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ADVANCES IN UNDERSTANDING THE LEUKEMIA MICROENVIRONMENT #MMPMID24405087
Tabe Y; Konopleva M
Br J Haematol 2014[Mar]; 164 (6): 767-78 PMID24405087show ga
Dynamic interactions between leukemic cells and cells of the bone marrow are a feature of hematological malignancies. Two distinct microenvironmental niches in the bone marrow, the ?osteoblastic (endosteal)? and ?vascular? niches, provide a sanctuary for subpopulations of leukemic cells to evade chemotherapy-induced death and allow acquisition of a drug-resistance. Key components of the bone marrow microenvironment as a home for normal hematopoietic stem cells and the leukemia stem cell niches, and the molecular pathways critical for microenvironment/leukemia interactions via cytokines, chemokines, and adhesion molecules as well as hypoxic conditions, are described in this review. Finally, the genetic abnormalities of leukemia-associated stroma are discussed. Further understanding of the contribution of the bone marrow niche to the process of leukemogenesis may provide new targets that allow destruction of leukemia stem cells without adversely affecting normal stem cell self-renewal.