Gut:癌症患者要当心,免疫疗法效果不佳可能是幽门螺杆菌在作怪!

2021-07-13 MedSci原创 MedSci原创

该研究首次揭示了胃部微生物会影响个体对癌症免疫疗法的反应,并且幽门螺杆菌血清学将成为个性化癌症免疫疗法治疗的有力的预测工具。

近日,消化病领域权威杂志Gut上发表了一篇研究文章,在这项研究中,研究人员旨在明确幽门螺杆菌感染是否会抑制癌症免疫疗法的疗效。


 
研究人员首先使用小鼠模型,评估了免疫检查点抑制剂或基于疫苗的免疫疗法是否能有效减少幽门螺杆菌感染小鼠的肿瘤体积。其次,在人体试验中,研究人员评估了幽门螺杆菌血清阳性与非小细胞肺癌(NSCLC)患者程序性细胞死亡蛋白1(PD-1)阻断疗法的疗效之间的相关性。


在植入MC38结肠腺癌或B16-OVA黑色素瘤细胞的小鼠中,研究人员发现接受抗细胞毒性T淋巴细胞相关蛋白4和/或程序性死亡配体1或抗癌疫苗治疗的未感染幽门螺杆菌小鼠的肿瘤体积显著小于那些受感染的小鼠。此外,研究人员观察到,在接受癌症免疫疗法治疗的受感染小鼠的肿瘤中,肿瘤特异性CD8+T细胞的数量和激活状态都有所减少,而与肠道微生物组成无关。此外,通过进行体外共培养试验,研究人员观察到受感染小鼠的树突状细胞可促进肿瘤特异性CD8+T细胞增殖。

幽门螺杆菌血清阳性与NSCLC患者抗PD-1免疫疗法疗效的关系

研究人员在两个独立的队列中进行了回顾性人体临床研究。在第戎队列中,研究人员发现幽门螺杆菌血清阳性与接受抗PD-1治疗的非小细胞肺癌患者存活率降低相关。幽门螺杆菌血清阳性患者的中位生存期为6.7个月,而血清阴性患者的中位生存期为15.4个月(p=0.001)。此外,在蒙特利尔队列中,研究人员发现幽门螺杆菌血清阳性与抗PD-1治疗的NSCLC患者无进展生存期降低相关。
 
由此可见,该研究首次揭示了胃部微生物会影响个体对癌症免疫疗法的反应,并且幽门螺杆菌血清学将成为个性化癌症免疫疗法治疗的有力的预测工具。

原始出处:

Paul Oster.et al.Helicobacter pylori infection has a detrimental impact on the efficacy of cancer immunotherapies.Gut.2021.https://gut.bmj.com/content/early/2021/07/11/gutjnl-2020-323392

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    2021-12-28 kcb069
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    2021-07-14 ms5000001266883663

    #学习#学习

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    2021-07-14 新手区新手

    优秀的研究

    0

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    2021-07-14 tanxingdoctor

    学习了

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1811852, encodeId=32b2181185269, content=<a href='/topic/show?id=751f8889423' target=_blank style='color:#2F92EE;'>#螺杆菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=88894, encryptionId=751f8889423, topicName=螺杆菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=87b1109, createdName=kcb069, createdTime=Tue Dec 28 03:10:47 CST 2021, time=2021-12-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1289728, encodeId=fa361289e28ee, content=<a href='/topic/show?id=cbb8e1356f7' target=_blank style='color:#2F92EE;'>#癌症患者#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71356, encryptionId=cbb8e1356f7, topicName=癌症患者)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=10ba218, createdName=zgwhgch, createdTime=Thu Jul 15 14:10:47 CST 2021, time=2021-07-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=999529, encodeId=37a499952933, content=<a href='/topic/show?id=23e3454e353' target=_blank style='color:#2F92EE;'>#学习#</a>学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=45473, encryptionId=23e3454e353, topicName=学习)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=fbc45433548, createdName=ms5000001266883663, createdTime=Wed Jul 14 21:05:46 CST 2021, time=2021-07-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=999518, encodeId=92f5999518e3, content=优秀的研究, beContent=null, objectType=article, channel=null, level=null, likeNumber=69, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200811/34935bf531b24fcc9ad97977f261b84d/258bb5c512754458868fca3f28f1061b.jpg, createdBy=ef545410182, createdName=新手区新手, createdTime=Wed Jul 14 20:50:00 CST 2021, time=2021-07-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=999283, encodeId=e533999283fa, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zSn0GqHrsfLK1wzJZRTON4gxYUibhUyOypBwMibC4R7SsppicGhz5Ogoy0VVq4CWnqaD2Moeib8RWxI5lOiaVmnxpan/0, createdBy=c53f1730331, createdName=tanxingdoctor, createdTime=Wed Jul 14 07:39:25 CST 2021, time=2021-07-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1047391, encodeId=a886104e39183, content=疗效只是效果的众多方面之一,还要看对患者的获益,包括生活质量等因素共同决定效果的, beContent=null, objectType=article, channel=null, level=null, likeNumber=71, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=CHANGE, createdTime=Wed Jul 14 02:10:47 CST 2021, time=2021-07-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=999248, encodeId=901999924839, content=幽门螺杆菌不得不重视, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=61c21449203, createdName=95246619, createdTime=Tue Jul 13 23:25:06 CST 2021, time=2021-07-13, status=1, ipAttribution=)]
    2021-07-14 CHANGE

    疗效只是效果的众多方面之一,还要看对患者的获益,包括生活质量等因素共同决定效果的

    0

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    2021-07-13 95246619

    幽门螺杆菌不得不重视

    0

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