Cancer Cells and Metastasis

Metastasis — the spread of cancer cells from a primary tumor to distant organs — accounts for the vast majority of cancer-related deaths, yet the biological mechanisms that make certain cells capable of initiating that spread remain incompletely understood. A leading focus of current research is a subpopulation called cancer stem cells, which appear to drive tumor growth, survive conventional therapies, and seed new tumors at remote sites through a process of cellular reprogramming known as epithelial-mesenchymal transition. The surrounding tumor microenvironment, rather than acting as a passive backdrop, actively regulates whether these cells remain dormant or colonize new tissue — a dynamic that helps explain why some metastases emerge years after initial treatment. Researchers are now working to clarify how stem cell niches sustain drug resistance and to develop organoid models that more faithfully replicate the conditions under which metastatic colonization occurs.

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Keywords

Cancer Stem CellsTumor MetastasisEpithelial-Mesenchymal TransitionStem Cell NichesTumorigenic CellsMetastatic Colonization