Chemotherapy-resistant human AML stem cells home to and engraft within the bone-marrow endosteal region - PubMed (original) (raw)
. 2007 Nov;25(11):1315-21.
doi: 10.1038/nbt1350. Epub 2007 Oct 21.
Shuro Yoshida, Yoriko Saito, Atsushi Hijikata, Hiroshi Kitamura, Satoshi Tanaka, Ryu Nakamura, Toru Tanaka, Hiroko Tomiyama, Noriyuki Saito, Mitsuhiro Fukata, Toshihiro Miyamoto, Bonnie Lyons, Koichi Ohshima, Naoyuki Uchida, Shuichi Taniguchi, Osamu Ohara, Koichi Akashi, Mine Harada, Leonard D Shultz
Affiliations
- PMID: 17952057
- DOI: 10.1038/nbt1350
Chemotherapy-resistant human AML stem cells home to and engraft within the bone-marrow endosteal region
Fumihiko Ishikawa et al. Nat Biotechnol. 2007 Nov.
Abstract
Acute myelogenous leukemia (AML) is the most common adult leukemia, characterized by the clonal expansion of immature myeloblasts initiating from rare leukemic stem (LS) cells. To understand the functional properties of human LS cells, we developed a primary human AML xenotransplantation model using newborn nonobese diabetic/severe combined immunodeficient/interleukin (NOD/SCID/IL)2r gamma(null) mice carrying a complete null mutation of the cytokine gamma c upon the SCID background. Using this model, we demonstrated that LS cells exclusively recapitulate AML and retain self-renewal capacity in vivo. They home to and engraft within the osteoblast-rich area of the bone marrow, where AML cells are protected from chemotherapy-induced apoptosis. Quiescence of human LS cells may be a mechanism underlying resistance to cell cycle-dependent cytotoxic therapy. Global transcriptional profiling identified LS cell-specific transcripts that are stable through serial transplantation. These results indicate the potential utility of this AML xenograft model in the development of novel therapeutic strategies targeted at LS cells.
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