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Wan PKT, Ryan AJ, Seymour LW. Beyond cancer cells: Targeting the tumor microenvironment with gene therapy and armed oncolytic virus. Mol Ther 2021; 29:1668-1682. [PMID: 33845199 PMCID: PMC8116634 DOI: 10.1016/j.ymthe.2021.04.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 03/08/2021] [Accepted: 04/06/2021] [Indexed: 01/17/2023] Open
Abstract
Cancer gene therapies are usually designed either to express wild-type copies of tumor suppressor genes or to exploit tumor-associated phenotypic changes to endow selective cytotoxicity. However, these approaches become less relevant to cancers that contain many independent mutations, and the situation is made more complex by our increased understanding of clonal evolution of tumors, meaning that different metastases and even regions of the same tumor mass have distinct mutational and phenotypic profiles. In contrast, the relatively genetically stable tumor microenvironment (TME) therefore provides an appealing therapeutic target, particularly since it plays an essential role in promoting cancer growth, immune tolerance, and acquired resistance to many therapies. Recently, a variety of different TME-targeted gene therapy and armed oncolytic strategies have been explored, with particular success observed in strategies targeting the cancer stroma, reducing tumor vasculature, and repolarizing the immunosuppressive microenvironment. Herein, we review the progress of these TME-targeting approaches and try to highlight those showing the greatest promise.
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Affiliation(s)
| | - Anderson J Ryan
- Department Oncology, University of Oxford, Oxford OX3 7DQ, UK
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Wooster AL, Girgis LH, Brazeale H, Anderson TS, Wood LM, Lowe DB. Dendritic cell vaccine therapy for colorectal cancer. Pharmacol Res 2020; 164:105374. [PMID: 33348026 DOI: 10.1016/j.phrs.2020.105374] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/03/2020] [Accepted: 12/04/2020] [Indexed: 02/06/2023]
Abstract
Colorectal cancer (CRC) remains a leading cause of cancer-related deaths in the United States despite an array of available treatment options. Current standard-of-care interventions for this malignancy include surgical resection, chemotherapy, and targeted therapies depending on the disease stage. Specifically, infusion of anti-vascular endothelial growth factor agents in combination with chemotherapy was an important development in improving the survival of patients with advanced colorectal cancer, while also helping give rise to other forms of anti-angiogenic therapies. Yet, one approach by which tumor angiogenesis may be further disrupted is through the administration of a dendritic cell (DC) vaccine targeting tumor-derived blood vessels, leading to cytotoxic immune responses that decrease tumor growth and synergize with other systemic therapies. Early generations of such vaccines exhibited protection against various forms of cancer in pre-clinical models, but clinical results have historically been disappointing. Sipuleucel-T (Provenge®) was the first, and to-date, only dendritic cell-based therapy to receive FDA approval after significantly increasing overall survival in prostate cancer patients. The unparalleled success of Sipuleucel-T has helped revitalize the clinical development of dendritic cell vaccines, which will be examined in this review. We also highlight the promise of these vaccines to instill anti-angiogenic immunity for individuals with advanced colorectal cancer.
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Affiliation(s)
- Amanda L Wooster
- Department of Immunotherotherapeutics and Biotechnology, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, 79601, United States
| | - Lydia H Girgis
- Department of Immunotherotherapeutics and Biotechnology, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, 79601, United States
| | - Hayley Brazeale
- Department of Immunotherotherapeutics and Biotechnology, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, 79601, United States
| | - Trevor S Anderson
- Department of Immunotherotherapeutics and Biotechnology, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, 79601, United States
| | - Laurence M Wood
- Department of Immunotherotherapeutics and Biotechnology, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, 79601, United States
| | - Devin B Lowe
- Department of Immunotherotherapeutics and Biotechnology, Jerry H. Hodge School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX, 79601, United States.
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Tran T, Blanc C, Granier C, Saldmann A, Tanchot C, Tartour E. Therapeutic cancer vaccine: building the future from lessons of the past. Semin Immunopathol 2018; 41:69-85. [PMID: 29978248 DOI: 10.1007/s00281-018-0691-z] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 06/11/2018] [Indexed: 12/13/2022]
Abstract
Anti-cancer vaccines have raised many hopes from the start of immunotherapy but have not yet been clinically successful. The few positive results of anti-cancer vaccines have been observed in clinical situations of low tumor burden or preneoplastic lesions. Several new concepts and new results reposition this therapeutic approach in the field of immunotherapy. Indeed, cancers that respond to anti-PD-1/PD-L1 (20-30%) are those that are infiltrated by anti-tumor T cells with an inflammatory infiltrate. However, 70% of cancers do not appear to have an anti-tumor immune reaction in the tumor microenvironment. To induce this anti-tumor immunity, therapeutic combinations between vaccines and anti-PD-1/PD-L1 are being evaluated. In addition, the identification of neoepitopes against which the immune system is less tolerated is giving rise to a new enthusiasm by the first clinical results of the vaccine including these neoepitopes in humans. The ability of anti-cancer vaccines to induce a population of anti-tumor T cells called memory resident T cells that play an important role in immunosurveillance is also a new criterion to consider in the design of therapeutic vaccines.
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Affiliation(s)
- T Tran
- INSERM U970, Paris Cardiovascular Research Center (PARCC), Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - C Blanc
- INSERM U970, Paris Cardiovascular Research Center (PARCC), Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - C Granier
- INSERM U970, Paris Cardiovascular Research Center (PARCC), Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - A Saldmann
- INSERM U970, Paris Cardiovascular Research Center (PARCC), Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - C Tanchot
- INSERM U970, Paris Cardiovascular Research Center (PARCC), Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Eric Tartour
- INSERM U970, Paris Cardiovascular Research Center (PARCC), Paris, France.
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France.
- Hôpital Européen Georges Pompidou, Laboratory of Immunology, Assistance Publique des Hôpitaux de Paris, Paris, France.
- Equipe Labellisée Ligue Nationale contre le Cancer, Paris, France.
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Wagner SC, Ichim TE, Bogin V, Min WP, Silva F, Patel AN, Kesari S. Induction and characterization of anti-tumor endothelium immunity elicited by ValloVax therapeutic cancer vaccine. Oncotarget 2018; 8:28595-28613. [PMID: 28404894 PMCID: PMC5438675 DOI: 10.18632/oncotarget.15563] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 01/24/2017] [Indexed: 12/22/2022] Open
Abstract
ValloVax is a placental endothelium derived vaccine which induces tissue-nonspecific antitumor immunity by blocking tumor angiogesis. To elucidate mechanisms of action, we showed that production of ValloVax, which involves treating placental endothelial cells with IFN-gamma, results in upregulation of HLA and costimulatory molecules. It was shown that in mixed lymphocyte reaction, ValloVax induces Type I cytokines and allo-proliferative responses. Plasma from ValloVax immunized mice was capable of killing in vitro tumor-like endothelium but not control endothelium. Using defined antigens associated with tumor endothelial cells, specific molecular entities were identified as being targeted by ValloVax induced antibodies. Binding of predominantly IgG antibodies to ValloVax cells was confirmed by flow cytometry. Further suggesting direct killing of tumor endothelial cells was expression of TUNEL positive cells, as well as, reduction in tumor oxygenation. Supporting a role for antibody mediated responses, cell depletion experiments suggested a predominant role of B cells in maintaining an intact anti-tumor endothelial response. Adoptive transfer experiments suggested that infusion of CD3+ T cells from immunized mice was sufficient to transfer tumor protection. Generation of memory T cells selective to tumor endothelial specific markers was observed. Functional confirmation of memory responses was observed in tumor rechallenge experiments. Furthermore, we observed that both PD-1 or CTLA-4 blockade augmented antitumor effects of ValloVax. These data suggest a T cell induced B cell mediated anti-tumor endothelial response and set the framework clinical trials through elucidation of mechanism of action.
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Affiliation(s)
| | | | | | - Wei-Ping Min
- Department of Immunology, University of Western Ontario, London, Ontario, Canada
| | - Francisco Silva
- Department of Surgery, University of Miami School of Medicine, Miami, FL, USA
| | - Amit N Patel
- Department of Surgery, University of Miami School of Medicine, Miami, FL, USA
| | - Santosh Kesari
- John Wayne Cancer Institute and Pacific Neuroscience Institute, Santa Monica, CA, USA
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Sackstein R, Schatton T, Barthel SR. T-lymphocyte homing: an underappreciated yet critical hurdle for successful cancer immunotherapy. J Transl Med 2017; 97:669-697. [PMID: 28346400 PMCID: PMC5446300 DOI: 10.1038/labinvest.2017.25] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 01/17/2017] [Accepted: 01/22/2017] [Indexed: 12/13/2022] Open
Abstract
Advances in cancer immunotherapy have offered new hope for patients with metastatic disease. This unfolding success story has been exemplified by a growing arsenal of novel immunotherapeutics, including blocking antibodies targeting immune checkpoint pathways, cancer vaccines, and adoptive cell therapy (ACT). Nonetheless, clinical benefit remains highly variable and patient-specific, in part, because all immunotherapeutic regimens vitally hinge on the capacity of endogenous and/or adoptively transferred T-effector (Teff) cells, including chimeric antigen receptor (CAR) T cells, to home efficiently into tumor target tissue. Thus, defects intrinsic to the multi-step T-cell homing cascade have become an obvious, though significantly underappreciated contributor to immunotherapy resistance. Conspicuous have been low intralesional frequencies of tumor-infiltrating T-lymphocytes (TILs) below clinically beneficial threshold levels, and peripheral rather than deep lesional TIL infiltration. Therefore, a Teff cell 'homing deficit' may arguably represent a dominant factor responsible for ineffective immunotherapeutic outcomes, as tumors resistant to immune-targeted killing thrive in such permissive, immune-vacuous microenvironments. Fortunately, emerging data is shedding light into the diverse mechanisms of immune escape by which tumors restrict Teff cell trafficking and lesional penetrance. In this review, we scrutinize evolving knowledge on the molecular determinants of Teff cell navigation into tumors. By integrating recently described, though sporadic information of pivotal adhesive and chemokine homing signatures within the tumor microenvironment with better established paradigms of T-cell trafficking under homeostatic or infectious disease scenarios, we seek to refine currently incomplete models of Teff cell entry into tumor tissue. We further summarize how cancers thwart homing to escape immune-mediated destruction and raise awareness of the potential impact of immune checkpoint blockers on Teff cell homing. Finally, we speculate on innovative therapeutic opportunities for augmenting Teff cell homing capabilities to improve immunotherapy-based tumor eradication in cancer patients, with special focus on malignant melanoma.
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Affiliation(s)
- Robert Sackstein
- Department of Dermatology, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA,Department of Medicine, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA,Harvard Skin Disease Research Center, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA,Program of Excellence in Glycosciences, Harvard Medical School, 77 Avenue Louis Pasteur, Rm 671, Boston, MA 02115, USA
| | - Tobias Schatton
- Department of Dermatology, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA,Harvard Skin Disease Research Center, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA,Harvard Stem Cell Institute, Harvard Medical School, Boston, MA 02115, USA,Department of Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Steven R. Barthel
- Department of Dermatology, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA,Harvard Skin Disease Research Center, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA,Harvard Stem Cell Institute, Harvard Medical School, Boston, MA 02115, USA,Correspondence to: Dr. Steven R. Barthel, Harvard Institutes of Medicine, Rm. 673B, 77 Avenue Louis Pasteur, Boston, MA 02115;
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