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2017 ; 7
(ä): 44941
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Genomic reprograming analysis of the Mesothelial to Mesenchymal Transition
identifies biomarkers in peritoneal dialysis patients
#MMPMID28327551
Ruiz-Carpio V
; Sandoval P
; Aguilera A
; Albar-Vizcaíno P
; Perez-Lozano ML
; González-Mateo GT
; Acuña-Ruiz A
; García-Cantalejo J
; Botías P
; Bajo MA
; Selgas R
; Sánchez-Tomero JA
; Passlick-Deetjen J
; Piecha D
; Büchel J
; Steppan S
; López-Cabrera M
Sci Rep
2017[Mar]; 7
(ä): 44941
PMID28327551
show ga
Peritoneal dialysis (PD) is an effective renal replacement therapy, but a
significant proportion of patients suffer PD-related complications, which limit
the treatment duration. Mesothelial-to-mesenchymal transition (MMT) contributes
to the PD-related peritoneal dysfunction. We analyzed the genetic reprograming of
MMT to identify new biomarkers that may be tested in PD-patients. Microarray
analysis revealed a partial overlapping between MMT induced in vitro and ex vivo
in effluent-derived mesothelial cells, and that MMT is mainly a repression
process being higher the number of genes that are down-regulated than those that
are induced. Cellular morphology and number of altered genes showed that MMT ex
vivo could be subdivided into two stages: early/epithelioid and
advanced/non-epithelioid. RT-PCR array analysis demonstrated that a number of
genes differentially expressed in effluent-derived non-epithelioid cells also
showed significant differential expression when comparing standard versus low-GDP
PD fluids. Thrombospondin-1 (TSP1), collagen-13 (COL13), vascular endothelial
growth factor A (VEGFA), and gremlin-1 (GREM1) were measured in PD effluents, and
except GREM1, showed significant differences between early and advanced stages of
MMT, and their expression was associated with a high peritoneal transport status.
The results establish a proof of concept about the feasibility of measuring
MMT-associated secreted protein levels as potential biomarkers in PD.