Nature子刊:挑战常规!提出肿瘤转移新理论

2016-08-18 佚名 生物谷

在一项新的研究中,来自美国加州大学洛杉矶分校加州纳米系统研究所的研究人员在证实关于一些癌细胞如何发生转移的一种不同寻常的理论上取得重大进展。他们的发现可能导致人们开发出新的治疗策略阻止黑色素瘤扩散。相关研究结果近期发表在Scientific Reports期刊上,论文标题为“Imaging of Angiotropism/Vascular Co-Option in a Murine Model

在一项新的研究中,来自美国加州大学洛杉矶分校加州纳米系统研究所的研究人员在证实关于一些癌细胞如何发生转移的一种不同寻常的理论上取得重大进展。他们的发现可能导致人们开发出新的治疗策略阻止黑色素瘤扩散。相关研究结果近期发表在Scientific Reports期刊上,论文标题为“Imaging of Angiotropism/Vascular Co-Option in a Murine Model of Brain Melanoma: Implications for Melanoma Progression along Extravascular Pathways”。

关于癌症如何扩散的一种普遍持有的理论是肿瘤细胞从原发性肿瘤中脱落下来,在血液中迁移,到达其他的器官,并且附着在其中和长成新的肿瘤。但是这种理论一直存在的问题是血液中的循环肿瘤细胞有时具有短的寿命,而且人们对这些细胞如何离开血液和附着到器官上缺乏理解。

这项新研究的科研团队是由加州大学洛杉矶分校先进光学显微镜/光谱学实验室主任Laurent Bentolila领导的,包括Claire Lugassy和Raymond Barnhill。除了这种关于癌症如何扩散的流行理论外,他们给出一种新的理论:肿瘤细胞也能够通过一种被称作血管趋向性(angiotropism)的机制在体内扩散,这意味着它们能够沿着血管外表面迁移,而不用进入血液中。

在过去十年,Lugassy和Barnhil收集证据来证实肿瘤细胞,特别是来自黑色素瘤(一种致命性皮肤癌)的那些癌细胞,就像是微小的蜘蛛那样沿着血管外表面爬行,从而导致癌症扩散。他们也发现这些迁移的癌细胞学着周细胞(pericyte)---位于毛细血管壁上的细胞---的样子,其中周细胞阻止这些癌细胞被人免疫系统杀死。

这项研究也是首次标志着对人们能够这些迁移的癌细胞进行三维成像观察。

为了开展这种成像观察,研究人员将红色荧光染料灌注到血管中,同时将经过绿色荧光染料标记的人黑色素瘤细胞注射到小鼠的大脑中。他们利用一种被称作共焦荧光显微镜的显微技术拍摄三维图像,在这些图像中,这些经过染料标记的肿瘤细胞和血管在特定光线照射下发光。这些图像表明这些肿瘤细胞开始在注射位点作为原发性肿瘤进行生长。研究人员不久就观察到这些发光绿色荧光的肿瘤细胞从原发性肿瘤中扩散出来,并且沿着发出红色荧光的血管外表面迁移。

Bentolila说,“这项关于血管趋向性的研究对这种流行的理论---所有转移性肿瘤细胞从原发性肿瘤中脱落下来,在血液中流动,从而导致癌症扩散---提出挑战。如果肿瘤细胞能够通过在血管和其他解剖结构的表面上持续迁移进行扩散,那么它们如今在血液外面有一种逃生路线。”

Bentolila说,如果肿瘤细胞经发现在血液中流动,那么医生们可能开出化疗药物。

他说,“但是如果这些转移性肿瘤细胞位于血管外表面上,那么它们就能避免接触到这些化疗药物,从而持续地扩散癌症。”

这些发现将能够让人们寻找神经胶质瘤、胶质母细胞瘤、胰腺癌、前列腺癌和妇科癌肉瘤等致命性癌症的新靶标。

原始出处

Laurent A. Bentolila, Roshini Prakash, Daniela Mihic-Probst, Madhuri Wadehra, Hynda K. Kleinman, Thomas S. Carmichael, Bruno Péault, Raymond L. Barnhill & Claire Lugassy.Imaging of Angiotropism/Vascular Co-Option in a Murine Model of Brain Melanoma: Implications for Melanoma Progression along Extravascular Pathways.Scientific Reports.2016

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    2016-12-07 仁心济世
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    2016-08-20 136****0753赵

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    0

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  4. [GetPortalCommentsPageByObjectIdResponse(id=1881269, encodeId=83631881269e1, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=19, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=仁心济世, createdTime=Wed Dec 07 01:02:00 CST 2016, time=2016-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=101498, encodeId=b43d10149883, content=值得学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTLMzGpMQ8w4I7FpiblCXNcmI6O7TDINutbaicEUpoYFR1rWqn3kTbulfMhT0iaPFurLz2ddEcWe3BiciaQ/0, createdBy=5f6e1724878, createdName=136****0753赵, createdTime=Sat Aug 20 15:19:00 CST 2016, time=2016-08-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1291623, encodeId=84521291623f0, 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=25, 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=Sat Aug 20 03:02:00 CST 2016, time=2016-08-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100685, encodeId=6309100685a5, content=学习了,赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRuUXgacXpPeW0x8Z3Qr9c3I2kTic4ZIpR29iaftYgkjRcbv982icYMtqANBPYBgPnOia6mVtX76qMXuc/0, createdBy=ebe61630855, createdName=1dd8a7c5m95(暂无匿称), createdTime=Fri Aug 19 08:07:00 CST 2016, time=2016-08-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100680, encodeId=d3f8100680dc, content=学习了,赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRuUXgacXpPeW0x8Z3Qr9c3I2kTic4ZIpR29iaftYgkjRcbv982icYMtqANBPYBgPnOia6mVtX76qMXuc/0, createdBy=ebe61630855, createdName=1dd8a7c5m95(暂无匿称), createdTime=Fri Aug 19 08:06:00 CST 2016, time=2016-08-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100681, encodeId=56d41006816f, content=学习了,赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRuUXgacXpPeW0x8Z3Qr9c3I2kTic4ZIpR29iaftYgkjRcbv982icYMtqANBPYBgPnOia6mVtX76qMXuc/0, createdBy=ebe61630855, createdName=1dd8a7c5m95(暂无匿称), createdTime=Fri Aug 19 08:06:00 CST 2016, time=2016-08-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100571, encodeId=0b731005e167, content=继续学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzfPkmqRTH5rHib5mcib8Wb3QdXjhfOK1UubQL2lictjJFdFJ6Lc3cnnCOSWqxXZ4Kk6y5GdzDoy764R/0, createdBy=156e1644785, createdName=doctorJiangchao, createdTime=Thu Aug 18 22:49:00 CST 2016, time=2016-08-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100572, encodeId=e7a11005e2d9, content=继续关注, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzfPkmqRTH5rHib5mcib8Wb3QdXjhfOK1UubQL2lictjJFdFJ6Lc3cnnCOSWqxXZ4Kk6y5GdzDoy764R/0, createdBy=156e1644785, createdName=doctorJiangchao, createdTime=Thu Aug 18 22:49:00 CST 2016, time=2016-08-18, status=1, ipAttribution=)]
    2016-08-19 1dd8a7c5m95(暂无匿称)

    学习了,赞一个!

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1881269, encodeId=83631881269e1, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=19, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=仁心济世, createdTime=Wed Dec 07 01:02:00 CST 2016, time=2016-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=101498, encodeId=b43d10149883, content=值得学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTLMzGpMQ8w4I7FpiblCXNcmI6O7TDINutbaicEUpoYFR1rWqn3kTbulfMhT0iaPFurLz2ddEcWe3BiciaQ/0, createdBy=5f6e1724878, createdName=136****0753赵, createdTime=Sat Aug 20 15:19:00 CST 2016, time=2016-08-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1291623, encodeId=84521291623f0, 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=25, 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=Sat Aug 20 03:02:00 CST 2016, time=2016-08-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100685, encodeId=6309100685a5, content=学习了,赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRuUXgacXpPeW0x8Z3Qr9c3I2kTic4ZIpR29iaftYgkjRcbv982icYMtqANBPYBgPnOia6mVtX76qMXuc/0, createdBy=ebe61630855, createdName=1dd8a7c5m95(暂无匿称), createdTime=Fri Aug 19 08:07:00 CST 2016, time=2016-08-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100680, encodeId=d3f8100680dc, content=学习了,赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRuUXgacXpPeW0x8Z3Qr9c3I2kTic4ZIpR29iaftYgkjRcbv982icYMtqANBPYBgPnOia6mVtX76qMXuc/0, createdBy=ebe61630855, createdName=1dd8a7c5m95(暂无匿称), createdTime=Fri Aug 19 08:06:00 CST 2016, time=2016-08-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100681, encodeId=56d41006816f, content=学习了,赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRuUXgacXpPeW0x8Z3Qr9c3I2kTic4ZIpR29iaftYgkjRcbv982icYMtqANBPYBgPnOia6mVtX76qMXuc/0, createdBy=ebe61630855, createdName=1dd8a7c5m95(暂无匿称), createdTime=Fri Aug 19 08:06:00 CST 2016, time=2016-08-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100571, encodeId=0b731005e167, content=继续学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzfPkmqRTH5rHib5mcib8Wb3QdXjhfOK1UubQL2lictjJFdFJ6Lc3cnnCOSWqxXZ4Kk6y5GdzDoy764R/0, createdBy=156e1644785, createdName=doctorJiangchao, createdTime=Thu Aug 18 22:49:00 CST 2016, time=2016-08-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100572, encodeId=e7a11005e2d9, content=继续关注, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzfPkmqRTH5rHib5mcib8Wb3QdXjhfOK1UubQL2lictjJFdFJ6Lc3cnnCOSWqxXZ4Kk6y5GdzDoy764R/0, createdBy=156e1644785, createdName=doctorJiangchao, createdTime=Thu Aug 18 22:49:00 CST 2016, time=2016-08-18, status=1, ipAttribution=)]
    2016-08-19 1dd8a7c5m95(暂无匿称)

    学习了,赞一个!

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1881269, encodeId=83631881269e1, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=19, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/aLGWoFXAyMbIu3qymFOyheQLjPSX3OUs5GmkyBlcCOwTPIeq3why9NGibxxUqYo6hcx8qZLHZFgNPnBK1yzWeOFpyg2OnWOt0/0, createdBy=fa4716, createdName=仁心济世, createdTime=Wed Dec 07 01:02:00 CST 2016, time=2016-12-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=101498, encodeId=b43d10149883, content=值得学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTLMzGpMQ8w4I7FpiblCXNcmI6O7TDINutbaicEUpoYFR1rWqn3kTbulfMhT0iaPFurLz2ddEcWe3BiciaQ/0, createdBy=5f6e1724878, createdName=136****0753赵, createdTime=Sat Aug 20 15:19:00 CST 2016, time=2016-08-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1291623, encodeId=84521291623f0, 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=25, 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=Sat Aug 20 03:02:00 CST 2016, time=2016-08-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100685, encodeId=6309100685a5, content=学习了,赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRuUXgacXpPeW0x8Z3Qr9c3I2kTic4ZIpR29iaftYgkjRcbv982icYMtqANBPYBgPnOia6mVtX76qMXuc/0, createdBy=ebe61630855, createdName=1dd8a7c5m95(暂无匿称), createdTime=Fri Aug 19 08:07:00 CST 2016, time=2016-08-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100680, encodeId=d3f8100680dc, content=学习了,赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRuUXgacXpPeW0x8Z3Qr9c3I2kTic4ZIpR29iaftYgkjRcbv982icYMtqANBPYBgPnOia6mVtX76qMXuc/0, createdBy=ebe61630855, createdName=1dd8a7c5m95(暂无匿称), createdTime=Fri Aug 19 08:06:00 CST 2016, time=2016-08-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100681, encodeId=56d41006816f, content=学习了,赞一个!, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfNLvzZhgPxRuUXgacXpPeW0x8Z3Qr9c3I2kTic4ZIpR29iaftYgkjRcbv982icYMtqANBPYBgPnOia6mVtX76qMXuc/0, createdBy=ebe61630855, createdName=1dd8a7c5m95(暂无匿称), createdTime=Fri Aug 19 08:06:00 CST 2016, time=2016-08-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100571, encodeId=0b731005e167, content=继续学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzfPkmqRTH5rHib5mcib8Wb3QdXjhfOK1UubQL2lictjJFdFJ6Lc3cnnCOSWqxXZ4Kk6y5GdzDoy764R/0, createdBy=156e1644785, createdName=doctorJiangchao, createdTime=Thu Aug 18 22:49:00 CST 2016, time=2016-08-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=100572, encodeId=e7a11005e2d9, content=继续关注, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzfPkmqRTH5rHib5mcib8Wb3QdXjhfOK1UubQL2lictjJFdFJ6Lc3cnnCOSWqxXZ4Kk6y5GdzDoy764R/0, createdBy=156e1644785, createdName=doctorJiangchao, createdTime=Thu Aug 18 22:49:00 CST 2016, time=2016-08-18, status=1, ipAttribution=)]
    2016-08-19 1dd8a7c5m95(暂无匿称)

    学习了,赞一个!

    0

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    2016-08-18 doctorJiangchao

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