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Delwar Z, Tatsiy O, Chouljenko DV, Lee IF, Liu G, Liu X, Bu L, Ding J, Singh M, Murad YM, Jia WWG. Prophylactic Vaccination and Intratumoral Boost with HER2-Expressing Oncolytic Herpes Simplex Virus Induces Robust and Persistent Immune Response against HER2-Positive Tumor Cells. Vaccines (Basel) 2023; 11:1805. [PMID: 38140209 PMCID: PMC10747554 DOI: 10.3390/vaccines11121805] [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: 09/27/2023] [Revised: 11/11/2023] [Accepted: 11/28/2023] [Indexed: 12/24/2023] Open
Abstract
The development of effective cancer vaccines remains a significant challenge due to immune tolerance and limited clinical benefits. Oncolytic herpes simplex virus type 1 (oHSV-1) has shown promise as a cancer therapy, but efficacy is often limited in advanced cancers. In this study, we constructed and characterized a novel oHSV-1 virus (VG22401) expressing the human epidermal growth factor receptor 2 (HER2), a transmembrane glycoprotein overexpressed in many carcinomas. VG22401 exhibited efficient replication and HER2 payload expression in both human and mouse colorectal cancer cells. Mice immunized with VG22401 showed significant binding of serum anti-HER2 antibodies to HER2-expressing tumor cells, inducing antibody-dependent cell-mediated cytotoxicity (ADCC) and complement-dependent cytotoxicity (CDC). Furthermore, mice primed with VG22401 and intratumorally boosted with the same virus showed enhanced antitumor efficacy in a bilateral syngeneic HER2(+) tumor model, compared to HER2-null backbone virus. This effect was accompanied by the induction of anti-HER2 T cell responses. Our findings suggest that peripheral priming with HER2-expressing oHSV-1 followed by an intratumoral boost with the same virus can significantly enhance antitumor immunity and efficacy, presenting a promising strategy for cancer immunotherapy.
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Wei L, Zhang Y, Wang R, Liu S, Luo J, Ma Y, Wang H, Liu Y, Chen Y. Heteroantigen-assembled nanovaccine enhances the polyfunctionality of TILs against tumor growth and metastasis. Biomaterials 2023; 302:122297. [PMID: 37666102 DOI: 10.1016/j.biomaterials.2023.122297] [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: 02/20/2023] [Revised: 07/26/2023] [Accepted: 08/26/2023] [Indexed: 09/06/2023]
Abstract
The dysfunction of tumor infiltrating lymphocytes (TILs) directly correlates with out of control of tumor growth and metastasis. New approaches and insightful clarity for rescuing TILs dysfunction are urgently needed. Here, we design two heterogenous antigens based on MHC-I epitope and MHC-II epitope from tumor, and assemble heterogenous antigens by electrostatic interactions and π-π stacking into heteroantigen-assembled nanovaccine (HANV). HANV not only significantly increases the abundance of CD8+ and CD4+ TILs, but also elicits stronger polyfunctionality of CD8+ and CD4+ TILs in vivo. Enhanced polyfunctionality of CD8+ and CD4+ TILs positively correlate to suppression of tumor growth and metastasis in melanoma-bearing mouse models. We also validate that nucleotide-binding oligomerization domain-containing protein 2 (NOD2) dominantly enhances anti-tumor capacity of TILs in a temporal immunoregulation manner. This work presents a new insight in developing HANV as a rational strategy to shape TILs polyfunctionality for tumor growth and metastasis.
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Affiliation(s)
- Liangnian Wei
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College; Kunming, Yunnan, 650000, China; State Key Laboratory of Reproductive Medicine, Department of Prenatal Diagnosis, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Hospital, Nanjing Medical University; Nanjing 211166, China; Department of Immunology, Key Laboratory of Immunological Environment and Disease, Key Laboratory of Human Functional Genomics of Jiangsu Province, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Personalized Cancer Medicine, Gusu School, Nanjing Medical University; Nanjing 211166, China; Department of Epidemiology, National Vaccine Innovation Platform, Center for Global Health, Nanjing Medical University, Nanjing, China; Department of Central Laboratory, The Affiliated Huai'an N0.1 People's Hospital, Nanjing Medical University, Huai'an, 223300, China
| | - Ye Zhang
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College; Kunming, Yunnan, 650000, China
| | - Ruixin Wang
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College; Kunming, Yunnan, 650000, China
| | - Shuai Liu
- State Key Laboratory of Reproductive Medicine, Department of Prenatal Diagnosis, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Hospital, Nanjing Medical University; Nanjing 211166, China; Department of Immunology, Key Laboratory of Immunological Environment and Disease, Key Laboratory of Human Functional Genomics of Jiangsu Province, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Personalized Cancer Medicine, Gusu School, Nanjing Medical University; Nanjing 211166, China; Department of Epidemiology, National Vaccine Innovation Platform, Center for Global Health, Nanjing Medical University, Nanjing, China; Department of Central Laboratory, The Affiliated Huai'an N0.1 People's Hospital, Nanjing Medical University, Huai'an, 223300, China
| | - Jia Luo
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College; Kunming, Yunnan, 650000, China
| | - Yunfei Ma
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College; Kunming, Yunnan, 650000, China
| | - Hao Wang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing, 100190, China.
| | - Ye Liu
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College; Kunming, Yunnan, 650000, China; State Key Laboratory of Respiratory Health and Multimorbidity, Beijing, 100190, China; Key Laboratory of Pathogen Infection Prevention and Control (Peking Union Medical College), Ministry of Education, Beijing, 100190, China.
| | - Yun Chen
- State Key Laboratory of Reproductive Medicine, Department of Prenatal Diagnosis, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Hospital, Nanjing Medical University; Nanjing 211166, China; Department of Immunology, Key Laboratory of Immunological Environment and Disease, Key Laboratory of Human Functional Genomics of Jiangsu Province, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Personalized Cancer Medicine, Gusu School, Nanjing Medical University; Nanjing 211166, China; Department of Epidemiology, National Vaccine Innovation Platform, Center for Global Health, Nanjing Medical University, Nanjing, China; Department of Central Laboratory, The Affiliated Huai'an N0.1 People's Hospital, Nanjing Medical University, Huai'an, 223300, China.
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Buchta Rosean C, Leyder EC, Hamilton J, Carter JJ, Galloway DA, Koelle DM, Nghiem P, Heiland T. LAMP1 targeting of the large T antigen of Merkel cell polyomavirus results in potent CD4 T cell responses and tumor inhibition. Front Immunol 2023; 14:1253568. [PMID: 37711623 PMCID: PMC10499392 DOI: 10.3389/fimmu.2023.1253568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/14/2023] [Indexed: 09/16/2023] Open
Abstract
Introduction Most cases of Merkel cell carcinoma (MCC), a rare and highly aggressive type of neuroendocrine skin cancer, are associated with Merkel cell polyomavirus (MCPyV) infection. MCPyV integrates into the host genome, resulting in expression of oncoproteins including a truncated form of the viral large T antigen (LT) in infected cells. These oncoproteins are an attractive target for a therapeutic cancer vaccine. Methods We designed a cancer vaccine that promotes potent, antigen-specific CD4 T cell responses to MCPyV-LT. To activate antigen-specific CD4 T cells in vivo, we utilized our nucleic acid platform, UNITE™ (UNiversal Intracellular Targeted Expression), which fuses a tumor-associated antigen with lysosomal-associated membrane protein 1 (LAMP1). This lysosomal targeting technology results in enhanced antigen presentation and potent antigen-specific T cell responses. LTS220A, encoding a mutated form of MCPyV-LT that diminishes its pro-oncogenic properties, was introduced into the UNITE™ platform. Results Vaccination with LTS220A-UNITE™ DNA vaccine (ITI-3000) induced antigen-specific CD4 T cell responses and a strong humoral response that were sufficient to delay tumor growth of a B16F10 melanoma line expressing LTS220A. This effect was dependent on the CD4 T cells' ability to produce IFNγ. Moreover, ITI-3000 induced a favorable tumor microenvironment (TME), including Th1-type cytokines and significantly enhanced numbers of CD4 and CD8 T cells as well as NK and NKT cells. Additionally, ITI-3000 synergized with an α-PD-1 immune checkpoint inhibitor to further slow tumor growth and enhance survival. Conclusions These findings strongly suggest that in pre-clinical studies, DNA vaccination with ITI-3000, using the UNITE™ platform, enhances CD4 T cell responses to MCPyV-LT that result in significant anti-tumor immune responses. These data support the initiation of a first-in-human (FIH) Phase 1 open-label study to evaluate the safety, tolerability, and immunogenicity of ITI-3000 in patients with polyomavirus-positive MCC (NCT05422781).
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Affiliation(s)
| | | | | | - Joseph J. Carter
- Human Biology Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Denise A. Galloway
- Human Biology Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - David M. Koelle
- Department of Medicine, University of Washington, Seattle, WA, United States
- Vaccine and Infectious Diseases Division, Fred Hutchinson Cancer Center, Seattle, WA, United States
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, United States
- Department of Global Health, University of Washington, Seattle, WA, United States
- Department of Translational Research, Benaroya Research Institute, Seattle, WA, United States
| | - Paul Nghiem
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA, United States
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, WA, United States
| | - Teri Heiland
- Immunomic Therapeutics Inc., Rockville, MD, United States
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Ihle CL, Wright-Hobart SJ, Owens P. Therapeutics targeting the metastatic breast cancer bone microenvironment. Pharmacol Ther 2022; 239:108280. [DOI: 10.1016/j.pharmthera.2022.108280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 08/30/2022] [Accepted: 09/12/2022] [Indexed: 11/27/2022]
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Adhikari AS, Macauley J, Johnson Y, Connolly M, Coleman T, Heiland T. Development and Characterization of an HCMV Multi-Antigen Therapeutic Vaccine for Glioblastoma Using the UNITE Platform. Front Oncol 2022; 12:850546. [PMID: 35651802 PMCID: PMC9149224 DOI: 10.3389/fonc.2022.850546] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 03/18/2022] [Indexed: 01/10/2023] Open
Abstract
Glioblastoma multiforme (GBM) is an aggressive form of brain cancer with a median survival of 15 months that has remained unchanged despite advances in the standard of care. GBM cells express human cytomegalovirus (HCMV) proteins, providing a unique opportunity for targeted therapy. We utilized our UNITE (UNiversal Intracellular Targeted Expression) platform to develop a multi-antigen DNA vaccine (ITI-1001) that codes for the HCMV proteins pp65, gB, and IE-1. The UNITE platform involves lysosomal targeting technology, fusing lysosome-associated membrane protein 1 (LAMP1) with target ntigens. We demonstrate evidence of increased antigen presentation by both MHC-I and -II, delivering a robust antigen-specific CD4 and CD8 T-cell response in addition to a strong humoral response. Using a syngeneic orthotopic GBM mouse model, therapeutic treatment with the ITI-1001 vaccine resulted in ~56% survival of tumor-bearing mice. Investigation of the tumor microenvironment showed significant CD4 infiltration as well as enhanced Th1 and cytotoxic CD8 T activation. Regulatory T cells were also upregulated after ITI-1001 vaccination. In addition, tumor burden negatively correlated with activated interferon (IFN)γ+ CD4 T cells, reiterating the importance of CD4 activation in ITI-1001 efficacy and in identifying treatment responders and non-responders. Further characterization of these two groups showed high infiltration of CD3+, CD4+, and CD8+ T cells in responders compared to non-responders. Thus, we show that vaccination with HCMV antigens using the ITI-1001-UNITE platform generates strong cellular and humoral immune responses, triggering significant antitumor activity, leading to enhanced survival in a mouse model of GBM.
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Affiliation(s)
| | | | | | - Mike Connolly
- Immunomic Therapeutics, Rockville, MD, United States
| | | | - Teri Heiland
- Immunomic Therapeutics, Rockville, MD, United States
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Li Y, Miao W, He D, Wang S, Lou J, Jiang Y, Wang S. Recent Progress on Immunotherapy for Breast Cancer: Tumor Microenvironment, Nanotechnology and More. Front Bioeng Biotechnol 2021; 9:680315. [PMID: 34150736 PMCID: PMC8207056 DOI: 10.3389/fbioe.2021.680315] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 05/10/2021] [Indexed: 12/17/2022] Open
Abstract
Immunotherapy is a major emerging treatment for breast cancer (BC). However, not all breast cancer patients derive benefit from immunotherapy. Predictive biomarkers of immunotherapy, such as tumor mutation burden and tumor-infiltrating lymphocytes, are promising to stratify the patients with BC and optimize the therapeutic effect. Various targets of the immune response pathway have also been explored to expand the modalities of immunotherapy. The use of nanotechnology for the imaging of predictive biomarkers and the combination with other therapeutic modalities presents a number of advantages for the immunotherapy of BC. In this review, we summary the emerging therapeutic modalities of immunotherapy, present prominent examples of immunotherapy in BC, and discuss the future opportunity of nanotechnology in the immunotherapy of BC.
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Affiliation(s)
- Yang Li
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wenfang Miao
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Doudou He
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Siqi Wang
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jianjuan Lou
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yanni Jiang
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shouju Wang
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Crosby EJ, Lyerly HK, Hartman ZC. Cancer vaccines: the importance of targeting oncogenic drivers and the utility of combinations with immune checkpoint inhibitors. Oncotarget 2021; 12:1-3. [PMID: 33456706 PMCID: PMC7800770 DOI: 10.18632/oncotarget.27861] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Indexed: 11/25/2022] Open
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