Molecular Cancer:中南大学熊炜团队发现环状RNA促进鼻咽癌恶性进展新机制

2022-03-05 “生物世界”公众号 “生物世界”公众号

鼻咽癌是我国华南地区常见的头颈部恶性肿瘤,发病隐匿,早期很难发现,大部分患者就诊时已经发生了肿瘤转移。

鼻咽癌是我国华南地区常见的头颈部恶性肿瘤,发病隐匿,早期很难发现,大部分患者就诊时已经发生了肿瘤转移。环状RNA(circRNA)是近年来受到广泛关注的一类非编码RNA,越来越多的研究发现环状RNA广泛参与了鼻咽癌的发病过程

2022年2月28日,中南大学肿瘤研究所熊炜教授团队在 Molecular Cancer 期刊发表了题为:Splicing factor derived circular RNA circCAMSAP1 accelerates nasopharyngeal carcinoma tumorigenesis via a SERPINH1/c-Myc positive feedback loop 的研究论文。

该研究发现,环状RNA circCAMSAP1在鼻咽癌组织中高表达,并通过SERPINH1/c-Myc反馈环路促进鼻咽癌的恶性进展。

该研究首先对鼻咽癌组织样本RNA-Seq数据进行深入分析,发现circCAMSAP1在鼻咽癌组织中高表达。细胞和动物模型证实circCAMSAP1可促进鼻咽癌细胞的增殖、侵袭和迁移;利用蛋白质组学策略分析发现并验证分子伴侣SERPINH1是circCAMSAP1调控的下游蛋白;circCAMSAP1可以结合到SERPINH1 mRNA的3’UTR区,增强其稳定性,促进SERPINH1蛋白表达;SERPINH1结合c-Myc后抑制c-Myc发生泛素化降解,使c-Myc在细胞核中积累,发挥转录因子功能,促进一系列增殖和转移相关的癌基转录,最终促进鼻咽癌增殖和侵袭转移。

该研究还发现c-Myc转录的下游基因中,包含CAMSAP1和剪接因子SRSF10,c-Myc一方面促进CAMSAP1基因的转录,也通过上调SRSF10促进CAMSAP1前体RNA剪接加工成circCAMSAP1,这可能是circCAMSAP1在鼻咽癌中高表达的原因。

综上所述,该研究揭示了circCAMSAP1通过SERPINH1/c-Myc轴促进鼻咽癌增殖和转移的分子机制,还发现了c-Myc/SRSF10协同促进circCAMSAP1表达的反馈环路,拓展了我们对环状RNA在鼻咽癌发生发展中作用的认识。为鼻咽癌的早期诊断和潜在治疗提供了候选的分子标记和靶点。

原始出处:

Wang, Y., Yan, Q., Mo, Y. et al. Splicing factor derived circular RNA circCAMSAP1 accelerates nasopharyngeal carcinoma tumorigenesis via a SERPINH1/c-Myc positive feedback loop. Mol Cancer 21, 62 (2022). https://doi.org/10.1186/s12943-022-01502-2.

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    2022-03-06 carrotlyl

    极大丰富了团队国自然的研究基础

    0

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    2022-03-06 ms5000000518166734

    学习学习学习学习学习学习学习学习学习学习学习学习学习学习学习学习学习学习

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    2022-03-06 4nfu

    写评论

    0

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    2022-03-06 4nfu

    学习了

    0

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    2022-03-05 yangchou

    好文章,谢谢分享。

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1199866, encodeId=ec9c11998665c, content=极大丰富了团队国自然的研究基础, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210127/50a003c4097845e182c08afd64d8a509/bd766dfebe9c40e0bca2dae964601bdc.jpg, createdBy=22de5454917, createdName=carrotlyl, createdTime=Sun Mar 06 10:47:34 CST 2022, time=2022-03-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1199881, encodeId=babb119988145, content=学习学习学习学习学习学习学习学习学习学习学习学习学习学习学习学习学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f03a5433387, createdName=ms5000000518166734, createdTime=Sun Mar 06 11:47:59 CST 2022, time=2022-03-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1199817, encodeId=b447119981e1a, content=写评论 , beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=da196447565, createdName=4nfu, createdTime=Sun Mar 06 07:59:14 CST 2022, time=2022-03-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1199816, encodeId=d8f3119981672, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=da196447565, createdName=4nfu, createdTime=Sun Mar 06 07:58:36 CST 2022, time=2022-03-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1199755, encodeId=68a21199e552d, content=好文章,谢谢分享。, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJlfgys76DEiaNtbYo2re3ibjrUPTRibEXRyFwAB4aAGiave842S0FQDf0wAoaH226NiaSoPPDzhndsf1g/132, createdBy=88b489038, createdName=yangchou, createdTime=Sat Mar 05 21:55:15 CST 2022, time=2022-03-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1199718, encodeId=43901199e1866, content=认真学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6EF3hKja8nER8RMzxQdria9eCYFhgLTLsDOeqnvIYdeLDz5eP6EnicLuE5gibiawgno4zUA0jAR7Nbtp2llQ9fs3Mk/0, createdBy=278f1986883, createdName=医鸣惊人, createdTime=Sat Mar 05 20:04:55 CST 2022, time=2022-03-05, status=1, ipAttribution=)]
    2022-03-05 医鸣惊人

    认真学习了

    0

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