Advanced Materials:阎锡蕴/范克龙团队开发多肽抗氧化纳米酶,用于治疗缺血性脑卒中

2023-03-21 “生物世界”公众号 “生物世界”公众号 发表于上海

纳米尺度的治疗体系使纳米酶在较长时间内发挥级联类酶活性,克服了目前小分子药物半衰期短、生物利用度低和严重毒副作用导致疗效有限的问题,为缺血性脑卒中的综合、安全、有效治疗提供了新思路。

纳米酶作为2022年十大新兴技术之一(IUPAC,国际纯粹与应用化学联合会发布),它集天然催化与人工催化优势于一身,具有类似于天然酶的酶促反应动力学,可以作为酶的替代品用于人类健康;又具有稳定性高、成本低廉、易于规模化生产的特点,克服了天然酶的局限性;同时还具有纳米材料的可设计性和多功能性,在工业、医学、生物等领域展现出巨大的应用潜力。

如何利用纳米酶的独特性(如多酶活性、多功能和底物催化),创造一些新技术,解决一些天然酶或其它催化剂所不能为之的问题,是纳米酶领域当前面临的重要课题。

近日,中科院生物物理所阎锡蕴院士、范克龙研究员团队在 Advanced Materials 期刊发布了题为:A Thrombin-Activated Peptide-Templated Nanozyme for Remedying Ischemic Stroke via Thrombolytic and Neuroprotective Actions 的研究论文。

研究团队针对缺血性脑卒中致死致残率高、缺乏高效低毒治疗药物的难题,发明了一种多肽抗氧化纳米酶,其中的多肽能够靶向溶解血栓,MnO2纳米酶具有超氧化物歧化酶(SOD)和过氧化氢酶(CAT)催化活性,这两种酶的级联催化反应能够清除病灶区域的活性氧(ROS)。

动物实验显示,多肽抗氧化纳米酶在有效溶栓的同时,还能修复缺血再灌注损伤,有效缓解了脑组织缺血部位的氧化应激,减少了纳米酶的非特异性吸附和毒副作用,为缺血性脑卒中的治疗提供了新思路。

这种新型纳米酶的设计理念:是将两种多肽链混合自组装形成直径为15nm的纳米颗粒,其表面多肽包含靶向溶栓模块、凝血酶响应模块、血脑屏障穿越-脑缺血组织神经元靶向模块,并以内核的金属离子亲和肽为模板通过生物矿化合成MnO2纳米酶,结果表明,此多肽抗氧化纳米酶具有与天然酶相当的SOD(>2100 U/mg)和CAT(~300 U/mg)催化活性。这种多肽抗氧化纳米酶的工作原理是依次从外向内发挥靶向溶栓和清除ROS的功能。

首先,外表面的多肽能够特异结合血栓中的纤维蛋白,在凝血酶响应下释放溶栓肽,从而启动溶栓活性,进而靶向血脑屏障转铁蛋白受体,进入缺血缺氧脑组织,在此纳米酶发挥SOD和CAT双酶级联效应,即SOD将O2·-转化为H2O2和H2O,CAT将高细胞毒性的H2O2最终转化为无毒性的H2O和O2,安全有效地消除ROS。在小鼠和大鼠缺血性脑卒中模型中表现出显着的神经功能恢复,梗死体积减少超过90%,治疗效果明显优于临床应用的溶栓药组织型纤溶酶原激活剂(tPA)和神经保护药伊达拉奉(Eda)。其原因是多肽具有的多功能性的优势使纳米酶精准靶向脑卒中缺血组织,保证了生物安全性,同时纳米尺度的治疗体系使纳米酶在较长时间内发挥级联类酶活性,克服了目前小分子药物半衰期短、生物利用度低和严重毒副作用导致疗效有限的问题,为缺血性脑卒中的综合、安全、有效治疗提供了新思路。

凝血酶响应型多肽抗氧化纳米酶的合成及治疗缺血性脑卒中原理示意图

中国科学院生物物理研究所阎锡蕴院士和范克龙研究员为论文共同通讯作者,中国科学院生物物理研究所王卓然博士、博士研究生赵越为共同第一作者。该研究得到了国家自然科学基金、国家重点研发计划、中国科学院创新交叉团队、中国科学院青年创新促进会、中国博士后科学基金及北京市科技新星计划的资助。

原始出处:

Zhuoran Wang, Yue Zhao, Yaxin Hou, et al. A Thrombin-Activated Peptide-Templated Nanozyme for Remedying Ischemic Stroke via Thrombolytic and Neuroprotective Actions. Advanced Materials, 2023.

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  1. [GetPortalCommentsPageByObjectIdResponse(id=2121002, encodeId=6baf2121002f7, content=针对<a href='/topic/show?id=93f6e937941' target=_blank style='color:#2F92EE;'>#缺血性脑卒中#</a>致死致残率高、缺乏高效低毒治疗药物的难题,发明了一种多肽抗氧化<a href='/topic/show?id=77b1e7466c0' target=_blank style='color:#2F92EE;'>#纳米酶#</a>,其中的多肽能够靶向溶解<a href='/topic/show?id=b7fc89083ad' target=_blank style='color:#2F92EE;'>#血栓#</a>,<a href='/topic/show?id=0c9610568418' target=_blank style='color:#2F92EE;'>#MnO2纳米酶#</a>具有<a href='/topic/show?id=62a910455418' target=_blank style='color:#2F92EE;'>#超氧化物歧化酶#</a>(SOD)和<a href='/topic/show?id=4e739409289' target=_blank style='color:#2F92EE;'>#过氧化氢酶#</a>(CAT)催化活性,这两种酶的级联催化反应能够清除病灶区域的<a href='/topic/show?id=b79c6521eb7' target=_blank style='color:#2F92EE;'>#活性氧#</a>(ROS)。, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79379, encryptionId=93f6e937941, topicName=缺血性脑卒中), TopicDto(id=77466, encryptionId=77b1e7466c0, topicName=纳米酶), TopicDto(id=89083, encryptionId=b7fc89083ad, topicName=血栓), TopicDto(id=105684, encryptionId=0c9610568418, topicName=MnO2纳米酶), TopicDto(id=104554, encryptionId=62a910455418, topicName=超氧化物歧化酶), TopicDto(id=94092, encryptionId=4e739409289, topicName=过氧化氢酶), TopicDto(id=65217, encryptionId=b79c6521eb7, topicName=活性氧)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/Random/55971dc507c93968175ce7cc1e177b372a83869f.jpg, createdBy=f63e4754896, createdName=侠胆医心, createdTime=Wed Mar 22 08:30:59 CST 2023, time=2023-03-22, status=1, ipAttribution=上海), GetPortalCommentsPageByObjectIdResponse(id=2120948, encodeId=5e922120948dd, content=不错,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4dfa6526517, createdName=仁术2023, createdTime=Wed Mar 22 06:26:31 CST 2023, time=2023-03-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2120947, encodeId=a4d7212094e6b, content=酶的替代品用于人类健康, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2d3d3015017, createdName=jshbyywk2008, createdTime=Wed Mar 22 06:23:34 CST 2023, time=2023-03-22, status=1, ipAttribution=河北省), GetPortalCommentsPageByObjectIdResponse(id=2120933, encodeId=fa792120933eb, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Tue Mar 21 23:56:12 CST 2023, time=2023-03-21, status=1, ipAttribution=浙江省), GetPortalCommentsPageByObjectIdResponse(id=2120906, encodeId=a4092120906ef, content=纳米技术与医学的结合是未来医学的发展道路之一, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a6b52200566, createdName=120b31f2m12暂无昵称, createdTime=Tue Mar 21 22:17:22 CST 2023, time=2023-03-21, status=1, ipAttribution=上海), GetPortalCommentsPageByObjectIdResponse(id=2120895, encodeId=7c83212089567, content=认真学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6EF3hKja8nER8RMzxQdria9eCYFhgLTLsDOeqnvIYdeLDz5eP6EnicLuE5gibiawgno4zUA0jAR7Nbtp2llQ9fs3Mk/0, createdBy=278f1986883, createdName=医鸣惊人, createdTime=Tue Mar 21 21:34:59 CST 2023, time=2023-03-21, status=1, ipAttribution=山西省)]
    2023-03-22 侠胆医心 来自上海

    针对#缺血性脑卒中#致死致残率高、缺乏高效低毒治疗药物的难题,发明了一种多肽抗氧化#纳米酶#,其中的多肽能够靶向溶解#血栓##MnO2纳米酶#具有#超氧化物歧化酶#(SOD)和#过氧化氢酶#(CAT)催化活性,这两种酶的级联催化反应能够清除病灶区域的#活性氧#(ROS)。

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=2121002, encodeId=6baf2121002f7, content=针对<a href='/topic/show?id=93f6e937941' target=_blank style='color:#2F92EE;'>#缺血性脑卒中#</a>致死致残率高、缺乏高效低毒治疗药物的难题,发明了一种多肽抗氧化<a href='/topic/show?id=77b1e7466c0' target=_blank style='color:#2F92EE;'>#纳米酶#</a>,其中的多肽能够靶向溶解<a href='/topic/show?id=b7fc89083ad' target=_blank style='color:#2F92EE;'>#血栓#</a>,<a href='/topic/show?id=0c9610568418' target=_blank style='color:#2F92EE;'>#MnO2纳米酶#</a>具有<a href='/topic/show?id=62a910455418' target=_blank style='color:#2F92EE;'>#超氧化物歧化酶#</a>(SOD)和<a href='/topic/show?id=4e739409289' target=_blank style='color:#2F92EE;'>#过氧化氢酶#</a>(CAT)催化活性,这两种酶的级联催化反应能够清除病灶区域的<a href='/topic/show?id=b79c6521eb7' target=_blank style='color:#2F92EE;'>#活性氧#</a>(ROS)。, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79379, encryptionId=93f6e937941, topicName=缺血性脑卒中), TopicDto(id=77466, encryptionId=77b1e7466c0, topicName=纳米酶), TopicDto(id=89083, encryptionId=b7fc89083ad, topicName=血栓), TopicDto(id=105684, encryptionId=0c9610568418, topicName=MnO2纳米酶), TopicDto(id=104554, encryptionId=62a910455418, topicName=超氧化物歧化酶), TopicDto(id=94092, encryptionId=4e739409289, topicName=过氧化氢酶), TopicDto(id=65217, encryptionId=b79c6521eb7, topicName=活性氧)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/Random/55971dc507c93968175ce7cc1e177b372a83869f.jpg, createdBy=f63e4754896, createdName=侠胆医心, createdTime=Wed Mar 22 08:30:59 CST 2023, time=2023-03-22, status=1, ipAttribution=上海), GetPortalCommentsPageByObjectIdResponse(id=2120948, encodeId=5e922120948dd, content=不错,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4dfa6526517, createdName=仁术2023, createdTime=Wed Mar 22 06:26:31 CST 2023, time=2023-03-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2120947, encodeId=a4d7212094e6b, content=酶的替代品用于人类健康, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2d3d3015017, createdName=jshbyywk2008, createdTime=Wed Mar 22 06:23:34 CST 2023, time=2023-03-22, status=1, ipAttribution=河北省), GetPortalCommentsPageByObjectIdResponse(id=2120933, encodeId=fa792120933eb, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Tue Mar 21 23:56:12 CST 2023, time=2023-03-21, status=1, ipAttribution=浙江省), GetPortalCommentsPageByObjectIdResponse(id=2120906, encodeId=a4092120906ef, content=纳米技术与医学的结合是未来医学的发展道路之一, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a6b52200566, createdName=120b31f2m12暂无昵称, createdTime=Tue Mar 21 22:17:22 CST 2023, time=2023-03-21, status=1, ipAttribution=上海), GetPortalCommentsPageByObjectIdResponse(id=2120895, encodeId=7c83212089567, content=认真学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6EF3hKja8nER8RMzxQdria9eCYFhgLTLsDOeqnvIYdeLDz5eP6EnicLuE5gibiawgno4zUA0jAR7Nbtp2llQ9fs3Mk/0, createdBy=278f1986883, createdName=医鸣惊人, createdTime=Tue Mar 21 21:34:59 CST 2023, time=2023-03-21, status=1, ipAttribution=山西省)]
    2023-03-22 仁术2023

    不错,学习了。

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=2121002, encodeId=6baf2121002f7, content=针对<a href='/topic/show?id=93f6e937941' target=_blank style='color:#2F92EE;'>#缺血性脑卒中#</a>致死致残率高、缺乏高效低毒治疗药物的难题,发明了一种多肽抗氧化<a href='/topic/show?id=77b1e7466c0' target=_blank style='color:#2F92EE;'>#纳米酶#</a>,其中的多肽能够靶向溶解<a href='/topic/show?id=b7fc89083ad' target=_blank style='color:#2F92EE;'>#血栓#</a>,<a href='/topic/show?id=0c9610568418' target=_blank style='color:#2F92EE;'>#MnO2纳米酶#</a>具有<a href='/topic/show?id=62a910455418' target=_blank style='color:#2F92EE;'>#超氧化物歧化酶#</a>(SOD)和<a href='/topic/show?id=4e739409289' target=_blank style='color:#2F92EE;'>#过氧化氢酶#</a>(CAT)催化活性,这两种酶的级联催化反应能够清除病灶区域的<a href='/topic/show?id=b79c6521eb7' target=_blank style='color:#2F92EE;'>#活性氧#</a>(ROS)。, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79379, encryptionId=93f6e937941, topicName=缺血性脑卒中), TopicDto(id=77466, encryptionId=77b1e7466c0, topicName=纳米酶), TopicDto(id=89083, encryptionId=b7fc89083ad, topicName=血栓), TopicDto(id=105684, encryptionId=0c9610568418, topicName=MnO2纳米酶), TopicDto(id=104554, encryptionId=62a910455418, topicName=超氧化物歧化酶), TopicDto(id=94092, encryptionId=4e739409289, topicName=过氧化氢酶), TopicDto(id=65217, encryptionId=b79c6521eb7, topicName=活性氧)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/Random/55971dc507c93968175ce7cc1e177b372a83869f.jpg, createdBy=f63e4754896, createdName=侠胆医心, createdTime=Wed Mar 22 08:30:59 CST 2023, time=2023-03-22, status=1, ipAttribution=上海), GetPortalCommentsPageByObjectIdResponse(id=2120948, encodeId=5e922120948dd, content=不错,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4dfa6526517, createdName=仁术2023, createdTime=Wed Mar 22 06:26:31 CST 2023, time=2023-03-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2120947, encodeId=a4d7212094e6b, content=酶的替代品用于人类健康, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2d3d3015017, createdName=jshbyywk2008, createdTime=Wed Mar 22 06:23:34 CST 2023, time=2023-03-22, status=1, ipAttribution=河北省), GetPortalCommentsPageByObjectIdResponse(id=2120933, encodeId=fa792120933eb, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Tue Mar 21 23:56:12 CST 2023, time=2023-03-21, status=1, ipAttribution=浙江省), GetPortalCommentsPageByObjectIdResponse(id=2120906, encodeId=a4092120906ef, content=纳米技术与医学的结合是未来医学的发展道路之一, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a6b52200566, createdName=120b31f2m12暂无昵称, createdTime=Tue Mar 21 22:17:22 CST 2023, time=2023-03-21, status=1, ipAttribution=上海), GetPortalCommentsPageByObjectIdResponse(id=2120895, encodeId=7c83212089567, content=认真学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6EF3hKja8nER8RMzxQdria9eCYFhgLTLsDOeqnvIYdeLDz5eP6EnicLuE5gibiawgno4zUA0jAR7Nbtp2llQ9fs3Mk/0, createdBy=278f1986883, createdName=医鸣惊人, createdTime=Tue Mar 21 21:34:59 CST 2023, time=2023-03-21, status=1, ipAttribution=山西省)]
    2023-03-22 jshbyywk2008 来自河北省

    酶的替代品用于人类健康

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=2121002, encodeId=6baf2121002f7, content=针对<a href='/topic/show?id=93f6e937941' target=_blank style='color:#2F92EE;'>#缺血性脑卒中#</a>致死致残率高、缺乏高效低毒治疗药物的难题,发明了一种多肽抗氧化<a href='/topic/show?id=77b1e7466c0' target=_blank style='color:#2F92EE;'>#纳米酶#</a>,其中的多肽能够靶向溶解<a href='/topic/show?id=b7fc89083ad' target=_blank style='color:#2F92EE;'>#血栓#</a>,<a href='/topic/show?id=0c9610568418' target=_blank style='color:#2F92EE;'>#MnO2纳米酶#</a>具有<a href='/topic/show?id=62a910455418' target=_blank style='color:#2F92EE;'>#超氧化物歧化酶#</a>(SOD)和<a href='/topic/show?id=4e739409289' target=_blank style='color:#2F92EE;'>#过氧化氢酶#</a>(CAT)催化活性,这两种酶的级联催化反应能够清除病灶区域的<a href='/topic/show?id=b79c6521eb7' target=_blank style='color:#2F92EE;'>#活性氧#</a>(ROS)。, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79379, encryptionId=93f6e937941, topicName=缺血性脑卒中), TopicDto(id=77466, encryptionId=77b1e7466c0, topicName=纳米酶), TopicDto(id=89083, encryptionId=b7fc89083ad, topicName=血栓), TopicDto(id=105684, encryptionId=0c9610568418, topicName=MnO2纳米酶), TopicDto(id=104554, encryptionId=62a910455418, topicName=超氧化物歧化酶), TopicDto(id=94092, encryptionId=4e739409289, topicName=过氧化氢酶), TopicDto(id=65217, encryptionId=b79c6521eb7, topicName=活性氧)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/Random/55971dc507c93968175ce7cc1e177b372a83869f.jpg, createdBy=f63e4754896, createdName=侠胆医心, createdTime=Wed Mar 22 08:30:59 CST 2023, time=2023-03-22, status=1, ipAttribution=上海), GetPortalCommentsPageByObjectIdResponse(id=2120948, encodeId=5e922120948dd, content=不错,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4dfa6526517, createdName=仁术2023, createdTime=Wed Mar 22 06:26:31 CST 2023, time=2023-03-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2120947, encodeId=a4d7212094e6b, content=酶的替代品用于人类健康, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2d3d3015017, createdName=jshbyywk2008, createdTime=Wed Mar 22 06:23:34 CST 2023, time=2023-03-22, status=1, ipAttribution=河北省), GetPortalCommentsPageByObjectIdResponse(id=2120933, encodeId=fa792120933eb, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Tue Mar 21 23:56:12 CST 2023, time=2023-03-21, status=1, ipAttribution=浙江省), GetPortalCommentsPageByObjectIdResponse(id=2120906, encodeId=a4092120906ef, content=纳米技术与医学的结合是未来医学的发展道路之一, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a6b52200566, createdName=120b31f2m12暂无昵称, createdTime=Tue Mar 21 22:17:22 CST 2023, time=2023-03-21, status=1, ipAttribution=上海), GetPortalCommentsPageByObjectIdResponse(id=2120895, encodeId=7c83212089567, content=认真学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6EF3hKja8nER8RMzxQdria9eCYFhgLTLsDOeqnvIYdeLDz5eP6EnicLuE5gibiawgno4zUA0jAR7Nbtp2llQ9fs3Mk/0, createdBy=278f1986883, createdName=医鸣惊人, createdTime=Tue Mar 21 21:34:59 CST 2023, time=2023-03-21, status=1, ipAttribution=山西省)]
    2023-03-21 1209e435m98(暂无昵称) 来自浙江省

    学习了,谢谢分享

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=2121002, encodeId=6baf2121002f7, content=针对<a href='/topic/show?id=93f6e937941' target=_blank style='color:#2F92EE;'>#缺血性脑卒中#</a>致死致残率高、缺乏高效低毒治疗药物的难题,发明了一种多肽抗氧化<a href='/topic/show?id=77b1e7466c0' target=_blank style='color:#2F92EE;'>#纳米酶#</a>,其中的多肽能够靶向溶解<a href='/topic/show?id=b7fc89083ad' target=_blank style='color:#2F92EE;'>#血栓#</a>,<a href='/topic/show?id=0c9610568418' target=_blank style='color:#2F92EE;'>#MnO2纳米酶#</a>具有<a href='/topic/show?id=62a910455418' target=_blank style='color:#2F92EE;'>#超氧化物歧化酶#</a>(SOD)和<a href='/topic/show?id=4e739409289' target=_blank style='color:#2F92EE;'>#过氧化氢酶#</a>(CAT)催化活性,这两种酶的级联催化反应能够清除病灶区域的<a href='/topic/show?id=b79c6521eb7' target=_blank style='color:#2F92EE;'>#活性氧#</a>(ROS)。, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=79379, encryptionId=93f6e937941, topicName=缺血性脑卒中), TopicDto(id=77466, encryptionId=77b1e7466c0, topicName=纳米酶), TopicDto(id=89083, encryptionId=b7fc89083ad, topicName=血栓), TopicDto(id=105684, encryptionId=0c9610568418, topicName=MnO2纳米酶), TopicDto(id=104554, encryptionId=62a910455418, topicName=超氧化物歧化酶), TopicDto(id=94092, encryptionId=4e739409289, topicName=过氧化氢酶), TopicDto(id=65217, encryptionId=b79c6521eb7, topicName=活性氧)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/Random/55971dc507c93968175ce7cc1e177b372a83869f.jpg, createdBy=f63e4754896, createdName=侠胆医心, createdTime=Wed Mar 22 08:30:59 CST 2023, time=2023-03-22, status=1, ipAttribution=上海), GetPortalCommentsPageByObjectIdResponse(id=2120948, encodeId=5e922120948dd, content=不错,学习了。, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=4dfa6526517, createdName=仁术2023, createdTime=Wed Mar 22 06:26:31 CST 2023, time=2023-03-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2120947, encodeId=a4d7212094e6b, content=酶的替代品用于人类健康, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2d3d3015017, createdName=jshbyywk2008, createdTime=Wed Mar 22 06:23:34 CST 2023, time=2023-03-22, status=1, ipAttribution=河北省), GetPortalCommentsPageByObjectIdResponse(id=2120933, encodeId=fa792120933eb, content=学习了,谢谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c592194322, createdName=1209e435m98(暂无昵称), createdTime=Tue Mar 21 23:56:12 CST 2023, time=2023-03-21, status=1, ipAttribution=浙江省), GetPortalCommentsPageByObjectIdResponse(id=2120906, encodeId=a4092120906ef, content=纳米技术与医学的结合是未来医学的发展道路之一, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a6b52200566, createdName=120b31f2m12暂无昵称, createdTime=Tue Mar 21 22:17:22 CST 2023, time=2023-03-21, status=1, ipAttribution=上海), GetPortalCommentsPageByObjectIdResponse(id=2120895, encodeId=7c83212089567, content=认真学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo6EF3hKja8nER8RMzxQdria9eCYFhgLTLsDOeqnvIYdeLDz5eP6EnicLuE5gibiawgno4zUA0jAR7Nbtp2llQ9fs3Mk/0, createdBy=278f1986883, createdName=医鸣惊人, createdTime=Tue Mar 21 21:34:59 CST 2023, time=2023-03-21, status=1, ipAttribution=山西省)]
    2023-03-21 120b31f2m12暂无昵称 来自上海

    纳米技术与医学的结合是未来医学的发展道路之一

    0

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    2023-03-21 医鸣惊人 来自山西省

    认真学习了

    0

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