| ²é¿´: 478 | »Ø¸´: 1 | |||
biomill8358ÎÞ³æ (СÓÐÃûÆø)
|
[½»Á÷]
¡¾·ÖÏí¡¿RNA ½áºÏµ°°×HuRͨ¹ý´Ì¼¤XIAPµÄ·Òë¶ø½éµ¼µÄϸ°û±£»¤ ÒÑÓÐ1È˲ÎÓë
|
|
RNA-binding protein HuRmediates cytoprotectionthrough stimulation of XIAP translation RNA ½áºÏµ°°×HuRͨ¹ý´Ì¼¤XIAPµÄ·Òë¶ø½éµ¼µÄϸ°û±£»¤ DDurie1,2, S MLewis1,5, ULiwak1,2, MKisilewicz1,2, MGorospe4 and MHolcik Oncogene(2011) 30, 1460¨C1469; doi:10.1038/onc.2010.527; published online 22 November 2010 ÕªÒª£ºExpression of the intrinsic cellular caspaseinhibitor XIAP is regulated primarily at the level of protein synthesis. The 5¡äuntranslatedregion harboursan Internal Ribosome Entry Site (IRES) motif that supports cap-independent translation of XIAP mRNA during conditions of cellular stress. In this study, we show that the RNA-binding protein HuR, which is known to orchestrate an antiapoptoticcellular program, stimulates translation of XIAP mRNA through XIAP IRES. We further show that HuRbinds to XIAP IRES in vitroand in vivo, and stimulates recruitment of the XIAP mRNA into polysomes. Importantly, protection from the apoptosis-inducing agent etoposideby overexpressionof HuRrequires the presence of XIAP, suggesting that HuR-mediated cytoprotectionis partially executed through enhanced XIAP translation. Our data suggest that XIAP belongs to the HuR-regulated RNA operonof antiapoptoticgenes, which, along with Bcl-2, Mcl-1 and ProT¦Á, contributes to the regulation of cell survival. 1.ϸ°û¹ÌÓеÄcaspaseÒÖÖÆÎïXIAPµÄ±í´ïÖ÷ÒªÔÚµ°°×ºÏ³ÉµÄˮƽÉÏÊܵ½µ÷¿Ø¡£5¡äUTRÇøÓÐÒ»¸öÄÚ²¿ºËÌÇÌå½øÈëλµã£¨IRES£©½á¹¹Óò£¬ËüΪÔÚϸ°ûѹÁ¦Ìõ¼þÏ£¬XIAP mRNAñ×ÓÒÀÀµµÄ·ÒëÌṩÁËÖ§³Ö¡£ 2.±¾Ñо¿ÖУ¬ÎÒÃÇչʾÁËRNA½áºÏµ°°×HuR£¬Ò»ÖÖе÷ϸ°û¿¹µòÍö³ÌÐòµÄµ°°×£¬Í¨¹ýXIAPµÄIRES´Ì¼¤XIAP mRNAµÄ·Òë¡£½øÒ»²½Õ¹Ê¾ÁËHuRÔÚÌåÄÚÍâÓëXIAP IRESµÄ½áºÏ²¢´Ì¼¤ÕÐļXIAP mRNAÐγɶà¾ÛÌå¡£ 3.ÖØÒªµÄÊÇ£¬¹ý±í´ïHuRµÖ¿¹Òý·¢µòÍöµÄÊÔ¼ÁÒÀÍв´ß°ÐèÒªXIAPµÄ´æÔÚ£¬°µÊ¾HuR½éµ¼µÄϸ°û±£»¤×÷Óò¿·ÖµÄͨ¹ý¼ÓÇ¿XIAPµÄ·ÒëÀ´Ö´ÐС£ 4.ÎÒÃǵÄÊý¾Ý°µÊ¾XIAPÊôÓÚHuRµ÷½ÚµÄ¿¹µòÍö»ùÒòµÄRNA²Ù×Ý×Ó£¬ËüÓëBcl-2, Mcl-1 ºÍProT¦ÁÒ»ÆðÓÐÖúÓÚϸ°ûÉú´æµÄµ÷¿Ø¡£ ¸ü¶à×ÊÁÏÇëµÇ¼www.bioknow.cn |
» ²ÂÄãϲ»¶
ÄϾ©´óѧ»¯Ñ§µ÷¼Á
ÒѾÓÐ14È˻ظ´
Ò»Ö¾Ô¸±±¾©¹¤Òµ´óѧ£¬324·ÖÇóµ÷¼Á
ÒѾÓÐ6È˻ظ´
Ò»Ö¾Ô¸ºÓ±±¹¤Òµ´óѧ0817»¯¹¤278·ÖÇóµ÷¼Á
ÒѾÓÐ14È˻ظ´
Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
281Çóµ÷¼Á
ÒѾÓÐ6È˻ظ´
26É격×Ô¼ö
ÒѾÓÐ6È˻ظ´
Ò»Ö¾Ô¸¹þ¶û±õ¹¤Òµ´óѧ²ÄÁÏÓ뻯¹¤·½Ïò336·Ö
ÒѾÓÐ10È˻ظ´
Çóµ÷¼Á Óлú»¯Ñ§¿¼ÑÐ356·Ö
ÒѾÓÐ5È˻ظ´
300Çóµ÷¼Á£¬²ÄÁÏ¿ÆÑ§Ó¢Ò»Êý¶þ
ÒѾÓÐ10È˻ظ´
²ÄÁÏÓ뻯¹¤328·Öµ÷¼Á
ÒѾÓÐ7È˻ظ´
» ±¾Ö÷ÌâÏà¹ØÉ̼ÒÍÆ¼ö: (ÎÒÒ²ÒªÔÚÕâÀïÍÆ¹ã)
» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:
RNAÉÏÑùÁ¿µÄÎÊÌâ
ÒѾÓÐ8È˻ظ´
ÖпÆÔº¶¯ÎïËù£¨±±¾©£©¸Éϸ°ûÓëÃâÒßѧÑо¿×é¿ÆÑÐÈËÔ±ÕÐÆ¸
ÒѾÓÐ3È˻ظ´
ÖÆ±¸ÆøÌåÖеĴ̼¤ÐÔÆøÎ¶
ÒѾÓÐ7È˻ظ´
ÇóÖú½ðÊôרҵÎÄÏ׵öÃû´Ê·Ò룬·Ç³£¸Ðл
ÒѾÓÐ3È˻ظ´
»ùÓÚÐÂÐ͵°°×ÖʵÄÉúÎï´«¸ÐÆ÷·½ÃæÍ¶¸åÆÚ¿¯Ñ¡Ôñ
ÒѾÓÐ5È˻ظ´
¡¾help¡¿Çó·Òë Ó¢Ò뺺
ÒѾÓÐ4È˻ظ´
³¬ÉùÆÆËéϸ°û
ÒѾÓÐ21È˻ظ´
RNAµçÓ¾
ÒѾÓÐ10È˻ظ´
ͨ¹ýµ°°×ÖʹǼܻ¹ÔÈ«Ô×Ó×ø±ê
ÒѾÓÐ6È˻ظ´
ÎÊһϳ£¼ûµÄµ°°×ÖʵÄÖ±¾¶´óС·¶Î§
ÒѾÓÐ6È˻ظ´
ϸ¾úRNAÌáÈ¡
ÒѾÓÐ14È˻ظ´
RNAµçӾͼ ºÃÆæ¹Ö ʲôÔÒòѽ
ÒѾÓÐ18È˻ظ´
ÈçºÎÑéÖ¤RNAÊÇ·ñÓëµ°°×ÖÊ·¢ÉúÏ໥×÷Óã¿
ÒѾÓÐ8È˻ظ´
×õ²Ï×ÜRNAÌáÈ¡ÖУ¬µ°°×³éÌá²»¾¡
ÒѾÓÐ12È˻ظ´
¡¾·ÖÏí¡¿´óÁ¬»¯ÎïËùµ°°×ÖʺÍRNA¸´ºÏÎïÏ໥×÷ÓõÄÑо¿¹¤×÷È¡µÃнøÕ¹
ÒѾÓÐ10È˻ظ´
zlbmail
Ìú¸Ëľ³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 1 (Ó×¶ùÔ°)
- ½ð±Ò: 17342.1
- É¢½ð: 2
- Ìû×Ó: 1198
- ÔÚÏß: 498.1Сʱ
- ³æºÅ: 698031
- ×¢²á: 2009-02-07
- ÐÔ±ð: GG
- רҵ: ϵͳÉúÎïѧ
¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
| Â¥Ö÷£¬ÄãÊÇ×örnaµÄÂð£¿ÎÒÏëÇë½ÌÄãÈç¹ûÖªµÀÁËÒ»¸öµ°°×£¬Õâ¸öµ°°×ÊÇ¿ÉÒÔÓëmrna½áºÏµÄ£¬ÓÃʲô·½·¨¿ÉÒÔȥѰÕÒÓëÕâ¸öµ°°×½áºÏµÄmrna°¡£¿Ð»Ð»Á˹þ |
2Â¥2011-04-11 03:34:24














»Ø¸´´ËÂ¥