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Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
Published on: January 7, 2019
Going viral: a review of replication-selective oncolytic adenoviruses
Christopher Larson1, Bryan Oronsky2, Jan Scicinski2
1University of California at San Diego (UCSD), Moores Cancer Center, La Jolla, CA, USA.
Abstract:
Oncolytic viruses have had a tumultuous course, from the initial anecdotal reports of patients having antineoplastic effects after natural viral infections a century ago to the development of current cutting-edge therapies in clinical trials. Adenoviruses have long been the workhorse of virotherapy, and we review both the scientific and the not-so-scientific forces that have shaped the development of these therapeutics from wild-type viral pathogens, turning an old foe into a new friend. After a brief review of the mechanics of viral replication and how it has been modified to engineer tumor selectivity, we give particular attention to ONYX-015, the forerunner of virotherapy with extensive clinical testing that pioneered the field. The findings from those as well as other oncolytic trials have shaped how we now view these viruses, which our immune system has evolved to vigorously attack, as promising immunotherapy agents.
Insights
Oncolytic viruses, particularly adenoviruses, are evolving from natural pathogens into targeted cancer therapies. Early research, including ONYX-015, paved the way for using these viruses as immunotherapy agents against tumors.
Area of Science:
- Oncology
- Virology
- Immunotherapy
Background:
- Oncolytic viruses have a century-long history, evolving from anecdotal observations to advanced clinical trials.
- Adenoviruses are key players in virotherapy, with significant research focused on modifying them as anti-cancer agents.
- The development of oncolytic virotherapy involves transforming natural viral pathogens into targeted therapeutics.
Purpose of the Study:
- To review the historical development and scientific forces shaping oncolytic virotherapy.
- To highlight the role of adenoviruses, specifically ONYX-015, in pioneering this field.
- To discuss the potential of oncolytic viruses as immunotherapy agents, considering their interaction with the immune system.
Main Methods:
- Review of historical scientific literature and clinical trial data.
- Examination of viral replication mechanisms and genetic engineering for tumor selectivity.
- Analysis of the impact of early oncolytic virus trials on current therapeutic strategies.
Main Results:
- Adenoviruses have been extensively studied and engineered for oncolytic virotherapy.
- ONYX-015, an early adenovirus-based therapy, demonstrated significant potential and guided further research.
- Clinical trial findings have reshaped the perception of oncolytic viruses as viable immunotherapy agents.
Conclusions:
- Oncolytic virotherapy, particularly using adenoviruses, represents a significant advancement in cancer treatment.
- The evolution of these viruses from pathogens to therapeutic tools underscores scientific innovation.
- Oncolytic viruses show promise as immunotherapeutic agents, capable of engaging the host immune system against cancer.
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