Oncotarget:外泌体miR-141-3p可调节成骨细胞活性来促进前列腺癌的进展

2017-12-09 MedSci MedSci原创

来自于癌细胞的外泌体,含有微小RNA,且先于癌细胞到达转移部位。既往研究已经显示外泌体miR-141-3p与转移性前列腺癌(PCa)的发生相关。然而,miR-141-3p在骨转移微环境中的作用和调控机制有待于进一步的研究。在这项研究中,研究人员进行了一系列的体内和体外实验,以确定来自MDA PCa 2b细胞的外来体miR-141-3p是否可调节成骨细胞的活性以促进成骨细胞的转移。研究人员从细胞培养

来自于癌细胞的外泌体,含有微小RNA,且先于癌细胞到达转移部位。既往研究已经显示外泌体miR-141-3p与转移性前列腺癌(PCa)的发生相关。然而,miR-141-3p在骨转移微环境中的作用和调控机制有待于进一步的研究。

在这项研究中,研究人员进行了一系列的体内和体外实验,以确定来自MDA PCa 2b细胞的外来体miR-141-3p是否可调节成骨细胞的活性以促进成骨细胞的转移。研究人员从细胞培养上清液中提取了外泌体,发现MDA-PCa2b细胞外泌体中miR-141-3p的表达水平明显升高。

共聚焦检测显示,大量MDA PCa2b外泌体进入成骨细胞,在体外,通过MDA PCa2b外泌体可将miR-141-3p转染至成骨细胞。来自MDA PCa2b的外泌体miR-141-3p促进成骨细胞活性并增加骨保护素OPG的表达。miR-141-3p抑制靶基因DLC1的蛋白水平,表明其在激活p38MAPK途径中的功能意义。动物实验中,外泌体miR-141-3p具有骨靶特异性并促进成骨细胞活性。注射miR-141-3p-外泌体模拟物的小鼠发生明显的成骨细胞性骨转移。

综上所述,该研究结果表明,来自MDA PCa 2b细胞的外泌体miR-141-3p可促进成骨细胞活性并调节骨转移的微环境,其在PCa中的骨转移和骨生成损伤中起重要作用。阐明骨转移的具体机制将有助于为PCa的治疗创造新的可能性。

原始出处:

Ye Y, Li SL, et al., Exosomal miR-141-3p regulates osteoblast activity to promote the osteoblastic metastasis of prostate cancer. Oncotarget. 2017 Oct 24;8(55):94834-94849. doi: 10.18632/oncotarget.22014. eCollection 2017 Nov 7.

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    2018-08-23 smallant2002
  2. [GetPortalCommentsPageByObjectIdResponse(id=1930566, encodeId=e23d19305664e, content=<a href='/topic/show?id=22f61180211' target=_blank style='color:#2F92EE;'>#miR#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11802, encryptionId=22f61180211, topicName=miR)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0a27288, createdName=smallant2002, createdTime=Thu Aug 23 11:35:00 CST 2018, time=2018-08-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1795494, encodeId=2bf51e95494e5, content=<a href='/topic/show?id=248e1e1345b' target=_blank style='color:#2F92EE;'>#target#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17134, encryptionId=248e1e1345b, topicName=target)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=55683, createdName=仁医06, createdTime=Sun Aug 05 18:35:00 CST 2018, time=2018-08-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=268670, encodeId=ad652686e043, content=很好, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=108b2120555, createdName=maomao666, createdTime=Mon Dec 11 18:35:41 CST 2017, time=2017-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=268659, encodeId=c783268659a9, content=学习了!, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ee621460358, createdName=科研狗19, createdTime=Mon Dec 11 17:48:35 CST 2017, time=2017-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351643, encodeId=c3de135164388, content=<a href='/topic/show?id=e95954093cd' target=_blank style='color:#2F92EE;'>#成骨#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54093, encryptionId=e95954093cd, topicName=成骨)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Mon Dec 11 05:35:00 CST 2017, time=2017-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1495027, encodeId=e680149502ec0, content=<a href='/topic/show?id=3c0b10182102' target=_blank style='color:#2F92EE;'>#骨细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=101821, encryptionId=3c0b10182102, topicName=骨细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=723c9147696, createdName=jj000004, createdTime=Mon Dec 11 05:35:00 CST 2017, time=2017-12-11, status=1, ipAttribution=)]
    2018-08-05 仁医06
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    2017-12-11 maomao666

    很好

    0

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    2017-12-11 科研狗19

    学习了!

    0

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    2017-12-11 zhaojie88
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