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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Bioinform+Biol+Insights
2015 ; 9
(Suppl 3
): 11-9
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gab.com Text
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B-Cell and Monocyte Contribution to Systemic Lupus Erythematosus Identified by
Cell-Type-Specific Differential Expression Analysis in RNA-Seq Data
#MMPMID26512198
Dozmorov MG
; Dominguez N
; Bean K
; Macwana SR
; Roberts V
; Glass E
; James JA
; Guthridge JM
Bioinform Biol Insights
2015[]; 9
(Suppl 3
): 11-9
PMID26512198
show ga
Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by
complex interplay among immune cell types. SLE activity is experimentally
assessed by several blood tests, including gene expression profiling of
heterogeneous populations of cells in peripheral blood. To better understand the
contribution of different cell types in SLE pathogenesis, we applied the two
methods in cell-type-specific differential expression analysis, csSAM and
DSection, to identify cell-type-specific gene expression differences in
heterogeneous gene expression measures obtained using RNA-seq technology. We
identified B-cell-, monocyte-, and neutrophil-specific gene expression
differences. Immunoglobulin-coding gene expression was altered in B-cells, while
a ribosomal signature was prominent in monocytes. On the contrary, genes
differentially expressed in the heterogeneous mixture of cells did not show any
functional enrichment. Our results identify antigen binding and structural
constituents of ribosomes as functions altered by B-cell- and monocyte-specific
gene expression differences, respectively. Finally, these results position both
csSAM and DSection methods as viable techniques for cell-type-specific
differential expression analysis, which may help uncover pathogenic,
cell-type-specific processes in SLE.