ÓÀÀû¼¯ÍÅ

»ùÒò×éËùRNA¼×»ù»¯±í¹Ûת¼×éѧÑо¿»ñÏ£Íû

¡¡¡¡2014Äê1Ô £¬ÓÀÀû¼¯ÍÅ»ùÒò×é±äÒìÓ뾫׼ÉúÎïҽѧʵÑéÊÒÑîÔ˹ðÑо¿×é £¬ÓëÓÀÀû¼¯ÍŶ¯ÎïÑо¿ËùÁõ·åÑо¿×éÏàÖú¿ªÕ¹µÄ¡°m6A¼×»ùתÒÆø¸´ºÏÎïÅжϡ±Ñо¿ £¬·¢Ã÷ÁËWTAP(wilms'tumour 1-associating protein) ÂÑ°××÷Ϊm6A¼×»ùתÒÆø¸´ºÏÎïµ÷¿ØÑÇ»ù £¬µ÷Àím6A¼×»ùתÒÆø´ß»¯ÑÇ»ùMETTL3ºÍMETTL14ÔÚϸ°ûÌåÄڵĶ¨Î»ºÍ»îÐÔ¡£Ñо¿Ð§¹ûMammalian WTAP Is a Regulatory Subunit of the RNA N6-Methyladenosine MethyltransferaseÔÚÏß½ÒÏþÓÚϸ°ûÉúÎïѧѧÊõÆÚ¿¯ Cell Research¡£ 

¡¡¡¡6-¼×»ùÏÙàÑßÊ¡¾N6-methyl-adenosine(m6A)¡¿ÊǸߵÈÉúÎïÖк¬Á¿×îΪ¸»ºñµÄÒ»ÖÖRNA¼×»ù»¯ÐÎʽ £¬Æ½¾ùÿһÌõmRNAº¬ÓÐ3-5¸ö £¬±£´æÓÚÊؾÉÐòÁÐRRACH£¨R=G ,A; H=A,C or U£©ÖС£µ«ºã¾ÃÒÔÀ´ £¬ÓÉÓÚȱ·¦¶Ôm6A¾ÙÐÐÓÐÓüì²âµÄÊÖÒÕÊֶκͶÔÐÞÊÎm6Aø¸´ºÏÎïµÄ·¢Ã÷ £¬ m6Aµ÷¿ØRNAÓÈÆäÊÇmRNAµÄÉúÎïѧ¹¦Ð§Éв»ÇåÎú¡£ 

¡¡¡¡ÑîÔ˹ðÑо¿×éÔÚÇ°ÆÚÑо¿ÖÐ £¬Í¨¹ýºÍÖ¥¼Ó¸ç´óѧºÎ´¨½ÌÊÚʵÑéÊÒÏàÖú £¬¼ÓÈë·¢Ã÷ÁËm6AÈ¥¼×»ù»¯Ã¸FTO(Jia et al. Nature Chemical Biology 2011)ºÍALKBH5(Zheng et al. Molecular Cell 2013),ÍØÕ¹ºÍ¸»ºñÁËRNA m6A¼×»ù»¯±í¹Ûת¼×éѧп´·¨ÓëÑо¿ÁìÓò£¨Niu et al. GPB 2013; Zheng et al. RNA Biology 2013£©¡£Ïà¹ØÓÚm6AÈ¥¼×»ù»¯Ã¸µÄ·¢Ã÷ £¬´ß»¯m6AÐγÉÒÔSAMΪ¼×»ù¹©ÌåµÄ¼×»ùתÒÆø¸´ºÏÎ~1000kDa£©µÄ·¢Ã÷Ï£Íû»ºÂý,70-kDA METTL3 (methyltransferase like 3)ÑÇ»ùÊÇÏÖÔÚΨһÒÑÖª×é·Ö¡£M6A¼×»ùתÒÆø¸´ºÏÎï¸÷×é·ÖµÄ·¢Ã÷ºÍÅжÏ £¬¶ÔÕ¹ÏÖRNA m6A¼×»ù»¯±í¹Ûת¼×éѧ¹¦Ð§ºÍµ÷¿Ø¼ÍÂɼ«ÆäÖ÷Òª¡£ 

¡¡¡¡±¾Ñо¿Ê¹ÓÃÉúÎﻯѧ¡¢Ï¸°û¡¢»ùÒò×éѧ¡¢ÉúÎïÐÅϢѧ¼°Ä£Ê½ÉúÎïµÈ¶àÌõÀíÊÖÒÕÊֶΠ£¬·¢Ã÷ÁËM6A¼×»ùתÒÆø¸´ºÏÎïÁíÍâÁ½¸öÖ÷ÒªÂÑ°×METTL14 (methyltransferase like 14)ºÍWTAP, METTL14 ¡¢WTAPºÍMETTL3ÔÚÌåÄÚÐÎÀÖ³ÉÄܸ´ºÏÎï £¬´ß»¯m6AÐγÉ¡£  

¡¡¡¡METTL3ºÍMETTL14¶¨Î»ÔÚmRNA¼Ó¹¤Ïà¹ØÑÇϸ°ûÆ÷nuclear speckleÉÏ £¬Æ䶨λÒÀÀµÓÚWTAP£»Ê¹ÓÃת¼×é¡¢PAR-CLIPÊÖÒÕÍŽáµÚ¶þ´ú²âÐòÊÖÒÕ £¬¿ÆÑÐÖ°Ô±·¢Ã÷METTL3ÒÀÀµÓÚWTAPÍŽáRNA £¬ mRNAÊǸü׻ùתÒÆø¸´ºÏÎïµÄÖ÷Òªµ×Îï¡£ÓëWTAPºÍMETTL3ÍŽáµÄ»ùÒò±£´æÑ¡ÔñÐÔ¼ô½ÓģʽµÄ¸Ä±ä,WTAPºÍMETTL3ÍŽáRNA MOTIFsÔÚÐòÁк;àÀëÓë¾­µäm6A¼×»ù»¯RRACH¸ß¶ÈÒ»ÖÂ,RNA´úлÏà¹Ø»ùÒòµÄ±í´ïºÍÑ¡ÔñÐÔ¼ô½Ó¶¼Êܵ½METTL3ºÍWTAPµÄµ÷Àí¡£ 

¡¡¡¡METTL3ºÍWTAP»ùÒòÇõ͵İßÂíÓãÅßÌ¥¶¼ÌåÏÖΪ×éÖ¯Æ÷¹Ù·Ö½âȱÏݺÍϸ°ûµòÍöÔöÌí¡£ÒÔÉÏÑо¿È·ÈÏÁËWTAP×÷Ϊµ÷¿ØÑÇ»ù £¬µ÷Àím6A¼×»ùתÒÆø´ß»¯ÑÇ»ùMETTL3/METTL14µÄϸ°ûÄÚ»îÐԺͶ¨Î»¡£ 

¡¡¡¡¸ÃÑо¿ÊÂÇéΪ½øÒ»²½Ñо¿m6AµÄÉúÎ﹦ЧºÍRNA±í¹ÛÒÅ´«ÌṩÁËÒÀ¾Ý £¬ÎªRNA¼×»ù»¯ÐÞÊÎ×÷ΪһÖÖ¾ßÓÐÖ÷ÒªÉúÎïѧµ÷¿Ø¹¦Ð§µÄ±í¹Ûת¼×éѧп´·¨ÌṩÁËÖ÷ÒªÖ¤¾Ý,´Ó¶øΪºóÐø´ÓRNA¼×»ù»¯ÕâһнǶÈÕö¿ª¶ñÐÔÖ×ÁöµÈÈËÀ༲²¡µÄ±¬·¢Éú³¤Ñо¿ÌṩÁËÀíÂÛÒÀ¾Ý¡£ 

¡¡¡¡¸ÃÏîÊÂÇé»ñµÃÁËÓÀÀû¼¯ÍÅ¡¢¿Æ¼¼²¿¡¢¹ú¼Ò×ÔÈ»¿Æѧ»ù½ðίµÄ×ÊÖú¡£  

¡¡¡¡ÂÛÎÄÁ´½Ó

ÓÀÀû¼¯ÍÅ¡¤yl(ÖйúÓÎ)¹Ù·½ÍøÕ¾

WTAPÍŽáRNA²¢ÕÐļMETTL3/METTL14¸´ºÏÎï¶ÔRRACHÌØÒìÐòö¾ÙÐм׻ù»¯ÐÞÊÎ

¸½¼þÏÂÔØ£º
¡¾ÍøÕ¾µØͼ¡¿¡¾sitemap¡¿