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Bromma K, Beckham W, Chithrani DB. Utilizing two-dimensional monolayer and three-dimensional spheroids to enhance radiotherapeutic potential by combining gold nanoparticles and docetaxel. Cancer Nanotechnol 2023; 14:80. [PMID: 37867929 PMCID: PMC10587262 DOI: 10.1186/s12645-023-00231-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 10/08/2023] [Indexed: 10/24/2023] Open
Abstract
Background Much in vitro research on the applicability of gold nanoparticles (GNPs) in cancer treatment has been focused on two-dimensional (2D) monolayer models. To improve this, we explored the effect of the combination of GNPs and docetaxel (DTX) with radiotherapy (RT) in a more complex three-dimensional (3D) spheroid that can better mimic a real tumour microenvironment. Methods Two cell lines, prostate cancer LNCaP and cervical cancer HeLa, were grown in monolayer and spheroids. Cells were dosed with GNPs at a concentration of 10 μ g / mL and with DTX at a dose that inhibited growth-rate by 50%. Samples were irradiated 24 h after drug dosing with 2 Gy, 5 Gy, or 10 Gy using a 6 MV beam. Monolayer cells had the DNA double-strand breaks (DSBs) probed 24 h post-radiation, and cell proliferation observed over 7 days. Spheroid proliferation was monitored over 14 days along with spheroid volume measurements. Results In DTX and GNP-treated monolayer samples, there is decreased survival after irradiation with 5 and 10 Gy of 16-24% and an increase in DSBs of 91.6-109.9%, compared to DTX. In spheroids, GNPs decreased the surviving cells by 10.54-15.61% compared to control, while GNPs and DTX decreased survival by 20.9-31.04%. There is reduced spheroid volume 14 days after treatment with the triple combination. Conclusions Combining GNPs and DTX leads to a synergistic radiosensitization effect in spheroids, which can better mimic the tumour microenvironment. Testing treatment modalities with spheroids and RT may allow a quicker translation to the clinic. Supplementary Information The online version contains supplementary material available at 10.1186/s12645-023-00231-5.
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Affiliation(s)
- Kyle Bromma
- Department of Physics and Astronomy, University of Victoria, Victoria, BC Canada
| | - Wayne Beckham
- Department of Physics and Astronomy, University of Victoria, Victoria, BC Canada
- British Columbia Cancer, Victoria, BC Canada
| | - Devika B. Chithrani
- Department of Physics and Astronomy, University of Victoria, Victoria, BC Canada
- British Columbia Cancer, Victoria, BC Canada
- Centre for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria, BC Canada
- Division of Medical Sciences, University of Victoria, Victoria, BC Canada
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Jackson N, Hill I, Alhussan A, Bromma K, Morgan J, Abousaida B, Zahra Y, Mackeyev Y, Beckham W, Herchko S, Krishnan S, Chithrani DB. Dual enhancement in the radiosensitivity of prostate cancer through nanoparticles and chemotherapeutics. Cancer Nanotechnol 2023; 14:75. [PMID: 37781236 PMCID: PMC10539438 DOI: 10.1186/s12645-023-00228-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 09/20/2023] [Indexed: 10/03/2023] Open
Abstract
Background Radiotherapy (RT) is an essential component in the treatment regimens for many cancer patients. However, the dose escalation required to improve curative results is hindered due to the normal tissue toxicity that is induced. The introduction of radiosensitizers to RT treatment is an avenue that is currently being explored to overcome this issue. By introducing radiosensitizers into tumor sites, it is possible to preferentially enhance the local dose deposited. Gold nanoparticles (GNPs) are a potential candidate that have shown great promise in increasing the radiosensitivity of cancer cells through an enhancement in DNA damage. Furthermore, docetaxel (DTX) is a chemotherapeutic agent that arrests cells in the G2/M phase of the cell cycle, the phase most sensitive to radiation damage. We hypothesized that by incorporating DTX to GNP-enhanced radiotherapy treatment, we could further improve the radiosensitization experienced by cancer cells. To assess this strategy, we analyzed the radiotherapeutic effects on monolayer cell cultures in vitro, as well as on a mice prostate xenograft model in vivo while using clinically feasible concentrations for both GNPs and DTX. Results The introduction of DTX to GNP-enhanced radiotherapy further increased the radiotherapeutic effects experienced by cancer cells. A 38% increase in DNA double-strand breaks was observed with the combination of GNP/DTX vs GNP alone after a dose of 2 Gy was administered. In vivo results displayed significant reduction in tumor growth over a 30-day observation period with the treatment of GNP/DTX/RT when compared to GNP/RT after a single 5 Gy dose was given to mice. The treatment strategy also resulted in 100% mice survival, which was not observed for other treatment conditions. Conclusions Incorporating DTX to work in unison with GNPs and RT can increase the efficacy of RT treatment. Our study suggests that the treatment strategy could improve tumor control through local dose enhancement. As the concentrations used in this study are clinically feasible, there is potential for this strategy to be translated into clinical settings. Supplementary Information The online version contains supplementary material available at 10.1186/s12645-023-00228-0.
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Affiliation(s)
- Nolan Jackson
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2 Canada
| | - Iona Hill
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center, Houston, TX 77030 USA
| | - Abdulaziz Alhussan
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2 Canada
| | - Kyle Bromma
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2 Canada
| | - Jessica Morgan
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC V8P 5C2 Canada
- Trev and Joyce Deeley Research Centre, BC Cancer, Victoria, BC V8R 6V5 Canada
| | - Belal Abousaida
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center, Houston, TX 77030 USA
| | - Yasmin Zahra
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, FL 32224 USA
| | - Yuri Mackeyev
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center, Houston, TX 77030 USA
| | - Wayne Beckham
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2 Canada
- British Columbia Cancer-Victoria, Victoria, BC V8R 6V5 Canada
| | - Steven Herchko
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, FL 32224 USA
| | - Sunil Krishnan
- Vivian L. Smith Department of Neurosurgery, The University of Texas Health Science Center, Houston, TX 77030 USA
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, FL 32224 USA
| | - Devika Basnagge Chithrani
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2 Canada
- Centre for Advanced Materials and Related Technologies, Department of Chemistry, University of Victoria, Victoria, BC V8P 5C2 Canada
- Division of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2 Canada
- Department of Computer Science, Mathematics, Physics and Statistics, Okanagan Campus, University of British Columbia, Kelowna, BC V1V 1V7 Canada
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Bromma K, Dos Santos N, Barta I, Alexander A, Beckham W, Krishnan S, Chithrani DB. Enhancing nanoparticle accumulation in two dimensional, three dimensional, and xenograft mouse cancer cell models in the presence of docetaxel. Sci Rep 2022; 12:13508. [PMID: 35931743 PMCID: PMC9356051 DOI: 10.1038/s41598-022-17752-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 07/30/2022] [Indexed: 11/10/2022] Open
Abstract
Recent clinical trials show docetaxel (DTX), given in conjunction with radiation therapy (RT) and androgen suppression, improves survival in high-risk prostate cancer. Addition of gold nanoparticles (GNPs) to this current DTX/RT protocol is expected to further improve therapeutic benefits remarkably. However, the foundation for the triple combination of RT, DTX, and GNPs must be elucidated to ensure quicker facilitation to the clinic. In this study, we explored the use of low concentrations of DTX combined with GNPs in two prostate cancer cell lines in a two-dimensional monolayer, a three-dimensional spheroid, and a mouse xenograft model. When used together, DTX and GNPs induced a nearly identical relative increase in uptake of gold in both the spheroid model and the mouse xenograft, which saw a 130% and 126% increase respectively after 24 h, showcasing the benefit of using spheroids as an in vitro model to better optimize in vivo experiments. Further, the benefits of using low concentrations of DTX combined with GNPs extended for over 72 h, allowing for less frequency in dosing when translating to the clinic. Overall, these results highlight the benefits of using DTX combined with GNPs and lays the groundwork for the translation of the triple combination of RT, GNPs, and DTX to the clinic.
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Affiliation(s)
- Kyle Bromma
- Department of Physics and Astronomy, University of Victoria, Victoria, BC, Canada
| | - Nancy Dos Santos
- British Columbia Cancer Research Institute, Vancouver, BC, Canada
| | - Ingrid Barta
- Animal Care Services, University of British Columbia, Vancouver, BC, Canada
| | - Abraham Alexander
- Department of Physics and Astronomy, University of Victoria, Victoria, BC, Canada.,Department of Surgery, University of British Columbia, Vancouver, BC, Canada
| | - Wayne Beckham
- Department of Physics and Astronomy, University of Victoria, Victoria, BC, Canada.,British Columbia Cancer, Victoria, BC, Canada
| | - Sunil Krishnan
- Department of Radiation Oncology, Mayo Clinic, Jacksonville, Florida, USA
| | - Devika B Chithrani
- Department of Physics and Astronomy, University of Victoria, Victoria, BC, Canada. .,British Columbia Cancer, Victoria, BC, Canada. .,Centre for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria, BC, Canada. .,Division of Medical Sciences, University of Victoria, Victoria, BC, Canada.
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Alhussan A, Bromma K, Perez MM, Beckham W, Alexander AS, Howard PL, Chithrani DB. Docetaxel-Mediated Uptake and Retention of Gold Nanoparticles in Tumor Cells and in Cancer-Associated Fibroblasts. Cancers (Basel) 2021; 13:cancers13133157. [PMID: 34202574 PMCID: PMC8269007 DOI: 10.3390/cancers13133157] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/15/2021] [Accepted: 06/22/2021] [Indexed: 12/24/2022] Open
Abstract
Simple Summary Currently, radiotherapy and chemotherapy are the most commonly used options, in addition to surgery, to treat cancer. There has been tremendous progress in interfacing nanotechnology to current cancer therapeutic protocols. For example, nanoparticles are used as drug carriers in chemotherapy and as radiation dose enhancers in radiotherapy. However, most of the work to date has been focused on tumor cells. To make significant progress in this field, we need to consider the tumor microenvironment, especially cancer-associated fibroblast cells that promote tumor growth. Our study shows the potential of targeting both tumor cells and cancer-associated fibroblasts to reap the full benefits of cancer nanomedicine. Abstract Due to recent advances in nanotechnology, the application of nanoparticles (NPs) in cancer therapy has become a leading area in cancer research. Despite the importance of cancer-associated fibroblasts (CAFs) in creating an optimal niche for tumor cells to grow extensively, most of the work has been focused on tumor cells. Therefore, to effectively use NPs for therapeutic purposes, it is important to elucidate the extent of NP uptake and retention in tumor cells and CAFs. Three tumor cell lines and three CAF cell lines were studied using gold NPs (GNPs) as a model NP system. We found a seven-fold increase in NP uptake in CAFs compared to tumor cells. The retention percentage of NPs was three-fold higher in tumor cells as compared to CAFs. Furthermore, NP uptake and retention were significantly enhanced using a 50 nM concentration of docetaxel (DTX). NP uptake was improved by a factor of three in tumor cells and a factor of two in CAFs, while the retention of NPs was two-fold higher in tumor cells compared to CAFs, 72 h post-treatment with DTX. However, the quantity of NPs in CAFs was still three-fold higher compared to tumor cells. Our quantitative data were supported by qualitative imaging data. We believe that targeting of NPs in the presence of DTX is a very promising approach to accumulate a higher percentage of NPs and maintain a longer retention in both tumor cells and CAFs for achieving the full therapeutic potential of cancer nanotechnology.
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Affiliation(s)
- Abdulaziz Alhussan
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada; (A.A.); (K.B.); (W.B.)
| | - Kyle Bromma
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada; (A.A.); (K.B.); (W.B.)
| | - Monica Mesa Perez
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC V8P 5C2, Canada; (M.M.P.); (P.L.H.)
| | - Wayne Beckham
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada; (A.A.); (K.B.); (W.B.)
- Radiation Oncology, British Columbia Cancer-Victoria, Victoria, BC V8R 6V5, Canada;
| | - Abraham S Alexander
- Radiation Oncology, British Columbia Cancer-Victoria, Victoria, BC V8R 6V5, Canada;
| | - Perry L Howard
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC V8P 5C2, Canada; (M.M.P.); (P.L.H.)
| | - Devika B Chithrani
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada; (A.A.); (K.B.); (W.B.)
- Radiation Oncology, British Columbia Cancer-Victoria, Victoria, BC V8R 6V5, Canada;
- Centre for Advanced Materials and Related Technologies, Department of Chemistry, University of Victoria, Victoria, BC V8P 5C2, Canada
- Centre for Biomedical Research, Department of Biology, University of Victoria, Victoria, BC V8P 5C2, Canada
- Department of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada
- Department of Computer Science, Mathematics, Physics and Statistics, Okanagan Campus, University of British Columbia, Kelowna, BC V1V 1V7, Canada
- Correspondence:
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Bromma K, Alhussan A, Perez MM, Howard P, Beckham W, Chithrani DB. Three-Dimensional Tumor Spheroids as a Tool for Reliable Investigation of Combined Gold Nanoparticle and Docetaxel Treatment. Cancers (Basel) 2021; 13:cancers13061465. [PMID: 33806801 PMCID: PMC8004664 DOI: 10.3390/cancers13061465] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/12/2021] [Accepted: 03/19/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Due to the normal tissue toxicity induced by standard therapeutic options such as radiotherapy and chemotherapy, alternative solutions are being explored. Nanomaterials, such as gold nanoparticles, can help reduce side effects by increasing targeted dose to the tumor as well as act as a drug delivery system. Many nano-based systems are tested in a two-dimensional monolayer in the lab, which is not representative of the complex tumor microenvironment. Towards an accelerated translation to the clinic, use of nanomaterials, like the radio-sensitizing gold nanoparticles, were tested in three-dimensional spheroids, which exhibit many properties present in a real tumor such as the extracellular matrix, necrotic cores, and nutrient gradients. This work paves the way for more accurate experimentation in the lab that is more indicative of a real tumor response, leading to a higher chance of success in future clinical studies and clinical treatment. Abstract Radiotherapy and chemotherapy are the gold standard for treating patients with cancer in the clinic but, despite modern advances, are limited by normal tissue toxicity. The use of nanomaterials, such as gold nanoparticles (GNPs), to improve radiosensitivity and act as drug delivery systems can mitigate toxicity while increasing deposited tumor dose. To expedite a quicker clinical translation, three-dimensional (3D) tumor spheroid models that can better approximate the tumor environment compared to a two-dimensional (2D) monolayer model have been used. We tested the uptake of 15 nm GNPs and 50 nm GNPs on a monolayer and on spheroids of two cancer cell lines, CAL-27 and HeLa, to evaluate the differences between a 2D and 3D model in similar conditions. The anticancer drug docetaxel (DTX) which can act as a radiosensitizer, was also utilized, informing future potential of GNP-mediated combined therapeutics. In the 2D monolayer model, the addition of DTX induced a small, non-significant increase of uptake of GNPs of between 13% and 24%, while in the 3D spheroid model, DTX increased uptake by between 47% and 186%, with CAL-27 having a much larger increase relative to HeLa. Further, the depth of penetration of 15 nm GNPs over 50 nm GNPs increased by 33% for CAL-27 spheroids and 17% for HeLa spheroids. These results highlight the necessity to optimize GNP treatment conditions in a more realistic tumor-life environment. A 3D spheroid model can capture important details, such as different packing densities from different cancer cell lines, which are absent from a simple 2D monolayer model.
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Affiliation(s)
- Kyle Bromma
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada; (K.B.); (A.A.); (W.B.)
| | - Abdulaziz Alhussan
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada; (K.B.); (A.A.); (W.B.)
| | - Monica Mesa Perez
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC V8P 5C2, Canada; (M.M.P.); (P.H.)
| | - Perry Howard
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC V8P 5C2, Canada; (M.M.P.); (P.H.)
| | - Wayne Beckham
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada; (K.B.); (A.A.); (W.B.)
- British Columbia Cancer-Victoria, Victoria, BC V8R 6V5, Canada
| | - Devika B. Chithrani
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada; (K.B.); (A.A.); (W.B.)
- British Columbia Cancer-Victoria, Victoria, BC V8R 6V5, Canada
- Centre for Advanced Materials and Related Technologies, Department of Chemistry, University of Victoria, Victoria, BC V8P 5C2, Canada
- Centre for Biomedical Research, Department of Biology, University of Victoria, Victoria, BC V8P 5C2, Canada
- Department of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada
- Department of Computer Science, Mathematics, Physics and Statistics, Okanagan Campus, University of British Columbia, Kelowna, BC V1V 1V7, Canada
- Correspondence:
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Schuemann J, Bagley AF, Berbeco R, Bromma K, Butterworth KT, Byrne HL, Chithrani BD, Cho SH, Cook JR, Favaudon V, Gholami YH, Gargioni E, Hainfeld JF, Hespeels F, Heuskin AC, Ibeh UM, Kuncic Z, Kunjachan S, Lacombe S, Lucas S, Lux F, McMahon S, Nevozhay D, Ngwa W, Payne JD, Penninckx S, Porcel E, Prise KM, Rabus H, Ridwan SM, Rudek B, Sanche L, Singh B, Smilowitz HM, Sokolov KV, Sridhar S, Stanishevskiy Y, Sung W, Tillement O, Virani N, Yantasee W, Krishnan S. Roadmap for metal nanoparticles in radiation therapy: current status, translational challenges, and future directions. Phys Med Biol 2020; 65:21RM02. [PMID: 32380492 DOI: 10.1088/1361-6560/ab9159] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
This roadmap outlines the potential roles of metallic nanoparticles (MNPs) in the field of radiation therapy. MNPs made up of a wide range of materials (from Titanium, Z = 22, to Bismuth, Z = 83) and a similarly wide spectrum of potential clinical applications, including diagnostic, therapeutic (radiation dose enhancers, hyperthermia inducers, drug delivery vehicles, vaccine adjuvants, photosensitizers, enhancers of immunotherapy) and theranostic (combining both diagnostic and therapeutic), are being fabricated and evaluated. This roadmap covers contributions from experts in these topics summarizing their view of the current status and challenges, as well as expected advancements in technology to address these challenges.
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Affiliation(s)
- Jan Schuemann
- Department of Radiation Oncology, Massachusetts General Hospital & Harvard Medical School, Boston, MA 02114, United States of America
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Bromma K, Bannister A, Kowalewski A, Cicon L, Chithrani DB. Elucidating the fate of nanoparticles among key cell components of the tumor microenvironment for promoting cancer nanotechnology. Cancer Nanotechnol 2020; 11:8. [PMID: 32849921 PMCID: PMC7437649 DOI: 10.1186/s12645-020-00064-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 08/06/2020] [Indexed: 02/07/2023] Open
Abstract
Successful integration of nanotechnology into the current paradigm of cancer therapy requires proper understanding of the interface between nanoparticles (NPs) and cancer cells, as well as other key components within the tumor microenvironment (TME), such as normal fibroblasts (FBs) and cancer-associated FBs (CAFs). So far, much focus has been on cancer cells, but FBs and CAFs also play a critical role: FBs suppress the tumor growth while CAFs promote it. It is not yet known how NPs interact with FBs and CAFs compared to cancer cells. Hence, our goal was to elucidate the extent of NP uptake, retention, and toxicity in cancer cells, FBs, and CAFs to further understand the fate of NPs in a real tumor-like environment. The outcome of this would guide designing of NP-based delivery systems to fully exploit the TME for a better therapeutic outcome. We used gold nanoparticles as our model NP system due to their numerous applications in cancer therapy, including radiotherapy and chemotherapy. A cervical cancer cell line, HeLa, and a triple-negative breast cancer cell line, MDA-MB-231 were chosen as cancer cell lines. For this study, a clinically feasible 0.2 nM concentration of GNPs was employed. According to our results, the cancer cells and CAFs had over 25- and 10-fold higher NP uptake per unit cell volume compared to FBs, respectively. Further, the cancer cells and CAFs had over 30% higher NP retention compared to FBs. There was no observed significant toxicity due to GNPs in all the cell lines studied. Higher uptake and retention of NPs in cancer cells and CAFs vs FBs is very important in promoting NP-based applications in cancer therapy. Our results show potential in modulating uptake and retention of GNPs among key components of TME, in an effort to develop NP-based strategies to suppress the tumor growth. An ideal NP-based platform would eradicate tumor cells, protect FBs, and deactivate CAFs. Therefore, this study lays a road map to exploit the TME for the advancement of "smart" nanomedicines that would constitute the next generation of cancer therapeutics.
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Affiliation(s)
- Kyle Bromma
- Department of Physics and Astronomy, University of Victoria, Victoria, BC Canada
| | - Aaron Bannister
- Department of Physics and Astronomy, University of Victoria, Victoria, BC Canada
| | | | - Leah Cicon
- Department of Physics and Astronomy, University of Victoria, Victoria, BC Canada
| | - Devika B. Chithrani
- Department of Physics and Astronomy, University of Victoria, Victoria, BC Canada
- Centre for Advanced Materials and Related Technologies (CAMTEC), Victoria, BC Canada
- Centre for Biomedical Research, University of Victoria, Victoria, BC Canada
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Bannister AH, Bromma K, Sung W, Monica M, Cicon L, Howard P, Chow RL, Schuemann J, Chithrani DB. Modulation of nanoparticle uptake, intracellular distribution, and retention with docetaxel to enhance radiotherapy. Br J Radiol 2019; 93:20190742. [PMID: 31778316 DOI: 10.1259/bjr.20190742] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVE One of the major issues in current radiotherapy (RT) is the normal tissue toxicity. A smart combination of agents within the tumor would allow lowering the RT dose required while minimizing the damage to healthy tissue surrounding the tumor. We chose gold nanoparticles (GNPs) and docetaxel (DTX) as our choice of two radiosensitizing agents. They have a different mechanism of action which could lead to a synergistic effect. Our first goal was to assess the variation in GNP uptake, distribution, and retention in the presence of DTX. Our second goal was to assess the therapeutic results of the triple combination, RT/GNPs/DTX. METHODS We used HeLa and MDA-MB-231 cells for our study. Cells were incubated with GNPs (0.2 nM) in the absence and presence of DTX (50 nM) for 24 h to determine uptake, distribution, and retention of NPs. For RT experiments, treated cells were given a 2 Gy dose of 6 MV photons using a linear accelerator. RESULTS Concurrent treatment of DTX and GNPs resulted in over 85% retention of GNPs in tumor cells. DTX treatment also forced GNPs to be closer to the most important target, the nucleus, resulting in a decrease in cell survival and increase in DNA damage with the triple combination of RT/ GNPs/DTX vs RT/DTX. Our experimental therapeutic results were supported by Monte Carlo simulations. CONCLUSION The ability to not only trap GNPs at clinically feasible doses but also to retain them within the cells could lead to meaningful fractionated treatments in future combined cancer therapy. Furthermore, the suggested triple combination of RT/GNPs/DTX may allow lowering the RT dose to spare surrounding healthy tissue. ADVANCES IN KNOWLEDGE This is the first study to show intracellular GNP transport disruption by DTX, and its advantage in radiosensitization.
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Affiliation(s)
| | - Kyle Bromma
- Department of Physics and Astronomy, University of Victoria, Victoria, BC, Canada
| | - Wonmo Sung
- Department of Radiation Oncology, Massachusetts General Hospital & Harvard Medical School, Boston, MA, USA
| | - Mesa Monica
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada
| | - Leah Cicon
- Department of Physics and Astronomy, University of Victoria, Victoria, BC, Canada
| | - Perry Howard
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada
| | - Robert L Chow
- Department of Biology, University of Victoria, Victoria, BC, Canada
| | - Jan Schuemann
- Department of Radiation Oncology, Massachusetts General Hospital & Harvard Medical School, Boston, MA, USA
| | - Devika Basnagge Chithrani
- Department of Physics and Astronomy, University of Victoria, Victoria, BC, Canada.,British Columbia Cancer Agency, Victoria, BC, Canada.,Centre for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria, BC, Canada.,Centre for Biomedical Research, University of Victoria, Victoria, BC, Canada.,Division of medical sciences, University of Victoria, Victoria, BC, Canada
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Rieck K, Bromma K, Sung W, Bannister A, Schuemann J, Chithrani DB. Modulation of gold nanoparticle mediated radiation dose enhancement through synchronization of breast tumor cell population. Br J Radiol 2019; 92:20190283. [PMID: 31219711 PMCID: PMC6724617 DOI: 10.1259/bjr.20190283] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/23/2019] [Accepted: 06/18/2019] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE The incorporation of high atomic number materials such as gold nanoparticles (GNPs) into tumor cells is being tested to enhance the local radiotherapy (RT) dose. It is also known that the radiosensitivity of tumor cells depends on the phase of their cell cycle. Triple combination of GNPs, phase of tumor cell population, and RT for improved outcomes in cancer treatment. METHODS We used a double-thymidine block method for synchronization of the tumor cell population. GNPs of diameters 17 and 46 nm were used to capture the size dependent effects. A radiation dose of 2 Gy with 6 MV linear accelerator was used to assess the efficacy of this proposed combined treatment. A triple negative breast cancer cell line, MDA-MB-231 was chosen as the model cell line. Monte Carlo (MC) calculations were done to predict the GNP-mediated cell death using the experimental GNP uptake data. RESULTS There was a 1.5- and 2- fold increase in uptake of 17 and 46 nm GNPs in the synchronized cell population, respectively. A radiation dose of 2 Gy with clinically relevant 6 MV photons resulted in a 62 and 38 % enhancement in cell death in the synchronized cell population with the incorporation of 17 and 46 nm GNPs, respectively. MC data supported the experimental data, but to a lesser extent. CONCLUSION A triple combination of GNPs, cell cycle synchronization, and RT could pave the way to enhance the local radiation dose while minimizing side effects to the surrounding healthy tissue. ADVANCES IN KNOWLEDGE This is the first study to show that the combined use of GNPs, phase of tumor cell population, and RT could enhance tumor cell death.
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Affiliation(s)
- Kristy Rieck
- Department of Physics and Astronomy, University of Victoria, Victoria, BC, Canada
| | - Kyle Bromma
- Department of Physics and Astronomy, University of Victoria, Victoria, BC, Canada
| | - Wonmo Sung
- Massachusetts General Hospital & Harvard Medical School, Boston, MA, USA
| | - Aaron Bannister
- Department of Physics and Astronomy, University of Victoria, Victoria, BC, Canada
| | - Jan Schuemann
- Massachusetts General Hospital & Harvard Medical School, Boston, MA, USA
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Bromma K, Rieck K, Kulkarni J, O’Sullivan C, Sung W, Cullis P, Schuemann J, Chithrani DB. Use of a lipid nanoparticle system as a Trojan horse in delivery of gold nanoparticles to human breast cancer cells for improved outcomes in radiation therapy. Cancer Nanotechnol 2019. [DOI: 10.1186/s12645-019-0046-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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11
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Yang C, Bromma K, Sung W, Schuemann J, Chithrani D. Determining the Radiation Enhancement Effects of Gold Nanoparticles in Cells in a Combined Treatment with Cisplatin and Radiation at Therapeutic Megavoltage Energies. Cancers (Basel) 2018; 10:cancers10050150. [PMID: 29786642 PMCID: PMC5977123 DOI: 10.3390/cancers10050150] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 05/12/2018] [Accepted: 05/14/2018] [Indexed: 11/16/2022] Open
Abstract
Combined use of chemotherapy and radiation therapy is commonly used in cancer treatment, but the toxic effects on normal tissue are a major limitation. This study assesses the potential to improve radiation therapy when combining gold nanoparticle (GNP) mediated radiation sensitization with chemoradiation compared to chemoradiation alone. Incorporation of GNPs with 2 Gy, 6 MV (megavoltage) radiation resulted in a 19 ± 6% decrease in survival of MDA-MB-231 cells. Monte-Carlo simulations were performed to assess dosimetric differences in the presence of GNPs in radiation. The results show that physics dosimetry represents a small fraction of the observed effect. The survival fraction of the cells exposed to GNPs, cisplatin, and radiation was 0.16 ± 0.007, while cells treated with cisplatin and radiation only was 0.23 ± 0.011. The presence of GNPs resulted in a 30 ± 6% decrease in the survival, having an additive effect. The concentration of the GNPs and free drug used for this study was 0.3 and 435 nM, respectively. These concentrations are relatively lower and achievable in an in vivo setting. Hence, the results of our study would accelerate the incorporation of GNP-mediated chemoradiation into current cancer therapeutic protocols in the near future.
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Affiliation(s)
- Celina Yang
- Department of Biomedical Physics, Ryerson University, Toronto, ON M5B 2K3, Canada.
| | - Kyle Bromma
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada.
| | - Wonmo Sung
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA.
| | - Jan Schuemann
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA.
| | - Devika Chithrani
- Department of Biomedical Physics, Ryerson University, Toronto, ON M5B 2K3, Canada.
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada.
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12
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Yang C, Bromma K, Di Ciano-Oliveira C, Zafarana G, van Prooijen M, Chithrani DB. Gold nanoparticle mediated combined cancer therapy. Cancer Nanotechnol 2018. [DOI: 10.1186/s12645-018-0039-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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13
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Yang C, Bromma K, Chithrani D. Peptide Mediated In Vivo Tumor Targeting of Nanoparticles through Optimization in Single and Multilayer In Vitro Cell Models. Cancers (Basel) 2018; 10:cancers10030084. [PMID: 29558451 PMCID: PMC5876659 DOI: 10.3390/cancers10030084] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 03/15/2018] [Accepted: 03/16/2018] [Indexed: 12/26/2022] Open
Abstract
Optimizing the interface between nanoparticles (NPs) and the biological environment at various levels should be considered for improving delivery of NPs to the target tumor area. For NPs to be successfully delivered to cancer cells, NPs needs to be functionalized for circulation through the blood vessels. In this study, accumulation of Polyethylene Glycol (PEG) functionalized gold nanoparticles (GNPs) was first tested using in vitro monolayer cells and multilayer cell models prior to in vivo models. A diameter of 10 nm sized GNP was selected for this study for sufficient penetration through tumor tissue. The surfaces of the GNPs were modified with PEG molecules, to improve circulation time by reducing non-specific uptake by the reticuloendothelial system (RES) in animal models, and with a peptide containing integrin binding domain, RGD (arginyl-glycyl-aspartic acid), to improve internalization at the cellular level. A 10-12% accumulation of the injected GNP dose within the tumor was observed in vivo and the GNPs remained within the tumor tissue up to 72 h. This study suggests an in vitro platform for optimizing the accumulation of NP complexes in cells and tissue structures before testing them in animal models. Higher accumulation within the tumor in vivo upon surface modification is a promising outcome for future applications where GNPs can be used for drug delivery and radiation therapy.
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Affiliation(s)
- Celina Yang
- Department of Biomedical Physics, Ryerson University, Toronto, ON M5B 2K3, Canada.
| | - Kyle Bromma
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada.
| | - Devika Chithrani
- Department of Biomedical Physics, Ryerson University, Toronto, ON M5B 2K3, Canada.
- Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P 5C2, Canada.
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Eiben B, Fast M, Menten M, Bromma K, Wetscherek A, Hawkes D, McClelland J, Oelfke U. OC-0155: Automated lung tumour delineation in cine MR images for image guided radiotherapy with an MR-Linac. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)30598-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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