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Updated: Aug 15, 2025

Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells
Published on: March 7, 2025
Cancer stem cell-immune cell collusion in immunotherapy
Yuan-Yuan Wang1, Wen-Da Wang1, Zhi-Jun Sun1,2
1The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine, Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, People's Republic of China.
Immune checkpoint blockade (ICB) shows promise in cancer treatment but faces challenges from immunosuppressive tumor microenvironments. This review explores how cancer stem cells (CSCs) interact with immune cells to drive ICB resistance, suggesting targeted drug strategies.
Area of Science:
- Oncology
- Immunology
- Cancer Research
Background:
- Immunotherapy, specifically immune checkpoint blockade (ICB), has revolutionized cancer treatment by enhancing the immune system's ability to fight tumors.
- However, the efficacy of ICB is often limited by an immunosuppressive tumor microenvironment (TME) and insufficient immune response activation.
- Cancer stem cells (CSCs) are increasingly recognized for their role in treatment resistance and tumor recurrence, yet their interaction with the immune system in the context of ICB remains underexplored.
Purpose of the Study:
- This review aims to elucidate the intricate crosstalk between cancer stem cells (CSCs) and tumor-infiltrating immune cells.
- It focuses on summarizing the signaling pathways involved in CSC-immune cell interactions that contribute to resistance against immune checkpoint blockade (ICB).
- Furthermore, the review highlights potential therapeutic strategies involving targeted drugs to enhance ICB response by modulating these interactions.
Main Methods:
- Literature review and synthesis of existing research on cancer stem cells, tumor microenvironment, and immune checkpoint blockade.
- Analysis of signaling pathways mediating crosstalk between CSCs and tumor-infiltrating immune cells.
- Identification and discussion of targeted drug applications for improving ICB efficacy.
Main Results:
- CSCs actively shape the TME, promoting immune suppression and contributing to ICB resistance through complex signaling crosstalk with various immune cells.
- Specific pathways of CSC-immune cell interaction have been identified as key drivers of therapeutic failure.
- Targeting these specific CSC-immune cell interactions presents a promising avenue for overcoming ICB resistance.
Conclusions:
- Understanding the collusive relationship between CSCs and immune cells is crucial for overcoming ICB resistance.
- Targeted therapeutic interventions aimed at disrupting CSC-immune cell crosstalk can potentially restore sensitivity to ICB.
- Further research into these interactions may lead to novel combination therapies for improved cancer treatment outcomes.
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