IWASAKI Masayuki    Department   Research Institutes and Facilities, Research Institutes and Facilities    Position   Assistant Professor
Article types	Original article
Language	English
Peer review	Peer reviewed
Title	Hierarchical maintenance of MLL myeloid leukemia stem cells employs a transcriptional program shared with embryonic rather than adult stem cells.
Journal	Formal name：Cell stem cell Abbreviation：Cell Stem Cell ISSN code：18759777/18759777
Domestic / Foregin	Foregin
Volume, Issue, Page	4(2),pp.129-40
Author and coauthor	Somervaille Tim C P, Matheny Christina J, Spencer Gary J, Iwasaki Masayuki, Rinn John L, Witten Daniela M, Chang Howard Y, Shurtleff Sheila A, Downing James R, Cleary Michael L
Publication date	2009/02
Summary	The genetic programs that promote retention of self-renewing leukemia stem cells (LSCs) at the apex of cellular hierarchies in acute myeloid leukemia (AML) are not known. In a mouse model of human AML, LSCs exhibit variable frequencies that correlate with the initiating MLL oncogene and are maintained in a self-renewing state by a transcriptional subprogram more akin to that of embryonic stem cells (ESCs) than to that of adult stem cells. The transcription/chromatin regulatory factors Myb, Hmgb3, and Cbx5 are critical components of the program and suffice for Hoxa/Meis-independent immortalization of myeloid progenitors when coexpressed, establishing the cooperative and essential role of an ESC-like LSC maintenance program ancillary to the leukemia-initiating MLL/Hox/Meis program. Enriched expression of LSC maintenance and ESC-like program genes in normal myeloid progenitors and poor-prognosis human malignancies links the frequency of aberrantly self-renewing progenitor-like cancer stem cells (CSCs) to prognosis in human cancer.
DOI	10.1016/j.stem.2008.11.015
PMID	19200802