Abstract
Colorectal cancer stem cells (CSCs) express Lgr5 and display extensive stem cell-like multipotency and self-renewal and are thought to seed metastatic disease. Here, we used a mouse model of colorectal cancer (CRC) and human tumor xenografts to investigate the cell of origin of metastases. We found that most disseminated CRC cells in circulation were Lgr5− and formed distant metastases in which Lgr5+ CSCs appeared. This plasticity occurred independently of stemness-inducing microenvironmental factors and was indispensable for outgrowth, but not establishment, of metastases. Together, these findings show that most colorectal cancer metastases are seeded by Lgr5− cells, which display intrinsic capacity to become CSCs in a niche-independent manner and can restore epithelial hierarchies in metastatic tumors.
Original language | English |
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Pages (from-to) | 569-578.e7 |
Journal | Cell Stem Cell |
Volume | 26 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2 Apr 2020 |
Externally published | Yes |
Keywords
- cancer stem cells
- circulating tumor cells
- colorectal cancer
- intravital microscopy
- Lgr5
- metastasis
- microenvironment
- plasticity