日本科学家发现可防治胃癌的酶

2016-03-25 Priya Saju 《自然—微生物学》

日本

日本研究人员15日在英国《自然·微生物学》杂志网络版上报告说,他们发现了一种酶,有助防治幽门螺杆菌导致的胃癌

胃癌是人类第二大癌症杀手,尤其在东亚地区多发,日本每年约5万人死于胃癌。大部分胃癌由幽门螺杆菌感染导致。

日本东京大学的研究人员发现,幽门螺杆菌的cagA蛋白质侵入胃细胞后,会和一种名为SHP2的酶结合,引发胃癌。他们发现SHP2还有一种“兄弟”酶SHP1,cagA蛋白质如果和SHP1结合,它的致癌活性就被中和。这表明,SHP1是一种能抑制胃癌发病的酶。

研究人员据此认为,一个人在感染幽门螺杆菌后,这两种酶各自发挥功能的程度会决定他是否会患上胃癌。

研究人员还发现,约10%感染幽门螺杆菌的胃癌患者会同时感染EB病毒(人类疱疹病毒4型)。在感染这种病毒后,胃细胞中SHP1的量会减少,导致cagA蛋白质的致癌活性变强。这也是科学家首次弄清细菌和病毒“联手”致癌的机制。

领导研究的畠山昌则教授认为,如果能找到增强SHP1这种酶功能的物质,将有助于预防胃癌


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    2016-04-08 wushaoling
  3. [GetPortalCommentsPageByObjectIdResponse(id=1802312, encodeId=e3db18023123a, content=<a href='/topic/show?id=acfae485578' target=_blank style='color:#2F92EE;'>#科学家发现#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74855, encryptionId=acfae485578, topicName=科学家发现)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e572480, createdName=旅苦化文_208, createdTime=Thu May 19 07:29:00 CST 2016, time=2016-05-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1775018, encodeId=e47e1e750181c, content=<a href='/topic/show?id=5e9a6094488' target=_blank style='color:#2F92EE;'>#本科#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=60944, encryptionId=5e9a6094488, topicName=本科)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=df2b38746341, createdName=wushaoling, createdTime=Fri Apr 08 22:29:00 CST 2016, time=2016-04-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=74565, encodeId=cae4e4565fe, content=希望造福人类, beContent=null, objectType=article, channel=null, level=null, likeNumber=118, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0a6a1604604, createdName=Gsurgeon, createdTime=Wed Mar 30 07:24:00 CST 2016, time=2016-03-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1294235, encodeId=6ad9129423553, content=<a href='/topic/show?id=ca6e592189b' target=_blank style='color:#2F92EE;'>#日本#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=59218, encryptionId=ca6e592189b, topicName=日本)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f634250, createdName=chentianping, createdTime=Sun Mar 27 00:29:00 CST 2016, time=2016-03-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=73881, encodeId=5104e388123, content=好厉害呢!, beContent=null, objectType=article, channel=null, level=null, likeNumber=135, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f28c1704850, createdName=白兔糖, createdTime=Sat Mar 26 18:27:00 CST 2016, time=2016-03-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=73825, encodeId=0c50e38252f, content=真好, beContent=null, objectType=article, channel=null, level=null, likeNumber=125, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160326/IMG56F5D5A4B6FC67114.jpg, createdBy=82ee1704720, createdName=Medico丶Z, createdTime=Sat Mar 26 08:34:00 CST 2016, time=2016-03-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=73752, encodeId=24b8e37529a, content=日本是胃癌大国,在这一块一直都做得很好, beContent=null, objectType=article, channel=null, level=null, likeNumber=116, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=738d1704566, createdName=心流, createdTime=Fri Mar 25 16:06:00 CST 2016, time=2016-03-25, status=1, ipAttribution=)]
    2016-03-30 Gsurgeon

    希望造福人类

    0

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    2016-03-26 白兔糖

    好厉害呢!

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1802312, encodeId=e3db18023123a, content=<a href='/topic/show?id=acfae485578' target=_blank style='color:#2F92EE;'>#科学家发现#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74855, encryptionId=acfae485578, topicName=科学家发现)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e572480, createdName=旅苦化文_208, createdTime=Thu May 19 07:29:00 CST 2016, time=2016-05-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1775018, encodeId=e47e1e750181c, content=<a href='/topic/show?id=5e9a6094488' target=_blank style='color:#2F92EE;'>#本科#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=60944, encryptionId=5e9a6094488, topicName=本科)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=df2b38746341, createdName=wushaoling, createdTime=Fri Apr 08 22:29:00 CST 2016, time=2016-04-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=74565, encodeId=cae4e4565fe, content=希望造福人类, beContent=null, objectType=article, channel=null, level=null, likeNumber=118, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0a6a1604604, createdName=Gsurgeon, createdTime=Wed Mar 30 07:24:00 CST 2016, time=2016-03-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1294235, encodeId=6ad9129423553, content=<a href='/topic/show?id=ca6e592189b' target=_blank style='color:#2F92EE;'>#日本#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=59218, encryptionId=ca6e592189b, topicName=日本)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f634250, createdName=chentianping, createdTime=Sun Mar 27 00:29:00 CST 2016, time=2016-03-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=73881, encodeId=5104e388123, content=好厉害呢!, beContent=null, objectType=article, channel=null, level=null, likeNumber=135, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f28c1704850, createdName=白兔糖, createdTime=Sat Mar 26 18:27:00 CST 2016, time=2016-03-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=73825, encodeId=0c50e38252f, content=真好, beContent=null, objectType=article, channel=null, level=null, likeNumber=125, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160326/IMG56F5D5A4B6FC67114.jpg, createdBy=82ee1704720, createdName=Medico丶Z, createdTime=Sat Mar 26 08:34:00 CST 2016, time=2016-03-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=73752, encodeId=24b8e37529a, content=日本是胃癌大国,在这一块一直都做得很好, beContent=null, objectType=article, channel=null, level=null, likeNumber=116, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=738d1704566, createdName=心流, createdTime=Fri Mar 25 16:06:00 CST 2016, time=2016-03-25, status=1, ipAttribution=)]
    2016-03-26 Medico丶Z

    真好

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1802312, encodeId=e3db18023123a, content=<a href='/topic/show?id=acfae485578' target=_blank style='color:#2F92EE;'>#科学家发现#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=28, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=74855, encryptionId=acfae485578, topicName=科学家发现)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e572480, createdName=旅苦化文_208, createdTime=Thu May 19 07:29:00 CST 2016, time=2016-05-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1775018, encodeId=e47e1e750181c, content=<a href='/topic/show?id=5e9a6094488' target=_blank style='color:#2F92EE;'>#本科#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=60944, encryptionId=5e9a6094488, topicName=本科)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=df2b38746341, createdName=wushaoling, createdTime=Fri Apr 08 22:29:00 CST 2016, time=2016-04-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=74565, encodeId=cae4e4565fe, content=希望造福人类, beContent=null, objectType=article, channel=null, level=null, likeNumber=118, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0a6a1604604, createdName=Gsurgeon, createdTime=Wed Mar 30 07:24:00 CST 2016, time=2016-03-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1294235, encodeId=6ad9129423553, content=<a href='/topic/show?id=ca6e592189b' target=_blank style='color:#2F92EE;'>#日本#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=59218, encryptionId=ca6e592189b, topicName=日本)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f634250, createdName=chentianping, createdTime=Sun Mar 27 00:29:00 CST 2016, time=2016-03-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=73881, encodeId=5104e388123, content=好厉害呢!, beContent=null, objectType=article, channel=null, level=null, likeNumber=135, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f28c1704850, createdName=白兔糖, createdTime=Sat Mar 26 18:27:00 CST 2016, time=2016-03-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=73825, encodeId=0c50e38252f, content=真好, beContent=null, objectType=article, channel=null, level=null, likeNumber=125, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160326/IMG56F5D5A4B6FC67114.jpg, createdBy=82ee1704720, createdName=Medico丶Z, createdTime=Sat Mar 26 08:34:00 CST 2016, time=2016-03-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=73752, encodeId=24b8e37529a, content=日本是胃癌大国,在这一块一直都做得很好, beContent=null, objectType=article, channel=null, level=null, likeNumber=116, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=738d1704566, createdName=心流, createdTime=Fri Mar 25 16:06:00 CST 2016, time=2016-03-25, status=1, ipAttribution=)]
    2016-03-25 心流

    日本是胃癌大国,在这一块一直都做得很好

    0

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