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Stribbling SM, Beach C, Ryan AJ. Orthotopic and metastatic tumour models in preclinical cancer research. Pharmacol Ther 2024; 257:108631. [PMID: 38467308 DOI: 10.1016/j.pharmthera.2024.108631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 02/27/2024] [Accepted: 03/08/2024] [Indexed: 03/13/2024]
Abstract
Mouse models of disease play a pivotal role at all stages of cancer drug development. Cell-line derived subcutaneous tumour models are predominant in early drug discovery, but there is growing recognition of the importance of the more complex orthotopic and metastatic tumour models for understanding both target biology in the correct tissue context, and the impact of the tumour microenvironment and the immune system in responses to treatment. The aim of this review is to highlight the value that orthotopic and metastatic models bring to the study of tumour biology and drug development while pointing out those models that are most likely to be encountered in the literature. Important developments in orthotopic models, such as the increasing use of early passage patient material (PDXs, organoids) and humanised mouse models are discussed, as these approaches have the potential to increase the predictive value of preclinical studies, and ultimately improve the success rate of anticancer drugs in clinical trials.
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Affiliation(s)
- Stephen M Stribbling
- Department of Chemistry, University College London, Gower Street, London WC1E 6BT, UK.
| | - Callum Beach
- Department of Oncology, University of Oxford, ORCRB, Roosevelt Drive, Oxford OX3 7DQ, UK
| | - Anderson J Ryan
- Department of Oncology, University of Oxford, ORCRB, Roosevelt Drive, Oxford OX3 7DQ, UK; Fast Biopharma, Aston Rowant, Oxfordshire, OX49 5SW, UK.
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2
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Le ND, Nguyen BL, Patil BR, Chun H, Kim S, Nguyen TOO, Mishra S, Tandukar S, Chang JH, Kim DY, Jin SG, Choi HG, Ku SK, Kim J, Kim JO. Antiangiogenic Therapeutic mRNA Delivery Using Lung-Selective Polymeric Nanomedicine for Lung Cancer Treatment. ACS NANO 2024; 18:8392-8410. [PMID: 38450656 DOI: 10.1021/acsnano.3c13039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Therapeutic antibodies that block vascular endothelial growth factor (VEGF) show clinical benefits in treating nonsmall cell lung cancers (NSCLCs) by inhibiting tumor angiogenesis. Nonetheless, the therapeutic effects of systemically administered anti-VEGF antibodies are often hindered in NSCLCs because of their limited distribution in the lungs and their adverse effects on normal tissues. These challenges can be overcome by delivering therapeutic antibodies in their mRNA form to lung endothelial cells, a primary target of VEGF-mediated pulmonary angiogenesis, to suppress the NSCLCs. In this study, we synthesized derivatives of poly(β-amino esters) (PBAEs) and prepared nanoparticles to encapsulate the synthetic mRNA encoding bevacizumab, an anti-VEGF antibody used in the clinic. Optimization of nanoparticle formulations resulted in a selective lung transfection after intravenous administration. Notably, the optimized PBAE nanoparticles were distributed in lung endothelial cells, resulting in the secretion of bevacizumab. We analyzed the protein corona on the lung- and spleen-targeting nanoparticles using proteomics and found distinctive features potentially contributing to their organ-selectivity. Lastly, bevacizumab mRNA delivered by the lung-targeting PBAE nanoparticles more significantly inhibited tumor proliferation and angiogenesis than recombinant bevacizumab protein in orthotopic NSCLC mouse models, supporting the therapeutic potential of bevacizumab mRNA therapy and its selective delivery through lung-targeting nanoparticles. Our proof-of-principle results highlight the clinical benefits of nanoparticle-mediated mRNA therapy in anticancer antibody treatment in preclinical models.
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Affiliation(s)
- Ngoc Duy Le
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Bao Loc Nguyen
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | | | - HeeSang Chun
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - SiYoon Kim
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | | | - Sunil Mishra
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Sudarshan Tandukar
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Jae-Hoon Chang
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Dong Young Kim
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Sung Giu Jin
- Department of Pharmaceutical Engineering, Dankook University, Cheonan, 31116, Republic of Korea
| | - Han-Gon Choi
- College of Pharmacy, Hanyang University, Ansan, 15588, Republic of Korea
| | - Sae Kwang Ku
- College of Korean Medicine, Daegu Haany University, Gyeongsan, 38610, Republic of Korea
| | - Jeonghwan Kim
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Jong Oh Kim
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
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3
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Xu JJ, Lucero MY, Herndon NL, Lee MC, Chan J. Comparison of a Minimally Invasive Transthoracic Approach and a Surgical Method for Intrapleural Injection of Tumor Cells in Mice. Comp Med 2023; 73:120-126. [PMID: 36922006 PMCID: PMC10162381 DOI: 10.30802/aalas-cm-22-000044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 08/26/2022] [Accepted: 12/09/2022] [Indexed: 03/17/2023]
Abstract
Intrapleural injections can be used in mice to deliver therapeutic and diagnostic agents and to model human disease processes (for example, pleural fluid accumulation, malignant pleural disease, and lung cancers). In the context of establishing cancer models, minimally invasive methods of intrapleural injection are desirable because inflammation at the injection site can have a major impact on tumor growth and progression. Common approaches for intrapleural injection include surgical exposure of the thoracic wall or the diaphragm prior to injection; however, these invasive procedures require tissue dissection that triggers an undesirable inflammatory response and increases the risk of pneumothorax. While nonsurgical procedures can minimize this concern, 'blind' injections may lead to off target inoculation. In this study, we hypothesized that a minimally invasive transthoracic approach (MI-TT) would produce a tumor distribution and burden similar to that of a surgical transabdominal approach (SX-TA). Prior to performing the procedures on live mice, surgeons were trained using cadavers and terminal procedures. Then a total of 14 nude mice (female, 4 to 6 wk old) were injected with 50 μL (5 million) A549-Luc2 human cancer cells either using the MI-TT (n = 8) or SX-TA (n = 6) approach under carprofen analgesia and isoflurane anesthesia. Our results indicate that with training, a minimally invasive transthoracic approach for intrapleural injection provides more consistent tumor placement and a greater tumor burden than does the surgical method. However, additional studies are necessary to confirm anatomic placement and characterize tumor profiles.
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Affiliation(s)
- Jiajie Jessica Xu
- Division of Animal Resources
- Department of Clinical Medicine, College of Veterinary Medicine, and
| | - Melissa Y Lucero
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, and Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Nicole L Herndon
- Division of Animal Resources
- Department of Clinical Medicine, College of Veterinary Medicine, and
| | - Michael C Lee
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, and Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Jefferson Chan
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, and Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois
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Wang LM, Yadav R, Serban M, Arias O, Seuntjens J, Ybarra N. Validation of an orthotopic non-small cell lung cancer mouse model, with left or right tumor growths, to use in conformal radiotherapy studies. PLoS One 2023; 18:e0284282. [PMID: 37053154 PMCID: PMC10101527 DOI: 10.1371/journal.pone.0284282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 03/27/2023] [Indexed: 04/14/2023] Open
Abstract
Orthotopic non-small cell lung cancer (NSCLC) mice models are important for establishing translatability of in vitro results. However, most orthotopic lung models do not produce localized tumors treatable by conformal radiotherapy (RT). Here we report on the performance of an orthotopic mice model featuring conformal RT treatable tumors following either left or right lung tumor cell implantation. Athymic Nude mice were surgically implanted with H1299 NSCLC cell line in either the left or right lung. Tumor development was tracked bi-weekly using computed tomography (CT) imaging. When lesions reached an appropriate size for treatment, animals were separated into non-treatment (control group) and RT treated groups. Both RT treated left and right lung tumors which were given a single dose of 20 Gy of 225 kV X-rays. Left lung tumors were treated with a two-field parallel opposed plan while right lung tumors were treated with a more conformal four-field plan to assess tumor control. Mice were monitored for 30 days after RT or after tumor reached treatment size for non-treatment animals. Treatment images from the left and right lung tumor were also used to assess the dose distribution for four distinct treatment plans: 1) Two sets of perpendicularly staggered parallel opposed fields, 2) two fields positioned in the anterior-posterior and posterior-anterior configuration, 3) an 180° arc field from 0° to 180° and 4) two parallel opposed fields which cross through the contralateral lung. Tumor volumes and changes throughout the follow-up period were tracked by three different types of quantitative tumor size approximation and tumor volumes derived from contours. Ultimately, our model generated delineable and conformal RT treatable tumor following both left and right lung implantation. Similarly consistent tumor development was noted between left and right models. We were also able to demonstrate that a single 20 Gy dose of 225 kV X-rays applied to either the right or left lung tumor models had similar levels of tumor control resulting in similar adverse outcomes and survival. And finally, three-dimensional tumor approximation featuring volume computed from the measured length across three perpendicular axes gave the best approximation of tumor volume, most closely resembled tumor volumes obtained with contours.
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Affiliation(s)
- Li Ming Wang
- Department of Experimental Medicine, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
- Cancer Research Program, Research Institute of the McGill University Healthcare Centre, Montreal, Quebec, Canada
| | - Ranjan Yadav
- Medical Physics Unit, Department of Oncology, McGill University, Montreal, Quebec, Canada
| | - Monica Serban
- Radiation Medicine, Princess Margaret Cancer Centre and Department of Radiation Oncology and Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
- Department of Oncology, McGill University, Montreal, Quebec, Canada
| | - Osvaldo Arias
- Cancer Research Program, Research Institute of the McGill University Healthcare Centre, Montreal, Quebec, Canada
| | - Jan Seuntjens
- Radiation Medicine, Princess Margaret Cancer Centre and Department of Radiation Oncology and Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
- Department of Oncology, McGill University, Montreal, Quebec, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Norma Ybarra
- Department of Experimental Medicine, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
- Cancer Research Program, Research Institute of the McGill University Healthcare Centre, Montreal, Quebec, Canada
- Department of Oncology, McGill University, Montreal, Quebec, Canada
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Milic M, Mondini M, Deutsch E. How to Improve SBRT Outcomes in NSCLC: From Pre-Clinical Modeling to Successful Clinical Translation. Cancers (Basel) 2022; 14:cancers14071705. [PMID: 35406477 PMCID: PMC8997119 DOI: 10.3390/cancers14071705] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 03/14/2022] [Accepted: 03/22/2022] [Indexed: 02/01/2023] Open
Abstract
Simple Summary Despite major research and clinical efforts, lung cancer remains the leading cause of cancer-related death. Stereotactic body radiotherapy (SBRT) has emerged as a major treatment modality for lung cancer in the last decade. Additional research is needed to elucidate underlying mechanisms of resistance and to develop improved therapeutic strategies. Clinical progress relies on accurate preclinical modelling of human disease in order to yield clinically meaningful results; however, successful translation of pre-clinical research is still lagging behind. In this review, we summarize the major clinical developments of radiation therapy for non-small-cell lung cancer (NSCLC), and we discuss the pre-clinical research models at our disposal, highlighting ongoing translational challenges and future perspectives. Abstract Despite major research and clinical efforts, lung cancer remains the leading cause of cancer-related death. While the delivery of conformal radiotherapy and image guidance of stereotactic body radiotherapy (SBRT) have revolutionized the treatment of early-stage non-small-cell lung cancer (NSCLC), additional research is needed to elucidate underlying mechanisms of resistance and identify novel therapeutic combinations. Clinical progress relies on the successful translation of pre-clinical work, which so far has not always yielded expected results. Improved clinical modelling involves characterizing the preclinical models and selecting appropriate experimental designs that faithfully mimic precise clinical scenarios. Here, we review the current role of SBRT and the scope of pre-clinical armamentarium at our disposal to improve successful clinical translation of pre-clinical research in the radiation oncology of NSCLC.
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Affiliation(s)
- Marina Milic
- Gustave Roussy, Université Paris-Saclay, INSERM U1030, F-94805 Villejuif, France;
| | - Michele Mondini
- Gustave Roussy, Université Paris-Saclay, INSERM U1030, F-94805 Villejuif, France;
- Correspondence: (M.M.); (E.D.)
| | - Eric Deutsch
- Gustave Roussy, Université Paris-Saclay, INSERM U1030, F-94805 Villejuif, France;
- Gustave Roussy, Département d’Oncologie-Radiothérapie, F-94805 Villejuif, France
- Correspondence: (M.M.); (E.D.)
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Stott Bond NL, Dréau D, Marriott I, Bennett JM, Turner MJ, Arthur ST, Marino JS. Low-Dose Metformin as a Monotherapy Does Not Reduce Non-Small-Cell Lung Cancer Tumor Burden in Mice. Biomedicines 2021; 9:biomedicines9111685. [PMID: 34829914 PMCID: PMC8615566 DOI: 10.3390/biomedicines9111685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 11/16/2022] Open
Abstract
Non-small-cell lung cancer (NSCLC) makes up 80-85% of lung cancer diagnoses. Lung cancer patients undergo surgical procedures, chemotherapy, and/or radiation. Chemotherapy and radiation can induce deleterious systemic side effects, particularly within skeletal muscle. To determine whether metformin reduces NSCLC tumor burden while maintaining skeletal muscle health, C57BL/6J mice were injected with Lewis lung cancer (LL/2), containing a bioluminescent reporter for in vivo tracking, into the left lung. Control and metformin (250 mg/kg) groups received treatments twice weekly. Skeletal muscle was analyzed for changes in genes and proteins related to inflammation, muscle mass, and metabolism. The LL/2 model effectively mimics lung cancer growth and tumor burden. The in vivo data indicate that metformin as administered was not associated with significant improvement in tumor burden in this immunocompetent NSCLC model. Additionally, metformin was not associated with significant changes in key tumor cell division and inflammation markers, or improved skeletal muscle health. Metformin treatment, while exhibiting anti-neoplastic characteristics in many cancers, appears not to be an appropriate monotherapy for NSCLC tumor growth in vivo. Future studies should pursue co-treatment modalities, with metformin as a potentially supportive drug rather than a monotherapy to mitigate cancer progression.
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Affiliation(s)
- Nicole L. Stott Bond
- Distance Education, Technology and Integration, University of North Georgia, Dahlonega, GA 30597, USA;
- Laboratory of Systems Physiology, Department of Applied Physiology, Health, and Clinical Sciences, University of North Carolina at Charlotte, Charlotte, NC 28223, USA; (M.J.T.); (S.T.A.)
| | - Didier Dréau
- Department of Biological Sciences, University of North Carolina at Charlotte, Charlotte, NC 28223, USA; (D.D.); (I.M.)
| | - Ian Marriott
- Department of Biological Sciences, University of North Carolina at Charlotte, Charlotte, NC 28223, USA; (D.D.); (I.M.)
| | - Jeanette M. Bennett
- Department of Psychological Science, University of North Carolina at Charlotte, Charlotte, NC 28223, USA;
| | - Michael J. Turner
- Laboratory of Systems Physiology, Department of Applied Physiology, Health, and Clinical Sciences, University of North Carolina at Charlotte, Charlotte, NC 28223, USA; (M.J.T.); (S.T.A.)
| | - Susan T. Arthur
- Laboratory of Systems Physiology, Department of Applied Physiology, Health, and Clinical Sciences, University of North Carolina at Charlotte, Charlotte, NC 28223, USA; (M.J.T.); (S.T.A.)
| | - Joseph S. Marino
- Laboratory of Systems Physiology, Department of Applied Physiology, Health, and Clinical Sciences, University of North Carolina at Charlotte, Charlotte, NC 28223, USA; (M.J.T.); (S.T.A.)
- Correspondence:
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7
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Deep Learning Based Automated Orthotopic Lung Tumor Segmentation in Whole-Body Mouse CT-Scans. Cancers (Basel) 2021; 13:cancers13184585. [PMID: 34572813 PMCID: PMC8471805 DOI: 10.3390/cancers13184585] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/03/2021] [Accepted: 09/08/2021] [Indexed: 11/17/2022] Open
Abstract
Lung cancer is the leading cause of cancer related deaths worldwide. The development of orthotopic mouse models of lung cancer, which recapitulates the disease more realistically compared to the widely used subcutaneous tumor models, is expected to critically aid the development of novel therapies to battle lung cancer or related comorbidities such as cachexia. However, follow-up of tumor take, tumor growth and detection of therapeutic effects is difficult, time consuming and requires a vast number of animals in orthotopic models. Here, we describe a solution for the fully automatic segmentation and quantification of orthotopic lung tumor volume and mass in whole-body mouse computed tomography (CT) scans. The goal is to drastically enhance the efficiency of the research process by replacing time-consuming manual procedures with fast, automated ones. A deep learning algorithm was trained on 60 unique manually delineated lung tumors and evaluated by four-fold cross validation. Quantitative performance metrics demonstrated high accuracy and robustness of the deep learning algorithm for automated tumor volume analyses (mean dice similarity coefficient of 0.80), and superior processing time (69 times faster) compared to manual segmentation. Moreover, manual delineations of the tumor volume by three independent annotators was sensitive to bias in human interpretation while the algorithm was less vulnerable to bias. In addition, we showed that besides longitudinal quantification of tumor development, the deep learning algorithm can also be used in parallel with the previously published method for muscle mass quantification and to optimize the experimental design reducing the number of animals needed in preclinical studies. In conclusion, we implemented a method for fast and highly accurate tumor quantification with minimal operator involvement in data analysis. This deep learning algorithm provides a helpful tool for the noninvasive detection and analysis of tumor take, tumor growth and therapeutic effects in mouse orthotopic lung cancer models.
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Trappetti V, Fernandez-Palomo C, Smyth L, Klein M, Haberthür D, Butler D, Barnes M, Shintani N, de Veer M, Laissue JA, Vozenin MC, Djonov V. Synchrotron Microbeam Radiation Therapy for the Treatment of Lung Carcinoma: A Preclinical Study. Int J Radiat Oncol Biol Phys 2021; 111:1276-1288. [PMID: 34364976 DOI: 10.1016/j.ijrobp.2021.07.1717] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 07/07/2021] [Accepted: 07/30/2021] [Indexed: 11/17/2022]
Abstract
PURPOSE In the past 3 decades, synchrotron microbeam radiation therapy (S-MRT) has been shown to achieve both good tumor control and normal tissue sparing in a range of preclinical animal models. However, the use of S-MRT for the treatment of lung tumors has not yet been investigated. This study is the first to evaluate the therapeutic efficacy of S-MRT for the treatment of lung carcinoma, using a new syngeneic and orthotopic mouse model. METHODS AND MATERIALS Lewis Lung carcinoma-bearing mice were irradiated with 2 cross-fired arrays of S-MRT or synchrotron broad-beam (S-BB) radiation therapy. S-MRT consisted of 17 microbeams with a width of 50 µm and center-to-center spacing of 400 µm. Each microbeam delivered a peak entrance dose of 400 Gy whereas S-BB delivered a homogeneous entrance dose of 5.16 Gy (corresponding to the S-MRT valley dose). RESULTS Both treatments prolonged the survival of mice relative to the untreated controls. However, mice in the S-MRT group developed severe pulmonary edema around the irradiated carcinomas and did not have improved survival relative to the S-BB group. Subsequent postmortem examination of tumor size revealed that the mice in the S-MRT group had notably smaller tumor volume compared with the S-BB group, despite the presence of edema. Mice that were sham-implanted did not display any decline in health after S-MRT, experiencing only mild and transient edema between 4 days and 3 months postirradiation which disappeared after 4 months. Finally, a parallel study investigating the lungs of healthy mice showed the complete absence of radiation-induced pulmonary fibrosis 6 months after S-MRT. CONCLUSIONS S-MRT is a promising tool for the treatment of lung carcinoma, reducing tumor size compared with mice treated with S-BB and sparing healthy lungs from pulmonary fibrosis. Future experiments should focus on optimizing S-MRT parameters to minimize pulmonary edema and maximize the therapeutic ratio.
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Affiliation(s)
| | | | - Lloyd Smyth
- Department of Obstetrics and Gynaecology, University of Melbourne, Royal Women's Hospital, Melbourne, Australia
| | - Mitzi Klein
- Imaging and Medical Beamline, Australian Nuclear Science and Technology Organisation, Australian Synchrotron, Clayton, Australia
| | | | - Duncan Butler
- Imaging and Medical Beamline, Australian Nuclear Science and Technology Organisation, Australian Synchrotron, Clayton, Australia
| | - Micah Barnes
- Imaging and Medical Beamline, Australian Nuclear Science and Technology Organisation, Australian Synchrotron, Clayton, Australia; Department of Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, Australia
| | | | - Michael de Veer
- Monash Biomedical Imaging, Monash University, Clayton, Australia
| | | | - Marie C Vozenin
- Department of Radiation Oncology/CHUV, Lausanne University Hospital and University of Lausanne, Switzerland
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Chen Z, Cao K, Hou Y, Lu F, Li L, Wang L, Xia Y, Zhang L, Chen H, Li R, Chang L, Li W. PTTG1 knockdown enhances radiation-induced antitumour immunity in lung adenocarcinoma. Life Sci 2021; 277:119594. [PMID: 33984357 DOI: 10.1016/j.lfs.2021.119594] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 04/24/2021] [Accepted: 05/02/2021] [Indexed: 12/25/2022]
Abstract
AIM Ionizing radiation (IR) can induce local and systemic antitumour immune responses to some degree and augment immunotherapeutic efficacy. IR may also increase residual tumour cell invasion and elicit immunosuppression in the tumour microenvironment (TME). It remains poorly understand, whether IR leads to immune negative response or invasive capacity increases in lung adenocarcinoma (LAC). MATERIALS AND METHODS RNA interference (RNAi) was used to silence pituitary tumour-transforming gene-1 (PTTG1) and SMAD3 expression in LAC cells. A coculture system of tumour cells and PBMCs was constructed. Cells were exposed to different doses (0, 4 and 8 Gy) of X-ray irradiation. Flow cytometric analysis and Transwell assays were applied. An orthotopic Lewis lung cancer (LLC) mouse tumour model was established. Bioluminescence imaging (BLI) was used. LLC tumours were exposed to a single 15 Gy dose of X-ray irradiation. KEY FINDINGS PTTG1 knockdown reinforced the inhibitory effect of IR on the invasive ability of A549 cells and enhanced the antitumour T cell immunity induced by IR via the transforming growth factor-β1 (TGF-β1)/SMAD3 pathway. Positive antitumour immune response and immunosuppression were simultaneously triggered by a single 15 Gy dose of local tumour irradiation. PTTG1 knockdown weakened invasive capacity and promoted the immune response balance induced by IR to tilt towards active immunity, which contributed to reduce metastasis and prolonged overall survival (OS) in orthotopic LLC tumour-bearing mouse. SIGNIFICANCE Targeted blockade of PTTG1 and the TGF-β1/SMAD3 pathway may ameliorate the immunosuppressive TME and enhance the systemic antitumour immune response induced by a single high-dose IR treatment.
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Affiliation(s)
- Zhengting Chen
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, PR China; Key Laboratory of Lung Cancer Research of Yunnan Province, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Center, Kunming, Yunnan 650118, PR China
| | - Ke Cao
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, PR China; Key Laboratory of Lung Cancer Research of Yunnan Province, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Center, Kunming, Yunnan 650118, PR China
| | - Yu Hou
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, PR China
| | - Fei Lu
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, PR China
| | - Lan Li
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, PR China
| | - Li Wang
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, PR China
| | - Yaoxiong Xia
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, PR China
| | - Lan Zhang
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, PR China
| | - Haixia Chen
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, PR China; Key Laboratory of Lung Cancer Research of Yunnan Province, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Center, Kunming, Yunnan 650118, PR China
| | - Rong Li
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, PR China; Key Laboratory of Lung Cancer Research of Yunnan Province, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Center, Kunming, Yunnan 650118, PR China
| | - Li Chang
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, PR China.
| | - Wenhui Li
- Department of Radiation Oncology, The Third Affiliated Hospital of Kunming Medical University/Yunnan Cancer Hospital, PR China.
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Optimization of a Luciferase-Expressing Non-Invasive Intrapleural Model of Malignant Mesothelioma in Immunocompetent Mice. Cancers (Basel) 2020; 12:cancers12082136. [PMID: 32752156 PMCID: PMC7465989 DOI: 10.3390/cancers12082136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 12/16/2022] Open
Abstract
Malignant Pleural Mesothelioma (MPM) is an aggressive tumor of the pleural lining that is usually identified at advanced stages and resistant to current therapies. Appropriate pre-clinical mouse tumor models are of pivotal importance to study its biology. Usually, tumor cells have been injected intraperitoneally or subcutaneously. Using three available murine mesothelioma cell lines with different histotypes (sarcomatoid, biphasic, epithelioid), we have set up a simplified model of in vivo growth orthotopically by inoculating tumor cells directly in the thorax with a minimally invasive procedure. Mesothelioma tumors grew along the pleura and spread on the superficial areas of the lungs, but no masses were found outside the thoracic cavity. As observed in human MPM, tumors were highly infiltrated by macrophages and T cells. The luciferase-expressing cells can be visualized in vivo by bioluminescent optical imaging to precisely quantify tumor growth over time. Notably, the bioluminescence signal detected in vivo correctly matched the tumor burden quantified with classical histology. In contrast, the subcutaneous or intraperitoneal growth of these mesothelioma cells was considered either non-representative of the human disease or unreliable to precisely quantify tumor load. Our non-invasive in vivo model of mesothelioma is simple and reproducible, and it reliably recapitulates the human disease.
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Huang Y, Lu Y, Vadlamudi M, Zhao S, Felmlee M, Rahimian R, Guo X. Intrapulmonary inoculation of multicellular spheroids to construct an orthotopic lung cancer xenograft model that mimics four clinical stages of non-small cell lung cancer. J Pharmacol Toxicol Methods 2020; 104:106885. [PMID: 32531198 DOI: 10.1016/j.vascn.2020.106885] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 06/05/2020] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Lung cancer leads in mortality among all types of cancer in US and Non-small cell lung cancer (NSCLC) is the major type of lung cancer. Mice models of lung cancer based on subcutaneous or orthotopic inoculation of cancer cell suspension do not adequately mimic the progression of lung cancer in clinic. METHODS A549-iRFP cells (human NSCLC adenocarcinoma) were cultured to form multicellular spheroids (MCS), which were then inoculated intrapulmonarily into male athymic nude mice. The xenograft cancer development was monitored by in vivo fluorescent imaging and validated by open-chest anatomy, ex vivo fluorescent imaging, and histological studies. RESULTS The newly developed orthotopic xenograft model of lung cancer simulated all four clinical stages of NSCLC progression over one month: Stage 1) localized tumor at the inoculation site, Stage 2) multiple tumor nodules or larger tumor nodule on the same side of the lung, Stage 3) cancer growth on heart surface, and Stage 4) metastatic cancer on both sides of the lung. The model yielded high rates of postoperative survival (100%) and parenchymal tumor establishment (88.9%). The roughness of the inoculated MCS associated negatively with the time needed to develop metastatic cancer (p = .0299). DISCUSSION This new orthotopic xenograft model of NSCLC would facilitate the development of medications to treat lung cancer.
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Affiliation(s)
- Yingbo Huang
- Department of Pharmaceutics and Medicinal Chemistry, Thomas J Long School of Pharmacy and Health Sciences, University of the Pacific, 751 Brookside Road, Stockton, CA 95211, USA.
| | - Yifan Lu
- Department of Pharmaceutics and Medicinal Chemistry, Thomas J Long School of Pharmacy and Health Sciences, University of the Pacific, 751 Brookside Road, Stockton, CA 95211, USA.
| | - Mallika Vadlamudi
- Department of Pharmaceutics and Medicinal Chemistry, Thomas J Long School of Pharmacy and Health Sciences, University of the Pacific, 751 Brookside Road, Stockton, CA 95211, USA.
| | - Shen Zhao
- Department of Pharmaceutics and Medicinal Chemistry, Thomas J Long School of Pharmacy and Health Sciences, University of the Pacific, 751 Brookside Road, Stockton, CA 95211, USA.
| | - Melanie Felmlee
- Department of Pharmaceutics and Medicinal Chemistry, Thomas J Long School of Pharmacy and Health Sciences, University of the Pacific, 751 Brookside Road, Stockton, CA 95211, USA.
| | - Roshanak Rahimian
- Department of Physiology and Pharmacology, Thomas J Long School of Pharmacy and Health Sciences, University of the Pacific, 751 Brookside Road, Stockton, CA 95211, USA.
| | - Xin Guo
- Department of Pharmaceutics and Medicinal Chemistry, Thomas J Long School of Pharmacy and Health Sciences, University of the Pacific, 751 Brookside Road, Stockton, CA 95211, USA.
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12
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Kimura K, Matsumoto S, Harada T, Morii E, Nagatomo I, Shintani Y, Kikuchi A. ARL4C is associated with initiation and progression of lung adenocarcinoma and represents a therapeutic target. Cancer Sci 2020; 111:951-961. [PMID: 31925985 PMCID: PMC7060486 DOI: 10.1111/cas.14303] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/26/2019] [Accepted: 12/23/2019] [Indexed: 02/06/2023] Open
Abstract
Lung adenocarcinoma is the most common histological type of lung cancer and is classified into adenocarcinoma in situ (AIS), minimally invasive adenocarcinoma (MIA) and invasive adenocarcinoma (IA). Atypical adenomatous hyperplasia (AAH) lesions are possible precursors to adenocarcinoma. However, the mechanism underlying the stepwise continuum of lung adenocarcinoma is unclear. In this study, the involvement of ADP‐ribosylation factor (ARF)‐like (ARL) 4C (ARL4C), a member of the small GTP‐binding protein family, in the progression of lung adenocarcinoma and the possibility of ARL4C as a molecular target for lung cancer therapy were explored. ARL4C was frequently expressed in AAH and ARL4C expression in immortalized human small airway epithelial cells promoted cell proliferation and suppressed cell death. In addition, ARL4C was expressed with increased frequency in AIS, MIA and IA in a stage‐dependent manner, and the expression was correlated with histologic grade, fluorine‐18 fluorodeoxyglucose uptake and poor prognosis. An anti–sense oligonucleotide (ASO) against ARL4C (ARL4C ASO‐1316) inhibited RAS‐related C3 botulinum toxin substrate activity and nuclear import of Yes‐associated protein and transcriptional coactivator with PDZ‐binding motif, and suppressed in vitro proliferation and migration of lung cancer cells with KRAS or epidermal growth factor receptor (EGFR) mutations. In addition, transbronchial administration of ARL4C ASO‐1316 suppressed orthotopic tumor formation induced by these cancer cells. Thus, ARL4C is involved in the initiation of the premalignant stage and is associated with the stepwise continuum of lung adenocarcinoma. ARL4C ASO‐1316 would be useful for lung adenocarcinoma patients expressing ARL4C regardless of the KRAS or EGFR mutation.
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Affiliation(s)
- Kenji Kimura
- Department of Molecular Biology and Biochemistry, Graduate School of Medicine, Osaka University, Suita, Japan.,Department of General Thoracic Surgery, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Shinji Matsumoto
- Department of Molecular Biology and Biochemistry, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Takeshi Harada
- Department of Molecular Biology and Biochemistry, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Eiichi Morii
- Department of Pathology, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Izumi Nagatomo
- Department of Respiratory Medicine and Clinical Immunology, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Yasushi Shintani
- Department of General Thoracic Surgery, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Akira Kikuchi
- Department of Molecular Biology and Biochemistry, Graduate School of Medicine, Osaka University, Suita, Japan
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13
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Dual disruption of aldehyde dehydrogenases 1 and 3 promotes functional changes in the glutathione redox system and enhances chemosensitivity in nonsmall cell lung cancer. Oncogene 2020; 39:2756-2771. [PMID: 32015486 PMCID: PMC7098886 DOI: 10.1038/s41388-020-1184-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 01/18/2020] [Accepted: 01/23/2020] [Indexed: 12/20/2022]
Abstract
Aldehyde dehydrogenases (ALDHs) are multifunctional enzymes that oxidize diverse endogenous and exogenous aldehydes. We conducted a meta-analysis based on The Cancer Genome Atlas and Gene Expression Omnibus data and detected genetic alterations in ALDH1A1, ALDH1A3, or ALDH3A1, 86% of which were gene amplification or mRNA upregulation, in 31% of nonsmall cell lung cancers (NSCLCs). The expression of these isoenzymes impacted chemoresistance and shortened survival times in patients. We hypothesized that these enzymes provide an oxidative advantage for the persistence of NSCLC. To test this hypothesis, we used genetic and pharmacological approaches with DIMATE, an irreversible inhibitor of ALDH1/3. DIMATE showed cytotoxicity in 73% of NSCLC cell lines tested and demonstrated antitumor activity in orthotopic xenografts via hydroxynonenal-protein adduct accumulation, GSTO1-mediated depletion of glutathione and increased H2O2. Consistent with this result, ALDH1/3 disruption synergized with ROS-inducing agents or glutathione synthesis inhibitors to trigger cell death. In lung cancer xenografts with high to moderate cisplatin resistance, combination treatment with DIMATE promoted strong synergistic responses with tumor regression. These results indicate that NSCLCs with increased expression of ALDH1A1, ALDH1A3, or ALDH3A1 may be targeted by strategies involving inhibitors of these isoenzymes as monotherapy or in combination with chemotherapy to overcome patient-specific drug resistance.
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14
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Gai Y, Jiang Y, Long Y, Sun L, Liu Q, Qin C, Zhang Y, Zeng D, Lan X. Evaluation of an Integrin α vβ 3 and Aminopeptidase N Dual-Receptor Targeting Tracer for Breast Cancer Imaging. Mol Pharm 2020; 17:349-358. [PMID: 31829615 PMCID: PMC7486978 DOI: 10.1021/acs.molpharmaceut.9b01134] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Integrin αvβ3 and aminopeptidase N (APN, also known as CD13) are two important targets involved in the regulation of angiogenesis, tumor proliferation, invasion, and metastasis. In this study, we developed a heterodimeric tracer consisting of arginine-glycine-aspartic (RGD) and asparagine-glycine-arginine (NGR) peptides targeting αvβ3 and CD13, respectively, for PET imaging of breast cancer. The NGR peptide was first modified with N3-NOtB2 and then conjugated to BCN-PEG4-c(RGDyK) via copper-free click chemistry. The resulting precursor was purified and radiolabeled with gallium-68. Small-animal PET/CT imaging and post-imaging biodistribution studies were performed in mice bearing human breast cancer MCF-7, MDA-MB-231, MDA-MB-468, and MX-1 xenografts and pulmonary metastases models. The expression levels of αvβ3 and CD13 in tumors were checked via immunochemical staining. The heterodimeric tracer was successfully synthesized and radiolabeled with gallium-68 at a molar activity of 45-100 MBq/nmol at the end of synthesis. It demonstrated high in vitro and in vivo stability. In static PET/CT imaging studies, the MCF-7 tumor could be clearly visualized and exhibited higher uptake at 30 min post injection of 68Ga-NGR-RGD than that of either 68Ga-RGD or 68Ga-NGR alone. High specificity was shown in blocking studies using Arg-Gly-Asp (RGD) and Asp-Gly-Arg (NGR) peptides. The MCF-7 tumor exhibited the highest uptake of 68Ga-NGR-RGD followed by MDA-MB-231, MDA-MB-468, and MX-1 tumors. This was consistent with their expression levels of CD13 and αvβ3 as confirmed by western blot and immunohistochemical staining. Metastatic lesions in the lungs were clearly detectable on 68Ga-NGR-RGD PET/CT imaging in mouse models of pulmonary metastases. 68Ga-NGR-RGD, a CD13 and αvβ3 dual-receptor targeting tracer, showed higher binding avidities, targeting efficiency, and longer tumor retention time compared with monomeric 68Ga-NGR and 68Ga-RGD. Its promising in vivo performance makes it an ideal candidate for future clinical translation.
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Affiliation(s)
- Yongkang Gai
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Yaqun Jiang
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Yu Long
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Lingi Sun
- Center for Radiochemistry Research, Department of Diagnostic Radiology, Oregon Health & Science University, Portland, Oregon 97239, United States
| | - Qingyao Liu
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Chunxia Qin
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Yongxue Zhang
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Dexing Zeng
- Center for Radiochemistry Research, Department of Diagnostic Radiology, Oregon Health & Science University, Portland, Oregon 97239, United States
| | - Xiaoli Lan
- Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
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15
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Li S, Shen L, Huang L, Lei S, Cai X, Breitzig M, Zhang B, Yang A, Ji W, Huang M, Zheng Q, Sun H, Wang F. PTBP1 enhances exon11a skipping in Mena pre-mRNA to promote migration and invasion in lung carcinoma cells. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2019; 1862:858-869. [PMID: 31075540 DOI: 10.1016/j.bbagrm.2019.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 04/16/2019] [Accepted: 04/18/2019] [Indexed: 12/13/2022]
Abstract
Alternative splicing (AS) events occur in the majority of human genes. AS in a single gene can give rise to different functions among multiple isoforms. Human ortholog of mammalian enabled (Mena) is a conserved regulator of actin dynamics that plays an important role in metastasis. Mena has been shown to have multiple splice variants in human tumor cells due to AS. However, the mechanism mediated Mena AS has not been elucidated. Here we showed that polypyrimidine tract-binding protein 1 (PTBP1) could modulate Mena AS. First, PTBP1 levels were elevated in metastatic lung cancer cells as well as during epithelial-mesenchymal transition (EMT) process. Then, knockdown of PTBP1 using shRNA inhibited migration and invasion of lung carcinoma cells and decreased the Mena exon11a skipping, whereas overexpression of PTBP1 had the opposite effects. The results of RNA pull-down assays and mutation analyses demonstrated that PTBP1 functionally targeted and physically interacted with polypyrimidine sequences on both upstream intron11 (TTTTCCCCTT) and downstream intron11a (TTTTTTTTTCTTT). In addition, the results of migration and invasion assays as well as detection of filopodia revealed that the effect of PTBP1 was reversed by knockdown of Mena but not Mena11a+. Overexpressed MenaΔ11a also rescued the PTBP1-induced migration and invasion. Taken together, our study provides a novel mechanism that PTBP1 modulates Mena exon11a skipping, and indicates that PTBP1 depends on the level of Mena11a- to promote lung cancer cells migration and invasion. The regulation of Mena AS may be a potential prognostic marker and a promising target for treatment of lung carcinoma.
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Affiliation(s)
- Shuaiguang Li
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Pharmacodynamics Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of pharmacy, Jinan University, Guangzhou 510632, China
| | - Lianghua Shen
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Pharmacodynamics Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of pharmacy, Jinan University, Guangzhou 510632, China
| | - Luyuan Huang
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institute of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
| | - Sijia Lei
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Pharmacodynamics Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of pharmacy, Jinan University, Guangzhou 510632, China
| | - Xingdong Cai
- Department of Respiratory, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China
| | - Mason Breitzig
- Department of Internal Medicine, Morsani College of Medicine, University of South Florida, 12901 Bruce B Downs Blvd, MDC 19, Tampa, FL 33612, USA
| | - Bin Zhang
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Pharmacodynamics Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of pharmacy, Jinan University, Guangzhou 510632, China
| | - Annan Yang
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Pharmacodynamics Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of pharmacy, Jinan University, Guangzhou 510632, China
| | - Wenzuo Ji
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Pharmacodynamics Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of pharmacy, Jinan University, Guangzhou 510632, China
| | - Meiyan Huang
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Pharmacodynamics Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of pharmacy, Jinan University, Guangzhou 510632, China
| | - Qing Zheng
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Pharmacodynamics Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of pharmacy, Jinan University, Guangzhou 510632, China
| | - Hanxiao Sun
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Pharmacodynamics Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of pharmacy, Jinan University, Guangzhou 510632, China
| | - Feng Wang
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 510632, China; Guangdong Provincial Key Laboratory of Pharmacodynamics Constituents of TCM and New Drugs Research, Jinan University, Guangzhou 510632, China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of pharmacy, Jinan University, Guangzhou 510632, China.
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16
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Huang Y, Lu Y, Vadlamudi M, Guo X. Development and Characterization of Clinically Relevant Non‐Small Cell Lung Cancer Mouse Model with Near‐Infrared Fluorescent 3D Spheroids. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.509.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yingbo Huang
- Pharmaceutics & Medicinal ChemistryUniversity of the PacificStocktonCA
| | - Yifan Lu
- Pharmaceutics & Medicinal ChemistryUniversity of the PacificStocktonCA
| | - Mallika Vadlamudi
- Pharmaceutics & Medicinal ChemistryUniversity of the PacificStocktonCA
| | - Xin Guo
- Pharmaceutics & Medicinal ChemistryUniversity of the PacificStocktonCA
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17
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Civit L, Theodorou I, Frey F, Weber H, Lingnau A, Gröber C, Blank M, Dambrune C, Stunden J, Beyer M, Schultze J, Latz E, Ducongé F, Kubbutat MHG, Mayer G. Targeting hormone refractory prostate cancer by in vivo selected DNA libraries in an orthotopic xenograft mouse model. Sci Rep 2019; 9:4976. [PMID: 30899039 PMCID: PMC6428855 DOI: 10.1038/s41598-019-41460-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 03/08/2019] [Indexed: 12/11/2022] Open
Abstract
The targeting of specific tissue is a major challenge for the effective use of therapeutics and agents mediating this targeting are strongly demanded. We report here on an in vivo selection technology that enables the de novo identification of pegylated DNA aptamers pursuing tissue sites harbouring a hormone refractory prostate tumour. To this end, two libraries, one of which bearing an 11 kDa polyethylene glycol (PEG) modification, were used in an orthotopic xenograft prostate tumour mouse model for the selection process. Next-generation sequencing revealed an in vivo enriched pegylated but not a naïve DNA aptamer recognising prostate cancer tissue implanted either subcutaneous or orthotopically in mice. This aptamer represents a valuable and cost-effective tool for the development of targeted therapies for prostate cancer. The described selection strategy and its analysis is not limited to prostate cancer but will be adaptable to various tissues, tumours, and metastases. This opens the path towards DNA aptamers being experimentally and clinically engaged as molecules for developing targeted therapy strategies.
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Affiliation(s)
- Laia Civit
- Chemical Biology and Chemical Genetics, Life and Medical Sciences (LIMES) Institute, University of Bonn, Gerhard-Domagk-Str. 1, 53121, Bonn, Germany
| | - Ioanna Theodorou
- CEA, DRT, Institut de biologie François-Jacob, Molecular Imaging Research Center (MIRCen), UMR CNRS 9199, 18 Route du Panorama, 92260, Roses, France
| | - Franziska Frey
- Chemical Biology and Chemical Genetics, Life and Medical Sciences (LIMES) Institute, University of Bonn, Gerhard-Domagk-Str. 1, 53121, Bonn, Germany
| | - Holger Weber
- KTB Tumorforschungsgesellschaft mbH, Research Division ProQinase, Breisacher Str. 117, 79106, Freiburg, Germany.,ProQinase GmbH, Breisacher Straße 117, 79106, Freiburg, Germany
| | - Andreas Lingnau
- KTB Tumorforschungsgesellschaft mbH, Research Division ProQinase, Breisacher Str. 117, 79106, Freiburg, Germany.,Genmab B.V., Yalelaan 60, 3584 CM, Utrecht, The Netherlands
| | - Carsten Gröber
- AptaIT GmbH, Am Klopferspitz 19a, 82152, Planegg, Martinsried, Germany
| | - Michael Blank
- AptaIT GmbH, Am Klopferspitz 19a, 82152, Planegg, Martinsried, Germany
| | - Chloé Dambrune
- CEA, DRT, Institut de biologie François-Jacob, Molecular Imaging Research Center (MIRCen), UMR CNRS 9199, 18 Route du Panorama, 92260, Roses, France
| | - James Stunden
- Institute of Innate Immunity, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany
| | - Marc Beyer
- Genomics and Immunoregulation, Life and Medical Sciences (LIMES) Institute, University of Bonn, Carl-Troll-Straße 31, 53115, Bonn, Germany.,Platform for Single Cell Genomics and Epigenomics at the DZNE and the University of Bonn, Sigmund-Freud-Str. 27, 53127, Bonn, Germany.,Molecular Immunology in Neurodegeneration, German Center for Neurodegenerative Diseases (DZNE), Sigmund-Freud-Str. 27, 53127, Bonn, Germany
| | - Joachim Schultze
- Genomics and Immunoregulation, Life and Medical Sciences (LIMES) Institute, University of Bonn, Carl-Troll-Straße 31, 53115, Bonn, Germany.,Platform for Single Cell Genomics and Epigenomics at the DZNE and the University of Bonn, Sigmund-Freud-Str. 27, 53127, Bonn, Germany
| | - Eicke Latz
- Institute of Innate Immunity, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127, Bonn, Germany
| | - Frédéric Ducongé
- CEA, DRT, Institut de biologie François-Jacob, Molecular Imaging Research Center (MIRCen), UMR CNRS 9199, 18 Route du Panorama, 92260, Roses, France
| | - Michael H G Kubbutat
- KTB Tumorforschungsgesellschaft mbH, Research Division ProQinase, Breisacher Str. 117, 79106, Freiburg, Germany.,ProQinase GmbH, Breisacher Straße 117, 79106, Freiburg, Germany
| | - Günter Mayer
- Chemical Biology and Chemical Genetics, Life and Medical Sciences (LIMES) Institute, University of Bonn, Gerhard-Domagk-Str. 1, 53121, Bonn, Germany. .,Center of Aptamer Research and Development (CARD), University of Bonn, Gerhard-Domagk Str. 1, 53121, Bonn, Germany.
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18
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Sosa Iglesias V, van Hoof SJ, Vaniqui A, Schyns LE, Lieuwes N, Yaromina A, Spiegelberg L, Groot AJ, Verhaegen F, Theys J, Dubois L, Vooijs M. An orthotopic non-small cell lung cancer model for image-guided small animal radiotherapy platforms. Br J Radiol 2018; 92:20180476. [PMID: 30465693 DOI: 10.1259/bjr.20180476] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
METHODS: An orthotopic non-small cell lung cancer model in NMRI-nude mice was established to investigate the complementary information acquired from 80 kVp microcone-beam CT (micro-CBCT) and bioluminescence imaging (BLI) using different angles and filter settings. Different micro-CBCT-based radiation-delivery plans were evaluated based on their dose-volume histogram metrics of tumor and organs at risk to select the optimal treatment plan. RESULTS: H1299 cell suspensions injected directly into the lung render exponentially growing single tumor nodules whose CBCT-based volume quantification strongly correlated with BLI-integrated intensity. Parallel-opposed single angle beam plans through a single lung are preferred for smaller tumors, whereas for larger tumors, plans that spread the radiation dose across healthy tissues are favored. CONCLUSIONS: Closely mimicking a clinical setting for lung cancer with highly advanced preclinical radiation treatment planning is possible in mice developing orthotopic lung tumors. ADVANCES IN KNOWLEDGE: BLI and CBCT imaging of orthotopic lung tumors provide complementary information in a temporal manner. The optimal radiotherapy plan is tumor volume-dependent.
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Affiliation(s)
- Venus Sosa Iglesias
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | | | - Ana Vaniqui
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Lotte Ejr Schyns
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Natasja Lieuwes
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Ala Yaromina
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Linda Spiegelberg
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Arjan J Groot
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Frank Verhaegen
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Jan Theys
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Ludwig Dubois
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
| | - Marc Vooijs
- 1 Department of Radiotherapy, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Centre , Maastricht , The Netherlands
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19
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Aktar R, Dietrich A, Tillner F, Kotb S, Löck S, Willers H, Baumann M, Krause M, Bütof R. Pre-clinical imaging for establishment and comparison of orthotopic non-small cell lung carcinoma: in search for models reflecting clinical scenarios. Br J Radiol 2018; 92:20180539. [PMID: 30215546 DOI: 10.1259/bjr.20180539] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE: Clinically relevant animal models of non-small cell lung carcinoma (NSCLC) are required for the validation of novel treatments. We compared two different orthotopic transplantation techniques as well as imaging modalities to identify suitable mouse models mimicking clinical scenarios. METHODS: We used three genomically diverse NSCLC cell lines [National Cancer Institute (NCI)-H1703 adenosquamous cell carcinoma, NCI-H23 adenocarcinoma and A549 adenocarcinoma) for implanting tumour cells either as spheroids or cell suspension into lung parenchyma. Bioluminescence imaging (BLI) and contrast-enhanced cone beam CT (CBCT) were performed twice weekly to monitor tumour growth. Tumour histological data and microenvironmental parameters were determined. RESULTS: Tumour development after spheroid-based transplantation differs probably due to the integrity of spheroids, as H1703 developed single localised nodules, whereas H23 showed diffuse metastatic spread starting early after transplantation. A549 transplantation as cell suspension with the help of a stereotactic system was associated with initial single localised tumour growth and eventual metastatic spread. Imaging techniques were successfully applied to monitor longitudinal tumour growth: BLI revealed highly sensitive qualitative data, whereas CBCT was associated with less sensitive quantitative data. Histology revealed significant model-dependent heterogeneity in proliferation, hypoxia, perfusion and necrosis. CONCLUSION: Our developed orthotopic NSCLC tumours have similarity with biological growth behaviour comparable to that seen in the clinic and could therefore be used as attractive models to study tumour biology and evaluate new therapeutic strategies. The use of human cancer cell lines facilitates testing of different genomic tumour profiles that may affect treatment outcomes. ADVANCES IN KNOWLEDGE: The combination of different imaging modalities to identify tumour growth with subsequent use in treatment planning and orthotopic transplantation techniques to develop initially single lesions to ultimate metastases pave the way towards representative pre-clinical NSCLC models for experimental testing of novel therapeutic options in future studies.
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Affiliation(s)
- Rozina Aktar
- 1 OncoRay ̶ National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf , Dresden , Germany.,2 German Cancer Consortium (DKTK), Partner Site Dresden , Dresden , Germany.,3 German Cancer Research Center (DKFZ) , Heidelberg , Germany
| | - Antje Dietrich
- 1 OncoRay ̶ National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf , Dresden , Germany.,2 German Cancer Consortium (DKTK), Partner Site Dresden , Dresden , Germany.,3 German Cancer Research Center (DKFZ) , Heidelberg , Germany
| | - Falk Tillner
- 1 OncoRay ̶ National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf , Dresden , Germany.,4 Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden , Dresden , Germany.,5 Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology ̶ OncoRay , Dresden , Germany
| | - Shady Kotb
- 1 OncoRay ̶ National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf , Dresden , Germany.,2 German Cancer Consortium (DKTK), Partner Site Dresden , Dresden , Germany.,3 German Cancer Research Center (DKFZ) , Heidelberg , Germany
| | - Steffen Löck
- 1 OncoRay ̶ National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf , Dresden , Germany.,2 German Cancer Consortium (DKTK), Partner Site Dresden , Dresden , Germany.,3 German Cancer Research Center (DKFZ) , Heidelberg , Germany.,4 Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden , Dresden , Germany
| | - Henning Willers
- 6 Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School , Boston, MA , USA
| | - Michael Baumann
- 1 OncoRay ̶ National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf , Dresden , Germany.,2 German Cancer Consortium (DKTK), Partner Site Dresden , Dresden , Germany.,3 German Cancer Research Center (DKFZ) , Heidelberg , Germany.,4 Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden , Dresden , Germany.,5 Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology ̶ OncoRay , Dresden , Germany
| | - Mechthild Krause
- 1 OncoRay ̶ National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf , Dresden , Germany.,2 German Cancer Consortium (DKTK), Partner Site Dresden , Dresden , Germany.,3 German Cancer Research Center (DKFZ) , Heidelberg , Germany.,4 Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden , Dresden , Germany.,5 Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiooncology ̶ OncoRay , Dresden , Germany.,7 National Center for Tumor Diseases (NCT), Partner Site Dresden, Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany, and; Helmholtz Association/Helmholtz-Zentrum Dresden-Rossendorf (HZDR) , Dresden , Germany
| | - Rebecca Bütof
- 1 OncoRay ̶ National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf , Dresden , Germany.,3 German Cancer Research Center (DKFZ) , Heidelberg , Germany.,4 Department of Radiotherapy and Radiation Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden , Dresden , Germany.,7 National Center for Tumor Diseases (NCT), Partner Site Dresden, Germany: German Cancer Research Center (DKFZ), Heidelberg, Germany; Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany, and; Helmholtz Association/Helmholtz-Zentrum Dresden-Rossendorf (HZDR) , Dresden , Germany
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20
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A fully human CXCR4 antibody demonstrates diagnostic utility and therapeutic efficacy in solid tumor xenografts. Oncotarget 2017; 7:12344-58. [PMID: 26848769 PMCID: PMC4914289 DOI: 10.18632/oncotarget.7111] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 01/15/2016] [Indexed: 12/27/2022] Open
Abstract
For physiologically important cancer therapeutic targets, use of non-invasive imaging for therapeutic guidance and monitoring may improve outcomes for treated patients. The CXC chemokine receptor 4 (CXCR4) is overexpressed in many cancers including non-small cell lung cancer (NSCLC) and triple negative breast cancer (TNBC). CXCR4 overexpression contributes to tumor growth, progression and metastasis. There are several CXCR4-targeted therapeutic agents currently in clinical trials. Since CXCR4 is also crucial for normal biological functions, its prolonged inhibition could lead to unwanted toxicities. While CXCR4-targeted imaging agents and inhibitors have been reported and evaluated independently, there are currently no studies demonstrating CXCR4-targeted imaging for therapeutic guidance. Monoclonal antibodies (mAbs) are commonly used for cancer therapy and imaging. Here, an 89Zr-labeled human CXCR4-mAb (89Zr-CXCR4-mAb) was evaluated for detection of CXCR4 expression with positron emission tomography (PET) while its native unmodified analogue was evaluated for therapy in relevant models of NSCLC and TNBC. In vitro and in vivo evaluation of 89Zr-CXCR4-mAb showed enhanced uptake in NSCLC xenografts with a high expression of CXCR4. It also had the ability to detect lymph node metastases in an experimental model of metastatic TNBC. Treatment of high and low CXCR4 expressing NSCLC and TNBC xenografts with CXCR4-mAb demonstrated a therapeutic response correlating with the expression of CXCR4. Considering the key role of CXCR4 in normal biological functions, our results suggest that combination of 89Zr-CXCR4-mAb-PET with non-radiolabeled mAb therapy may provide a precision medicine approach for selecting patients with tumors that are likely to be responsive to this treatment.
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21
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Lai CW, Chen HL, Yen CC, Wang JL, Yang SH, Chen CM. Using Dual Fluorescence Reporting Genes to Establish an In Vivo Imaging Model of Orthotopic Lung Adenocarcinoma in Mice. Mol Imaging Biol 2017; 18:849-859. [PMID: 27197534 DOI: 10.1007/s11307-016-0967-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
PURPOSE Lung adenocarcinoma is characterized by a poor prognosis and high mortality worldwide. In this study, we purposed to use the live imaging techniques and a reporter gene that generates highly penetrative near-infrared (NIR) fluorescence to establish a preclinical animal model that allows in vivo monitoring of lung cancer development and provides a non-invasive tool for the research on lung cancer pathogenesis and therapeutic efficacy. PROCEDURES A human lung adenocarcinoma cell line (A549), which stably expressed the dual fluorescence reporting gene (pCAG-iRFP-2A-Venus), was used to generate subcutaneous or orthotopic lung cancer in nude mice. Cancer development was evaluated by live imaging via the NIR fluorescent signals from iRFP, and the signals were verified ex vivo by the green fluorescence of Venus from the gross lung. The tumor-bearing mice received miR-16 nucleic acid therapy by intranasal administration to demonstrate therapeutic efficacy in this live imaging system. RESULTS For the subcutaneous xenografts, the detection of iRFP fluorescent signals revealed delicate changes occurring during tumor growth that are not distinguishable by conventional methods of tumor measurement. For the orthotopic xenografts, the positive correlation between the in vivo iRFP signal from mice chests and the ex vivo green fluorescent signal from gross lung tumors and the results of the suppressed tumorigenesis by miR-16 treatment indicated that lung tumor size can be accurately quantified by the emission of NIR fluorescence. In addition, orthotopic lung tumor localization can be accurately visualized using iRFP fluorescence tomography in vivo, thus revealing the trafficking of lung tumor cells. CONCLUSIONS We introduced a novel dual fluorescence lung cancer model that provides a non-invasive option for preclinical research via the use of NIR fluorescence in live imaging of lung.
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Affiliation(s)
- Cheng-Wei Lai
- Department of Life Sciences, National Chung Hsing University, Taichung, 402, Taiwan
| | - Hsiao-Ling Chen
- Department of Bioresources, Da-Yeh University, Changhua, 515, Taiwan
| | - Chih-Ching Yen
- Department of Life Sciences, National Chung Hsing University, Taichung, 402, Taiwan
- Department of Internal Medicine, China Medical University Hospital, Taichung, 404, Taiwan
| | - Jiun-Long Wang
- Department of Life Sciences, National Chung Hsing University, Taichung, 402, Taiwan
- Division of Chest Medicine, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung, 407, Taiwan
| | - Shang-Hsun Yang
- Department of Physiology, and Institute of Basic Medical Sciences, National Cheng Kung University, Tainan, 701, Taiwan
| | - Chuan-Mu Chen
- Department of Life Sciences, National Chung Hsing University, Taichung, 402, Taiwan.
- Rong-Hsing Translational Medicine Center, iEGG Center, National Chung Hsing University, Taichung, 402, Taiwan.
- Agricultural Biotechnology Center, National Chung Hsing University, No. 250, Kuo Kuang Rd., Taichung, 402, Taiwan.
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22
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Clémenson C, Chargari C, Liu W, Mondini M, Ferté C, Burbridge MF, Cattan V, Jacquet-Bescond A, Deutsch E. The MET/AXL/FGFR Inhibitor S49076 Impairs Aurora B Activity and Improves the Antitumor Efficacy of Radiotherapy. Mol Cancer Ther 2017; 16:2107-2119. [PMID: 28619752 DOI: 10.1158/1535-7163.mct-17-0112] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 04/21/2017] [Accepted: 06/05/2017] [Indexed: 11/16/2022]
Abstract
Several therapeutic agents targeting HGF/MET signaling are under clinical development as single agents or in combination, notably with anti-EGFR therapies in non-small cell lung cancer (NSCLC). However, despite increasing data supporting a link between MET, irradiation, and cancer progression, no data regarding the combination of MET-targeting agents and radiotherapy are available from the clinic. S49076 is an oral ATP-competitive inhibitor of MET, AXL, and FGFR1-3 receptors that is currently in phase I/II clinical trials in combination with gefitinib in NSCLC patients whose tumors show resistance to EGFR inhibitors. Here, we studied the impact of S49076 on MET signaling, cell proliferation, and clonogenic survival in MET-dependent (GTL16 and U87-MG) and MET-independent (H441, H460, and A549) cells. Our data show that S49076 exerts its cytotoxic activity at low doses on MET-dependent cells through MET inhibition, whereas it inhibits growth of MET-independent cells at higher but clinically relevant doses by targeting Aurora B. Furthermore, we found that S49076 improves the antitumor efficacy of radiotherapy in both MET-dependent and MET-independent cell lines in vitro and in subcutaneous and orthotopic tumor models in vivo In conclusion, our study demonstrates that S49076 has dual antitumor activity and can be used in combination with radiotherapy for the treatment of both MET-dependent and MET-independent tumors. These results support the evaluation of combined treatment of S49076 with radiation in clinical trials without patient selection based on the tumor MET dependency status. Mol Cancer Ther; 16(10); 2107-19. ©2017 AACR.
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Affiliation(s)
- Céline Clémenson
- Gustave Roussy, Université Paris-Saclay, UMR Radiothérapie Moléculaire, Villejuif, France.,INSERM, U1030, SIRIC Socrates, DHU TORINO, Villejuif, France
| | - Cyrus Chargari
- Gustave Roussy, Université Paris-Saclay, UMR Radiothérapie Moléculaire, Villejuif, France.,INSERM, U1030, SIRIC Socrates, DHU TORINO, Villejuif, France.,Gustave Roussy, Université Paris-Saclay, Département de Radiothérapie, Villejuif, France.,Institut de Recherche Biomédicale des Armées, Brétigny-Sur-Orge, France
| | - Winchygn Liu
- Gustave Roussy, Université Paris-Saclay, UMR Radiothérapie Moléculaire, Villejuif, France.,INSERM, U1030, SIRIC Socrates, DHU TORINO, Villejuif, France
| | - Michele Mondini
- Gustave Roussy, Université Paris-Saclay, UMR Radiothérapie Moléculaire, Villejuif, France.,INSERM, U1030, SIRIC Socrates, DHU TORINO, Villejuif, France
| | - Charles Ferté
- Gustave Roussy, Université Paris-Saclay, UMR Radiothérapie Moléculaire, Villejuif, France.,INSERM, U1030, SIRIC Socrates, DHU TORINO, Villejuif, France.,INSERM, U981, Villejuif, France
| | - Mike F Burbridge
- Oncology Unit, Institut de Recherches Internationales Servier, Suresnes, France
| | - Valérie Cattan
- Oncology Unit, Institut de Recherches Internationales Servier, Suresnes, France
| | | | - Eric Deutsch
- Gustave Roussy, Université Paris-Saclay, UMR Radiothérapie Moléculaire, Villejuif, France. .,INSERM, U1030, SIRIC Socrates, DHU TORINO, Villejuif, France.,Gustave Roussy, Université Paris-Saclay, Département de Radiothérapie, Villejuif, France.,Univ Paris Sud, Université Paris-Saclay, Le Kremlin-Bicêtre, France
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23
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Okimoto RA, Breitenbuecher F, Olivas VR, Wu W, Gini B, Hofree M, Asthana S, Hrustanovic G, Flanagan J, Tulpule A, Blakely CM, Haringsma HJ, Simmons AD, Gowen K, Suh J, Miller VA, Ali S, Schuler M, Bivona TG. Inactivation of Capicua drives cancer metastasis. Nat Genet 2017; 49:87-96. [PMID: 27869830 PMCID: PMC5195898 DOI: 10.1038/ng.3728] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 10/25/2016] [Indexed: 12/23/2022]
Abstract
Metastasis is the leading cause of death in people with lung cancer, yet the molecular effectors underlying tumor dissemination remain poorly defined. Through the development of an in vivo spontaneous lung cancer metastasis model, we show that the developmentally regulated transcriptional repressor Capicua (CIC) suppresses invasion and metastasis. Inactivation of CIC relieves repression of its effector ETV4, driving ETV4-mediated upregulation of MMP24, which is necessary and sufficient for metastasis. Loss of CIC, or an increase in levels of its effectors ETV4 and MMP24, is a biomarker of tumor progression and worse outcomes in people with lung and/or gastric cancer. Our findings reveal CIC as a conserved metastasis suppressor, highlighting new anti-metastatic strategies that could potentially improve patient outcomes.
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Affiliation(s)
- Ross A. Okimoto
- Department of Medicine, University of California, San Francisco, San Francisco, CA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - Frank Breitenbuecher
- Department of Medical Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany
| | - Victor R. Olivas
- Department of Medicine, University of California, San Francisco, San Francisco, CA
| | - Wei Wu
- Department of Medicine, University of California, San Francisco, San Francisco, CA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - Beatrice Gini
- Department of Medicine, University of California, San Francisco, San Francisco, CA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - Matan Hofree
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts
| | - Saurabh Asthana
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - Gorjan Hrustanovic
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - Jennifer Flanagan
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - Asmin Tulpule
- Department of Medicine, University of California, San Francisco, San Francisco, CA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | - Collin M. Blakely
- Department of Medicine, University of California, San Francisco, San Francisco, CA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
| | | | | | - Kyle Gowen
- Foundation Medicine, Cambridge, Massachusetts
| | - James Suh
- Foundation Medicine, Cambridge, Massachusetts
| | | | - Siraj Ali
- Foundation Medicine, Cambridge, Massachusetts
| | - Martin Schuler
- Department of Medical Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany
- German Cancer Consortium (DKTK), Heidelberg, Germany
| | - Trever G. Bivona
- Department of Medicine, University of California, San Francisco, San Francisco, CA
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA
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24
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Swennenhuis JF, van Dalum G, Zeune LL, Terstappen LWMM. Improving the CellSearch® system. Expert Rev Mol Diagn 2016; 16:1291-1305. [PMID: 27797592 DOI: 10.1080/14737159.2016.1255144] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION The CellSearch® CTC test enumerates tumor cells present in 7.5 ml blood of cancer patients. improvements, extensions and different utilities of the cellsearch system are discussed in this paper. Areas covered: This paper describes work performed with the CellSearch system, which go beyond the normal scope of the test. All results from searches with the search term 'CellSearch' from Web of Science and PubMed were categorized and discussed. Expert commentary: The CellSearch Circulating Tumor Cell test captures and identifies tumor cells in blood that are associated with poor clinical outcome. How to best use CTC in clinical practice is being explored in many clinical trials. The ability to extract information from the CTC to guide therapy will expand the potential clinical utility of CTC.
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Affiliation(s)
- J F Swennenhuis
- a Medical Cell BioPhysics , University of Twente , Enschede , The Netherlands
| | - G van Dalum
- a Medical Cell BioPhysics , University of Twente , Enschede , The Netherlands
| | - L L Zeune
- a Medical Cell BioPhysics , University of Twente , Enschede , The Netherlands
| | - L W M M Terstappen
- a Medical Cell BioPhysics , University of Twente , Enschede , The Netherlands
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25
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Taromi S, Kayser G, von Elverfeldt D, Reichardt W, Braun F, Weber WA, Zeiser R, Burger M. An orthotopic mouse model of small cell lung cancer reflects the clinical course in patients. Clin Exp Metastasis 2016; 33:651-60. [PMID: 27380917 DOI: 10.1007/s10585-016-9808-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 06/29/2016] [Indexed: 01/01/2023]
Abstract
Small cell lung cancer (SCLC) is a highly aggressive subtype of lung cancer with very poor prognosis due to early metastatic spread and development of chemoresistance. In the last 30 years the study of SCLC has been constrained by a lack of primary human tumor specimen thus highlighting the need of a suitable mouse model. In this article we present the establishment of an orthotopic xenograft mouse model which accurately reproduced the clinical course of SCLC. Orthotopic implantation enabled engraftment of primary lung tumors in all injected mice. Furthermore, immunodeficiency of mice allowed formation of spontaneous metastases in characteristic organs. Bioluminescence Imaging, Magnetic Resonance Imaging and Positron emission tomography were applied to monitor engraftment, metabolism and the exact growth of tumors over time. In order to mimic the extensive disease stage, mice were injected with aggressive human chemoresistant cells leading to development of chemoresistant tumors and early metastatic spread. As a proof of concept treatment of tumor-bearing mice with conventional chemotherapeutics reduced tumor volumes, but a complete regression of tumors was not achieved. By mimicking the extensive disease stage our mouse model can facilitate the study of mechanisms contributing to chemoresistance and metastasis formation, as well as drug screening and evaluation of new treatment strategies for SCLC patients.
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Affiliation(s)
- Sanaz Taromi
- Department of Hematology/Oncology and Stem Cell Transplantation, University Medical Center, Hugstetter Str. 55, 70106, Freiburg, Germany
| | - Gian Kayser
- Department of Pathology, University Medical Center, Freiburg, Germany
| | | | - Wilfried Reichardt
- Department of Radiology Medical Physics, University Medical Center, Freiburg, Germany
| | - Friederike Braun
- Institute of Nuclear Medicine, University Medical Center, Freiburg, Germany
| | - Wolfgang A Weber
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, USA.,Institute of Nuclear Medicine, University Medical Center, Freiburg, Germany
| | - Robert Zeiser
- Department of Hematology/Oncology and Stem Cell Transplantation, University Medical Center, Hugstetter Str. 55, 70106, Freiburg, Germany
| | - Meike Burger
- Department of Hematology/Oncology and Stem Cell Transplantation, University Medical Center, Hugstetter Str. 55, 70106, Freiburg, Germany. .,Faculty of Medical and Life Sciences, University Futwangen, Campus Schwenningen, Jakob-Kienzle-Str. 17, 78054, Villingen-Schwenningen, Germany.
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26
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Zhang Z, Wodzak M, Belzile O, Zhou H, Sishc B, Yan H, Stojadinovic S, Mason RP, Brekken RA, Chopra R, Story MD, Timmerman R, Saha D. Effective Rat Lung Tumor Model for Stereotactic Body Radiation Therapy. Radiat Res 2016; 185:616-22. [PMID: 27223828 PMCID: PMC4966888 DOI: 10.1667/rr14382.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Stereotactic body radiation therapy (SBRT) has found an important role in the treatment of patients with non-small cell lung cancer, demonstrating improvements in dose distribution and even tumor cure rates, particularly for early-stage disease. Despite its emerging clinical efficacy, SBRT has primarily evolved due to advances in medical imaging and more accurate dose delivery, leaving a void in knowledge of the fundamental biological mechanisms underlying its activity. Thus, there is a critical need for the development of orthotropic animal models to further probe the biology associated with high-dose-per-fraction treatment typical of SBRT. We report here on an improved surgically based methodology for generating solitary intrapulmonary nodule tumors, which can be treated with simulated SBRT using the X-RAD 225Cx small animal irradiator and Small Animal RadioTherapy (SmART) Plan treatment system. Over 90% of rats developed solitary tumors in the right lung. Furthermore, the tumor response to radiation was monitored noninvasively via bioluminescence imaging (BLI), and complete ablation of tumor growth was achieved with 36 Gy (3 fractions of 12 Gy each). We report a reproducible, orthotopic, clinically relevant lung tumor model, which better mimics patient treatment regimens. This system can be utilized to further explore the underlying biological mechanisms relevant to SBRT and high-dose-per-fraction radiation exposure and to provide a useful model to explore the efficacy of radiation modifiers in the treatment of non-small cell lung cancer.
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Affiliation(s)
- Zhang Zhang
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
| | - Michelle Wodzak
- Department of Radiology, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
| | - Olivier Belzile
- Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
| | - Heling Zhou
- Department of Radiology, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
| | - Brock Sishc
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
| | - Hao Yan
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
| | - Strahinja Stojadinovic
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
| | - Ralph P. Mason
- Department of Radiology, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
| | - Rolf A. Brekken
- Department of Surgery and Pharmacology, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
| | - Rajiv Chopra
- Department of Radiology, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
| | - Michael D. Story
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
| | - Robert Timmerman
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
| | - Debabrata Saha
- Department of Radiation Oncology, University of Texas Southwestern Medical Center, Simmons Cancer Center, Dallas, Texas 75390-9187
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27
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Chargari C, Magne N, Guy JB, Rancoule C, Levy A, Goodman KA, Deutsch E. Optimize and refine therapeutic index in radiation therapy: Overview of a century. Cancer Treat Rev 2016; 45:58-67. [DOI: 10.1016/j.ctrv.2016.03.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 02/25/2016] [Accepted: 03/01/2016] [Indexed: 12/20/2022]
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28
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Terracina KP, Aoyagi T, Huang WC, Nagahashi M, Yamada A, Aoki K, Takabe K. Development of a metastatic murine colon cancer model. J Surg Res 2015; 199:106-14. [PMID: 26009494 DOI: 10.1016/j.jss.2015.04.030] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Revised: 03/20/2015] [Accepted: 04/09/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND It has now become clear that the complex interplay of cancer and the immune responses against it plays a critical role in the tumor microenvironment during cancer progression. As new targets for cancer treatment are being discovered and investigated, murine models used for preclinical studies need to include intact immune responses to provide a closer correlation with human cancer. We have recently developed a modified syngeneic orthotopic murine colon cancer model that mimics human colon cancer progression with consistent results. MATERIALS AND METHODS Tumors were created using the murine colon adenocarcinoma cell line, CT26, modified to overexpress the firefly luciferase gene (CT26-luc1), which allowed real-time in vivo monitoring of tumor burden when the substrate, D-luciferin, was injected intraperitoneally using the In Vivo Imaging System. Mice are Balb/c (Harlan), syngeneic with the CT26-luc1 cells. Cells are injected submucosally, suspended in Matrigel, into the cecum wall under direct visualization. RESULTS The model has demonstrated consistent implantation in the cecum. In vivo bioluminescence allowed real-time monitoring of total tumor burden. Perioperative preparation had a significant impact on reproducibility of the model. Finally, total tumor burden quantified with bioluminescence enabled estimation of lymph node metastasis ex vivo. CONCLUSIONS This method maintains an intact immune response and closely approximates the clinical tumor microenvironment. It is expected to provide an invaluable murine metastatic colon cancer model particularly in preclinical studies for drug development targeting those mechanisms.
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Affiliation(s)
- Krista P Terracina
- Division of Surgical Oncology, Department of Surgery, Virginia Commonwealth University School of Medicine and Massey Cancer Center, Richmond, Virginia
| | - Tomoyoshi Aoyagi
- Division of Surgical Oncology, Department of Surgery, Virginia Commonwealth University School of Medicine and Massey Cancer Center, Richmond, Virginia; Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, Virginia
| | - Wei-Ching Huang
- Division of Surgical Oncology, Department of Surgery, Virginia Commonwealth University School of Medicine and Massey Cancer Center, Richmond, Virginia; Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, Virginia
| | - Masayuki Nagahashi
- Division of Surgical Oncology, Department of Surgery, Virginia Commonwealth University School of Medicine and Massey Cancer Center, Richmond, Virginia; Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, Virginia
| | - Akimitsu Yamada
- Division of Surgical Oncology, Department of Surgery, Virginia Commonwealth University School of Medicine and Massey Cancer Center, Richmond, Virginia; Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, Virginia
| | - Kazunori Aoki
- Division of Gene and Immune Medicine, National Cancer Center Research Institute, Tokyo, Japan
| | - Kazuaki Takabe
- Division of Surgical Oncology, Department of Surgery, Virginia Commonwealth University School of Medicine and Massey Cancer Center, Richmond, Virginia; Department of Biochemistry and Molecular Biology, Virginia Commonwealth University School of Medicine, Richmond, Virginia.
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Zhong D, Ru Y, Wang Q, Zhang J, Zhang J, Wei J, Wu J, Yao L, Li X, Li X. Chimeric ubiquitin ligases inhibit non-small cell lung cancer via negative modulation of EGFR signaling. Cancer Lett 2015; 359:57-64. [DOI: 10.1016/j.canlet.2014.12.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 12/10/2014] [Accepted: 12/18/2014] [Indexed: 01/15/2023]
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Favaudon V, Caplier L, Monceau V, Pouzoulet F, Sayarath M, Fouillade C, Poupon MF, Brito I, Hupé P, Bourhis J, Hall J, Fontaine JJ, Vozenin MC. Ultrahigh dose-rate FLASH irradiation increases the differential response between normal and tumor tissue in mice. Sci Transl Med 2015; 6:245ra93. [PMID: 25031268 DOI: 10.1126/scitranslmed.3008973] [Citation(s) in RCA: 626] [Impact Index Per Article: 69.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In vitro studies suggested that sub-millisecond pulses of radiation elicit less genomic instability than continuous, protracted irradiation at the same total dose. To determine the potential of ultrahigh dose-rate irradiation in radiotherapy, we investigated lung fibrogenesis in C57BL/6J mice exposed either to short pulses (≤ 500 ms) of radiation delivered at ultrahigh dose rate (≥ 40 Gy/s, FLASH) or to conventional dose-rate irradiation (≤ 0.03 Gy/s, CONV) in single doses. The growth of human HBCx-12A and HEp-2 tumor xenografts in nude mice and syngeneic TC-1 Luc(+) orthotopic lung tumors in C57BL/6J mice was monitored under similar radiation conditions. CONV (15 Gy) triggered lung fibrosis associated with activation of the TGF-β (transforming growth factor-β) cascade, whereas no complications developed after doses of FLASH below 20 Gy for more than 36 weeks after irradiation. FLASH irradiation also spared normal smooth muscle and epithelial cells from acute radiation-induced apoptosis, which could be reinduced by administration of systemic TNF-α (tumor necrosis factor-α) before irradiation. In contrast, FLASH was as efficient as CONV in the repression of tumor growth. Together, these results suggest that FLASH radiotherapy might allow complete eradication of lung tumors and reduce the occurrence and severity of early and late complications affecting normal tissue.
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Affiliation(s)
- Vincent Favaudon
- Institut Curie, Centre de Recherche, 91405 Orsay, France. INSERM U612, 91405 Orsay, France.
| | - Laura Caplier
- Pathology Laboratory, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, 94704 Maisons Alfort, France
| | - Virginie Monceau
- Université Paris-XI, 91405 Orsay, France. INSERM U1030, Institut Gustave-Roussy, 94805 Villejuif, France
| | - Frédéric Pouzoulet
- Institut Curie, Centre de Recherche, 91405 Orsay, France. INSERM U612, 91405 Orsay, France
| | - Mano Sayarath
- Institut Curie, Centre de Recherche, 91405 Orsay, France. INSERM U612, 91405 Orsay, France
| | - Charles Fouillade
- Institut Curie, Centre de Recherche, 91405 Orsay, France. INSERM U612, 91405 Orsay, France
| | - Marie-France Poupon
- Institut Curie, Centre de Recherche, 91405 Orsay, France. INSERM U612, 91405 Orsay, France
| | - Isabel Brito
- Institut Curie, Centre de Recherche, 75248 Paris 05, France. INSERM U900, 75248 Paris 05, France
| | - Philippe Hupé
- Institut Curie, Centre de Recherche, 75248 Paris 05, France. INSERM U900, 75248 Paris 05, France. Mines ParisTech, 77305 Fontainebleau, France. CNRS, UMR144, 75248 Paris 05, France
| | - Jean Bourhis
- Université Paris-XI, 91405 Orsay, France. INSERM U1030, Institut Gustave-Roussy, 94805 Villejuif, France. Radio-Oncologie/Radiothérapie, Centre Hospitalier Universitaire Vaudois, 1011 Lausanne, Switzerland
| | - Janet Hall
- Institut Curie, Centre de Recherche, 91405 Orsay, France. INSERM U612, 91405 Orsay, France
| | - Jean-Jacques Fontaine
- Pathology Laboratory, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, 94704 Maisons Alfort, France
| | - Marie-Catherine Vozenin
- Université Paris-XI, 91405 Orsay, France. INSERM U1030, Institut Gustave-Roussy, 94805 Villejuif, France. Radio-Oncologie/Radiothérapie, Centre Hospitalier Universitaire Vaudois, 1011 Lausanne, Switzerland. INSERM U967, Commissariat à l'Énergie Atomique (CEA), Division des Sciences du Vivant (DSV), Institut de Radiobiologie Cellulaire et Moléculaire (IRCM), 92265 Fontenay aux Roses, France
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Sato K, Nagaya T, Choyke PL, Kobayashi H. Near infrared photoimmunotherapy in the treatment of pleural disseminated NSCLC: preclinical experience. Theranostics 2015; 5:698-709. [PMID: 25897335 PMCID: PMC4402494 DOI: 10.7150/thno.11559] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Accepted: 02/23/2015] [Indexed: 12/20/2022] Open
Abstract
Pleural metastases are common in patients with advanced thoracic cancers and are a cause of considerable morbidity and mortality yet is difficult to treat. Near Infrared Photoimmunotherapy (NIR-PIT) is a cancer treatment that combines the specificity of intravenously injected antibodies for targeting tumors with the toxicity induced by photosensitizers after exposure to NIR-light. Herein, we evaluate the efficacy of NIR-PIT in a mouse model of pleural disseminated non-small cell lung carcinoma (NSCLC). In vitro and in vivo experiments were conducted with a HER2, luciferase and GFP expressing NSCLC cell line (Calu3-luc-GFP). An antibody-photosensitizer conjugate (APC) consisting of trastuzumab and a phthalocyanine dye, IRDye-700DX, was synthesized. In vitro NIR-PIT cytotoxicity was assessed with dead staining, luciferase activity, and GFP fluorescence intensity. In vivo NIR-PIT was performed in mice with tumors implanted intrathoracic cavity or in the flank, and assessed by tumor volume and/or bioluminescence and fluorescence thoracoscopy. In vitro NIR-PIT-induced cytotoxicity was light dose dependent. In vivo NIR-PIT led significant reductions in both tumor volume (p = 0.002 vs. APC) and luciferase activity (p = 0.0004 vs. APC) in a flank model, and prolonged survival (p < 0.0001). Bioluminescence indicated that NIR-PIT lead to significant reduction in pleural dissemination (1 day after PIT; p = 0.0180). Fluorescence thoracoscopy confirmed the NIR-PIT effect on disseminated pleural disease. In conclusion, NIR-PIT has the ability to effectively treat pleural metastases caused by NSCLC in mice. Thus, NIR-PIT is a promising therapy for pleural disseminated tumors.
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Lodhia KA, Hadley AM, Haluska P, Scott CL. Prioritizing therapeutic targets using patient-derived xenograft models. Biochim Biophys Acta Rev Cancer 2015; 1855:223-34. [PMID: 25783201 DOI: 10.1016/j.bbcan.2015.03.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 02/12/2015] [Accepted: 03/09/2015] [Indexed: 01/03/2023]
Abstract
Effective systemic treatment of cancer relies on the delivery of agents with optimal therapeutic potential. The molecular age of medicine has provided genomic tools that can identify a large number of potential therapeutic targets in individual patients, heralding the promise of personalized treatment. However, determining which potential targets actually drive tumor growth and should be prioritized for therapy is challenging. Indeed, reliable molecular matches of target and therapeutic agent have been stringently validated in the clinic for only a small number of targets. Patient-derived xenografts (PDXs) are tumor models developed in immunocompromised mice using tumor procured directly from the patient. As patient surrogates, PDX models represent a powerful tool for addressing individualized therapy. Challenges include humanizing the immune system of PDX models and ensuring high quality molecular annotation, in order to maximize insights for the clinic. Importantly, PDX can be sampled repeatedly and in parallel, to reveal clonal evolution, which may predict mechanisms of drug resistance and inform therapeutic strategy design.
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Affiliation(s)
- K A Lodhia
- Department of Oncology, Mayo Clinic, Rochester, MN, USA
| | - A M Hadley
- Stem Cells and Cancer Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
| | - P Haluska
- Department of Oncology, Mayo Clinic, Rochester, MN, USA
| | - C L Scott
- Stem Cells and Cancer Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia; Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia.
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Podetz-Pedersen KM, Vezys V, Somia NV, Russell SJ, McIvor RS. Cellular immune response against firefly luciferase after sleeping beauty-mediated gene transfer in vivo. Hum Gene Ther 2014; 25:955-65. [PMID: 25093708 PMCID: PMC4251089 DOI: 10.1089/hum.2014.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 08/01/2014] [Indexed: 12/12/2022] Open
Abstract
The Sleeping Beauty (SB) transposon system has been shown to mediate new gene sequence integration resulting in long-term expression. Here the effectiveness of hyperactive SB100X transposase was tested, and we found that hydrodynamic co-delivery of a firefly luciferase transposon (pT2/CaL) along with SB100X transposase (pCMV-SB100X) resulted in remarkably sustained, high levels of luciferase expression. However, after 4 weeks there was a rapid, animal-by-animal loss of luciferase expression that was not observed in immunodeficient mice. We hypothesized that this sustained, high-level luciferase expression achieved using the SB100X transposase elicits an immune response in pT2/CaL co-administered mice, which was supported by the rapid loss of luciferase expression upon challenge of previously treated animals and in naive animals adoptively transferred with splenocytes from previously treated animals. Specificity of the immune response to luciferase was demonstrated by increased cytokine expression in splenocytes after exposure to luciferase peptide in parallel with MHC I-luciferase peptide tetramer binding. This anti-luciferase immune response observed following continuous, high-level luciferase expression in vivo clearly impacts its use as an in vivo reporter. As both an immunogen and an extremely sensitive reporter, luciferase is also a useful model system for the study of immune responses following in vivo gene transfer and expression.
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Affiliation(s)
- Kelly M. Podetz-Pedersen
- Department of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, MN 55455
| | - Vaiva Vezys
- Department of Microbiology, Center for Immunology, University of Minnesota, Minneapolis, MN 55455
| | - Nikunj V. Somia
- Department of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, MN 55455
| | | | - R. Scott McIvor
- Department of Genetics, Cell Biology and Development, University of Minnesota, Minneapolis, MN 55455
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Sasportas LS, Hori SS, Pratx G, Gambhir SS. Detection and quantitation of circulating tumor cell dynamics by bioluminescence imaging in an orthotopic mammary carcinoma model. PLoS One 2014; 9:e105079. [PMID: 25188396 PMCID: PMC4154864 DOI: 10.1371/journal.pone.0105079] [Citation(s) in RCA: 11] [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: 04/27/2014] [Accepted: 07/20/2014] [Indexed: 01/15/2023] Open
Abstract
Circulating tumor cells (CTCs) have been detected in the bloodstream of both early-stage and advanced cancer patients. However, very little is know about the dynamics of CTCs during cancer progression and the clinical relevance of longitudinal CTC enumeration. To address this, we developed a simple bioluminescence imaging assay to detect CTCs in mouse models of metastasis. In a 4T1 orthotopic metastatic mammary carcinoma mouse model, we demonstrated that this quantitative method offers sensitivity down to 2 CTCs in 0.1-1mL blood samples and high specificity for CTCs originating from the primary tumor, independently of their epithelial status. In this model, we simultaneously monitored blood CTC dynamics, primary tumor growth, and lung metastasis progression over the course of 24 days. Early in tumor development, we observed low numbers of CTCs in blood samples (10-15 cells/100 µL) and demonstrated that CTC dynamics correlate with viable primary tumor growth. To our knowledge, these data represent the first reported use of bioluminescence imaging to detect CTCs and quantify their dynamics in any cancer mouse model. This new assay is opening the door to the study of CTC dynamics in a variety of animal models. These studies may inform clinical decision on the appropriate timing of blood sampling and value of longitudinal CTC enumeration in cancer patients.
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Affiliation(s)
- Laura Sarah Sasportas
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, California, United States of America
- Department of Bioengineering, Stanford University, Stanford, California, United States of America
| | - Sharon Seiko Hori
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, California, United States of America
| | - Guillem Pratx
- Department of Radiation Oncology, Stanford University, Stanford, California, United States of America
| | - Sanjiv Sam Gambhir
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, California, United States of America
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Immune-dependent antineoplastic effects of cisplatin plus pyridoxine in non-small-cell lung cancer. Oncogene 2014; 34:3053-62. [PMID: 25065595 DOI: 10.1038/onc.2014.234] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Revised: 06/24/2014] [Accepted: 06/24/2014] [Indexed: 02/07/2023]
Abstract
cis-Diamminedichloroplatinum(II) (CDDP), which is mostly referred to as cisplatin, is a widely used antineoplastic. The efficacy of cisplatin can be improved by combining it with the vitamin B6 precursor pyridoxine. Here, we evaluated the putative synergistic interaction of CDDP with pyridoxine in the treatment of an orthotopic mouse model of non-small-cell lung cancer (NSCLC). CDDP and pyridoxine exhibited hyperadditive therapeutic effects. However, this synergy was only observed in the context of an intact immune system and disappeared when the otherwise successful drug combination was applied to the same NSCLC cancer implanted in the lungs of athymic mice (which lack T lymphocytes). Immunocompetent mice that had been cured from NSCLC by the combined regimen of CDDP plus pyridoxine became resistant against subcutaneous rechallenge with the same (but not with an unrelated) cancer cell line. In vitro, CDDP and pyridoxine did not only cause synergistic killing of NSCLC cells but also elicited signs of immunogenic cell death including an endoplasmic reticulum stress response and exposure of calreticulin at the surface of the NSCLC cells. NSCLC cells treated with CDDP plus pyridoxine in vitro elicited a protective anticancer immune response upon their injection into immunocompetent mice. Altogether, these results suggest that the combined regimen of cisplatin plus pyridoxine mediates immune-dependent antineoplastic effects against NSCLC.
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Nakajima T, Anayama T, Matsuda Y, Hwang DM, McVeigh PZ, Wilson BC, Zheng G, Keshavjee S, Yasufuku K. Orthotopic lung cancer murine model by nonoperative transbronchial approach. Ann Thorac Surg 2014; 97:1771-5. [PMID: 24792261 DOI: 10.1016/j.athoracsur.2014.01.048] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 01/13/2014] [Accepted: 01/17/2014] [Indexed: 11/29/2022]
Abstract
PURPOSE The aim of this work was to establish a novel orthotopic human non-small cell lung cancer (NSCLC) murine xenograft model by a nonsurgical, transbronchial approach. DESCRIPTION Male athymic nude mice and human NSCLC cell lines, including A549, H460, and H520 were used. Under direct visualization of the vocal cords, a 23-gauge blunt-tip slightly curved metal catheter was introduced into the trachea to the bronchus, and 2.5×10(5) tumor cells mixed with Matrigel (BD Biosciences, Mississauga, Ontario, Canada) were administered into the lung. Mice were monitored using weekly microcomputed tomography scans for tumor formation. EVALUATION When the tumor size reached more than 4 mm in diameter, the animals were euthanized, and the tumor tissue was evaluated histopathologically. Of 37 mice studied, 34 were confirmed to have tumor formation: 29 developed solitary tumors and 5 had multifocal lesions. There was no evidence of extrapleural dissemination or effusion. CONCLUSIONS Transbronchial delivery of tumor cells enabled the establishment of a novel orthotopic human NSCLC murine xenograft model. This clinically relevant preclinical model bearing a solitary nodule is of value for a variety of in vivo research studies.
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Affiliation(s)
- Takahiro Nakajima
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada; Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Takashi Anayama
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada; Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Yasushi Matsuda
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada; Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - David M Hwang
- Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada; Department of Pathology, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Patrick Z McVeigh
- Department of Medical Biophysics, University of Toronto/Ontario Cancer Institute, Toronto, Ontario, Canada
| | - Brian C Wilson
- Department of Medical Biophysics, University of Toronto/Ontario Cancer Institute, Toronto, Ontario, Canada
| | - Gang Zheng
- Department of Medical Biophysics, University of Toronto/Ontario Cancer Institute, Toronto, Ontario, Canada
| | - Shaf Keshavjee
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada; Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Kazuhiro Yasufuku
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada; Latner Thoracic Surgery Research Laboratories, University Health Network, University of Toronto, Toronto, Ontario, Canada.
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Kawada I, Hasina R, Arif Q, Mueller J, Smithberger E, Husain AN, Vokes EE, Salgia R. Dramatic antitumor effects of the dual MET/RON small-molecule inhibitor LY2801653 in non-small cell lung cancer. Cancer Res 2013; 74:884-95. [PMID: 24305878 DOI: 10.1158/0008-5472.can-12-3583] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Lung cancer is a heterogeneous disease encompassing a wide array of genetic abnormalities. The MET receptor tyrosine kinase is altered in many lung cancers, especially non-small cell lung cancer (NSCLC), and clinical trials of MET inhibitors that are under way are documenting cases of acquired resistance. On the basis of the evidence that the RON tyrosine kinase receptor can also be overexpressed in NSCLC, we evaluated the potent MET/RON dual kinase inhibitor LY2801653 in this setting. LY2801653 was more efficacious than the MET/ALK/RON/ROS inhibitor crizotinib with a distinct pattern of downstream signaling effects. Using the PamGene platform, we found that inhibition of MET and RON was associated with decreased phosphorylation of CBL, PI3K, and STAT3. In classic and orthotopic mouse xenograft models of lung cancer, LY2801653 decreased tumor growth, dramatically inhibiting mitotic events and angiogenesis. Taken together, our results argued that specific targeting of the MET/RON kinases could provide robust inhibition of cell proliferation and tumor outgrowth in multiple in vitro and in vivo models of NSCLC. These findings offer a robust preclinical proof of concept for MET/RON targeting by LY2801653 as a promising small-molecule modality to treat NSCLC.
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Affiliation(s)
- Ichiro Kawada
- Authors' Affiliations: Departments of Medicine and Pathology, The University of Chicago, Chicago, Illinois
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Justilien V, Fields AP. Utility and applications of orthotopic models of human non-small cell lung cancer (NSCLC) for the evaluation of novel and emerging cancer therapeutics. ACTA ACUST UNITED AC 2013; 62:14.27.1-14.27.17. [PMID: 24510718 DOI: 10.1002/0471141755.ph1427s62] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Lung cancer is a leading cause of cancer deaths worldwide. Despite advances in chemotherapy, radiation therapy, and surgery, lung cancer continues to have a low 5-year survival rate, highlighting a dire need for more effective means of prevention, diagnosis, prognosis, and treatment. Mouse models that recapitulate the clinical features of advanced human lung cancer are critical for testing novel therapeutic approaches. This unit describes a highly reproducible, easy-to-establish orthotopic murine model of lung cancer, provides methods for in vivo imaging and monitoring of tumor growth, and discusses the usefulness of this model for translational lung cancer research and the development of therapeutic strategies.
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Affiliation(s)
- Verline Justilien
- Department of Cancer Biology, Mayo Clinic College of Medicine, Jacksonville, Florida
| | - Alan P Fields
- Department of Cancer Biology, Mayo Clinic College of Medicine, Jacksonville, Florida
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Animal Models to Test Adjuvant Treatment: An Experimental Model of Colon Cancer. CURRENT COLORECTAL CANCER REPORTS 2013. [DOI: 10.1007/s11888-013-0180-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Katseli A, Maragos H, Nezos A, Syrigos K, Koutsilieris M. Multiplex PCR-based detection of circulating tumor cells in lung cancer patients using CK19, PTHrP, and LUNX specific primers. Clin Lung Cancer 2013; 14:513-20. [PMID: 23810363 DOI: 10.1016/j.cllc.2013.04.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 04/13/2013] [Accepted: 04/16/2013] [Indexed: 11/25/2022]
Abstract
INTRODUCTION The aim of this study was to develop a multiplex polymerase chain reaction (PCR)-based method for detection of circulating tumor cells in peripheral blood of lung cancer (LC) patients. PATIENTS AND METHODS Peripheral blood was collected from 71 healthy donors and 125 LC patients at different pathological stages. Samples were analyzed using multiplex PCR, and specific primers for CK19, PTHrP, and LUNX mRNA. The sensitivity of our method was set at 10 LC cells (A549 cells) in 3 mL of peripheral blood of healthy donors using spiking experiments. RESULTS The detection rates in LC patients for CK19, PTHrP, and LUNX were 45.6%, 64.8%, and 28%, and in healthy individuals were 7%, 7%, and 5.6%, respectively. Overall, our method produced 77.8% positive detections for at least 1 molecular marker. Twenty-eight (22.2%) were negative for expression of all markers, 39 (31.2%) were positive for expression of 1 marker, 42 (33.6%) were positive for expression of 2 markers, and 17 (13.6%) were positive for expression of all 3 markers. Detection of CK19 mRNA expression positively correlated with LC stage and distant metastases. PTHrP mRNA detection correlated positively with LC stage, presence of bone metastasis, and squamous cell carcinoma, and LUNX mRNA detection correlated with lymph node involvement. Combined detection of 2 or 3 markers was significantly correlated with metastatic disease, and negative detection of all 3 molecular markers was correlated with early stage nonmetastatic disease. CONCLUSION Multiple PCR-based detection of CK19, PTHrP, and LUNX mRNA expression provides useful information for disease stage and dissemination in LC patients.
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Affiliation(s)
- Anastasia Katseli
- Department of Experimental Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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