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McKaig T, Logan K, Nesbitt H, Callan B, McKeown S, O'Sullivan JM, Kelly P, O'Rourke D, McHale AP, Callan JF. Ultrasound targeted microbubble destruction using docetaxel and Rose Bengal loaded Microbubbles for targeted Chemo-Sonodynamic therapy treatment of prostate cancer. Eur J Pharm Biopharm 2023; 192:196-205. [PMID: 37858804 DOI: 10.1016/j.ejpb.2023.10.012] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/05/2023] [Accepted: 10/16/2023] [Indexed: 10/21/2023]
Abstract
Docetaxel (DTX) chemotherapy is commonly used in the treatment of patients with advanced prostate cancer demonstrating modest improvements in survival. As these patients are often elderly and the chemotherapy treatment is not targeted, it is often poorly tolerated. More targeted approaches that increase therapeutic efficacy yet reduce the amount of toxic chemotherapy administered are needed. In this manuscript, we investigate the potential of ultrasound targeted microbubble destruction (UTMD) to deliver a combination of docetaxel chemotherapy and Rose Bengal mediated sonodynamic therapy (SDT) in pre-clinical prostate cancer models. A Rose Bengal modified phospholipid was synthesized and used as a component lipid to prepare a microbubble (MB) formulation that was also loaded with DTX. The DTX-MB-RB formulation was used in the UTMD mediated treatment of androgen sensitive and androgen resistant 3D spheroid and murine models of prostate cancer. Results from the 3D spheroid experiments showed UTMD mediated DTX-MB-RB chemo-sonodynamic therapy to be significantly more effective at reducing cell viability than UTMD mediated DTX or SDT treatment alone. In an androgen sensitive murine model of prostate cancer, UTMD mediated DTX-MB-RB chemo-sonodynamic therapy was as effective as androgen deprivation therapy (ADT) at controlling tumour growth. However, when both treatments were combined, a significant improvement in tumour growth delay was observed. In an androgen resistant murine model, UTMD mediated DTX-MB-RB chemo-sonodynamic therapy was significantly more effective than standard DTX monotherapy. Indeed, the DTX dose administered using the DTX-MB-RB formulation was 91% less than standard DTX monotherapy. As a result, UTMD mediated DTX-MB-RB treatment was well tolerated while animals treated with DTX monotherapy displayed significant weight loss which was attributed to acute toxic effects. These results highlight the potential of UTMD mediated DTX-MB-RB chemo-sonodynamic therapy as a targeted, well tolerated alternative treatment for advanced prostate cancer.
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Affiliation(s)
- Thomas McKaig
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK
| | - Keiran Logan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK
| | - Heather Nesbitt
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK
| | - Bridgeen Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK
| | - Stephanie McKeown
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK
| | - Joe M O'Sullivan
- Patrick G. Johnston Centre for Cancer Research , Queens University of Belfast, Belfast Northern Ireland, BT9 7AE, UK
| | - Paul Kelly
- Department of Pathology, Belfast Health and Social Care Trust, Belfast, Northern Ireland, UK
| | - Declan O'Rourke
- Department of Pathology, Belfast Health and Social Care Trust, Belfast, Northern Ireland, UK
| | - Anthony P McHale
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK
| | - John F Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK.
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Hadi MM, Farrell S, Nesbitt H, Thomas K, Kubajewska I, Ng A, Masood H, Patel S, Sciscione F, Davidson B, Callan JF, MacRobert AJ, McHale AP, Nomikou N. Correction to: Nanotechnology-augmented sonodynamic therapy and associated immune-mediated effects for the treatment of pancreatic ductal adenocarcinoma. J Cancer Res Clin Oncol 2023; 149:8165-8166. [PMID: 36947238 PMCID: PMC10374475 DOI: 10.1007/s00432-023-04648-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Affiliation(s)
- Marym Mohammad Hadi
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - Sian Farrell
- Biomedical Sciences Research Institute, Ulster University, Coleraine, UK
| | - Heather Nesbitt
- Biomedical Sciences Research Institute, Ulster University, Coleraine, UK
| | - Keith Thomas
- Biomedical Sciences Research Institute, Ulster University, Coleraine, UK
| | - Ilona Kubajewska
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
- Nanomerics Ltd, London, UK
| | - Alex Ng
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - Hamzah Masood
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - Shiv Patel
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - Fabiola Sciscione
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - Brian Davidson
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - John F Callan
- Biomedical Sciences Research Institute, Ulster University, Coleraine, UK
| | - Alexander J MacRobert
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - Anthony P McHale
- Biomedical Sciences Research Institute, Ulster University, Coleraine, UK
| | - Nikolitsa Nomikou
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK.
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Hadi MM, Farrell S, Nesbitt H, Thomas K, Kubajewska I, Ng A, Masood H, Patel S, Sciscione F, Davidson B, Callan JF, MacRobert AJ, McHale AP, Nomikou N. Nanotechnology-augmented sonodynamic therapy and associated immune-mediated effects for the treatment of pancreatic ductal adenocarcinoma. J Cancer Res Clin Oncol 2022:10.1007/s00432-022-04418-y. [PMID: 36319895 PMCID: PMC10349707 DOI: 10.1007/s00432-022-04418-y] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 10/12/2022] [Indexed: 03/23/2023]
Abstract
PURPOSE Sonodynamic therapy (SDT) is emerging as a cancer treatment alternative with significant advantages over conventional therapies, including its minimally invasive and site-specific nature, its radical antitumour efficacy with minimal side effects, and its capacity to raise an antitumour immune response. The study explores the efficacy of SDT in combination with nanotechnology against pancreatic ductal adenocarcinoma. METHODS A nanoparticulate formulation (HPNP) based on a cathepsin B-degradable glutamate-tyrosine co-polymer that carries hematoporphyrin was used in this study for the SDT-based treatment of PDAC. Cathepsin B levels in BxPC-3 and PANC-1 cells were correlated to cellular uptake of HPNP. The HPNP efficiency to induce a sonodynamic effect at varying ultrasound parameters, and at different oxygenation and pH conditions, was investigated. The biodistribution, tumour accumulation profile, and antitumour efficacy of HPNP in SDT were examined in immunocompetent mice carrying bilateral ectopic murine pancreatic tumours. The immune response profile of excised tumour tissues was also examined. RESULTS The HPNP formulation significantly improved cellular uptake of hematoporphyrin for both BxPC-3 and PANC-1 cells, while increase of cellular uptake was positively correlated in PANC-1 cells. There was a clear SDT-induced cytotoxicity at the ultrasound conditions tested, and the treatment impaired the capacity of both BxPC-3 and PANC-1 cells to form colonies. The overall acoustic energy and pulse length, rather than the power density, were key in eliciting the effects observed in vitro. The SDT treatment in combination with HPNP resulted in 21% and 27% reduction of the target and off-target tumour volumes, respectively, within 24 h. A single SDT treatment elicited an antitumour effect that was characterized by an SDT-induced decrease in immunosuppressive T cell phenotypes. CONCLUSION SDT has significant potential to serve as a monotherapy or adjunctive treatment for inoperable or borderline resectable PDAC.
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Affiliation(s)
- Marym Mohammad Hadi
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - Sian Farrell
- Biomedical Sciences Research Institute, Ulster University, Coleraine, UK
| | - Heather Nesbitt
- Biomedical Sciences Research Institute, Ulster University, Coleraine, UK
| | - Keith Thomas
- Biomedical Sciences Research Institute, Ulster University, Coleraine, UK
| | - Ilona Kubajewska
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
- Nanomerics Ltd, London, UK
| | - Alex Ng
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - Hamzah Masood
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - Shiv Patel
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - Fabiola Sciscione
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - Brian Davidson
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - John F Callan
- Biomedical Sciences Research Institute, Ulster University, Coleraine, UK
| | - Alexander J MacRobert
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - Anthony P McHale
- Biomedical Sciences Research Institute, Ulster University, Coleraine, UK
| | - Nikolitsa Nomikou
- Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK.
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Farrell S, Nesbitt H, Mairs L, Nomikou N, Callan B, Callan JF, McHale AP. O-P03 A composite polymeric nanoparticle as a sensitiser for sonodynamic therapy (SDT)-based treatment of pancreatic cancer. Br J Surg 2021. [DOI: 10.1093/bjs/znab429.044] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Background
Pancreatic cancer remains one of the most recalcitrant forms of cancer with poor prognosis and limited treatment options. SDT is a novel, targeted approach to the treatment of solid tumours. Based on the generation of cytotoxic reactive oxygen species (ROS) following the exposure of a sonosensitiser to ultrasound, the approach is designed to extracorporeally target less accessible lesions. Here we describe the production of a poly(lactic-co-glycolic acid) (PLGA), polyethyleneimine (PEI), Rose Bengal (RB) and indocyanine green (ICG) containing composite nanoparticles and describe their use in SDT-mediated treatment of pancreatic cancer using both in vitro and in vivo target models.
Methods
Nanoparticles were prepared using an oil in water emulsion and solvent diffusion-based approach. These were designated RB-ICGNP. In vitro SDT treatment consisted of exposing BxPC3 (human PDAC cells), T110029 (murine PDAC cells) or hPSC (immortalised human pancreatic stellate cells) to RB-ICGNP and subsequently treating with ultrasound for 30 s at a frequency of 1 MHz, a power density of 3.0 W/cm2 (SATP) using a duty cycle of 50% at a pulse repetition frequency of 100 Hz. For in vivo studies, BxPC3 (xenograft) and T110029 (syngeneic) tumours were treated with a power density of 3.5 W/cm2 ultrasound for 3.5 min.
Results
Conclusions
Using in vitro and in vivo (human xenograft and murine syngeneic) models of pancreatic cancer, RB-ICGNP composite nanoparticles may be employed as a sensitiser for SDT-based treatment of pancreatic cancer. Since pancreatic stellate cells were more sensitive to SDT, the latter may have an impact on tumour stroma. Staining of residual tumour tissues from SDT-treated animals for connective tissue (stroma) confirmed the latter. Since tumour stroma presents a significant challenge to treatment of pancreatic cancer and represents a negative prognostic marker, the impact delivered by SDT may be exploited to potentiate alternative therapeutic approaches.
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Affiliation(s)
- Sian Farrell
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Heather Nesbitt
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Laura Mairs
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Nikolitsa Nomikou
- Department of Surgical Biotechnology, Division of Surgery and Interventional Science, University College London, Royal Free Hospital, London, United Kingdom
| | - Bridgeen Callan
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - John F. Callan
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Anthony P. McHale
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
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5
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Farrell S, Nicholas D, Nesbitt H, Logan K, McMullin E, Gillan T, Kelly P, O'Rourke D, Porter S, Thomas K, O'Hagan BM, Nomikou N, Callan B, Callan JF, McHale AP. P-P11 A tumour responsive, oxygen-generating nanoparticle to combat hypoxia in pancreatic tumours. Br J Surg 2021. [DOI: 10.1093/bjs/znab430.235] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Background
Pancreatic cancer remains a significant therapeutic challenge and its poor prognosis has remained relatively unchanged for the past 40 years. Pancreatic tumours are highly desmoplastic and impenetrable lesions in which both gas and mass transfer is severely compromised. This leads to the development of hypoxia within the tumour and this compromises therapeutic approaches that rely on cytotoxic reactive oxygen species, e.g. photodynamic therapy, sonodynamic therapy and radiotherapy. Hypoxia also results in a relatively low pH within the tumour microenvironment. Here we describe a pH sensitive nanoparticle that can generate oxygen in the tumour and enhance ROS generating therapeutic approaches.
Methods
CaO2 NPs were generated by exposing to low frequency ultrasound and subsequently coated using a polymethacrylate polymer that becomes soluble at pH 6.4. For some studies, the sonosensitiser, Rose Bengal was attached to the particles. Oxygen generation in tumours (BxPC3) was demonstrated by inserting a dissolved oxygen probe into tumours following IV administration of particles. Particles were also employed together with photodynamic therapy (PDT) and sonodynamic therapy (SDT) using human xenograft and syngeneic pancreatic tumour models. In some cases, tumour tissues were recovered and analysed for tumour infiltrating immune cells using flow cytometry.
Results
Conclusions
Coating CaO2 nanoparticles with a pH sensitive polymer provides in situ oxygen generation in tumours. Transient provision of oxygen enhances therapies that depend on the generation of cytotoxic reactive oxygen species. When used with SDT, and using a bilateral syngeneic pancreatic tumour model, a powerful abscopal effect was observed and this was shown to be immune-mediated. The above data suggest that the particles may be exploited to enhance other therapies that depend on the generation of ROS, e.g. radiotherapy, and further suggest that the approach can be used to treat either local or disseminated forms of pancreatic cancer.
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Affiliation(s)
- Sian Farrell
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Dean Nicholas
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Heather Nesbitt
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Keiran Logan
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Eva McMullin
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Tierna Gillan
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Paul Kelly
- Department of Cellular Pathology, Royal Victoria Hospital, Belfast Health and Social Care Trust, Grosvenor Road, Belfast, United Kingdom
| | - Declan O'Rourke
- Department of Cellular Pathology, Royal Victoria Hospital, Belfast Health and Social Care Trust, Grosvenor Road, Belfast, United Kingdom
| | - Simon Porter
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Keith Thomas
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Barry M.G. O'Hagan
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Nikolitsa Nomikou
- Department of Surgical Biotechnology, Division of Surgery and Interventional Science, University College London, Royal Free Hospital, London, United Kingdom
| | - Bridgeen Callan
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - John F. Callan
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
| | - Anthony P. McHale
- School of Pharmacy and Pharmaceutical Sciences, Ulster University, Coleraine, United Kingdom
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6
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Gao J, Logan KA, Nesbitt H, Callan B, McKaig T, Taylor M, Love M, McHale AP, Griffith DM, Callan JF. A single microbubble formulation carrying 5-fluorouridine, Irinotecan and oxaliplatin to enable FOLFIRINOX treatment of pancreatic and colon cancer using ultrasound targeted microbubble destruction. J Control Release 2021; 338:358-366. [PMID: 34481018 DOI: 10.1016/j.jconrel.2021.08.050] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 08/23/2021] [Accepted: 08/30/2021] [Indexed: 01/05/2023]
Abstract
FOLFIRINOX and FOLFOXIRI are combination chemotherapy treatments that incorporate the same drug cocktail (folinic acid, 5-fluorouracil, oxaliplatin and irinotecan) but exploit an altered dosing regimen when used in the management of pancreatic and colorectal cancer, respectively. Both have proven effective in extending life when used to treat patients with metastatic disease but are accompanied by significant adverse effects. To facilitate improved tumour-targeting of this drug combination, an ultrasound responsive microbubble formulation loaded with 5-fluorouridine, irinotecan and oxaliplatin (FIRINOX MB) was developed and its efficacy tested, together with the non-toxic folinic acid, in preclinical murine models of pancreatic and colorectal cancer. A significant improvement in tumour growth delay was observed in both models following ultrasound targeted microbubble destruction (UTMD) mediated FIRINOX treatment with pancreatic tumours 189% and colorectal tumours 82% smaller at the conclusion of the study when compared to animals treated with a standard dose of FOLFIRINOX. Survival prospects were also improved for animals in the UTMD mediated FIRINOX treatment group with an average survival of 22.17 ± 12.19 days (pancreatic) and 44.40 ± 3.85 days (colorectal) compared to standard FOLFIRINOX treatment (15.83 ± 4.17 days(pancreatic) and 37.50 ± 7.72 days (colon)). Notably, this improved efficacy was achieved using FIRINOX MB that contained 5-fluorouricil, irinotecan and oxaliplatin loadings that were 13.44-fold, 9.19-fold and 1.53-fold lower than used for the standard FOLFIRINOX treatment. These results suggest that UTMD enhances delivery of FIRINOX chemotherapy, making it significantly more effective at a substantially lower dose. In addition, the reduced systemic levels of 5-fluorouracil, irinotecan and oxaliplatin should also make the treatment more tolerable and reduce the adverse effects often associated with this treatment.
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Affiliation(s)
- Jinhui Gao
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT14 6AB, UK
| | - Keiran A Logan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT14 6AB, UK
| | - Heather Nesbitt
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT14 6AB, UK
| | - Bridgeen Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT14 6AB, UK
| | - Thomas McKaig
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT14 6AB, UK
| | - Mark Taylor
- Department of HPB Surgery, Mater Hospital, Belfast, Northern Ireland, UK
| | - Mark Love
- Imaging Centre, The Royal Victoria Hospital, Grosvenor Road, Belfast, Northern Ireland BT12 6BA, UK
| | - Anthony P McHale
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT14 6AB, UK.
| | - Darren M Griffith
- Department of Chemistry, RCSI, 123 St Stephens Green, Dublin 2, Ireland; SSPC, Synthesis and Solid State Pharmaceutical Centre, Ireland.
| | - John F Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT14 6AB, UK.
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Browning RJ, Able S, Ruan JL, Bau L, Allen PD, Kersemans V, Wallington S, Kinchesh P, Smart S, Kartsonaki C, Kamila S, Logan K, Taylor MA, McHale AP, Callan JF, Stride E, Vallis KA. Combining sonodynamic therapy with chemoradiation for the treatment of pancreatic cancer. J Control Release 2021; 337:371-377. [PMID: 34274382 DOI: 10.1016/j.jconrel.2021.07.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 07/10/2021] [Accepted: 07/13/2021] [Indexed: 12/26/2022]
Abstract
Treatment options for patients with pancreatic cancer are limited and survival prospects have barely changed over the past 4 decades. Chemoradiation treatment (CRT) has been used as neoadjuvant therapy in patients with borderline resectable disease to reduce tumour burden and increase the proportion of patients eligible for surgery. Antimetabolite drugs such as gemcitabine and 5-fluorouracil are known to sensitise pancreatic tumours to radiation treatment. Likewise, photodynamic therapy (PDT) has also been shown to enhance the effect of radiation therapy. However, PDT is limited to treating superficial lesions due to the attenuation of light by tissue. The ability of the related technique, sonodynamic therapy (SDT), to enhance CRT was investigated in two murine models of pancreatic cancer (PSN-1 and BxPC-3) in this study. SDT uses low intensity ultrasound to activate an otherwise non-toxic sensitiser, generating toxic levels of reactive oxygen species (ROS) locally. It is applicable to greater target depths than PDT due to the ability of ultrasound to propagate further than light in tissue. Both CRT and the combination of CRT plus SDT delayed tumour growth in the two tumour models. In the PSN-1 model, but not the BxPC-3 model, the combination treatment caused an increase in survival relative to CRT alone (p = 0.038). The improvement in survival conferred by the addition of SDT in this model may be related to differences in tumour architecture between the two models. MRI and US images showed that PSN-1 tumours were less well perfused and vascularised than BxPC-3 tumours. This poor vascularisation may explain why PSN-1 tumours were more susceptible to the effects of vascular damage exerted by SDT treatment.
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Affiliation(s)
- Richard J Browning
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford OX3 7DQ, UK
| | - Sarah Able
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford OX3 7DQ, UK
| | - Jia-Ling Ruan
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford OX3 7DQ, UK
| | - Luca Bau
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford OX3 7DQ, UK
| | - Philip D Allen
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford OX3 7DQ, UK
| | - Veerle Kersemans
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford OX3 7DQ, UK
| | - Sheena Wallington
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford OX3 7DQ, UK
| | - Paul Kinchesh
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford OX3 7DQ, UK
| | - Sean Smart
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford OX3 7DQ, UK
| | - Christiana Kartsonaki
- MRC Population Health Research Unit, Clinical Trials Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford OX3 7DQ, UK
| | - Sukanta Kamila
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Keiran Logan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Mark A Taylor
- Department of HPB Surgery, Mater Hospital, Belfast, Northern Ireland BT14 6AB, UK
| | - Anthony P McHale
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - John F Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Eleanor Stride
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford OX3 7DQ, UK
| | - Katherine A Vallis
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford OX3 7DQ, UK.
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Owen J, Logan K, Nesbitt H, Able S, Vasilyeva A, Bluemke E, Kersemans V, Smart S, Vallis KA, McHale AP, Callan JF, Stride E. Orally administered oxygen nanobubbles enhance tumor response to sonodynamic therapy. Nano Select 2021. [DOI: 10.1002/nano.202100038] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Joshua Owen
- Institute of Biomedical Engineering University of Oxford Oxford UK
| | - Keiran Logan
- Biomedical Sciences Research Institute Ulster University Coleraine Northern Ireland UK
| | - Heather Nesbitt
- Biomedical Sciences Research Institute Ulster University Coleraine Northern Ireland UK
| | - Sarah Able
- Oxford Institute for Radiation Oncology University of Oxford Oxford UK
| | | | - Emma Bluemke
- Institute of Biomedical Engineering University of Oxford Oxford UK
| | - Veerle Kersemans
- Oxford Institute for Radiation Oncology University of Oxford Oxford UK
| | - Sean Smart
- Oxford Institute for Radiation Oncology University of Oxford Oxford UK
| | | | - Anthony P. McHale
- Biomedical Sciences Research Institute Ulster University Coleraine Northern Ireland UK
| | - John F. Callan
- Biomedical Sciences Research Institute Ulster University Coleraine Northern Ireland UK
| | - Eleanor Stride
- Institute of Biomedical Engineering University of Oxford Oxford UK
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9
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Nesbitt H, Logan K, Thomas K, Callan B, Gao J, McKaig T, Taylor M, Love M, Stride E, McHale AP, Callan JF. Sonodynamic therapy complements PD-L1 immune checkpoint inhibition in a murine model of pancreatic cancer. Cancer Lett 2021; 517:88-95. [PMID: 34119606 DOI: 10.1016/j.canlet.2021.06.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 06/03/2021] [Accepted: 06/07/2021] [Indexed: 02/07/2023]
Abstract
The emergence of immune checkpoint inhibitors (ICI's) in the past decade has proven transformative in the area of immuno-oncology. The PD-1/PD-L1 axis has been particularly well studied and monoclonal antibodies developed to block either the receptor (anti PD-1) or its associated ligand (anti PD-L1) can generate potent anti-tumour immunity in certain tumour models. However, many "immune cold" tumours remain unresponsive to ICI's and strategies to stimulate the adaptive immune system and make these tumours more susceptible to ICI treatment are currently under investigation. Sonodynamic therapy (SDT) is a targeted anti-cancer treatment that uses ultrasound to activate a sensitiser with the resulting generation of reactive oxygen species (ROS) causing direct cell death by apoptosis and necrosis. SDT has also been shown to stimulate the adaptive immune system in a pre-clinical model of colorectal cancer. In this manuscript, we investigate the ability of microbubble mediated SDT to control tumour growth in a bilateral tumour mouse model of pancreatic cancer by treating the target tumour with SDT and observing the effects at the off-target untreated tumour. The results demonstrated a significant 287% decrease in tumour volume when compared to untreated animals 11 days following the initial treatment with SDT, which reduced further to 369% when SDT was combined with anti-PD-L1 ICI treatment. Analysis of residual tumour tissues remaining after treatment revealed increased levels of infiltrating CD4+ and CD8+ T-lymphocytes (respectively 4.65 and 3.16-fold more) in the off-target tumours of animals where the target tumour was treated with SDT and anti-PD-L1, when compared to untreated tumours. These results suggest that SDT treatment elicits an adaptive immune response that is potentiated by the anti-PD-L1 ICI in this particular model of pancreatic cancer.
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Affiliation(s)
- Heather Nesbitt
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK
| | - Keiran Logan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK
| | - Keith Thomas
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK
| | - Bridgeen Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK
| | - Jinhui Gao
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK
| | - Thomas McKaig
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK
| | - Mark Taylor
- Department of HPB Surgery, Mater Hospital, Belfast, Northern Ireland, BT14 6AB, UK
| | - Mark Love
- Imaging Centre, The Royal Victoria Hospital, Grosvenor Road, Belfast, Northern Ireland, BT12 6BA, UK
| | - Eleanor Stride
- Institute of Biomedical Engineering, University of Oxford, Oxford, OX3 7DQ, UK
| | - Anthony P McHale
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK
| | - John F Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, UK.
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10
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Nicholas D, Nesbitt H, Farrell S, Logan K, McMullin E, Gillan T, Kelly P, O'Rourke D, Porter S, Thomas K, O'Hagan BMG, Nomikou N, Callan B, Callan JF, McHale AP. Exploiting a Rose Bengal-bearing, oxygen-producing nanoparticle for SDT and associated immune-mediated therapeutic effects in the treatment of pancreatic cancer. Eur J Pharm Biopharm 2021; 163:49-59. [PMID: 33798727 DOI: 10.1016/j.ejpb.2021.03.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 02/17/2021] [Accepted: 03/11/2021] [Indexed: 12/07/2022]
Abstract
Sonodynamic therapy (SDT) is an emerging stimulus-responsive approach for the targeted treatment of solid tumours. However, its ability to generate stimulus-responsive cytotoxic reactive oxygen species (ROS), is compromised by tumour hypoxia. Here we describe a robust means of preparing a pH-sensitive polymethacrylate-coated CaO2 nanoparticle that is capable of transiently alleviating tumour hypoxia. Systemic administration of particles to animals bearing human xenograft BxPC3 pancreatic tumours increases oxygen partial pressures (PO2) to 20-50 mmHg for over 40 min. RT-qPCR analysis of expression of selected tumour marker genes in treated animals suggests that the transient production of oxygen is sufficient to elicit effects at a molecular genetic level. Using particles labelled with the near infra-red (nIR) fluorescent dye, indocyanine green, selective uptake of particles by tumours was observed. Systemic administration of particles containing Rose Bengal (RB) at concentrations of 0.1 mg/mg of particles are capable of eliciting nanoparticle-induced, SDT-mediated antitumour effects using the BxPC3 human pancreatic tumour model in immuno-compromised mice. Additionally, a potent abscopal effect was observed in off-target tumours in a syngeneic murine bilateral tumour model for pancreatic cancer and an increase in tumour cytotoxic T cells (CD8+) and a decrease in immunosuppressive tumour regulatory T cells [Treg (CD4+, FoxP3+)] was observed in both target and off-target tumours in SDT treated animals. We suggest that this approach offers significant potential in the treatment of both focal and disseminated (metastatic) pancreatic cancer.
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Affiliation(s)
- Dean Nicholas
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Heather Nesbitt
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Sian Farrell
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Keirin Logan
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Eva McMullin
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Tierna Gillan
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Paul Kelly
- Department of Cellular Pathology, Royal Victoria Hospital, Belfast Health and Social Care Trust, Grosvenor Road, Belfast, Northern Ireland BT12 6BA, UK
| | - Declan O'Rourke
- Department of Cellular Pathology, Royal Victoria Hospital, Belfast Health and Social Care Trust, Grosvenor Road, Belfast, Northern Ireland BT12 6BA, UK
| | - Simon Porter
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Keith Thomas
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Barry M G O'Hagan
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Nikolitsa Nomikou
- Department of Surgical Biotechnology, Div of Surgery & Interventional Sci, University College London, Royal Free Hospital, Pond Street, London NW3 2PF, UK
| | - Bridgeen Callan
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - John F Callan
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK.
| | - Anthony P McHale
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK.
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11
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Ruan JL, Browning RJ, Yildiz YO, Bau L, Kamila S, Gray MD, Folkes L, Hampson A, McHale AP, Callan JF, Vojnovic B, Kiltie AE, Stride E. Evaluation of Loading Strategies to Improve Tumor Uptake of Gemcitabine in a Murine Orthotopic Bladder Cancer Model Using Ultrasound and Microbubbles. Ultrasound Med Biol 2021; 47:1596-1615. [PMID: 33707089 DOI: 10.1016/j.ultrasmedbio.2021.02.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 02/01/2021] [Accepted: 02/02/2021] [Indexed: 06/12/2023]
Abstract
In this study we compared three different microbubble-based approaches to the delivery of a widely used chemotherapy drug, gemcitabine: (i) co-administration of gemcitabine and microbubbles (Gem+MB); (ii) conjugates of microbubbles and gemcitabine-loaded liposomes (GemlipoMB); and (iii) microbubbles with gemcitabine directly bound to their surfaces (GembioMB). Both in vitro and in vivo investigations were carried out, respectively, in the RT112 bladder cancer cell line and in a murine orthotopic muscle-invasive bladder cancer model. The in vitro (in vivo) ultrasound exposure conditions were a 1 (1.1) MHz centre frequency, 0.07 (1.0) MPa peak negative pressure, 3000 (20,000) cycles and 100 (0.5) Hz pulse repetition frequency. Ultrasound exposure produced no significant increase in drug uptake either in vitro or in vivo compared with the drug-only control for co-administered gemcitabine and microbubbles. In vivo, GemlipoMB prolonged the plasma circulation time of gemcitabine, but only GembioMB produced a statistically significant increase in cleaved caspase 3 expression in the tumor, indicative of gemcitabine-induced apoptosis.
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Affiliation(s)
- Jia-Ling Ruan
- MRC Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, United Kingdom
| | - Richard J Browning
- Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
| | - Yesna O Yildiz
- MRC Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, United Kingdom
| | - Luca Bau
- Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
| | - Sukanta Kamila
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - Michael D Gray
- Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
| | - Lisa Folkes
- MRC Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, United Kingdom
| | - Alix Hampson
- MRC Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, United Kingdom
| | - Anthony P McHale
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - John F Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - Borivoj Vojnovic
- MRC Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, United Kingdom
| | - Anne E Kiltie
- MRC Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, United Kingdom
| | - Eleanor Stride
- Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom.
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12
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Ruan JL, Browning RJ, Yildiz YO, Gray M, Bau L, Kamila S, Thompson J, Elliott A, Smart S, McHale AP, Callan JF, Vojnovic B, Stride E, Kiltie AE. Ultrasound-Mediated Gemcitabine Delivery Reduces the Normal-Tissue Toxicity of Chemoradiation Therapy in a Muscle-Invasive Bladder Cancer Model. Int J Radiat Oncol Biol Phys 2021; 109:1472-1482. [PMID: 33714528 PMCID: PMC7955285 DOI: 10.1016/j.ijrobp.2020.11.046] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 11/03/2020] [Accepted: 11/03/2020] [Indexed: 12/19/2022]
Abstract
PURPOSE Chemoradiation therapy is the standard of care in muscle-invasive bladder cancer (MIBC). Although agents such as gemcitabine can enhance tumor radiosensitivity, their side effects can limit patient eligibility and treatment efficacy. This study investigates ultrasound and microbubbles for targeting gemcitabine delivery to reduce normal-tissue toxicity in a murine orthotopic MIBC model. MATERIALS AND METHODS CD1-nude mice were injected orthotopically with RT112 bladder tumor cells. Conventional chemoradiation involved injecting gemcitabine (10 mg/kg) before 6 Gy targeted irradiation of the bladder area using the Small Animal Radiation Research Platform (SARRP). Ultrasound-mediated gemcitabine delivery (10 mg/kg gemcitabine) involved either coadministration of microbubbles with gemcitabine or conjugating gemcitabine onto microbubbles followed by exposure to ultrasound (1.1 MHz center frequency, 1 MPa peak negative pressure, 1% duty cycle, and 0.5 Hz pulse repetition frequency) before SARRP irradiation. The effect of ultrasound and microbubbles alone was also tested. Tumor volumes were measured by 3D ultrasound imaging. Acute normal-tissue toxicity from 12 Gy to the lower bowel area was assessed using an intestinal crypt assay in mice culled 3.75 days posttreatment. RESULTS A significant delay in tumor growth was observed with conventional chemoradiation therapy and both microbubble groups (P < .05 compared with the radiation-only group). Transient weight loss was seen in the microbubble groups, which resolved within 10 days posttreatment. A positive correlation was found between weight loss on day 3 posttreatment and tumor growth delay (P < .05; R2 = 0.76). In contrast with conventional chemoradiation therapy, ultrasound-mediated drug delivery methods did not exacerbate the acute intestinal toxicity using the crypt assay. CONCLUSIONS Ultrasound and microbubbles offer a promising new approach for improving chemoradiation therapy for muscle-invasive bladder cancer, maintaining a delay in tumor growth but with reduced acute intestinal toxicity compared with conventional chemoradiation therapy.
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Affiliation(s)
- Jia-Ling Ruan
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Richard J Browning
- Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
| | - Yesna O Yildiz
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Michael Gray
- Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
| | - Luca Bau
- Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
| | - Sukanta Kamila
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - James Thompson
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Amy Elliott
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Sean Smart
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Anthony P McHale
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - John F Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - Borivoj Vojnovic
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom
| | - Eleanor Stride
- Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
| | - Anne E Kiltie
- Department of Oncology, Oxford Institute for Radiation Oncology, University of Oxford, Oxford, United Kingdom.
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13
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Gao J, Nesbitt H, Logan K, Burnett K, White B, Jack IG, Taylor MA, Love M, Callan B, McHale AP, Callan JF. An ultrasound responsive microbubble-liposome conjugate for targeted irinotecan-oxaliplatin treatment of pancreatic cancer. Eur J Pharm Biopharm 2020; 157:233-240. [PMID: 33222772 DOI: 10.1016/j.ejpb.2020.10.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/24/2020] [Accepted: 10/20/2020] [Indexed: 12/22/2022]
Abstract
Survival rates in pancreatic cancer have remained largely unchanged over the past four decades with less than 5% of patients surviving five years following initial diagnosis. FOLFIRINOX chemotherapy, a combination of folinic acid, 5-fluoruracil, irinotecan and oxaliplatin, has shown the greatest survival benefit for patients with advanced disease but is only indicated for those with good physical performance status due to its extreme off-target toxicity. Ultrasound targeted microbubble destruction (UTMD) has emerged as an effective strategy for the targeted delivery of drug payloads to solid tumours and involves using low intensity ultrasound to disrupt (burst) MBs in the tumour vasculature, releasing encapsulated or attached drugs in a targeted manner. In this manuscript, we describe the preparation of a microbubble-liposome complex (IRMB-OxLipo) carrying two of the three cytotoxic drugs present in the FOLFIRINOX combination, namely irinotecan and oxaliplatin. Efficacy of the IRMB-OxLipo complex following UTMD was determined in Panc-01 3D spheroid and BxPC-3 human xenograft murine models of pancreatic cancer. The results revealed that tumours treated with the IRMB-OxLipo complex and ultrasound were 136% smaller than tumours treated with the same concentration of irinotecan/oxaliplatin but delivered in a conventional manner, i.e. as a non-complexed mixture. This suggests that UTMD facilitates a more effective delivery of irinotecan/oxaliplatin improving the overall effectiveness of this drug combination and to the best of our knowledge, is the first reported example of a microbubble-liposome complex used to deliver these two chemotherapies.
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Affiliation(s)
- Jinhui Gao
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Heather Nesbitt
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Keiran Logan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Kathryn Burnett
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Bronagh White
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Iain G Jack
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Mark A Taylor
- Department of HPB Surgery, Mater Hospital, Belfast, Northern Ireland BT14 6AB, UK
| | - Mark Love
- Imaging Centre, The Royal Victoria Hospital, Grosvenor Road, Belfast, Northern Ireland BT12 6BA, UK
| | - Bridgeen Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Anthony P McHale
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - John F Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK.
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14
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Dhillon SK, Porter SL, Rizk N, Sheng Y, McKaig T, Burnett K, White B, Nesbitt H, Matin RN, McHale AP, Callan B, Callan JF. Rose Bengal–Amphiphilic Peptide Conjugate for Enhanced Photodynamic Therapy of Malignant Melanoma. J Med Chem 2020; 63:1328-1336. [DOI: 10.1021/acs.jmedchem.9b01802] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Simanpreet Kaur Dhillon
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, Northern Ireland, U.K
| | - Simon L. Porter
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, Northern Ireland, U.K
| | - Nermeen Rizk
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, Northern Ireland, U.K
| | - Yingjie Sheng
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, Northern Ireland, U.K
| | - Thomas McKaig
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, Northern Ireland, U.K
| | - Kathyrn Burnett
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, Northern Ireland, U.K
| | - Bronagh White
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, Northern Ireland, U.K
| | - Heather Nesbitt
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, Northern Ireland, U.K
| | - Rubeta N. Matin
- Department of Dermatology, Churchill Hospital, Old Road, Headington, Oxford OX3 7LE, U.K
| | - Anthony P. McHale
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, Northern Ireland, U.K
| | - Bridgeen Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, Northern Ireland, U.K
| | - John F. Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, Northern Ireland, U.K
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15
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Owen J, Kamila S, Shrivastava S, Carugo D, Bernardino de la Serna J, Mannaris C, Pereno V, Browning R, Beguin E, McHale AP, Callan JF, Stride E. The Role of PEG-40-stearate in the Production, Morphology, and Stability of Microbubbles. Langmuir 2019; 35:10014-10024. [PMID: 30485112 DOI: 10.1021/acs.langmuir.8b02516] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Phospholipid coated microbubbles are currently in widespread clinical use as ultrasound contrast agents and under investigation for therapeutic applications. Previous studies have demonstrated the importance of the coating nanostructure in determining microbubble stability and its dependence upon both composition and processing method. While the influence of different phospholipids has been widely investigated, the role of other constituents such as emulsifiers has received comparatively little attention. Herein, we present an examination of the impact of polyethylene glycol (PEG) derivatives upon microbubble structure and properties. We present data using both pegylated phospholipids and a fluorescent PEG-40-stearate analogue synthesized in-house to directly observe its distribution in the microbubble coating. We examined microbubbles of clinically relevant sizes, investigating both their surface properties and population size distribution and stability. Domain formation was observed only on the surface of larger microbubbles, which were found to contain a higher concentration of PEG-40-stearate. Lipid analogue dyes were also found to influence domain formation compared with PEG-40-stearate alone. "Squeezing out" of PEG-40-stearate was not observed from any of the microbubble sizes investigated. At ambient temperature, microbubbles formulated with DSPE-PEG(2000) were found to be more stable than those containing PEG-40-stearate. At 37 °C, however, the stability in serum was found to be the same for both formulations, and no difference in acoustic backscatter was detected. This could potentially reduce the cost of PEGylated microbubbles and facilitate simpler attachment of targeting or therapeutic species. However, whether PEG-40-stearate sufficiently shields microbubbles to inhibit physiological clearance mechanisms still requires investigation.
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Affiliation(s)
- Joshua Owen
- Old Road Campus Research Building , University of Oxford , Oxford OX3 7DQ , United Kingdom
| | - Sukanta Kamila
- School of Pharmacy and Pharmaceutical Science , University of Ulster , Coleraine BT52 1SA , United Kingdom
| | - Shamit Shrivastava
- Old Road Campus Research Building , University of Oxford , Oxford OX3 7DQ , United Kingdom
| | - Dario Carugo
- Faculty of Engineering and the Environment , University of Southampton , Highfield, Southampton SO17 1BJ , United Kingdom
| | - Jorge Bernardino de la Serna
- Central Laser Facility , STFC Rutherford Appleton Laboratory , Harwell Campus , Didcot OX11 0QX , United Kingdom
| | - Christophoros Mannaris
- Old Road Campus Research Building , University of Oxford , Oxford OX3 7DQ , United Kingdom
| | - Valerio Pereno
- Old Road Campus Research Building , University of Oxford , Oxford OX3 7DQ , United Kingdom
| | - Richard Browning
- Old Road Campus Research Building , University of Oxford , Oxford OX3 7DQ , United Kingdom
| | - Estelle Beguin
- Old Road Campus Research Building , University of Oxford , Oxford OX3 7DQ , United Kingdom
| | - Anthony P McHale
- School of Pharmacy and Pharmaceutical Science , University of Ulster , Coleraine BT52 1SA , United Kingdom
| | - John F Callan
- School of Pharmacy and Pharmaceutical Science , University of Ulster , Coleraine BT52 1SA , United Kingdom
| | - Eleanor Stride
- Old Road Campus Research Building , University of Oxford , Oxford OX3 7DQ , United Kingdom
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16
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Beguin E, Shrivastava S, Dezhkunov NV, McHale AP, Callan JF, Stride E. Direct Evidence of Multibubble Sonoluminescence Using Therapeutic Ultrasound and Microbubbles. ACS Appl Mater Interfaces 2019; 11:19913-19919. [PMID: 31074968 PMCID: PMC7006998 DOI: 10.1021/acsami.9b07084] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 05/10/2019] [Indexed: 05/08/2023]
Abstract
The intense conditions generated in the core of a collapsing bubble have been the subject of intense scrutiny from fields as diverse as marine biology and nuclear fusion. In particular, the phenomenon of sonoluminescence, whereby a collapsing bubble emits light, has received significant attention. Sonoluminescence has been associated predominantly with millimeter-sized bubbles excited at low frequencies and under conditions far removed from those associated with the use of ultrasound in medicine. In this study, however, we demonstrate that sonoluminescence is produced under medically relevant exposure conditions by microbubbles commonly used as contrast agents for ultrasound imaging. This provides a mechanistic explanation for the somewhat controversial reports of "sonodynamic" therapy, in which light-sensitive drugs have been shown to be activated by ultrasound-induced cavitation. To illustrate this, we demonstrate the activation of a photodynamic therapy agent using microbubbles and ultrasound. Since ultrasound can be accurately focused at large tissue depths, this opens up the potential for generating light at locations that cannot be reached by external sources. This could be exploited both for diagnostic and therapeutic applications, significantly increasing the range of applications that are currently restricted by the limited penetration of light in the tissue.
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Affiliation(s)
- Estelle Beguin
- Department
of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, United Kingdom
| | - Shamit Shrivastava
- Department
of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, United Kingdom
| | | | - Anthony P. McHale
- Biomedical
Sciences Research Institute, Ulster University, Coleraine BT52 1SA, United Kingdom
| | - John F. Callan
- Biomedical
Sciences Research Institute, Ulster University, Coleraine BT52 1SA, United Kingdom
| | - Eleanor Stride
- Department
of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, United Kingdom
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17
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Logan K, Foglietta F, Nesbitt H, Sheng Y, McKaig T, Kamila S, Gao J, Nomikou N, Callan B, McHale AP, Callan JF. Targeted chemo-sonodynamic therapy treatment of breast tumours using ultrasound responsive microbubbles loaded with paclitaxel, doxorubicin and Rose Bengal. Eur J Pharm Biopharm 2019; 139:224-231. [DOI: 10.1016/j.ejpb.2019.04.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/29/2019] [Accepted: 04/02/2019] [Indexed: 01/11/2023]
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18
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Nicholas D, Logan KA, Sheng Y, Gao J, Farrell S, Dixon D, Callan B, McHale AP, Callan JF. Rapid paper based colorimetric detection of glucose using a hollow microneedle device. Int J Pharm 2018; 547:244-249. [DOI: 10.1016/j.ijpharm.2018.06.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 05/15/2018] [Accepted: 06/02/2018] [Indexed: 11/26/2022]
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19
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Nesbitt H, Sheng Y, Kamila S, Logan K, Thomas K, Callan B, Taylor MA, Love M, O'Rourke D, Kelly P, Beguin E, Stride E, McHale AP, Callan JF. Gemcitabine loaded microbubbles for targeted chemo-sonodynamic therapy of pancreatic cancer. J Control Release 2018; 279:8-16. [DOI: 10.1016/j.jconrel.2018.04.018] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 04/06/2018] [Accepted: 04/09/2018] [Indexed: 12/11/2022]
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20
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Alves F, Pavarina AC, Mima EGDO, McHale AP, Callan JF. Antimicrobial sonodynamic and photodynamic therapies against Candida albicans. Biofouling 2018; 34:357-367. [PMID: 29671631 DOI: 10.1080/08927014.2018.1439935] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 02/06/2018] [Indexed: 06/08/2023]
Abstract
Candida albicans biofilms exhibit unique characteristics and are highly resistant to antifungal agents. Antimicrobial photodynamic therapy (aPDT) is an alternative treatment limited to treating superficial infections due to the poor light penetration. In this manuscript, the antifungal properties of sonodynamic therapy (SDT) were assessed. SDT uses ultrasound instead of light, enabling the treatment of deeper infections. Planktonic cells and biofilms of C. albicans were treated with aPDT or SDT, in addition to combined aPDT/SDT, with cell survival determined using colony forming units. The total biomass and structural integrity of the biofilms were also investigated. The results demonstrated that while individual aPDT or SDT eradicated suspensions, they had little impact on biofilms. However, combined aPDT/SDT significantly reduced the viability and total biomass of biofilms. Microscopic images revealed that biofilms treated with aPDT/SDT were thinner and comprised mainly of dead cells. These results highlight the potential of combined aPDT/SDT for the inactivation of C. albicans biofilms.
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Affiliation(s)
- Fernanda Alves
- a Department of Dental Materials and Prosthodontics, School of Dentistry , São Paulo State University (UNESP) , Araraquara , Brazil
| | - Ana Cláudia Pavarina
- a Department of Dental Materials and Prosthodontics, School of Dentistry , São Paulo State University (UNESP) , Araraquara , Brazil
| | - Ewerton Garcia de Oliveira Mima
- a Department of Dental Materials and Prosthodontics, School of Dentistry , São Paulo State University (UNESP) , Araraquara , Brazil
| | - Anthony P McHale
- b School of Pharmacy and Pharmaceutical Sciences, Faculty of Life & Health Sciences , Ulster University , Coleraine , UK
| | - John Francis Callan
- b School of Pharmacy and Pharmaceutical Sciences, Faculty of Life & Health Sciences , Ulster University , Coleraine , UK
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21
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Sheng Y, Nesbitt H, Callan B, Taylor MA, Love M, McHale AP, Callan JF. Oxygen generating nanoparticles for improved photodynamic therapy of hypoxic tumours. J Control Release 2017; 264:333-340. [DOI: 10.1016/j.jconrel.2017.09.004] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 08/28/2017] [Accepted: 09/01/2017] [Indexed: 01/10/2023]
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22
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Sheng Y, Beguin E, Nesbitt H, Kamila S, Owen J, Barnsley LC, Callan B, O'Kane C, Nomikou N, Hamoudi R, Taylor MA, Love M, Kelly P, O'Rourke D, Stride E, McHale AP, Callan JF. Magnetically responsive microbubbles as delivery vehicles for targeted sonodynamic and antimetabolite therapy of pancreatic cancer. J Control Release 2017; 262:192-200. [DOI: 10.1016/j.jconrel.2017.07.040] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 07/19/2017] [Accepted: 07/28/2017] [Indexed: 12/24/2022]
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23
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Nomikou N, Feichtinger GA, Saha S, Nuernberger S, Heimel P, Redl H, McHale AP. Ultrasound-responsive gene-activated matrices for osteogenic gene therapy using matrix-assisted sonoporation. J Tissue Eng Regen Med 2017; 12:e250-e260. [PMID: 28084018 DOI: 10.1002/term.2406] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 12/20/2016] [Accepted: 01/10/2017] [Indexed: 01/11/2023]
Abstract
Gene-activated matrix (GAM)-based therapeutics for tissue regeneration are limited by efficacy, the lack of spatiotemporal control and availability of target cells, all of which impact negatively on their translation to the clinic. Here, an advanced ultrasound-responsive GAM is described containing target cells that facilitates matrix-assisted sonoporation (MAS) to induce osteogenic differentiation. Ultrasound-responsive GAMs consisting of fibrin/collagen hybrid-matrices containing microbubbles, bone morphogenetic protein BMP2/7 coexpression plasmids together with C2C12 cells were treated with ultrasound either in vitro or following parenteral intramuscular implantation in vivo. Using direct measurement for alkaline phosphatase activity, von Kossa staining and immunohistochemical analysis for osteocalcin expression, MAS-stimulated osteogenic differentiation was confirmed in the GAMs in vitro 7 days after treatment with ultrasound. At day 30 post-treatment with ultrasound, ectopic osteogenic differentiation was confirmed in vivo using X-ray microcomputed tomography and histological analysis. Osteogenic differentiation was indicated by the presence of ectopic bone structures in all animals treated with MAS. In addition, bone volumes in this group were statistically greater than those in the control groups. This novel approach of incorporating a MAS capability into GAMs could be exploited to facilitate ex vivo gene transfer with subsequent surgical implantation or alternatively provide a minimally invasive means of stimulating in situ transgene delivery for osteoinductive gene-based therapies. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- N Nomikou
- Research Department of General Surgery, Division of Surgery and Interventional Science, Faculty of Medical Sciences, University College London, London, UK
| | - G A Feichtinger
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Centre, Austrian Cluster for Tissue Regeneration, European Institute of Excellence on Tissue Engineering and Regenerative Medicine Research (Expertissues EEIG) Vienna Branch, Vienna, Austria.,Department of Oral Biology, School of Dentistry, University of Leeds, Leeds, UK
| | - S Saha
- Department of Oral Biology, School of Dentistry, University of Leeds, Leeds, UK
| | - S Nuernberger
- Medical University of Vienna, Department of Traumatology, Vienna, Austria.,Bernhard Gottlieb University Clinic of Dentistry, Vienna, Austria
| | - P Heimel
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Centre, Austrian Cluster for Tissue Regeneration, European Institute of Excellence on Tissue Engineering and Regenerative Medicine Research (Expertissues EEIG) Vienna Branch, Vienna, Austria
| | - H Redl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Centre, Austrian Cluster for Tissue Regeneration, European Institute of Excellence on Tissue Engineering and Regenerative Medicine Research (Expertissues EEIG) Vienna Branch, Vienna, Austria
| | - A P McHale
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, UK
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24
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Tarassoli SP, de Pinillos Bayona AM, Pye H, Mosse CA, Callan JF, MacRobert A, McHale AP, Nomikou N. Cathepsin B-degradable, NIR-responsive nanoparticulate platform for target-specific cancer therapy. Nanotechnology 2017; 28:055101. [PMID: 28029105 DOI: 10.1088/1361-6528/28/5/055101] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Stimuli-responsive anticancer formulations can promote drug release and activation within the target tumour, facilitate cellular uptake, as well as improve the therapeutic efficacy of drugs and reduce off-target effects. In the present work, indocyanine green (ICG)-containing polyglutamate (PGA) nanoparticles were developed and characterized. Digestion of nanoparticles with cathepsin B, a matrix metalloproteinase overexpressed in the microenvironment of advanced tumours, decreased particle size and increased ICG cellular uptake. Incorporation of ICG in PGA nanoparticles provided the NIR-absorbing agent with time-dependent altered optical properties in the presence of cathepsin B. Having minimal dark toxicity, the formulation exhibited significant cytotoxicity upon NIR exposure. Combined use of the formulation with saporin, a ribosome-inactivating protein, resulted in synergistically enhanced cytotoxicity attributed to the photo-induced release of saporin from endo/lysosomes. The results suggest that this therapeutic approach can offer significant therapeutic benefit in the treatment of superficial malignancies, such as head and neck tumours.
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Affiliation(s)
- Sam P Tarassoli
- Division of Surgery & Interventional Science, University College London, Royal Free Hospital, Pond Street, NW3 2PF, London, UK
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25
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Atchison J, Kamila S, Nesbitt H, Logan KA, Nicholas DM, Fowley C, Davis J, Callan B, McHale AP, Callan JF. Iodinated cyanine dyes: a new class of sensitisers for use in NIR activated photodynamic therapy (PDT). Chem Commun (Camb) 2017; 53:2009-2012. [DOI: 10.1039/c6cc09624g] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Iodinated cyanine dye 6a has been developed for use as a NIR excited photosensitiser in photodynamic therapy.
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Affiliation(s)
- Jordan Atchison
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - Sukanta Kamila
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - Heather Nesbitt
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - Kieran A. Logan
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - Dean M Nicholas
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - Colin Fowley
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - James Davis
- Engineering Research Institute
- University of Ulster
- Coleraine
- UK
| | - Bridgeen Callan
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - Anthony P McHale
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - John F Callan
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
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26
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Owen J, McEwan C, Nesbitt H, Bovornchutichai P, Averre R, Borden M, McHale AP, Callan JF, Stride E. Reducing Tumour Hypoxia via Oral Administration of Oxygen Nanobubbles. PLoS One 2016; 11:e0168088. [PMID: 28036332 PMCID: PMC5201233 DOI: 10.1371/journal.pone.0168088] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Accepted: 11/25/2016] [Indexed: 12/03/2022] Open
Abstract
Hypoxia has been shown to be a key factor inhibiting the successful treatment of solid tumours. Existing strategies for reducing hypoxia, however, have shown limited efficacy and/or adverse side effects. The aim of this study was to investigate the potential for reducing tumour hypoxia using an orally delivered suspension of surfactant-stabilised oxygen nanobubbles. Experiments were carried out in a mouse xenograft tumour model for human pancreatic cancer (BxPc-3 cells in male SCID mice). A single dose of 100 μL of oxygen saturated water, oxygen nanobubbles or argon nanobubbles was administered via gavage. Animals were sacrificed 30 minutes post-treatment (3 per group) and expression of hypoxia-inducible-factor-1α (HIF1α) protein measured by real time quantitative polymerase chain reaction and Western blot analysis of the excised tumour tissue. Neither the oxygen saturated water nor argon nanobubbles produced a statistically significant change in HIF1α expression at the transcriptional level. In contrast, a reduction of 75% and 25% in the transcriptional and translational expression of HIF1α respectively (p<0.001) was found for the animals receiving the oxygen nanobubbles. This magnitude of reduction has been shown in previous studies to be commensurate with an improvement in outcome with both radiation and drug-based treatments. In addition, there was a significant reduction in the expression of vascular endothelial growth factor (VEGF) in this group and corresponding increase in the expression of arrest-defective protein 1 homolog A (ARD1A).
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Affiliation(s)
- Joshua Owen
- Oxford Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
| | - Conor McEwan
- Biomedical Sciences Research Institute, Ulster University, Coleraine, Northern Ireland, United Kingdom
| | - Heather Nesbitt
- Biomedical Sciences Research Institute, Ulster University, Coleraine, Northern Ireland, United Kingdom
| | - Phurit Bovornchutichai
- Oxford Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
| | - Raymond Averre
- Avrox Technologies Ltd. Copgrove, Harrogate, North Yorkshire, United Kingdom
| | - Mark Borden
- Department of Mechanical Engineering, University of Colorado, 1111 Engineering Drive, Boulder, CO, United States of America
| | - Anthony P. McHale
- Biomedical Sciences Research Institute, Ulster University, Coleraine, Northern Ireland, United Kingdom
| | - John F. Callan
- Biomedical Sciences Research Institute, Ulster University, Coleraine, Northern Ireland, United Kingdom
| | - Eleanor Stride
- Oxford Institute of Biomedical Engineering, University of Oxford, Oxford, United Kingdom
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27
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Costley D, Nesbitt H, Ternan N, Dooley J, Huang YY, Hamblin MR, McHale AP, Callan JF. Sonodynamic inactivation of Gram-positive and Gram-negative bacteria using a Rose Bengal-antimicrobial peptide conjugate. Int J Antimicrob Agents 2016; 49:31-36. [PMID: 27908581 DOI: 10.1016/j.ijantimicag.2016.09.034] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 09/01/2016] [Accepted: 09/17/2016] [Indexed: 12/31/2022]
Abstract
Combating antimicrobial resistance is one of the most serious public health challenges facing society today. The development of new antibiotics or alternative techniques that can help combat antimicrobial resistance is being prioritised by many governments and stakeholders across the globe. Antimicrobial photodynamic therapy is one such technique that has received considerable attention but is limited by the inability of light to penetrate through human tissue, reducing its effectiveness when used to treat deep-seated infections. The related technique sonodynamic therapy (SDT) has the potential to overcome this limitation given the ability of low-intensity ultrasound to penetrate human tissue. In this study, a Rose Bengal-antimicrobial peptide conjugate was prepared for use in antimicrobial SDT (ASDT). When Staphylococcus aureus and Pseudomonas aeruginosa planktonic cultures were treated with the conjugate and subsequently exposed to ultrasound, 5 log and 7 log reductions, respectively, in bacterial numbers were observed. The conjugate also displayed improved uptake by bacterial cells compared with a mammalian cell line (P ≤ 0.01), whilst pre-treatment of a P. aeruginosa biofilm with ultrasound resulted in a 2.6-fold improvement in sensitiser diffusion (P ≤ 0.01). A preliminary in vivo experiment involving ASDT treatment of P. aeruginosa-infected wounds in mice demonstrated that ultrasound irradiation of conjugate-treated wounds affects a substantial reduction in bacterial burden. Combined, the results obtained from this study highlight ASDT as a targeted broad-spectrum novel modality with potential for the treatment of deep-seated bacterial infections.
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Affiliation(s)
- David Costley
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, UK
| | - Heather Nesbitt
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, UK
| | - Nigel Ternan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, UK
| | - James Dooley
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, UK
| | - Ying-Ying Huang
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
| | - Anthony P McHale
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, UK
| | - John F Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine BT52 1SA, UK.
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28
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McEwan C, Nesbitt H, Nicholas D, Kavanagh ON, McKenna K, Loan P, Jack IG, McHale AP, Callan JF. Comparing the efficacy of photodynamic and sonodynamic therapy in non-melanoma and melanoma skin cancer. Bioorg Med Chem 2016; 24:3023-3028. [PMID: 27234890 DOI: 10.1016/j.bmc.2016.05.015] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 04/08/2016] [Accepted: 05/11/2016] [Indexed: 12/20/2022]
Abstract
Sonodynamic therapy (SDT) involves the activation of a non-toxic sensitiser drug using low-intensity ultrasound to produce cytotoxic reactive oxygen species (ROS). Given the low tissue attenuation of ultrasound, SDT provides a significant benefit over the more established photodynamic therapy (PDT) as it enables activation of sensitisers at a greater depth within human tissue. In this manuscript, we compare the efficacy of aminolevulinic acid (ALA) mediated PDT and SDT in a squamous cell carcinoma (A431) cell line as well as the ability of these treatments to reduce the size of A431 ectopic tumours in mice. Similarly, the relative cytotoxic ability of Rose Bengal mediated PDT and SDT was investigated in a B16-melanoma cell line and also in a B16 ectopic tumour model. The results reveal no statistically significant difference in efficacy between ALA mediated PDT or SDT in the non-melanoma model while Rose Bengal mediated SDT was significantly more efficacious than PDT in the melanoma model. This difference in efficacy was, at least in part, attributed to the dark pigmentation of the melanoma cells that effectively filtered the excitation light preventing it from activating the sensitiser while the use of ultrasound circumvented this problem. These results suggest SDT may provide a better outcome than PDT when treating highly pigmented cancerous skin lesions.
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Affiliation(s)
- Conor McEwan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Heather Nesbitt
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Dean Nicholas
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Oisin N Kavanagh
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Kevin McKenna
- Department of Dermatology, Belfast City Hospital, Belfast, Northern Ireland BT9 7AB, UK
| | - Philip Loan
- Regional Medical Physics Service, Forster Green Hospital, 110 Saintfield Road, Belfast BT8 8HD, UK
| | - Iain G Jack
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK
| | - Anthony P McHale
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK.
| | - John F Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland BT52 1SA, UK.
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McHale AP, Callan JF, Nomikou N, Fowley C, Callan B. Sonodynamic Therapy: Concept, Mechanism and Application to Cancer Treatment. Adv Exp Med Biol 2016; 880:429-50. [PMID: 26486350 DOI: 10.1007/978-3-319-22536-4_22] [Citation(s) in RCA: 184] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Sonodynamic therapy (SDT) represents an emerging approach that offers the possibility of non-invasively eradicating solid tumors in a site-directed manner. It involves the sensitization of target tissues with a non-toxic sensitizing chemical agent and subsequent exposure of the sensitized tissues to relatively low-intensity ultrasound. Essentially, both aspects (the sensitization and ultrasound exposure) are harmless, and cytotoxic events occur when both are combined. Due to the significant depth that ultrasound penetrates tissue, the approach provides an advantage over similar alternative approaches, such as photodynamic therapy (PDT), in which less penetrating light is employed to provide the cytotoxic effect in sensitized tissues. This suggests that sonodynamic therapy may find wider clinical application, particularly for the non-invasive treatment of less accessible lesions. Early SDT-based approaches employed many of the sensitizers used in PDT, although the manner in which ultrasound activates the sensitizer differs from activation events in PDT. Here we will review the currently accepted mechanisms by which ultrasound activates sensitizers to elicit cytotoxic effects. In addition, we will explore the breath of evidence from in-vitro and in-vivo SDT-based studies, providing the reader with an insight into the therapeutic potential offered by SDT in the treatment of cancer.
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Affiliation(s)
- Anthony P McHale
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Co. Derry, BT2 1SA, UK
| | - John F Callan
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Co. Derry, BT2 1SA, UK.
| | - Nikolitsa Nomikou
- Division of Surgery and Interventional Science, University College London, 4th Floor, 67-73 Riding House St, London, W1W 7EJ, England, UK
| | - Colin Fowley
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Co. Derry, BT2 1SA, UK
| | - Bridgeen Callan
- School of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, Co. Derry, BT2 1SA, UK
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30
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McEwan C, Kamila S, Owen J, Nesbitt H, Callan B, Borden M, Nomikou N, Hamoudi RA, Taylor MA, Stride E, McHale AP, Callan JF. Combined sonodynamic and antimetabolite therapy for the improved treatment of pancreatic cancer using oxygen loaded microbubbles as a delivery vehicle. Biomaterials 2015; 80:20-32. [PMID: 26702983 DOI: 10.1016/j.biomaterials.2015.11.033] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 11/23/2015] [Accepted: 11/24/2015] [Indexed: 12/19/2022]
Abstract
In this manuscript we describe the preparation of an oxygen-loaded microbubble (O2MB) platform for the targeted treatment of pancreatic cancer using both sonodynamic therapy (SDT) and antimetabolite therapy. O2MB were prepared with either the sensitiser Rose Bengal (O2MB-RB) or the antimetabolite 5-fluorouracil (O2MB-5FU) attached to the microbubble (MB) surface. The MB were characterised with respect to size, physical stability and oxygen retention. A statistically significant reduction in cell viability was observed when three different pancreatic cancer cell lines (BxPc-3, MIA PaCa-2 and PANC-1), cultured in an anaerobic cabinet, were treated with both SDT and antimetabolite therapy compared to either therapy alone. In addition, a statistically significant reduction in tumour growth was also observed when ectopic human xenograft BxPC-3 tumours in SCID mice were treated with the combined therapy compared to treatment with either therapy alone. These results illustrate not only the potential of combined SDT/antimetabolite therapy as a stand alone treatment option in pancreatic cancer, but also the capability of O2-loaded MBs to deliver O2 to the tumour microenvironment in order to enhance the efficacy of therapies that depend on O2 to mediate their therapeutic effect. Furthermore, the use of MBs to facilitate delivery of O2 as well as the sensitiser/antimetabolite, combined with the possibility to activate the sensitiser using externally applied ultrasound, provides a more targeted approach with improved efficacy and reduced side effects when compared with conventional systemic administration of antimetabolite drugs alone.
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Affiliation(s)
- Conor McEwan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Sukanta Kamila
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Joshua Owen
- Institute of Biomedical Engineering, University of Oxford, OX3 7DQ, UK
| | - Heather Nesbitt
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Bridgeen Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK
| | - Mark Borden
- Department of Mechanical Engineering, University of Colorado, 1111 Engineering Drive, Boulder, CO 80309, USA
| | - Nikolitsa Nomikou
- Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London, UK
| | - Rifat A Hamoudi
- Division of Surgery & Interventional Science, Faculty of Medical Sciences, University College London, UK
| | - Mark A Taylor
- Department of HPB Surgery, Mater Hospital, Belfast, Northern Ireland, BT14 6AB, UK
| | - Eleanor Stride
- Institute of Biomedical Engineering, University of Oxford, OX3 7DQ, UK.
| | - Anthony P McHale
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK.
| | - John F Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, BT52 1SA, UK.
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Fowley C, McHale AP, McCaughan B, Fraix A, Sortino S, Callan JF. Quantum dot-sensitiser conjugates for two-photon excited photodynamic therapy. Photodiagnosis Photodyn Ther 2015. [DOI: 10.1016/j.pdpdt.2015.07.066] [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: 11/26/2022]
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Martin C, Dolmazon E, Moylan K, Fowley C, McHale AP, Callan JF, Callan B. A charge neutral, size tuneable polymersome capable of high biological encapsulation efficiency and cell permeation. Int J Pharm 2015; 481:1-8. [DOI: 10.1016/j.ijpharm.2014.12.061] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 12/19/2014] [Accepted: 12/26/2014] [Indexed: 11/30/2022]
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33
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Costley D, Mc Ewan C, Fowley C, McHale AP, Atchison J, Nomikou N, Callan JF. Treating cancer with sonodynamic therapy: A review. Int J Hyperthermia 2015; 31:107-17. [DOI: 10.3109/02656736.2014.992484] [Citation(s) in RCA: 170] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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34
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Fowley C, McHale AP, McCaughan B, Fraix A, Sortino S, Callan JF. Carbon quantum dot–NO photoreleaser nanohybrids for two-photon phototherapy of hypoxic tumors. Chem Commun (Camb) 2015; 51:81-4. [DOI: 10.1039/c4cc07827f] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Carbon quantum dots conjugated with a NO photodonor reduce tumor volume in mice bearing human xenograft BXPc-3 pancreatic tumors upon two-photon excitation with NIR light.
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Affiliation(s)
- Colin Fowley
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - Anthony P. McHale
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | | | - Aurore Fraix
- Laboratory of Photochemistry
- Department of Drug Sciences
- University of Catania
- I-95125 Catania
- Italy
| | - Salvatore Sortino
- Laboratory of Photochemistry
- Department of Drug Sciences
- University of Catania
- I-95125 Catania
- Italy
| | - John F. Callan
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
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35
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Atchison J, Kamila S, McEwan C, Nesbitt H, Davis J, Fowley C, Callan B, McHale AP, Callan JF. Modulation of ROS production in photodynamic therapy using a pH controlled photoinduced electron transfer (PET) based sensitiser. Chem Commun (Camb) 2015; 51:16832-5. [DOI: 10.1039/c5cc07022h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Compound 4 has been developed as a pH dependent sensitiser for use in photodynamic therapy.
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Affiliation(s)
- Jordan Atchison
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - Sukanta Kamila
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - Conor McEwan
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - Heather Nesbitt
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - James Davis
- Engineering Research Institute
- University of Ulster
- Jordanstown
- UK
| | - Colin Fowley
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - Bridgeen Callan
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - Anthony P. McHale
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
| | - John F. Callan
- Biomedical Sciences Research Institute
- University of Ulster
- Coleraine
- UK
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36
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McEwan C, Fowley C, Nomikou N, McCaughan B, McHale AP, Callan JF. Polymeric microbubbles as delivery vehicles for sensitizers in sonodynamic therapy. Langmuir 2014; 30:14926-14930. [PMID: 25409533 DOI: 10.1021/la503929c] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Microbubbles (MBs) have recently emerged as promising delivery vehicles for sensitizer drugs in sonodynamic therapy (SDT). The ability to selectively destroy the MB and activate the sensitizer using an external ultrasound trigger could provide a minimally invasive and highly targeted therapy. While lipid MBs have been approved for use as contrast agents in diagnostic ultrasound, the attachment of sensitizer drugs to their surface results in a significant reduction in particle stability. In this Article, we prepare both lipid and polymer (PLGA) MBs with rose bengal attached to their surface and demonstrate that PLGA MB conjugates are significantly more stable than their lipid counterparts. In addition, the improved stability offered by the PLGA shell does not hinder their selective destruction using therapeutically acceptable ultrasound intensities. Furthermore, we demonstrate that treatment of ectopic human tumors (BxPC-3) in mice with the PLGA MB-rose bengal conjugate and ultrasound reduced tumor volume by 34% 4 days after treatment while tumors treated with the conjugate alone increased in volume by 48% over the same time period. Therefore, PLGA MBs may offer a more stable alternative to lipid MBs for the site specific delivery of sensitizers in SDT.
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Affiliation(s)
- Conor McEwan
- Biomedical Sciences Research Institute, University of Ulster , Coleraine, Northern Ireland BT52 1SA, United Kingdom
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37
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Feichtinger GA, Hofmann AT, Slezak P, Schuetzenberger S, Kaipel M, Schwartz E, Neef A, Nomikou N, Nau T, van Griensven M, McHale AP, Redl H. Sonoporation increases therapeutic efficacy of inducible and constitutive BMP2/7 in vivo gene delivery. Hum Gene Ther Methods 2013; 25:57-71. [PMID: 24164605 DOI: 10.1089/hgtb.2013.113] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
An ideal novel treatment for bone defects should provide regeneration without autologous or allogenous grafting, exogenous cells, growth factors, or biomaterials while ensuring spatial and temporal control as well as safety. Therefore, a novel osteoinductive nonviral in vivo gene therapy approach using sonoporation was investigated in ectopic and orthotopic models. Constitutive or regulated, doxycycline-inducible, bone morphogenetic protein 2 and 7 coexpression plasmids were repeatedly applied for 5 days. Ectopic and orthotopic gene transfer efficacy was monitored by coapplication of a luciferase plasmid and bioluminescence imaging. Orthotopic plasmid DNA distribution was investigated using a novel plasmid-labeling method. Luciferase imaging demonstrated an increased trend (61% vs. 100%) of gene transfer efficacy, and micro-computed tomography evaluation showed significantly enhanced frequency of ectopic bone formation for sonoporation compared with passive gene delivery (46% vs. 100%) dependent on applied ultrasound power. Bone formation by the inducible system (83%) was stringently controlled by doxycycline in vivo, and no ectopic bone formation was observed without induction or with passive gene transfer without sonoporation. Orthotopic evaluation in a rat femur segmental defect model demonstrated an increased trend of gene transfer efficacy using sonoporation. Investigation of DNA distribution demonstrated extensive binding of plasmid DNA to bone tissue. Sonoporated animals displayed a potentially increased union rate (33%) without extensive callus formation or heterotopic ossification. We conclude that sonoporation of BMP2/7 coexpression plasmids is a feasible, minimally invasive method for osteoinduction and that improvement of bone regeneration by sonoporative gene delivery is superior to passive gene delivery.
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Affiliation(s)
- Georg A Feichtinger
- 1 Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center, Austrian Cluster for Tissue Regeneration, European Institute of Excellence on Tissue Engineering and Regenerative Medicine Research (Expertissues EEIG) , Vienna-Branch, 1200 Vienna, Austria
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38
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Nomikou N, Feichtinger GA, Redl H, McHale AP. Ultrasound-mediated gene transfer (sonoporation) in fibrin-based matrices: potential for use in tissue regeneration. J Tissue Eng Regen Med 2013; 10:29-39. [PMID: 23596105 DOI: 10.1002/term.1730] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 12/19/2012] [Accepted: 01/29/2013] [Indexed: 12/16/2022]
Abstract
It has been suggested that gene transfer into donor cells is an efficient and practical means of locally supplying requisite growth factors for applications in tissue regeneration. Here we describe, for the first time, an ultrasound-mediated system that can non-invasively facilitate gene transfer into cells entrapped within fibrin-based matrices. Since ultrasound-mediated gene transfer is enhanced using microbubbles, we compared the efficacy of neutral and cationic forms of these reagents on the ultrasound-stimulated gene transfer process in gel matrices. In doing so we demonstrated the beneficial effects associated with the use of cationic microbubble preparations that interact directly with cells and nucleic acid within matrices. In some cases, gene expression was increased two-fold in gel matrices when cationic microbubbles were compared with neutral microbubbles. In addition, incorporating collagen into fibrin gels yielded a 25-fold increase in gene expression after application of ultrasound to microbubble-containing matrices. We suggest that this novel system may facilitate non-invasive temporal and spatial control of gene transfer in gel-based matrices for the purposes of tissue regeneration.
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Affiliation(s)
| | - Georg A Feichtinger
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Centre, Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Heinz Redl
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Centre, Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Anthony P McHale
- Department of Pharmacy and Pharmaceutical Sciences, University of Ulster, Northern Ireland
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Fowley C, Nomikou N, McHale AP, McCaughan B, Callan JF. Extending the tissue penetration capability of conventional photosensitisers: a carbon quantum dot–protoporphyrin IX conjugate for use in two-photon excited photodynamic therapy. Chem Commun (Camb) 2013; 49:8934-6. [DOI: 10.1039/c3cc45181j] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Nomikou N, McHale AP. Microbubble-enhanced ultrasound-mediated gene transfer--towards the development of targeted gene therapy for cancer. Int J Hyperthermia 2012; 28:300-10. [PMID: 22621732 DOI: 10.3109/02656736.2012.659235] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Ultrasound-mediated gene transfer is emerging as a possible alternative to viral gene transfer, and pre-clinical data suggest that it may play a significant role in gene therapy-based approaches to the treatment of disease. As an extracorporeal stimulus, ultrasound can non-invasively and transiently compromise cell membrane permeability (sonoporation), thereby offering the promise of delivering either genes or oligonucleotide-based therapeutics to cells and tissues in a site-specific manner. The membrane-permeabilising effects of ultrasound can be greatly enhanced using microbubble preparations, many of which have, in the past, found application as ultrasound contrast agents. Because these ultrasound-responsive agents are highly amenable to surface modification it has been suggested that they may be exploited as ultrasound-responsive nucleic acid delivery vehicles. In this article we seek to explore the potential role ultrasound, in combination with microbubble-based agents, may play in providing site-specific gene therapy-based approaches for the treatment of cancer.
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Affiliation(s)
- Nikolitsa Nomikou
- Department of Pharmacy and Pharmaceutical Sciences, University of Ulster, Coleraine, County Derry, UK
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41
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Dwivedi A, Nomikou N, Nigam PS, McHale AP. The effects of microencapsulated Lactobacillus casei on tumour cell growth: In vitro and in vivo studies. Int J Med Microbiol 2012; 302:293-9. [PMID: 23072864 DOI: 10.1016/j.ijmm.2012.09.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 08/27/2012] [Accepted: 09/02/2012] [Indexed: 01/02/2023] Open
Abstract
It has been known for some time that the micro-milieu of solid tumours provides an ideal environment for growth of facultative and strictly anaerobic bacteria, and it has been shown that certain species including Lactobacillus and Clostridium can colonise those environments leading to regression of tumour growth. Such observations have given rise to the concept of bacteriolytic therapy where live microorganisms might be employed to colonise the tumour and exert a tumorolytic effect. In choosing such an approach, it would be advantageous to exploit a relatively non-pathogenic strain and provide some form of containment that would enable site-specific injection and minimise dispersion of the microorganism throughout the host. In testing the feasibility of such an approach, we prepared microencapsulated formulations of Lactobacillus casei NCDO 161 and demonstrated that conditioned extra-capsular culture media were toxic to tumour cells in vitro. We further investigated the effects of the microencapsulated formulations on tumour growth in vivo following direct intra-tumoural injection. The study demonstrates significant inhibition of tumour growth in vivo by these formulations and suggests potential therapeutic benefit of this approach in the treatment of solid tumours.
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Affiliation(s)
- Anupma Dwivedi
- School of Pharmacy, University of Ulster, Cromore Rd., Coleraine, Co. Derry BT52 1SA, Northern Ireland, United Kingdom
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42
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Nomikou N, Sterrett C, Arthur C, McCaughan B, Callan JF, McHale AP. The Effects of Ultrasound and Light on Indocyanine-Green-Treated Tumour Cells and Tissues. ChemMedChem 2012; 7:1465-71. [DOI: 10.1002/cmdc.201200233] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Revised: 06/05/2012] [Indexed: 11/08/2022]
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43
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Nomikou N, Tiwari P, Trehan T, Gulati K, McHale AP. Studies on neutral, cationic and biotinylated cationic microbubbles in enhancing ultrasound-mediated gene delivery in vitro and in vivo. Acta Biomater 2012; 8:1273-80. [PMID: 21958669 DOI: 10.1016/j.actbio.2011.09.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Revised: 08/22/2011] [Accepted: 09/07/2011] [Indexed: 11/17/2022]
Abstract
Ultrasound-mediated gene transfer is emerging as a practical means of facilitating targeted gene expression and is significantly enhanced in the presence of exogenously added microbubbles. This study explores the influence of microbubble surface modifications on their interaction with plasmid DNA and target cells, and the functional consequences of those interactions in terms of ultrasound-mediated gene transfer. Polyethylene glycol-stabilized, lipid-shelled microbubbles with neutral (SDM201), cationic (SDM202) and biotinylated cationic (SDM302) surfaces were compared in terms of their abilities to interact with a luciferase-encoding reporter plasmid DNA and with target cells in vitro. The results demonstrate that the biotinylated cationic microbubble>cationic microbubble>neutral microbubble, in terms of their abilities to interact with target cells and to enhance ultrasound-mediated gene transfer, particularly at low microbubble concentration. The presence of a net positive charge on both cationic microbubbles promoted the formation of microbubble-nucleic acid complexes, although preformation of the complexes prior to addition to target cells inhibited the interaction between the microbubbles and target cells in vitro. The impact of these findings on potential in vitro or ex vivo therapeutic applications of microbubble-enhanced ultrasound-mediated gene transfer is discussed. All three microbubble preparations could be used to facilitate gene transfer in vivo and the potential advantages associated with the use of the cationic microbubbles for targeted gene delivery are discussed.
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44
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Nomikou N, Fowley C, Byrne NM, McCaughan B, McHale AP, Callan JF. Microbubble–sonosensitiser conjugates as therapeutics in sonodynamic therapy. Chem Commun (Camb) 2012; 48:8332-4. [DOI: 10.1039/c2cc33913g] [Citation(s) in RCA: 54] [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: 11/21/2022]
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45
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Fowley C, Nomikou N, McHale AP, McCarron PA, McCaughan B, Callan JF. Water soluble quantum dots as hydrophilic carriers and two-photon excited energy donors in photodynamic therapy. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm00096b] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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McCaughan B, Rouanet C, Fowley C, Nomikou N, McHale AP, McCarron PA, Callan JF. Enhanced ROS production and cell death through combined photo- and sono-activation of conventional photosensitising drugs. Bioorg Med Chem Lett 2011; 21:5750-2. [DOI: 10.1016/j.bmcl.2011.08.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 08/01/2011] [Accepted: 08/02/2011] [Indexed: 11/16/2022]
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47
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Nomikou N, Li YS, McHale AP. Ultrasound-enhanced drug dispersion through solid tumours and its possible role in aiding ultrasound-targeted cancer chemotherapy. Cancer Lett 2010; 288:94-8. [DOI: 10.1016/j.canlet.2009.06.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2009] [Revised: 06/23/2009] [Accepted: 06/24/2009] [Indexed: 10/20/2022]
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48
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Li YS, Davidson E, Reid CN, McHale AP. Optimising ultrasound-mediated gene transfer (sonoporation) in vitro and prolonged expression of a transgene in vivo: potential applications for gene therapy of cancer. Cancer Lett 2008; 273:62-9. [PMID: 18829156 DOI: 10.1016/j.canlet.2008.07.030] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2008] [Revised: 05/12/2008] [Accepted: 07/24/2008] [Indexed: 11/24/2022]
Abstract
Therapeutic approaches using gene-based medicines promise alternatives or adjuncts to conventional cancer treatment. Because of its non-invasive nature, ultrasound, as a membrane-permeabilising stimulus has the potential to be highly competitive with viral gene delivery and existing non-viral alternatives. In optimising ultrasound-mediated, microbubble-assisted (MB101) gene tranfection in vitro, we demonstrate efficiencies of up to 18% using ultrasound at 1 MHz at a duty cycle of 25% at intensities ranging from 1 to 4 W cm(-2). Using ultrasound-mediated transfection together with an episomal plasmid-based gene expression system, we demonstrate prolonged functional gene expression of luciferase in mouse hind leg muscle and in tumours in vivo.
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Affiliation(s)
- Ying Suet Li
- School of Biomedical Sciences, University of Ulster, Cromore Road, Coleraine, Co. Derry, BT 52 1SA, Northern Ireland, United Kingdom
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49
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Li YS, Reid CN, McHale AP. Enhancing ultrasound-mediated cell membrane permeabilisation (sonoporation) using a high frequency pulse regime and implications for ultrasound-aided cancer chemotherapy. Cancer Lett 2008; 266:156-62. [PMID: 18367324 DOI: 10.1016/j.canlet.2008.02.041] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2007] [Revised: 02/18/2008] [Accepted: 02/19/2008] [Indexed: 10/22/2022]
Abstract
Delivering ultrasound to HeLa cells at 1MHz using a high frequency pulse regime (40kHz) and at a maximum energy density of 270Jcm(-2) resulted in significant cell membrane permeabilisation. Using FITC-dextran as a fluorogenic marker, optimally up to 64% of treated populations were permeabilised with cell viability remaining above 80%. Although cell membrane permeabilisation was observed in the presence of the microbubble-based ultrasound contrast agent, SonoVue, cell viability was severely compromised. Using the high frequency pulse regime in the absence of microbubbles, the LD50 of the cancer chemotherapeutic agent, camptothecin, was reduced from 58 to 18nM.
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Affiliation(s)
- Ying Suet Li
- School of Biomedical Sciences, University of Ulster, Cromore Road, Coleraine, Co. Derry BT52 1SA, Northern Ireland, United Kingdom
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50
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Nomikou N, McHale AP. Electro-biosorptive accumulation for use in enhanced detection of fluorogenic tracers and the removal of toxic entities from dilute solutions. Biotechnol Lett 2007; 29:561-7. [PMID: 17242852 DOI: 10.1007/s10529-006-9286-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2006] [Revised: 12/04/2006] [Accepted: 12/04/2006] [Indexed: 11/26/2022]
Abstract
An accumulating process based on electric field-assisted biosorption is described to facilitate the accumulation and enhanced detection of organic fluorogenic marker species in aqueous solution. Fluorescein was detected at concentrations as low as 0.6 microg l(-1). Using a mammalian cell-based bioassay, we demonstrate the use of the system to remove the toxic effects of species such as ethidium bromide and doxorubicin from complex solutions such as tissue culture medium. The use of such a system for the detection and removal of trace contaminants is discussed.
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Affiliation(s)
- Nikolitsa Nomikou
- School of Biomedical Sciences, University of Ulster, Cromore Rd., Coleraine, Co Derry, Northern Ireland, UK
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