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2015 ; 2015
(ä): 628158
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Cross-omics comparison of stress responses in mesothelial cells exposed to heat-
versus filter-sterilized peritoneal dialysis fluids
#MMPMID26495307
Kratochwill K
; Bender TO
; Lichtenauer AM
; Herzog R
; Tarantino S
; Bialas K
; Jörres A
; Aufricht C
Biomed Res Int
2015[]; 2015
(ä): 628158
PMID26495307
show ga
Recent research suggests that cytoprotective responses, such as expression of
heat-shock proteins, might be inadequately induced in mesothelial cells by
heat-sterilized peritoneal dialysis (PD) fluids. This study compares
transcriptome data and multiple protein expression profiles for providing new
insight into regulatory mechanisms. Two-dimensional difference gel
electrophoresis (2D-DIGE) based proteomics and topic defined gene expression
microarray-based transcriptomics techniques were used to evaluate stress
responses in human omental peritoneal mesothelial cells in response to heat- or
filter-sterilized PD fluids. Data from selected heat-shock proteins were
validated by 2D western-blot analysis. Comparison of proteomics and
transcriptomics data discriminated differentially regulated protein abundance
into groups depending on correlating or noncorrelating transcripts. Inadequate
abundance of several heat-shock proteins following exposure to heat-sterilized PD
fluids is not reflected on the mRNA level indicating interference beyond
transcriptional regulation. For the first time, this study describes evidence for
posttranscriptional inadequacy of heat-shock protein expression by
heat-sterilized PD fluids as a novel cytotoxic property. Cross-omics technologies
introduce a novel way of understanding PDF bioincompatibility and searching for
new interventions to reestablish adequate cytoprotective responses.