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Chen J, Madina BR, Ahmadi E, Yarovinsky TO, Krady MM, Meehan EV, Wang IC, Ye X, Pitmon E, Ma XY, Almassian B, Nakaar V, Wang K. Cancer immunotherapy with enveloped self-amplifying mRNA CARG-2020 that modulates IL-12, IL-17 and PD-L1 pathways to prevent tumor recurrence. Acta Pharm Sin B 2024; 14:335-349. [PMID: 38261838 PMCID: PMC10792965 DOI: 10.1016/j.apsb.2023.08.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/01/2023] [Accepted: 08/15/2023] [Indexed: 01/25/2024] Open
Abstract
Targeting multiple immune mechanisms may overcome therapy resistance and further improve cancer immunotherapy for humans. Here, we describe the application of virus-like vesicles (VLV) for delivery of three immunomodulators alone and in combination, as a promising approach for cancer immunotherapy. VLV vectors were designed to deliver single chain interleukin (IL)-12, short-hairpin RNA (shRNA) targeting programmed death ligand 1 (PD-L1), and a dominant-negative form of IL-17 receptor A (dn-IL17RA) as a single payload or as a combination payload. Intralesional delivery of the VLV vector expressing IL-12 alone, as well as the trivalent vector (designated CARG-2020) eradicated large established tumors. However, only CARG-2020 prevented tumor recurrence and provided long-term survival benefit to the tumor-bearing mice, indicating a benefit of the combined immunomodulation. The abscopal effects of CARG-2020 on the non-injected contralateral tumors, as well as protection from the tumor cell re-challenge, suggest immune-mediated mechanism of protection and establishment of immunological memory. Mechanistically, CARG-2020 potently activates Th1 immune mechanisms and inhibits expression of genes related to T cell exhaustion and cancer-promoting inflammation. The ability of CARG-2020 to prevent tumor recurrence and to provide survival benefit makes it a promising candidate for its development for human cancer immunotherapy.
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Affiliation(s)
- Ju Chen
- Department of Immunology, School of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA
- The Eighth Clinical Medical College of Guangzhou University of Chinese Medicine, Foshan Hospital of Traditional Chinese Medicine, Foshan 528000, China
| | | | - Elham Ahmadi
- Department of Immunology, School of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA
- CaroGen Corporation, Farmington, CT 06030, USA
| | | | | | - Eileen Victoria Meehan
- Department of Immunology, School of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Isabella China Wang
- Department of Immunology, School of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA
- The Loomis Chaffee School, Windsor, CT 06095, USA
| | - Xiaoyang Ye
- Department of Immunology, School of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Elise Pitmon
- Department of Immunology, School of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA
| | | | | | | | - Kepeng Wang
- Department of Immunology, School of Medicine, University of Connecticut Health Center, Farmington, CT 06030, USA
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Bhagat A, Lyerly HK, Morse MA, Hartman ZC. CEA vaccines. Hum Vaccin Immunother 2023; 19:2291857. [PMID: 38087989 PMCID: PMC10732609 DOI: 10.1080/21645515.2023.2291857] [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: 09/13/2023] [Accepted: 12/02/2023] [Indexed: 12/18/2023] Open
Abstract
Carcinoembryonic antigen (CEA) is a glycosylated cell surface oncofetal protein involved in adhesion, proliferation, and migration that is highly upregulated in multiple carcinomas and has long been a promising target for cancer vaccination. This review summarizes the progress to date in the development of CEA vaccines, examining both pre-clinical and clinical studies across a variety of vaccine platforms that in aggregate, begin to reveal some critical insights. These studies demonstrate the ability of CEA vaccines to break immunologic tolerance and elicit CEA-specific immunity, which associates with improved clinical outcomes in select individuals. Approaches that have combined replicating viral vectors, with heterologous boosting and different adjuvant strategies have been particularly promising but, these early clinical trial results will require confirmatory studies. Collectively, these studies suggest that clinical efficacy likely depends upon harnessing a potent vaccine combination in an appropriate clinical setting to fully realize the potential of CEA vaccination.
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Affiliation(s)
- Anchit Bhagat
- Department of Surgery, Division of Surgical Sciences, Duke University, Durham, NC, USA
| | - Herbert K. Lyerly
- Department of Surgery, Division of Surgical Sciences, Duke University, Durham, NC, USA
- Department of Pathology, Duke University, Durham, NC, USA
- Department of Integrative Immunobiology, Duke University, Durham, NC, USA
| | - Michael A. Morse
- Department of Surgery, Division of Surgical Sciences, Duke University, Durham, NC, USA
- Department of Medicine, Duke University, Durham, NC, USA
| | - Zachary C. Hartman
- Department of Surgery, Division of Surgical Sciences, Duke University, Durham, NC, USA
- Department of Pathology, Duke University, Durham, NC, USA
- Department of Integrative Immunobiology, Duke University, Durham, NC, USA
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3
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Lundstrom K. Alphaviruses in cancer immunotherapy. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2023; 379:143-168. [PMID: 37541722 DOI: 10.1016/bs.ircmb.2023.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/06/2023]
Abstract
Alphaviruses have frequently been engineered for cancer therapy, cancer immunotherapy, and cancer vaccine development. As members of self-replicating RNA viruses, alphaviruses provide high levels of transgene expression through efficient self-amplifying of their RNA genome in host cells. Alphavirus vectors can be used as recombinant viral particles or oncolytic viruses. Alternatively, either naked or nanoparticle-encapsulated RNA and DNA replicons can be utilized. In the context of cancer prevention and treatment, antitumor, cytotoxic and suicide genes have been expressed from alphavirus vectors to provide tumor regression and tumor eradication. Moreover, immunostimulatory genes such as cytokines and chemokines have been used for cancer immunotherapy approaches. Expression of tumor antigens has been applied for cancer vaccine development. Alphavirus vectors has demonstrated tumor regression and even cure in various preclinical animal models. Immunization has elicited strong immune responses and showed protection against challenges with tumor cells in animal models. Several clinical trials have confirmed good safety and tolerability of alphaviruses in cancer patients although therapeutic efficacy will still require optimization.
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4
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Alluqmani N, Jirovec A, Taha Z, Varette O, Chen A, Serrano D, Maznyi G, Khan S, Forbes NE, Arulanandam R, Auer RC, Diallo JS. Vanadyl sulfate-enhanced oncolytic virus immunotherapy mediates the antitumor immune response by upregulating the secretion of pro-inflammatory cytokines and chemokines. Front Immunol 2022; 13:1032356. [PMID: 36532027 PMCID: PMC9749062 DOI: 10.3389/fimmu.2022.1032356] [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: 08/30/2022] [Accepted: 11/09/2022] [Indexed: 11/29/2022] Open
Abstract
Oncolytic viruses (OVs) are promising anticancer treatments that specifically replicate in and kill cancer cells and have profound immunostimulatory effects. We previously reported the potential of vanadium-based compounds such as vanadyl sulfate (VS) as immunostimulatory enhancers of OV immunotherapy. These compounds, in conjunction with RNA-based OVs such as oncolytic vesicular stomatitis virus (VSVΔ51), improve viral spread and oncolysis, leading to long-term antitumor immunity and prolonged survival in resistant tumor models. This effect is associated with a virus-induced antiviral type I IFN response shifting towards a type II IFN response in the presence of vanadium. Here, we investigated the systemic impact of VS+VSVΔ51 combination therapy to understand the immunological mechanism of action leading to improved antitumor responses. VS+VSVΔ51 combination therapy significantly increased the levels of IFN-γ and IL-6, and improved tumor antigen-specific T-cell responses. Supported by immunological profiling and as a proof of concept for the design of more effective therapeutic regimens, we found that local delivery of IL-12 using VSVΔ51 in combination with VS further improved therapeutic outcomes in a syngeneic CT26WT colon cancer model.
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Affiliation(s)
- Nouf Alluqmani
- Centre for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada,Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, ON, Canada,Research Center, Molecular Oncology Department King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Anna Jirovec
- Centre for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada,Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, ON, Canada
| | - Zaid Taha
- Centre for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada,Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, ON, Canada
| | - Oliver Varette
- Centre for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Andrew Chen
- Centre for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Daniel Serrano
- Centre for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Glib Maznyi
- Centre for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Sarwat Khan
- Centre for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Nicole E. Forbes
- Centre for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Rozanne Arulanandam
- Centre for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Rebecca C. Auer
- Centre for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada,Department of Surgery, University of Ottawa, Ottawa, ON, Canada
| | - Jean-Simon Diallo
- Centre for Innovative Cancer Research, Ottawa Hospital Research Institute, Ottawa, ON, Canada,Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, ON, Canada,*Correspondence: Jean-Simon Diallo,
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5
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Alphaviruses in Immunotherapy and Anticancer Therapy. Biomedicines 2022; 10:biomedicines10092263. [PMID: 36140364 PMCID: PMC9496634 DOI: 10.3390/biomedicines10092263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/06/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
Alphaviruses have been engineered as expression vectors for vaccine development and gene therapy. Due to the feature of RNA self-replication, alphaviruses can provide exceptional direct cytoplasmic expression of transgenes based on the delivery of recombinant particles, naked or nanoparticle-encapsulated RNA or plasmid-based DNA replicons. Alphavirus vectors have been utilized for the expression of various antigens targeting different types of cancers, and cytotoxic and antitumor genes. The most common alphavirus vectors are based on the Semliki Forest virus, Sindbis virus and Venezuelan equine encephalitis virus, but the oncolytic M1 alphavirus has also been used. Delivery of immunostimulatory cytokine genes has been the basis for immunotherapy demonstrating efficacy in different animal tumor models for brain, breast, cervical, colon, lung, ovarian, pancreatic, prostate and skin cancers. Typically, therapeutic effects including tumor regression, tumor eradication and complete cure as well as protection against tumor challenges have been observed. Alphavirus vectors have also been subjected to clinical evaluations. For example, therapeutic responses in all cervical cancer patients treated with an alphavirus vector expressing the human papilloma virus E6 and E7 envelope proteins have been achieved.
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6
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Abstract
Self-replicating RNA viral vectors have been engineered for both prophylactic and therapeutic applications. Mainly the areas of infectious diseases and cancer have been targeted. Both positive and negative strand RNA viruses have been utilized including alphaviruses, flaviviruses, measles viruses and rhabdoviruses. The high-level of RNA amplification has provided efficient expression of viral surface proteins and tumor antigens. Immunization studies in animal models have elicit robust neutralizing antibody responses. In the context of infectious diseases, immunization with self-replicating RNA viral vectors has provided protection against challenges with lethal doses of pathogens in animal models. Similarly, immunization with vectors expressing tumor antigens has resulted in tumor regression and eradication and protection against tumor challenges in animal models. The transient nature and non-integration of viral RNA into the host genome are ideal features for vaccine development. Moreover, self-replicating RNA viral vectors show great flexibility as they can be applied as recombinant viral particles, RNA replicons or DNA replicon plasmids. Several clinical trials have been conducted especially in the area of cancer immunotherapy.
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7
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Cancer vaccine strategies using self-replicating RNA viral platforms. Cancer Gene Ther 2022:10.1038/s41417-022-00499-6. [PMID: 35821284 PMCID: PMC9275542 DOI: 10.1038/s41417-022-00499-6] [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: 11/12/2021] [Revised: 05/21/2022] [Accepted: 06/23/2022] [Indexed: 11/09/2022]
Abstract
The development and success of RNA-based vaccines targeting SARS-CoV-2 has awakened new interest in utilizing RNA vaccines against cancer, particularly in the emerging use of self-replicating RNA (srRNA) viral vaccine platforms. These vaccines are based on different single-stranded RNA viruses, which encode RNA for target antigens in addition to replication genes that are capable of massively amplifying RNA messages after infection. The encoded replicase genes also stimulate innate immunity, making srRNA vectors ideal candidates for anti-tumor vaccination. In this review, we summarize different types of srRNA platforms that have emerged and review evidence for their efficacy in provoking anti-tumor immunity to different antigens. These srRNA platforms encompass the use of naked RNA, DNA-launched replicons, viral replicon particles (VRP), and most recently, synthetic srRNA replicon particles. Across these platforms, studies have demonstrated srRNA vaccine platforms to be potent inducers of anti-tumor immunity, which can be enhanced by homologous vaccine boosting and combining with chemotherapies, radiation, and immune checkpoint inhibition. As such, while this remains an active area of research, the past and present trajectory of srRNA vaccine development suggests immense potential for this platform in producing effective cancer vaccines.
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8
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Su H, Imai K, Jia W, Li Z, DiCioccio RA, Serody JS, Poe JC, Chen BJ, Doan PL, Sarantopoulos S. Alphavirus Replicon Particle Vaccine Breaks B Cell Tolerance and Rapidly Induces IgG to Murine Hematolymphoid Tumor Associated Antigens. Front Immunol 2022; 13:865486. [PMID: 35686131 PMCID: PMC9171395 DOI: 10.3389/fimmu.2022.865486] [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: 01/29/2022] [Accepted: 04/25/2022] [Indexed: 11/13/2022] Open
Abstract
De novo immune responses to myeloid and other blood-borne tumors are notably limited and ineffective, making our ability to promote immune responses with vaccines a major challenge. While focus has been largely on cytotoxic cell-mediated tumor eradication, B-cells and the antibodies they produce also have roles in anti-tumor responses. Indeed, therapeutic antibody-mediated tumor cell killing is routinely employed in patients with hematolymphoid cancers, but whether endogenous antibody responses can be incited to blood-born tumors remains poorly studied. A major limitation of immunoglobulin therapies is that cell surface expression of tumor-associated antigen (TAA) targets is dynamic and varied, making promotion of polyclonal, endogenous B cell responses appealing. Since many TAAs are self-antigens, developing tumor vaccines that enable production of antibodies to non-polymorphic antigen targets remains a challenge. As B cell responses to RNA vaccines are known to occur, we employed the Viral Replicon Particles (VRP) which was constructed to encode mouse FLT3. The VRP-FLT3 vaccine provoked a rapid IgG B-cell response to this self-antigen in leukemia and lymphoma mouse models. In addition, IgGs to other TAAs were also produced. Our data suggest that vaccination with RNA viral particle vectors incites a loss of B-cell tolerance that enables production of anti-tumor antibodies. This proof of principle work provides impetus to employ such strategies that lead to a break in B-cell tolerance and enable production of broadly reactive anti-TAA antibodies as potential future therapeutic agents for patients with hematolymphoid cancers.
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Affiliation(s)
- Hsuan Su
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States
| | - Kazuhiro Imai
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States.,Department of Thoracic Surgery, Akita University Graduate School of Medicine, Akita, Japan
| | - Wei Jia
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States
| | - Zhiguo Li
- Biostatistics and Bioinformatics, Basic Science Department, Duke University Medical Center, Durham, NC, United States.,Duke Cancer Institute, Duke University, Durham, NC, United States
| | - Rachel A DiCioccio
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States
| | - Jonathan S Serody
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Jonathan C Poe
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States
| | - Benny J Chen
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States.,Duke Cancer Institute, Duke University, Durham, NC, United States
| | - Phuong L Doan
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States.,Duke Cancer Institute, Duke University, Durham, NC, United States
| | - Stefanie Sarantopoulos
- Department of Medicine, Division of Hematological Malignancies and Cellular Therapy, Duke University Medical Center, Durham, NC, United States.,Duke Cancer Institute, Duke University, Durham, NC, United States.,Department of Immunology, School of Medicine, Duke University , Durham, NC, United States
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9
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Abstract
Alphaviruses have been engineered as expression vectors for different strategies of cancer therapy including immunotherapy and cancer vaccine development. Administration of recombinant virus particles, RNA replicons and plasmid DNA-based replicons provide great flexibility for alphavirus applications. Immunization and delivery studies have demonstrated therapeutic efficacy in the form of reduced tumor growth, tumor regression and eradication of established tumors in different animal models for cancers such as brain, breast, colon, cervical, lung, ovarian, pancreas, prostate cancers, and melanoma. Furthermore, vaccinated animals have showed protection against challenges with tumor cells. A limited number of clinical trials in the area of brain, breast, cervical, colon prostate cancers and melanoma vaccines has been conducted. Particularly, immunization of cervical cancer patients elicited immune responses and therapeutic activity in all patients included in a phase I clinical trial. Moreover, stable disease and partial responses were observed in breast cancer patients and prolonged survival was achieved in colon cancer patients.
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10
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Telli ML, Nagata H, Wapnir I, Acharya CR, Zablotsky K, Fox BA, Bifulco CB, Jensen SM, Ballesteros-Merino C, Le MH, Pierce RH, Browning E, Hermiz R, Svenson L, Bannavong D, Jaffe K, Sell J, Foerter KM, Canton DA, Twitty CG, Osada T, Lyerly HK, Crosby EJ. Intratumoral Plasmid IL12 Expands CD8 + T Cells and Induces a CXCR3 Gene Signature in Triple-negative Breast Tumors that Sensitizes Patients to Anti-PD-1 Therapy. Clin Cancer Res 2021; 27:2481-2493. [PMID: 33593880 DOI: 10.1158/1078-0432.ccr-20-3944] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 01/08/2021] [Accepted: 02/10/2021] [Indexed: 11/16/2022]
Abstract
PURPOSE Triple-negative breast cancer (TNBC) is an aggressive disease with limited therapeutic options. Antibodies targeting programmed cell death protein 1 (PD-1)/PD-1 ligand 1 (PD-L1) have entered the therapeutic landscape in TNBC, but only a minority of patients benefit. A way to reliably enhance immunogenicity, T-cell infiltration, and predict responsiveness is critically needed. PATIENTS AND METHODS Using mouse models of TNBC, we evaluate immune activation and tumor targeting of intratumoral IL12 plasmid followed by electroporation (tavokinogene telseplasmid; Tavo). We further present a single-arm, prospective clinical trial of Tavo monotherapy in patients with treatment refractory, advanced TNBC (OMS-I140). Finally, we expand these findings using publicly available breast cancer and melanoma datasets. RESULTS Single-cell RNA sequencing of murine tumors identified a CXCR3 gene signature (CXCR3-GS) following Tavo treatment associated with enhanced antigen presentation, T-cell infiltration and expansion, and PD-1/PD-L1 expression. Assessment of pretreatment and posttreatment tissue from patients confirms enrichment of this CXCR3-GS in tumors from patients that exhibited an enhancement of CD8+ T-cell infiltration following treatment. One patient, previously unresponsive to anti-PD-L1 therapy, but who exhibited an increased CXCR3-GS after Tavo treatment, went on to receive additional anti-PD-1 therapy as their immediate next treatment after OMS-I140, and demonstrated a significant clinical response. CONCLUSIONS These data show a safe, effective intratumoral therapy that can enhance antigen presentation and recruit CD8 T cells, which are required for the antitumor efficacy. We identify a Tavo treatment-related gene signature associated with improved outcomes and conversion of nonresponsive tumors, potentially even beyond TNBC.
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Affiliation(s)
- Melinda L Telli
- Department of Medicine, Stanford University School of Medicine, Stanford, California.
| | - Hiroshi Nagata
- Department of Surgery, Duke University, Durham, North Carolina
| | - Irene Wapnir
- Department of Surgery, Stanford University School of Medicine, Stanford, California
| | | | - Kaitlin Zablotsky
- Department of Medicine, Stanford University School of Medicine, Stanford, California
| | - Bernard A Fox
- Earle A. Chiles Research Institute, Providence Portland Medical Center, Portland, Oregon
| | - Carlo B Bifulco
- Earle A. Chiles Research Institute, Providence Portland Medical Center, Portland, Oregon
| | - Shawn M Jensen
- Earle A. Chiles Research Institute, Providence Portland Medical Center, Portland, Oregon
| | | | - Mai Hope Le
- OncoSec Medical Incorporated, San Diego, California
| | | | | | | | | | | | - Kim Jaffe
- OncoSec Medical Incorporated, San Diego, California
| | - Jendy Sell
- OncoSec Medical Incorporated, San Diego, California
| | | | | | | | - Takuya Osada
- Department of Surgery, Duke University, Durham, North Carolina
| | - H Kim Lyerly
- Department of Surgery, Duke University, Durham, North Carolina.,Department of Immunology, Duke University, Durham, North Carolina.,Department of Pathology, Duke University, Durham, North Carolina
| | - Erika J Crosby
- Department of Surgery, Duke University, Durham, North Carolina.
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11
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Self-Replicating RNAs Drive Protective Anti-tumor T Cell Responses to Neoantigen Vaccine Targets in a Combinatorial Approach. Mol Ther 2020; 29:1186-1198. [PMID: 33278563 DOI: 10.1016/j.ymthe.2020.11.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/05/2020] [Accepted: 11/25/2020] [Indexed: 12/15/2022] Open
Abstract
Historically poor clinical results of tumor vaccines have been attributed to weakly immunogenic antigen targets, limited specificity, and vaccine platforms that fail to induce high-quality polyfunctional T cells, central to mediating cellular immunity. We show here that the combination of antigen selection, construct design, and a robust vaccine platform based on the Synthetically Modified Alpha Replicon RNA Technology (SMARRT), a self-replicating RNA, leads to control of tumor growth in mice. Therapeutic immunization with SMARRT replicon-based vaccines expressing tumor-specific neoantigens or tumor-associated antigen were able to generate polyfunctional CD4+ and CD8+ T cell responses in mice. Additionally, checkpoint inhibitors, or co-administration of cytokine also expressed from the SMARRT platform, synergized to enhance responses further. Lastly, SMARRT-based immunization of non-human primates was able to elicit high-quality T cell responses, demonstrating translatability and clinical feasibility of synthetic replicon technology for therapeutic oncology vaccines.
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12
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Nguyen KG, Vrabel MR, Mantooth SM, Hopkins JJ, Wagner ES, Gabaldon TA, Zaharoff DA. Localized Interleukin-12 for Cancer Immunotherapy. Front Immunol 2020; 11:575597. [PMID: 33178203 PMCID: PMC7593768 DOI: 10.3389/fimmu.2020.575597] [Citation(s) in RCA: 194] [Impact Index Per Article: 48.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 09/08/2020] [Indexed: 12/30/2022] Open
Abstract
Interleukin-12 (IL-12) is a potent, pro-inflammatory type 1 cytokine that has long been studied as a potential immunotherapy for cancer. Unfortunately, IL-12's remarkable antitumor efficacy in preclinical models has yet to be replicated in humans. Early clinical trials in the mid-1990's showed that systemic delivery of IL-12 incurred dose-limiting toxicities. Nevertheless, IL-12's pleiotropic activity, i.e., its ability to engage multiple effector mechanisms and reverse tumor-induced immunosuppression, continues to entice cancer researchers. The development of strategies which maximize IL-12 delivery to the tumor microenvironment while minimizing systemic exposure are of increasing interest. Diverse IL-12 delivery systems, from immunocytokine fusions to polymeric nanoparticles, have demonstrated robust antitumor immunity with reduced adverse events in preclinical studies. Several localized IL-12 delivery approaches have recently reached the clinical stage with several more at the precipice of translation. Taken together, localized delivery systems are supporting an IL-12 renaissance which may finally allow this potent cytokine to fulfill its considerable clinical potential. This review begins with a brief historical account of cytokine monotherapies and describes how IL-12 went from promising new cure to ostracized black sheep following multiple on-study deaths. The bulk of this comprehensive review focuses on developments in diverse localized delivery strategies for IL-12-based cancer immunotherapies. Advantages and limitations of different delivery technologies are highlighted. Finally, perspectives on how IL-12-based immunotherapies may be utilized for widespread clinical application in the very near future are offered.
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Affiliation(s)
- Khue G Nguyen
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill and North Carolina State University, Raleigh, NC, United States
| | - Maura R Vrabel
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill and North Carolina State University, Raleigh, NC, United States
| | - Siena M Mantooth
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill and North Carolina State University, Raleigh, NC, United States
| | - Jared J Hopkins
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill and North Carolina State University, Raleigh, NC, United States
| | - Ethan S Wagner
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill and North Carolina State University, Raleigh, NC, United States
| | - Taylor A Gabaldon
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill and North Carolina State University, Raleigh, NC, United States
| | - David A Zaharoff
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill and North Carolina State University, Raleigh, NC, United States
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13
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Chi X, Yang P, Zhang E, Gu J, Xu H, Li M, Gao X, Li X, Zhang Y, Xu H, Hu J. Significantly increased anti-tumor activity of carcinoembryonic antigen-specific chimeric antigen receptor T cells in combination with recombinant human IL-12. Cancer Med 2019; 8:4753-4765. [PMID: 31237116 PMCID: PMC6712469 DOI: 10.1002/cam4.2361] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 05/07/2019] [Accepted: 05/31/2019] [Indexed: 12/27/2022] Open
Abstract
Background aims Chimeric antigen receptor T cells (CAR‐T cells) have been successfully used in treatments of hematological tumors, however, their anti‐tumor activity in solid tumor treatments was limited. As IL‐12 increases T‐cell immune functions, we designed carcinoembryonic antigen (CEA) specific CAR‐T (CEA‐CAR‐T) cells and, for the first time, used them in combination with recombinant human IL‐12 (rhIL‐12) to treat several types of solid tumors. Methods In vitro anti‐tumor activity of CEA‐CAR‐T cells in combination with rhIL‐12 was confirmed by evaluation of CEA‐CAR‐T cell activation, proliferation, and cytotoxicity after co‐incubation with CEA‐positive or CEA‐negative human tumor cells. In vivo anti‐tumor activity of CEA‐CAR‐T cells in combination with rhIL‐12 was confirmed in a xenograft model in nude mice for treatments of several types of solid tumors. Results In vitro experiments confirmed that rhIL‐12 significantly increased the activation, proliferation, and cytotoxicity of CEA‐CAR‐T cells. Similarly, in vivo experiments found that CEA‐CAR‐T cells in combination with rhIL‐12 had significantly enhanced anti‐tumor activity than CEA‐CAR‐T cells in growth inhibition of newly colonized colorectal cancer cell HT‐29, pancreatic cancer cell AsPC‐1, and gastric cancer cell MGC803. Conclusions These works confirmed that simultaneous use of cytokines, for example, rhIL‐12, can increase the anti‐tumor activity of CAR‐T cells, especially for treatments of several types of solid tumors.
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Affiliation(s)
- Xiaowei Chi
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu ProvinceNanjingP. R. China
- State Key Laboratory of Natural Medicines, Ministry of EducationChina Pharmaceutical UniversityNanjingP. R. China
- Development Center for Medicine Science and TechnologyNational Health and Family Planning Commission of the People's Republic of ChinaBeijingP. R. China
| | - Peiwei Yang
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu ProvinceNanjingP. R. China
- State Key Laboratory of Natural Medicines, Ministry of EducationChina Pharmaceutical UniversityNanjingP. R. China
| | - Erhao Zhang
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu ProvinceNanjingP. R. China
- State Key Laboratory of Natural Medicines, Ministry of EducationChina Pharmaceutical UniversityNanjingP. R. China
| | - Jieyi Gu
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu ProvinceNanjingP. R. China
- State Key Laboratory of Natural Medicines, Ministry of EducationChina Pharmaceutical UniversityNanjingP. R. China
| | - Hui Xu
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu ProvinceNanjingP. R. China
- State Key Laboratory of Natural Medicines, Ministry of EducationChina Pharmaceutical UniversityNanjingP. R. China
| | - Mengwei Li
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu ProvinceNanjingP. R. China
- State Key Laboratory of Natural Medicines, Ministry of EducationChina Pharmaceutical UniversityNanjingP. R. China
| | - Xinmei Gao
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu ProvinceNanjingP. R. China
- State Key Laboratory of Natural Medicines, Ministry of EducationChina Pharmaceutical UniversityNanjingP. R. China
| | - Xin Li
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu ProvinceNanjingP. R. China
- State Key Laboratory of Natural Medicines, Ministry of EducationChina Pharmaceutical UniversityNanjingP. R. China
| | - Yinan Zhang
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu ProvinceNanjingP. R. China
- State Key Laboratory of Natural Medicines, Ministry of EducationChina Pharmaceutical UniversityNanjingP. R. China
| | - Hanmei Xu
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu ProvinceNanjingP. R. China
- State Key Laboratory of Natural Medicines, Ministry of EducationChina Pharmaceutical UniversityNanjingP. R. China
| | - Jialiang Hu
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation of Jiangsu ProvinceNanjingP. R. China
- State Key Laboratory of Natural Medicines, Ministry of EducationChina Pharmaceutical UniversityNanjingP. R. China
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14
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Sun Y, Wang S, Yang H, Wu J, Li S, Qiao G, Wang S, Wang X, Zhou X, Osada T, Hobeika A, Morse MA, Ren J, Lyerly HK. Impact of synchronized anti-PD-1 with Ad-CEA vaccination on inhibition of colon cancer growth. Immunotherapy 2019; 11:953-966. [PMID: 31192764 DOI: 10.2217/imt-2019-0055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aim: The purpose of this study was to determine whether addition of anti-PD-1 antibody increased the immunogenicity and anti-tumor activity of Ad-CEA vaccination in a murine model of colon cancer. Methods: Ad-CEA was administered prior to implantation of MC-38-CEA cells followed by administration of anti-PD-1 antibody. CEA-specific T-cell responses were measured by flow cytometry and ELISPOT. Dynamic co-culture of splenocytes with tumor cells was conducted to analyze anti-tumor activities. Tumor infiltration by lymphocytes was measured by IHC. Tumor volume and overall survival were also recorded. Results: Ad-CEA combined with anti-PD-1 antibody showed greater anti-tumor activity compared with either alone. The combination also increased T-cell infiltration but decreased Tregs. Conclusion: Combining Ad-CEA vaccination with anti-PD-1 antibody enhanced anti-tumor activity and immune responses.
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Affiliation(s)
- Yuanyuan Sun
- Department of Medical Oncology, Beijing Key Laboratory for Therapeutic Cancer Vaccines, Capital Medical University Cancer Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Suya Wang
- Department of Medical Oncology, Beijing Key Laboratory for Therapeutic Cancer Vaccines, Capital Medical University Cancer Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Hainan Yang
- Department of Medical Oncology, Beijing Key Laboratory for Therapeutic Cancer Vaccines, Capital Medical University Cancer Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Jiangping Wu
- Department of Medical Oncology, Beijing Key Laboratory for Therapeutic Cancer Vaccines, Capital Medical University Cancer Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Sha Li
- Department of Medical Oncology, Beijing Key Laboratory for Therapeutic Cancer Vaccines, Capital Medical University Cancer Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Guoliang Qiao
- Department of Medical Oncology, Beijing Key Laboratory for Therapeutic Cancer Vaccines, Capital Medical University Cancer Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Shuo Wang
- Department of Medical Oncology, Beijing Key Laboratory for Therapeutic Cancer Vaccines, Capital Medical University Cancer Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Xiaoli Wang
- Department of Medical Oncology, Beijing Key Laboratory for Therapeutic Cancer Vaccines, Capital Medical University Cancer Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Xinna Zhou
- Department of Medical Oncology, Beijing Key Laboratory for Therapeutic Cancer Vaccines, Capital Medical University Cancer Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
| | - Takuya Osada
- Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA
| | - Amy Hobeika
- Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA
| | - Michael A Morse
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA.,Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA
| | - Jun Ren
- Department of Medical Oncology, Beijing Key Laboratory for Therapeutic Cancer Vaccines, Capital Medical University Cancer Center, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China.,Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA
| | - Herbert Kim Lyerly
- Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA
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15
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Lyerly HK, Osada T, Hartman ZC. Right Time and Place for IL12: Targeted Delivery Stimulates Immune Therapy. Clin Cancer Res 2018; 25:9-11. [PMID: 30377197 DOI: 10.1158/1078-0432.ccr-18-2819] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/10/2018] [Accepted: 10/25/2018] [Indexed: 11/16/2022]
Abstract
Systemic IL12 therapy has potent antitumor effects, but clinical delivery of this potent cytokine has been complicated by systemic toxicity. A novel strategy to deliver IL12 to the tumor microenvironment appears promising in a first-in-human study, appearing to stimulate tumor-specific adaptive immune responses with minimal systemic toxicity.See related article by Strauss et al., p. 99.
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Affiliation(s)
- H Kim Lyerly
- Department of Surgery, Duke University, Durham, North Carolina. .,Department of Pathology, Duke University, Durham, North Carolina.,Department of Immunology, Duke University, Durham, North Carolina
| | - Takuya Osada
- Department of Surgery, Duke University, Durham, North Carolina
| | - Zachary C Hartman
- Department of Surgery, Duke University, Durham, North Carolina.,Department of Pathology, Duke University, Durham, North Carolina
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16
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Arshad SH, Karmaus W, Zhang H, Holloway JW. Multigenerational cohorts in patients with asthma and allergy. J Allergy Clin Immunol 2017; 139:415-421. [PMID: 28183434 DOI: 10.1016/j.jaci.2016.12.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 11/30/2016] [Accepted: 12/02/2016] [Indexed: 12/16/2022]
Abstract
Recent observations that disease risk can be transmitted across generations without the need for direct exposure of the child to the index environmental insult has sparked interest in transgenerational inheritance. Epigenetics describes processes that modify gene expression without a change in the nucleotide sequence. Epigenetic processes can be induced in response to environmental exposures, can influence disease risk, and might explain these multigenerational effects. In experimental models a number of epigenetic mechanisms have been identified that could mediate vertical transmission of epigenetic inheritance. However, relevance of these findings to human disease is not yet clear. An alternative model is one in which transgenerational inheritance of disease risk requires the presence of exposure-related diseases in the mother during pregnancy (termed induced epigenetic transmission model). A number of cross-sectional studies have investigated multigenerational effects in allergy and asthma. However, given the early-life origins of asthma and allergy, birth cohort studies are ideal to investigate the effect of genetic predisposition, epigenetics, and environmental exposures, avoiding pitfalls, such as recall bias and confounding by ongoing exposures, disease, and treatment. The well-characterized 3 generations of the Isle of Wight cohort include 2 consecutive birth cohorts, providing longitudinal data that can be studied for epigenetic transfer of information, such as the effect of grand parental smoking or exposure to other toxic compounds. Further large multigenerational birth cohorts are needed to establish the clinical relevance of this phenomenon and differentiate between vertical and induced transmission models, which might influence future preventive strategies.
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Affiliation(s)
- S Hasan Arshad
- David Hide Asthma and Allergy Research Centre, Isle of Wight, United Kingdom; Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom.
| | - Wilfried Karmaus
- Division of Epidemiology, Biostatistics and Environmental Health, School of Public Health, University of Memphis, Memphis, Tenn
| | - Hongmei Zhang
- Division of Epidemiology, Biostatistics and Environmental Health, School of Public Health, University of Memphis, Memphis, Tenn
| | - John W Holloway
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom; Human Development and Health, Faculty of Medicine, University of Southampton, Southampton General Hospital, Southampton, United Kingdom
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17
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Abstract
Mosquito-borne diseases affect horses worldwide. Mosquito-borne diseases generally cause encephalomyelitis in the horse and can be difficult to diagnose antemortem. In addition to general disease, and diagnostic and treatment aspects, this review article summarizes the latest information on these diseases, covering approximately the past 5 years, with a focus on new equine disease encroachments, diagnostic and vaccination aspects, and possible therapeutics on the horizon.
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18
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Viral Vector Vaccines To Treat Colorectal Cancer. CURRENT COLORECTAL CANCER REPORTS 2013. [DOI: 10.1007/s11888-013-0185-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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19
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Iankov ID, Federspiel MJ, Galanis E. Measles virus expressed Helicobacter pylori neutrophil-activating protein significantly enhances the immunogenicity of poor immunogens. Vaccine 2013; 31:4795-801. [PMID: 23948230 DOI: 10.1016/j.vaccine.2013.07.085] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 07/04/2013] [Accepted: 07/31/2013] [Indexed: 12/21/2022]
Abstract
Helicobacter pylori neutrophil-activating protein (NAP) is a toll-like receptor 2 (TLR2) agonist and potent immunomodulator inducing Th1-type immune response. Here we present data about characterization of the humoral immune response against NAP-tagged antigens, encoded by attenuated measles virus (MV) vector platform, in MV infection susceptible type I interferon receptor knockout and human CD46 transgenic (Ifnarko-CD46Ge) mice. Immunogenicity of MV expressing a full-length human immunoglobulin lambda light chain (MV-lambda) was compared to that of MV expressing lambda-NAP chimeric protein (MV-lambda-NAP). MV-lambda-NAP immunized Ifnarko-CD46Ge mice developed significantly higher (6-20-fold) anti-lambda ELISA titers as compared to the MV-lambda-immunized control animal group, indicating that covalently-linked NAP co-expression significantly enhanced lambda immunogenicity. In contrast, ELISA titers against MV antigens were not significantly different between the animals vaccinated with MV-lambda or MV-lambda-NAP. NAP-tagged antigen expression did not affect development of protective anti-measles immunity. Both MV-lambda and MV-lambda-NAP-immunized groups showed strong virus neutralization serum titers in plaque reduction microneutralization test. These results demonstrated that MV-encoded lambda-NAP is highly immunogenic as compared to the unmodified full-length lambda chain. Boost of immune response to poor immunogens using live vectors expressing NAP-tagged chimeric antigens is an attractive approach with potential application in immunoprophylaxis of infectious diseases and cancer immunotherapy.
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Affiliation(s)
- Ianko D Iankov
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN 55905, USA.
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20
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Osada T, Morse MA, Hobeika A, Lyerly HK. Novel recombinant alphaviral and adenoviral vectors for cancer immunotherapy. Semin Oncol 2012; 39:305-10. [PMID: 22595053 DOI: 10.1053/j.seminoncol.2012.02.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Although cellular immunotherapy based on autolgous dendritic cells (DCs) targeting antigens expressed by metastatic cancer has demonstrated clinical efficacy, the logistical challenges in generating an individualized cell product create an imperative to develop alternatives to DC-based cancer vaccines. Particularly attractive alternatives include in situ delivery of antigen and activation signals to resident antigen-presenting cells (APCs), which can be achieved by novel fusion molecules targeting the mannose receptor and by recombinant viral vectors expressing the antigen of interest and capable of infecting DCs. A particular challenge in the use of viral vectors is the well-appreciated clinical obstacles to their efficacy, specifically vector-specific neutralizing immune responses. Because heterologous prime and boost strategies have been demonstrated to be particularly potent, we developed two novel recombinant vectors based on alphaviral replicon particles and a next-generation adenovirus encoding an antigen commonly overexpressed in many human cancers, carcinoembryonic antigen (CEA). The rationale for developing these vectors, their unique characteristics, the preclinical studies and early clinical experience with each, and opportunities to enhance their effectiveness will be reviewed. The potential of each of these potent recombinant vectors to efficiently generate clinically active anti-tumor immune response alone, or in combination, will be discussed.
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Affiliation(s)
- Takuya Osada
- Department of Surgery, Duke University Medical Center, Durham, NC 27710, USA
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