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2017 ; 8
(3
): 4914-4921
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ED-B fibronectin expression is a marker of epithelial-mesenchymal transition in
translational oncology
#MMPMID27902486
Petrini I
; Barachini S
; Carnicelli V
; Galimberti S
; Modeo L
; Boni R
; Sollini M
; Erba PA
Oncotarget
2017[Jan]; 8
(3
): 4914-4921
PMID27902486
show ga
Fibronectin is a component of the extracellular matrix that links collagen fibers
to integrins on the cell's surface. The splicing isoforms, containing the ED-B
domain, are not expressed in adult tissues but only in tumor stroma or during
embryonic development. Fibroblasts and endothelial cells express ED-B fibronectin
during angiogenesis. Also cancer cells can synthetize ED-B fibronectin, but its
function in tumor growth needs to be further elucidated.We evaluated the
expression of ED-B fibronectin in prostate cancer cell lines: PC3 and DU145.
Using TGF-?, we induced epithelial to mesenchymal transition in culture and
observed an increase of ED-B fibronectin expression. Thereafter, we evaluated the
expression of ED-B fibronectin in multipotent mesangiogenic progenitor cells, and
in mesenchymal stromal cells. The expression of ED-B fibronectin was much higher
in mesenchymal than prostate cancer cells even after the epithelial to
mesenchymal transition.Epithelial to mesenchymal transition is a key step for
tumor progression contributing to the metastatic spread. Therefore, circulating
cancer cells could seed into the metastatic niche taking advantage from the ED-B
fibronectin that secrete their own.