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Das K, Belnoue E, Rossi M, Hofer T, Danklmaier S, Nolden T, Schreiber LM, Angerer K, Kimpel J, Hoegler S, Spiesschaert B, Kenner L, von Laer D, Elbers K, Derouazi M, Wollmann G. A modular self-adjuvanting cancer vaccine combined with an oncolytic vaccine induces potent antitumor immunity. Nat Commun 2021; 12:5195. [PMID: 34465781 PMCID: PMC8408233 DOI: 10.1038/s41467-021-25506-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 08/05/2021] [Indexed: 12/13/2022] Open
Abstract
Functional tumor-specific cytotoxic T cells elicited by therapeutic cancer vaccination in combination with oncolytic viruses offer opportunities to address resistance to checkpoint blockade therapy. Two cancer vaccines, the self-adjuvanting protein vaccine KISIMA, and the recombinant oncolytic vesicular stomatitis virus pseudotyped with LCMV-GP expressing tumor-associated antigens, termed VSV-GP-TAA, both show promise as a single agent. Here we find that, when given in a heterologous prime-boost regimen with an optimized schedule and route of administration, combining KISIMA and VSV-GP-TAA vaccinations induces better cancer immunity than individually. Using several mouse tumor models with varying degrees of susceptibility for viral replication, we find that priming with KISIMA-TAA followed by VSV-GP-TAA boost causes profound changes in the tumor microenvironment, and induces a large pool of poly-functional and persistent antigen-specific cytotoxic T cells in the periphery. Combining this heterologous vaccination with checkpoint blockade further improves therapeutic efficacy with long-term survival in the spectrum. Overall, heterologous vaccination with KISIMA and VSV-GP-TAA could sensitize non-inflamed tumors to checkpoint blockade therapy. Successful cancer immune therapy correlates with a T cell-inflamed tumour microenvironment. Authors show here that co-administration of a self-adjuvanting protein vaccine and an antigen-expressing oncolytic virus in an optimised regimen strongly enhances T cell immunogenicity and may turn non-inflamed tumours proinflammatory and less resistant to checkpoint blockade therapy.
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Affiliation(s)
- Krishna Das
- Christian Doppler Laboratory for Viral Immunotherapy of Cancer, Medical University of Innsbruck, Innsbruck, Austria.,Institute of Virology, Medical University of Innsbruck, Innsbruck, Austria
| | - Elodie Belnoue
- AMAL Therapeutics, Geneva, Switzerland.,Boehringer Ingelheim International GmbH, Ingelheim, Germany
| | - Matteo Rossi
- AMAL Therapeutics, Geneva, Switzerland.,Boehringer Ingelheim International GmbH, Ingelheim, Germany
| | - Tamara Hofer
- Christian Doppler Laboratory for Viral Immunotherapy of Cancer, Medical University of Innsbruck, Innsbruck, Austria.,Institute of Virology, Medical University of Innsbruck, Innsbruck, Austria
| | - Sarah Danklmaier
- Christian Doppler Laboratory for Viral Immunotherapy of Cancer, Medical University of Innsbruck, Innsbruck, Austria.,Institute of Virology, Medical University of Innsbruck, Innsbruck, Austria
| | - Tobias Nolden
- Boehringer Ingelheim International GmbH, Ingelheim, Germany.,ViraTherapeutics GmbH, Innsbruck, Austria
| | - Liesa-Marie Schreiber
- Christian Doppler Laboratory for Viral Immunotherapy of Cancer, Medical University of Innsbruck, Innsbruck, Austria.,Institute of Virology, Medical University of Innsbruck, Innsbruck, Austria
| | - Katharina Angerer
- Christian Doppler Laboratory for Viral Immunotherapy of Cancer, Medical University of Innsbruck, Innsbruck, Austria.,Institute of Virology, Medical University of Innsbruck, Innsbruck, Austria
| | - Janine Kimpel
- Institute of Virology, Medical University of Innsbruck, Innsbruck, Austria
| | - Sandra Hoegler
- Unit of Laboratory Animal Pathology, Institute of Pathology, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Bart Spiesschaert
- Boehringer Ingelheim International GmbH, Ingelheim, Germany.,ViraTherapeutics GmbH, Innsbruck, Austria
| | - Lukas Kenner
- Unit of Laboratory Animal Pathology, Institute of Pathology, University of Veterinary Medicine Vienna, Vienna, Austria.,Department of Experimental Pathology, Medical University of Vienna, Vienna, Austria
| | - Dorothee von Laer
- Institute of Virology, Medical University of Innsbruck, Innsbruck, Austria
| | - Knut Elbers
- Boehringer Ingelheim International GmbH, Ingelheim, Germany.,ViraTherapeutics GmbH, Innsbruck, Austria
| | - Madiha Derouazi
- AMAL Therapeutics, Geneva, Switzerland. .,Boehringer Ingelheim International GmbH, Ingelheim, Germany.
| | - Guido Wollmann
- Christian Doppler Laboratory for Viral Immunotherapy of Cancer, Medical University of Innsbruck, Innsbruck, Austria. .,Institute of Virology, Medical University of Innsbruck, Innsbruck, Austria.
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Incorporation of host complement regulatory proteins into Newcastle disease virus enhances complement evasion. J Virol 2012; 86:12708-16. [PMID: 22973037 DOI: 10.1128/jvi.00886-12] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Newcastle disease virus (NDV), an avian paramyxovirus, is inherently tumor selective and is currently being considered as a clinical oncolytic virus and vaccine vector. In this study, we analyzed the effect of complement on the neutralization of NDV purified from embryonated chicken eggs, a common source for virus production. Fresh normal human serum (NHS) neutralized NDV by multiple pathways of complement activation, independent of neutralizing antibodies. Neutralization was associated with C3 deposition and the activation of C2, C3, C4, and C5 components. Interestingly, NDV grown in mammalian cell lines was resistant to complement neutralization by NHS. To confirm whether the incorporation of regulators of complement activity (RCA) into the viral envelope afforded complement resistance, we grew NDV in CHO cells stably transfected with CD46 or HeLa cells, which strongly express CD46 and CD55. NDV grown in RCA-expressing cells was resistant to complement by incorporating CD46 and CD55 on virions. Mammalian CD46 and CD55 molecules on virions exhibited homologous restriction, since chicken sera devoid of neutralizing antibodies to NDV were able to effectively neutralize these virions. The incorporation of chicken RCA into NDV produced in embryonated eggs similarly provided species specificity toward chicken sera.
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Hiss DC, Fielding BC. Optimization and preclinical design of genetically engineered viruses for human oncolytic therapy. Expert Opin Biol Ther 2012; 12:1427-47. [PMID: 22788715 DOI: 10.1517/14712598.2012.707183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Oncolytic viruses (OVs) occupy a strategic niche in the dynamic era of biological and gene therapy of human cancers. However, the use of OVs is the subject of close scrutiny due to impediments such as the insufficiency of patient generalizations posed by heterogeneous tumor responses to treatment, inherent or potentially lethal viral pathogenicities, unanticipated host- or immune-related adverse effects, and the emergence of virus-resistant cancer cells. These challenges can be overcome by the design and development of more definitive (optimized, targeted, and individualized) cancer virotherapeutics. AREAS COVERED The translation of current knowledge and recent innovations into rational treatment prospects hinges on an iterative loop of variables pertaining to genetically engineered viral oncolytic efficacy and safety profiles, mechanism-of-action data, potencies of synergistic oncolytic viral combinations with conventional tumor, immuno-, chemo-, and radiation treatment modalities, optimization of the probabilities of treatment successes in heterogeneous (virus-sensitive and -resistant) tumor cell populations by mathematical modeling, and lessons learned from preclinical studies and human clinical trials. EXPERT OPINION In recent years, it has become increasingly clear that proof-of-principle is critical for the preclinical optimization of oncolytic viruses to target heterogeneous forms of cancer and to prioritize current concerns related to the efficacy and safety of oncolytic virotherapy.
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Affiliation(s)
- Donavon C Hiss
- University of the Western Cape, Department of Medical Biosciences, Molecular Oncology Research Laboratory, Bellville, 7535, South Africa.
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