Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=27602768
&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
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\27602768
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Oncotarget
2016 ; 7
(39
): 64100-64108
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
MiR-19b suppresses PTPRG to promote breast tumorigenesis
#MMPMID27602768
Liu M
; Yang R
; Urrehman U
; Ye C
; Yan X
; Cui S
; Hong Y
; Gu Y
; Liu Y
; Zhao C
; Yan L
; Zhang CY
; Liang H
; Chen X
Oncotarget
2016[Sep]; 7
(39
): 64100-64108
PMID27602768
show ga
Protein tyrosine phosphatase receptor type G (PTPRG) is an important tumor
suppressor gene in multiple human cancers. In this study, we found that PTPRG
protein levels were downregulated in breast cancer tissues while the mRNA levels
varied irregularly, implying a post-transcriptional mechanism was involved.
Because microRNAs are powerful post-transcriptional regulators of gene
expression, we used bioinformatics analysis to search for microRNAs that
potentially targets PTPRG in the setting of breast cancer. We identified two
specific binding sites for miR-19b in the 3'-untranslated region of PTPRG. We
further identified an inverse correlation between miR-19b and PTPRG protein
levels, but not mRNA levels, in human breast cancer tissues. By overexpressing or
knocking down miR-19b in MCF-7 cells and MDA-231 cells, we experimentally
confirmed that miR-19b directly suppresses PTPRG expression. Furthermore, we
determined that the inhibition of PTPRG by miR-19b leads to increased
proliferation, stimulated cell migration and reduced apoptosis. Taken together,
our findings provide the first evidence that miR-19b inhibits PTPRG expression to
promote tumorigenesis in human breast cancer.