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Acute myeloid leukemia originates from a hierarchy of leukemic stem cell classes that differ in self-renewal capacity

Acute myeloid leukemia originates from a hierarchy of leukemic stem cell classes that differ in... Emerging evidence suggests cancer stem cells sustain neoplasms; however, little is understood of the normal cell initially targeted and the resultant cancer stem cells. We show here, by tracking individual human leukemia stem cells (LSCs) in nonobese diabetic–severe combined immunodeficiency mice serially transplanted with acute myeloid leukemia cells, that LSCs are not functionally homogeneous but, like the normal hematopoietic stem cell (HSC) compartment, comprise distinct hierarchically arranged LSC classes. Distinct LSC fates derived from heterogeneous self-renewal potential. Some LSCs emerged only in recipients of serial transplantation, indicating they divided rarely and underwent self-renewal rather than commitment after cell division within primary recipients. Heterogeneity in LSC self-renewal potential supports the hypothesis that they derive from normal HSCs. Furthermore, normal developmental processes are not completely abolished during leukemogenesis. The existence of multiple stem cell classes shows the need for LSC-targeted therapies. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Immunology Springer Journals

Acute myeloid leukemia originates from a hierarchy of leukemic stem cell classes that differ in self-renewal capacity

Nature Immunology , Volume 5 (7) – May 30, 2004

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References (42)

Publisher
Springer Journals
Copyright
Copyright © 2004 by Nature Publishing Group
Subject
Biomedicine; Biomedicine, general; Immunology; Infectious Diseases
ISSN
1529-2908
eISSN
1529-2916
DOI
10.1038/ni1080
Publisher site
See Article on Publisher Site

Abstract

Emerging evidence suggests cancer stem cells sustain neoplasms; however, little is understood of the normal cell initially targeted and the resultant cancer stem cells. We show here, by tracking individual human leukemia stem cells (LSCs) in nonobese diabetic–severe combined immunodeficiency mice serially transplanted with acute myeloid leukemia cells, that LSCs are not functionally homogeneous but, like the normal hematopoietic stem cell (HSC) compartment, comprise distinct hierarchically arranged LSC classes. Distinct LSC fates derived from heterogeneous self-renewal potential. Some LSCs emerged only in recipients of serial transplantation, indicating they divided rarely and underwent self-renewal rather than commitment after cell division within primary recipients. Heterogeneity in LSC self-renewal potential supports the hypothesis that they derive from normal HSCs. Furthermore, normal developmental processes are not completely abolished during leukemogenesis. The existence of multiple stem cell classes shows the need for LSC-targeted therapies.

Journal

Nature ImmunologySpringer Journals

Published: May 30, 2004

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