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Koya T, Yoshida K, Togi M, Niida Y, Togi S, Ura H, Mizuta S, Kato T, Yamada S, Shibata T, Liu YC, Yuan SS, Wu DC, Kobayashi H, Utsugisawa T, Kanno H, Shimodaira S. Clinical Trial on the Safety and Tolerability of Personalized Cancer Vaccines Using Human Platelet Lysate-Induced Antigen-Presenting Cells. Cancers (Basel) 2023; 15:3627. [PMID: 37509288 PMCID: PMC10377585 DOI: 10.3390/cancers15143627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 06/27/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Research and development of personalized cancer vaccines as precision medicine are ongoing. We predicted human leukocyte antigen (HLA)-compatible cancer antigen candidate peptides based on patient-specific cancer genomic profiles and performed a Phase I clinical trial for the safety and tolerability of cancer vaccines with human platelet lysate-induced antigen-presenting cells (HPL-APCs) from peripheral monocytes. Among the five enrolled patients, two patients completed six doses per course (2-3 × 107 cells per dose), and an interim analysis was performed based on the immune response. An immune response was detected by enzyme-linked immunosorbent spot (ELISpot) assays to HLA-A*33:03-matched KRASWT, HLA-DRB1*09:01-compliant KRASWT or G12D, or HLA-A*31:01-matched SMAD4WT, and HLA-DRB1*04:01-matched SMAD4G365D peptides in two completed cases, respectively. Moreover, SMAD4WT-specific CD8+ effector memory T cells were amplified. However, an attenuation of the acquired immune response was observed 6 months after one course of cancer vaccination as the disease progressed. This study confirmed the safety and tolerability of HPL-APCs in advanced and recurrent cancers refractory to standard therapy and is the first clinical report to demonstrate the immunoinducibility of personalized cancer vaccines using HPL-APCs. Phase II clinical trials to determine immune responses with optimized adjuvant drugs and continued administration are expected to demonstrate efficacy.
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Affiliation(s)
- Terutsugu Koya
- Department of Regenerative Medicine, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
- Center for Regenerative Medicine, Kanazawa Medical University Hospital, Kahoku 920-0293, Ishikawa, Japan
| | - Kenichi Yoshida
- Center for Regenerative Medicine, Kanazawa Medical University Hospital, Kahoku 920-0293, Ishikawa, Japan
| | - Misa Togi
- Department of Regenerative Medicine, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
- Center for Regenerative Medicine, Kanazawa Medical University Hospital, Kahoku 920-0293, Ishikawa, Japan
| | - Yo Niida
- Division of Genomic Medicine, Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Sumihito Togi
- Division of Genomic Medicine, Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Hiroki Ura
- Division of Genomic Medicine, Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Shuichi Mizuta
- Department of Hematology and Immunology, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Tomohisa Kato
- Division of Stem Cell Medicine, Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Sohsuke Yamada
- Department of Pathology and Laboratory Medicine, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Takeo Shibata
- Department of Obstetrics and Gynecology, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
| | - Yi-Chang Liu
- Division of Hematology and Oncology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Shyng-Shiou Yuan
- Office of Research & Development, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Deng-Chyang Wu
- Internal Medicine, School of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Hirohito Kobayashi
- Division of Transfusion and Cell Therapy, Tokyo Women's Medical University, Adachi Medical Center, Adachi 123-8558, Tokyo, Japan
| | - Taiju Utsugisawa
- Department of Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Shinjuku 162-8666, Tokyo, Japan
| | - Hitoshi Kanno
- Department of Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Shinjuku 162-8666, Tokyo, Japan
| | - Shigetaka Shimodaira
- Department of Regenerative Medicine, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
- Center for Regenerative Medicine, Kanazawa Medical University Hospital, Kahoku 920-0293, Ishikawa, Japan
- Division of Stem Cell Medicine, Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Kahoku 920-0293, Ishikawa, Japan
- Department of Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Shinjuku 162-8666, Tokyo, Japan
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Zhang X, Xu Z, Dai X, Zhang X, Wang X. Research progress of neoantigen-based dendritic cell vaccines in pancreatic cancer. Front Immunol 2023; 14:1104860. [PMID: 36761724 PMCID: PMC9905145 DOI: 10.3389/fimmu.2023.1104860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 01/04/2023] [Indexed: 01/26/2023] Open
Abstract
The mutation of the crucial genes such as tumor suppressors or oncogenes plays an important role in the initiation and development of tumors. The non-synonymous mutations in the tumor cell genome will produce non-autologous proteins (neoantigen) to activate the immune system by activating CD4+ and CD8+ T cells. Neoantigen-based peptide vaccines have exhibited exciting therapeutic effects in treating various cancers alone or in combination with other therapeutic strategies. Furthermore, antigen-loaded DC vaccines are more powerful in inducing stronger immune responses than vaccines generated by antigens and adjuvants. Therefore, neoantigen-based dendritic cell (DC) vaccines could achieve promising effects in combating some malignant tumors. In this review, we summarized and discussed the recent research progresses of the neoantigen, neoantigen-based vaccines, and DC-based vaccine in pancreatic cancers (PCs). The combination of the neoantigen and DC-based vaccine in PC was also highlighted. Therefore, our work will provide more detailed evidence and novel opinions to promote the development of a personalized neoantigen-based DC vaccine for PC.
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Affiliation(s)
- Xin Zhang
- Department of Pathology, China-Japan Union Hospital, Jilin University, Changchun, Jilin, China
| | - Zheng Xu
- Department of Pathology, China-Japan Union Hospital, Jilin University, Changchun, Jilin, China
| | - Xiangpeng Dai
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital of Jilin University, Changchun, China,National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital of Jilin University, Changchun, China
| | - Xiaoling Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital of Jilin University, Changchun, China,National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital of Jilin University, Changchun, China
| | - Xueju Wang
- Department of Pathology, China-Japan Union Hospital, Jilin University, Changchun, Jilin, China,*Correspondence: Xueju Wang,
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Zhang L, Zhou X, Sha H, Xie L, Liu B. Recent Progress on Therapeutic Vaccines for Breast Cancer. Front Oncol 2022; 12:905832. [PMID: 35734599 PMCID: PMC9207208 DOI: 10.3389/fonc.2022.905832] [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: 03/27/2022] [Accepted: 05/11/2022] [Indexed: 11/13/2022] Open
Abstract
Breast cancer remains the most frequently diagnosed malignancy worldwide. Advanced breast cancer is still an incurable disease mainly because of its heterogeneity and limited immunogenicity. The great success of cancer immunotherapy is paving the way for a new era in cancer treatment, and therapeutic cancer vaccination is an area of interest. Vaccine targets include tumor-associated antigens and tumor-specific antigens. Immune responses differ in different vaccine delivery platforms. Next-generation sequencing technologies and computational analysis have recently made personalized vaccination possible. However, only a few cases benefiting from neoantigen-based treatment have been reported in breast cancer, and more attention has been given to overexpressed antigen-based treatment, especially human epidermal growth factor 2-derived peptide vaccines. Here, we discuss recent advancements in therapeutic vaccines for breast cancer and highlight near-term opportunities for moving forward.
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Affiliation(s)
- Lianru Zhang
- The Comprehensive Cancer Centre of Drum Tower Hospital, Medical School of Nanjing University & Clinical Cancer Institute of Nanjing University, Nanjing, China
| | - Xipeng Zhou
- Department of oncology, Yizheng People's Hospital, Yangzhou, China
| | - Huizi Sha
- The Comprehensive Cancer Centre of Drum Tower Hospital, Medical School of Nanjing University & Clinical Cancer Institute of Nanjing University, Nanjing, China
| | - Li Xie
- The Comprehensive Cancer Centre of Drum Tower Hospital, Medical School of Nanjing University & Clinical Cancer Institute of Nanjing University, Nanjing, China
| | - Baorui Liu
- The Comprehensive Cancer Centre of Drum Tower Hospital, Medical School of Nanjing University & Clinical Cancer Institute of Nanjing University, Nanjing, China
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Duwa R, Jeong JH, Yook S. Immunotherapeutic strategies for the treatment of ovarian cancer: current status and future direction. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2020.11.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Personalized neoantigen pulsed dendritic cell vaccine for advanced lung cancer. Signal Transduct Target Ther 2021; 6:26. [PMID: 33473101 PMCID: PMC7817684 DOI: 10.1038/s41392-020-00448-5] [Citation(s) in RCA: 114] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 02/06/2023] Open
Abstract
Neoantigens are considered to be ultimate target of tumor immunotherapy due to their high tumor specificity and immunogenicity. Dendritic cell (DCs) vaccines based on neoantigens have exciting effects in treatment of some malignant tumors and are a promising therapeutic modality. Lung cancer is a lethal disease with the highest morbidity and mortality rate in the world. Despite the rapid development of targeted therapy and immune checkpoint inhibitors for lung cancer in recent years, their efficacy is still unsatisfactory overall. Therefore, there is an urgent unmet clinical need for lung cancer treatment. Here, we attempted to treat lung cancer using a personalized neoantigen peptide-pulsed autologous DC vaccine and conducted a single-arm, 2 medical centers, pilot study initiated by the investigator (ChiCTR-ONC-16009100, NCT02956551). The patients enrolled were patients with heavily treated metastatic lung cancer. Candidate neoantigens were derived from whole-exome sequencing and RNA sequencing of fresh biopsy tissues as well as bioinformatics analysis. A total of 12 patients were enrolled in this study. A total of 85 vaccine treatments were administered with a median value of 5 doses/person (range: 3-14 doses/person). In total, 12-30 peptide-based neoantigens were selected for each patient. All treatment-related adverse events were grade 1-2 and there were no delays in dosing due to toxic effects. The objective effectiveness rate was 25%; the disease control rate was 75%; the median progression-free survival was 5.5 months and the median overall survival was 7.9 months. This study provides new evidence for neoantigen vaccine therapy and new therapeutic opportunities for lung cancer treatment.
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Zhang R, Tang L, Tian Y, Ji X, Hu Q, Zhou B, Zhenyu D, Heng X, Yang L. Cholesterol-modified DP7 enhances the effect of individualized cancer immunotherapy based on neoantigens. Biomaterials 2020; 241:119852. [PMID: 32120313 DOI: 10.1016/j.biomaterials.2020.119852] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 02/01/2020] [Accepted: 02/07/2020] [Indexed: 02/07/2023]
Abstract
Personalized cancer vaccines based on neoantigens have become an important research direction in cancer immunotherapy. However, their therapeutic effects are limited by the efficiency of antigen uptake and presentation by antigen presenting cells. Here, the low-toxicity cholesterol-modified antimicrobial peptide (AMP) DP7 (DP7-C), which has dual functions as a carrier and an immune adjuvant, improved the dendritic cell (DC)-based vaccine efficacy. As a delivery carrier, DP7-C can efficiently delivery various antigen peptides into 75-95% of DCs via caveolin- and clathrin-dependent pathways. As an immune adjuvant, DP7-C can induce DC maturation and proinflammatory cytokine release via the TLR2-MyD88-NF-κB pathway and effectively increase antigen presentation efficiency. In addition, DP7-C enhanced the efficacy of DC-based individualized cancer immunotherapy and achieved excellent antitumor effects on mouse tumor models using the OVA antigen peptides and LL2-neoantigens. Excitingly, after DP7-C stimulation, the antigen uptake efficiency of monocytes-derived DCs (MoDCs) in patients with advanced lung cancer increased from 14-40% to 88-98%, the presentation efficiency increased from approximately 15% to approximately 65%, and the proportion of mature MoDCs increased from approximately 20% to approximately 60%. These findings suggest that our approach may be a potentially alternative strategy to produce cancer vaccines designed for individual patients.
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Affiliation(s)
- Rui Zhang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Lin Tang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yaomei Tian
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xiao Ji
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Qiuyue Hu
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Bailing Zhou
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ding Zhenyu
- Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Xu Heng
- Precision Medicine Center, State Key Laboratory of Biotherapy, and Precision Medicine Key Laboratory of Sichuan Province, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Li Yang
- State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China.
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Arab A, Yazdian-Robati R, Behravan J. HER2-Positive Breast Cancer Immunotherapy: A Focus on Vaccine Development. Arch Immunol Ther Exp (Warsz) 2020; 68:2. [PMID: 31915932 PMCID: PMC7223380 DOI: 10.1007/s00005-019-00566-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 12/16/2019] [Indexed: 02/07/2023]
Abstract
Clinical progress in the field of HER2-positive breast cancer therapy has been dramatically improved by understanding of the immune regulatory mechanisms of tumor microenvironment. Passive immunotherapy utilizing recombinant monoclonal antibodies (mAbs), particularly trastuzumab and pertuzumab has proved to be an effective strategy in HER2-positive breast cancer treatment. However, resistance to mAb therapy and relapse of disease are still considered important challenges in clinical practice. There are increasing reports on the induction of cellular and humoral immune responses in HER2-positive breast cancer patients. More recently, increasing efforts are focused on using HER2-derived peptide vaccines for active immunotherapy. Here, we discuss the development of various HER2-derived vaccines tested in animal models and human clinical trials. Different formulations and strategies to improve immunogenicity of the antigens in animal studies are also discussed. Furthermore, other immunotherapeutic approaches to HER2 breast cancer including, CTLA-4 inhibitors, immune checkpoint inhibitors, anti PD-1/PD-L1 antibodies are presented.
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Affiliation(s)
- Atefeh Arab
- Pharmaceutical Sciences Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Rezvan Yazdian-Robati
- Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Javad Behravan
- Biotechnology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. .,School of Pharmacy, University of Waterloo, Waterloo, ON, Canada. .,Theraphage Inc., Kitchener, ON, Canada.
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Abstract
Liver cancer is a particularly aggressive group of malignancies with historically low survival rates. Despite advancements in cancer treatments in general in the last few decades, incidence and mortality have not changed. Even though some phase 1 and 2 studies have shown promising results, many medication have failed to reach a sustainable level of efficacy to move into the clinical setting. Immunotherapy drugs have shown impressive results in the treatment of specific immunogenic cancers, prompting the possibility of their use in liver cancers. Immunotherapy medications approved for other cancers have received FDA accelerated approval for treatment of hepatocellular carcinoma. But, these approvals are contingent upon verification and description of clinical benefit in confirmatory trials. With more treatments in development involving cancer vaccines and natural killer cell-mediated therapy, liver cancer treatment is being reinvigorated with a broad array of new treatment angles. In this review article, we discuss these treatments, focusing on mechanism of action and clinical trials. Much needed advancements in treating late- and early-stage liver cancers will require new and innovative immunotherapeutic treatments.
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Affiliation(s)
- Christoffer Briggs Lambring
- Graduate School of Biomedical Sciences, The University of North Texas Health Science Center, Fort Worth, Texas
| | | | | | - Riyaz Basha
- Graduate School of Biomedical Sciences, The University of North Texas Health Science Center, Fort Worth, Texas
- Department of Pediatrics and Women’s Health, Texas College of Osteopathic Medicine, The University of North Texas Health Science Center, Fort Worth, Texas
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Gornati L, Zanoni I, Granucci F. Dendritic Cells in the Cross Hair for the Generation of Tailored Vaccines. Front Immunol 2018; 9:1484. [PMID: 29997628 PMCID: PMC6030256 DOI: 10.3389/fimmu.2018.01484] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 06/14/2018] [Indexed: 12/14/2022] Open
Abstract
Vaccines represent the discovery of utmost importance for global health, due to both prophylactic action to prevent infections and therapeutic intervention in neoplastic diseases. Despite this, current vaccination strategies need to be refined to successfully generate robust protective antigen-specific memory immune responses. To address this issue, one possibility is to exploit the high efficiency of dendritic cells (DCs) as antigen-presenting cells for T cell priming. DCs functional plasticity allows shaping the outcome of immune responses to achieve the required type of immunity. Therefore, the choice of adjuvants to guide and sustain DCs maturation, the design of multifaceted vehicles, and the choice of surface molecules to specifically target DCs represent the key issues currently explored in both preclinical and clinical settings. Here, we review advances in DCs-based vaccination approaches, which exploit direct in vivo DCs targeting and activation options. We also discuss the recent findings for efficient antitumor DCs-based vaccinations and combination strategies to reduce the immune tolerance promoted by the tumor microenvironment.
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Affiliation(s)
- Laura Gornati
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Ivan Zanoni
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy.,Division of Gastroenterology, Harvard Medical School, Boston Children's Hospital, Boston, MA, United States
| | - Francesca Granucci
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
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Li W, Song X, Yu H, Zhang M, Li F, Cao C, Jiang Q. Dendritic cell-based cancer immunotherapy for pancreatic cancer. Arab J Gastroenterol 2018. [PMID: 29526540 DOI: 10.1016/j.ajg.2017.05.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Pancreatic cancer (PC) is a lethal disease and remains one of the most resistant cancers to traditional therapies. New therapeutic modalities are urgently needed, particularly immunotherapy, which has shown promise in numerous animal model studies. Dendritic cell (DC)-based immunotherapy has been used in clinical trials for various cancers, including PC, because DCs are the most potent antigen-presenting cell (APC), which are capable of priming naive T cells and stimulating memory T cells to generate antigen-specific responses. In this paper, we review the preclinical and clinical efforts towards the application of DCs for PC.
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Affiliation(s)
- Wei Li
- Laboratory of Nuclear and Radiation Damage, The General Hospital of The PLA Rocket Force, Beijing 100088, China
| | - Xiujun Song
- Laboratory of Nuclear and Radiation Damage, The General Hospital of The PLA Rocket Force, Beijing 100088, China
| | - Huijie Yu
- Laboratory of Nuclear and Radiation Damage, The General Hospital of The PLA Rocket Force, Beijing 100088, China
| | - Manze Zhang
- Laboratory of Nuclear and Radiation Damage, The General Hospital of The PLA Rocket Force, Beijing 100088, China
| | - Fengsheng Li
- Laboratory of Nuclear and Radiation Damage, The General Hospital of The PLA Rocket Force, Beijing 100088, China
| | - Cheng Cao
- Beijing Institute of Biotechnology, Beijing 100850, China.
| | - Qisheng Jiang
- Laboratory of Nuclear and Radiation Damage, The General Hospital of The PLA Rocket Force, Beijing 100088, China.
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Effective antitumor peptide vaccines can induce severe autoimmune pathology. Oncotarget 2017; 8:70317-70331. [PMID: 29050282 PMCID: PMC5642557 DOI: 10.18632/oncotarget.19688] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 06/26/2017] [Indexed: 12/21/2022] Open
Abstract
Immunotherapy has shown a tremendous success in treating cancer. Unfortunately, this success is frequently associated with severe autoimmune pathology. In this study, we used the transgenic RIP-gp mouse model to assess the antitumor therapeutic benefit of peptide vaccination while evaluating the possible associated autoimmune pathology. We report that palmitoylated gp33-41 peptide and poly-IC adjuvant vaccine (BiVax) generated ∼ 5-10 % of antigen specific T cell responses in wild type and supposedly immune tolerant RIP-gp mice. Boosting with BiVax in combination with αCD40 antibody (TriVax) or BiVax in combination with IL-2/αIL-2 antibody complexes (IL2Cx) significantly increased the immune responses (∼30-50%). Interestingly, although both boosts were equally effective in generating vast T cell responses, BiVax/IL2Cx showed better control of tumor growth than TriVax. However, this effect was associated with high incidence of diabetes in an antigen and CD8 dependent fashion. T cell responses generated by BiVax/IL2Cx, but not those generated by TriVax were highly resistant to PD-1/PD-L1 inhibitory signals. Nevertheless, PD-1 blockade enhanced the ability of TriVax to control tumor growth but increased the incidence of diabetes. Finally, we show that severe autoimmunity by BiVax/IL2Cx was prevented while preserving outstanding antitumor responses by utilizing a tumor antigen not expressed in the pancreas. Our data provides a clear evidence that peptide based vaccines can expand vast endogenous T cell responses which effectively control tumor growth but with high potential of autoimmune pathology.
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Chang JH, Jiang Y, Pillarisetty VG. Role of immune cells in pancreatic cancer from bench to clinical application: An updated review. Medicine (Baltimore) 2016; 95:e5541. [PMID: 27930550 PMCID: PMC5266022 DOI: 10.1097/md.0000000000005541] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Pancreatic cancer (PC) remains difficult to treat, despite the recent advances in various anticancer therapies. Immuno-inflammatory response is considered to be a major risk factor for the development of PC in addition to a combination of genetic background and environmental factors. Although patients with PC exhibit evidence of systemic immune dysfunction, the PC microenvironment is replete with immune cells. METHODS We searched PubMed for all relevant English language articles published up to March 2016. They included clinical trials, experimental studies, observational studies, and reviews. Trials enrolled at Clinical trial.gov were also searched. RESULTS PC induces an immunosuppressive microenvironment, and intratumoral activation of immunity in PC is attenuated by inhibitory signals that limit immune effector function. Multiple types of immune responses can promote an immunosuppressive microenvironment; key regulators of the host tumor immune response are dendritic cells, natural killer cells, macrophages, myeloid derived suppressor cells, and T cells. The function of these immune cells in PC is also influenced by chemotherapeutic agents and the components in tumor microenvironment such as pancreatic stellate cells. Immunotherapy of PC employs monoclonal antibodies/effector cells generated in vitro or vaccination to stimulate antitumor response. Immune therapy in PC has failed to improve overall survival; however, combination therapies comprising immune checkpoint inhibitors and vaccines have been attempted to increase the response. CONCLUSION A number of studies have begun to elucidate the roles of immune cell subtypes and their capacity to function or dysfunction in the tumor microenvironment of PC. It will not be long before immune therapy for PC becomes a clinical reality.
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Affiliation(s)
- Jae Hyuck Chang
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yongjian Jiang
- Department of Pancreatic Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Venu G. Pillarisetty
- Department of Surgery, University of Washington Medical Center, Seattle, University of Washington, Seattle, WA
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