Cell Death Differ:PGC7通过重塑关键发育转录因子的DNA甲基化模式促进肿瘤的致癌性去分化

2021-02-02 xiaozeng MedSci原创

在发育过程中,低分化的癌细胞通常与其谱系前体细胞表现出相似的表型。而正常器官发育过程中的基因表达特征在癌细胞中也被重新激活,这在很大程度上也促进了肿瘤的恶性转化。

在发育过程中,低分化的癌细胞通常与其谱系前体细胞表现出相似的表型。而正常器官发育过程中的基因表达特征在癌细胞中也被重新激活,这在很大程度上也促进了肿瘤的恶性转化。然而,相关的潜在分子事件仍然未知。

肝细胞癌(HCC)作为全球范围内最常见的预后不良的癌症之一。保留肝前体信号的分化较差的肝癌通常具有高度侵袭性,且临床预后较差。既往研究显示,表达CK7或CK19等双能肝祖细胞标志物的HCC的预后极差,这也说明,在HCC的恶性转化过程中,调控肿瘤细胞谱系逆转的机制尤为重要。


在该研究中,基于对体外肝细胞分化模型的分析,研究人员发现母源因子PGC7(也称为DPPA3,STELLA)的表达水平与肝脏发育、HCC谱系逆转以及肿瘤分化息息相关。

PGC7的表达与肝脏发育和肝癌致癌性去分化相关

在肝细胞成熟过程中,PGC7的表达水平下调,并从分化能力良好的肝细胞逐渐分化为分化程度较低的肝细胞。全基因组甲基化测序发现,PGC7可以引起发育相关基因的启动子去甲基化。基于信号通路的网络分析表明,PGC7的下游靶标可能形成与发育转录因子激活相关的网络。


进一步的研究显示,PGC7的过表达赋予了HCC细胞祖细胞样特征。机制研究显示,PGC7能够阻止UHRF1的核转运,并促进GLI1和MYCN的启动子去甲基化,二者均是HCC自我更新和分化的重要调节因子。

PGC7/GLI1/MYCN通路在HCC癌性去分化中的临床意义

敲除或抑制GLI1可有效的下调MYCN的表达,消除PGC7的作用,并使HCC细胞对索拉非尼(sorafenib)治疗敏感。此外,研究人员发现,临床HCC患者中PGC7与GLI1/MYCN以及谱系分化标记之间存在着显著相关性。PGC7的表达可能通过促进关键发育转录因子的启动子去甲基化而将HCC推向“去分化的”祖细胞谱系状态。


总而言之,该研究结果显示,抑制PGC7/GLI1/MYCN信号通路或可逆转分化状态差的HCC,并为HCC患者提供新的治疗策略。


原始出处:

Yan, Q., Zhang, Y., Fang, X. et al. PGC7 promotes tumor oncogenic dedifferentiation through remodeling DNA methylation pattern for key developmental transcription factors. Cell Death Differ (26 January 2021).

 

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    2021-05-30 isabellayj
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    2021-03-20 mjldent
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    2021-12-30 维他命
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  5. [GetPortalCommentsPageByObjectIdResponse(id=1784246, encodeId=bff81e84246d5, content=<a href='/topic/show?id=f01159527d' target=_blank style='color:#2F92EE;'>#Differ#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5952, encryptionId=f01159527d, topicName=Differ)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d784426, createdName=isabellayj, createdTime=Sun May 30 16:15:10 CST 2021, time=2021-05-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1747424, encodeId=9a651e4742461, content=<a href='/topic/show?id=832e93345c3' target=_blank style='color:#2F92EE;'>#转录#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93345, encryptionId=832e93345c3, topicName=转录)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=58df35929710, createdName=mjldent, createdTime=Sat Mar 20 01:15:10 CST 2021, time=2021-03-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1962452, encodeId=6cbd1962452c8, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Thu Dec 30 21:15:10 CST 2021, time=2021-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1872148, encodeId=b88f18e21485b, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Sun Jun 13 00:15:10 CST 2021, time=2021-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1347527, encodeId=0df4134e5279d, content=<a href='/topic/show?id=88713e938c1' target=_blank style='color:#2F92EE;'>#发育#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37938, encryptionId=88713e938c1, topicName=发育)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f4c124, createdName=neurowu, createdTime=Thu Feb 04 12:15:10 CST 2021, time=2021-02-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1371021, encodeId=451f13e1021bc, content=<a href='/topic/show?id=9c39864991e' target=_blank style='color:#2F92EE;'>#致癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86499, encryptionId=9c39864991e, topicName=致癌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2c25323, createdName=jambiya, createdTime=Thu Feb 04 12:15:10 CST 2021, time=2021-02-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1531721, encodeId=a63a1531e211a, content=<a href='/topic/show?id=770e5e9457' target=_blank style='color:#2F92EE;'>#Death#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5794, encryptionId=770e5e9457, topicName=Death)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=32e312278742, createdName=cy0328, createdTime=Thu Feb 04 12:15:10 CST 2021, time=2021-02-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1537501, encodeId=3fab153e5011a, content=<a href='/topic/show?id=798a93348bb' target=_blank style='color:#2F92EE;'>#转录因子#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93348, encryptionId=798a93348bb, topicName=转录因子)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b8c712868269, createdName=lanyan20020090, createdTime=Thu Feb 04 12:15:10 CST 2021, time=2021-02-04, status=1, ipAttribution=)]
    2021-02-04 neurowu
  6. [GetPortalCommentsPageByObjectIdResponse(id=1784246, encodeId=bff81e84246d5, content=<a href='/topic/show?id=f01159527d' target=_blank style='color:#2F92EE;'>#Differ#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5952, encryptionId=f01159527d, topicName=Differ)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d784426, createdName=isabellayj, createdTime=Sun May 30 16:15:10 CST 2021, time=2021-05-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1747424, encodeId=9a651e4742461, content=<a href='/topic/show?id=832e93345c3' target=_blank style='color:#2F92EE;'>#转录#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93345, encryptionId=832e93345c3, topicName=转录)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=58df35929710, createdName=mjldent, createdTime=Sat Mar 20 01:15:10 CST 2021, time=2021-03-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1962452, encodeId=6cbd1962452c8, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Thu Dec 30 21:15:10 CST 2021, time=2021-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1872148, encodeId=b88f18e21485b, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Sun Jun 13 00:15:10 CST 2021, time=2021-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1347527, encodeId=0df4134e5279d, content=<a href='/topic/show?id=88713e938c1' target=_blank style='color:#2F92EE;'>#发育#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37938, encryptionId=88713e938c1, topicName=发育)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f4c124, createdName=neurowu, createdTime=Thu Feb 04 12:15:10 CST 2021, time=2021-02-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1371021, encodeId=451f13e1021bc, content=<a href='/topic/show?id=9c39864991e' target=_blank style='color:#2F92EE;'>#致癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86499, encryptionId=9c39864991e, topicName=致癌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2c25323, createdName=jambiya, createdTime=Thu Feb 04 12:15:10 CST 2021, time=2021-02-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1531721, encodeId=a63a1531e211a, content=<a href='/topic/show?id=770e5e9457' target=_blank style='color:#2F92EE;'>#Death#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5794, encryptionId=770e5e9457, topicName=Death)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=32e312278742, createdName=cy0328, createdTime=Thu Feb 04 12:15:10 CST 2021, time=2021-02-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1537501, encodeId=3fab153e5011a, content=<a href='/topic/show?id=798a93348bb' target=_blank style='color:#2F92EE;'>#转录因子#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93348, encryptionId=798a93348bb, topicName=转录因子)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b8c712868269, createdName=lanyan20020090, createdTime=Thu Feb 04 12:15:10 CST 2021, time=2021-02-04, status=1, ipAttribution=)]
    2021-02-04 jambiya
  7. [GetPortalCommentsPageByObjectIdResponse(id=1784246, encodeId=bff81e84246d5, content=<a href='/topic/show?id=f01159527d' target=_blank style='color:#2F92EE;'>#Differ#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5952, encryptionId=f01159527d, topicName=Differ)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d784426, createdName=isabellayj, createdTime=Sun May 30 16:15:10 CST 2021, time=2021-05-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1747424, encodeId=9a651e4742461, content=<a href='/topic/show?id=832e93345c3' target=_blank style='color:#2F92EE;'>#转录#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93345, encryptionId=832e93345c3, topicName=转录)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=58df35929710, createdName=mjldent, createdTime=Sat Mar 20 01:15:10 CST 2021, time=2021-03-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1962452, encodeId=6cbd1962452c8, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Thu Dec 30 21:15:10 CST 2021, time=2021-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1872148, encodeId=b88f18e21485b, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Sun Jun 13 00:15:10 CST 2021, time=2021-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1347527, encodeId=0df4134e5279d, content=<a href='/topic/show?id=88713e938c1' target=_blank style='color:#2F92EE;'>#发育#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37938, encryptionId=88713e938c1, topicName=发育)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f4c124, createdName=neurowu, createdTime=Thu Feb 04 12:15:10 CST 2021, time=2021-02-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1371021, encodeId=451f13e1021bc, content=<a href='/topic/show?id=9c39864991e' target=_blank style='color:#2F92EE;'>#致癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=86499, encryptionId=9c39864991e, topicName=致癌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2c25323, createdName=jambiya, createdTime=Thu Feb 04 12:15:10 CST 2021, time=2021-02-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1531721, encodeId=a63a1531e211a, content=<a href='/topic/show?id=770e5e9457' target=_blank style='color:#2F92EE;'>#Death#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5794, encryptionId=770e5e9457, topicName=Death)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=32e312278742, createdName=cy0328, createdTime=Thu Feb 04 12:15:10 CST 2021, time=2021-02-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1537501, encodeId=3fab153e5011a, content=<a href='/topic/show?id=798a93348bb' target=_blank style='color:#2F92EE;'>#转录因子#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93348, encryptionId=798a93348bb, topicName=转录因子)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b8c712868269, createdName=lanyan20020090, createdTime=Thu Feb 04 12:15:10 CST 2021, time=2021-02-04, status=1, ipAttribution=)]
    2021-02-04 cy0328
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