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Nature Commun:靶向细胞骨架抑制肿瘤转移新发现

2015-06-23 佚名 生物谷

近日,来自美国的华人科学家在国际学术期刊nature communication在线发表了一项最新研究进展,他们利用高通量筛选的方法发现了一些小分子能够特异性靶向参与肌动蛋白组装的关键蛋白--Fascin,同时证明抑制Fascin的活性能够阻断丝状伪足形成,抑制肿瘤的迁移和侵袭。 肿瘤转移的一个关键步骤是肿瘤细胞的迁移和侵袭,这一过程的实现需要细胞内细胞骨架蛋白的重新排列。丝状伪足是参与肌动蛋白

近日,来自美国的华人科学家在国际学术期刊nature communication在线发表了一项最新研究进展,他们利用高通量筛选的方法发现了一些小分子能够特异性靶向参与肌动蛋白组装的关键蛋白--Fascin,同时证明抑制Fascin的活性能够阻断丝状伪足形成,抑制肿瘤的迁移和侵袭。

肿瘤转移的一个关键步骤是肿瘤细胞的迁移和侵袭,这一过程的实现需要细胞内细胞骨架蛋白的重新排列。丝状伪足是参与肌动蛋白细胞骨架突起形成的一种重要结构,其作用相当于细胞的感受器官,能够与细胞外微环境进行信息交流,同时还参与一些基础的细胞功能如细胞黏附,扩展以及在三维环境中迁移。

之前一些研究已经发现丝状伪足在肿瘤细胞侵袭的起始阶段可能发挥主要作用,癌细胞可利用丝状伪足向器官表面粘附和侵袭,而Fascin是丝状伪足形成过程中参与肌动蛋白组装的一个重要蛋白,因此研究人员认为靶向Fascin开发小分子药物或许是抑制癌症转移的一种潜在方法。

在该项研究中,研究人员利用高通量筛选的方法,发现了一些小分子能够抑制Fascin的肌动蛋白组装活性,随后,研究人员将目光集中在其中一个小分子抑制剂上,证明这种小分子抑制剂能够特异性阻断丝状伪足的形成,进而抑制肿瘤细胞在体外的迁移和侵袭,以及肿瘤细胞在体内的转移。

在对实验结果进行充分验证和分析之后,研究人员认为具有靶向特性的Fascin抑制剂可能对于癌症治疗具有潜在治疗效果,这项研究对于转移性癌症的治疗具有一定意义。

原始出处:

Fang-Ke Huang, Shaoqin Han, Bowen Xing, Jianyun Huang, Bingqian Liu, Francois Bordeleau, Cynthia A. Reinhart-King, J. Jillian Zhang & Xin-Yun Huang.Targeted inhibition of fascin function blocks tumour invasion and metastatic colonization.Nature Commuications, June 17, 2015.

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    2015-10-04 liuli5079
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    2016-04-07 liye789132251
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  6. [GetPortalCommentsPageByObjectIdResponse(id=2086800, encodeId=e5f8208680049, content=<a href='/topic/show?id=490750196b' target=_blank style='color:#2F92EE;'>#COMMUN#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5019, encryptionId=490750196b, topicName=COMMUN)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7931272, createdName=liuli5079, createdTime=Sun Oct 04 02:05:00 CST 2015, time=2015-10-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2076654, encodeId=6a1420e66549b, content=<a href='/topic/show?id=4c00549381e' target=_blank style='color:#2F92EE;'>#抑制肿瘤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54938, encryptionId=4c00549381e, topicName=抑制肿瘤)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4736501, createdName=xiaoyang_ambs, createdTime=Tue Sep 29 14:05:00 CST 2015, time=2015-09-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880703, encodeId=1d6b1880e03b7, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Thu Apr 07 23:05:00 CST 2016, time=2016-04-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1921115, encodeId=a680192111588, content=<a href='/topic/show?id=6bfa58133ef' target=_blank style='color:#2F92EE;'>#新发现#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58133, encryptionId=6bfa58133ef, topicName=新发现)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=644e456, createdName=vera_1203, createdTime=Mon Jun 29 00:05:00 CST 2015, time=2015-06-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1819847, encodeId=3785181984e72, content=<a href='/topic/show?id=7d589993e6f' target=_blank style='color:#2F92EE;'>#靶向细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99937, encryptionId=7d589993e6f, topicName=靶向细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7ca4300, createdName=wodejia-dayu, createdTime=Tue Sep 29 16:05:00 CST 2015, time=2015-09-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=29141, encodeId=71df2914104, content=看看, beContent=null, objectType=article, channel=null, level=null, likeNumber=148, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ee0d1618732, createdName=huaxipanxing, createdTime=Thu Jun 25 22:20:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1291615, encodeId=64a312916159a, content=<a href='/topic/show?id=137a831151a' target=_blank style='color:#2F92EE;'>#肿瘤转移#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=83115, encryptionId=137a831151a, topicName=肿瘤转移)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=1be8234, createdName=sunyl07, createdTime=Thu Jun 25 00:05:00 CST 2015, time=2015-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=28675, encodeId=a1c2286e5e8, content=细胞骨架应该能成为抗肿瘤的靶点, beContent=null, objectType=article, channel=null, level=null, likeNumber=182, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=96871613250, createdName=medcardio, createdTime=Tue Jun 23 23:07:00 CST 2015, time=2015-06-23, status=1, ipAttribution=)]
    2015-06-25 huaxipanxing

    看看

    0

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    2015-06-23 medcardio

    细胞骨架应该能成为抗肿瘤的靶点

    0

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Cancer Res:看见肿瘤转移

研究者首先倒腾出了一个道具(如下图),在聚二甲硅氧烷(polydimethylsiloxane,PDMS)支架里,灌注一层I型胶原,由于预先在中间放置圆柱形的模具,因此将模具抽出后将获得一个管状通道。在管状通道内表面铺上血管内皮细胞,在I型胶原基质里埋进肿瘤细胞,就大功告成啦。 忍不住秀下这个酷炫的道具,看下图,可以看到I型胶原基质中的HT-1080纤维肉瘤细胞似乎已经向血管壁伸出了欲望

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近日,贝尔法斯特女王大学科学家们获得一个重大突破,可能导致产生喉咙和宫颈癌更有效的治疗方法。这一新疗法将针对肿瘤组织周围的非癌细胞以及肿瘤本身。 癌症研究和细胞生物学中心研究人员已经发现喉咙和子宫颈癌症周围的非癌组织或“基质”对调节癌细胞的扩散起着重要作用。这一发现为开发新的针对这种非癌组织的治疗方法铺平了道路。 Dennis McCance教授领导了该项研究,研究论文发表在European

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癌症是威胁人类健康最严重的疾病之一,而癌症转移扩散则是导致癌症病人死亡和预后复发的最主要原因。通过阻断免疫系统的抑制信号通路来重新激活人体免疫系统,让免疫保护机制去消灭癌细胞。这种肿瘤免疫疗法被视作为是一种有前景的癌症治疗手段。日前,一支国际联合研究小组发现了一种方法可唤醒免疫系统杀死扩散癌细胞的能力。研究人员证实通过靶向 TAM 受体的生物化学活性可以显著减少癌细胞扩散。

Nature:抗CCL2治疗乳腺癌需谨慎

来自Friedrich Miescher生物医学研究所(FMI)的Mohamed Bentires-Alj和他的研究小组,以及来自诺华生物医学研究院的科学家们在发表于10月22日《自然》(Nature)杂志上的一项研究中证实,一种针对转移性乳腺癌的有前景的治疗方法在终止治疗后会引发有害效应。 终止抑制CCL2反常地增进了转移形成,导致了早逝,因此破坏了这种治疗最初的有

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    1896年,澳大利亚学者Ashworth在一例转移性肿瘤患者血液中首次观察到从实体肿瘤中脱离并进入血液循环的肿瘤细胞,并率先提出了循环肿瘤细胞(CTC)的概念。近年来世界各国研究人员围绕CTC在乳腺癌、结直肠癌等肿瘤中的应用价值开展了多项探索研究。美国乔治敦大学医院教授Minetta Liu在日前于北京举行的“第十五届中国临床肿瘤学大会”上介绍,多数肿瘤几乎都

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  从1979年发现至今,p53已经历经30多年的岁月,关于p53的文章层出不穷,每当我们觉得离p53的真相接近之时才发现,p53仍是我们最熟悉的陌生人。这个明星抑癌基因至今已被发现与多种作用因子,信号途径有关,近期来自中国科技大学,美国滨州大学医学院等处的研究人员就发现了一种抑癌基因读码框移位蛋白(Alternative reading frame protein,ARF)相关酶Siva1与p5

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