BJC:微生物可以杀死癌细胞?癌细胞增殖有望被阻止!

2017-06-23 TJU 转化医学网

最新研究结果首次揭示死亡细胞被替代过程,并提出一种缩小肿瘤的新方法。 拉什大学医学中心(Rush University)的一个研究小组本周发表该文章,文章描述了两项突破性的发现。

最新研究结果首次揭示死亡细胞被替代过程,并提出一种缩小肿瘤的新方法。 拉什大学医学中心(Rush University)的一个研究小组本周发表该文章,文章描述了两项突破性的发现。

拉什大学肿瘤学教授兼该研究的领导者Sasha Shafikhani博士 说:“我相信这一发现将对癌症生物学、癌症药物开发以及其他疾病如糖尿病的治疗产生重要影响。”

多年来,Shafikhani实验室一直在研究铜绿假单胞菌(Pseudomonas aeruginosa),一种可能致命的细菌,那些受伤或生病的人易感染此菌。这种致病细菌分泌几种可以引起感染的毒素如ExoT,ExoT可以抑制细胞分裂,并且可以阻碍伤口愈合,也可杀死癌细胞。

Shafikhani指出,研究人员在试图弄清ExoT杀死癌细胞的机制时,偶然的解决了另外一个神秘问题。 至少20年来,医学研究人员一直想知道正常细胞凋亡之前,是如何设法提醒他们的临近细胞更换细胞并补偿它们的死亡,以确保有机体的生存。 Shafikhani的团队发现了“补偿增殖信号传导”(CPS)过程。

研究人员第一次记录了细胞经历CPS的全过程:凋亡细胞会释放含有CrkI蛋白的“微泡”,这些微泡传递给相邻细胞并产生新的细胞,以替代那些正在凋亡的细胞。

细胞凋亡是生命的一部分。人类正常组织代谢过程中,每秒大约有一百万个细胞会通过程序性凋亡(PCD)过程死亡。 细胞凋亡不是唯一的细胞死亡类型,并不是所有的凋亡细胞都具有CPS功能。

不仅如此,Shafikhani和他的同事已经证明,如果他们在CPS期间敲除CrkI蛋白,可以阻止细胞补偿性增殖。铜绿假单胞菌正是利用了该技巧,才能阻止受损组织愈合。

对癌症研究人员来说,这项研究结果是令人兴奋的,因为大多数的癌症药物通过细胞凋亡途径杀死癌细胞。

Shafikhani强调:然而,在癌症治疗中可以利用CPS诱导癌细胞凋亡。是的,癌细胞可以被诱导死亡,但在癌细胞死亡之前,癌细胞会招募附近的癌细胞替代它们,因此药物失去其有效性并且肿瘤持续存在。 但是,如果死亡的癌细胞与相邻的癌细胞之间的沟通被阻止,肿瘤很有可能会消失。

在癌细胞中,需要中断CPS过程,以防止癌细胞的发育;但在其他条件下,可以加强CPS过程以加速组织愈合过程。

梅斯医学小编:

有关微生物甚至寄生虫与癌症的关系,也确实是国际上一个分支。至少目前分为几类:一是寄生虫类,如蛔虫、疟原虫、弓形虫等;二,细菌类,如沙门氏杆菌对肿瘤的治疗作用;三是病毒类,如溶瘤病毒等。以下是一些相关报道:


上面这些研究是不是让大家脑洞大开?关注梅斯医学,下载APP,可以获得不一样的学术体验哦。

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    2017-06-25 yxch36
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  5. [GetPortalCommentsPageByObjectIdResponse(id=1701028, encodeId=0e691e0102868, content=<a href='/topic/show?id=7113e15237a' target=_blank style='color:#2F92EE;'>#癌细胞增殖#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71523, encryptionId=7113e15237a, topicName=癌细胞增殖)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3fb930318282, createdName=hywen7336, createdTime=Mon Dec 18 00:51:00 CST 2017, time=2017-12-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1824785, encodeId=3e261824e85a7, content=<a href='/topic/show?id=702a5065860' target=_blank style='color:#2F92EE;'>#微生物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50658, encryptionId=702a5065860, topicName=微生物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0b7c20, createdName=wjcjjian, createdTime=Mon Jan 01 12:51:00 CST 2018, time=2018-01-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252280, encodeId=f3d112522801c, content=<a href='/topic/show?id=3efee1519b2' target=_blank style='color:#2F92EE;'>#癌细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71519, encryptionId=3efee1519b2, topicName=癌细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cea26, createdName=yxch36, createdTime=Sun Jun 25 11:51:00 CST 2017, time=2017-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1540892, encodeId=9265154089237, content=<a href='/topic/show?id=ba2ee78630b' target=_blank style='color:#2F92EE;'>#细胞增殖#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77863, encryptionId=ba2ee78630b, topicName=细胞增殖)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f58613291856, createdName=晓辰, createdTime=Sun Jun 25 11:51:00 CST 2017, time=2017-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=214827, encodeId=0b7e21482e78, content=小编最牛!啥都知道, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c4a5105539, createdName=lovetcm, createdTime=Sat Jun 24 13:59:19 CST 2017, time=2017-06-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=214672, encodeId=97d52146e256, content=学习了谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=00501987275, createdName=130****4638, createdTime=Sat Jun 24 07:38:31 CST 2017, time=2017-06-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=214581, encodeId=952f21458129, content=好好学习,努力向上, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sat Jun 24 04:34:50 CST 2017, time=2017-06-24, status=1, ipAttribution=)]
    2017-06-24 lovetcm

    小编最牛!啥都知道

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1701028, encodeId=0e691e0102868, content=<a href='/topic/show?id=7113e15237a' target=_blank style='color:#2F92EE;'>#癌细胞增殖#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71523, encryptionId=7113e15237a, topicName=癌细胞增殖)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3fb930318282, createdName=hywen7336, createdTime=Mon Dec 18 00:51:00 CST 2017, time=2017-12-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1824785, encodeId=3e261824e85a7, content=<a href='/topic/show?id=702a5065860' target=_blank style='color:#2F92EE;'>#微生物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50658, encryptionId=702a5065860, topicName=微生物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0b7c20, createdName=wjcjjian, createdTime=Mon Jan 01 12:51:00 CST 2018, time=2018-01-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252280, encodeId=f3d112522801c, content=<a href='/topic/show?id=3efee1519b2' target=_blank style='color:#2F92EE;'>#癌细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71519, encryptionId=3efee1519b2, topicName=癌细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cea26, createdName=yxch36, createdTime=Sun Jun 25 11:51:00 CST 2017, time=2017-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1540892, encodeId=9265154089237, content=<a href='/topic/show?id=ba2ee78630b' target=_blank style='color:#2F92EE;'>#细胞增殖#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77863, encryptionId=ba2ee78630b, topicName=细胞增殖)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f58613291856, createdName=晓辰, createdTime=Sun Jun 25 11:51:00 CST 2017, time=2017-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=214827, encodeId=0b7e21482e78, content=小编最牛!啥都知道, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c4a5105539, createdName=lovetcm, createdTime=Sat Jun 24 13:59:19 CST 2017, time=2017-06-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=214672, encodeId=97d52146e256, content=学习了谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=00501987275, createdName=130****4638, createdTime=Sat Jun 24 07:38:31 CST 2017, time=2017-06-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=214581, encodeId=952f21458129, content=好好学习,努力向上, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sat Jun 24 04:34:50 CST 2017, time=2017-06-24, status=1, ipAttribution=)]
    2017-06-24 130****4638

    学习了谢谢分享

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1701028, encodeId=0e691e0102868, content=<a href='/topic/show?id=7113e15237a' target=_blank style='color:#2F92EE;'>#癌细胞增殖#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71523, encryptionId=7113e15237a, topicName=癌细胞增殖)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3fb930318282, createdName=hywen7336, createdTime=Mon Dec 18 00:51:00 CST 2017, time=2017-12-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1824785, encodeId=3e261824e85a7, content=<a href='/topic/show?id=702a5065860' target=_blank style='color:#2F92EE;'>#微生物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=50658, encryptionId=702a5065860, topicName=微生物)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=0b7c20, createdName=wjcjjian, createdTime=Mon Jan 01 12:51:00 CST 2018, time=2018-01-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1252280, encodeId=f3d112522801c, content=<a href='/topic/show?id=3efee1519b2' target=_blank style='color:#2F92EE;'>#癌细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=27, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=71519, encryptionId=3efee1519b2, topicName=癌细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4cea26, createdName=yxch36, createdTime=Sun Jun 25 11:51:00 CST 2017, time=2017-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1540892, encodeId=9265154089237, content=<a href='/topic/show?id=ba2ee78630b' target=_blank style='color:#2F92EE;'>#细胞增殖#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77863, encryptionId=ba2ee78630b, topicName=细胞增殖)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f58613291856, createdName=晓辰, createdTime=Sun Jun 25 11:51:00 CST 2017, time=2017-06-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=214827, encodeId=0b7e21482e78, content=小编最牛!啥都知道, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c4a5105539, createdName=lovetcm, createdTime=Sat Jun 24 13:59:19 CST 2017, time=2017-06-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=214672, encodeId=97d52146e256, content=学习了谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=00501987275, createdName=130****4638, createdTime=Sat Jun 24 07:38:31 CST 2017, time=2017-06-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=214581, encodeId=952f21458129, content=好好学习,努力向上, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Sat Jun 24 04:34:50 CST 2017, time=2017-06-24, status=1, ipAttribution=)]
    2017-06-24 忠诚向上

    好好学习,努力向上

    0

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