Sci Rep:于广利课题组发现褐藻硫酸多糖KW抑制甲型流感病毒感染

2017-04-29 佚名 中国海洋大学医药学院

甲型流感病毒(Influenza A Virus,IAV)属于正粘病毒科,是具有包膜的单股负链RNA病毒;根据其表面的血凝素蛋白(HA)和神经氨酸酶(NA)的结构及基因特性的不同可分为若干亚型,如H1N1, H3N2, H5N1及H7N9等。甲型流感病毒的爆发流行不仅给人类生命健康带来巨大威胁,还会带来巨大的经济损失。特别是H5N1和H7N9等高致病性禽流感病毒已跨越种属屏障引起人类感染并致感染者

甲型流感病毒(Influenza A Virus,IAV)属于正粘病毒科,是具有包膜的单股负链RNA病毒;根据其表面的血凝素蛋白(HA)和神经氨酸酶(NA)的结构及基因特性的不同可分为若干亚型,如H1N1, H3N2, H5N1及H7N9等。甲型流感病毒的爆发流行不仅给人类生命健康带来巨大威胁,还会带来巨大的经济损失。特别是H5N1和H7N9等高致病性禽流感病毒已跨越种属屏障引起人类感染并致感染者死亡。迄今为止,上市的抗IAV药物有四种,分别是以离子通道M2为靶点的金刚烷胺(Amantadine)和金刚乙胺(Rimantadine)以及以NA为靶点的奥司他韦(Oseltamivir)和扎那米韦(Zanamivir)。这些药物具有副作用大,易产生耐药性等缺点。因此,研发低毒高效的新型抗IAV药物十分迫切。

中国海洋大学糖工程实验室于广利教授课题组与药理室王伟副教授合作对褐藻来源的系列糖类化合物进行了抗流感病毒活性筛选,从中发现了一种褐藻来源的硫酸多糖KW具有显着的体外抗甲型流感病毒作用且毒性很小。KW的抗流感病毒作用具有广谱性,且不易产生耐药性,效果优于金刚烷胺和奥司他韦。研究发现KW能够专一性地结合病毒NA蛋白进而特异性抑制其水解细胞表面唾液酸,阻止病毒的逃逸。KW 还能抑制宿主细胞对病毒颗粒的内吞,并干扰EGFR及其下游信号通路的激活。因此,KW主要是通过靶向病毒神经氨酸酶和宿主EGFR通路来抑制病毒的入侵和释放过程。低剂量的KW滴鼻给药还能显着抑制病毒感染小鼠存活率,效果与奥司他韦相当,为其开发成一种新型滴鼻剂或鼻喷雾剂用于流感病毒的预防和治疗提供了理论依据。该化合物专利权于2016年9月以334万元转让给威海人生药业有限公司。

该研究得到了国家自然科学基金、国家海洋实验室鳌山计划、山东省重点研发计划及泰山学者计划等项目的资助。

原始出处:

Wei Wang, Jiandong Wu, Xiaoshuang Zhang, et al. Inhibition of Influenza A Virus Infection by Fucoidan Targeting Viral Neuraminidase and Cellular EGFR Pathway. Sci. Rep. 2017, 7, 40760; doi: 10.1038/srep40760

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    2017-05-08 jyzxjiangqin

    抑制甲型流感病毒的感染。

    0

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    2017-05-01 虈亣靌

    学习一下觉得非常好

    0

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  5. [GetPortalCommentsPageByObjectIdResponse(id=1975889, encodeId=da3319e5889fc, content=<a href='/topic/show?id=06aa69e72da' target=_blank style='color:#2F92EE;'>#甲型流感病毒#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=69772, encryptionId=06aa69e72da, topicName=甲型流感病毒)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a9de34, createdName=shenxlcyp, createdTime=Thu Jan 25 06:47:00 CST 2018, time=2018-01-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=195266, encodeId=3b54195266b8, content=抑制甲型流感病毒的感染。, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160806/IMG57A5698BDB0244113.jpg, createdBy=32a91358059, createdName=jyzxjiangqin, createdTime=Mon May 08 07:17:39 CST 2017, time=2017-05-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=192611, encodeId=3a2319261150, content=学习一下觉得非常好, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Mon May 01 21:17:51 CST 2017, time=2017-05-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1531211, encodeId=83c71531211a9, content=<a href='/topic/show?id=244169e70f0' target=_blank style='color:#2F92EE;'>#甲型流感#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=69770, encryptionId=244169e70f0, topicName=甲型流感)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=86ba12221972, createdName=redcrab, createdTime=Mon May 01 10:47:00 CST 2017, time=2017-05-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=192036, encodeId=d3c4192036a8, content=好东西要尽快上市才能真正起作用, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/vi_32/DYAIOgq83er7lBrMCuvxicCR3XJQhu2X3SmEzicSFDknz19Vav0ln3PHYSicIKQRIiazzcibtEchpeQNrjh2jfOYC0w/132, createdBy=eb931929187, createdName=美丽明天在等我, createdTime=Sun Apr 30 07:14:28 CST 2017, time=2017-04-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=191959, encodeId=fcab19195989, content=学习了很有用, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib3IzoRn621JdKCFUI4XvNELcibocrAVU6aUzEVDSaf3rYH08PUYUiagGqxAEhj8g9WqqNvD1CupIpCrmnR2OrqHZh/0, createdBy=7f181365728, createdName=飛歌, createdTime=Sun Apr 30 00:07:27 CST 2017, time=2017-04-30, status=1, ipAttribution=)]
    2017-04-30 美丽明天在等我

    好东西要尽快上市才能真正起作用

    0

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    2017-04-30 飛歌

    学习了很有用

    0