In vivo dendritic cell reprogramming for cancer immunotherapy

Author:

Ascic Ervin12ORCID,Åkerström Fritiof3ORCID,Sreekumar Nair Malavika12ORCID,Rosa André3ORCID,Kurochkin Ilia12ORCID,Zimmermannova Olga12ORCID,Catena Xavier123ORCID,Rotankova Nadezhda4,Veser Charlotte4ORCID,Rudnik Michal4ORCID,Ballocci Tommaso12ORCID,Schärer Tiffany3ORCID,Huang Xiaoli3ORCID,de Rosa Torres Maria12ORCID,Renaud Emilie3ORCID,Velasco Santiago Marta5ORCID,Met Özcan56ORCID,Askmyr David78ORCID,Lindstedt Malin9ORCID,Greiff Lennart78ORCID,Ligeon Laure-Anne4,Agarkova Irina4ORCID,Svane Inge Marie5ORCID,Pires Cristiana F.3ORCID,Rosa Fábio F.3ORCID,Pereira Carlos-Filipe12310ORCID

Affiliation:

1. Molecular Medicine and Gene Therapy, Lund Stem Cell Centre, Lund University, 221 84 Lund, Sweden.

2. Wallenberg Center for Molecular Medicine at Lund University, 221 84 Lund, Sweden.

3. Asgard Therapeutics AB, Medicon Village, 223 81 Lund, Sweden.

4. InSphero AG, 8952 Schlieren, Switzerland.

5. National Center of Cancer Immune Therapy (CCIT-DK), Department of Oncology, Copenhagen University Hospital, 2730 Herlev, Denmark.

6. Department of Health Technology, Technical University of Denmark, 2800 Kongens Lyngby, Denmark.

7. Department of ORL, Head & Neck Surgery, Skåne University Hospital, 221 85 Lund, Sweden.

8. Department of Clinical Sciences, Lund University, 221 84 Lund, Sweden.

9. Department of Immunotechnology, Lund University, Medicon Village, 223 81 Lund, Sweden.

10. Centre for Neuroscience and Cell Biology, University of Coimbra, Largo Marquês do Pombal, 3004-517 Coimbra, Portugal.

Abstract

Immunotherapy can lead to long-term survival for some cancer patients, yet generalized success has been hampered by insufficient antigen presentation and exclusion of immunogenic cells from the tumor microenvironment. Here, we developed an approach to reprogram tumor cells in vivo by adenoviral delivery of the transcription factors PU.1, IRF8, and BATF3, which enabled them to present antigens as type 1 conventional dendritic cells. Reprogrammed tumor cells remodeled their tumor microenvironment, recruited, and expanded polyclonal cytotoxic T cells, induced tumor regressions, and established long-term systemic immunity in multiple mouse melanoma models. In human tumor spheroids and xenografts, reprogramming to immunogenic dendritic-like cells progressed independently of immunosuppression, which usually limits immunotherapy. Our study paves the way for human clinical trials of in vivo immune cell reprogramming for cancer immunotherapy.

Publisher

American Association for the Advancement of Science (AAAS)

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