Nature:用于革兰氏阴性菌的新型抗生素

2019-10-26 海北 MedSci原创

目前,我们迫切需要针对革兰氏阴性菌的新型抗生素,这些菌已经对已有的碳青霉烯和第三代头孢菌素具有耐药性,连最后一种抗生素也已经失去了大部分功效。

目前,我们迫切需要针对革兰氏阴性菌的新型抗生素,这些菌已经对已有的碳青霉烯和第三代头孢菌素具有耐药性,连最后一种抗生素也已经失去了大部分功效。

最近,研究人员描述了一类受天然产物骨架启发而合成的抗生素。这些嵌合抗生素含有β-发夹肽大环,其与天然产物多粘菌素和粘菌素家族中发现的大环相连。

研究表明,它们具有杀菌作用,其作用机理涉及与脂多糖和β-桶折叠复合物(BAM)的主要成分BamA结合,而BamA是β-桶蛋白质折叠并插入到革兰氏阴性菌的外膜中所必须的。

广泛优化的衍生物显示出对多重耐药性病原体(包括ESKAPE病原体的所有革兰氏阴性成员)有效的活性。这些衍生物在体外和体内也显示出良好的药物特性,并克服了粘菌素抗性。

目前,主要候选药物正在临床前毒理学研究中,如果成功,它将使临床研究取得进展,有可能解决革兰氏阴性病原体致命的感染,从而解决相当大的未满足的医疗需求。


原始出处:

Anatol Luther et al. Chimeric peptidomimetic antibiotics against Gram-negative bacteria. Nature, 2019; DOI: 10.1038/s41586-019-1665-6


本文系梅斯医学(MedSci)原创编译整理,转载需授权

版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (4)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1883948, encodeId=d4811883948a6, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Dec 11 18:24:00 CST 2019, time=2019-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1819768, encodeId=64891819e6809, content=<a href='/topic/show?id=a5f999862cd' target=_blank style='color:#2F92EE;'>#革兰氏#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99862, encryptionId=a5f999862cd, topicName=革兰氏)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3860283, createdName=whmdzju, createdTime=Fri May 08 08:24:00 CST 2020, time=2020-05-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1676872, encodeId=fde516e687204, content=<a href='/topic/show?id=63825823146' target=_blank style='color:#2F92EE;'>#新型抗生素#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58231, encryptionId=63825823146, topicName=新型抗生素)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8bab27396846, createdName=marongnuan, createdTime=Sun Jun 14 11:24:00 CST 2020, time=2020-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1537607, encodeId=8320153e607c6, content=<a href='/topic/show?id=bde599869c0' target=_blank style='color:#2F92EE;'>#革兰氏阴性菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99869, encryptionId=bde599869c0, topicName=革兰氏阴性菌)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=790e12885737, createdName=yanghan, createdTime=Mon Oct 28 05:24:00 CST 2019, time=2019-10-28, status=1, ipAttribution=)]
    2019-12-11 liye789132251
  2. [GetPortalCommentsPageByObjectIdResponse(id=1883948, encodeId=d4811883948a6, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Dec 11 18:24:00 CST 2019, time=2019-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1819768, encodeId=64891819e6809, content=<a href='/topic/show?id=a5f999862cd' target=_blank style='color:#2F92EE;'>#革兰氏#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99862, encryptionId=a5f999862cd, topicName=革兰氏)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3860283, createdName=whmdzju, createdTime=Fri May 08 08:24:00 CST 2020, time=2020-05-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1676872, encodeId=fde516e687204, content=<a href='/topic/show?id=63825823146' target=_blank style='color:#2F92EE;'>#新型抗生素#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58231, encryptionId=63825823146, topicName=新型抗生素)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8bab27396846, createdName=marongnuan, createdTime=Sun Jun 14 11:24:00 CST 2020, time=2020-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1537607, encodeId=8320153e607c6, content=<a href='/topic/show?id=bde599869c0' target=_blank style='color:#2F92EE;'>#革兰氏阴性菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99869, encryptionId=bde599869c0, topicName=革兰氏阴性菌)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=790e12885737, createdName=yanghan, createdTime=Mon Oct 28 05:24:00 CST 2019, time=2019-10-28, status=1, ipAttribution=)]
    2020-05-08 whmdzju
  3. [GetPortalCommentsPageByObjectIdResponse(id=1883948, encodeId=d4811883948a6, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Dec 11 18:24:00 CST 2019, time=2019-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1819768, encodeId=64891819e6809, content=<a href='/topic/show?id=a5f999862cd' target=_blank style='color:#2F92EE;'>#革兰氏#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99862, encryptionId=a5f999862cd, topicName=革兰氏)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3860283, createdName=whmdzju, createdTime=Fri May 08 08:24:00 CST 2020, time=2020-05-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1676872, encodeId=fde516e687204, content=<a href='/topic/show?id=63825823146' target=_blank style='color:#2F92EE;'>#新型抗生素#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58231, encryptionId=63825823146, topicName=新型抗生素)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8bab27396846, createdName=marongnuan, createdTime=Sun Jun 14 11:24:00 CST 2020, time=2020-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1537607, encodeId=8320153e607c6, content=<a href='/topic/show?id=bde599869c0' target=_blank style='color:#2F92EE;'>#革兰氏阴性菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99869, encryptionId=bde599869c0, topicName=革兰氏阴性菌)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=790e12885737, createdName=yanghan, createdTime=Mon Oct 28 05:24:00 CST 2019, time=2019-10-28, status=1, ipAttribution=)]
  4. [GetPortalCommentsPageByObjectIdResponse(id=1883948, encodeId=d4811883948a6, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Wed Dec 11 18:24:00 CST 2019, time=2019-12-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1819768, encodeId=64891819e6809, content=<a href='/topic/show?id=a5f999862cd' target=_blank style='color:#2F92EE;'>#革兰氏#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=42, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99862, encryptionId=a5f999862cd, topicName=革兰氏)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3860283, createdName=whmdzju, createdTime=Fri May 08 08:24:00 CST 2020, time=2020-05-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1676872, encodeId=fde516e687204, content=<a href='/topic/show?id=63825823146' target=_blank style='color:#2F92EE;'>#新型抗生素#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58231, encryptionId=63825823146, topicName=新型抗生素)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8bab27396846, createdName=marongnuan, createdTime=Sun Jun 14 11:24:00 CST 2020, time=2020-06-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1537607, encodeId=8320153e607c6, content=<a href='/topic/show?id=bde599869c0' target=_blank style='color:#2F92EE;'>#革兰氏阴性菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=99869, encryptionId=bde599869c0, topicName=革兰氏阴性菌)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=790e12885737, createdName=yanghan, createdTime=Mon Oct 28 05:24:00 CST 2019, time=2019-10-28, status=1, ipAttribution=)]

相关资讯

Lancet Infect Dis:中国社区药房无处方处方药销售情况仍不容乐观

研究发现,中国社区药店的无处方处方药销售情况仍较为普遍,需要采取多方面的措施,包括管制措施、专业培训和公共卫生教育,规范处方药,特别是抗生素的销售

J Endod:牙髓再生中应用抗生素改变巨噬细胞对细菌感染的免疫反应

环丙沙星、阿莫西林和甲硝唑是应用于牙髓再生治疗(REP)中的抗生素。尽管它们的抗菌特性已得到很好的证明,但是它们的抗菌活性对宿主巨噬细胞的免疫反应以及尖周愈合的影响还未可知。因此,这篇研究有2个目的:(1)检测在联合应用环丙沙星或阿莫西林与甲硝唑时巨噬细胞对细菌感染的免疫反应,(2)通过这些巨噬细胞制备的条件培养基模拟尖周微环境,检测尖周成纤维细胞对细胞外基质(ECM)表达的影响。

MGB Biopharma宣布其速效强效抗生素MGB-BP-3治疗艰难梭菌相关性腹泻的IIa期临床数据

MGB Biopharma已宣布其IIa期临床研究的最新进展,该研究评估了艰难梭菌相关性腹泻(CDAD)患者中MGB-BP-3递增剂量的安全性、耐受性和疗效。

JAMA Oncology:抗生素降低了采用免疫疗法的癌症患者的存活率

如果癌症患者近期服用抗生素,他们对免疫疗法的反应率和整体存活率会更差。该研究结果来自英国近200名癌症患者的一项研究,患者采用了检查点抑制剂疗法。

Science:警惕“病从口入”!科学家绘制全球食用动物耐药性趋势图

过度和不加选择地使用抗生素会产生严重的后果。全世界耐药性细菌的比例正在迅速增加。药物正在失去效力,这对动物的健康有重要的影响,同时对人类健康也有潜在的威胁。

JAMA Oncol:免疫治疗前使用抗生素,或显著降低癌症患者的生存率

近日一项研究发现,接受免疫治疗的癌症患者如果近期使用过抗生素的话,病情将更加糟糕,并导致其治疗效果和生存率显着下降。