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2015 ; 75
(9
): 1789-800
Nephropedia Template TP
gab.com Text
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Molecular portraits of epithelial, mesenchymal, and hybrid States in lung
adenocarcinoma and their relevance to survival
#MMPMID25744723
Schliekelman MJ
; Taguchi A
; Zhu J
; Dai X
; Rodriguez J
; Celiktas M
; Zhang Q
; Chin A
; Wong CH
; Wang H
; McFerrin L
; Selamat SA
; Yang C
; Kroh EM
; Garg KS
; Behrens C
; Gazdar AF
; Laird-Offringa IA
; Tewari M
; Wistuba II
; Thiery JP
; Hanash SM
Cancer Res
2015[May]; 75
(9
): 1789-800
PMID25744723
show ga
Epithelial-to-mesenchymal transition (EMT) is a key process associated with tumor
progression and metastasis. To define molecular features associated with EMT
states, we undertook an integrative approach combining mRNA, miRNA, DNA
methylation, and proteomic profiles of 38 cell populations representative of the
genomic heterogeneity in lung adenocarcinoma. The resulting data were integrated
with functional profiles consisting of cell invasiveness, adhesion, and motility.
A subset of cell lines that were readily defined as epithelial or mesenchymal
based on their morphology and E-cadherin and vimentin expression elicited
distinctive molecular signatures. Other cell populations displayed
intermediate/hybrid states of EMT, with mixed epithelial and mesenchymal
characteristics. A dominant proteomic feature of aggressive hybrid cell lines was
upregulation of cytoskeletal and actin-binding proteins, a signature shared with
mesenchymal cell lines. Cytoskeletal reorganization preceded loss of E-cadherin
in epithelial cells in which EMT was induced by TGF?. A set of transcripts
corresponding to the mesenchymal protein signature enriched in cytoskeletal
proteins was found to be predictive of survival in independent datasets of lung
adenocarcinomas. Our findings point to an association between cytoskeletal and
actin-binding proteins, a mesenchymal or hybrid EMT phenotype and invasive
properties of lung adenocarcinomas.