Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 217.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 251.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 251.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 251.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 251.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 251.2 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\28586036
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Mol+Med+Rep
2017 ; 16
(1
): 746-754
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Epigenetically silenced PTPRO functions as a prognostic marker and tumor
suppressor in human lung squamous cell carcinoma
#MMPMID28586036
Ming F
; Sun Q
Mol Med Rep
2017[Jul]; 16
(1
): 746-754
PMID28586036
show ga
Protein tyrosine phosphatase receptor?type O (PTPRO), a member of the PTP family,
has been frequently reported as potential tumor suppressor in many types of
cancer. However, the exact function of PTPRO in lung squamous cell carcinoma
(LSCC) remains unclear. Bisulfite sequencing and methylation specific polymerase
chain reaction (PCR) were used to identify the methylation status of PTPRO in
LSCC cells, and quantitative methylation specific PCR was used to evaluate the
methylation levels of PTPRO in LSCC patients. Stably expressing PTPRO vectors
were constructed and transfected into H520 and SK?MES?1 cells, followed by MTT
and colony formation assays, and analysis of tumor weight and volume in in vivo
mouse xenograft models. The present study demonstrated that the CpG island of
PTPRO exon 1 was obviously hypermethylated in LSCC cells and tissues. The mRNA
expression of PTPRO could be restored by treatment with a demethylation agent.
Increased methylation and decreased mRNA levels of PTPRO were observed in LSCC
samples compared with adjacent healthy tissues, and were associated with poor
prognosis of patients. The mRNA expression of PTPRO was negatively correlated
with its methylation level in tumors. Functionally, ectopic PTPRO expression in
LSCC cells significantly inhibited the proliferation rates, and colony formation,
in comparison with control and non?transfected cells. In vivo assays confirmed
the inhibitory effect of PTPRO on LSCC cell growth. In conclusion, these data
provided evidence that epigenetic regulation of PTPRO impairs its tumor
suppressor role in LSCC, and restoration of PTPRO may be a potential therapeutic
strategy.