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ERK is a Pivotal Player of Chemo-Immune-Resistance in Cancer
Iris C Salaroglio1, Eleonora Mungo2, Elena Gazzano3
1Department of Oncology, University of Torino, via Santena 5/bis, 10126 Torino, Italy. irischiara.salaroglio@unito.it.
Abstract:
The extracellular signal-related kinases (ERKs) act as pleiotropic molecules in tumors, where they activate pro-survival pathways leading to cell proliferation and migration, as well as modulate apoptosis, differentiation, and senescence. Given its central role as sensor of extracellular signals, ERK transduction system is widely exploited by cancer cells subjected to environmental stresses, such as chemotherapy and anti-tumor activity of the host immune system. Aggressive tumors have a tremendous ability to adapt and survive in stressing and unfavorable conditions. The simultaneous resistance to chemotherapy and immune system responses is common, and ERK signaling plays a key role in both types of resistance. In this review, we dissect the main ERK-dependent mechanisms and feedback circuitries that simultaneously determine chemoresistance and immune-resistance/immune-escape in cancer cells. We discuss the pros and cons of targeting ERK signaling to induce chemo-immune-sensitization in refractory tumors.
Insights
Extracellular signal-related kinases (ERK) signaling promotes cancer cell survival and resistance to chemotherapy and immune attack. Targeting ERK pathways may sensitize tumors to combined chemo-immunotherapy, overcoming treatment resistance.
Area of Science:
- Oncology
- Molecular Biology
- Immunology
Background:
- Extracellular signal-related kinases (ERKs) are crucial signaling molecules in cancer, regulating cell proliferation, migration, and survival.
- Cancer cells exploit ERK signaling to resist environmental stresses like chemotherapy and immune surveillance.
- Simultaneous resistance to chemotherapy and immune responses is a hallmark of aggressive tumors, with ERK signaling playing a central role.
Purpose of the Study:
- To review the ERK-dependent mechanisms driving chemoresistance and immune escape in cancer.
- To analyze feedback circuits that contribute to simultaneous resistance.
- To discuss the potential of targeting ERK signaling for chemo-immune sensitization in refractory tumors.
Main Methods:
- Literature review of studies on ERK signaling in cancer.
- Analysis of molecular mechanisms underlying chemoresistance and immune evasion.
- Discussion of therapeutic strategies targeting ERK pathways.
Main Results:
- ERK signaling pathways are key mediators of cancer cell adaptation and survival under stress.
- ERK-dependent mechanisms contribute to both chemotherapy resistance and immune evasion.
- Targeting ERK signaling presents a potential strategy to overcome dual resistance.
Conclusions:
- ERK signaling is a critical node for simultaneous chemoresistance and immune escape in aggressive cancers.
- Targeting ERK pathways offers a promising therapeutic avenue for sensitizing refractory tumors to combined therapies.
- Further research is needed to fully elucidate the therapeutic benefits and challenges of targeting ERK signaling.
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