Advances in understanding the leukaemia microenvironment
- PMID: 24405087
- PMCID: PMC4381431
- DOI: 10.1111/bjh.12725
Advances in understanding the leukaemia microenvironment
Abstract
Dynamic interactions between leukaemic cells and cells of the bone marrow are a feature of haematological malignancies. Two distinct microenvironmental niches in the bone marrow, the 'osteoblastic (endosteal)' and 'vascular' niches, provide a sanctuary for subpopulations of leukaemic cells to evade chemotherapy-induced death and allow acquisition of drug resistance. Key components of the bone marrow microenvironment as a home for normal haematopoietic stem cells and the leukaemia stem cell niches, and the molecular pathways critical for microenvironment/leukaemia interactions via cytokines, chemokines and adhesion molecules as well as hypoxic conditions, are described in this review. Finally, the genetic abnormalities of leukaemia-associated stroma are discussed. Further understanding of the contribution of the bone marrow niche to the process of leukaemogenesis may provide new targets that allow destruction of leukaemia stem cells without adversely affecting normal stem cell self-renewal.
Keywords: bone marrow microenvironment; leukaemia; stem cell niche.
© 2014 John Wiley & Sons Ltd.
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