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Translational insights and clinical challenges of targeting cancer stem cells
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DOI：10.1038/s41392-026-02887-y.png)
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Abstract
En 中文
Cancer stem cells (CSCs) are tumor cell subsets with self-renewal, multilineage differentiation, and tumor-initiating capacity that sustain cancer initiation, progression, metastasis, and relapse. Targeting CSCs therefore represents a promising route to improve the durability of cancer treatment. However, translation of this approach into routine care has been slow because of the biological complexity and clinical constraints. This review discusses current concepts of CSC origin and plasticity, the criteria used to define CSCs across different tumor types, and the marker systems as well as high-resolution technologies that are used to track CSC states. Developmental pathways, growth factor and cytokine cascades, as well as microenvironmental and stress responses that control CSC maintenance and therapy resistance are explored with a focus on their tractability as drug targets. We then discuss mechanisms through which CSCs escape chemotherapy, radiotherapy, and targeted agents. We review current efforts to use these pathways in designing small molecules, antibodies, cellular therapies, and vaccines aimed at CSC compartments. Heterogeneity within and between tumors, dynamic interconversion between CSC and non-CSC states, and support from specialized niches are considered as major barriers for clinical trial design, biomarker development, and response assessment. Emerging single-cell, spatial, and lineage tracing approaches, together with organoid and ex vivo platforms, are reviewed as tools that can bridge preclinical models and patient samples and guide the development of CSC-directed combination regimens. The goal is to outline translational principles that can guide future strategies for integrating CSC-focused interventions with established therapies to improve long-term disease control.
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