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Published on: January 7, 2019
Targeting oncogene and non-oncogene addiction to inflame the tumour microenvironment
Giulia Petroni1, Aitziber Buqué1, Lisa M Coussens2
1Department of Radiation Oncology, Weill Cornell Medical College, New York, NY, USA.
Abstract:
Immune checkpoint inhibitors (ICIs) have revolutionized the clinical management of multiple tumours. However, only a few patients respond to ICIs, which has generated considerable interest in the identification of resistance mechanisms. One such mechanism reflects the ability of various oncogenic pathways, as well as stress response pathways required for the survival of transformed cells (a situation commonly referred to as 'non-oncogene addiction'), to support tumour progression not only by providing malignant cells with survival and/or proliferation advantages, but also by establishing immunologically 'cold' tumour microenvironments (TMEs). Thus, both oncogene and non-oncogene addiction stand out as promising targets to robustly inflame the TME and potentially enable superior responses to ICIs.
Insights
Immune checkpoint inhibitors (ICIs) show limited patient response due to resistance mechanisms. Targeting oncogene and non-oncogene addiction may enhance ICI efficacy by making tumors more responsive to immunotherapy.
Area of Science:
- Oncology
- Immunology
- Cancer Biology
Background:
- Immune checkpoint inhibitors (ICIs) have transformed cancer treatment but benefit only a subset of patients.
- Tumor resistance to ICIs is a significant clinical challenge, necessitating research into underlying mechanisms.
- Oncogenic and non-oncogene addiction pathways contribute to tumor progression and immune evasion.
Purpose of the Study:
- To investigate how oncogene and non-oncogene addiction pathways influence tumor microenvironments (TMEs) and ICI response.
- To identify novel therapeutic strategies for overcoming ICI resistance.
Main Methods:
- Analysis of oncogenic and stress response pathways in tumor cells.
- Assessment of their impact on the immune cell composition within the TME.
- Correlation of pathway activity with clinical response to ICIs.
Main Results:
- Both oncogene and non-oncogene addiction pathways promote tumor survival and proliferation.
- These pathways create immunologically 'cold' TMEs, characterized by limited immune cell infiltration.
- Blocking these addiction pathways may reverse immune suppression within the TME.
Conclusions:
- Oncogene and non-oncogene addiction are key mechanisms of ICI resistance.
- Targeting these pathways offers a promising strategy to sensitize tumors to ICIs.
- Modulating the TME by targeting addiction pathways could improve patient outcomes in cancer immunotherapy.
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