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J Micro Infect:复旦大学上海医学院与浙江中医药大学合作 “猪八戒”可以给“唐僧”输血了

2019-07-22 孙国根 科学网

复旦大学上海医学院陈力教授课题组和浙江中医药大学的孙桂芹副教授课题组合作,利用糖苷酶技术对猪红细胞进行改造,可以快速有效解除人体对猪红细胞的急性排斥反应,为猪红细胞的临床应用打下了基础。该研究成果日前已在线发表于国际《微生物与感染》杂志,相关酶制剂及应用方法已申请专利。

复旦大学上海医学院陈力教授课题组和浙江中医药大学的孙桂芹副教授课题组合作,利用糖苷酶技术对猪红细胞进行改造,可以快速有效解除人体对猪红细胞的急性排斥反应,为猪红细胞的临床应用打下了基础。该研究成果日前已在线发表于国际《微生物与感染》杂志,相关酶制剂及应用方法已申请专利。

据专家介绍,人的血型是由存在于血细胞上的血型特异性寡糖结构所决定的。A血型人群的红细胞表面存在A特异性寡糖,没有B特异性寡糖,血液中存在抗B型血特异性寡糖的抗体,一旦输入B型血,体内会立刻发生由抗B型血抗体介导的急性溶血反应,所以A型血病人不能接受B型血输血。与人的ABO血型相似,异种间的红细胞上也存在不同结构的寡糖。猪血与人血的主要不同,是猪红细胞表面的寡糖,多了一个末端半乳糖,成为人体免疫系统的攻击靶点。人的血液中有极高的抗体,一旦猪红细胞进入人体,会立刻引发急性溶血反应。这一反应,限制了猪红细胞的人用。

陈力团队在长期细菌研究中发现,脑膜炎败血伊丽莎白金菌中有一个具有特殊功能的半乳糖苷酶,经基因克隆,蛋白表达纯化和功能分析后确认,该酶在生理条件下,能够高效酶切猪血细胞末端半乳糖,其“非凡”之处在于,它可以在生理条件下,特异性水解猪红细胞表面存在的异种寡糖结构,将猪红细胞寡糖末端的半乳糖除去,成功制备成人化猪红细胞。

陈力说,以前一直说“猪八戒”不可以给“唐僧”输血,因为猪血进入人体后,会被人体的免疫系统攻击,产生急性溶血反应而导致严重后果。但猪血经特异的糖苷酶处理后,可有效解除急性溶血反应,因为猪红细胞上能被人体免疫系统攻击的主要目标被水解了,不存在了。他表示,这项研究成果对保证在战争及灾难等紧急条件下的大量供血有重要意义。

原始出处;

WANG Lei1,ZOU Lin1,LI Mengjie, et.al. Morphological transformation of rod-shaped bacterial cells: mechanisms and biological impacts. JOURNAL OF MICROBES AND INFECTIONS  2019, Vol. 14  Issue (2): 99-105    DOI: 10.3969/j.issn.1673-6184.2019.01.005

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    2020-02-26 仁者大医
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    2020-01-14 xjy02
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    2019-07-24 windight
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    2019-07-24 cathymary
  6. [GetPortalCommentsPageByObjectIdResponse(id=1857816, encodeId=54b5185e816d5, content=<a href='/topic/show?id=3f48525849' target=_blank style='color:#2F92EE;'>#CRO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5258, encryptionId=3f48525849, topicName=CRO)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8e886, createdName=仁者大医, createdTime=Wed Feb 26 03:58:00 CST 2020, time=2020-02-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1859851, encodeId=3260185985122, content=<a href='/topic/show?id=f0a6342e2b0' target=_blank style='color:#2F92EE;'>#医学院#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=34272, encryptionId=f0a6342e2b0, topicName=医学院)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a57b78, createdName=朱睿睿, createdTime=Mon Nov 04 05:58:00 CST 2019, time=2019-11-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2084539, encodeId=8a0d2084539d9, content=<a href='/topic/show?id=61f411e013b' target=_blank style='color:#2F92EE;'>#Micro#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11701, encryptionId=61f411e013b, topicName=Micro)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d59291, createdName=xjy02, createdTime=Tue Jan 14 11:58:00 CST 2020, time=2020-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1259714, encodeId=03461259e14de, content=<a href='/topic/show?id=569c9382389' target=_blank style='color:#2F92EE;'>#输血#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93823, encryptionId=569c9382389, topicName=输血)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ec9955, createdName=windight, createdTime=Wed Jul 24 03:58:00 CST 2019, time=2019-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1409866, encodeId=1f971409866c2, content=<a href='/topic/show?id=2c1c35262a9' target=_blank style='color:#2F92EE;'>#医药#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=35262, encryptionId=2c1c35262a9, topicName=医药)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=36f62754598, createdName=cathymary, createdTime=Wed Jul 24 03:58:00 CST 2019, time=2019-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1538567, encodeId=60b0153856ee0, content=<a href='/topic/show?id=751e42660f1' target=_blank style='color:#2F92EE;'>#复旦#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=42660, encryptionId=751e42660f1, topicName=复旦)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e6c312994908, createdName=saikp, createdTime=Wed Jul 24 03:58:00 CST 2019, time=2019-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1555302, encodeId=fb0d15553021a, content=<a href='/topic/show?id=f367681e434' target=_blank style='color:#2F92EE;'>#猪#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=68174, encryptionId=f367681e434, topicName=猪)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=9ec214601917, createdName=muzishouyi, createdTime=Wed Jul 24 03:58:00 CST 2019, time=2019-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1049652, encodeId=3e721049652ef, content=中医中药,大多被人诋毁,不过梅斯里总是客观公正的, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=运动yd, createdTime=Mon Jul 22 15:58:00 CST 2019, time=2019-07-22, status=1, ipAttribution=)]
    2019-07-24 saikp
  7. [GetPortalCommentsPageByObjectIdResponse(id=1857816, encodeId=54b5185e816d5, content=<a href='/topic/show?id=3f48525849' target=_blank style='color:#2F92EE;'>#CRO#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=5258, encryptionId=3f48525849, topicName=CRO)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8e886, createdName=仁者大医, createdTime=Wed Feb 26 03:58:00 CST 2020, time=2020-02-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1859851, encodeId=3260185985122, content=<a href='/topic/show?id=f0a6342e2b0' target=_blank style='color:#2F92EE;'>#医学院#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=34272, encryptionId=f0a6342e2b0, topicName=医学院)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a57b78, createdName=朱睿睿, createdTime=Mon Nov 04 05:58:00 CST 2019, time=2019-11-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2084539, encodeId=8a0d2084539d9, content=<a href='/topic/show?id=61f411e013b' target=_blank style='color:#2F92EE;'>#Micro#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11701, encryptionId=61f411e013b, topicName=Micro)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d59291, createdName=xjy02, createdTime=Tue Jan 14 11:58:00 CST 2020, time=2020-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1259714, encodeId=03461259e14de, content=<a href='/topic/show?id=569c9382389' target=_blank style='color:#2F92EE;'>#输血#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93823, encryptionId=569c9382389, topicName=输血)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ec9955, createdName=windight, createdTime=Wed Jul 24 03:58:00 CST 2019, time=2019-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1409866, encodeId=1f971409866c2, content=<a href='/topic/show?id=2c1c35262a9' target=_blank style='color:#2F92EE;'>#医药#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=35262, encryptionId=2c1c35262a9, topicName=医药)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=36f62754598, createdName=cathymary, createdTime=Wed Jul 24 03:58:00 CST 2019, time=2019-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1538567, encodeId=60b0153856ee0, content=<a href='/topic/show?id=751e42660f1' target=_blank style='color:#2F92EE;'>#复旦#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=42660, encryptionId=751e42660f1, topicName=复旦)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=e6c312994908, createdName=saikp, createdTime=Wed Jul 24 03:58:00 CST 2019, time=2019-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1555302, encodeId=fb0d15553021a, content=<a href='/topic/show?id=f367681e434' target=_blank style='color:#2F92EE;'>#猪#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=68174, encryptionId=f367681e434, topicName=猪)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=9ec214601917, createdName=muzishouyi, createdTime=Wed Jul 24 03:58:00 CST 2019, time=2019-07-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1049652, encodeId=3e721049652ef, content=中医中药,大多被人诋毁,不过梅斯里总是客观公正的, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=运动yd, createdTime=Mon Jul 22 15:58:00 CST 2019, time=2019-07-22, status=1, ipAttribution=)]
    2019-07-24 muzishouyi
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    2019-07-22 运动yd

    中医中药,大多被人诋毁,不过梅斯里总是客观公正的

    0

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Science:CRISPR–Cas9技术或可促进猪的器官向人类机体中的成功移植

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