Hypoxia-driven mobilization of altruistic cancer stem cells in platinum-treated head and neck cancer.

ABSTRACT:

Background

Head and neck cancers harbor dormant cancer stem cells (CSCs). This study explores how platinum therapy impacts these cells in a non-genetic manner and the role of hypoxia in this process. Previously, we identified a novel population of CSCs exhibiting an "altruistic" phenotype, sacrificing self-renewal to promote niche defense (tumor stemness defense, TSD), potentially protecting a dormant subpopulation of CSCs, the reawakening CSC (R-CSC) retaining stress memory. This TSD phenotype involves the activation of the MYC-HIF2α pathway and, importantly, is linked to a hypoxic tumor microenvironment. We termed these TSD+ CSCs "altruistic cancer stem cells" (A-CSCs). Here we investigated the potential role of tumor hypoxia in the mobilization of TSD+ CSCs to the circulation as

SUBMITTER: Pathak L 

PROVIDER: S-EPMC11830676 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature