Increased Expression of Interferon Signaling Genes in the Bone Marrow Microenvironment of Myelodysplastic Syndromes

Title
Increased Expression of Interferon Signaling Genes in the Bone Marrow Microenvironment of Myelodysplastic Syndromes
Authors
박기정
Keywords
SEQUENCE-BINDING-PROTEIN; REGULATORY FACTOR FAMILY; MESENCHYMAL STEM-CELLS; ACUTE MYELOID-LEUKEMIA; FACTOR DEC1 STRA13; IN-VITRO; TRANSCRIPTION; CANCER; MECHANISMS; PATHOGENESIS
Issue Date
2015-03
Publisher
PUBLIC LIBRARY SCIENCE
Citation
PLOS ONE, v. 10, NO 3, Page. 1-15
Abstract
Introduction The bone marrow (BM) microenvironment plays an important role in the pathogenesis of myelodysplastic syndromes (MDS) through a reciprocal interaction with resident BM hematopoietic cells. We investigated the differences between BM mesenchymal stromal cells (MSCs) in MDS and normal individuals and identified genes involved in such differences. Materials and Methods BM-derived MSCs from 7 MDS patients (3 RCMD, 3 RAEB-1, and 1 RAEB-2) and 7 controls were cultured. Global gene expression was analyzed using a microarray. Result We found 314 differentially expressed genes (DEGs) in RCMD vs. control, 68 in RAEB vs. control, and 51 in RAEB vs. RCMD. All comparisons were clearly separated from one another by hierarchical clustering. The overall similarity between differential expression signatures from the RCMD vs. control comparison and the RAEB vs. control comparison was highly significant (p = 0), which indicates a common transcriptomic response in these two MDS subtypes. RCMD and RAEB simultaneously showed an up-regulation of interferon alpha/beta signaling and the ISG15 antiviral mechanism, and a significant fraction of the RAEB vs. control DEGs were also putative targets of transcription factors IRF and ICSBP. Pathways that involved RNA polymerases I and III and mitochondrial transcription were down-regulated in RAEB compared to RCMD. Conclusion Gene expression in the MDS BM microenvironment was different from that in normal BM and exhibited altered expression according to disease progression. The present study provides genetic evidence that inflammation and immune dysregulation responses that involve the interferon signaling pathway in the BM microenvironment are associated with MDS pathogenesis, which suggests BM MSCs as a possible therapeutic target in MDS.
URI
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0120602http://hdl.handle.net/20.500.11754/22734
ISSN
1932-6203
DOI
http://dx.doi.org/10.1371/journal.pone.0120602
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RESEARCH INSTITUTE[S](부설연구소) > ETC
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