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Ghosn M, Elsakka AS, Petre EN, Cheleuitte-Nieves C, Tammela T, Monette S, Ziv E, Schachtschneider KM, Srimathveeravalli G, Yarmohammadi H, Edward Boas F, Solomon SB. Induction and preliminary characterization of neoplastic pulmonary nodules in a transgenic pig model. Lung Cancer 2023; 178:157-165. [PMID: 36868176 PMCID: PMC10538441 DOI: 10.1016/j.lungcan.2023.02.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 01/09/2023] [Accepted: 02/16/2023] [Indexed: 02/25/2023]
Abstract
OBJECTIVES Lung cancer models in large animals are lacking. Oncopigs are transgenic pigs that carry both KRASG12D and TP53R167H Cre-inducible mutations. This study aimed to develop and histologically characterize a swine model of lung cancer that could serve for preclinical studies evaluating locoregional therapies. MATERIALS AND METHODS In two Oncopigs, an adenoviral vector encoding the Cre-recombinase gene (AdCre) was injected endovascularly through the pulmonary arteries or inferior vena cava. In two other Oncopigs, a lung biopsy was performed and incubated with AdCre, before reinjecting the mixture into the lungs percutaneously. Animals were clinically and biologically (complete blood count, liver enzymes and lipasemia) monitored. Obtained tumors were characterized on computed tomography (CT) and on pathology and immunohistochemistry (IHC). RESULTS Neoplastic lung nodules developed following 1 (1/10, 10%) endovascular inoculation, and 2 (2/6, 33%) percutaneous inoculations. All lung tumors were visible at the 1-week CT, and appeared as well-circumscribed solid nodules, with a median longest diameter of 14 mm (range: 5-27 mm). Only one complication occurred: an extravasation of the mixture into the thoracic wall during a percutaneous injection that resulted in a thoracic wall tumor. Pigs remained clinically healthy during the entire follow-up (14-21 days). On histology, tumors consisted of inflammatory undifferentiated neoplasms composed of atypical spindle and epithelioid cells and/or a fibrovascular stroma and abundant mixed leukocytic infiltrate. On IHC, atypical cells diffusely displayed expression of vimentin and some showed expression of CK WSS and CK 8/18. The tumor microenvironment contained abundant IBA1 + macrophages and giant cells, CD3 + T cells, and CD31 + blood vessels. CONCLUSION Tumors induced in the lungs of Oncopigs are fast growing poorly differentiated neoplasms associated with a marked inflammatory reaction that can be easily and safely induced at site specific locations. This large animal model might be suitable for interventional and surgical therapies of lung cancer.
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Affiliation(s)
- Mario Ghosn
- Department of Interventional Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, USA
| | - Ahmed S Elsakka
- Department of Interventional Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, USA
| | - Elena N Petre
- Department of Interventional Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, USA
| | - Christopher Cheleuitte-Nieves
- Center of Comparative Medicine and Pathology, Memorial Sloan Kettering Cancer Center and Weill Cornell Medicine, New York, NY, USA
| | - Tuomas Tammela
- Cancer Biology and Genetics Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Sebastien Monette
- Laboratory of Comparative Pathology, Memorial Sloan Kettering Cancer Center, The Rockefeller University, Weill Cornell Medicine, New York, NY, USA
| | - Etay Ziv
- Department of Interventional Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, USA
| | - Kyle M Schachtschneider
- Department of Radiology, University of Illinois at Chicago, Chicago, IL, USA; Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, Chicago, IL, USA; National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Govind Srimathveeravalli
- Department of Mechanical Engineering, Institute for Applied Life Sciences, University of Massachusetts Amherst, Life Sciences Laboratories, 240 Thatcher Road Amherst, MA, USA
| | - Hooman Yarmohammadi
- Department of Interventional Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, USA
| | - F Edward Boas
- Department of Radiology, City of Hope Cancer Center, 1500 East Duarte Rd., Duarte, CA, USA
| | - Stephen B Solomon
- Department of Interventional Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, USA.
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Wang Y, Abenojar EC, Wang J, de Leon AC, Tavri S, Wang X, Gopalakrishnan R, Walker E, MacLennan GT, Giles A, Czarnota GJ, Basilion JP, Exner AA. Development of a novel castration-resistant orthotopic prostate cancer model in New Zealand White rabbit. Prostate 2022; 82:695-705. [PMID: 35167141 PMCID: PMC8994852 DOI: 10.1002/pros.24314] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 01/12/2022] [Accepted: 01/24/2022] [Indexed: 01/15/2023]
Abstract
BACKGROUND Prostate cancer (PCa) models in mice and rats are limited by their size and lack of a clearly delineated or easily accessible prostate gland. The canine PCa model is currently the only large animal model which can be used to test new preclinical interventions but is costly and availability is sparse. As an alternative, we developed an orthotopic human prostate tumor model in an immunosuppressed New Zealand White rabbit. Rabbits are phylogenetically closer to humans, their prostate gland is anatomically similar, and its size allows for clinically-relevant testing of interventions. METHODS Rabbits were immunosuppressed via injection of cyclosporine. Human PC3pipGFP PCa cells were injected into the prostate via either (a) laparotomy or (b) transabdominal ultrasound (US) guided injection. Tumor growth was monitored using US and magnetic resonance imaging (MRI). Contrast-enhanced ultrasound (CEUS) imaging using nanobubbles and Lumason microbubbles was also performed to examine imaging features and determine the optimal contrast dose required for enhanced visualization of the tumor. Ex vivo fluorescence imaging, histopathology, and immunohistochemistry analyses of the collected tissues were performed to validate tumor morphology and prostate-specific membrane antigen (PSMA) expression. RESULTS Immunosuppression and tumor growth were, in general, well-tolerated by the rabbits. Fourteen out of 20 rabbits, with an average age of 8 months, successfully grew detectable tumors from Day 14 onwards after cell injection. The tumor growth rate was 39 ± 25 mm2 per week. CEUS and MRI of tumors appear hypoechoic and T2 hypointense, respectively, relative to normal prostate tissue. Minimally invasive US-guided tumor cell injection proved to be a better method compared to laparotomy due to the shorter recovery time required for the rabbits following injection. Among the rabbits that grew tumors, seven had tumors both inside and outside the prostate, three had tumors only inside the prostate, and four had tumors exclusively outside of the prostate. All tumors expressed the PSMA receptor. CONCLUSIONS We have established, for the first time, an orthotopic PCa rabbit model via percutaneous US-guided tumor cell inoculation. This animal model is an attractive, clinically relevant intermediate step to assess preclinical diagnostic and therapeutic compounds.
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Affiliation(s)
- Yu Wang
- Department of Radiology, Case Western Reserve University, Cleveland, Ohio, USA
- Department of Ultrasound, Peking University People’s Hospital, Beijing, China
| | - Eric C. Abenojar
- Department of Radiology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Jing Wang
- Department of Radiology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Al C. de Leon
- Department of Radiology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Sidhartha Tavri
- Department of Radiology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Xinning Wang
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio, USA
| | | | - Ethan Walker
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio, USA
| | - Gregory T. MacLennan
- Department of Pathology and Urology, University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland, Ohio, USA
| | - Anoja Giles
- Physical Sciences, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Gregory J. Czarnota
- Physical Sciences, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Department of Radiation Oncology and Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - James P. Basilion
- Department of Radiology, Case Western Reserve University, Cleveland, Ohio, USA
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio, USA
| | - Agata A. Exner
- Department of Radiology, Case Western Reserve University, Cleveland, Ohio, USA
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio, USA
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3
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Badea CT. Principles of Micro X-ray Computed Tomography. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00006-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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4
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Motooka Y, Fujino K, Gregor A, Bernards N, Chan H, Inage T, Ujiie H, Kato T, Kinoshita T, Ishiwata T, Suzuki M, Yasufuku K. Endobronchial Ultrasound-Guided Radiofrequency Ablation of Lung Tumors and Mediastinal Lymph Nodes: A Preclinical Study in Animal Lung Tumor and Mediastinal Adenopathy Models. Semin Thorac Cardiovasc Surg 2020; 32:570-578. [PMID: 32057971 DOI: 10.1053/j.semtcvs.2020.02.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 02/04/2020] [Indexed: 12/19/2022]
Abstract
Radiofrequency ablation (RFA) can be a therapeutic option in medically inoperable lung cancer patients. In this study, we evaluated a prototype bipolar RFA device applicator that can be deployed from a standard endobronchial ultrasound (EBUS) bronchoscope to determine feasibility and histopathological analysis in animal models. Rabbit lung cancers were created by transbronchial injection of VX2 rabbit cancer cells. Once the tumors were developed, they were ablated transpleurally, under EBUS guidance using the prototype RFA device. The animals were then sacrificed for specimen resection. Pig inflammatory lung pseudo-tumors and lymphadenopathy were created by transbronchial injection of a talc paste and ablated transbronchially under EBUS guidance. Pigs were evaluated at 5 days, 2 weeks, and 4 weeks following ablation by bronchoscopy and cone beam computed tomography before necropsy. Nicotinamide adenine dinucleotide hydrogen diaphorase staining was employed to measure the ablation area. Twenty-four VX2 rabbit tumors were ablated. The total ablated area ranged from 0.6 to 3.0 cm2 (mean: 1.8 cm2), corresponding to a total energy range of 1 to 6 kJ. Six pig lung pseudo-tumors and 5 mediastinal lymph nodes were ablated. Adjacent airway ulceration was observed in 3 ablations of lymph nodes. These airway complications resolved within 4 weeks of RFA without any treatment. There was no hemoptysis, air embolism, respiratory distress, or other serious complication noted. In these 2 animal models, we provide evidence that EBUS-guided bipolar RFA is feasible and histopathology shows that can ablate lung tumors and mediastinal lymph nodes under real-time ultrasound guidance.
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Affiliation(s)
- Yamato Motooka
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada; Department of Thoracic Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Kosuke Fujino
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada; Department of Thoracic Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Alexander Gregor
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Nicholas Bernards
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Harley Chan
- TECHNA Institute for the Advancement of Technology for Health, University Health Network, Toronto, Ontario, Canada
| | - Terunaga Inage
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Hideki Ujiie
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Tatsuya Kato
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Tomonari Kinoshita
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Tsukasa Ishiwata
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Makoto Suzuki
- Department of Thoracic Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kazuhiro Yasufuku
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada; TECHNA Institute for the Advancement of Technology for Health, University Health Network, Toronto, Ontario, Canada
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Gregor A, Fujino K, Bernards N, Kinoshita T, Motooka Y, Inage T, Ishiwata T, Chen Z, Ujiie H, Lee CY, Yasufuku K. Rabbit VX2 lung tumor models can form early nodal metastases. World J Surg Oncol 2019; 17:231. [PMID: 31884965 PMCID: PMC6936139 DOI: 10.1186/s12957-019-1774-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 12/20/2019] [Indexed: 12/24/2022] Open
Abstract
Background The rabbit squamous cell cancer line, VX2, has been used to generate various tumor models in rabbits. It is notable for its ability to generate nodal metastases. However, the timing and extent of nodal metastases vary by primary inoculation site and methodology. The development of metastases specifically in lung cancer models has not been well-described. We sought to characterize the generation of nodal metastases in rabbit transbronchial VX2 lung tumor models. Methods Rabbit VX2 lung tumor models were created in the right lung via transbronchial injection and serially imaged by computed tomography. Rabbits (n = 15) were sacrificed from between 5 and 24 days post-inoculation for collection of the ipsilateral and contralateral paratracheal lymph nodes. These underwent histopathological evaluation for metastases using hematoxylin and eosin as well as cytokeratin AE1/AE3 immunohistochemical staining. Results Nodal metastases were detectable as early as 1 week after inoculation but were more prevalent with longer inoculation; all rabbits at > 2 weeks post-inoculation had nodal metastases. Contralateral metastases were in general seen later than ipsilateral metastases. Lymph node volume did not predict the likelihood of nodal metastases (p = 0.4 and p = 0.07 for ipsilateral and contralateral nodal metastases, respectively), but primary tumor volume was significantly associated with the likelihood of nodal metastases (p = 0.001 and p = 0.005 for ipsilateral and contralateral nodal metastases, respectively). Ipsilateral metastases were detectable at a tumor diameter of 1 cm; contralateral metastases were more variable but in general required a tumor diameter of 2 cm. Conclusions Rabbit transbronchial VX2 lung tumor models generate nodal metastases relatively early after inoculation. These results suggest such models may be valuable tools in the investigation of novel therapeutic modalities relevant for the treatment of both early-stage and locally advanced lung cancer.
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Affiliation(s)
- Alexander Gregor
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, 200 Elizabeth St, 9N-957, Toronto, ON, M5G2C4, Canada
| | - Kosuke Fujino
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, 200 Elizabeth St, 9N-957, Toronto, ON, M5G2C4, Canada
| | - Nicholas Bernards
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, 200 Elizabeth St, 9N-957, Toronto, ON, M5G2C4, Canada
| | - Tomonari Kinoshita
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, 200 Elizabeth St, 9N-957, Toronto, ON, M5G2C4, Canada
| | - Yamato Motooka
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, 200 Elizabeth St, 9N-957, Toronto, ON, M5G2C4, Canada
| | - Terunaga Inage
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, 200 Elizabeth St, 9N-957, Toronto, ON, M5G2C4, Canada
| | - Tsukasa Ishiwata
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, 200 Elizabeth St, 9N-957, Toronto, ON, M5G2C4, Canada
| | - Zhenchian Chen
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, 200 Elizabeth St, 9N-957, Toronto, ON, M5G2C4, Canada
| | - Hideki Ujiie
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, 200 Elizabeth St, 9N-957, Toronto, ON, M5G2C4, Canada
| | - Chang Young Lee
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, 200 Elizabeth St, 9N-957, Toronto, ON, M5G2C4, Canada
| | - Kazuhiro Yasufuku
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, 200 Elizabeth St, 9N-957, Toronto, ON, M5G2C4, Canada.
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Keller S, Chapiro J, Brangsch J, Reimann C, Collettini F, Sack I, Savic LJ, Hamm B, Goldberg SN, Makowski M. Quantitative MRI for Assessment of Treatment Outcomes in a Rabbit VX2 Hepatic Tumor Model. J Magn Reson Imaging 2019; 52:668-685. [PMID: 31713973 DOI: 10.1002/jmri.26968] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/24/2019] [Accepted: 09/25/2019] [Indexed: 12/24/2022] Open
Abstract
Globally, primary and secondary liver cancer is one of the most common cancer types, accounting 8.2% of deaths worldwide in 2018. One of the key strategies to improve the patient's prognosis is the early diagnosis, when liver function is still preserved. In hepatocellular carcinoma (HCC), the typical wash-in/wash-out pattern in conventional magnetic resonance imaging (MRI) reaches a sensitivity of 60% and specificity of 96-100%. However, in recent years functional MRI sequences such as hepatocellular-specific gadolinium-based dynamic-contrast enhanced MRI, diffusion-weighted imaging (DWI), and magnetic resonance spectroscopy (MRS) have been demonstrated to improve the evaluation of treatment success and thus the therapeutic decision-making and the patient's outcome. In the preclinical research setting, the VX2 liver rabbit tumor, which once originated from a virus-induced anaplastic squamous cell carcinoma, has played a longstanding role in experimental interventional oncology. Especially the high tumor vascularity allows assessing the treatment response of locoregional interventions such as radiofrequency ablation (RFA) and transcatheter arterial embolization (TACE). Functional MRI has been used to monitor the tumor growth and viability following interventional treatment. Besides promising results, a comprehensive overview of functional MRI sequences used so far in different treatment setting is lacking, thus lowering the comparability of study results. This review offers a comprehensive overview of study protocols, results, and limitations of quantitative MRI sequences applied to evaluate the treatment outcome of VX2 hepatic tumor models, thus generating a unique basis for future MRI studies and potential translation into the clinical setting. Level of Evidence: 2 Technical Efficacy: Stage 1 J. MAGN. RESON. IMAGING 2019. J. Magn. Reson. Imaging 2020;52:668-685.
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Affiliation(s)
- Sarah Keller
- Department of Radiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Julius Chapiro
- Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Julia Brangsch
- Department of Radiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Carolin Reimann
- Department of Radiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Federico Collettini
- Department of Radiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Ingolf Sack
- Department of Radiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Lynn Jeanette Savic
- Department of Radiology, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Bernd Hamm
- Department of Radiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Shraga Nahum Goldberg
- Department of Radiology, Hebrew University Hadassah Medical School, Jerusalem, Israel
| | - Marcus Makowski
- Department of Radiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
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Kinoshita T, Effat A, Gregor A, Inage T, Ishiwata T, Motooka Y, Ujiie H, Wilson BC, Zheng G, Weersink R, Asamura H, Yasufuku K. A Novel Laser Fiberscope for Simultaneous Imaging and Phototherapy of Peripheral Lung Cancer. Chest 2019; 156:571-578. [DOI: 10.1016/j.chest.2019.04.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 03/02/2019] [Accepted: 04/02/2019] [Indexed: 11/17/2022] Open
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Hirohashi K, Anayama T, Wada H, Nakajima T, Kato T, Keshavjee S, Orihashi K, Yasufuku K. Lung cancer photothermal ablation by low-power near-infrared laser and topical injection of indocyanine green. Interact Cardiovasc Thorac Surg 2019; 29:693-698. [DOI: 10.1093/icvts/ivz158] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 05/23/2019] [Accepted: 06/01/2019] [Indexed: 12/13/2022] Open
Abstract
Abstract
OBJECTIVES
Surgical treatment is the gold standard for the treatment of early-stage non-small-cell lung cancer. However, minimally invasive tumour ablation can be an alternative treatment for patients not eligible for surgery due to comorbidities. The aim of this study was to evaluate the efficacy of photothermal ablation therapy using low-power near-infrared laser and topical injection of indocyanine green (ICG), a photosensitizer, in a preclinical study using a rabbit VX2 lung cancer model.
METHODS
Six New Zealand white rabbits were used. Five hundred microlitres of a suspension containing 0.5 × 107 VX2 cancer cells with growth factor-reduced Matrigel was inoculated into the right lung using an ultrathin bronchoscope. Three rabbits were treated with laser ablation therapy with topical injection of ICG, whereas another 3 rabbits were treated with laser ablation alone. All tumours were irradiated with a laser with 500-mW output at 808 nm for 15 min. The tumours were examined histopathologically to assess the state of ablation.
RESULTS
The maximum tumour surface temperatures in rabbits treated using ICG/laser and laser alone were higher than 58°C and lower than 40°C, respectively. The ablated areas in the rabbits treated with ICG/laser were significantly larger than those in the rabbits treated with laser alone (0.49 ± 0.27 vs 0.02 ± 0.002 cm2, respectively) (P < 0.05).
CONCLUSIONS
The photothermal treatment using the combination of low-power near-infrared laser and topical injection of ICG can ablate a larger tumour area than laser treatment alone.
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Affiliation(s)
- Kentaro Hirohashi
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada
- Department of Surgery, Kochi University, Kochi, Japan
| | - Takashi Anayama
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada
- Department of Surgery, Kochi University, Kochi, Japan
| | - Hironobu Wada
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Takahiro Nakajima
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Tatsuya Kato
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Shaf Keshavjee
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada
| | | | - Kazuhiro Yasufuku
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, University of Toronto, Toronto, ON, Canada
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Kinoshita T, Ujiie H, Chen J, Ding L, Chan H, Gregor A, Bernards N, McVeigh PZ, Fujino K, Lee CY, Motooka Y, Inage T, Valic MS, Effat A, Weersink R, Wilson BC, Zheng G, Asamura H, Yasufuku K. Evaluation of Novel Imaging Devices for Nanoparticle-Mediated Fluorescence-Guided Lung Tumor Therapy. Ann Thorac Surg 2019; 107:1613-1620. [DOI: 10.1016/j.athoracsur.2019.01.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 12/01/2018] [Accepted: 01/02/2019] [Indexed: 11/15/2022]
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10
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Vega JCDL, Esquinas PL, Rodríguez-Rodríguez C, Bokharaei M, Moskalev I, Liu D, Saatchi K, Häfeli UO. Radioembolization of Hepatocellular Carcinoma with Built-In Dosimetry: First in vivo Results with Uniformly-Sized, Biodegradable Microspheres Labeled with 188Re. Theranostics 2019; 9:868-883. [PMID: 30809314 PMCID: PMC6376476 DOI: 10.7150/thno.29381] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 01/02/2019] [Indexed: 12/28/2022] Open
Abstract
A common form of treatment for patients with hepatocellular carcinoma (HCC) is transarterial radioembolization (TARE) with non-degradable glass or resin microspheres (MS) labeled with 90Y (90Y-MS). To further simplify the dosimetry calculations in the clinical setting, to have more control over the particle size and to change the permanent embolization to a temporary one, we developed uniformly-sized, biodegradable 188Re-labeled MS (188Re-MS) as a new and easily imageable TARE agent. Methods: MS made of poly(L-lactic acid) were produced in a flow focusing microchip. The MS were labeled with 188Re using a customized kit. An orthotopic HCC animal model was developed in male Sprague Dawley rats by injecting N1-S1 cells directly into the liver using ultrasound guidance. A suspension of 188Re-MS was administered via hepatic intra-arterial catheterization 2 weeks post-inoculation of the N1-S1 cells. The rats were imaged by SPECT 1, 24, 48, and 72 h post-radioembolization. Results: The spherical 188Re-MS had a diameter of 41.8 ± 6.0 µm (CV = 14.5%). The site and the depth of the injection of N1-S1 cells were controlled by visualization of the liver in sonograms. Single 0.5 g tumors were grown in all rats. 188Re-MS accumulated in the liver with no deposition in the lungs. 188Re decays to stable 188Os by emission of β¯ particles with similar energy to those emitted by 90Y while simultaneously emitting γ photons, which were imaged directly by single photon computed tomography (SPECT). Using Monte Carlo methods, the dose to the tumors was calculated to be 3-6 times larger than to the healthy liver tissue. Conclusions:188Re-MS have the potential to become the next generation of β¯-emitting MS for TARE. Future work revolves around the investigation of the therapeutic potential of 188Re-MS in a large-scale, long-term preclinical study as well as the evaluation of the clinical outcomes of using 188Re-MS with different sizes, from 20 to 50 µm.
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Intraoperative Near-Infrared Fluorescence-Guided Peripheral Lung Tumor Localization in Rabbit Models. Ann Thorac Surg 2019; 107:248-256. [DOI: 10.1016/j.athoracsur.2018.08.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 08/08/2018] [Accepted: 08/13/2018] [Indexed: 11/20/2022]
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12
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Xu X, Zhang R, Liu F, Ping J, Wen X, Wang H, Wang K, Sun X, Zou H, Shen B, Wu L. 19F MRI in orthotopic cancer model via intratracheal administration of ανβ3-targeted perfluorocarbon nanoparticles. Nanomedicine (Lond) 2018; 13:2551-2562. [PMID: 30338723 DOI: 10.2217/nnm-2018-0051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Aim: To demonstrate the feasibility of intratracheal administration in orthotopic lung cancer model with 19F MRI. Materials & methods: αvβ3-integrin targeting ability of the perfluorocarbon (PFC) nanoparticles was tested. Orthotopic lung cancer model was established in rabbits under computed tomography guidance. αvβ3-targeted PFC nanoparticles were administrated intratracheally or intravenously, and 19F MRI was performed before and up to 24 h after administration. Results: The targeted PFC nanoparticles could bind with αvβ3-integrin. PFC concentrations in the tumors of intratracheal group after administration were significantly higher than intravenous group. Conclusion: Intratracheal administration of PFC nanoparticles was shown to be feasible and efficacious. 19F MRI with αvβ3-targeted PFC nanoparticles provided quantitative assessment of nanoparticles distribution and tumor angiogenesis.
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Affiliation(s)
- Xiuan Xu
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
- Department of Medical Imaging, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Ruixin Zhang
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Fang Liu
- Department of Medical Imaging, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Jiaqi Ping
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Xiaofei Wen
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Hongbin Wang
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Kai Wang
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Xilin Sun
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Hongyan Zou
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Baozhong Shen
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
| | - Lina Wu
- Molecular Imaging Research Center (MIRC), Harbin Medical University, Harbin, Heilongjiang, PR China
- TOF-PET/CT/MR center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, PR China
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13
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Wang L, Che K, Liu Z, Huang X, Xiang S, Zhu F, Yu Y. Establishment and evaluation of the VX2 orthotopic lung cancer rabbit model: a ultra-minimal invasive percutaneous puncture inoculation method. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2018; 22:291-300. [PMID: 29719451 PMCID: PMC5928342 DOI: 10.4196/kjpp.2018.22.3.291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 01/02/2018] [Accepted: 01/27/2018] [Indexed: 11/16/2022]
Abstract
The purpose of the present work is to establish an ultra-minimal invasive percutaneous puncture inoculation method for a VX2 orthotopic lung cancer rabbit model with fewer technical difficulties, lower mortality of rabbits, a higher success rate and a shorter operation time, to evaluate the growth, metastasis and apoptosis of tumor by CT scans, necropsy, histological examination, flow cytometry and immunohistochemistry. The average inoculation time was 10–15 min per rabbit. The tumor-bearing rate was 100%. More than 90% of the tumor-bearing rabbits showed local solitary tumor with 2–10 mm diameters after two weeks post-inoculation, and the rate of chest seeding was only 8.3% (2/24). The tumors diameters increased to 4–16 mm, and irregularly short thorns were observed 3 weeks after inoculation. Five weeks post-inoculation, the liquefaction necrosis and a cavity developed, and the size of tumor grew further. Before natural death, the CT images showed that the tumors spread to the chest. The flow cytometry and immunohistochemistry indicated that there was less apoptosis in VX2 orthotopic lung cancer rabbit model compared to chemotherapy drug treatment group. Minimal invasive percutaneous puncture inoculation is an easy, fast and accurate method to establish the VX2 orthotopic lung cancer rabbit model, an ideal in situ tumor model similar to human malignant tumor growth.
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Affiliation(s)
- Lijuan Wang
- Department of Pharmacy, Chongqing Engineering Research Center of Pharmaceutical Sciences, Chongqing Medical and Pharmaceutical College, Chongqing 401331, China.,Pharmacy College, Chongqing Medical University, Chongqing 400016, China
| | - Keke Che
- Department of Pharmacy, Chongqing General Hospital, Chongqing 400014, China
| | - Zhonghong Liu
- Pharmacy College, Chongqing Medical University, Chongqing 400016, China
| | - Xianlong Huang
- Radiology Department, Chongqing General Hospital, Chongqing 400014, China
| | - Shifeng Xiang
- Radiology Department, Chongqing General Hospital, Chongqing 400014, China
| | - Fei Zhu
- Pharmacy College, Chongqing Medical University, Chongqing 400016, China
| | - Yu Yu
- Pharmacy College, Chongqing Medical University, Chongqing 400016, China
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14
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Vanherp L, Poelmans J, Hillen A, Govaerts K, Belderbos S, Buelens T, Lagrou K, Himmelreich U, Vande Velde G. Bronchoscopic fibered confocal fluorescence microscopy for longitudinal in vivo assessment of pulmonary fungal infections in free-breathing mice. Sci Rep 2018; 8:3009. [PMID: 29445211 PMCID: PMC5813038 DOI: 10.1038/s41598-018-20545-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 01/21/2018] [Indexed: 11/12/2022] Open
Abstract
Respiratory diseases, such as pulmonary infections, are an important cause of morbidity and mortality worldwide. Preclinical studies often require invasive techniques to evaluate the extent of infection. Fibered confocal fluorescence microscopy (FCFM) is an emerging optical imaging technique that allows for real-time detection of fluorescently labeled cells within live animals, thereby bridging the gap between in vivo whole-body imaging methods and traditional histological examinations. Previously, the use of FCFM in preclinical lung research was limited to endpoint observations due to the invasive procedures required to access lungs. Here, we introduce a bronchoscopic FCFM approach that enabled in vivo visualization and morphological characterisation of fungal cells within lungs of mice suffering from pulmonary Aspergillus or Cryptococcus infections. The minimally invasive character of this approach allowed longitudinal monitoring of infection in free-breathing animals, thereby providing both visual and quantitative information on infection progression. Both the sensitivity and specificity of this technique were high during advanced stages of infection, allowing clear distinction between infected and non-infected animals. In conclusion, our study demonstrates the potential of this novel bronchoscopic FCFM approach to study pulmonary diseases, which can lead to novel insights in disease pathogenesis by allowing longitudinal in vivo microscopic examinations of the lungs.
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Affiliation(s)
- Liesbeth Vanherp
- Biomedical MRI unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Herestraat 49 O & N1 box 505, 3000, Leuven, Belgium
| | - Jennifer Poelmans
- Biomedical MRI unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Herestraat 49 O & N1 box 505, 3000, Leuven, Belgium
| | - Amy Hillen
- Biomedical MRI unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Herestraat 49 O & N1 box 505, 3000, Leuven, Belgium
| | - Kristof Govaerts
- Biomedical MRI unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Herestraat 49 O & N1 box 505, 3000, Leuven, Belgium
| | - Sarah Belderbos
- Biomedical MRI unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Herestraat 49 O & N1 box 505, 3000, Leuven, Belgium
| | - Tinne Buelens
- Biomedical MRI unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Herestraat 49 O & N1 box 505, 3000, Leuven, Belgium
| | - Katrien Lagrou
- Laboratory of Clinical Bacteriology and Mycology, Department of Microbiology and Immunology, KU Leuven, Herestraat 49 box 6711, 3000, Leuven, Belgium
| | - Uwe Himmelreich
- Biomedical MRI unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Herestraat 49 O & N1 box 505, 3000, Leuven, Belgium
| | - Greetje Vande Velde
- Biomedical MRI unit/MoSAIC, Department of Imaging and Pathology, KU Leuven, Herestraat 49 O & N1 box 505, 3000, Leuven, Belgium.
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15
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Kato T, Jin CS, Ujiie H, Lee D, Fujino K, Wada H, Hu HP, Weersink RA, Chen J, Kaji M, Kaga K, Matsui Y, Wilson BC, Zheng G, Yasufuku K. Nanoparticle targeted folate receptor 1-enhanced photodynamic therapy for lung cancer. Lung Cancer 2017; 113:59-68. [DOI: 10.1016/j.lungcan.2017.09.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 09/01/2017] [Accepted: 09/01/2017] [Indexed: 12/13/2022]
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Choi BH, Young HS, Quan YH, Rho J, Eo JS, Han KN, Choi YH, Hyun Koo K. Real-time computed tomography fluoroscopy-guided solitary lung tumor model in a rabbit. PLoS One 2017; 12:e0179220. [PMID: 28609443 PMCID: PMC5469482 DOI: 10.1371/journal.pone.0179220] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 05/25/2017] [Indexed: 01/22/2023] Open
Abstract
Preclinical studies of lung cancer require suitable large-animal models to allow evaluation and development of surgical and interventional techniques. We assessed the feasibility and safety of a novel rabbit lung cancer model of solitary tumors, in which real-time computed tomography fluoroscopy is used to guide inoculation of VX2 carcinoma single-cell suspensions. Thirty-eight rabbits were divided into four groups according to the volume of the VX2 tissue or cell suspension, the volume of lipiodol, the volume of Matrigel, and the injection needle size. The mixtures were percutaneously injected into rabbit lungs under real-time computed tomography fluoroscopy guidance. Two weeks later, VX2 lung carcinomas were confirmed via positron emission tomography/computed tomography, necropsy, and histology. Real-time computed tomography fluoroscopy allowed the precise inoculation of the tumor cell suspensions containing lipiodol, while the use of Matrigel and a small needle prevented leakage of the suspensions into the lung parenchyma. Solitary lung tumors were successfully established in rabbits (n = 22) inoculated with single-cell suspensions (150 μL), lipiodol (150 μL), and Matrigel (150 μL) using a 26-gauge needle. This combination was determined to be optimal. Pneumothorax was observed in only two of the 38 rabbits (5.3%), both of which survived to the end of the study without any intervention. Real-time computed tomography fluoroscopy-guided inoculation of VX2 single-cell suspensions with lipiodol and Matrigel using a small needle is an easy and safe method to establish solitary lung tumors in rabbits.
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Affiliation(s)
- Byeong Hyeon Choi
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul, Korea
- Department of Thoracic and Cardiovascular Surgery, Korea University Guro Hospital, College of Medicine, Korea University, Seoul, Korea
| | - Hwan Seok Young
- Department of Radiology, Korea University Guro Hospital, College of Medicine, Korea University, Seoul, Korea
| | - Yu Hua Quan
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul, Korea
- Department of Thoracic and Cardiovascular Surgery, Korea University Guro Hospital, College of Medicine, Korea University, Seoul, Korea
| | - Jiyun Rho
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul, Korea
- Department of Thoracic and Cardiovascular Surgery, Korea University Guro Hospital, College of Medicine, Korea University, Seoul, Korea
| | - Jae Seon Eo
- Department of Nuclear Medicine, Korea University Guro Hospital, College of Medicine, Korea University, Seoul, Korea
| | - Kook Nam Han
- Department of Thoracic and Cardiovascular Surgery, Korea University Guro Hospital, College of Medicine, Korea University, Seoul, Korea
| | - Young Ho Choi
- Department of Thoracic and Cardiovascular Surgery, Korea University Guro Hospital, College of Medicine, Korea University, Seoul, Korea
| | - Kim Hyun Koo
- Department of Biomedical Sciences, College of Medicine, Korea University, Seoul, Korea
- Department of Thoracic and Cardiovascular Surgery, Korea University Guro Hospital, College of Medicine, Korea University, Seoul, Korea
- * E-mail:
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17
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Yang Y, Wang F, Zheng K, Deng L, Yang L, Zhang N, Xu C, Ran H, Wang Z, Wang Z, Zheng Y. Injectable PLGA/Fe3O4 implants carrying cisplatin for synergistic magnetic hyperthermal ablation of rabbit VX2 tumor. PLoS One 2017; 12:e0177049. [PMID: 28472102 PMCID: PMC5417648 DOI: 10.1371/journal.pone.0177049] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 04/23/2017] [Indexed: 11/30/2022] Open
Abstract
Magnetic hyperthermia ablation has attracted wide attention in tumor therapy for its minimal invasion. Although the chemo-hyperthermal synergism has been proven to be effective in subcutaneously xenografted tumors of nude mice in our previous experiment, the occurrence of residual tumors due to incomplete ablation is more common in relatively larger and deeper-seated tumors in anti-tumor therapy. Thus, a larger tumor and larger animal model are needed for further study of the therapeutic efficacy. In this study, we tested the efficiency of this newly developed technique using a rabbit tumor model. Furthermore, we chose cisplatin (DDP), which has been confirmed with high efficiency in enhancing hyperthermia therapy as the chemotherapeutic drug for the synergistic magnetic hyperthermal ablation therapy of tumors. In vitro studies demonstrated that developed DDP-loaded magnetic implants (DDP/PLGA-Fe3O4) have great heating efficacy and the drug release can be significantly boosted by an external alternating magnetic field (AMF). In vivo studies showed that the phase-transitional DDP/PLGA-Fe3O4 materials that are ultrasound (US) and computerized tomography (CT) visible can be well confined in the tumor tissues after injection. When exposed to AMF, efficient hyperthermia was induced, which led to the cancer cells’ coagulative necrosis and accelerating release of the drug to kill residual tumors. Furthermore, an activated anti-tumor immune system can promote apoptosis of tumor cells. In conclusion, the DDP/PLGA-Fe3O4 implants can be used efficiently for the combined chemotherapy and magnetic-hyperthermia ablation of rabbit tumors.
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Affiliation(s)
- Yang Yang
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Fengjuan Wang
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Kaiyuan Zheng
- Department of Nephrology, Chongqing People’s Hospital, Chongqing, China
| | - Liming Deng
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Lu Yang
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Nan Zhang
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Chunyan Xu
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Haitao Ran
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhaoxia Wang
- Department of Ultrasound, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Zhigang Wang
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yuanyi Zheng
- Shanghai Institute of Ultrasound in Medicine, Shanghai Jiao Tong University affiliated Shanghai Sixth People's Hospital, Shanghai, China
- * E-mail:
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18
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Rabbit Model of Human Gliomas: Implications for Intra-Arterial Drug Delivery. PLoS One 2017; 12:e0169656. [PMID: 28103265 PMCID: PMC5245890 DOI: 10.1371/journal.pone.0169656] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 12/19/2016] [Indexed: 11/19/2022] Open
Abstract
The prognosis for malignant brain tumors remains poor despite a combination of surgery, radiotherapy, and chemotherapy. This is partly due to the blood-brain barrier, a major obstacle that prevents therapeutic agents from effectively reaching the tumor. We have recently developed a method for precise and predictable opening of the blood-brain barrier via the intra-arterial administration of mannitol, a hyperosmolar agent, in a rabbit model, whose vascular anatomy facilitates the use of standard interventional neuroradiology techniques and devices. To date, however, no protocols are available that enable human glioma modeling in rabbits. In this article, we report on the xenotransplantation of a human glioblastoma (GBM-1) in adult New Zealand rabbits. We induced multi-drug immunosuppression (Mycophenolate Mofetil, Dexamethasone, Tacrolimus) and stereotactically implanted GBM-1 tumor cells into rabbit brains. The rabbits were followed for 42 days, monitored by MRI and body weight measurements, and underwent postmortem histopathological analysis. On MRI, brain tumors were identified on T2-weighted scans. On histopathology, tumors were detected with hematoxylin/eosin and their human origin was confirmed with immunohistochemistry against human-specific antigens. Our method for human glioma modeling in rabbits provides the foundation to test novel treatment strategies, including intra-arterial therapeutic agent delivery.
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19
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Bimonte S, Leongito M, Piccirillo M, Tamma ML, Vallifuoco M, Bracco A, Mancini A, Di Napoli D, Castaldo S, Cozzolino S, Iacobellis F, Grassi R, Granata V, Lastoria S, Curley S, Izzo F. Induction of VX2 para-renal carcinoma in rabbits: generation of animal model for loco-regional treatments of solid tumors. Infect Agent Cancer 2016; 11:62. [PMID: 27980609 PMCID: PMC5134289 DOI: 10.1186/s13027-016-0103-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 10/23/2016] [Indexed: 11/30/2022] Open
Abstract
Background Animal models of para-renal cancer can provide useful information for the evaluation of tumor response to loco-regional therapy experiments in solid tumors. The aim of our study was to establish a rabbit para-renal cancer model using locally implanted VX2 tumors. Methods In order to generate a rabbit model of para-renal cancer, we established four hind limb donor rabbits by using frozen VX2 tumor samples. Following inoculation, rabbits were monitored for appetite and signs of pain. Viable tumors appeared as palpable nodules within 2 weeks of inoculation. Tumor growth was confirmed in all rabbits by high-resolution ultrasound analysis and histology. Once tumor growth was established, hind limb tumors extraction was used for tumor line propagation and para-renal tumor creation. Twenty-one rabbit models bearing para-renal cancer were established by implanting VX2 tumor into the para-renal capsula. Tumors developed into discreet 2–3 cm nodules within 1–3 weeks of implantation. Serial renal ultrasonography follow-up, starting 1 week after tumor implantation, was performed. Two weeks after tumor implantation, rabbits were euthanized and tumors and other organs were collected for histopathology. Results Tumor growth after VX2 tumor fragment implantation was confirmed in all rabbits by high-resolution ultrasound (US) imaging examinations of the para-renal regions and was measured with digital caliper. The para-renal injection of VX2 tumor fragments, achieved tumor growth in 100% of cases. All data were confirmed by histological analysis. Conclusions We generated for the first time, a model of para-renal cancer by surgical tumor implantation of VX2 frozen tumor fragments into rabbit’s para-renal region. This method minimizes the development of metastases and the use of non-necrotic tumors and will optimize the evaluation of tumor response to loco-regional therapy experiments.
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Affiliation(s)
- Sabrina Bimonte
- Division of Abdominal Surgical Oncology, Hepatobiliary Unit, Istituto Nazionale per lo studio e la cura dei Tumori "Fondazione G. Pascale", IRCCS, Via Mariano Semmola, 80131 Naples, Italy
| | - Maddalena Leongito
- Division of Abdominal Surgical Oncology, Hepatobiliary Unit, Istituto Nazionale per lo studio e la cura dei Tumori "Fondazione G. Pascale", IRCCS, Via Mariano Semmola, 80131 Naples, Italy
| | - Mauro Piccirillo
- Division of Abdominal Surgical Oncology, Hepatobiliary Unit, Istituto Nazionale per lo studio e la cura dei Tumori "Fondazione G. Pascale", IRCCS, Via Mariano Semmola, 80131 Naples, Italy
| | - Maria Luisa Tamma
- Center of Biotechnologies, Antonio Cardarelli Hospital, Naples, Italy
| | | | - Adele Bracco
- Center of Biotechnologies, Antonio Cardarelli Hospital, Naples, Italy
| | - Antonio Mancini
- Center of Biotechnologies, Antonio Cardarelli Hospital, Naples, Italy
| | - Daniele Di Napoli
- Center of Biotechnologies, Antonio Cardarelli Hospital, Naples, Italy
| | | | - Santolo Cozzolino
- Center of Biotechnologies, Antonio Cardarelli Hospital, Naples, Italy
| | | | - Roberto Grassi
- Institute of Radiology, Second University of Naples, Naples, Italy
| | - Vincenza Granata
- Division of Radiology, Istituto Nazionale per lo studio e la cura dei Tumori "Fondazione G. Pascale",-IRCCS, Naples, Italy
| | - Secondo Lastoria
- Department of Diagnostic Imaging and Radiotherapy, Division of Nuclear Medicine, Istituto Nazionale Tumori "Fondazione G.Pascale" - IRCCS, Naples, Italy
| | - Steven Curley
- Department of Surgery, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030 USA
| | - Francesco Izzo
- Division of Abdominal Surgical Oncology, Hepatobiliary Unit, Istituto Nazionale per lo studio e la cura dei Tumori "Fondazione G. Pascale", IRCCS, Via Mariano Semmola, 80131 Naples, Italy
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20
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Jin CS, Wada H, Anayama T, McVeigh PZ, Hu HP, Hirohashi K, Nakajima T, Kato T, Keshavjee S, Hwang D, Wilson BC, Zheng G, Yasufuku K. An Integrated Nanotechnology-Enabled Transbronchial Image-Guided Intervention Strategy for Peripheral Lung Cancer. Cancer Res 2016; 76:5870-5880. [PMID: 27543602 DOI: 10.1158/0008-5472.can-15-3196] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 06/07/2016] [Indexed: 12/25/2022]
Abstract
Early detection and efficient treatment modality of early-stage peripheral lung cancer is essential. Current nonsurgical treatments for peripheral lung cancer show critical limitations associated with various complications, requiring alternative minimally invasive therapeutics. Porphysome nanoparticle-enabled fluorescence-guided transbronchial photothermal therapy (PTT) of peripheral lung cancer was developed and demonstrated in preclinical animal models. Systemically administered porphysomes accumulated in lung tumors with significantly enhanced disease-to-normal tissue contrast, as confirmed in three subtypes of orthotopic human lung cancer xenografts (A549, H460, and H520) in mice and in an orthotopic VX2 tumor in rabbits. An in-house prototype fluorescence bronchoscope demonstrated the capability of porphysomes for in vivo imaging of lung tumors in the mucosal/submucosal layers, providing real-time fluorescence guidance for transbronchial PTT. Porphysomes also enhanced the efficacy of transbronchial PTT significantly and resulted in selective and efficient tumor tissue ablation in the rabbit model. A clinically used cylindrical diffuser fiber successfully achieved tumor-specific thermal ablation, showing promising evidence for the clinical translation of this novel platform to impact upon nonsurgical treatment of early-stage peripheral lung cancer. Cancer Res; 76(19); 5870-80. ©2016 AACR.
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Affiliation(s)
- Cheng S Jin
- Graduate Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada. Institute of Biomaterial and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada. Princess Margaret Cancer Centre and TECHNA Institute, University Health Network, Toronto, Ontario, Canada
| | - Hironobu Wada
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Takashi Anayama
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Patrick Z McVeigh
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Hsin Pei Hu
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Kentaro Hirohashi
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Takahiro Nakajima
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Tatsuya Kato
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Shaf Keshavjee
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - David Hwang
- Division of Experimental Therapeutics, Respiratory & Critical Care, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - Brian C Wilson
- Princess Margaret Cancer Centre and TECHNA Institute, University Health Network, Toronto, Ontario, Canada. Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Gang Zheng
- Graduate Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada. Institute of Biomaterial and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada. Princess Margaret Cancer Centre and TECHNA Institute, University Health Network, Toronto, Ontario, Canada. Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada.
| | - Kazuhiro Yasufuku
- Princess Margaret Cancer Centre and TECHNA Institute, University Health Network, Toronto, Ontario, Canada. Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada.
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Bimonte S, Leongito M, Piccirillo M, de Angelis C, Pivonello C, Granata V, Izzo F. Radio-frequency ablation-based studies on VX2rabbit models for HCC treatment. Infect Agent Cancer 2016; 11:38. [PMID: 27525037 PMCID: PMC4981963 DOI: 10.1186/s13027-016-0082-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 05/30/2016] [Indexed: 12/15/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the fifth most frequent cancer worldwide with high morbidity, mortality and increasing incidence. It is of note that the main curative therapies for HCC are hepatic resection and transplantation although the majority of patients at the time of presentation are not eligible for resection or orthotopic liver transplantation (OLT) due to the underlying cirrhosis. Currently, a variety of loco-regional therapies, including radiofrequency ablation (RFA), percutaneous ethanol injection (PEI), microwave coagulation therapy (MCT), transarterial chemoembolization (TACE) and others, have been developed as alternative treatment options for HCC. Among these techniques, RFA is currently the most widely used treatment, due to its several advantages, such as safety and efficacy. To date, the effectiveness of RFA for HCC is reduced by the presence of residual tumor as a consequence of insufficient treatment. In order to ameliorate the effects of RFA on HCC, several in vivo studies, have been performed on its application as single or in combination treatment with drugs or others loco-regional therapies, by using rabbit VX2 liver model. This represents an ideal model of liver cancers and is widely used for imaging and other experimental studies due to the rapid growth of these tumors and their similarity to human hepatocellular carcinoma. In order to elucidate the therapeutic potential of RFA with adjuvant treatments for HCC, we reviewed the latest findings on the RFA-based studies in rabbit VX2 hepatocarcinoma models.
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Affiliation(s)
- Sabrina Bimonte
- Division of Abdominal Surgical Oncology, Hepatobiliary Unit, Istituto Nazionale per lo studio e la cura dei Tumori "Fondazione G. Pascale", - IRCCS, Via Mariano Semmola, 80131 Naples, Italy
| | - Maddalena Leongito
- Division of Abdominal Surgical Oncology, Hepatobiliary Unit, Istituto Nazionale per lo studio e la cura dei Tumori "Fondazione G. Pascale", - IRCCS, Via Mariano Semmola, 80131 Naples, Italy
| | - Mauro Piccirillo
- Division of Abdominal Surgical Oncology, Hepatobiliary Unit, Istituto Nazionale per lo studio e la cura dei Tumori "Fondazione G. Pascale", - IRCCS, Via Mariano Semmola, 80131 Naples, Italy
| | | | - Claudia Pivonello
- Dipartimento di Medicina Clinica e Chirurgia, Sezione di Endocrinologia, Università di Napoli Federico II, Naples, Italy
| | - Vincenza Granata
- Division of Abdominal Surgical Oncology, Hepatobiliary Unit, Istituto Nazionale per lo studio e la cura dei Tumori "Fondazione G. Pascale", - IRCCS, Via Mariano Semmola, 80131 Naples, Italy
| | - Francesco Izzo
- Division of Abdominal Surgical Oncology, Hepatobiliary Unit, Istituto Nazionale per lo studio e la cura dei Tumori "Fondazione G. Pascale", - IRCCS, Via Mariano Semmola, 80131 Naples, Italy
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Digesu CS, Hofferberth SC, Grinstaff MW, Colson YL. From Diagnosis to Treatment: Clinical Applications of Nanotechnology in Thoracic Surgery. Thorac Surg Clin 2016; 26:215-28. [PMID: 27112260 PMCID: PMC4851727 DOI: 10.1016/j.thorsurg.2015.12.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Nanotechnology is an emerging field with potential as an adjunct to cancer therapy, particularly thoracic surgery. Therapy can be delivered to tumors in a more targeted fashion, with less systemic toxicity. Nanoparticles may aid in diagnosis, preoperative characterization, and intraoperative localization of thoracic tumors and their lymphatics. Focused research into nanotechnology's ability to deliver both diagnostics and therapeutics has led to the development of nanotheranostics, which promises to improve the treatment of thoracic malignancies through enhanced tumor targeting, controlled drug delivery, and therapeutic monitoring. This article reviews nanoplatforms, their unique properties, and the potential for clinical application in thoracic surgery.
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Affiliation(s)
- Christopher S Digesu
- Division of Thoracic Surgery, Department of Surgery, Brigham and Women's Hospital, 15 Francis St, Boston, MA 02115, USA
| | - Sophie C Hofferberth
- Division of Thoracic Surgery, Department of Surgery, Brigham and Women's Hospital, 15 Francis St, Boston, MA 02115, USA
| | - Mark W Grinstaff
- Department of Biomedical Engineering, Metcalf Science Center, Boston University, SCI 518, 590 Commonwealth Avenue, Boston, MA 02215, USA; Department of Chemistry, Metcalf Science Center, Boston University, SCI 518, 590 Commonwealth Avenue, Boston, MA 02215, USA; Department of Medicine, Metcalf Science Center, Boston University, SCI 518, 590 Commonwealth Avenue, Boston, MA 02215, USA
| | - Yolonda L Colson
- Division of Thoracic Surgery, Department of Surgery, Brigham and Women's Hospital, 15 Francis St, Boston, MA 02115, USA; Division of Thoracic Surgery, Brigham and Women's Hospital, Harvard Medical School, 15 Francis St, Boston, MA 02155, USA.
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Li P, Zheng W, Zhao L. Convex probe endobronchial ultrasound: applications beyond conventional indications. J Thorac Dis 2015; 7:E289-97. [PMID: 26543618 DOI: 10.3978/j.issn.2072-1439.2015.09.23] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is maturing and gaining acceptance by more and more clinicians for lymph node staging of lung cancer and diagnosis of mediastinal and hilar masses or lymph node enlargement by convex probe endobronchial ultrasound (CP-EBUS). The application of CP-EBUS, however, is not limited to conventional indications. Diagnostically, elastography is a new technology for the differentiation of benign and malignant lymph nodes before aspiration. CP-EBUS can also be used for pulmonary vascular diseases, such as pulmonary embolism (PE) and non-thrombotic endovascular lesions (NELs). Therapeutically, CP-EBUS can be used for cyst drainage and drug injections. CP-EBUS is not limited to observation and aspiration of mediastinal masses and lymph nodes, but is also suitable for exploration of other tissues external to the central airway, which necessitates unprecedented skills for the bronchoscopist.
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Affiliation(s)
- Peng Li
- Department of Respiratory Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Wei Zheng
- Department of Respiratory Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Li Zhao
- Department of Respiratory Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China
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25
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Ashton JR, West JL, Badea CT. In vivo small animal micro-CT using nanoparticle contrast agents. Front Pharmacol 2015; 6:256. [PMID: 26581654 PMCID: PMC4631946 DOI: 10.3389/fphar.2015.00256] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 10/19/2015] [Indexed: 12/12/2022] Open
Abstract
Computed tomography (CT) is one of the most valuable modalities for in vivo imaging because it is fast, high-resolution, cost-effective, and non-invasive. Moreover, CT is heavily used not only in the clinic (for both diagnostics and treatment planning) but also in preclinical research as micro-CT. Although CT is inherently effective for lung and bone imaging, soft tissue imaging requires the use of contrast agents. For small animal micro-CT, nanoparticle contrast agents are used in order to avoid rapid renal clearance. A variety of nanoparticles have been used for micro-CT imaging, but the majority of research has focused on the use of iodine-containing nanoparticles and gold nanoparticles. Both nanoparticle types can act as highly effective blood pool contrast agents or can be targeted using a wide variety of targeting mechanisms. CT imaging can be further enhanced by adding spectral capabilities to separate multiple co-injected nanoparticles in vivo. Spectral CT, using both energy-integrating and energy-resolving detectors, has been used with multiple contrast agents to enable functional and molecular imaging. This review focuses on new developments for in vivo small animal micro-CT using novel nanoparticle probes applied in preclinical research.
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Affiliation(s)
- Jeffrey R Ashton
- Department of Biomedical Engineering, Duke University, Durham NC, USA ; Department of Radiology, Center for In Vivo Microscopy, Duke University Medical Center, Durham NC, USA
| | - Jennifer L West
- Department of Biomedical Engineering, Duke University, Durham NC, USA
| | - Cristian T Badea
- Department of Radiology, Center for In Vivo Microscopy, Duke University Medical Center, Durham NC, USA
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26
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Parvinian A, Casadaban LC, Gaba RC. Development, growth, propagation, and angiographic utilization of the rabbit VX2 model of liver cancer: a pictorial primer and "how to" guide. Diagn Interv Radiol 2015; 20:335-40. [PMID: 24834491 DOI: 10.5152/dir.2014.13415] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The VX2 tumor is a leporine anaplastic squamous cell carcinoma characterized by rapid growth, hypervascularity, and facile propagation in the skeletal muscle. Since its introduction over 70 years ago, it has been used to model a variety of malignancies, and is commonly employed by interventional radiologists in preclinical investigations of hepatocellular carcinoma. However, despite the widespread and lasting popularity of the model, there are few technical resources detailing its use. Herein, we present a comprehensive pictorial outline of the technical methodology for development, growth, propagation, and angiographic utilization of the rabbit VX2 liver tumor model.
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Ma J, Xu CS, Gao F, Chen M, Li F, Du LF. Diagnostic and therapeutic research on ultrasound microbubble/nanobubble contrast agents (Review). Mol Med Rep 2015; 12:4022-4028. [PMID: 26081968 DOI: 10.3892/mmr.2015.3941] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 12/12/2014] [Indexed: 11/06/2022] Open
Abstract
The contrast enhanced imaging function of ultrasound contrast agents (UCAs) has been extensively investigated using physical acoustic signatures. It has a number of novel applications, including tissue‑specific molecular imaging and multi‑modal imaging. In addition there are numerous other therapeutic applications of UCAs, for example as vehicles for drug or gene delivery. These uses are discussed, as well as the acoustically‑induced biological effects, including ultrasound targeted microbubble destruction (UTMD). This review also explores the considerations for the safe use of UCA from an acoustic standpoint. The scope of the application of UCA has markedly expanded in recent years, and it is a rapidly growing field of medical research. The current article reviews recent advances in the diagnostic and therapeutic applications of ultrasound microbubble/nanobubble contrast agents.
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Affiliation(s)
- Jing Ma
- Department of Ultrasound, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
| | - Chang Song Xu
- Department of Ultrasound, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| | - Feng Gao
- Department of Ultrasound, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
| | - Ming Chen
- Department of Cardiovascular Ultrasound, Shanghai East Hospital Affiliated to Tongji University, Shanghai 200120, P.R. China
| | - Fan Li
- Department of Ultrasound, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
| | - Lian Fang Du
- Department of Ultrasound, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
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Wada H, Anayama T, Hirohashi K, Nakajima T, Kato T, Waddell TK, Keshavjee S, Yoshino I, Yasufuku K. Thoracoscopic ultrasonography for localization of subcentimetre lung nodules. Eur J Cardiothorac Surg 2015; 49:690-7. [DOI: 10.1093/ejcts/ezv124] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 03/04/2015] [Indexed: 11/13/2022] Open
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Wang Y, Kan HL, Sun H, Wang DX, Wang HW, Liu JX. Magnetic resonance imaging-navigated argon-helium cryoablation therapy against a rabbit VX2 brain tumor. Exp Ther Med 2015; 9:2229-2234. [PMID: 26136965 DOI: 10.3892/etm.2015.2375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 12/11/2014] [Indexed: 12/12/2022] Open
Abstract
The aim of the present study was to investigate the feasibility of interventional magnetic resonance imaging (MRI)-guided and monitored argon-helium cryoablation for the treatment of brain tumors in rabbits. In addition, the present study evaluated the associations between imaging and pathology, the therapeutic effects and the effects on the surrounding normal tissues. A total of 14 rabbits were equally divided into groups C and D. Under general anesthesia, the skull was drilled and tumor blocks were implanted. Subsequently, a New Zealand rabbit VX2 brain tumor model was successfully established. Rabbits in group C were treated with argon-helium cryoablation and those in group D did not undergo any treatment (control). Regular postoperative MRI scanning was performed to observe the changes in tumor size, and the survival times of the rabbits in groups C and D were recorded. The extent of necrosis in the brain tumor exhibited a significant correlation with the freezing time of cryoablation, and the necrotic region was shown to be the same size as the ice ball. The survival times of the rabbits in the treatment group (group C) were significantly prolonged. Therefore, the observations of the present study demonstrated that the VX2 brain tumor model, produced using an improved tumor block implantation method, was stable and suitable for MRI observation and interventional study. In addition, argon-helium cryoablation was shown to be a safe and feasible therapeutic method for the treatment of brain tumors, and was demonstrated to significantly increase the survival times of the brain tumor-bearing rabbits.
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Affiliation(s)
- Yang Wang
- Department of Interventional Oncology, Jilin Provincial People's Hospital, Changchun, Jilin 130021, P.R. China
| | - Hong-Li Kan
- Department of Anesthesia, Tumor Hospital of Jilin Province, Changchun, Jilin 130012, P.R. China
| | - Hong Sun
- Department of Anesthesia, Tumor Hospital of Jilin Province, Changchun, Jilin 130012, P.R. China
| | - Dong-Xin Wang
- Department of Anesthesia, Tumor Hospital of Jilin Province, Changchun, Jilin 130012, P.R. China
| | - Huai-Wu Wang
- Department of Anesthesia, Tumor Hospital of Jilin Province, Changchun, Jilin 130012, P.R. China
| | - Ji-Xin Liu
- Department of Anesthesia, Tumor Hospital of Jilin Province, Changchun, Jilin 130012, P.R. China
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Contrast agents for preclinical targeted X-ray imaging. Adv Drug Deliv Rev 2014; 76:116-133. [PMID: 25086373 DOI: 10.1016/j.addr.2014.07.013] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 07/08/2014] [Accepted: 07/22/2014] [Indexed: 11/20/2022]
Abstract
Micro-computed tomography (micro-CT) is an X-ray based instrument that it is specifically designed for biomedical research at a preclinical stage for live imaging of small animals. This imaging modality is cost-effective, fast, and produces remarkable high-resolution images of X-ray opaque skeleton. Administration of biocompatible X-ray opaque contrast agent allows delineation of the blood vessels, and internal organs and even detection of tumor metastases as small as 300 μm. However, the main limitation of micro-CT lies in the poor efficacy or toxicity of the contrast agents. Moreover, contrast agents for micro-CT have to be stealth nanoparticulate systems, i.e. preventing their rapid renal clearance. The chemical composition and physicochemical properties will condition their uptake and elimination pathways, and therefore all the biological fluids, organs, and tissues trough this elimination route of the nanoparticles will be contrasted. Furthermore, several technologies playing on the nanoparticle properties, aim to influence these biological pathways in order to induce their accumulation onto given targeted sites, organs of tumors. In function of the methodologies carried out, taking benefit or not of the action of immune system, of the natural response of the organism like hepatocyte uptake or enhanced permeation and retention effect, or even accumulation due to ligand/receptor interactions, the technologies are called passive or active targeted imaging. The present review presents the most recent advances in the development of specific contrast agents for targeted X-ray imaging micro-CT, discussing the recent advance of in vivo targeting of nanoparticulate contrast agents, and the influence of the formulations, nature of the nanocarrier, nature and concentration of the X-ray contrasting materials, effect of the surface properties, functionalization and bioconjugation. The pharmacokinetic and versatility of nanometric systems appear particularly advantageous for addressing the versatile biomedical research needs. State of the art investigations are on going to propose contrast agents with tumor accumulating properties and will contribute for development of safer cancer medicine having detection and therapeutic modalities.
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