請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/94037
標題: Downregulated CXCL12 expression in mesenchymal stem cells associated with severe aplastic anemia in children
作者: Chao, Yu-Hua
Wu, Kang-Hsi
Chiou, Shiow-Her
Chiang, Shu-Fen
Huang, Chih-Yang
Yang, Hsiu-Ching
Chan, Chin-Kan
Peng, Ching-Tien
Wu, Han-Ping
Chow, Kuan-Chih
Lee, Maw-Sheng
關鍵字: Adolescent
Anemia, Aplastic
Chemokine CXCL12
Child
Child, Preschool
Down-Regulation
Female
Gene Expression Regulation
Humans
Male
Mesenchymal Stromal Cells
Gene Expression Profiling
Severity of Illness Index
摘要: The mechanisms of idiopathic severe aplastic anemia (SAA) in children are not completely understood. Insufficiency of the bone marrow microenvironment, in which mesenchymal stem cells (MSCs) are an important element, can be a potential factor associated with hematopoietic impairment. In the current study, we studied whether aberrant gene expression could be found in MSCs from children with SAA. Using microarray analysis, two different patterns of global gene expression were detected in the SAA MSCs. Fourteen genes (POLE2, HGF, KIF20A, TK1, IL18R1, KITLG, FGF18, RRM2, TTK, CXCL12, DLG7, TOP2A, NUF2, and TYMS), which are related to DNA synthesis, cytokines, or growth factors, were significantly downregulated. Further, knockdown of gene expression was performed using the small hairpin RNA (shRNA)-containing lentivirus method. We found that knockdown of CXCL12, HGF, IL-18R1, FGF18, or RRM2 expression compelled MSCs from the controls to behave like those from the SAA children, with decreased survival and differentiation potential. Among them, inhibition of CXCL12 gene expression had the most profound effects on the behavior of MSCs. Further experiments regarding re-introduction of the CXCL12 gene could largely recover the survival and differentiation potential in MSCs with inhibition of CXCL12 expression. Our findings suggest that MSCs from children with SAA exhibit aberrant gene expression profiles and downregulation of CXCL12 gene may be associated with alterations in the bone marrow microenvironment.
URI: http://hdl.handle.net/11455/94037
顯示於類別:生物醫學研究所

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