Znn3bq.jpeg
²é¿´: 537  |  »Ø¸´: 2
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

ÈýÒ¶²ÝÍõ

Ìú³æ (ÕýʽдÊÖ)

[ÇóÖú] Ó¢ÎÄ·­Òë³ÉÖÐÎÄ£¬¶àл¶àл£¡

Suppression of Wnt signaling by the miR-29 family is mediated by
demethylation of WIF-1 in non-small-cell lung cancer


Wnt inhibitory factor-1 (WIF-1) silencing induced by promoter hypermethylation is a common mechanism of aberrant activation of the Wnt signaling pathway in non-small-cell lung cancer (NSCLC). However, the activity of regulators associated with the methylation of the WIF-1 gene remains unclear.
Here, we investigated the role of three DNA methyltransferases (DNMT1, DNMT3A and DNMT3B) in
the expression of WIF-1. The three DNMTs were up-regulated in NSCLC tumor tissues and suppression
of DNMT3A and DNMT3B restored the expression of WIF-1 in NSCLC cells. The miR-29 family (miR-29a, -29b, and -29c), which negatively regulates DNMT3A and DNMT3B, was examined in association
with the Wnt/b-catenin signaling pathway. A positive correlation between the expression of WIF-1
and that of MiR-29s was observed in NSCLC tissues. Methylation-specific PCR and Western blotting indicated that miR-29s positively regulate WIF-1 expression by inhibiting the methylation of its promoter.
Furthermore, miR-29 overexpression downregulatedb-catenin expression, inhibited cell proliferation
and induced apoptosis. The expression of miR-29a and miR-29b was partially regulated by DNMT3A
and DNMT3B in a positive feedback loop. Taken together, our findings show that miR-29s suppress the
Wnt signaling pathway through demethylation of WIF-1 in NSCLC

» ²ÂÄãϲ»¶

ÎҺܰôµÎ
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ssssllllnnnn

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

Translator and Proofreader


¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
ÕæÇ¿±ØÊ¤: ½ð±Ò+3, good 2014-08-21 08:17:42
ÈýÒ¶²ÝÍõ: ½ð±Ò+10, ·­ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, Ì«¸ÐлÁË 2014-08-21 14:28:57
ÔÚ·ÇСϸ°û·Î°©£¬miR-29¼Ò×å³ÉԱͨ¹ý½éµ¼WIF-1È¥¼×»ù»¯¶øÒÖÖÆWntÐźÅ;¾¶
ͨ¹ýÆô¶¯×Ó³¬¼×»ù»¯Ê¹WntÒÖÖÆÒò×Ó£­1£¨WIF-1£©¾²Ä¬ÔÚ·ÇСϸ°û·Î°©£¨NSCLC£©ÖÐÊÇÒýÆðWntÐźÅͨ·Òì³£¼¤»îµÄÒ»ÖÖ³£¼û»úÖÆ¡£µ«ÊÇ£¬ÓëWIF-1»ùÒò¼×»ù»¯Ïà¹ØµÄµ÷½ÚÒò×ӵĻîÐÔÉв»Çå³þ¡£

ÔÚ´Ë£¬ÎÒÃÇÑо¿ÁËÈýÖÖDNA¼×»ù×ªÒÆÃ¸(DNMT1, DNMT3A and DNMT3B)ÔÚWIF-1±í´ïÖеÄ×÷Óá£ÔÚNSCLC×éÖ¯ÖÐÕâÈýÖÖDNMTsµÄ±í´ï±»ÏòÉϵ÷½Ú£¬ÔÚNSCLCϸ°ûÖÐÒÖÖÆDNMT3AºÍDNMT3BµÄ±í´ï¿ÉÒÔ»Ö¸´WIF-1µÄ±í´ï¡£miR-29¼Ò×å (miR-29a, -29b, and -29c)¶ÔDNMT3AºÍDNMT3BÓиºµ÷½Ú×÷Óà £¬ÎÒÃÇÑо¿ÁËmiR-29¼Ò×åÓëWnt/¦Â-cateninÐźÅͨ·֮¼äµÄÏ໥¹ØÏµ¡£½á¹û·¢ÏÖ£¬ÔÚNSCLC×éÖ¯£¬WIF-1±í´ïÓëmiR-29sÖ®¼ä´æÔÚÕýÏà¹Ø¡£¼×»ù»¯ÌØÒìÐÔPCR£¨¾ÛºÏøÁ´Ê½·´Ó¦£©ºÍWestern blotting£¨Õâ¸ö¾Í²»Ó÷­ÒëÁ˰ɣ¿£©±íÃ÷miR-29s¿ÉÒÔͨ¹ýÒÖÖÆWIF-1Æô¶¯×ӵļ׻ù»¯¶øÕýÏòµ÷½ÚÆä±í´ï¡£

¶øÇÒ£¬miR29¹ý±í´ï¿ÉÒÔϵ÷¦Â-cateninµÄ±í´ï£¬ÒÖÖÆÏ¸°ûÔöÖµ²¢ÓÕµ¼Ï¸°ûµòÍö¡£miR-29aºÍmiR-29bµÄ±í´ïÔòÔÚÒ»Õý·´À¡»ØÂ·ÖÐÊÜDNMT3AºÍDNMT3BµÄ²¿·Öµ÷½Ú¡£×ÜÖ®£¬ÎÒÃǵķ¢ÏÖ±íÃ÷£¬ÔÚNSCLC miR-29sͨ¹ýÒýÆðWIF-1È¥¼×»ù»¯¶øÒÖÖÆWntÐźÅ;¾¶¡£

×¢£º±¾ÈË·¢±í¹ý¶àƪWnt/¦Â-cateninµÄÏà¹ØÎÄÕ£¬È´´Ó²»Öª¦Â-catenin¸ÃÈçºÎ·­³ÉÖÐÎÄ£¬¸Õ²Å²éÁËÏ£¬ºÃÏñÓÐÈ˳ÆÖ®Îª¦Â£­Á¬»·ËØ£¬ÌýÉÏÈ¥ºÜ²»Ï°¹ß£¬Ò²²»ÖªÔÚ˵ʲô£¬ËùÒÔÎÒ½¨Òé²»Ó÷­³ÉÖÐÎÄÁË¡£
2Â¥2014-08-20 22:07:20
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÈýÒ¶²ÝÍõ

Ìú³æ (ÕýʽдÊÖ)

ÄúºÃ£¬Ò»ÌýÄú¾ÍÊǸßÊÖ£¬¿É²»¿ÉÒÔ°ïÎÒ·­ÒëºóÃæµÄ½á¹ûºÍÌÖÂÛ£¬½ð±Ò¶àÔùËÍ£¬Í¬Ê±ÎÊһϿɲ»¿ÉÒÔÁôÏÂÄúµÄQQ¶à¶àÇë½Ì£¿Ð»Ð»£¡

» ±¾Ìû¸½¼þ×ÊÔ´Áбí

  • »¶Ó­¼à¶½ºÍ·´À¡£ºÐ¡Ä¾³æ½öÌṩ½»Á÷ƽ̨£¬²»¶Ô¸ÃÄÚÈݸºÔð¡£
    ±¾ÄÚÈÝÓÉÓû§×ÔÖ÷·¢²¼£¬Èç¹ûÆäÄÚÈÝÉæ¼°µ½ÖªÊ¶²úȨÎÊÌ⣬ÆäÔðÈÎÔÚÓÚÓû§±¾ÈË£¬Èç¶Ô°æÈ¨ÓÐÒìÒ飬ÇëÁªÏµÓÊÏ䣺xiaomuchong@tal.com
  • ¸½¼þ 1 : 2013-9-4_µÚһƪͨѶ.pdf
  • 2014-08-21 14:32:16, 1.37 M
ÎҺܰôµÎ
3Â¥2014-08-21 14:36:37
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ ÈýÒ¶²ÝÍõ µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] µ÷¼Á +12 2261744733 2026-04-08 12/600 2026-04-08 23:55 by GouQ
[¿¼ÑÐ] 070300»¯Ñ§279Çóµ÷¼Á +13 ¹þ¹þ¹þ^_^ 2026-04-08 13/650 2026-04-08 22:29 by belle15
[¿¼ÑÐ] 0703»¯Ñ§Çóµ÷¼Á +16 ²»ÖªÃûµÄСئ 2026-04-08 16/800 2026-04-08 21:53 by ÍúÍú¶¹°ü
[¿¼ÑÐ] 368»¯Ñ§Çóµ÷¼Á +12 wwwwabcde 2026-04-07 13/650 2026-04-08 20:48 by LiuXingYuÐÇÐÇ
[¿¼ÑÐ] 304Çóµ÷¼Á +16 c297914 2026-04-05 17/850 2026-04-08 13:00 by grayjzr
[¿¼ÑÐ] 266Çóµ÷¼Á +18 ÑôÑôÍÛÈû 2026-04-07 18/900 2026-04-08 12:59 by grayjzr
[¿¼ÑÐ] 281Çóµ÷¼Á +10 Ò¬×ÓÄ¢¹½ 2026-04-06 10/500 2026-04-08 11:43 by zzucheup
[¿¼ÑÐ] ×÷ÔÔ330µ÷¼Á +3 ÎÒÒªÉϺÃѧ 2026-04-02 4/200 2026-04-07 19:54 by biomichael
[¿¼ÑÐ] ¸´ÊÔµ÷¼Á +9 ´ºÈÕÀ´ÐÅ- 2026-04-03 9/450 2026-04-07 15:17 by ¾¡Ë´Ò¢1
[¿¼ÑÐ] 286Çóµ÷¼Á +20 Faune 2026-04-06 20/1000 2026-04-07 11:33 by Ê«Óë×ÔÓÉ
[ÂÛÎÄͶ¸å] Decision: Revise for Editor»¹»áËÍÉóÂð 100+3 CccccccccFD 2026-04-04 5/250 2026-04-07 10:58 by ±±¾©À³ÒðÈóÉ«
[¿¼ÑÐ] 0854Çóµ÷¼Á +4 assdll 2026-04-05 4/200 2026-04-06 12:29 by ÖзÉÔº¿Õ¹ÜѧԺÑ
[¿¼ÑÐ] ¹¤¿Æ370Çóµ÷¼Á +3 äçÐļ弦µ° 2026-04-05 3/150 2026-04-06 10:55 by ÕâÊÇÒ»¸öÎÞÁĵÄê
[¿¼ÑÐ] 0855Çóµ÷¼Á²ÄÁÏ +11 ºìÌÒׯׯ 2026-04-04 12/600 2026-04-06 10:26 by À¶ÔÆË¼Óê
[¿¼ÑÐ] ²ÄÁÏ»¯¹¤306·ÖÕÒºÏÊʵ÷¼Á +14 ²×º£ÇáÖÛe 2026-04-04 14/700 2026-04-05 09:53 by ÖìÔÆ»¢202
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©»¯¹¤´óѧ£¬³õÊԳɼ¨350Çóµ÷¼Á +9 ÑØ°¶?±´¿Ç 2026-04-04 14/700 2026-04-05 01:09 by ÑØ°¶?±´¿Ç
[¿¼ÑÐ] 274Çóµ÷¼Á +9 ˳Àí³ÉÕÅ 2026-04-03 10/500 2026-04-03 15:10 by °¡¿¡£¡
[¿¼ÑÐ] 081200-11408-276ѧ˶Çóµ÷¼Á +5 ´Þwj 2026-04-03 5/250 2026-04-03 15:06 by arrow8852
[¿¼ÑÐ] 313Çóµ÷¼Á +3 ¡«Î¢Î¢Á¹¡« 2026-04-03 3/150 2026-04-03 11:25 by à£à£à£0119
[¿¼ÑÐ] 295Çóµ÷¼Á +7 Ô¸ÂÃ;ÓÀԶ̹Ȼ 2026-04-02 7/350 2026-04-03 08:22 by fangshan711
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û