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Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
Published on: January 7, 2019
Directing systemic oncolytic viral delivery to tumors via carrier cells
Hiroshi Nakashima1, Balveen Kaur, E A Chiocca
1Dardinger Laboratory for Neuro-oncology and Neurosciences, Department of Neurological Surgery, James Comprehensive Cancer Center, Columbus, OH 43210, United States.
Abstract:
The systemic administration of oncolytic virus (OV) is often inefficient due to clearance of the virus by host defense mechanism and spurious targeting of non-cancer tissues through the bloodstream. Cell mediated OV delivery could hide the virus from host defenses and direct them toward tumors: Mesenchymal and neural stem cells have been described to possess tumor-homing ability as well as the capacity to deliver OVs. In this review, we will focus on approaches where OV and carrier cells are utilized for cancer therapy. Effective cellular internalization and replication of OVs need to occur both in cancer and carrier cells. We thus will discuss the current challenges faced by the use of OV delivery via carrier cells.
Insights
Cell-mediated delivery of oncolytic viruses (OVs) using stem cells offers a promising cancer therapy approach. This method enhances viral targeting and shields them from immune clearance, though challenges remain in carrier cell integration and OV replication.
Area of Science:
- Oncology
- Virology
- Cell Biology
Background:
- Systemic oncolytic virus (OV) administration faces challenges including immune clearance and off-target delivery.
- Cell-mediated delivery using tumor-homing stem cells presents an alternative strategy for OV therapy.
- Mesenchymal and neural stem cells are investigated as potential carriers for OVs due to their tumor-homing properties.
Purpose of the Study:
- To review current approaches utilizing carrier cells for oncolytic virus delivery in cancer therapy.
- To explore the potential of mesenchymal and neural stem cells in enhancing OV efficacy.
- To identify and discuss the challenges associated with cell-mediated OV delivery systems.
Main Methods:
- Review of existing literature on cell-mediated oncolytic virus delivery.
- Analysis of studies investigating stem cell homing and OV payload capacity.
- Discussion of the requirements for effective OV internalization and replication in both carrier and cancer cells.
Main Results:
- Cell-mediated delivery can protect OVs from host immune responses.
- Carrier cells can direct OVs towards tumor sites, improving targeting efficiency.
- Successful OV therapy requires efficient viral internalization and replication within both carrier and target cancer cells.
Conclusions:
- Cell-mediated OV delivery holds significant therapeutic potential for cancer treatment.
- Overcoming challenges in cellular internalization, replication, and carrier cell integration is crucial for clinical success.
- Further research is needed to optimize stem cell-based OV delivery systems for enhanced cancer therapy.
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