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 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
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\22806826
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Pathol
2013 ; 230
(2
): 194-204
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Epigenetic regulation of DACT2, a key component of the Wnt signalling pathway in
human lung cancer
#MMPMID22806826
Jia Y
; Yang Y
; Brock MV
; Zhan Q
; Herman JG
; Guo M
J Pathol
2013[Jun]; 230
(2
): 194-204
PMID22806826
show ga
Dapper, Dishevelled-associated antagonist of ?-catenin (DACT), is involved in
Xenopus embryonic development. Human DACT2 is localized on chromosome 6q27, a
region of frequent loss of heterozygosity (LOH) in human cancers. However, the
function and regulation of DACT2 in human lung cancer remain unclear. DNA
sequencing, methylation-specific PCR (MSP), semi-quantitative RT-PCR, western
blotting, and xenograft models were employed in this study. Eight lung cancer
cell lines, 106 cases of primary lung cancer, four specimens of normal lung from
patients without cancer, and 99 blood samples from healthy individuals were
examined. We found that while there was no SNP related to lung cancer, the DACT2
promoter region is frequently methylated in human lung cancer. DACT2 is silenced
by promoter region hypermethylation and re-expressed by 5-aza-2'-deoxyazacytidine
treatment of lung cancer cell lines. Methylation of DACT2 was associated with
poor differentiation of lung cancer. Loss of DACT2 expression was associated with
promoter region hypermethylation in primary lung cancer, and was associated with
increased ?-catenin expression. Restoration of DACT2 expression suppressed tumour
proliferation both in vitro and in vivo. DACT2 expression was down-regulated by
siRNA knockdown in H727 cells. DACT2 inhibited T-cell factor/lymphoid enhancer
factor (TCF/LEF) and its downstream genes. In conclusion, DACT2 methylation is a
potential lung cancer detection marker. DACT2 is regulated by promoter region
hypermethylation. DACT2 inhibits lung cancer proliferation by suppressing the Wnt
signalling pathway in lung cancer.