Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 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\28623290
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Sci+Rep
2017 ; 7
(1
): 3744
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
TCRP1 transcriptionally regulated by c-Myc confers cancer chemoresistance in
tongue and lung cancer
#MMPMID28623290
Jia X
; Zhang Z
; Luo K
; Zheng G
; Lu M
; Song Y
; Liu H
; Qiu H
; He Z
Sci Rep
2017[Jun]; 7
(1
): 3744
PMID28623290
show ga
Previously, we cloned a new gene termed 'tongue cancer resistance-associated
protein 1' (TCRP1), which modulates tumorigenesis, enhances cisplatin (cDDP)
resistance in cancers, and may be a potential target for reversing drug
resistance. However, the mechanisms for regulating TCRP1 expression remain
unclear. Herein, we combined bioinformatics analysis with luciferase reporter
assay and ChIP assay to determine that c-Myc could directly bind to TCRP1
promoter to upregulate its expression. TCRP1 upregulation in multidrug resistant
tongue cancer cells (Tca8113/PYM) and cisplatin-resistant A549 lung cancer cells
(A549/DDP) was accompanied by c-Myc upregulation, compared to respective parental
cells. In tongue and lung cancer cells, siRNA-mediated knockdown of c-Myc led to
decrease TCRP1 expression, whereas overexpression c-Myc did the opposite.
Moreover, TCRP1 knockdown attenuated chemoresistance resulting from c-Myc
overexpression, but TCRP1 overexpression impaired the effect of c-Myc knockdown
on chemosensitivity. Additionally, in both human tongue and lung cancer tissues,
c-Myc protein expression positively correlated with TCRP1 protein expression and
these protein levels were associated with worse prognosis for patients. Combined,
these findings suggest that c-Myc could transcriptionally regulate TCRP1 in cell
lines and clinical samples and identified the c-Myc-TCRP1 axis as a negative
biomarker of prognosis in tongue and lung cancers.