Cell子刊:为何抗癌药物无法渗透实体瘤?肿瘤内部压力大是重要原因

2016-05-16 佚名 生物谷

许多癌症治疗药物疗效不佳,其中一个原因就在于这些药物无法渗入实体瘤内部的高压环境。根据发表在国际学术期刊Biophysical Journal上的最新研究结果,透明质酸可导致肿瘤内部形成胶状液态压力环境,是导致癌症药物无法渗入的重要原因。   来自美国西雅图弗雷德哈金森癌症研究中心的Sunil Hingorani表示:"我们发现肿瘤内部的胶状液态环境是胰腺癌产生药物抵抗的主要机制

许多癌症治疗药物疗效不佳,其中一个原因就在于这些药物无法渗入实体瘤内部的高压环境。根据发表在国际学术期刊Biophysical Journal上的最新研究结果,透明质酸可导致肿瘤内部形成胶状液态压力环境,是导致癌症药物无法渗入的重要原因。
 
来自美国西雅图弗雷德哈金森癌症研究中心的Sunil Hingorani表示:"我们发现肿瘤内部的胶状液态环境是胰腺癌产生药物抵抗的主要机制。这同时意味着有必要重新审视之前认为无效的癌症治疗药物,搞清楚这些药物是否能够进入到肿瘤内部。除此之外,这种胶状液态环境可能在其它类型的肿瘤中也存在,因此应该针对该问题寻找新的药物运输方法。"
 
在进行该研究之前,研究人员提出假设,认为透明质酸产生的胶状液相环境是许多实体肿瘤内部出现高压状态的主要驱动因素。为了对这一观点进行验证,研究人员利用一种叫做压电式压力导管传感器(piezoelectric pressure catheter transducer)的设备捕获肿瘤内部的流动液体和胶样液体压力。他们将包含压力传感器的探针通过针头插入到胰腺癌小鼠模型的肿瘤内部,为了进行对比,他们还是用了经典的wick-in-needle技术进行了压力测量。
 
结果表明,用压电式压力导管传感器测量得到的压力数值要明显高于wick-in-needle技术,并且液相压力的增加与不同肿瘤模型内部透明质酸的含量增加呈现相关性。这就表明透明质酸依赖性的胶样液相压力环境在增加实体瘤内部压力方面发挥重要作用,这是之前研究从未发现过的。
 
研究人员接下来使用一种经过修饰的透明质酸酶治疗胰腺癌小鼠模型,帮助降解透明质酸。该治疗方法能够改变胶样液相环境,使血管得以重新形成,有助于解决药物运输问题,对于改善肿瘤病人的药物抵抗问题提供了重要帮助。
 
目前透明质酸酶联合治疗方法已经处于临床试验阶段,相信在不久的将来会成为癌症治疗的一种有效手段。
 
原始出处
 
Christopher C. DuFort1, Kathleen E. DelGiorno1, Markus A. Carlson1, Ryan J. Osgood3, Chunmei Zhao3.Interstitial Pressure in Pancreatic Ductal Adenocarcinoma Is Dominated by a Gel-Fluid Phase.Biophysical 2016

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    2016-09-30 1e10c84am36(暂无匿称)

    拜读,好文

    0

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  5. [GetPortalCommentsPageByObjectIdResponse(id=1922280, encodeId=17df192228055, content=<a href='/topic/show?id=9aec36940eb' target=_blank style='color:#2F92EE;'>#压力大#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=36940, encryptionId=9aec36940eb, topicName=压力大)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e572480, createdName=旅苦化文_208, createdTime=Fri Oct 14 09:50:00 CST 2016, time=2016-10-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=138163, encodeId=90e2138163b7, content=拜读,好文, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzdAIB7UwTkHt6fQkBP8ictliaXtc5gCUmYdAW1sAETC2nhO3q6YjRHkUibyOCtP8ibmXNObTyd63A076/0, createdBy=d4111948983, createdName=1e10c84am36(暂无匿称), createdTime=Fri Sep 30 15:22:59 CST 2016, time=2016-09-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1814788, encodeId=49c71814e8811, content=<a href='/topic/show?id=d007960622e' target=_blank style='color:#2F92EE;'>#重要原因#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96062, encryptionId=d007960622e, topicName=重要原因)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=8949377, createdName=chenzhuanggui, createdTime=Wed Aug 24 22:50:00 CST 2016, time=2016-08-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1869375, encodeId=0b1418693e576, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=22, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Sun Aug 14 05:50:00 CST 2016, time=2016-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1959632, encodeId=13fe19596324c, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Wed Oct 19 22:50:00 CST 2016, time=2016-10-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1308222, encodeId=212513082220f, content=<a href='/topic/show?id=6e495554550' target=_blank style='color:#2F92EE;'>#抗癌药物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=19, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55545, encryptionId=6e495554550, topicName=抗癌药物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=9fe6351, createdName=flyingeagle77, createdTime=Wed May 18 11:50:00 CST 2016, time=2016-05-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1314656, encodeId=6e5f131465608, content=<a href='/topic/show?id=9d4b5554131' target=_blank style='color:#2F92EE;'>#抗癌药#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=20, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=55541, encryptionId=9d4b5554131, topicName=抗癌药)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Wed May 18 11:50:00 CST 2016, time=2016-05-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=86147, encodeId=f86b8614edf, content=肿瘤内部的胶状液态环境是胰腺癌产生药物抵抗的主要机制。这同时意味着有必要重新审视之前认为无效的癌症治疗药物,搞清楚这些药物是否能够进入到肿瘤内部。, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4bfa83595, createdName=jetleo, createdTime=Tue May 17 16:58:00 CST 2016, time=2016-05-17, status=1, ipAttribution=)]
    2016-10-19 维他命
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    2016-05-18 sunylz
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    2016-05-17 jetleo

    肿瘤内部的胶状液态环境是胰腺癌产生药物抵抗的主要机制。这同时意味着有必要重新审视之前认为无效的癌症治疗药物,搞清楚这些药物是否能够进入到肿瘤内部。

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