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Lin J, Wu Y, Liu G, Cui R, Xu Y. Advances of ultrasound in tumor immunotherapy. Int Immunopharmacol 2024; 134:112233. [PMID: 38735256 DOI: 10.1016/j.intimp.2024.112233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/11/2024] [Accepted: 05/07/2024] [Indexed: 05/14/2024]
Abstract
Immunotherapy has become a revolutionary method for treating tumors, offering new hope to cancer patients worldwide. Immunotherapy strategies such as checkpoint inhibitors, chimeric antigen receptor T-cell (CAR-T) therapy, and cancer vaccines have shown significant potential in clinical trials. Despite the promising results, there are still limitations that impede the overall effectiveness of immunotherapy; the response to immunotherapy is uneven, the response rate of patients is still low, and systemic immune toxicity accompanied with tumor cell immune evasion is common. Ultrasound technology has evolved rapidly in recent years and has become a significant player in tumor immunotherapy. The introductions of high intensity focused ultrasound and ultrasound-stimulated microbubbles have opened doors for new therapeutic strategies in the fight against tumor. This paper explores the revolutionary advancements of ultrasound combined with immunotherapy in this particular field.
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Affiliation(s)
- Jing Lin
- Department of Ultrasound, Guangdong Provincial Hospital of Chinese Medicine-Zhuhai Hospital, Zhuhai, PR China.
| | - Yuwei Wu
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Taipa, Macao, PR China
| | - Guangde Liu
- Department of Ultrasound, Guangdong Provincial Hospital of Chinese Medicine-Zhuhai Hospital, Zhuhai, PR China
| | - Rui Cui
- Department of Ultrasonography, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510000, PR China; Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510000, PR China
| | - Youhua Xu
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Taipa, Macao, PR China; Macau University of Science and Technology Zhuhai MUST Science and Technology Research Institute, Hengqin, Zhuhai, PR China.
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Zawada T, Bove T, Astafiev K, Ringgaard E, Lou-Moeller R. Lead-Free HIFU Transducers. ULTRASOUND IN MEDICINE & BIOLOGY 2022; 48:2530-2543. [PMID: 36180313 DOI: 10.1016/j.ultrasmedbio.2022.08.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/25/2022] [Accepted: 08/10/2022] [Indexed: 06/16/2023]
Abstract
High-intensity focused ultrasound transducers operating at 4 MHz based on lead-free piezoceramics from the sodium bismuth titanate (NBT) family are described. First, the piezoelectric material (Pz12X) is evaluated from the standpoint of transducer design and its important characteristics, including temperature dependance of several parameters such as dielectric and mechanical coefficients. Then, the performance of six transducers of the same design is evaluated in terms of electro-acoustic efficiency and its dependency on the operating acoustic power level up to 30 W. Overall, the initial electro-acoustic efficiency of three independent transducers is approximately 50% at low acoustic power levels and slightly drops down to 42% as the input electric power reaches 10 W. This process is stable and fully reversible. Moreover, the stability of electro-acoustic efficiency over extended power burst cycling is studied using another two transducers up to 95 × 103 power bursts of 250-ms duration and acoustic power of 10 W. This protocol is beyond the typical clinical use of similar devices in practice. No significant changes in electro-acoustic performance are noted. Additionally, the input electric power and the output acoustic power, together with the temperature of the piezoelectric component, are evaluated simultaneously over the period of one power burst. It is found that the maximum operating temperature over a high-input electric power burst of 600 J is below 60°C, which defines the operational limit for such devices, as the de-poling temperature of the lead-free material is around 85°C. It is found that the lead-free material from the NBT family is also a promising alternative to lead-based PZT-type materials in high-power therapeutic ultrasound.
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3
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Chen KW, Hsu PH, Huang HL, Liu HL, Lin YT, Hsu CY, Lin JH, Lin YH. Targeting nanoparticle-conjugated microbubbles combined with ultrasound-mediated microbubble destruction for enhanced tumor therapy. Pharmacol Res 2022; 186:106532. [DOI: 10.1016/j.phrs.2022.106532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 10/20/2022] [Accepted: 10/30/2022] [Indexed: 11/09/2022]
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Lin B, Du H, Fan J, Huang D, Gao F, Li J, Zhang Y, Feng G, Dai T, Du X. Radioimmunotherapy Combined With Low-Intensity Ultrasound and Microbubbles: A Potential Novel Strategy for Treatment of Solid Tumors. Front Oncol 2021; 11:750741. [PMID: 34745976 PMCID: PMC8570127 DOI: 10.3389/fonc.2021.750741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 10/06/2021] [Indexed: 11/17/2022] Open
Abstract
The prognosis of advanced malignant tumors is very poor, and effective treatment is limited. Radioimmunotherapy (RIT) is a novel treatment method. However, its anti-tumor effect is relatively low in solid tumors, which is mainly due to the blood-tumor barrier preventing RIT from penetrating the tumor, resulting in an insufficient dose. Low-intensity ultrasound with microbubbles (USMB) has proven capable of opening the blood-tumor barrier. The combination of the two technologies may overcome the poor anti-tumor effect of RIT and promote the clinical application of RIT in solid tumors. In this article, we reviewed the current research status of RIT in the treatment of solid tumors and the opportunities and challenges of USMB combined with RIT.
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Affiliation(s)
- Binwei Lin
- Department of Oncology, Nuclear Medicine Laboratory of Mianyang Central Hospital, Mianyang Central Hospital, Mianyang, China
| | - Huan Du
- Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
| | - Jinjia Fan
- Department of Oncology, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
| | - Dan Huang
- Radiology Department, Mianyang Central Hospital, Mianyang, China
| | - Feng Gao
- Department of Oncology, Nuclear Medicine Laboratory of Mianyang Central Hospital, Mianyang Central Hospital, Mianyang, China
| | - Jie Li
- Department of Oncology, Nuclear Medicine Laboratory of Mianyang Central Hospital, Mianyang Central Hospital, Mianyang, China
| | - Yu Zhang
- Department of Oncology, Nuclear Medicine Laboratory of Mianyang Central Hospital, Mianyang Central Hospital, Mianyang, China
| | - Gang Feng
- Department of Oncology, Nuclear Medicine Laboratory of Mianyang Central Hospital, Mianyang Central Hospital, Mianyang, China
| | - Tangzhi Dai
- Department of Oncology, Nuclear Medicine Laboratory of Mianyang Central Hospital, Mianyang Central Hospital, Mianyang, China
| | - Xiaobo Du
- Department of Oncology, Nuclear Medicine Laboratory of Mianyang Central Hospital, Mianyang Central Hospital, Mianyang, China
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Sun T, Dasgupta A, Zhao Z, Nurunnabi M, Mitragotri S. Physical triggering strategies for drug delivery. Adv Drug Deliv Rev 2020; 158:36-62. [PMID: 32589905 DOI: 10.1016/j.addr.2020.06.010] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/06/2020] [Accepted: 06/10/2020] [Indexed: 12/14/2022]
Abstract
Physically triggered systems hold promise for improving drug delivery by enhancing the controllability of drug accumulation and release, lowering non-specific toxicity, and facilitating clinical translation. Several external physical stimuli including ultrasound, light, electric fields and magnetic fields have been used to control drug delivery and they share some common features such as spatial targeting, spatiotemporal control, and minimal invasiveness. At the same time, they possess several distinctive features in terms of interactions with biological entities and/or the extent of stimulus response. Here, we review the key advances of such systems with a focus on discussing their physical mechanisms, the design rationales, and translational challenges.
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Affiliation(s)
- Tao Sun
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA; Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Anshuman Dasgupta
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany
| | - Zongmin Zhao
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Md Nurunnabi
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Texas at El Paso, TX 79902, USA
| | - Samir Mitragotri
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA.
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Stauffer PR, Rodrigues DB, Goldstein R, Nguyen T, Yu Y, Wan S, Woodward R, Gibbs M, Vasilchenko IL, Osintsev AM, Bar-Ad V, Leeper DB, Shi W, Judy KD, Hurwitz MD. Feasibility of removable balloon implant for simultaneous magnetic nanoparticle heating and HDR brachytherapy of brain tumor resection cavities. Int J Hyperthermia 2020; 37:1189-1201. [PMID: 33047639 PMCID: PMC7864554 DOI: 10.1080/02656736.2020.1829103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 09/03/2020] [Accepted: 09/20/2020] [Indexed: 10/23/2022] Open
Abstract
AIM Hyperthermia (HT) has been shown to improve clinical response to radiation therapy (RT) for cancer. Synergism is dramatically enhanced if HT and RT are combined simultaneously, but appropriate technology to apply treatments together does not exist. This study investigates the feasibility of delivering HT with RT to a 5-10mm annular rim of at-risk tissue around a tumor resection cavity using a temporary thermobrachytherapy (TBT) balloon implant. METHODS A balloon catheter was designed to deliver radiation from High Dose Rate (HDR) brachytherapy concurrent with HT delivered by filling the balloon with magnetic nanoparticles (MNP) and immersing it in a radiofrequency magnetic field. Temperature distributions in brain around the TBT balloon were simulated with temperature dependent brain blood perfusion using numerical modeling. A magnetic induction system was constructed and used to produce rapid heating (>0.2°C/s) of MNP-filled balloons in brain tissue-equivalent phantoms by absorbing 0.5 W/ml from a 5.7 kA/m field at 133 kHz. RESULTS Simulated treatment plans demonstrate the ability to heat at-risk tissue around a brain tumor resection cavity between 40-48°C for 2-5cm diameter balloons. Experimental thermal dosimetry verifies the expected rapid and spherically symmetric heating of brain phantom around the MNP-filled balloon at a magnetic field strength that has proven safe in previous clinical studies. CONCLUSIONS These preclinical results demonstrate the feasibility of using a TBT balloon to deliver heat simultaneously with HDR brachytherapy to tumor bed around a brain tumor resection cavity, with significantly improved uniformity of heating over previous multi-catheter interstitial approaches. Considered along with results of previous clinical thermobrachytherapy trials, this new capability is expected to improve both survival and quality of life in patients with glioblastoma multiforme.
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Affiliation(s)
- Paul R. Stauffer
- Thomas Jefferson University, Radiation Oncology Dept., Philadelphia PA
| | | | | | - Thinh Nguyen
- Thomas Jefferson University, Radiation Oncology Dept., Philadelphia PA
- Drexel University, Biomedical Engineering Dept., Philadelphia PA
| | - Yan Yu
- Thomas Jefferson University, Radiation Oncology Dept., Philadelphia PA
| | - Shuying Wan
- Thomas Jefferson University, Radiation Oncology Dept., Philadelphia PA
| | | | | | | | | | - Voichita Bar-Ad
- Thomas Jefferson University, Radiation Oncology Dept., Philadelphia PA
| | - Dennis B. Leeper
- Thomas Jefferson University, Radiation Oncology Dept., Philadelphia PA
| | - Wenyin Shi
- Thomas Jefferson University, Radiation Oncology Dept., Philadelphia PA
| | - Kevin D. Judy
- Thomas Jefferson University, Neurosurgery Department
| | - Mark D. Hurwitz
- Thomas Jefferson University, Radiation Oncology Dept., Philadelphia PA
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Bove T, Zawada T, Serup J, Jessen A, Poli M. High-frequency (20-MHz) high-intensity focused ultrasound (HIFU) system for dermal intervention: Preclinical evaluation in skin equivalents. Skin Res Technol 2019; 25:217-228. [PMID: 30620418 DOI: 10.1111/srt.12661] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 12/08/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND High-intensity focused ultrasound (HIFU) for non-invasive treatment of a range of internal pathologies including cancers of major organs and cerebral pathologies is in exponential growth. Systems, however, operate at relatively low frequencies, in the range of 200-2000 kHz as required for deep axial penetration of the body. HIFU utilizing frequencies in excess of 15 MHz has so far not been explored, but presents an opportunity to extend the HIFU modality to target specific dermal lesions and small animal research. MATERIALS AND METHODS A new 20-MHz HIFU system (TOOsonix ONE-R) with narrow focus corresponding to the dermis was studied in acoustic skin equivalents, for example, in a tissue-mimicking gel and in bovine liver. HIFU lesion geometry, depth, and diameter were determined. The temperature increase in the focal point was measured as a function of acoustic power and the duration of HIFU exposure. RESULTS The system produces highly reproducible ultrasound lesions with predictable and configurable depths of 1-2 mm, thus corresponding to the depth of the human dermis. The lesion geometry was elongated triangular and sized 0.1-0.5 mm, convergent to a focal point skin deep. Focal point temperature ranged between 40 and 90°C depending on the chosen setting. Observations were confirmed ex vivo in bovine liver and porcine muscle. Variation of acoustic power and duration of exposure produced linear effects in the range of the settings studied. Thus, effects could be adjusted within the temperature interval and spatial field relevant for clinical therapy and experimental intervention targeting the dermal layer of human skin. CONCLUSION The tested 20-MHz HIFU system for dermal applications fulfilled key prerequisite of narrow-field HIFU dedicated to cutaneous applications regarding reproducibility, geometry, and small size of the applied ultrasound lesions. Controlled adjustment of acoustic lesions within the temperature range 40-90°C qualifies the system for a range of non-ablative and ablative applications in dermatological therapy.
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Affiliation(s)
| | | | - Jørgen Serup
- Department of Dermatology, Bispebjerg University Hospital, Copenhagen, Denmark
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Li X, Wang W, Fan Y, Wei Y, Yu LQ, Wei JF, Wang YF. Anticancer efficiency of cycloartane triterpenoid derivatives isolated from Cimicifuga yunnanensis Hsiao on triple-negative breast cancer cells. Cancer Manag Res 2018; 10:6715-6729. [PMID: 30584366 PMCID: PMC6289211 DOI: 10.2147/cmar.s185387] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Background The roots and rhizomes of Cimicifuga yunnanensis Hsiao are commonly used as anti-inflammatory, antipyretic, and analgesic remedies and detoxification agents in traditional Chinese medicine (TCM). Although C. yunnanensis has been considered as supplementary medicine for several disorders, the antitumor effect of this herb and its key components has not been explored. Materials and methods The rhizomes of C. yunnanensis were isolated by chromatographic techniques. Structures of isolated compounds were identified based on spectroscopic methods and comparison with published data. The in vitro anticancer activities of purified components were also performed by MTT experiments. The in vivo anticancer activities were examined by subcutaneous tumor model or a breast cancer liver metastasis model. Results In this study, we aimed to identify and characterize the effective antitumor components from the rhizomes of C. yunnanensis. By bioassay-guided fractionation techniques and chemical characterization, 12 cycloartane triterpenes and four chromones were isolated, among them, 11 compounds were identified in this genus at first. The identified two compounds showed dramatic inhibitory activities against breast cancer cells: compound 4 (23-epi-26-deoxyactein) and compound 13 (cimigenol). Then, we examined the antitumor effect of these two selective candidate chemicals on triple-negative breast cancer (TNBC) cells in vivo and found that they could reduce tumor growth in subcutaneous tumor model or breast cancer liver metastasis model. Conclusion These results suggested that the selective compounds isolated from C. yunnanensis Hsiao could be the promising new agents for TNBC treatment.
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Affiliation(s)
- Xiao Li
- Biotechnology Developing Center of Henan Academy of Sciences, Henan Academy of Sciences, Zhengzhou 450002, Henan, People's Republic of China.,State Key Laboratory of Photochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China,
| | - Wei Wang
- Biotechnology Developing Center of Henan Academy of Sciences, Henan Academy of Sciences, Zhengzhou 450002, Henan, People's Republic of China
| | - Yi Fan
- Biotechnology Developing Center of Henan Academy of Sciences, Henan Academy of Sciences, Zhengzhou 450002, Henan, People's Republic of China
| | - Yue Wei
- Biotechnology Developing Center of Henan Academy of Sciences, Henan Academy of Sciences, Zhengzhou 450002, Henan, People's Republic of China
| | - Li-Qin Yu
- Biotechnology Developing Center of Henan Academy of Sciences, Henan Academy of Sciences, Zhengzhou 450002, Henan, People's Republic of China
| | - Ji-Fu Wei
- Research Division of Clinical Pharmacology, The First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, People's Republic of China,
| | - Yi-Fen Wang
- State Key Laboratory of Photochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China,
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Meng D, Lei M, Han Y, Zhao D, Zhang X, Yang Y, Liu R. MicroRNA-645 targets urokinase plasminogen activator and decreases the invasive growth of MDA-MB-231 triple-negative breast cancer cells. Onco Targets Ther 2018; 11:7733-7743. [PMID: 30464522 PMCID: PMC6223385 DOI: 10.2147/ott.s187221] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background Urokinase plasminogen activator (uPA) promotes the in vivo invasive growth of HCC cells by cleaving and activating matrix metalloproteinases (MMPs) to induce the destruction of the extracellular matrix of triple-negative breast cancer (TNBC) cells. The identification of microRNAs that target uPA and decrease uPA expression would be useful for attenuating the in vivo invasive growth of TNBC cells. Materials and methods MicroRNA-645 (miR-645) was identified using an online tool (miRDB) as potentially targeting uPA; miR-645 inhibition of uPA was confirmed by western blot experiments. The effects of miR-645 on the in vivo invasive growth of TNBC cells were examined using an intrahepatic tumor model in nude mice, and the miR-645 mechanism of action was explored with MMP cleaving experiments. Results Through virtual screening, we discovered that miR-645 potentially targeted the uPA 3′ untranslated region. This targeting was confirmed by western blot experiments and miR-645 lentiviral particle (LV-645) transduction that inhibited uPA expression in MDA-MB-231 TNBC cells. The LV-645 inhibition of uPA led to the decreased invasive growth of TNBC cells in nude mice. The mechanism data indicated that the uPA inhibition resulted in a decreased cleaving of the pro-MMP-9 protein. Conclusion Targeting uPA with miR-645 decreased the in vivo invasive growth of TNBC cells. These results suggest that miR-645 may represent a promising treatment strategy for TNBC.
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Affiliation(s)
- Du Meng
- Department of Radio Oncology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, Shaanxi Province, People's Republic of China,
| | - Ming Lei
- Department of Cardiothoracic Surgery, The NO 3 Hospital of Xi'an, Xi'an 710000, Shaanxi Province, People's Republic of China
| | - Yaxuan Han
- Department of Oncology, The Xi'an Chest Hospital, Xi'an 710000, Shaanxi Province, People's Republic of China
| | - Dongli Zhao
- Department of Cardiothoracic Surgery, The NO 3 Hospital of Xi'an, Xi'an 710000, Shaanxi Province, People's Republic of China
| | - Xiaozhi Zhang
- Department of Radio Oncology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, Shaanxi Province, People's Republic of China,
| | - Yunyi Yang
- Department of Radio Oncology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, Shaanxi Province, People's Republic of China,
| | - Rui Liu
- Department of Radio Oncology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an 710061, Shaanxi Province, People's Republic of China,
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Tu J, Zhang H, Yu J, Liufu C, Chen Z. Ultrasound-mediated microbubble destruction: a new method in cancer immunotherapy. Onco Targets Ther 2018; 11:5763-5775. [PMID: 30254469 PMCID: PMC6140758 DOI: 10.2147/ott.s171019] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Immunotherapy provides a new treatment option for cancer. However, it may be therapeutically insufficient if only using the self-immune system alone to attack the tumor without any aiding methods. To overcome this drawback and improve the efficiency of therapy, new treatment methods are emerging. In recent years, ultrasound-mediated microbubble destruction (UMMD) has shown great potential in cancer immunotherapy. Using the combination of ultrasound and targeted microbubbles, molecules such as antigens or genes encoding antigens can be efficiently and specifically delivered into the tumor tissue. This review focuses on the recent progress in the application of UMMD in cancer immunotherapy.
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Affiliation(s)
- Jiawei Tu
- Department of Ultrasound Medicine, Laboratory of Ultrasound Molecular Imaging, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, People's Republic of China,
| | - Hui Zhang
- Department of Ultrasound Medicine, Laboratory of Ultrasound Molecular Imaging, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, People's Republic of China,
| | - Jinsui Yu
- Department of Ultrasound Medicine, Laboratory of Ultrasound Molecular Imaging, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, People's Republic of China,
| | - Chun Liufu
- Department of Ultrasound Medicine, Laboratory of Ultrasound Molecular Imaging, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, People's Republic of China,
| | - Zhiyi Chen
- Department of Ultrasound Medicine, Laboratory of Ultrasound Molecular Imaging, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, People's Republic of China,
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Meng Y, Suppiah S, Surendrakumar S, Bigioni L, Lipsman N. Low-Intensity MR-Guided Focused Ultrasound Mediated Disruption of the Blood-Brain Barrier for Intracranial Metastatic Diseases. Front Oncol 2018; 8:338. [PMID: 30211117 PMCID: PMC6121246 DOI: 10.3389/fonc.2018.00338] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Accepted: 08/03/2018] [Indexed: 12/19/2022] Open
Abstract
Low-intensity MR-guided focused ultrasound in combination with intravenously injected microbubbles is a promising platform for drug delivery to the central nervous system past the blood-brain barrier. The blood-brain barrier is a key bottleneck for cancer therapeutics via limited inter- and intracellular transport. Further, drugs that cross the blood-brain barrier when delivered in a spatially nonspecific way, result in adverse effects on normal brain tissue, or at high concentrations, result in increasing risks to peripheral organs. As such, various anti-cancer drugs that have been developed or to be developed in the future would benefit from a noninvasive, temporary, and repeatable method of targeted opening of the blood-brain barrier to treat metastatic brain diseases. MR-guided focused ultrasound is a potential solution to these design requirements. The safety, feasibility and preliminary efficacy of MRgFUS aided delivery have been demonstrated in various animal models. In this review, we discuss this preclinical evidence, mechanisms of focused ultrasound mediated blood-brain barrier opening, and translational efforts to neuro-oncology patients.
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Affiliation(s)
- Ying Meng
- Division of Neurosurgery, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.,Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Suganth Suppiah
- Division of Neurosurgery, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Shanan Surendrakumar
- Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Luca Bigioni
- Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Nir Lipsman
- Division of Neurosurgery, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.,Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Toronto, ON, Canada
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12
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Combining CXCR4-targeted and nontargeted nanoparticles for effective unassisted in vitro magnetic hyperthermia. Biointerphases 2018; 13:011005. [PMID: 29402091 DOI: 10.1116/1.5009989] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The use of targeted nanoparticles for magnetic hyperthermia (MHT) increases MHT selectivity, but often at the expense of its effectiveness. Consequently, targeted MHT is typically used in combination with other treatment modalities. This work describes an implementation of a highly effective monotherapeutic in vitro MHT treatment based on two populations of magnetic particles. Cells were sequentially incubated with two populations of magnetic particles: nonfunctionalized superparamagnetic nanoparticles and anti-CXCR4-functionalized particles. After removing the excess of free particles, an alternating magnetic field (AMF) was applied to produce MHT. The induced cytotoxicity was assessed at different time-points after AMF application. Complete loss of cell viability was observed 72 h after MHT when the iron loading of the anti-CXCR4-functionalized particles was boosted by that of a nontargeted population. Additionally, induction of necrosis resulted in more efficient cell death than did induction of apoptosis. Achieving a uniquely high effectiveness in monotherapeutic MHT demonstrates the potential of this approach to achieve complete loss of viability of cancer cells while avoiding the side effects of dual-treatment strategies that use MHT only as a sensitizing therapy.
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Malik P, Phipps C, Edginton A, Blay J. Pharmacokinetic Considerations for Antibody-Drug Conjugates against Cancer. Pharm Res 2017; 34:2579-2595. [PMID: 28924691 DOI: 10.1007/s11095-017-2259-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 09/09/2017] [Indexed: 12/26/2022]
Abstract
Antibody-drug conjugates (ADCs) are ushering in the next era of targeted therapy against cancer. An ADC for cancer therapy consists of a potent cytotoxic payload that is attached to a tumour-targeted antibody by a chemical linker, usually with an average drug-to-antibody ratio (DAR) of 3.5-4. The theory is to deliver potent cytotoxic payloads directly to tumour cells while sparing healthy cells. However, practical application has proven to be more difficult. At present there are only two ADCs approved for clinical use. Nevertheless, in the last decade there has been an explosion of options for ADC engineering to optimize target selection, Fc receptor interactions, linker, payload and more. Evaluation of these strategies requires an understanding of the mechanistic underpinnings of ADC pharmacokinetics. Development of ADCs for use in cancer further requires an understanding of tumour properties and kinetics within the tumour environment, and how the presence of cancer as a disease will impact distribution and elimination. Key pharmacokinetic considerations for the successful design and clinical application of ADCs in oncology are explored in this review, with a focus on the mechanistic determinants of distribution and elimination.
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Affiliation(s)
- Paul Malik
- School of Pharmacy, University of Waterloo, 10A Victoria St South, Kitchener, Ontario, N2G 1C5, Canada
| | - Colin Phipps
- School of Pharmacy, University of Waterloo, 10A Victoria St South, Kitchener, Ontario, N2G 1C5, Canada.,DMPK & Translational Modeling, Abbvie Inc., North Chicago, Illinois, 60064, USA
| | - Andrea Edginton
- School of Pharmacy, University of Waterloo, 10A Victoria St South, Kitchener, Ontario, N2G 1C5, Canada.
| | - Jonathan Blay
- School of Pharmacy, University of Waterloo, 10A Victoria St South, Kitchener, Ontario, N2G 1C5, Canada
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