Targeting the Tumor Microenvironment: An Unexplored Strategy for Mutant KRAS Tumors
Patrícia Dias Carvalho1,2,3, Ana Luísa Machado1,4,5, Flávia Martins1,2,6
1i3S - Instituto de Investigação e Inovação em Saúde, Epithelial Interactions in Cancer group, Rua Alfredo Allen, 4200-135 Porto, Portugal.
Abstract:
Current evidence strongly suggests that cancer cells depend on the microenvironment in order to thrive. In fact, signals from the surrounding tumor microenvironment are crucial for cancer cells´ aggressiveness, altering their expression profile and favoring their metastatic potential. As such, targeting the tumor microenvironment to impair cancer progression became an attractive therapeutic option. Interestingly, it has been shown that oncogenic KRAS signaling promotes a pro-tumorigenic microenvironment, and the associated crosstalk alters the expression profile of cancer cells. These findings award KRAS a key role in controlling the interactions between cancer cells and the microenvironment, granting cancer a poor prognosis. Given the lack of effective approaches to target KRAS itself or its downstream effectors in the clinic, exploring such interactions may open new perspectives on possible therapeutic strategies to hinder mutant KRAS tumors. This review highlights those communications and their implications for the development of effective therapies or to provide insights regarding response to existing regimens.
Insights
Cancer cells rely on their microenvironment for growth and metastasis. Targeting this tumor microenvironment, especially in KRAS-mutant cancers, offers new therapeutic strategies.
Area of Science:
- Oncology
- Cancer Biology
- Tumor Microenvironment
Background:
- Cancer cells are critically dependent on their surrounding microenvironment for survival and progression.
- Signals from the tumor microenvironment influence cancer cell aggressiveness and metastatic potential.
- Targeting the tumor microenvironment is a promising therapeutic strategy to inhibit cancer progression.
Purpose of the Study:
- To review the communication between cancer cells and the tumor microenvironment.
- To highlight the role of oncogenic KRAS signaling in promoting a pro-tumorigenic microenvironment.
- To explore therapeutic strategies targeting KRAS-driven tumor-microenvironment interactions.
Main Methods:
- Literature review of current evidence on cancer cell-microenvironment interactions.
- Analysis of the role of KRAS signaling in shaping the tumor microenvironment.
- Discussion of therapeutic implications for mutant KRAS tumors.
Main Results:
- The tumor microenvironment significantly impacts cancer cell behavior, including aggressiveness and metastasis.
- Oncogenic KRAS signaling actively promotes a pro-tumorigenic microenvironment.
- KRAS plays a central role in mediating cancer cell-microenvironment crosstalk, often leading to poor prognosis.
Conclusions:
- Understanding cancer cell-microenvironment interactions is crucial for developing effective cancer therapies.
- Targeting the crosstalk influenced by KRAS offers novel therapeutic avenues for mutant KRAS tumors.
- This review provides insights into potential therapies and response prediction for existing treatments.
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