The TALE-class homeoprotein MEIS1 specifically collaborates with HOXA9 to drive myeloid leukemogenesis. Although MEIS1 alone has only a moderate effect on cell proliferation in vitro, it is essential for the development of HOXA9-induced leukemia in vivo. Here, using murine models of leukemogenesis, we have shown that MEIS1 promotes leukemic cell homing and engraftment in bone marrow and enhances cell-cell interactions and cytokine-mediated cell migration. We analyzed global DNA binding of MEIS1 in leukemic cells as well as gene expression alterations in MEIS1-deficent cells and identified synaptotagmin-like 1 (
Takashi Yokoyama, Mayuka Nakatake, Takeshi Kuwata, Arnaud Couzinet, Ryo Goitsuka, Shuichi Tsutsumi, Hiroyuki Aburatani, Peter J.M. Valk, Ruud Delwel, Takuro Nakamura
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