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Updated: Jul 3, 2026
12:42
Paramyxoviruses for Tumor-targeted Immunomodulation: Design and Evaluation Ex Vivo
Published on: January 7, 2019
Targeted therapies to improve tumor immunotherapy
Jonathan Begley1, Antoni Ribas
1Monash University, Victoria, Melbourne, Australia.
Summary
Immunotherapy for solid cancers shows low response rates. Targeting the tumor microenvironment with new drugs may overcome resistance and improve cancer treatment outcomes.
Area of Science:
- Oncology
- Immunology
- Pharmacology
Background:
- Cellular immunotherapy offers durable tumor regression in select cancers like melanoma.
- Current immunotherapies yield limited response rates (5-10%) in metastatic solid cancers.
- Tumor resistance to immunotherapy is a significant clinical challenge.
Purpose of the Study:
- To propose that local tumor factors limit T cell activity.
- To suggest pharmacologic modulation of the tumor milieu to overcome resistance.
- To introduce the concept of "immunosensitization" for cancer treatment.
Main Methods:
- Investigating mechanisms of cancer cell immune escape.
- Designing rational combinatorial therapies targeting immunosuppressive molecules.
- Identifying drugs that promote cancer cell apoptosis without harming lymphocytes.
Main Results:
- Antitumor T cell activity is hypothesized to be restricted by the tumor microenvironment.
- Pharmacologic modulation of the tumor milieu may enhance immunotherapy efficacy.
- Targeting oncogenic pathways can create a proapoptotic cancer cell environment.
Conclusions:
- Understanding immune escape mechanisms is crucial for developing effective cancer therapies.
- Combinatorial approaches targeting immunosuppressive and antiapoptotic factors can reverse resistance.
- Immunosensitization strategies aim to enhance the immune system's control over cancer.
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