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Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
Published on: January 7, 2019
Potential of tumour cells for delivering oncolytic viruses
1Infection and Cancer Program, Abt. F010 and INSERM U701, German Cancer Research Centre, Heidelberg, Germany. z.raykov@dkfz.de
Abstract:
Autologous or allogenic tumour cells have long been used in the fight against cancer as vaccines to awaken the patient's immune system. On the other hand, oncolytic viruses have emerged in recent years as powerful therapeutic tools for selectively killing tumour cells. Yet despite recent improvements in virus production, administration and targeting, the latter strategy remains limited by poor access of oncolytic viruses to primary and metastatic tumour cells. The present review focuses on how to overcome these limitations on oncolytic virus delivery, at least in part, through the use of tumour-derived or in vitro transformed carrier cells. On the basis of existing evidence, novel strategies are proposed for using such cell vehicles, alone or in combination, both as virus factories and as anticancer vaccines.
Insights
This review explores using tumor-derived carrier cells to improve oncolytic virus delivery for cancer treatment. These cell vehicles can act as virus factories and anticancer vaccines, enhancing therapeutic efficacy.
Area of Science:
- Oncology
- Immunotherapy
- Virology
Background:
- Tumor cells have been historically used as vaccines to stimulate the immune system against cancer.
- Oncolytic viruses are emerging as potent cancer therapeutics due to their ability to selectively destroy tumor cells.
- Current limitations in oncolytic virotherapy include poor delivery of viruses to primary and metastatic tumor sites.
Purpose of the Study:
- To review strategies for overcoming oncolytic virus delivery limitations.
- To propose novel methods for utilizing tumor-derived or transformed cells as delivery vehicles for oncolytic viruses.
- To explore the dual role of these cell vehicles as virus factories and anticancer vaccines.
Main Methods:
- Review of existing scientific literature on oncolytic virus delivery and cancer vaccines.
- Analysis of strategies employing carrier cells for therapeutic delivery.
- Proposal of novel therapeutic approaches based on current evidence.
Main Results:
- Carrier cells, including tumor-derived and in vitro transformed cells, show potential for improving oncolytic virus delivery.
- These cell vehicles can be engineered to act as localized "virus factories," enhancing viral spread within tumors.
- The proposed strategies suggest a synergistic approach combining oncolytic virotherapy with cellular immunotherapy.
Conclusions:
- Utilizing tumor-derived or transformed carrier cells offers a promising strategy to enhance oncolytic virus delivery and efficacy.
- Cell vehicles can serve a dual purpose, acting as both delivery systems for oncolytic viruses and as components of an anticancer vaccine.
- Further research into these cell-based delivery systems could significantly advance oncolytic virotherapy for cancer treatment.
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