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Yang R, Gu C, Xie F, Hong S, Herth FJF, Sun J. Potential of Thermal Ablation Combined with Immunotherapy in Peripheral Lung Tumors: A Review and Prospect. Respiration 2024; 103:295-316. [PMID: 38498991 DOI: 10.1159/000538383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 03/11/2024] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND Lung tumors are prevalent malignancies associated with a high mortality rate, imposing significant medical and societal burdens. Although immunotherapy shows promise in improving survival, response rates are relatively modest. Thermal ablation can not only eliminate tumor cells directly but also enhance antitumor immunity response, thus manifesting a remarkable propensity to synergize with immunotherapy. SUMMARY In this review, we provided a brief overview of the application of thermal ablation in peripheral lung tumors. We summarized the patient selection of thermal ablation. We highlighted the potential of thermal ablation to augment the antitumor immune response, offering a promising avenue for combined therapies. We summarized studies assessing the synergistic effects of thermal ablation and immunotherapy in preclinical and clinical settings. Lastly, we underscored the urgent issues that warrant in-depth exploration when applying thermal ablation and immunotherapy to lung tumor patients. KEY MESSAGES This review emphasized the prospects of using thermal ablation combined with immunotherapy in patients with peripheral lung tumors. However, further research is needed to enhance and optimize this treatment strategy.
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Affiliation(s)
- Rui Yang
- Department of Respiratory Endoscopy, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Respiratory and Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Engineering Research Center of Respiratory Endoscopy, Shanghai, China
| | - Chuanjia Gu
- Department of Respiratory Endoscopy, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Respiratory and Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Engineering Research Center of Respiratory Endoscopy, Shanghai, China
| | - Fangfang Xie
- Department of Respiratory Endoscopy, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Respiratory and Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Engineering Research Center of Respiratory Endoscopy, Shanghai, China
| | - Siyuan Hong
- Department of Respiratory Endoscopy, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Respiratory and Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Engineering Research Center of Respiratory Endoscopy, Shanghai, China
| | - Felix J F Herth
- Pneumology and Critical Care Medicine, Thoraxklinik, University of Heidelberg, Heidelberg, Germany
- Translational Lung Research Center Heidelberg, German Center for Lung Research, Heidelberg, Germany
| | - Jiayuan Sun
- Department of Respiratory Endoscopy, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Respiratory and Critical Care Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Engineering Research Center of Respiratory Endoscopy, Shanghai, China
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Jiang M, Fiering S, Shao Q. Combining energy-based focal ablation and immune checkpoint inhibitors: preclinical research and clinical trials. Front Oncol 2023; 13:1153066. [PMID: 37251920 PMCID: PMC10211342 DOI: 10.3389/fonc.2023.1153066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 04/12/2023] [Indexed: 05/31/2023] Open
Abstract
Energy-based focal therapy (FT) uses targeted, minimally invasive procedures to destroy tumors while preserving normal tissue and function. There is strong emerging interest in understanding how systemic immunity against the tumor can occur with cancer immunotherapy, most notably immune checkpoint inhibitors (ICI). The motivation for combining FT and ICI in cancer management relies on the synergy between the two different therapies: FT complements ICI by reducing tumor burden, increasing objective response rate, and reducing side effects of ICI; ICI supplements FT by reducing local recurrence, controlling distal metastases, and providing long-term protection. This combinatorial strategy has shown promising results in preclinical study (since 2004) and the clinical trials (since 2011). Understanding the synergy calls for understanding the physics and biology behind the two different therapies with distinctive mechanisms of action. In this review, we introduce different types of energy-based FT by covering the biophysics of tissue-energy interaction and present the immunomodulatory properties of FT. We discuss the basis of cancer immunotherapy with the emphasis on ICI. We examine the approaches researchers have been using and the results from both preclinical models and clinical trials from our exhaustive literature research. Finally, the challenges of the combinatory strategy and opportunities of future research is discussed extensively.
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Affiliation(s)
- Minhan Jiang
- Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN, United States
| | - Steven Fiering
- Department of Microbiology and Immunology, Geisel School of Medicine, Dartmouth College, Hanover, NH, United States
- Dartmouth Cancer Center, Dartmouth Geisel School of Medicine and Dartmouth Health, Lebanon, NH, United States
| | - Qi Shao
- Department of Radiology, University of Minnesota, Minneapolis, MN, United States
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Pascale F, Pelage JP, Wassef M, Ghegediban SH, Saint-Maurice JP, De Baere T, Denys A, Duran R, Deschamps F, Pellerin O, Maeda N, Laurent A, Namur J. Rabbit VX2 Liver Tumor Model: A Review of Clinical, Biology, Histology, and Tumor Microenvironment Characteristics. Front Oncol 2022; 12:871829. [PMID: 35619923 PMCID: PMC9128410 DOI: 10.3389/fonc.2022.871829] [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: 02/08/2022] [Accepted: 04/05/2022] [Indexed: 11/17/2022] Open
Abstract
The rabbit VX2 is a large animal model of cancer used for decades by interventional radiologists to demonstrate the efficacy of various locoregional treatments against liver tumors. What do we know about this tumor in the new era of targeted therapy and immune-oncology? The present paper describes the current knowledge on the clinics, biology, histopathology, and tumor microenvironment of VX2 based on a literature review of 741 publications in the liver and in other organs. It reveals the resemblance with human cancer (anatomy, vascularity, angiogenic profile, drug sensitivity, immune microenvironment), the differences (etiology, growth rate, histology), and the questions still poorly explored (serum and tissue biomarkers, genomic alterations, immune checkpoint inhibitors efficacy).
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Affiliation(s)
- Florentina Pascale
- Research and Development Department, Archimmed Société à responsabilité limtée Limited liability Company (SARL), Jouy-en-Josas, France
| | - Jean-Pierre Pelage
- Université de Caen Normandie (UNICEAN), Centre d'Energie atomique (CEA), Centre National de la Recherche Scientifique, Imagerie et Stratégies Thérapeutiques pour les Cancers et Tissus Cérébraux CERVOxy (ISTCT-CERVOxy) Normandie University, Caen, France.,Department of Interventional and Diagnostic Imaging, University Hospital of Caen, Avenue de la Côte de Nacre, Caen, France
| | - Michel Wassef
- Service d'Anatomie et Cytologie Pathologiques, Hôpital Lariboisière, Assistance Publique Hopitaux de Paris (APHP); Unité de Formation et de Recherche (URF) de Médecine Paris Nord, Université de Paris, Paris, France
| | - Saïda H Ghegediban
- Research and Development Department, Archimmed Société à responsabilité limtée Limited liability Company (SARL), Jouy-en-Josas, France
| | - Jean-Pierre Saint-Maurice
- Department of Neuroradiology, Hôpital Lariboisière, Assistance Publique Hopitaux de Paris (APHP); Unité de Formation et de Recherche (URF) de Médecine Paris Nord, Université de Paris, Paris, France
| | - Thierry De Baere
- Department of Interventional Radiology, Gustave Roussy Cancer Center, Villejuif, France.,Unité de Formation et de Recherche (URF) Médecine Le Kremlin-Bicêtre, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Alban Denys
- Department of Radiology and Interventional Radiology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Rafael Duran
- Department of Radiology and Interventional Radiology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Frédéric Deschamps
- Department of Interventional Radiology, Gustave Roussy Cancer Center, Villejuif, France.,Unité de Formation et de Recherche (URF) Médecine Le Kremlin-Bicêtre, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Olivier Pellerin
- Department of Interventional Radiology, Hôpital Européen Georges Pompidou, Assistance Publique Hopitaux de Paris (APHP) Université de Paris, Paris, France
| | - Noboru Maeda
- Department of Diagnostic and Interventional Radiology, Osaka International Cancer Institute, Osaka, Japan
| | - Alexandre Laurent
- Department of Neuroradiology, Hôpital Lariboisière, Assistance Publique Hopitaux de Paris (APHP); Unité de Formation et de Recherche (URF) de Médecine Paris Nord, Université de Paris, Paris, France
| | - Julien Namur
- Research and Development Department, Archimmed Société à responsabilité limtée Limited liability Company (SARL), Jouy-en-Josas, France
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[Current Status and Progress of Thermal Ablation Combined with Immunotherapy for Lung Tumors]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2022; 25:266-271. [PMID: 35477191 PMCID: PMC9051299 DOI: 10.3779/j.issn.1009-3419.2022.102.09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Recent studies have shown that tumor immune microenvironment is closely related to tumor progression, metastasis, recurrence and response to treatment. Some immunotherapies also offer hope for cancer patients. However, the efficacy of tumor immunotherapy is uncertain and has some side effects. In order to enhance its efficacy, tumor immunotherapy combined with tumor thermal ablation has been studied. Thermal ablation has the advantages of minimally invasive, rapid recovery, safety, fewer complications, conformation, reliable effect, repeatable, low cost, and has become the fourth tumor treatment measure after surgery, radiotherapy, and drug therapy. It can directly kill tumor cells and modulate the immune system through a variety of mechanisms, although the corresponding mechanisms are not well understood, but combined tumor immunotherapy has been proposed to treat several solid malignancies. In this review, the current status and progress of thermal ablation combined with immunotherapy for lung tumor were reviewed, and further studies on the efficacy and safety of thermal ablation combined with immunotherapy were expected.
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Tranberg KG. Local Destruction of Tumors and Systemic Immune Effects. Front Oncol 2021; 11:708810. [PMID: 34307177 PMCID: PMC8298109 DOI: 10.3389/fonc.2021.708810] [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: 05/12/2021] [Accepted: 06/23/2021] [Indexed: 12/22/2022] Open
Abstract
Current immune-based therapies signify a major advancement in cancer therapy; yet, they are not effective in the majority of patients. Physically based local destruction techniques have been shown to induce immunologic effects and are increasingly used in order to improve the outcome of immunotherapies. The various local destruction methods have different modes of action and there is considerable variation between the different techniques with respect to the ability and frequency to create a systemic anti-tumor immunologic effect. Since the abscopal effect is considered to be the best indicator of a relevant immunologic effect, the present review focused on the tissue changes associated with this effect in order to find determinants for a strong immunologic response, both when local destruction is used alone and combined with immunotherapy. In addition to the T cell-inflammation that was induced by all methods, the analysis indicated that it was important for an optimal outcome that the released antigens were not destroyed, tumor cell death was necrotic and tumor tissue perfusion was at least partially preserved allowing for antigen presentation, immune cell trafficking and reduction of hypoxia. Local treatment with controlled low level hyperthermia met these requisites and was especially prone to result in abscopal immune activity on its own.
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Vandeborne L, Pantziarka P, Van Nuffel AMT, Bouche G. Repurposing Infectious Diseases Vaccines Against Cancer. Front Oncol 2021; 11:688755. [PMID: 34055652 PMCID: PMC8155725 DOI: 10.3389/fonc.2021.688755] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 04/27/2021] [Indexed: 11/30/2022] Open
Abstract
Vaccines used to prevent infections have long been known to stimulate immune responses to cancer as illustrated by the approval of the Bacillus Calmette-Guérin (BCG) vaccine to treat bladder cancer since the 1970s. The recent approval of immunotherapies has rejuvenated this research area with reports of anti-tumor responses with existing infectious diseases vaccines used as such, either alone or in combination with immune checkpoint inhibitors. Here, we have reviewed and summarized research activities using approved vaccines to treat cancer. Data supporting a cancer therapeutic use was found for 16 vaccines. For 10 (BCG, diphtheria, tetanus, human papillomavirus, influenza, measles, pneumococcus, smallpox, typhoid and varicella-zoster), clinical trials have been conducted or are ongoing. Within the remaining 6, preclinical evidence supports further evaluation of the rotavirus, yellow fever and pertussis vaccine in carefully designed clinical trials. The mechanistic evidence for the cholera vaccine, combined with the observational data in colorectal cancer, is also supportive of clinical translation. There is limited data for the hepatitis B and mumps vaccine (without measles vaccine). Four findings are worth highlighting: the superiority of intravesical typhoid vaccine instillations over BCG in a preclinical bladder cancer model, which is now the subject of a phase I trial; the perioperative use of the influenza vaccine to limit and prevent the natural killer cell dysfunction induced by cancer surgery; objective responses following intratumoral injections of measles vaccine in cutaneous T-cell lymphoma; objective responses induced by human papillomavirus vaccine in cutaneous squamous cell carcinoma. All vaccines are intended to induce or improve an anti-tumor (immune) response. In addition to the biological and immunological mechanisms that vary between vaccines, the mode of administration and sequence with other (immuno-)therapies warrant more attention in future research.
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Murai K, Hamamoto S, Okuma T, Kageyama K, Yamamoto A, Ogawa S, Nota T, Sohgawa E, Jogo A, Miki Y. Survival Benefit of Radiofrequency Ablation with Intratumoral Cisplatin Administration in a Rabbit VX2 Lung Tumor Model. Cardiovasc Intervent Radiol 2020; 44:475-481. [PMID: 33165680 DOI: 10.1007/s00270-020-02686-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 10/10/2020] [Indexed: 12/31/2022]
Abstract
PURPOSE This study evaluated the survival benefit of a combination therapy with radiofrequency ablation (RFA) and intratumoral cisplatin (ITC) administration for lung tumors by using a rabbit VX2 tumor model. MATERIALS AND METHODS Experiments were approved by the institutional animal care committee. VX2 tumor suspension was injected into the lungs of Japanese white rabbits under CT guidance to create a lung tumor model. Thirty-two rabbits bearing a transplanted VX2 lung tumor were randomly assigned to four groups of eight: control (untreated); RFA alone; ITC alone; and RFA with ITC. All treatments were performed one week after tumor transplantation. Kaplan-Meier survival curves were compared by the log-rank test. RESULTS The median survival time was 24.5 days (range 17-33 days) in the control group, 40 days (30-80 days) in the RFA alone group, 31.0 days (24-80 days) in the ITC alone group, and not reached (53-80 days) in the RFA with ITC group. The median survival was significantly longer with the RFA/ITC combination compared to the control group (P < 0.001), RFA alone (P = 0.034), and ITC alone (P = 0.004). The survival time after RFA alone was also significantly longer than that of the control group (P < 0.001). There was no significant difference in tumor size or the rate of pneumothorax between each group. CONCLUSION RFA prolonged the survival of rabbits with lung VX2 tumors when combined with ITC.
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Affiliation(s)
- Kazuki Murai
- Department of Diagnostic and Interventional Radiology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
| | - Shinichi Hamamoto
- Department of Diagnostic and Interventional Radiology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan.
| | - Tomohisa Okuma
- Department of Diagnostic and Interventional Radiology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
| | - Ken Kageyama
- Department of Diagnostic and Interventional Radiology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
| | - Akira Yamamoto
- Department of Diagnostic and Interventional Radiology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
| | - Satoyuki Ogawa
- Department of Diagnostic and Interventional Radiology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
| | - Takehito Nota
- Department of Diagnostic and Interventional Radiology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
| | - Etsuji Sohgawa
- Department of Diagnostic and Interventional Radiology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
| | - Atsushi Jogo
- Department of Diagnostic and Interventional Radiology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
| | - Yukio Miki
- Department of Diagnostic and Interventional Radiology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
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Kim D, Erinjeri JP. Postablation Immune Microenvironment: Synergy between Interventional Oncology and Immuno-oncology. Semin Intervent Radiol 2019; 36:334-342. [PMID: 31680725 DOI: 10.1055/s-0039-1696704] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Current tumor thermal ablation techniques rely on extreme temperatures to induce irreversible cellular injury and coagulative tissue necrosis. Ablation-induced cellular injury or death releases cancer neoantigens and activates the cancer-immunity cycle, potentially generating tumor-specific immune effectors. However, multiple negative regulatory modulators exist at each step of the cycle, mitigating meaningful and therapeutic anticancer effect provided by the immune system. Recent studies have focused on the introduction and testing of adjuvant immunotherapy combined with ablation to synergistically shift the equilibrium out of inhibitory immune modulation. This article reviews the immune microenvironment in relation to image-guided ablation techniques and discusses current and upcoming novel strategies to take advantage of antitumor immunity.
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Affiliation(s)
- DaeHee Kim
- Interventional Radiology Service, Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Joseph P Erinjeri
- Interventional Radiology Service, Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
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Takaki H, Cornelis F, Kako Y, Kobayashi K, Kamikonya N, Yamakado K. Thermal ablation and immunomodulation: From preclinical experiments to clinical trials. Diagn Interv Imaging 2017; 98:651-659. [DOI: 10.1016/j.diii.2017.04.008] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Revised: 04/23/2017] [Accepted: 04/24/2017] [Indexed: 12/30/2022]
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Ueki A, Okuma T, Hamamoto S, Miki Y. Therapeutic Effects of CT-guided Radiofrequency Ablation with Concurrent Platinum-Doublet Chemotherapy in a Rabbit VX2 Lung Tumor Model. Radiology 2017; 283:391-398. [DOI: 10.1148/radiol.2016160414] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ai Ueki
- From the Department of Radiology, Graduate School of Medicine, Osaka City University, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Tomohisa Okuma
- From the Department of Radiology, Graduate School of Medicine, Osaka City University, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Shinichi Hamamoto
- From the Department of Radiology, Graduate School of Medicine, Osaka City University, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
| | - Yukio Miki
- From the Department of Radiology, Graduate School of Medicine, Osaka City University, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
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Bulvik BE, Rozenblum N, Gourevich S, Ahmed M, Andriyanov AV, Galun E, Goldberg SN. Irreversible Electroporation versus Radiofrequency Ablation: A Comparison of Local and Systemic Effects in a Small-Animal Model. Radiology 2016; 280:413-24. [PMID: 27429143 DOI: 10.1148/radiol.2015151166] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Purpose To compare both periablational and systemic effects of two mechanistically different types of ablation: thermal radiofrequency (RF) ablation and electroporative ablation with irreversible electroporation (IRE) in appropriately selected animal models. Materials and Methods Animal experiments were performed according to a protocol approved by the Animal Care Committee of Hebrew University. Female C57BL/6 mice (n = 165) were randomized to undergo either RF or IRE ablation of noncancerous normal liver. The inflammatory response, cell proliferation, interleukin 6 (IL-6) levels, and intactness of vessels in the liver were assessed at 6, 12, and 24 hours and at 3, 7, and 14 days after ablation (n = 122 for mechanistic experiments). Systemic effects were then assessed by comparing tumor formation in an Mdr2-knockout (KO) mouse model (n = 15) and tumor growth in a remote BNL 1ME hepatoma xenograft tumor (n = 28). Results were averaged and evaluated by using two-tailed t tests. Results Although RF ablation was associated with a well-defined periablational inflammatory rim, for IRE, the infiltrate penetrated the ablation zone, largely along persistently patent vessels. Peak IL-6 levels (6 hours after ablation) were 10 and three times higher than at baseline for IRE and RF, respectively (P < .03). Mdr2-KO mice that were treated with IRE ablation had more tumors that were 3 mm or larger than mice treated with RF ablation or sham operation (mean, 3.6 ± 1.3 [standard deviation] vs 2.4 ± 1.1 and 2.2 ± 0.8, respectively; P < .05 for IRE vs both RF ablation and sham operation). For BNL 1ME tumors, both RF and IRE liver ablation reduced tumor growth, with a greater effect noted for IRE (1329 mm(3) ± 586 and 819 mm(3) ± 327 vs 2241 mm(3) ± 548 for sham operation; P < .05) that was accompanied by more infiltrating lymphocytes compared with sham operation (7.6 cells per frame ± 1.9 vs 11.2 ± 2.1 vs 0.3 ± 0.1; P < .05). Conclusion Persistent patency of vasculature within the coagulated zone from IRE increases the area and accumulation of infiltrative cells that is associated with a higher serum IL-6 level than RF ablation. These local changes of IRE induce more robust systemic effects, including both tumorigenic and immunogenic effects. (©) RSNA, 2016 Online supplemental material is available for this article.
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Affiliation(s)
- Baruch E Bulvik
- From the Goldyne Savad Institute of Gene Therapy (B.E.B., N.R., S.G., E.G., S.N.G.), Laboratory of Membrane and Liposome Research, Department of Biochemistry, Institute for Medical Research Israel-Canada (A.V.A.), and Department of Radiology (S.N.G.), Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; and Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Mass (M.A., S.N.G.)
| | - Nir Rozenblum
- From the Goldyne Savad Institute of Gene Therapy (B.E.B., N.R., S.G., E.G., S.N.G.), Laboratory of Membrane and Liposome Research, Department of Biochemistry, Institute for Medical Research Israel-Canada (A.V.A.), and Department of Radiology (S.N.G.), Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; and Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Mass (M.A., S.N.G.)
| | - Svetlana Gourevich
- From the Goldyne Savad Institute of Gene Therapy (B.E.B., N.R., S.G., E.G., S.N.G.), Laboratory of Membrane and Liposome Research, Department of Biochemistry, Institute for Medical Research Israel-Canada (A.V.A.), and Department of Radiology (S.N.G.), Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; and Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Mass (M.A., S.N.G.)
| | - Muneeb Ahmed
- From the Goldyne Savad Institute of Gene Therapy (B.E.B., N.R., S.G., E.G., S.N.G.), Laboratory of Membrane and Liposome Research, Department of Biochemistry, Institute for Medical Research Israel-Canada (A.V.A.), and Department of Radiology (S.N.G.), Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; and Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Mass (M.A., S.N.G.)
| | - Alexander V Andriyanov
- From the Goldyne Savad Institute of Gene Therapy (B.E.B., N.R., S.G., E.G., S.N.G.), Laboratory of Membrane and Liposome Research, Department of Biochemistry, Institute for Medical Research Israel-Canada (A.V.A.), and Department of Radiology (S.N.G.), Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; and Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Mass (M.A., S.N.G.)
| | - Eithan Galun
- From the Goldyne Savad Institute of Gene Therapy (B.E.B., N.R., S.G., E.G., S.N.G.), Laboratory of Membrane and Liposome Research, Department of Biochemistry, Institute for Medical Research Israel-Canada (A.V.A.), and Department of Radiology (S.N.G.), Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; and Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Mass (M.A., S.N.G.)
| | - S Nahum Goldberg
- From the Goldyne Savad Institute of Gene Therapy (B.E.B., N.R., S.G., E.G., S.N.G.), Laboratory of Membrane and Liposome Research, Department of Biochemistry, Institute for Medical Research Israel-Canada (A.V.A.), and Department of Radiology (S.N.G.), Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel; and Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Mass (M.A., S.N.G.)
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