骨髓增生异常综合征骨髓微环境的改变

Changes of bone marrow microenvironment of myelodysplastic syndromes

骨髓微环境是一个由造血干／祖细胞（HSPC）、非造血细胞以及细胞外基质和多种细胞因子等组成的复杂网状结构，其各成分相互作用以支持正常的造血。近来研究发现，骨髓微环境中的间充质干细胞（MSC）、髓源抑制性细胞、细胞因子功能紊乱以及造血干细胞的表观遗传学改变都可以影响正常造血，导致血液系统恶性疾病如骨髓增生异常综合征（MDS）的发生。已有动物模型证实了骨髓微环境在造血系统恶性疾病的发生和维持中起着重要作用。

Bone marrow microenvironment is a complex network consisting of hematopoietic stem/pro-genitor cells （HSPCs）,non-hematopoietic cells,extracellular matrix and various cytokines.Its components interact to support normal hematopoiesis.Emerging evidence indicates that the dysfunction of mesenchymal stem cells,myeloid-derived suppressor cells,cytokines and the epigenetic alterations of HSPCs in the bone marrow microenvironment could influence normal hematopoiesis.Abnormal hematopoiesis contributes to the occurrence of hematological malignancies,such as myelodysplastic syndromes （MDS）.Animal models have confirmed that bone marrow microenvironment plays an important role in the original generation and maintenance of malignant diseases of hematopoietic system.