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Roles of Myeloid-Derived Suppressor Cells in Cancer Metastasis: Immunosuppression and Beyond
Amin Pastaki Khoshbin1,2, Mahsa Eskian1,3,4, Mahsa Keshavarz-Fathi1,2,3,5
1Cancer Immunology Project (CIP), Universal Scientific Education and Research Network (USERN), Tehran, Iran.
Abstract:
Metastasis is the direst face of cancer, and it is not a feature solely dependent on cancer cells; however, a complex interaction between cancer cells and host causes this process. Investigating the mechanisms of metastasis can lead to its control. Myeloid-derived suppressor cells (MDSCs) are key components of tumor microenvironment that favor cancer progression. These cells result from altered myelopoiesis in response to the presence of tumor. The most recognized function of MDSCs is suppressing anti-tumor immune responses. Strikingly, these cells are among important players in cancer dissemination and metastasis. They can exert their effect on metastatic process by affecting anti-cancer immunity, epithelial-mesenchymal transition, cancer stem cell formation, angiogenesis, establishing premetastatic niche, and supporting cancer cell survival and growth in metastatic sites. In this article, we review and discuss the mechanisms by which MDSCs contribute to cancer metastasis.
Insights
Myeloid-derived suppressor cells (MDSCs) are crucial in cancer metastasis by interacting with the tumor microenvironment. Understanding how these cells promote cancer spread is key to developing new treatments.
Area of Science:
- Oncology
- Immunology
- Cancer Biology
Background:
- Metastasis is a complex process driven by cancer cells and host interactions.
- Myeloid-derived suppressor cells (MDSCs) are key regulators within the tumor microenvironment.
- MDSCs are implicated in promoting cancer progression and immune suppression.
Purpose of the Study:
- To review and discuss the multifaceted mechanisms by which MDSCs contribute to cancer metastasis.
- To highlight the role of MDSCs in facilitating cancer dissemination.
Main Methods:
- Literature review and synthesis of existing research on MDSCs and metastasis.
- Analysis of the molecular and cellular interactions involving MDSCs in the metastatic cascade.
Main Results:
- MDSCs suppress anti-tumor immunity, a primary function.
- MDSCs actively promote metastasis through various mechanisms including.
- These mechanisms include influencing epithelial-mesenchymal transition, cancer stem cell formation, angiogenesis, premetastatic niche establishment, and supporting cancer cell survival at metastatic sites.
Conclusions:
- MDSCs are critical mediators of cancer metastasis.
- Targeting MDSCs presents a potential therapeutic strategy to control cancer spread.
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