Antimicrob Agent Ch:新药物猎杀耐药“超级细菌”

2014-12-12 佚名 生物谷

匹兹堡中心疫苗研究大学(CVR)正在研究一种远比传统抗生素更有效地、能抑制抗药性细菌的生长的药物,这些抗药性细菌包括所谓的“超级细菌”——几乎耐受所有现有的抗生素。 结果发表在杂志Antimicrobial Agents and Chemotherapy上,这一研究成果有助推动抗生素发展,由于耐药菌的兴起,抗生素的开发在过去的四十年里受到了很大的限制。 研究论文作者Ronald C. Mo

匹兹堡中心疫苗研究大学(CVR)正在研究一种远比传统抗生素更有效地、能抑制抗药性细菌的生长的药物,这些抗药性细菌包括所谓的“超级细菌”——几乎耐受所有现有的抗生素。

结果发表在杂志Antimicrobial Agents and Chemotherapy上,这一研究成果有助推动抗生素发展,由于耐药菌的兴起,抗生素的开发在过去的四十年里受到了很大的限制。

研究论文作者Ronald C. Montelaro博士说:抗生素的发现和发展产生了重大的影响,然而由于抗生素耐药性的频率越来越高,这些医疗成果的成功正在受到威胁。我们开发威胁最脆弱病人生命的耐药细菌的新防御策略是至关重要的。

每年在美国,至少有200万人感染了耐药细菌,且至少23000人死于这些感染的直接结果。研究人员发现HIV表面蛋白上的尾端有一个氨基酸序列,病毒使用它来“冲进”并感染细胞。 Montelaro博士和他的同事开发出该序列的合成版本同时也是更有效的版本,称为改造化的阳离子抗微生物肽(engineered cationic antimicrobial peptides)即“eCAPs”,也就是说eCAPs可以在实验室环境中进行化学合成。

研究人员在实验室环境中测试两个先导eCAPs,将其与天然抗微生物肽(LL37)和标准抗生素(多粘菌素)对比。科学家使用从西雅图儿童医院儿科囊性纤维化患者肺分离的100个不同的细菌菌株,以及从UPMC住院的成年患者分离42细菌菌株。

天然人抗微生物肽LL37和粘菌素药物每个都抑制临床分离的细菌菌株的生长,抑制率在50%左右,表明细菌较大程度的能对这些药物有耐药性。形成鲜明对比的是,两个先导eCAPS在测试细菌菌株中,约90%的细菌菌株生长受到抑制。

当与一些现有的最佳药物相比,我们惊讶于eCAPs的表现,Montelaro博士说。 但是,我们仍然需要知道细菌产生耐药性之前,eCAPs在多久时间内是有效的。团队挑战高度传染性、致病细菌叫绿脓杆菌,对比传统药物和eCAPs。

该细菌在短短三天对传统药物产生耐药。与此相反,相同的细菌对eCAPs产生耐药性需要25至30天。此外在绿脓杆菌抵抗传统药物后,eCAPs能一样有效杀死绿脓杆菌。研究者计划继续利用实验室和动物模型开发eCAPs,创建毒性最低的、最有效的版本,将来我们可以将它们推动进入到临床试验。

原始出处

Deslouches B1, Steckbeck JD1, Craigo JK1, Doi Y2, Burns JL3, Montelaro RC4.Engineered Cationic Antimicrobial Peptides (eCAPs) to Overcome Multidrug Resistance by ESKAPE Pathogens.Antimicrob Agents Chemother. 2014 Nov 24.

评论区 (5)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1857335, encodeId=2bf0185e33528, content=<a href='/topic/show?id=3f48525849' target=_blank style='color:#2F92EE;'>#CRO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5258, encryptionId=3f48525849, topicName=CRO)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c30265, createdName=jiafufeng@yaho, createdTime=Tue Jun 16 13:36:00 CST 2015, time=2015-06-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2084112, encodeId=aebb20841129a, content=<a href='/topic/show?id=61f411e013b' target=_blank style='color:#2F92EE;'>#Micro#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11701, encryptionId=61f411e013b, topicName=Micro)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d59291, createdName=xjy02, createdTime=Mon Jul 13 11:36:00 CST 2015, time=2015-07-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1923575, encodeId=a25219235e518, content=<a href='/topic/show?id=f9f25864447' target=_blank style='color:#2F92EE;'>#新药物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58644, encryptionId=f9f25864447, topicName=新药物)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIuNQXObUwZmFG3VcZa2uhFq27sY7vfTowUhQCgRj2bj1odUibMF4sFXpuRLf6IE5t5yGVDSiaOoOcQ/132, createdBy=1e622500088, createdName=ms1065684921169360, createdTime=Fri Sep 18 16:36:00 CST 2015, time=2015-09-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1779478, encodeId=8dcf1e7947809, content=<a href='/topic/show?id=481a2094a9' target=_blank style='color:#2F92EE;'>#Agent#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2094, encryptionId=481a2094a9, topicName=Agent)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b05b180, createdName=grace5700, createdTime=Fri Jun 26 21:36:00 CST 2015, time=2015-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1321647, encodeId=eabb132164ed8, content=<a href='/topic/show?id=64049291048' target=_blank style='color:#2F92EE;'>#超级细菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=92910, encryptionId=64049291048, topicName=超级细菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ea13490, createdName=xqptu, createdTime=Sun Dec 14 00:36:00 CST 2014, time=2014-12-14, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1857335, encodeId=2bf0185e33528, content=<a href='/topic/show?id=3f48525849' target=_blank style='color:#2F92EE;'>#CRO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5258, encryptionId=3f48525849, topicName=CRO)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c30265, createdName=jiafufeng@yaho, createdTime=Tue Jun 16 13:36:00 CST 2015, time=2015-06-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2084112, encodeId=aebb20841129a, content=<a href='/topic/show?id=61f411e013b' target=_blank style='color:#2F92EE;'>#Micro#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11701, encryptionId=61f411e013b, topicName=Micro)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d59291, createdName=xjy02, createdTime=Mon Jul 13 11:36:00 CST 2015, time=2015-07-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1923575, encodeId=a25219235e518, content=<a href='/topic/show?id=f9f25864447' target=_blank style='color:#2F92EE;'>#新药物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58644, encryptionId=f9f25864447, topicName=新药物)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIuNQXObUwZmFG3VcZa2uhFq27sY7vfTowUhQCgRj2bj1odUibMF4sFXpuRLf6IE5t5yGVDSiaOoOcQ/132, createdBy=1e622500088, createdName=ms1065684921169360, createdTime=Fri Sep 18 16:36:00 CST 2015, time=2015-09-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1779478, encodeId=8dcf1e7947809, content=<a href='/topic/show?id=481a2094a9' target=_blank style='color:#2F92EE;'>#Agent#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2094, encryptionId=481a2094a9, topicName=Agent)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b05b180, createdName=grace5700, createdTime=Fri Jun 26 21:36:00 CST 2015, time=2015-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1321647, encodeId=eabb132164ed8, content=<a href='/topic/show?id=64049291048' target=_blank style='color:#2F92EE;'>#超级细菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=92910, encryptionId=64049291048, topicName=超级细菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ea13490, createdName=xqptu, createdTime=Sun Dec 14 00:36:00 CST 2014, time=2014-12-14, status=1, ipAttribution=)]
    2015-07-13 xjy02
  3. [GetPortalCommentsPageByObjectIdResponse(id=1857335, encodeId=2bf0185e33528, content=<a href='/topic/show?id=3f48525849' target=_blank style='color:#2F92EE;'>#CRO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5258, encryptionId=3f48525849, topicName=CRO)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c30265, createdName=jiafufeng@yaho, createdTime=Tue Jun 16 13:36:00 CST 2015, time=2015-06-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2084112, encodeId=aebb20841129a, content=<a href='/topic/show?id=61f411e013b' target=_blank style='color:#2F92EE;'>#Micro#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11701, encryptionId=61f411e013b, topicName=Micro)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d59291, createdName=xjy02, createdTime=Mon Jul 13 11:36:00 CST 2015, time=2015-07-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1923575, encodeId=a25219235e518, content=<a href='/topic/show?id=f9f25864447' target=_blank style='color:#2F92EE;'>#新药物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58644, encryptionId=f9f25864447, topicName=新药物)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIuNQXObUwZmFG3VcZa2uhFq27sY7vfTowUhQCgRj2bj1odUibMF4sFXpuRLf6IE5t5yGVDSiaOoOcQ/132, createdBy=1e622500088, createdName=ms1065684921169360, createdTime=Fri Sep 18 16:36:00 CST 2015, time=2015-09-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1779478, encodeId=8dcf1e7947809, content=<a href='/topic/show?id=481a2094a9' target=_blank style='color:#2F92EE;'>#Agent#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2094, encryptionId=481a2094a9, topicName=Agent)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b05b180, createdName=grace5700, createdTime=Fri Jun 26 21:36:00 CST 2015, time=2015-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1321647, encodeId=eabb132164ed8, content=<a href='/topic/show?id=64049291048' target=_blank style='color:#2F92EE;'>#超级细菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=92910, encryptionId=64049291048, topicName=超级细菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ea13490, createdName=xqptu, createdTime=Sun Dec 14 00:36:00 CST 2014, time=2014-12-14, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1857335, encodeId=2bf0185e33528, content=<a href='/topic/show?id=3f48525849' target=_blank style='color:#2F92EE;'>#CRO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5258, encryptionId=3f48525849, topicName=CRO)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c30265, createdName=jiafufeng@yaho, createdTime=Tue Jun 16 13:36:00 CST 2015, time=2015-06-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2084112, encodeId=aebb20841129a, content=<a href='/topic/show?id=61f411e013b' target=_blank style='color:#2F92EE;'>#Micro#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11701, encryptionId=61f411e013b, topicName=Micro)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d59291, createdName=xjy02, createdTime=Mon Jul 13 11:36:00 CST 2015, time=2015-07-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1923575, encodeId=a25219235e518, content=<a href='/topic/show?id=f9f25864447' target=_blank style='color:#2F92EE;'>#新药物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58644, encryptionId=f9f25864447, topicName=新药物)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIuNQXObUwZmFG3VcZa2uhFq27sY7vfTowUhQCgRj2bj1odUibMF4sFXpuRLf6IE5t5yGVDSiaOoOcQ/132, createdBy=1e622500088, createdName=ms1065684921169360, createdTime=Fri Sep 18 16:36:00 CST 2015, time=2015-09-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1779478, encodeId=8dcf1e7947809, content=<a href='/topic/show?id=481a2094a9' target=_blank style='color:#2F92EE;'>#Agent#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2094, encryptionId=481a2094a9, topicName=Agent)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b05b180, createdName=grace5700, createdTime=Fri Jun 26 21:36:00 CST 2015, time=2015-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1321647, encodeId=eabb132164ed8, content=<a href='/topic/show?id=64049291048' target=_blank style='color:#2F92EE;'>#超级细菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=92910, encryptionId=64049291048, topicName=超级细菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ea13490, createdName=xqptu, createdTime=Sun Dec 14 00:36:00 CST 2014, time=2014-12-14, status=1, ipAttribution=)]
    2015-06-26 grace5700
  5. [GetPortalCommentsPageByObjectIdResponse(id=1857335, encodeId=2bf0185e33528, content=<a href='/topic/show?id=3f48525849' target=_blank style='color:#2F92EE;'>#CRO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5258, encryptionId=3f48525849, topicName=CRO)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c30265, createdName=jiafufeng@yaho, createdTime=Tue Jun 16 13:36:00 CST 2015, time=2015-06-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2084112, encodeId=aebb20841129a, content=<a href='/topic/show?id=61f411e013b' target=_blank style='color:#2F92EE;'>#Micro#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11701, encryptionId=61f411e013b, topicName=Micro)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d59291, createdName=xjy02, createdTime=Mon Jul 13 11:36:00 CST 2015, time=2015-07-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1923575, encodeId=a25219235e518, content=<a href='/topic/show?id=f9f25864447' target=_blank style='color:#2F92EE;'>#新药物#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=94, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58644, encryptionId=f9f25864447, topicName=新药物)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTIuNQXObUwZmFG3VcZa2uhFq27sY7vfTowUhQCgRj2bj1odUibMF4sFXpuRLf6IE5t5yGVDSiaOoOcQ/132, createdBy=1e622500088, createdName=ms1065684921169360, createdTime=Fri Sep 18 16:36:00 CST 2015, time=2015-09-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1779478, encodeId=8dcf1e7947809, content=<a href='/topic/show?id=481a2094a9' target=_blank style='color:#2F92EE;'>#Agent#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=89, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2094, encryptionId=481a2094a9, topicName=Agent)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b05b180, createdName=grace5700, createdTime=Fri Jun 26 21:36:00 CST 2015, time=2015-06-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1321647, encodeId=eabb132164ed8, content=<a href='/topic/show?id=64049291048' target=_blank style='color:#2F92EE;'>#超级细菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=92910, encryptionId=64049291048, topicName=超级细菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ea13490, createdName=xqptu, createdTime=Sun Dec 14 00:36:00 CST 2014, time=2014-12-14, status=1, ipAttribution=)]

相关资讯

研发一种新药,要花掉25亿美元

现在,研发新药的道路已经变得越来越艰难。从寻找新的备选化合物,到层层试验审批,往往要花去十几年时间和大量的金钱,这其中还有很多努力最终会以失败告终。平均要花多少钱才能得到一个成功上市的新药?根据塔夫茨药物研发中心(Tufts Center for the Study of Drug Development ,CSDD)最近的报告,这个数字现在已经增长到了25亿美元以上。 该数据分析报告是对200

BBC:治疗白血病临床试验药物问世!

BBC新闻公布英国卡迪夫大学研发药物——Gazyvaro治疗白血病正式获批,进入临床试验阶段。据研究者称,该药可通过抑制癌细胞分裂增殖,将白血病患者死亡率显著降低59%。 两个月前,官方对该药采取拒绝审批的态度。然而,美国国家卫生研究院和服务中心在该药取得进一步研究并对药价进行制约之后,临时批准了。 在西方国家中,慢性淋巴性白血病(CLL)是成人血癌中的最常见的一种疾病。在英国

不再高不可攀,Abbvie新药或将撼动吉利德Sovaldi霸主地位

如果你要问近两年生物医药产业药物研发哪家强?相信99%的分析人士都会提到吉利德公司的Sovaldi。这种药物能够在仅仅数月中将90%的丙肝患者治疗痊愈,因为在上市的短短一段时间内就席卷了整个丙肝医药市场,成为了这一领域当之无愧的霸主。而Sovaldi的拥有者吉利德公司也凭此跻身一线药物研发公司,风光一时无两。 不过,众多生物医药巨头并不甘心丙肝药物市场里任凭吉利德公司一家独大。最近艾伯维公司传来

一种有前途的治疗复发的多发性硬化症的新药(视频)

在2014年的波士顿多发性硬化症会议上,来自斯克里普斯研究所的研究人员陈述了复发的多发性硬化症的候选药物一项6个月的二期临床研究结果。药物 RPC-1063首次由美国国立卫生研究院(NIH)分子库斯克里普斯的佛罗里达分子筛选中心发现,加州斯克里普斯合成以及进一步开发。RPC-1063的作用机制是通过1-磷酸鞘氨醇受体调节。在一项258名复发的多发性硬化症患者的研究中,那些接受药物治疗

糖尿病新药omarigliptin一周口服一次 III期结果逐步揭晓

近日,默沙东已向日本药品和医疗器械局(PMDA)提交了实验性降糖药omarigliptin的新药申请(NDA),标志着全球首个监管申请。 omarigliptin是一种每周一次的DPP-4抑制剂,开发用于2型糖尿病的治疗。在今年9月公布的首个III期临床中,omarigliptin疗效媲美默沙东自身热销的每日一次口服糖尿病药物Januvia(捷诺维,sitagliptin,西他列汀)。 Jan

新药研发中国**人,鞠躬尽瘁只为宫颈癌疫苗

众所周知,宫颈癌是由病毒感染而引发的癌症,是一种常见的女性癌症,发病率仅次于乳腺癌。每年,全世界约有50万女性被诊断为宫颈癌,其中25万多人死亡。 早期,许多流行病学家指出,如早婚、多产及复杂的性关系都与宫颈癌的发生有关,因此逐步形成子宫颈癌是性传染病的观念。直到20世纪60年代,宫颈癌的病因研究仍围绕着淋病、梅毒、滴虫等病原体打转,没有突破。 1980年,德国科学家Zur Hause