
- Department of Pathology, The Ohio State University, Columbus, OH, USA
| | - Pravin Kaumaya
- Department of Obstetrics and Gynecology, The Ohio State University, Columbus, OH, USA; Department of Molecular and Cellular Biochemistry, The Ohio State University, Columbus, OH, USA; Department of Microbiology, The Ohio State University, Columbus, OH, USA
| | - Claudia Turro
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, USA
| | - Lawrence M Agius
- Department of Pathology, Mater Dei Hospital, University of Malta Medical School, Msida, Malta
| | - Balveen Kaur
- Department of Neurological Surgery, The Ohio State University, Columbus, OH, USA
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31
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Convection-enhancement delivery of liposomal formulation of oxaliplatin shows less toxicity than oxaliplatin yet maintains a similar median survival time in F98 glioma-bearing rat model. Invest New Drugs 2016; 34:269-76. [PMID: 26961906 DOI: 10.1007/s10637-016-0340-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 03/04/2016] [Indexed: 10/22/2022]
Abstract
Results of clinical trials with oxaliplatin in treating glioblastoma are dismal. Previous works showed that intravenous (i.v.) delivery of oxaliplatin did not increase the survival of F98 glioma-bearing Fisher rats. Low accumulation of the drug in tumor cells is presumed to be responsible for the lack of antitumor effect. In the present study, convection-enhanced delivery (CED) was used to directly inject oxaliplatin in brain tumor implanted in rats. Since CED can led to severe toxicity, the liposomal formulation of oxaliplatin (Lipoxal™) was also assessed. The maximum tolerated dose (MTD) of oxaliplatin was 10 μg, while that of Lipoxal™ was increased by 3-times reaching 30 μg. Median survival time (MeST) of F98 glioma-bearing rats injected with 10 μg oxaliplatin by CED was 31 days, 7.5 days longer than untreated control (p = 0.0002); while CED of 30 μg Lipoxal™ reached the same result. Compared to previous study on i.v. delivery of these drugs, their injection by CED significantly increased their tumoral accumulations as well as MeSTs in the F98 glioma bearing rat model. The addition of radiotherapy (15 Gy) to CED of oxaliplatin or Lipoxal™ increased the MeST by 4.0 and 3.0 days, respectively. The timing of radiotherapy (4 h or 24 h after CED) produced similar results. However, the treatment was better tolerated when radiotherapy was performed 24 h after CED. In conclusion, a better tumoral accumulation was achieved when oxaliplatin and Lipoxal™ were injected by CED. The liposomal encapsulation of oxaliplatin reduced its toxic, while maintaining its antitumor potential.
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32
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Martin RF, Feinendegen LE. The quest to exploit the Auger effect in cancer radiotherapy - a reflective review. Int J Radiat Biol 2016; 92:617-632. [PMID: 26926313 DOI: 10.3109/09553002.2015.1136854] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
To identify the emergence of the recognition of the potential of the Auger effect for clinical application, and after tracing the salient milestones towards that goal, to evaluate the status quo and future prospects. It was not until 40 years after the discovery of Auger electrons, that the availability of radioactive DNA precursors enabled the biological power, and the clinical potential, of the Auger effect to be appreciated. Important milestones on the path to clinical translation have been identified and reached, but hurdles remain. Nevertheless the potential is still evident, and there is reasonable optimism that the goal of clinical translation is achievable.
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Affiliation(s)
- Roger F Martin
- a Molecular Radiation Biology Laboratory , Peter MacCallum Cancer Centre.,b The Sir Peter MacCallum Department of Oncology , The University of Melbourne.,c School of Chemistry and Bio-21 Molecular Science and Biotechnology Institute , University of Melbourne , Melbourne , Australia
| | - Ludwig E Feinendegen
- d Heinrich-Heine-University Düsseldorf , Germany.,e Brookhaven National Laboratory , Upton , NY , USA
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33
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Hiramatsu R, Kawabata S, Tanaka H, Sakurai Y, Suzuki M, Ono K, Miyatake SI, Kuroiwa T, Hao E, Vicente MGH. Tetrakis(p-Carboranylthio-Tetrafluorophenyl)Chlorin (TPFC): Application for Photodynamic Therapy and Boron Neutron Capture Therapy. J Pharm Sci 2016; 104:962-970. [PMID: 28756849 DOI: 10.1002/jps.24317] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Revised: 11/24/2014] [Accepted: 12/02/2014] [Indexed: 11/06/2022]
Abstract
Carboranyl-containing chlorins have emerged as promising dual sensitizers for use in both photodynamic therapy (PDT) and boron neutron capture therapy (BNCT), by virtue of their known tumor affinity, low cytotoxicity in dark conditions, and their strong absorptions in the red region of the optical spectrum. Tetrakis(p-carboranylthio-tetrafluorophenyl)chlorin (TPFC) is a new synthetic carboranyl-containing chlorin of high boron content (24% by weight). To evaluate TPFC's applicability as sensitizer for both PDT and BNCT, we performed an in vitro and in vivo study using F98 rat glioma cells and F98 rat glioma-bearing brain tumor models. For the in vivo BNCT study, we used boronophenylalanine (BPA), which is currently used in clinical BNCT studies, via intravenous administration (i.v.) and/or used TPFC via convection-enhanced delivery (CED), a method for local drug infusion directly into the brain. In the in vitro PDT study, the cell surviving fraction following laser irradiation (9J/cm2) was 0.035 whereas in the in vitro BNCT study, the cell surviving fraction following neutron irradiation (thermal neutron=1.73×1012 n/cm2) was 0.04. In the in vivo BNCT study, the median survival time following concomitant administration of BPA (i.v.) and TPFC (CED) was 42days (95% confidence interval; 37-43days). © 2014 Wiley Periodicals, Inc. and the American Pharmacists Association.
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Affiliation(s)
- Ryo Hiramatsu
- Department of Neurosurgery, Osaka Medical College, Osaka, Japan 569-8686
| | - Shinji Kawabata
- Department of Neurosurgery, Osaka Medical College, Osaka, Japan 569-8686.
| | - Hiroki Tanaka
- Kyoto University Research Reactor Institue, Kumatori, Osaka, Japan 590-0494
| | - Yoshinori Sakurai
- Kyoto University Research Reactor Institue, Kumatori, Osaka, Japan 590-0494
| | - Minoru Suzuki
- Kyoto University Research Reactor Institue, Kumatori, Osaka, Japan 590-0494
| | - Koji Ono
- Kyoto University Research Reactor Institue, Kumatori, Osaka, Japan 590-0494
| | - Shin-Ichi Miyatake
- Department of Neurosurgery, Osaka Medical College, Osaka, Japan 569-8686
| | - Toshihiko Kuroiwa
- Department of Neurosurgery, Osaka Medical College, Osaka, Japan 569-8686
| | - Erhong Hao
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803
| | - M Graça H Vicente
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803
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34
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Bräuer-Krisch E, Adam JF, Alagoz E, Bartzsch S, Crosbie J, DeWagter C, Dipuglia A, Donzelli M, Doran S, Fournier P, Kalef-Ezra J, Kock A, Lerch M, McErlean C, Oelfke U, Olko P, Petasecca M, Povoli M, Rosenfeld A, Siegbahn EA, Sporea D, Stugu B. Medical physics aspects of the synchrotron radiation therapies: Microbeam radiation therapy (MRT) and synchrotron stereotactic radiotherapy (SSRT). Phys Med 2015; 31:568-83. [PMID: 26043881 DOI: 10.1016/j.ejmp.2015.04.016] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 04/27/2015] [Accepted: 04/28/2015] [Indexed: 11/19/2022] Open
Abstract
Stereotactic Synchrotron Radiotherapy (SSRT) and Microbeam Radiation Therapy (MRT) are both novel approaches to treat brain tumor and potentially other tumors using synchrotron radiation. Although the techniques differ by their principles, SSRT and MRT share certain common aspects with the possibility of combining their advantages in the future. For MRT, the technique uses highly collimated, quasi-parallel arrays of X-ray microbeams between 50 and 600 keV. Important features of highly brilliant Synchrotron sources are a very small beam divergence and an extremely high dose rate. The minimal beam divergence allows the insertion of so called Multi Slit Collimators (MSC) to produce spatially fractionated beams of typically ∼25-75 micron-wide microplanar beams separated by wider (100-400 microns center-to-center(ctc)) spaces with a very sharp penumbra. Peak entrance doses of several hundreds of Gy are extremely well tolerated by normal tissues and at the same time provide a higher therapeutic index for various tumor models in rodents. The hypothesis of a selective radio-vulnerability of the tumor vasculature versus normal blood vessels by MRT was recently more solidified. SSRT (Synchrotron Stereotactic Radiotherapy) is based on a local drug uptake of high-Z elements in tumors followed by stereotactic irradiation with 80 keV photons to enhance the dose deposition only within the tumor. With SSRT already in its clinical trial stage at the ESRF, most medical physics problems are already solved and the implemented solutions are briefly described, while the medical physics aspects in MRT will be discussed in more detail in this paper.
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Affiliation(s)
- Elke Bräuer-Krisch
- ESRF-The European Synchrotron, 71, Avenue des Martyrs, Grenoble, France.
| | | | - Enver Alagoz
- University of Bergen Department of Physics and Technology, PB 7803 5020, Norway
| | - Stefan Bartzsch
- The Institute of Cancer Research, 15 Cotswold Rd, Sutton SM2 5NG, United Kingdom
| | - Jeff Crosbie
- RMIT University, Melbourne, VIC, 3001, Australia
| | | | - Andrew Dipuglia
- Centre for Medical Radiation Physics, University of Wollongong, Northfields Ave, NSW, Australia
| | - Mattia Donzelli
- ESRF-The European Synchrotron, 71, Avenue des Martyrs, Grenoble, France
| | - Simon Doran
- CRUK Cancer Imaging Centre, Institute of Cancer Research, 15 Cotswold Rd, Sutton Surrey, UK
| | - Pauline Fournier
- ESRF-The European Synchrotron, 71, Avenue des Martyrs, Grenoble, France; Centre for Medical Radiation Physics, University of Wollongong, Northfields Ave, NSW, Australia
| | - John Kalef-Ezra
- Medical Physics Laboratory, University of Ioannina, 451.10, Ioannina, Greece
| | - Angela Kock
- Sintef Minalab, Gaustadalléen 23C, 0373, Oslo, Norway
| | - Michael Lerch
- Centre for Medical Radiation Physics, University of Wollongong, Northfields Ave, NSW, Australia
| | - Ciara McErlean
- CRUK Cancer Imaging Centre, Institute of Cancer Research, 15 Cotswold Rd, Sutton Surrey, UK
| | - Uwe Oelfke
- The Institute of Cancer Research, 15 Cotswold Rd, Sutton SM2 5NG, United Kingdom
| | - Pawel Olko
- Institute of Nuclear Physics PAN, Radzikowskiego 152, 31-342, Krawkow, Poland
| | - Marco Petasecca
- Centre for Medical Radiation Physics, University of Wollongong, Northfields Ave, NSW, Australia
| | - Marco Povoli
- University of Oslo, Department of Physics, 0316, Oslo, Norway
| | - Anatoly Rosenfeld
- Centre for Medical Radiation Physics, University of Wollongong, Northfields Ave, NSW, Australia
| | - Erik A Siegbahn
- Department of Oncolgy-Pathology, Karolinska Institutet, S-177176, Stockholm, Sweden
| | - Dan Sporea
- National Institute for Laser, Plasma and Radiation Physics, Magurele, RO-077125, Romania
| | - Bjarne Stugu
- University of Bergen, Department of Physics and Technology, PB 7803, 5020, Bergen, Norway
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Fernandez-Palomo C, Bräuer-Krisch E, Laissue J, Vukmirovic D, Blattmann H, Seymour C, Schültke E, Mothersill C. Use of synchrotron medical microbeam irradiation to investigate radiation-induced bystander and abscopal effects in vivo. Phys Med 2015; 31:584-95. [PMID: 25817634 DOI: 10.1016/j.ejmp.2015.03.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Revised: 03/06/2015] [Accepted: 03/09/2015] [Indexed: 01/01/2023] Open
Abstract
The question of whether bystander and abscopal effects are the same is unclear. Our experimental system enables us to address this question by allowing irradiated organisms to partner with unexposed individuals. Organs from both animals and appropriate sham and scatter dose controls are tested for expression of several endpoints such as calcium flux, role of 5HT, reporter assay cell death and proteomic profile. The results show that membrane related functions of calcium and 5HT are critical for true bystander effect expression. Our original inter-animal experiments used fish species whole body irradiated with low doses of X-rays, which prevented us from addressing the abscopal effect question. Data which are much more relevant in radiotherapy are now available for rats which received high dose local irradiation to the implanted right brain glioma. The data were generated using quasi-parallel microbeams at the biomedical beamline at the European Synchrotron Radiation Facility in Grenoble France. This means we can directly compare abscopal and "true" bystander effects in a rodent tumour model. Analysis of right brain hemisphere, left brain and urinary bladder in the directly irradiated animals and their unirradiated partners strongly suggests that bystander effects (in partner animals) are not the same as abscopal effects (in the irradiated animal). Furthermore, the presence of a tumour in the right brain alters the magnitude of both abscopal and bystander effects in the tissues from the directly irradiated animal and in the unirradiated partners which did not contain tumours, meaning the type of signal was different.
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Affiliation(s)
- Cristian Fernandez-Palomo
- Department of Medical Physics and Applied Radiation Sciences, McMaster University, Hamilton, Ontario L8S 4K1, Canada.
| | - Elke Bräuer-Krisch
- European Synchrotron Radiation Facility, BP 220 6, rue Jules Horowitz, 38043 Grenoble, France
| | - Jean Laissue
- University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland
| | - Dusan Vukmirovic
- Department of Medical Physics and Applied Radiation Sciences, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | | | - Colin Seymour
- Department of Medical Physics and Applied Radiation Sciences, McMaster University, Hamilton, Ontario L8S 4K1, Canada
| | - Elisabeth Schültke
- Department of Radiotherapy, Rostock University Medical Center, Südring 75, 18059 Rostock, Germany
| | - Carmel Mothersill
- Department of Medical Physics and Applied Radiation Sciences, McMaster University, Hamilton, Ontario L8S 4K1, Canada
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Convection-enhancement delivery of platinum-based drugs and Lipoplatin(TM) to optimize the concomitant effect with radiotherapy in F98 glioma rat model. Invest New Drugs 2015; 33:555-63. [PMID: 25784204 DOI: 10.1007/s10637-015-0228-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 03/04/2015] [Indexed: 10/23/2022]
Abstract
The prognosis for patients with glioblastoma remains poor with current treatments. Although platinum-based drugs are sometimes offered at relapse, their efficacy in this setting is still disputed. In this study, we use convection-enhanced delivery (CED) to deliver the platinum-based drugs (cisplatin, carboplatin, and Lipoplatin(TM) - liposomal formulation of cisplatin) directly into the tumor of F98 glioma-bearing rats that were subsequently treated with γ radiation (15 Gy). CED increased by factors varying between 17 and 111, the concentration of these platinum-based drugs in the brain tumor compared to intra-venous (i.v.) administration, and by 9- to 34-fold, when compared to intra-arterial (i.a.) administration. Furthermore, CED resulted in a better systemic tolerance to platinum drugs compared to their i.a. injection. Among the drugs tested, carboplatin showed the highest maximum tolerated dose (MTD). Treatment with carboplatin resulted in the best median survival time (MeST) (38.5 days), which was further increased by the addition of radiotherapy (54.0 days). Although the DNA-bound platinum adduct were higher at 4 h after CED than 24 h for carboplatin group, combination with radiotherapy led to similar improvement of median survival time. However, less toxicity was observed in animals irradiated 24 h after CED-based chemotherapy. In conclusion, CED increased the accumulation of platinum drugs in tumor, reduced the toxicity, and resulted in a higher median survival time. The best treatment was obtained in animals treated with carboplatin and irradiated 24 h later.
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Lim SN, Pradhan AK, Barth RF, Nahar SN, Nakkula RJ, Yang W, Palmer AM, Turro C, Weldon M, Bell EH, Mo X. Tumoricidal activity of low-energy 160-KV versus 6-MV X-rays against platinum-sensitized F98 glioma cells. JOURNAL OF RADIATION RESEARCH 2015; 56:77-89. [PMID: 25266332 PMCID: PMC4572599 DOI: 10.1093/jrr/rru084] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The purposes of this study were (i) to investigate the differences in effects between 160-kV low-energy and 6-MV high-energy X-rays, both by computational analysis and in vitro studies; (ii) to determine the effects of each on platinum-sensitized F98 rat glioma and murine B16 melanoma cells; and (iii) to describe the in vitro cytotoxicity and in vivo toxicity of a Pt(II) terpyridine platinum (Typ-Pt) complex. Simulations were performed using the Monte Carlo code Geant4 to determine enhancement in absorption of low- versus high-energy X-rays by Pt and to determine dose enhancement factors (DEFs) for a Pt-sensitized tumor phantom. In vitro studies were carried out using Typ-Pt and again with carboplatin due to the unexpected in vivo toxicity of Typ-Pt. Cell survival was determined using clonogenic assays. In agreement with computations and simulations, in vitro data showed up to one log unit reduction in surviving fractions (SFs) of cells treated with 1-4 µg/ml of Typ-Pt and irradiated with 160-kV versus 6-MV X-rays. DEFs showed radiosensitization in the 50-200 keV range, which fell to approximate unity at higher energies, suggesting marginal interactions at MeV energies. Cells sensitized with 1-5 or 7 µg/ml of carboplatin and then irradiated also showed a significant decrease (P < 0.05) in SFs. However, it was unlikely this was due to increased interactions. Theoretical and in vitro studies presented here demonstrated that the tumoricidal activity of low-energy X-rays was greater than that of high-energy X-rays against Pt-sensitized tumor cells. Determining whether radiosensitization is a function of increased interactions will require additional studies.
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Affiliation(s)
- Sara N Lim
- Biophysics Graduate Program, The Ohio State University, 113 Biological Sciences Building, 484 W 12th Avenue, Columbus, OH 43210, USA
| | - Anil K Pradhan
- Biophysics Graduate Program, The Ohio State University, 113 Biological Sciences Building, 484 W 12th Avenue, Columbus, OH 43210, USA Department of Astronomy, The Ohio State University, 4055 McPherson Laboratory, 140 W 18th Avenue, Columbus, OH 43210, USA
| | - Rolf F Barth
- Department of Pathology, The Ohio State University, 4132 Graves Hall, 333 West 10th Avenue, Columbus, OH 43210, USA
| | - Sultana N Nahar
- Department of Astronomy, The Ohio State University, 4055 McPherson Laboratory, 140 W 18th Avenue, Columbus, OH 43210, USA
| | - Robin J Nakkula
- Department of Pathology, The Ohio State University, 4132 Graves Hall, 333 West 10th Avenue, Columbus, OH 43210, USA
| | - Weilian Yang
- Department of Pathology, The Ohio State University, 4132 Graves Hall, 333 West 10th Avenue, Columbus, OH 43210, USA
| | - Alycia M Palmer
- Department of Chemistry and Biochemistry, The Ohio State University, Newman & Wolfrom Laboratory, 100 W 18th Avenue, OH 43210, USA
| | - Claudia Turro
- Department of Chemistry and Biochemistry, The Ohio State University, Newman & Wolfrom Laboratory, 100 W 18th Avenue, OH 43210, USA
| | - Michael Weldon
- Department of Radiation Oncology, The Ohio State University, 300 W 10th Avenue, Columbus, OH 43210, USA
| | - Erica Hlavin Bell
- Department of Radiation Oncology, The Ohio State University, 300 W 10th Avenue, Columbus, OH 43210, USA
| | - Xiaokui Mo
- Center for Biostatistics, The Ohio State University, 2012 Kenny Road, Columbus, OH 43210, USA
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Morrison DE, Aitken JB, de Jonge MD, Issa F, Harris HH, Rendina LM. Synthesis and Biological Evaluation of a Class of Mitochondrially-Targeted Gadolinium(III) Agents. Chemistry 2014; 20:16602-12. [DOI: 10.1002/chem.201404107] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Indexed: 11/10/2022]
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Tanley SWM, Helliwell JR. Chemical conversion of cisplatin and carboplatin with histidine in a model protein crystallized under sodium iodide conditions. ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY COMMUNICATIONS 2014; 70:1127-31. [PMID: 25195879 PMCID: PMC4157406 DOI: 10.1107/s2053230x14013995] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 06/14/2014] [Indexed: 12/04/2022]
Abstract
Crystals of HEWL with cisplatin and HEWL with carboplatin grown in sodium iodide conditions both show a partial chemical transformation of cisplatin or carboplatin to a transiodoplatin (PtI2X2) form. The binding is only at the Nδ atom of His15. A further Pt species (PtI3X) is also seen, in both cases bound in a crevice between symmetry-related protein molecules. Cisplatin and carboplatin are platinum anticancer agents that are used to treat a variety of cancers. Previous X-ray crystallographic studies of carboplatin binding to histidine in hen egg-white lysozyme (HEWL) showed a partial chemical conversion of carboplatin to cisplatin owing to the high sodium chloride concentration used in the crystallization conditions. Also, the co-crystallization of HEWL with carboplatin in sodium bromide conditions resulted in the partial conversion of carboplatin to the transbromoplatin form, with a portion of the cyclobutanedicarboxylate (CBDC) moiety still present. The results of the co-crystallization of HEWL with cisplatin or carboplatin in sodium iodide conditions are now reported in order to determine whether the cisplatin and carboplatin converted to the iodo form, and whether this took place in a similar way to the partial conversion of carboplatin to cisplatin in NaCl conditions or to transbromoplatin in NaBr conditions as seen previously. It is reported here that a partial chemical transformation has taken place to a transplatin form for both ligands. The NaI-grown crystals belonged to the monoclinic space group P21 with two molecules in the asymmetric unit. The chemically transformed cisplatin and carboplatin bind to both His15 residues, i.e. in each asymmetric unit. The binding is only at the Nδ atom of His15. A third platinum species is also seen in both conditions bound in a crevice between symmetry-related molecules. Here, the platinum is bound to three I atoms identified based on their anomalous difference electron densities and their refined occupancies, with the fourth bound atom being a Cl atom (in the cisplatin case) or a portion of the CBDC moiety (in the carboplatin case).
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Affiliation(s)
- Simon W M Tanley
- School of Chemistry, Faculty of Engineering and Physical Sciences, University of Manchester, Brunswick Street, Manchester M13 9PL, England
| | - John R Helliwell
- School of Chemistry, Faculty of Engineering and Physical Sciences, University of Manchester, Brunswick Street, Manchester M13 9PL, England
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Laster BH, Isaacson C, Perets E, Msamra M, Priel E, Kalef-Ezra J, Kost J. Keeping those telomeres short! an innovative intratumoral long-term drug delivery system. J Cancer Res Clin Oncol 2014; 141:23-34. [DOI: 10.1007/s00432-014-1747-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 06/10/2014] [Indexed: 11/24/2022]
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Khoshgard K, Hashemi B, Arbabi A, Rasaee MJ, Soleimani M. Radiosensitization effect of folate-conjugated gold nanoparticles on HeLa cancer cells under orthovoltage superficial radiotherapy techniques. Phys Med Biol 2014; 59:2249-63. [DOI: 10.1088/0031-9155/59/9/2249] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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A Monte Carlo evaluation of dose enhancement by cisplatin and titanocene dichloride chemotherapy drugs in brachytherapy with photon emitting sources. AUSTRALASIAN PHYSICAL & ENGINEERING SCIENCES IN MEDICINE 2014; 37:327-36. [DOI: 10.1007/s13246-014-0266-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Accepted: 03/17/2014] [Indexed: 10/25/2022]
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Obeid L, Deman P, Tessier A, Balosso J, Estève F, Adam JF. Absolute perfusion measurements and associated iodinated contrast agent time course in brain metastasis: a study for contrast-enhanced radiotherapy. J Cereb Blood Flow Metab 2014; 34:638-45. [PMID: 24447951 PMCID: PMC3982083 DOI: 10.1038/jcbfm.2013.239] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 11/11/2013] [Accepted: 12/11/2013] [Indexed: 11/09/2022]
Abstract
Contrast-enhanced radiotherapy is an innovative treatment that combines the selective accumulation of heavy elements in tumors with stereotactic irradiations using medium energy X-rays. The radiation dose enhancement depends on the absolute amount of iodine reached in the tumor and its time course. Quantitative, postinfusion iodine biodistribution and associated brain perfusion parameters were studied in human brain metastasis as key parameters for treatment feasibility and quality. Twelve patients received an intravenous bolus of iodinated contrast agent (CA) (40 mL, 4 mL/s), followed by a steady-state infusion (160 mL, 0.5 mL/s) to ensure stable intratumoral amounts of iodine during the treatment. Absolute iodine concentrations and quantitative perfusion maps were derived from 40 multislice dynamic computed tomography (CT) images of the brain. The postinfusion mean intratumoral iodine concentration (over 30 minutes) reached 1.94 ± 0.12 mg/mL. Reasonable correlations were obtained between these concentrations and the permeability surface area product and the cerebral blood volume. To our knowledge, this is the first quantitative study of CA biodistribution versus time in brain metastasis. The study shows that suitable and stable amounts of iodine can be reached for contrast-enhanced radiotherapy. Moreover, the associated perfusion measurements provide useful information for the patient recruitment and management processes.
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Affiliation(s)
- Layal Obeid
- 1] INSERM, U836, Grenoble-Institut des Neurosciences, Equipe 6, Grenoble Cedex 9, France [2] Université Joseph Fourier, Grenoble Cedex 9, France
| | - Pierre Deman
- 1] INSERM, U836, Grenoble-Institut des Neurosciences, Equipe 6, Grenoble Cedex 9, France [2] Université Joseph Fourier, Grenoble Cedex 9, France
| | - Alexandre Tessier
- Centre Hospitalier Universitaire de Grenoble, Grenoble Cedex, France
| | - Jacques Balosso
- 1] INSERM, U836, Grenoble-Institut des Neurosciences, Equipe 6, Grenoble Cedex 9, France [2] Université Joseph Fourier, Grenoble Cedex 9, France [3] Centre Hospitalier Universitaire de Grenoble, Grenoble Cedex, France
| | - François Estève
- 1] INSERM, U836, Grenoble-Institut des Neurosciences, Equipe 6, Grenoble Cedex 9, France [2] Université Joseph Fourier, Grenoble Cedex 9, France [3] Centre Hospitalier Universitaire de Grenoble, Grenoble Cedex, France
| | - Jean-François Adam
- 1] INSERM, U836, Grenoble-Institut des Neurosciences, Equipe 6, Grenoble Cedex 9, France [2] Université Joseph Fourier, Grenoble Cedex 9, France [3] Centre Hospitalier Universitaire de Grenoble, Grenoble Cedex, France
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Yang W, Barth RF, Huo T, Nakkula RJ, Weldon M, Gupta N, Agius L, Grecula JC. Radiation therapy combined with intracerebral administration of carboplatin for the treatment of brain tumors. Radiat Oncol 2014; 9:25. [PMID: 24422671 PMCID: PMC3898032 DOI: 10.1186/1748-717x-9-25] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 12/31/2013] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND In this study we determined if treatment combining radiation therapy (RT) with intracerebral (i.c.) administration of carboplatin to F98 glioma bearing rats could improve survival over that previously reported by us with a 15 Gy dose (5 Gy × 3) of 6 MV photons. METHODS First, in order to reduce tumor interstitial pressure, a biodistribution study was carried out to determine if pretreatment with dexamethasone alone or in combination with mannitol and furosemide (DMF) would increase carboplatin uptake following convection enhanced delivery (CED). Next, therapy studies were carried out in rats that had received carboplatin either by CED over 30 min (20 μg) or by Alzet pumps over 7 d (84 μg), followed by RT using a LINAC to deliver either 20 Gy (5 Gy × 4) or 15 Gy (7.5 Gy × 2) dose at 6 or 24 hrs after drug administration. Finally, a study was carried out to determine if efficacy could be improved by decreasing the time interval between drug administration and RT. RESULTS Tumor carboplatin values for D and DMF-treated rats were 9.4 ± 4.4 and 12.4 ± 3.2 μg/g, respectively, which were not significantly different (P = 0.14). The best survival data were obtained by combining pump delivery with 5 Gy × 4 of X-irradiation with a mean survival time (MST) of 107.7 d and a 43% cure rate vs. 83.6 d with CED vs. 30-35 d for RT alone and 24.6 d for untreated controls. Treatment-related mortality was observed when RT was initiated 6 h after CED of carboplatin and RT was started 7 d after tumor implantation. Dividing carboplatin into two 10 μg doses and RT into two 7.5 Gy fractions, administered 24 hrs later, yielded survival data (MST 82.1 d with a 25% cure rate) equivalent to that previously reported with 5 Gy × 3 and 20 μg of carboplatin. CONCLUSIONS Although the best survival data were obtained by pump delivery, CED was highly effective in combination with 20 Gy, or as previously reported, 15 Gy, and the latter would be preferable since it would produce less late tissue effects.
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Affiliation(s)
| | - Rolf F Barth
- Department of Pathology, The Ohio State University, Columbus, OH 43210, USA.
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Morrison DE, Aitken JB, de Jonge MD, Ioppolo JA, Harris HH, Rendina LM. High mitochondrial accumulation of new gadolinium(III) agents within tumour cells. Chem Commun (Camb) 2013; 50:2252-4. [PMID: 24352097 DOI: 10.1039/c3cc46903d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first bifunctional Gd(III) complexes covalently bound to arylphosphonium cations and the first tumour-cell selective mitochondrial agents designed for potential application in binary cancer therapies are reported. The highest in vitro cellular uptake for any Gd complex reported to date is described, with levels exceeding 10(10) Gd atoms per tumour cell.
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Affiliation(s)
- Daniel E Morrison
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.
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Ricard C, Fernandez M, Requardt H, Wion D, Vial JC, Segebarth C, van der Sanden B. Synergistic effect of cisplatin and synchrotron irradiation on F98 gliomas growing in nude mice. JOURNAL OF SYNCHROTRON RADIATION 2013; 20:777-84. [PMID: 23955042 PMCID: PMC3943558 DOI: 10.1107/s0909049513016567] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Accepted: 06/14/2013] [Indexed: 06/02/2023]
Abstract
Among brain tumors, glioblastoma multiforme appears as one of the most aggressive forms of cancer with poor prognosis and no curative treatment available. Recently, a new kind of radio-chemotherapy has been developed using synchrotron irradiation for the photoactivation of molecules with high-Z elements such as cisplatin (PAT-Plat). This protocol showed a cure of 33% of rats bearing the F98 glioma but the efficiency of the treatment was only measured in terms of overall survival. Here, characterization of the effects of the PAT-Plat on tumor volume and tumor blood perfusion are proposed. Changes in these parameters may predict the overall survival. Firstly, changes in tumor growth of the F98 glioma implanted in the hindlimb of nude mice after the PAT-Plat treatment and its different modalities have been characterized. Secondly, the effects of the treatment on tumor blood perfusion have been observed by intravital two-photon microscopy. Cisplatin alone had no detectable effect on the tumor volume. A reduction of tumor growth was measured after a 15 Gy synchrotron irradiation, but the whole therapy (15 Gy irradiation + cisplatin) showed the largest decrease in tumor growth, indicating a synergistic effect of both synchrotron irradiation and cisplatin treatment. A high number of unperfused vessels (52%) were observed in the peritumoral area in comparison with untreated controls. In the PAT-Plat protocol the transient tumor growth reduction may be due to synergistic interactions of tumor-cell-killing effects and reduction of the tumor blood perfusion.
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Affiliation(s)
- Clement Ricard
- INSERM U836, Grenoble Institut des Neurosciences, Grenoble, France
- Université Joseph Fourier, Grenoble, France
| | - Manuel Fernandez
- INSERM U836, Grenoble Institut des Neurosciences, Grenoble, France
- Université Joseph Fourier, Grenoble, France
| | | | - Didier Wion
- INSERM U836, Grenoble Institut des Neurosciences, Grenoble, France
- Université Joseph Fourier, Grenoble, France
| | - Jean-Claude Vial
- Université Joseph Fourier, Grenoble, France
- CNRS UMR 5588, Laboratoire Interdisciplinaire de Physique, St Martin d’Hères, France
| | - Christoph Segebarth
- INSERM U836, Grenoble Institut des Neurosciences, Grenoble, France
- Université Joseph Fourier, Grenoble, France
| | - Boudewijn van der Sanden
- INSERM U836, Grenoble Institut des Neurosciences, Grenoble, France
- Université Joseph Fourier, Grenoble, France
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Hiramatsu R, Kawabata S, Furuse M, Miyatake SI, Kuroiwa T. Identification of early and distinct glioblastoma response patterns treated by boron neutron capture therapy not predicted by standard radiographic assessment using functional diffusion map. Radiat Oncol 2013; 8:192. [PMID: 23915330 PMCID: PMC3751226 DOI: 10.1186/1748-717x-8-192] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 07/30/2013] [Indexed: 12/21/2022] Open
Abstract
Background Radiologic response of brain tumors is traditionally assessed according to the Macdonald criteria 10 weeks from the start of therapy. Because glioblastoma (GB) responds in days rather than weeks after boron neutron capture therapy (BNCT) that is a form of tumor-selective particle radiation, it is inconvenient to use the Macdonald criteria to assess the therapeutic efficacy of BNCT by gadolinium-magnetic resonance imaging (Gd-MRI). Our study assessed the utility of functional diffusion map (fDM) for evaluating response patterns in GB treated by BNCT. Methods The fDM is an image assessment using time-dependent changes of apparent diffusion coefficient (ADC) in tumors on a voxel-by-voxel approach. Other than time-dependent changes of ADC, fDM can automatically assess minimum/maximum ADC, Response Evaluation Criteria In Solid Tumors (RECIST), and the volume of enhanced lesions on Gd-MRI over time. We assessed 17 GB patients treated by BNCT using fDM. Additionally, in order to verify our results, we performed a histopathological examination using F98 rat glioma models. Results Only the volume of tumor with decreased ADC by fDM at 2 days after BNCT was a good predictor for GB patients treated by BNCT (P value = 0.022 by log-rank test and 0.033 by wilcoxon test). In a histopathological examination, brain sections of F98 rat glioma models treated by BNCT showed cell swelling of both the nuclei and the cytoplasm compared with untreated rat glioma models. Conclusions The fDM could identify response patterns in BNCT-treated GB earlier than a standard radiographic assessment. Early detection of treatment failure can allow a change or supplementation before tumor progression and might lead to an improvement of GB patients’ prognosis.
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Affiliation(s)
- Ryo Hiramatsu
- Department of Neurosurgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka 569-8686, Japan
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Photoactivation of gold nanoparticles for glioma treatment. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2013; 9:1089-97. [PMID: 23643529 DOI: 10.1016/j.nano.2013.04.007] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 03/29/2013] [Accepted: 04/17/2013] [Indexed: 12/26/2022]
Abstract
UNLABELLED Radiosensitization efficacy of gold nanoparticles (AuNPs) with low energy radiations (88 keV) was evaluated in vitro and in vivo on rats bearing glioma. In vitro, a significant dose-enhancement factor was measured by clonogenic assays after irradiation with synchrotron radiation of F98 glioma cells in presence of AuNPs (1.9 and 15 nm in diameter). In vivo, 1.9 nm nanoparticles were found to be toxic following intracerebral delivery in rats bearing glioma, whether no toxicity was observed using 15 nm nanoparticles at the same concentration (50 mg/mL). The therapeutic efficacy of gold photoactivation was determined by irradiating the animals after intracerebral infusion of AuNPs. Survival of rats that had received the combination of treatments (AuNPs: 50 mg/mL, 15 Gy) was significantly increased in comparison with the survival of rats that had received irradiation alone. In conclusion, this experimental approach is promising and further studies are foreseen for improving its therapeutic efficacy. FROM THE CLINICAL EDITOR These investigators report that gold nanoparticles of the correct size can be used to enhance the effects of irradiation in the context of a glioma model. Since many of the glioma varieties are currently incurable, this or similar approaches may find their way to clinical trials in the near future.
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Huo T, Barth RF, Yang W, Nakkula RJ, Koynova R, Tenchov B, Chaudhury AR, Agius L, Boulikas T, Elleaume H, Lee RJ. Preparation, biodistribution and neurotoxicity of liposomal cisplatin following convection enhanced delivery in normal and F98 glioma bearing rats. PLoS One 2012; 7:e48752. [PMID: 23152799 PMCID: PMC3496719 DOI: 10.1371/journal.pone.0048752] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Accepted: 10/01/2012] [Indexed: 11/18/2022] Open
Abstract
The purpose of this study was to evaluate two novel liposomal formulations of cisplatin as potential therapeutic agents for treatment of the F98 rat glioma. The first was a commercially produced agent, Lipoplatin™, which currently is in a Phase III clinical trial for treatment of non-small cell lung cancer (NSCLC). The second, produced in our laboratory, was based on the ability of cisplatin to form coordination complexes with lipid cholesteryl hemisuccinate (CHEMS). The in vitro tumoricidal activity of the former previously has been described in detail by other investigators. The CHEMS liposomal formulation had a Pt loading efficiency of 25% and showed more potent in vitro cytotoxicity against F98 glioma cells than free cisplatin at 24 h. In vivo CHEMS liposomes showed high retention at 24 h after intracerebral (i.c.) convection enhanced delivery (CED) to F98 glioma bearing rats. Neurotoxicologic studies were carried out in non-tumor bearing Fischer rats following i.c. CED of Lipoplatin™ or CHEMS liposomes or their "hollow" counterparts. Unexpectedly, Lipoplatin™ was highly neurotoxic when given i.c. by CED and resulted in death immediately following or within a few days after administration. Similarly "hollow" Lipoplatin™ liposomes showed similar neurotoxicity indicating that this was due to the liposomes themselves rather than the cisplatin. This was particularly surprising since Lipoplatin™ has been well tolerated when administered intravenously. In contrast, CHEMS liposomes and their "hollow" counterparts were clinically well tolerated. However, a variety of dose dependent neuropathologic changes from none to severe were seen at either 10 or 14 d following their administration. These findings suggest that further refinements in the design and formulation of cisplatin containing liposomes will be required before they can be administered i.c. by CED for the treatment of brain tumors and that a formulation that may be safe when given systemically may be highly neurotoxic when administered directly into the brain.
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Affiliation(s)
- Tianyao Huo
- Department of Pathology, The Ohio State University, Columbus, Ohio, United States of America
| | - Rolf F. Barth
- Department of Pathology, The Ohio State University, Columbus, Ohio, United States of America
- * E-mail:
| | - Weilian Yang
- Department of Pathology, The Ohio State University, Columbus, Ohio, United States of America
| | - Robin J. Nakkula
- Department of Pathology, The Ohio State University, Columbus, Ohio, United States of America
| | - Rumiana Koynova
- Division of Pharmaceutics, College of Pharmacy, The Ohio State University, Columbus, Ohio, United States of America
| | - Boris Tenchov
- Division of Pharmaceutics, College of Pharmacy, The Ohio State University, Columbus, Ohio, United States of America
| | - Abhik Ray Chaudhury
- Department of Pathology, The Ohio State University, Columbus, Ohio, United States of America
| | - Lawrence Agius
- Department of Pathology, Mater Dei Hospital and University of Malta Medical School, Msida, Malta
| | - Teni Boulikas
- Regulon Inc., Mountain View, California, United States of America
| | | | - Robert J. Lee
- Division of Pharmaceutics, College of Pharmacy, The Ohio State University, Columbus, Ohio, United States of America
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Choi GH, Seo SJ, Kim KH, Kim HT, Park SH, Lim JH, Kim JK. Photon activated therapy (PAT) using monochromatic synchrotron X-rays and iron oxide nanoparticles in a mouse tumor model: feasibility study of PAT for the treatment of superficial malignancy. Radiat Oncol 2012; 7:184. [PMID: 23111059 PMCID: PMC3549855 DOI: 10.1186/1748-717x-7-184] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2012] [Accepted: 10/28/2012] [Indexed: 11/10/2022] Open
Abstract
Background X-rays are known to interact with metallic nanoparticles, producing photoelectric species as radiosensitizing effects, and have been exploited in vivo mainly with gold nanoparticles. The purpose of this study was to investigate the potential of sensitizing effect of iron oxide nanoparticles for photon activated therapy. Methods X-rays photon activated therapy (PAT) was studied by treating CT26 tumor cells and CT26 tumor-bearing mice loaded with 13-nm diameter FeO NP, and irradiating them at 7.1 keV near the Fe K-edge using synchrotron x-rays radiation. Survival of cells was determined by MTT assay, and tumor regression assay was performed for in vivo model experiment. The results of PAT treated groups were compared with x-rays alone control groups. Results A more significant reduction in viability and damage was observed in the FeO NP-treated irradiated cells, compared to the radiation alone group (p < 0.04). Injection of FeO NP (100 mg/kg) 30 min prior to irradiation elevated the tumor concentration of magnetite to 40 μg of Fe/g tissue, with a tumor-to-muscle ratio of 17.4. The group receiving FeO NP and radiation of 10 Gy showed 80% complete tumor regression (CTR) after 15–35 days and relapse-free survival for up to 6 months, compared to the control group, which showed growth retardation, resulting in 80% fatality. The group receiving radiation of 40 Gy showed 100% CTR in all cases irrespective of the presence of FeO NP, but CTR was achieved earlier in the PAT-treated group compared with the radiation alone group. Conclusions An iron oxide nanoparticle enhanced therapeutic effect with relatively low tissue concentration of iron and 10 Gy of monochromatic X-rays. Since 7.1 keV X-rays is attenuated very sharply in the tissue, FeO NP-PAT may have promise as a potent treatment option for superficial malignancies in the skin, like chest wall recurrence of breast cancer.
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Affiliation(s)
- Gi-Hwan Choi
- Department of Neurosurgery, School of Medicine, Catholic University of Daegu, Korea
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