Cancer stem cells: Distinct entities or dynamically regulated phenotypes?

Yunqing Li, John Laterra

Research output: Contribution to journalReview articlepeer-review


The origins of tumor-propagating neoplastic stem-like cells [cancer stem cells (CSC)] and their relationship to the bulk population of tumor cells that lack stem-like tumor-propagating features (i.e., transit-amplifying cancer progenitor cells) remain unclear. Recent findings from multiple laboratories show that cancer progenitor cells have the capacity to dedifferentiate and acquire a stem-like phenotype in response to either genetic manipulation or environmental cues. These findings suggest that CSCs and relatively differentiated progenitors coexist in dynamic equilibrium and are subject to bidirectional conversion. In this review, we discuss emerging concepts regarding the stem-like phenotype, its acquisition by cancer progenitor cells, and the molecular mechanisms involved. Understanding the dynamic equilibrium between CSCs and cancer progenitor cells is critical for the development of therapeutic strategies to deplete tumors of their tumor-propagating and treatment-resistant cell subpopulations.

Original languageEnglish (US)
Pages (from-to)576-580
Number of pages5
JournalCancer Research
Issue number3
StatePublished - Feb 1 2012

ASJC Scopus subject areas

  • Oncology
  • Cancer Research


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