Journal
ONCOGENE
Volume 23, Issue 43, Pages 7178-7187Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.onc.1207935
Keywords
leukemia; stem cell; myeloid; leukemogenesis; NF-kappa B; LSC
Funding
- NCI NIH HHS [R01-CA90446] Funding Source: Medline
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Stem cells are an integral component of normal mammalian physiology and have been intensively studied in many systems. Intriguingly, substantial evidence indicates that stem cells also play an important role in the initiation and pathogenesis of at least some cancers. In particular, myeloid leukemias have been extensively characterized with regard to stem and progenitor cell involvement. Thus, as a focal point for both scientific and therapeutic endeavors, leukemic stem cells (LSC) represent a critical area of investigation. LSC appear to retain many characteristics of normal hematopoietic stem cells (HSC) as evidenced by a hierarchical developmental pattern, a mostly quiescent cell cycle pro. le, and an immunophenotype very similar to HSC. Consequently, de. ning unique properties of LSC remains a high priority in order to elucidate the molecular mechanisms driving stem cell transformation, and for developing therapeutic strategies that specifically target the LSC population. In this review, we discuss emerging concepts in the field and describe how various molecular and cellular characteristics of leukemia cells might be exploited as a means to preferentially ablate malignant stem cells.
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