Respir Res:吸烟者和COPD患者血液中产生IL-10的调节性B细胞减少

2022-10-29 小文子 MedSci原创

吸烟暴露后、COPD患者和吸烟者产生 IL-10 的调节性 B 细胞数量和功能下降。

根据细胞因子谱定义了两种调节相反的B细胞亚群:产生 IL-6 的效应 B 细胞(B-effs)与产生 IL-10 的调节性 B 细胞(B-regs),分别正性或负性免疫应答。在许多自身免疫性疾病和炎症性疾病中,B-regs减少和/或受损。越来越多的证据表明B 细胞和富含 B 细胞的淋巴滤泡与 COPD 的发病机制有关,Respiratory Research杂志近日发表了一项研究,探讨调节性 B 细胞在 COPD 中的存在和功能。

在根特大学医院招募30例受试者,其血液用于定量IL-10 + B-regs和IL-6 + B-effs。根据病史和吸烟史、问卷调查和肺量计检测,将受试者分为健康对照组、无气流受限的吸烟者或 COPD 患者。

用免疫组化法检测人肺组织中是否存在产生 IL-10 的调节性B 细胞。其次,用流式细胞仪对健康对照组、无气流受限的吸烟者和 COPD 患者(GOLDⅠ~Ⅳ期)外周血单核细胞(PBMC)中IL-10 + B-regs和IL-6 + B-effs进行定量。第三,将体外培养的 COPD 患者血源性 B 细胞暴露于香烟烟雾提取物(CSE)中,并定量IL-10 + B-regs和IL-6 + B-effs。此外,通过阻断 BAFF 来恢复紊乱的 IL10 产生。第四,测定暴露于培养基或 CSE的FACS分类记忆B 细胞和幼稚 B 细胞中参与 IL-10生成的转录因子mRNA 表达。

免疫组化证实肺实质和淋巴滤泡中存在产生 IL-10 的调节性 B 细胞。与从不吸烟者相比,无气流受限的吸烟者和 COPD 患者血源性记忆 B 细胞亚群中IL-10 + B-regs的百分比显著降低。

此外,体外暴露于 CSE 后,B细胞产生 IL-10 的能力降低,这不能通过 BAFF 阻断来恢复。最后,CSE暴露后,记忆 B 细胞中转录因子 IRF4 和HIF-1α的 mRNA 水平降低。

结果表明,吸烟暴露后、COPD患者和吸烟者产生 IL-10 的调节性 B 细胞数量和功能下降。由于吸烟是 COPD 的主要风险因素,吸烟者和 COPD 患者的调节性 B 细胞功能受损可能导致疾病的发生和进展。

原文出处:

Merel Jacobs, Sven Verschraegen, IL-10 producing regulatory B cells are decreased in blood from smokers and COPD patients, Respiratory Research, 2022, https://doi.org/10.1186/s12931-022-02208-1.

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    2022-10-29 delianjihui

    转发学习

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=2097251, encodeId=6929209e251f5, content=转发学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a5281475204, createdName=delianjihui, createdTime=Sat Oct 29 13:10:47 CST 2022, time=2022-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2097250, encodeId=bc4f209e250f9, content=感谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a5281475204, createdName=delianjihui, createdTime=Sat Oct 29 13:10:42 CST 2022, time=2022-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2097249, encodeId=4ccc209e2492f, content=学习受益, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a5281475204, createdName=delianjihui, createdTime=Sat Oct 29 13:10:34 CST 2022, time=2022-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2097242, encodeId=9134209e2427a, content=好文章,谢谢分享。, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, 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=Sat Oct 29 12:33:57 CST 2022, time=2022-10-29, status=1, ipAttribution=)]
    2022-10-29 delianjihui

    感谢分享

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=2097251, encodeId=6929209e251f5, content=转发学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a5281475204, createdName=delianjihui, createdTime=Sat Oct 29 13:10:47 CST 2022, time=2022-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2097250, encodeId=bc4f209e250f9, content=感谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a5281475204, createdName=delianjihui, createdTime=Sat Oct 29 13:10:42 CST 2022, time=2022-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2097249, encodeId=4ccc209e2492f, content=学习受益, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a5281475204, createdName=delianjihui, createdTime=Sat Oct 29 13:10:34 CST 2022, time=2022-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2097242, encodeId=9134209e2427a, content=好文章,谢谢分享。, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, 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=Sat Oct 29 12:33:57 CST 2022, time=2022-10-29, status=1, ipAttribution=)]
    2022-10-29 delianjihui

    学习受益

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=2097251, encodeId=6929209e251f5, content=转发学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a5281475204, createdName=delianjihui, createdTime=Sat Oct 29 13:10:47 CST 2022, time=2022-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2097250, encodeId=bc4f209e250f9, content=感谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a5281475204, createdName=delianjihui, createdTime=Sat Oct 29 13:10:42 CST 2022, time=2022-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2097249, encodeId=4ccc209e2492f, content=学习受益, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a5281475204, createdName=delianjihui, createdTime=Sat Oct 29 13:10:34 CST 2022, time=2022-10-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2097242, encodeId=9134209e2427a, content=好文章,谢谢分享。, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, 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=Sat Oct 29 12:33:57 CST 2022, time=2022-10-29, status=1, ipAttribution=)]
    2022-10-29 yangchou

    好文章,谢谢分享。

    0

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