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Updated: Nov 20, 2025

Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
Published on: January 7, 2019
[Antitumoral microorganisms: The Swiss army knife of immunotherapy]
Loïs Coënon1, Arthur Battistoni1, Agathe Poupée-Beaugé1
1Équipe BioMAP, Université de Tours, INRAe, 31 avenue Monge, 37200 Tours, France.
Abstract:
Research on viruses, bacteria and protozoa-based immunotherapy has been on the rise for several years. The antitumoral efficacy of these microorganisms relies on three main mechanisms: Destruction of tumor cells, stimulation of the immune response and reprogramming of the tumor microenvironment. In order to optimize their immunotherapeutic action, these microorganisms can be genetically engineered to enhance their tumor-targeting efficacy or to vectorize immunostimulating molecules and/or antibodies. To this aim, molecular engineering allows the design of new antibody formats optimizing their functions. From whole antibodies to tandem single-chain variable fragments, various antibody formats can be vectorized by microorganisms to target receptors such as immune checkpoints or recruit immune effector cells within the tumor. Such possibilities broaden the arsenal of immunotherapeutic cancer treatment. This review focuses on these innovations and their advantages for immunotherapy.
Insights
Microorganisms like viruses, bacteria, and protozoa are emerging as powerful tools in cancer immunotherapy. Genetic engineering enhances their ability to destroy tumors and stimulate immune responses, offering new treatment avenues.
Area of Science:
- Microbial immunotherapy
- Cancer immunology
- Molecular engineering
Background:
- Microorganisms (viruses, bacteria, protozoa) show promise in cancer immunotherapy.
- Their antitumoral effects stem from direct tumor cell destruction, immune stimulation, and tumor microenvironment modulation.
- Genetic engineering can enhance these microbial therapeutic properties.
Purpose of the Study:
- To review innovations in microbial immunotherapy.
- To highlight the advantages of genetically engineered microorganisms and novel antibody formats in cancer treatment.
- To explore the vectorization of antibodies by microorganisms for targeted cancer therapy.
Main Methods:
- Review of current research on microbial immunotherapy.
- Analysis of genetic engineering strategies for microorganisms.
- Examination of antibody engineering for enhanced immunotherapeutic functions.
- Discussion of microorganism-mediated antibody delivery systems.
Main Results:
- Genetically engineered microbes offer enhanced tumor targeting and payload delivery.
- Novel antibody formats (e.g., single-chain variable fragments) can be vectorized by microbes.
- Microbial delivery of antibodies can target immune checkpoints and recruit immune cells.
- These advancements expand the scope of immunotherapeutic cancer treatments.
Conclusions:
- Microbial immunotherapy, enhanced by genetic engineering and antibody technology, represents a significant advancement in cancer treatment.
- The strategic combination of engineered microbes and tailored antibody formats provides novel therapeutic strategies.
- Further research in this interdisciplinary field promises to broaden the arsenal of effective cancer immunotherapies.
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