Nature Biomedical Engineering:突破!纳米颗粒抗击前列腺癌!抑癌因子被恢复!

2018-09-20 Michael,Zoe 转化医学网

根据神刊CA刚刚发布的全球癌症统计报告2018,前列腺癌在男性肿瘤的发病和致死率中均排行前5名。这种发病和致死率均十分高的肿瘤困扰着全球数千万的老年男性。来自布里格姆妇女医院和波士顿儿童医院的研究小组与Memorial Sloan Kettering癌症中心的科研人员利用纳米颗粒开发出一种全新的抑癌方法, 他们通过重新赋予像PTEN和p53等肿瘤抑制因子的功能进而达到减缓前列腺癌的进展。该团队最新

导  读

根据神刊CA刚刚发布的全球癌症统计报告2018,前列腺癌在男性肿瘤的发病和致死率中均排行前5名。这种发病和致死率均十分高的肿瘤困扰着全球数千万的老年男性。来自布里格姆妇女医院和波士顿儿童医院的研究小组与Memorial Sloan Kettering癌症中心的科研人员利用纳米颗粒开发出一种全新的抑癌方法, 他们通过重新赋予像PTEN和p53等肿瘤抑制因子的功能进而达到减缓前列腺癌的进展。该团队最新的研究成果发表在本周的“Nature Biomedical Engineering”杂志中。

全新的纳米递送系统

当前肿瘤的阻断技术主要依赖于将促进肿瘤进展的蛋白分子或者基因进行沉默或抑制其表达的处理,但Jinjun Shi教授的研究团队并没有采用当前流行的沉默技术,他们反其道而行,采用前所未有的技术重新赋予肿瘤内失去功能的抑癌因子所有的功能,进而达到抑制前列腺癌的作用。

Jinjun Shi 教授表示,“他们的方法将纳米技术和生物学的完美融合。他们在大多数已出现转移的前列腺患者中发现抑癌基因PTEN的丢失或突变,但功能性重建PTEN的抑癌作用相当困难。而基于mRNA的纳米疗法为现在的抗肿瘤疗法提供了新的策略”。



目前的研究表明此技术安全无毒

该团队的攻克目标是使功能性PTEN基因重新引入癌细胞,以此启动机体原有的天然肿瘤抑制机制。为此,研究人员开发了一种mRNA纳米颗粒,这种颗粒是一种极小的递送载体,可以将遗传信息传递到细胞中。研究小组测试了此类纳米颗粒对实前列腺癌细胞的影响,发现纳米颗粒可以有效地渗透细胞,保护mRNA免于降解,恢复机体对肿瘤的天然杀伤作用,杀死癌细胞。

该团队还报告了此类纳米颗粒在前列腺癌小鼠模型中对肿瘤生长具有显着抑制作用。该研究团队利用全新的成像技术,通过影像学证据证明了纳米颗粒递送的PTEN mRNA是造成癌细胞被抑制的根本原因。此外,研究小组还报告了该治疗策略的安全性,其研究表明这种疗法没有明显的毒性作用。

Bruce R. Zetter 教授表示,“大多数癌症疗法阻断某些因素,例如致癌基因,进而减缓肿瘤细胞异常增殖。而他们利用全新的纳米技术向肿瘤细胞内添加了一种蛋白质,使肿瘤细胞更像正常细胞,进而阻断其进展。临床综合基因组测序显示,包括PTEN在内的肿瘤抑制因子进行性丢失或失活与前列腺癌的进展和转移相关。恢复机体肿瘤抑制功能具有巨大的临床意义”。



进入临床使用前仍“任重而道远”

Omid Farokhzad 在采访中表示,“对于核酸治疗领域来说,这是令人兴奋的时期。第一批获得监管部门批准的siRNA治疗药物和众多mRNA治疗药物已经进入相应的临床使用当中。他们的研究项目首次使用纳米技术将mRNA系统递送到肿瘤细胞内,并在体内恢复机体对肿瘤生长的抑制。这种方法可有助于治疗众多恶性肿瘤和其他潜在的临床疾病。



目前,这项工作仍处于概念验证阶段,虽证明了这种方法的潜在作用,但在用于人类疾病之前仍需要进一步测试和验证。该团队表示他们将继续测试该纳米技术,并探索该技术在其他肿瘤抑制因子(如p53)的应用,相信最终可将该技术造福于临床肿瘤患者。

原始出处:Mohammad Ariful Islam, Yingjie Xu, Wei Tao, et al. Restoration of tumour-growth suppression in vivo via systemic nanoparticle-mediated delivery of PTEN mRNA. Nature Biomedical Engineering. 17 September 2018

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    2019-01-10 spoonycyy
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    2019-01-02 jeanqiuqiu
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topicName=Medical)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=cbe912466517, createdName=海豹, createdTime=Sat Sep 22 04:02:00 CST 2018, time=2018-09-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609121, encodeId=53a01609121a2, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Sat Sep 22 04:02:00 CST 2018, time=2018-09-22, status=1, ipAttribution=)]
    2019-06-20 liye789132251
  4. 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  5. 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  6. 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  7. 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createdName=jeanqiuqiu, createdTime=Wed Jan 02 10:02:00 CST 2019, time=2019-01-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1883318, encodeId=3e7218833181d, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, 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 Jun 20 04:02:00 CST 2019, time=2019-06-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1785353, encodeId=c81d1e85353dd, content=<a href='/topic/show?id=0a9c6e87ef' target=_blank style='color:#2F92EE;'>#Engin#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6787, encryptionId=0a9c6e87ef, topicName=Engin)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3fc52500170, createdName=12498cbcm00(暂无昵称), createdTime=Mon May 27 20:02:00 CST 2019, time=2019-05-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1640663, encodeId=29e616406638b, content=<a href='/topic/show?id=fd575494e5e' target=_blank style='color:#2F92EE;'>#抑癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54947, encryptionId=fd575494e5e, topicName=抑癌)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=35f822706827, createdName=jingyanzhu715_39486108, createdTime=Tue Dec 11 07:02:00 CST 2018, time=2018-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1785411, encodeId=db4c1e8541118, content=<a href='/topic/show?id=db0e6e8835' target=_blank style='color:#2F92EE;'>#engineering#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6788, encryptionId=db0e6e8835, topicName=engineering)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f7482500171, createdName=ms4468361851264128, createdTime=Thu Apr 18 06:02:00 CST 2019, time=2019-04-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1918289, encodeId=a69e19182897a, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=18, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Fri Nov 02 05:02:00 CST 2018, time=2018-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1323390, encodeId=9187132339078, content=<a href='/topic/show?id=d8d5e7476de' target=_blank style='color:#2F92EE;'>#纳米颗粒#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77476, encryptionId=d8d5e7476de, topicName=纳米颗粒)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/WQ1WyMBGic8d2fKdCe6Cm3vaRh4X8YnlumYndC46iagNCBl9Df8RtoCaQchnFtZldHUctGJjsgsyutUlu8vPq6yQ/132, createdBy=97862500016, createdName=ms3117646317107274, createdTime=Sat Sep 22 04:02:00 CST 2018, time=2018-09-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1533572, encodeId=2fad15335e2cb, content=<a href='/topic/show?id=7583114e529' target=_blank style='color:#2F92EE;'>#Medical#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11475, encryptionId=7583114e529, topicName=Medical)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=cbe912466517, createdName=海豹, createdTime=Sat Sep 22 04:02:00 CST 2018, time=2018-09-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609121, encodeId=53a01609121a2, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Sat Sep 22 04:02:00 CST 2018, time=2018-09-22, status=1, ipAttribution=)]
    2018-11-02 sunylz
  8. [GetPortalCommentsPageByObjectIdResponse(id=2081475, encodeId=249720814e5f7, content=<a href='/topic/show?id=57406e8506' target=_blank style='color:#2F92EE;'>#Eng#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6785, encryptionId=57406e8506, topicName=Eng)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3516494, createdName=spoonycyy, createdTime=Thu Jan 10 13:02:00 CST 2019, time=2019-01-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1858897, encodeId=8cc3185889e45, content=<a href='/topic/show?id=e0a9593596' target=_blank style='color:#2F92EE;'>#DIC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5935, encryptionId=e0a9593596, topicName=DIC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6f7770, createdName=jeanqiuqiu, createdTime=Wed Jan 02 10:02:00 CST 2019, time=2019-01-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1883318, encodeId=3e7218833181d, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=25, 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 Jun 20 04:02:00 CST 2019, time=2019-06-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1785353, encodeId=c81d1e85353dd, content=<a href='/topic/show?id=0a9c6e87ef' target=_blank style='color:#2F92EE;'>#Engin#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6787, 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beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6788, encryptionId=db0e6e8835, topicName=engineering)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f7482500171, createdName=ms4468361851264128, createdTime=Thu Apr 18 06:02:00 CST 2019, time=2019-04-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1918289, encodeId=a69e19182897a, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=18, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Fri Nov 02 05:02:00 CST 2018, time=2018-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1323390, 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topicName=Medical)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=cbe912466517, createdName=海豹, createdTime=Sat Sep 22 04:02:00 CST 2018, time=2018-09-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609121, encodeId=53a01609121a2, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Sat Sep 22 04:02:00 CST 2018, time=2018-09-22, status=1, ipAttribution=)]
  9. [GetPortalCommentsPageByObjectIdResponse(id=2081475, encodeId=249720814e5f7, content=<a href='/topic/show?id=57406e8506' target=_blank style='color:#2F92EE;'>#Eng#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6785, encryptionId=57406e8506, topicName=Eng)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3516494, createdName=spoonycyy, createdTime=Thu Jan 10 13:02:00 CST 2019, time=2019-01-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1858897, encodeId=8cc3185889e45, content=<a href='/topic/show?id=e0a9593596' target=_blank style='color:#2F92EE;'>#DIC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5935, encryptionId=e0a9593596, topicName=DIC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6f7770, 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topicName=Medical)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=cbe912466517, createdName=海豹, createdTime=Sat Sep 22 04:02:00 CST 2018, time=2018-09-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1609121, encodeId=53a01609121a2, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=24, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Sat Sep 22 04:02:00 CST 2018, time=2018-09-22, status=1, ipAttribution=)]
    2018-09-22 海豹
  10. 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