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 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 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\26286192
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nucleic+Acids+Res
2015 ; 43
(17
): 8435-51
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Involvement of SRSF11 in cell cycle-specific recruitment of telomerase to
telomeres at nuclear speckles
#MMPMID26286192
Lee JH
; Jeong SA
; Khadka P
; Hong J
; Chung IK
Nucleic Acids Res
2015[Sep]; 43
(17
): 8435-51
PMID26286192
show ga
Telomerase, a unique ribonucleoprotein complex that contains the telomerase
reverse transcriptase (TERT), the telomerase RNA component (TERC) and the
TERC-binding protein dyskerin, is required for continued cell proliferation in
stem cells and cancer cells. Here we identify SRSF11 as a novel TERC-binding
protein that localizes to nuclear speckles, subnuclear structures that are
enriched in pre-messenger RNA splicing factors. SRSF11 associates with active
telomerase enzyme through an interaction with TERC and directs it to nuclear
speckles specifically during S phase of the cell cycle. On the other hand, a
subset of telomeres is shown to be constitutively present at nuclear speckles
irrespective of cell cycle phase, suggesting that nuclear speckles could be the
nuclear sites for telomerase recruitment to telomeres. SRSF11 also associates
with telomeres through an interaction with TRF2, which facilitates translocation
of telomerase to telomeres. Depletion of SRSF11 prevents telomerase from
associating with nuclear speckles and disrupts telomerase recruitment to
telomeres, thereby abrogating telomere elongation by telomerase. These findings
suggest that SRSF11 acts as a nuclear speckle-targeting factor that is essential
for telomerase association with telomeres through the interactions with TERC and
TRF2, and provides a potential target for modulating telomerase activity in
cancer.