Journal
CELLULAR AND MOLECULAR LIFE SCIENCES
Volume 72, Issue 10, Pages 1959-1966Publisher
SPRINGER BASEL AG
DOI: 10.1007/s00018-015-1846-x
Keywords
Myelodysplastic syndromes (MDS); Inflammation; Myeloid-derived suppressor cells (MDSC); Microenvironment; Stromal cells; Immunosuppression; Innate immunity
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Funding
- Tianjin Natural Science Fund [14JCYBJC12100]
- NCI [K01CA187020]
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Myelodysplastic syndromes (MDS) are a collection of pre-malignancies characterized by impaired proliferation and differentiation of hematopoietic stem cells and a tendency to evolve into leukemia. Among MDS's pathogenic mechanisms are genetic, epigenetic, apoptotic, differentiation, and cytokine milieu abnormalities. Inflammatory changes are a prominent morphologic feature in some cases, with increased populations of plasma cells, mast cells, and lymphocytes in bone marrow aspirates. Accumulating evidence suggests that the bone marrow microenvironment contributes to MDS disease pathology, with microenvironment alterations and abnormality preceding, and facilitating clonal evolution in MDS patients. In this review, we focus on the inflammatory changes involved in the pathology of MDS, with an emphasis on immune dysfunction, stromal microenvironment, and cytokine imbalance in the microenvironment as well as activation of innate immune signaling in MDS patients. A better understanding of the mechanism of MDS pathophysiology will be beneficial to the development of molecular-targeted therapies in the future.
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