Transfusion:红细胞表面糖蛋白 A 的自身抗体影响循环白细胞的激活状态

2021-11-25 MedSci原创 MedSci原创

外周血中的中性粒细胞和单核细胞暴露于针对 RBC 表面 GPA 的抗体,例如 M 或 N 抗原,可能会引发活化表型。

M 和 N 等位基因都编码糖蛋白 A (GPA) 上的抗原,GPA 是一种红细胞 (RBC) 表面唾液酸糖蛋白。RBC GPA 和白细胞表面凝集素之间的相互作用可能会下调它们的激活。目前的研究调查了 RBC 针对 GPA 的自身抗体,例如自身抗 M/N,是否会引发外周血白细胞中的活化表型。



在来自自身抗 GPA(抗 M/N)患者的全血中评估白细胞活化,并与具有异体抗 M/N 的患者和健康受试者进行比较。对来自没有与抗 GPA 或抗 Rh 体外孵育的抗体的健康受试者的对照样品进行分析,以确定中性粒细胞和单核细胞表面活化标记的表达、活性氧 (ROS) 含量以及与 RBC 的聚集体的形成。用 IgG1 同种型抗体孵育的样品作为对照。

表1:自体抗M或同种异体抗M/N抗体患者的特征

表2:全血细胞计数(平均±标准差)

图1:白细胞表面活化标记物的体内和外表达

图2:体外检测白细胞和细胞内ROS的含量

 

图3:中性粒细胞-红细胞在体外聚集

与异体抗 M/N 患者(p = .1757;p = .0698)和健康受试者(p = .0186;p = .013)。在体外,与抗-Rh(p = .0003;p = .0328)和同种型对照(p = .000;p = .0062)相比,与抗 GPA 孵育后中性粒细胞 CD66b 和单核细胞 CD63 表面表达增加。与抗-Rh(p = .0012;p = .0693)和同种型对照(p = .001;p = .0021)相比,用抗 GPA 孵育的嗜中性粒细胞和单核细胞的细胞内 ROS 含量均增加。与同种型对照相比,用抗 GPA 孵育时中性粒细胞-RBC 聚集体的百分比降低(p < .01)。

 

综上所述,外周血中的中性粒细胞和单核细胞暴露于针对 RBC 表面 GPA 的抗体,例如 M 或 N 抗原,可能会引发活化表型。

 

原始出处:

Klein, MNLarkin, EJMarshall, JNFan, XParry, PTirouvanziam, R, et al. Autoantibodies to red blood cell surface Glycophorin A impact the activation poise of circulating leukocytesTransfusion20211– 10https://doi.org/10.1111/trf.16746

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    2022-05-24 tcm110hq
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    2022-09-06 bsmagic9140
  4. [GetPortalCommentsPageByObjectIdResponse(id=1720720, encodeId=6cf41e20720fb, content=<a href='/topic/show?id=8163e726a0' target=_blank style='color:#2F92EE;'>#Fusion#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=7726, encryptionId=8163e726a0, topicName=Fusion)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f10932951504, createdName=tcm110hq, createdTime=Tue May 24 04:37:06 CST 2022, time=2022-05-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1795831, encodeId=9a581e9583182, content=<a href='/topic/show?id=b3f81e747da' target=_blank style='color:#2F92EE;'>#Transfusion#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17747, encryptionId=b3f81e747da, topicName=Transfusion)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/WQ1WyMBGic8d2fKdCe6Cm3vaRh4X8YnlumYndC46iagNCBl9Df8RtoCaQchnFtZldHUctGJjsgsyutUlu8vPq6yQ/132, createdBy=97862500016, createdName=ms3117646317107274, createdTime=Mon Jul 25 07:37:06 CST 2022, time=2022-07-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1657581, encodeId=04a5165e581ae, content=<a href='/topic/show?id=3ca31e71903' target=_blank style='color:#2F92EE;'>#TRA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17719, encryptionId=3ca31e71903, topicName=TRA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=757b24868428, createdName=bsmagic9140, createdTime=Tue Sep 06 23:37:06 CST 2022, time=2022-09-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1073825, encodeId=286d10e3825d3, content=好文共享之。, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJlfgys76DEiaNtbYo2re3ibjrUPTRibEXRyFwAB4aAGiave842S0FQDf0wAoaH226NiaSoPPDzhndsf1g/132, createdBy=88b489038, createdName=yangchou, createdTime=Thu Nov 25 12:56:16 CST 2021, time=2021-11-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1282095, encodeId=19741282095a1, content=<a href='/topic/show?id=3dece71531e' target=_blank style='color:#2F92EE;'>#红细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77153, encryptionId=3dece71531e, topicName=红细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c22f171, createdName=kord1982, createdTime=Thu Nov 25 07:37:06 CST 2021, time=2021-11-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1627263, encodeId=3188162e263ef, content=<a href='/topic/show?id=8ea0e6863a2' target=_blank style='color:#2F92EE;'>#糖蛋白#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=76863, encryptionId=8ea0e6863a2, topicName=糖蛋白)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=1d6621112920, createdName=chentianping, createdTime=Thu Nov 25 07:37:06 CST 2021, time=2021-11-25, status=1, ipAttribution=)]
    2021-11-25 yangchou

    好文共享之。

    0

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