Baidu
map

Leukemia:LSD1有望称为治愈MDS相关白血病的靶点!

2018-01-15 MedSci MedSci原创

NCD38能对异常情况下被LSD1沉默的造血调节因子的超强启动子去抑制,从而延迟白血病进程,发挥抗白血病的作用,抑制MDS相关白血病的不良预后。

组蛋白修饰是调节血液系统自我更新和分化主要方式。表观遗传失调会造成髓系恶性疾病,例如骨髓异常增生综合征和急性髓系白血病。而表观遗传修饰的主要方式是组蛋白的转录后调控。组蛋白乙酰化通常能够激活转录,然而组蛋白的赖氨酸甲基化对基因表达促进和抑制主要由特异性的赖氨酸残基以及甲基组分的数量决定。并且在基因组不同位置的组蛋白有不同的意义。例如,H3K4me3表示靠近转录起始位点的激活启动子,然而H3K4me1表示增强元件与基因本体距离较远。而H3K4me2既能标记启动子也能标记增强子。

LSD1(Lysine-specific demethylase 1)是最早发现的组蛋白赖氨酸去甲基化酶,并且能够对H3K4me1和H3K4me2去甲基化,但是不能对H3K4me3去甲基化。LSD1能够分别与HDAC1或者HDAC1,以及转录因子共同抑制因子RE1一起形成转录抑制复合体。大鼠造血系细胞缺失Lsd1可导致Lsd1靶向的基因H3K27ac水平上升。并且在多种白血病中,LSD1的表达水平均发生明显的上升。

LSD1有望成为治愈特异基因异常的急性白血病的靶位点。新LSD1抑制剂,NCD25和NCD38,在一定的浓度范围内能够抑制MLL-AF9白血病,红白血病,巨核细胞白血病和骨髓异常增生综合征细胞的生长从而促进正常造血过程。NCD25和NCD38能够协助髓系细胞发育,并且抑制MDS和AML原癌过程,以及阻碍62种白血病相关基因在多种白血病中表达上升。

NCD38能提高LSD1标记基因和新激活的约500个超级增强子的H3K27ac水平。红白血病的白细胞分化过程中富集的基因主要由超级增强子激活。有11个基因,包括GF1,ERG但是不包括CEBPA,被认为是有LSD1修饰的超级增强子激活的。这些基因的超级增强子在诱导转录和髓系分化时已经提前被激活。在敲除GFI1的白血病细胞中, NCD38能延迟髓系的分化。在体内仅仅使用NCD38就能够引起原始伴复杂核型的MDS相关白血病细胞死亡。总之,NCD38能对异常情况下被LSD1沉默的造血调节因子的超强启动子去抑制,从而延迟白血病进程,发挥抗白血病的作用,抑制MDS相关白血病的不良预后。

原文出处:Sugino N, Kawahara M, Tatsumi G, et al. A novel LSD1 inhibitor NCD38 ameliorates MDS-related leukemia with complex karyotype by attenuating leukemia programs via activating super-enhancers[J]. Leukemia, 2017.doi:10.1038/leu.2017.59

本文由梅斯医学(MedSci)原创编译整理,转载需授权!


版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (5)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1842790, encodeId=d62c1842e90f9, content=<a href='/topic/show?id=9f061142249' target=_blank style='color:#2F92EE;'>#MDS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11422, encryptionId=9f061142249, topicName=MDS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=80a244, createdName=d830372, createdTime=Sat Oct 13 12:29:00 CST 2018, time=2018-10-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1669220, encodeId=f23516692203e, content=<a href='/topic/show?id=485e114288c' target=_blank style='color:#2F92EE;'>#MDS相关白血病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11428, encryptionId=485e114288c, topicName=MDS相关白血病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2e6526523472, createdName=yankaienglish, createdTime=Sun Jan 21 02:29:00 CST 2018, time=2018-01-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=282839, encodeId=1bd32828393a, content=学习了谢谢分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Sun Jan 28 09:36:03 CST 2018, time=2018-01-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1442754, encodeId=7f371442e5462, content=<a href='/topic/show?id=df5b1106429' target=_blank style='color:#2F92EE;'>#LSD1#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11064, encryptionId=df5b1106429, topicName=LSD1)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=99ed4977335, createdName=ms1692810954239974, createdTime=Wed Jan 17 10:29:00 CST 2018, time=2018-01-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=279023, encodeId=b6532e9023b7, content=学习了谢谢分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Tue Jan 16 09:11:03 CST 2018, time=2018-01-16, status=1, ipAttribution=)]
    2018-10-13 d830372
  2. [GetPortalCommentsPageByObjectIdResponse(id=1842790, encodeId=d62c1842e90f9, content=<a href='/topic/show?id=9f061142249' target=_blank style='color:#2F92EE;'>#MDS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11422, encryptionId=9f061142249, topicName=MDS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=80a244, createdName=d830372, createdTime=Sat Oct 13 12:29:00 CST 2018, time=2018-10-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1669220, encodeId=f23516692203e, content=<a href='/topic/show?id=485e114288c' target=_blank style='color:#2F92EE;'>#MDS相关白血病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11428, encryptionId=485e114288c, topicName=MDS相关白血病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2e6526523472, createdName=yankaienglish, createdTime=Sun Jan 21 02:29:00 CST 2018, time=2018-01-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=282839, encodeId=1bd32828393a, content=学习了谢谢分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Sun Jan 28 09:36:03 CST 2018, time=2018-01-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1442754, encodeId=7f371442e5462, content=<a href='/topic/show?id=df5b1106429' target=_blank style='color:#2F92EE;'>#LSD1#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11064, encryptionId=df5b1106429, topicName=LSD1)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=99ed4977335, createdName=ms1692810954239974, createdTime=Wed Jan 17 10:29:00 CST 2018, time=2018-01-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=279023, encodeId=b6532e9023b7, content=学习了谢谢分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Tue Jan 16 09:11:03 CST 2018, time=2018-01-16, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1842790, encodeId=d62c1842e90f9, content=<a href='/topic/show?id=9f061142249' target=_blank style='color:#2F92EE;'>#MDS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11422, encryptionId=9f061142249, topicName=MDS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=80a244, createdName=d830372, createdTime=Sat Oct 13 12:29:00 CST 2018, time=2018-10-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1669220, encodeId=f23516692203e, content=<a href='/topic/show?id=485e114288c' target=_blank style='color:#2F92EE;'>#MDS相关白血病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11428, encryptionId=485e114288c, topicName=MDS相关白血病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2e6526523472, createdName=yankaienglish, createdTime=Sun Jan 21 02:29:00 CST 2018, time=2018-01-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=282839, encodeId=1bd32828393a, content=学习了谢谢分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Sun Jan 28 09:36:03 CST 2018, time=2018-01-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1442754, encodeId=7f371442e5462, content=<a href='/topic/show?id=df5b1106429' target=_blank style='color:#2F92EE;'>#LSD1#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11064, encryptionId=df5b1106429, topicName=LSD1)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=99ed4977335, createdName=ms1692810954239974, createdTime=Wed Jan 17 10:29:00 CST 2018, time=2018-01-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=279023, encodeId=b6532e9023b7, content=学习了谢谢分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Tue Jan 16 09:11:03 CST 2018, time=2018-01-16, status=1, ipAttribution=)]
    2018-01-28 大爰

    学习了谢谢分享!!

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1842790, encodeId=d62c1842e90f9, content=<a href='/topic/show?id=9f061142249' target=_blank style='color:#2F92EE;'>#MDS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11422, encryptionId=9f061142249, topicName=MDS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=80a244, createdName=d830372, createdTime=Sat Oct 13 12:29:00 CST 2018, time=2018-10-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1669220, encodeId=f23516692203e, content=<a href='/topic/show?id=485e114288c' target=_blank style='color:#2F92EE;'>#MDS相关白血病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11428, encryptionId=485e114288c, topicName=MDS相关白血病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2e6526523472, createdName=yankaienglish, createdTime=Sun Jan 21 02:29:00 CST 2018, time=2018-01-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=282839, encodeId=1bd32828393a, content=学习了谢谢分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Sun Jan 28 09:36:03 CST 2018, time=2018-01-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1442754, encodeId=7f371442e5462, content=<a href='/topic/show?id=df5b1106429' target=_blank style='color:#2F92EE;'>#LSD1#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11064, encryptionId=df5b1106429, topicName=LSD1)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=99ed4977335, createdName=ms1692810954239974, createdTime=Wed Jan 17 10:29:00 CST 2018, time=2018-01-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=279023, encodeId=b6532e9023b7, content=学习了谢谢分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Tue Jan 16 09:11:03 CST 2018, time=2018-01-16, status=1, ipAttribution=)]
  5. [GetPortalCommentsPageByObjectIdResponse(id=1842790, encodeId=d62c1842e90f9, content=<a href='/topic/show?id=9f061142249' target=_blank style='color:#2F92EE;'>#MDS#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11422, encryptionId=9f061142249, topicName=MDS)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=80a244, createdName=d830372, createdTime=Sat Oct 13 12:29:00 CST 2018, time=2018-10-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1669220, encodeId=f23516692203e, content=<a href='/topic/show?id=485e114288c' target=_blank style='color:#2F92EE;'>#MDS相关白血病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11428, encryptionId=485e114288c, topicName=MDS相关白血病)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2e6526523472, createdName=yankaienglish, createdTime=Sun Jan 21 02:29:00 CST 2018, time=2018-01-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=282839, encodeId=1bd32828393a, content=学习了谢谢分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=102, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Sun Jan 28 09:36:03 CST 2018, time=2018-01-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1442754, encodeId=7f371442e5462, content=<a href='/topic/show?id=df5b1106429' target=_blank style='color:#2F92EE;'>#LSD1#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11064, encryptionId=df5b1106429, topicName=LSD1)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=99ed4977335, createdName=ms1692810954239974, createdTime=Wed Jan 17 10:29:00 CST 2018, time=2018-01-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=279023, encodeId=b6532e9023b7, content=学习了谢谢分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200816/e4675a86ea694f12b82202b320dc2654/12f6b900498349e994ce8f516a584d6a.jpg, createdBy=09431951290, createdName=大爰, createdTime=Tue Jan 16 09:11:03 CST 2018, time=2018-01-16, status=1, ipAttribution=)]
    2018-01-16 大爰

    学习了谢谢分享!!

    0

相关资讯

淀粉样假说之外,还有哪些阿兹海默病疗法值得关注?

阿兹海默病的新药研发是一片凶险的领域。据估计,这一领域内的新药研发失败率为99%,甚至高于癌症新药的失败率。其背后的原因之一,在于我们还没有完全理解这种疾病。神经科学领域有一项旷日持久的争论:一方面,科学家们相信靶向淀粉样蛋白依旧是治疗阿兹海默病的最佳方式;另一方面,近期挫折不断的临床研发则让怀疑主义者心生将“淀粉样蛋白假说”束之高阁的念头。

Nat Commun:Nature子刊 压力会让大脑基因的表观遗传发生改变

近日,Nature Communications杂志上的一项研究发表了一种此前在动物机体中功能尚未明确的DNA修饰:A(腺嘌呤)甲基化。研究人员认为,在压力条件下大脑似乎更容易出现这种腺嘌呤甲基化,并且可能在神经精神疾病中扮演者重要角色。

Oncogene:组蛋白甲基转移酶KMT2D能够通过表观激活LIFR和KLF4来维持前列腺癌的形成和转移

表观修饰因子的异常在前列腺癌(PCa)中越来越成为促进其形成的因素。组蛋白甲基转移酶KMT2D在各种各样肿瘤中常常出现作为异常的修饰因子,并且在PCa中的角色仍旧未知。更多的是,在中国病人中KMT2D的变异和它的下游信号途径以及靶标所知甚少。最近,有研究人员通过利用靶向疾病的测序,分析了32个与PCa显著相关的基因的突变谱,发现KMT2D在中国病人中高度变异(63.04%,29/46)。更多的是,

GENOME BIOL:同卵双生子可能比你想象中更相似

长期以来,研究人员一直对同卵双胞胎保持着巨大的热情,并用其来探索遗传性,和表型变异的表观遗传学影响。已有的研究认为,同卵双胞胎的表型和表观遗传上的相似性很大程度上归因于它们的遗传一致性。

每年880万人死于癌症 跨越癌症死亡线

梳理2017年年度国际上抗癌新进展,以飨读者。

Nat Commun:拷贝数而非表观遗传改变是肿瘤印记甲基化的关键

既往研究认为印记畸变在肿瘤中十分常见。为了了解印记在癌症发生发展中的作用,研究人员对280多个癌细胞株的拷贝数和甲基化进行了表征,并在原发性肿瘤中证实了研究人员的发现。印迹差异甲基化区域(DMR)以顺式调节相邻转录物亲本来源的单等位基因的表达。与可能易于发生高甲基化的单拷贝CpG岛不同,印记的DMRs可能在肿瘤发生过程中松动或增加甲基化。本研究中,研究人员发现,印记的DMR的甲基化谱通常不代表真正

Baidu
map
Baidu
map
Baidu
map