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Blood:BIVV001,一种新型FVIII替代品,用于A型血友病的止血控制效果!

2020-02-21 不详 MedSci原创

中心点:BIVV001是一种新型的融合蛋白,在A型血友病临床前模型中的止血控制效果与rFVIII高4倍。BIVV001有潜力为重度A型血友病患者提供针对所有出血类型的更优、更广泛的保护。摘要:FVIII的替代产品为A型血友病患者提供全面的防护。重度A型血友病的治疗目标正在扩大,不再局限于降低年化出血率,还包括与持续高FVIII水平相关的长期预后。虽然内源性VWF可稳定保护FVIII免于降解和清除,

中心点:

BIVV001是一种新型的融合蛋白,在A型血友病临床前模型中的止血控制效果与rFVIII高4倍。

BIVV001有潜力为重度A型血友病患者提供针对所有出血类型的更优、更广泛的保护。

摘要:

FVIII的替代产品为A型血友病患者提供全面的防护。重度A型血友病的治疗目标正在扩大,不再局限于降低年化出血率,还包括与持续高FVIII水平相关的长期预后。

虽然内源性VWF可稳定保护FVIII免于降解和清除,但它也只能使FVIII的半衰期最长维持在15-19小时。进一步提高重组FVIII (rFVIII)的半衰期取决于内源性VWF与rFVIII解耦联。

Schratz等人开发了一种新的FVIII替代品,rFVIIIFc-VWF-XTEN (BIVV001),在生理条件下,它可与内源性VWF解耦,并与既往所有FVIII产品相比,药代动力学特性增强。BIVV001是一个独特的融合蛋白,由VWF-D?D3结构域融合通过免疫球蛋白rFVIII G1 Fc结构域和两个XTEN?多肽与rFVIII融合组成。

BIVV001给药后,小鼠和猴子的血浆FVIII半衰期分别为25-31小时和33-34小时,提示FVIII半衰期延长了3-4倍。

本研究结果表明,考虑多方面的蛋白质工程的效果远远超过一些简单氨基酸的替代,可以显著改善rFVIII的药代动力学性质,同时保持止血功能。BIVV001是首个rFVIII,以更小的剂量通过对所有出血类型提供最佳的保护,有可能将大大改变重度A型血友病的治疗模式。而且,这种蛋白质工程方法也可应用于其它复杂蛋白质。

原始出处:


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    2020-08-02 juliusluan78
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    2020-11-05 wjcjjian
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    2020-02-23 jeanqiuqiu
  6. [GetPortalCommentsPageByObjectIdResponse(id=1678152, encodeId=73a516e81526b, content=<a href='/topic/show?id=7df63110d5' target=_blank style='color:#2F92EE;'>#A型血#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=74, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3110, encryptionId=7df63110d5, topicName=A型血)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8e886, createdName=仁者大医, createdTime=Tue May 05 14:09:00 CST 2020, time=2020-05-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1916238, encodeId=ff3f191623806, content=<a href='/topic/show?id=c5a89550ff' target=_blank style='color:#2F92EE;'>#III#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=104, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=9550, encryptionId=c5a89550ff, topicName=III)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=e68e415, createdName=juliusluan78, createdTime=Sun Aug 02 20:09:00 CST 2020, time=2020-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1715783, encodeId=41a11e157839e, content=<a href='/topic/show?id=b9bbe73853' target=_blank style='color:#2F92EE;'>#FVIII#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=99, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7738, encryptionId=b9bbe73853, topicName=FVIII)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=487e32047562, createdName=wjcjjian, createdTime=Thu Nov 05 01:09:00 CST 2020, time=2020-11-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1685682, encodeId=a9ed168568294, content=<a href='/topic/show?id=1bde34980c' target=_blank style='color:#2F92EE;'>#BIVV001#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=90, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3498, encryptionId=1bde34980c, topicName=BIVV001)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=0f6728244019, createdName=ms2999106592497887, createdTime=Sat Sep 19 02:09:00 CST 2020, time=2020-09-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1263085, encodeId=1b9212630857d, content=<a href='/topic/show?id=ebb5631e076' target=_blank style='color:#2F92EE;'>#止血#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=90, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=63170, encryptionId=ebb5631e076, topicName=止血)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6f7770, createdName=jeanqiuqiu, createdTime=Sun Feb 23 03:09:00 CST 2020, time=2020-02-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1264140, encodeId=8d3c1264140d8, content=<a href='/topic/show?id=ffb03111a1' target=_blank style='color:#2F92EE;'>#A型血友病#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=112, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3111, encryptionId=ffb03111a1, topicName=A型血友病)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=32d177, createdName=changfy, createdTime=Sun Feb 23 03:09:00 CST 2020, time=2020-02-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1046996, encodeId=8194104699677, content=疗效只是效果的众多方面之一,还要看对患者的获益,包括生活质量等因素共同决定效果的, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=CHANGE, createdTime=Fri Feb 21 15:09:00 CST 2020, time=2020-02-21, status=1, ipAttribution=)]
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    2020-02-21 CHANGE

    疗效只是效果的众多方面之一,还要看对患者的获益,包括生活质量等因素共同决定效果的

    0

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