Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=26062653
&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 296.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 296.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 296.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\26062653
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Oncotarget
2015 ; 6
(18
): 16638-52
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Dual regulation by microRNA-200b-3p and microRNA-200b-5p in the inhibition of
epithelial-to-mesenchymal transition in triple-negative breast cancer
#MMPMID26062653
Rhodes LV
; Martin EC
; Segar HC
; Miller DF
; Buechlein A
; Rusch DB
; Nephew KP
; Burow ME
; Collins-Burow BM
Oncotarget
2015[Jun]; 6
(18
): 16638-52
PMID26062653
show ga
Epithelial to mesenchymal transition (EMT) involves loss of an epithelial
phenotype and activation of a mesenchymal one. Enhanced expression of genes
associated with a mesenchymal transition includes ZEB1/2, TWIST, and FOXC1.
miRNAs are known regulators of gene expression and altered miRNA expression is
known to enhance EMT in breast cancer. Here we demonstrate that the tumor
suppressive miRNA family, miR-200, is not expressed in triple negative breast
cancer (TNBC) cell lines and that miR-200b-3p over-expression represses EMT,
which is evident through decreased migration and increased CDH1 expression.
Despite the loss of migratory capacity following re-expression of miR-200b-3p, no
subsequent loss of the conventional miR-200 family targets and EMT markers ZEB1/2
was observed. Next generation RNA-sequencing analysis showed that enhanced
expression of pri-miR-200b lead to ectopic expression of both miR-200b-3p and
miR-200b-5p with multiple isomiRs expressed for each of these miRNAs.
Furthermore, miR-200b-5p was expressed in the receptor positive, epithelial
breast cancer cell lines but not in the TNBC (mesenchymal) cell lines. In
addition, a compensatory mechanism for miR-200b-3p/200b-5p targeting, where both
miRNAs target the RHOGDI pathway leading to non-canonical repression of EMT, was
demonstrated. Collectively, these data are the first to demonstrate dual
targeting by miR-200b-3p and miR-200b-5p and a previously undescribed role for
microRNA processing and strand expression in EMT and TNBC, the most aggressive
breast cancer subtype.