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Senescence and Immunoregulation in the Tumor Microenvironment.
Megan K Ruhland1, Elise Alspach2
1Department of Cell, Developmental and Cancer Biology, Knight Cancer Institute, Oregon Health and Science University, Portland, OR, United States.
Frontiers in Cell and Developmental Biology
|October 25, 2021
Summary
Senescent cells in the tumor microenvironment (TME) promote inflammation and hinder immunotherapy effectiveness. Targeting senescent stroma may improve cancer treatment outcomes.
Area of Science:
- Oncology
- Immunology
- Cell Biology
Background:
- Cancer immunotherapies have improved patient outcomes, but response rates vary.
- The tumor microenvironment (TME) significantly influences immunotherapy efficacy.
- Senescent cells within the TME contribute to chronic inflammation and tumor progression.
Purpose of the Study:
- To review recent advancements in senescence biology.
- To discuss the immunoregulatory roles of senescent stroma in cancer.
- To highlight the importance of understanding TME heterogeneity for improving immunotherapy.
Main Methods:
- Literature review of senescence biology.
- Analysis of senescent stroma's role in immune regulation within the TME.
- Discussion of TME cell types and their impact on immunotherapy.
Main Results:
- Senescent stroma expresses a senescence-associated secretory phenotype, driving inflammation.
- Senescent environments promote protumorigenic immune cell functions.
- Understanding senescent stroma is crucial for predicting immunotherapy response.
Conclusions:
- Senescent stroma is a key component of the TME that negatively impacts immunotherapy.
- Targeting senescent cells and their associated pathways presents a potential therapeutic strategy.
- Combinatorial approaches involving senolytics may enhance immunotherapy efficacy in cancer patients.
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