Cancer Res:不健康的肠道会促进乳腺癌扩散

2019-08-13 小通 生物通

弗吉尼亚大学癌症中心的最新研究表明,不健康的、发炎的肠道会使乳腺癌变得更具侵袭性,并更快地扩散到身体的其他部位。

弗吉尼亚大学癌症中心的最新研究表明,不健康的、发炎的肠道会使乳腺癌变得更具侵袭性,并更快地扩散到身体的其他部位。


图片来自原文

弗吉尼亚大学癌症中心微生物学、免疫学和癌症生物学系的Melanie Rutkowski博士发现,破坏小鼠的微生物群会导致激素受体阳性乳腺癌变得更具攻击性。改变肠道和其他地方的微生物群,会在体内产生巨大的影响,促使癌症扩散。

“当我们通过长期使用抗生素破坏小鼠体内微生物群的平衡时,会导致全身和乳腺组织内的炎症,”她说。“在这种发炎的环境中,肿瘤细胞更容易从组织中扩散到血液和肺部,这是激素受体阳性乳腺癌转移进入的主要部位。”

激素受体阳性乳腺癌

大多数乳腺癌——65%或更多——是激素受体阳性的。这意味着它们的生长是由一种激素,雌激素或黄体酮推动的。好消息是,这些类型的癌症可能对激素治疗反应良好。

预测这种癌症是否会扩散到乳腺以外的其他部位(这过程称为转移),是该领域的一个主要挑战,主要是由诊断时的临床特征决定的。Rutkowski解释说,早期转移受多种因素影响。“其中一个因素是组织内巨噬细胞的高水平,”她说。“也有研究表明,组织和肿瘤中结构蛋白胶原蛋白的增加也会导致乳腺癌转移增加。”

患乳腺癌前微生物群不健康的话会促进上面提到的两个因素,而且效果是强有力和持续的。“破坏微生物群会导致组织和肿瘤环境长期炎症,”Rutkowski说。“这些发现表明,携带一个不健康的微生物群,以及与不健康的微生物群有关的组织内环境变化,可能是侵袭性或转移性乳腺癌的早期特征。最终,根据这些发现,我们推测不健康的微生物群有助于增加侵袭和转移性疾病的高发病率。”

如何保持健康的微生物群?

在实验中,Rutkowski使用了强力的抗生素以破坏小鼠的天然肠道细菌,但她强调抗生素并不危险,乳腺癌患者或需要抗生素治疗感染的任何人都不应避免使用抗生素。毕竟,小鼠不是人,而且需要做更多的研究来确定慢性抗生素的使用是否与癌症的产生相关。在这项研究中,抗生素仅仅是一种实验手段,一种简单的方法来造成微生物群的长期失衡,类似于个体可能经历的慢性不健康的微生物群。这种效果远比人服用正常疗程的抗生素,甚至是多轮抗生素所产生的效果要夸张得多。

由于Rutkowski的研究,医生最终可能选择操纵微生物群使乳腺癌患者受益。但Rutkowski说,目前的关键信息是维护健康微生物群的重要性。这一发现增加了越来越多的证据,证明健康的微生物群对健康的许多方面都至关重要。

虽然她是癌症研究人员而不是医学博士,但Rutkowski指出,有一些事情被普遍接受可以促进健康的微生物群。“健康的饮食,高纤维,加上运动,睡眠——所有这些都有助于整体健康,”她说。“如果你做了所有这些,理论上,你应该有一个健康的微生物群。我们认为,这与能否很好的治疗乳腺癌密切相关。”

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    2021-10-16 ms8000000752811316

    学习,又涨知识了,谢谢分享

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1061120, encodeId=31c21061120f9, content=学习,又涨知识了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=42a55635142, createdName=ms8000000752811316, createdTime=Sat Oct 16 22:28:44 CST 2021, time=2021-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371242, encodeId=3ec33e124215, content=学习谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4Nd44v3xHnnictn9UpctwtH62EPQ59TMdI9lnqHMgQ16nH7GmGCfpzicsHgjibYVk6vwSpXrC86gMibRkoaIzf5HwSz7/0, createdBy=78cc1691107, createdName=龙胆草, createdTime=Wed Aug 14 08:53:24 CST 2019, time=2019-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371240, encodeId=c7033e124009, content=不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=97, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/07/01/577acf4668c2eb760152040cdd4c4196.jpg, createdBy=dc3f5107879, createdName=最帅小男护, createdTime=Wed Aug 14 07:40:20 CST 2019, time=2019-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371232, encodeId=ee423e1232b2, content=好好好好好好, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/08/29/bbc5cc0eed9b8d17623d2fd49dbdf19a.jpg, createdBy=79522135794, createdName=yjs木玉, createdTime=Wed Aug 14 06:12:34 CST 2019, time=2019-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371225, encodeId=c3cf3e122536, content=不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=95, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/2EVCwc9WmQS6ec99H2TX8ejmR40xYjwrIcrqjAnibV36aicL1sLxc21rhpZnqTOxk33HP44iayEwo6qYXqgZvdRtA/132, createdBy=d0d01573846, createdName=329523732, createdTime=Wed Aug 14 00:41:44 CST 2019, time=2019-08-14, status=1, ipAttribution=)]
    2019-08-14 龙胆草

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  3. [GetPortalCommentsPageByObjectIdResponse(id=1061120, encodeId=31c21061120f9, content=学习,又涨知识了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=42a55635142, createdName=ms8000000752811316, createdTime=Sat Oct 16 22:28:44 CST 2021, time=2021-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371242, encodeId=3ec33e124215, content=学习谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4Nd44v3xHnnictn9UpctwtH62EPQ59TMdI9lnqHMgQ16nH7GmGCfpzicsHgjibYVk6vwSpXrC86gMibRkoaIzf5HwSz7/0, createdBy=78cc1691107, createdName=龙胆草, createdTime=Wed Aug 14 08:53:24 CST 2019, time=2019-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371240, encodeId=c7033e124009, content=不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=97, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/07/01/577acf4668c2eb760152040cdd4c4196.jpg, createdBy=dc3f5107879, createdName=最帅小男护, createdTime=Wed Aug 14 07:40:20 CST 2019, time=2019-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371232, encodeId=ee423e1232b2, content=好好好好好好, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/08/29/bbc5cc0eed9b8d17623d2fd49dbdf19a.jpg, createdBy=79522135794, createdName=yjs木玉, createdTime=Wed Aug 14 06:12:34 CST 2019, time=2019-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=371225, encodeId=c3cf3e122536, content=不错, beContent=null, objectType=article, channel=null, level=null, likeNumber=95, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/2EVCwc9WmQS6ec99H2TX8ejmR40xYjwrIcrqjAnibV36aicL1sLxc21rhpZnqTOxk33HP44iayEwo6qYXqgZvdRtA/132, createdBy=d0d01573846, createdName=329523732, createdTime=Wed Aug 14 00:41:44 CST 2019, time=2019-08-14, status=1, ipAttribution=)]
    2019-08-14 最帅小男护

    不错

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    2019-08-14 yjs木玉

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    2019-08-14 329523732

    不错

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