title: Cytokine expression patterns and mesenchymal stem cell karyotypes from the bone marrow microenvironment of patients with myelodysplastic syndromes.
abstract: The purpose of this study was to explore cytokine expression patterns and cytogenetic abnormalities of mesenchymal stem cells (MSCs) from the bone marrow microenvironment of Chinese patients with myelodysplastic syndromes (MDS). Bone marrow samples were obtained from 30 cases of MDS (MDS group) and 30 healthy donors (control group). The expression pattern of cytokines was detected by customized protein array. The karyotypes of MSCs were analyzed using fluorescence in situ hybridization. Compared with the control group, leukemia inhibitory factor, stem cell factor (SCF), stromal cell-derived factor (SDF-1), bone morphogenetic protein 4, hematopoietic stem cell (HSC) stimulating factor, and transforming growth factor-β in the MDS group were significantly downregulated (P<0.05), while interferon-γ (IFN-γ), tumor necrosis factor-α (TNF-α), and programmed death ligand (B7-H1) were significantly upregulated (P<0.05). For chromosome abnormality analysis, the detection rate of abnormal karyotypes (+8, -8, -20, 20q-, -Y, -7, 5q-) was 30% in the MDS group and 0% in the control group. In conclusion, the up- and downregulated expression of these cytokines might play a key role in the pathogenesis of MDS. Among them, SCF and SDF-1 may play roles in the apoptosis of HSCs in MDS; and IFN-γ, TNF-α, and B7-H1 may be associated with apoptosis of bone marrow cells in MDS. In addition, the abnormal karyotypes might be actively involved in the pathogenesis of MDS. Further studies are required to determine the role of abnormal karyotypes in the occurrence and development of MDS.
authors.affiliation: Department of Hematology, Shanghai Clinical Research Center, Chinese Academy of Sciences, Shanghai Xuhui District Central Hospital, Shanghai, China.
authors.forename: H
authors.initials: H
authors.lastname: Xiong
authors.affiliation: Department of Hematology, Shanghai Clinical Research Center, Chinese Academy of Sciences, Shanghai Xuhui District Central Hospital, Shanghai, China.
authors.forename: X Y
authors.initials: XY
authors.lastname: Yang
authors.affiliation: Department of Hematology, Shanghai Clinical Research Center, Chinese Academy of Sciences, Shanghai Xuhui District Central Hospital, Shanghai, China.
authors.forename: J
authors.initials: J
authors.lastname: Han
authors.affiliation: Department of Hematology, Shanghai Clinical Research Center, Chinese Academy of Sciences, Shanghai Xuhui District Central Hospital, Shanghai, China.
authors.forename: Q
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Department of Hematology, Shanghai Clinical Research Center, Chinese Academy of Sciences, Shanghai Xuhui District Central Hospital, Shanghai, China.
authors.forename: Z L
authors.initials: ZL
authors.lastname: Zou
mesh_terms: D059786:Abnormal Karyotype; D000328:Adult; D000368:Aged; D017209:Apoptosis; D001854:Bone Marrow Cells / Q000276:immunology / Q000378:metabolism*; D016022:Case-Control Studies; D016207:Cytokines / Q000235:genetics / Q000276:immunology / Q000378:metabolism*; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D008297:Male; D059630:Mesenchymal Stem Cells / Q000276:immunology / Q000378:metabolism*; D008875:Middle Aged; D009190:Myelodysplastic Syndromes / Q000235:genetics / Q000276:immunology / Q000378:metabolism*; D010641:Phenotype
chemical_list: D016207:Cytokines