Blood:血管内大B细胞淋巴瘤的遗传特征

2021-03-20 Nebula MedSci原创

血管内大B细胞淋巴瘤(IVLBCL)是一种独特类型的结外淋巴瘤,特征是肿瘤细胞在小血管中选择性生长,无淋巴结肿大

中心点:

IVLBCL常见免疫检查点相关基因遗传变异;

血浆cfDNA可用于IVLBCL检测基因变异。


血管内大B细胞淋巴瘤(IVLBCL)是一种独特类型的结外淋巴瘤,特征是肿瘤细胞在小血管中选择性生长,无淋巴结肿大。活检标本中淋巴瘤细胞的缺乏阻碍了对IVLBCL分子发病机理的更深入的挖掘,也在获得充足的肿瘤材料方面造成了限制。

为了揭示IVLBCL的基因图谱,研究人员对21例IVLBCL患者的血浆来源的游离DNA(cfDNA)(n=18)、患者来源的移植瘤(n=4)和骨髓(BM)单核细胞的肿瘤DNA(n=2)进行了全外显子测序(WES)。

IVLBCL的cfDNA浓度

IVLBCL患者的cfDNA的浓度显著高于弥漫性大B细胞淋巴瘤(DLBCL)患者(P<0.0001)和健康供体的(P=0.0053);在cfDNA和移植瘤中都成功捕获了BM肿瘤DNA中检测到的大多数突变

不同样本检测的突变对比

IVLBCL表现出活化B细胞型DLBCL特征性的高频遗传变异;与结节性DLBCL相比,IVLBCL患者的MYD88(57%)、CD79B(67%)、SETD1B(57%)和HLA-B(57%)基因的突变频率显著更高

IVLBCL的突变谱

此外,研究人员还发现,8位IVLBCL患者(38%)携带涉及3'非编码区的程序性细胞死亡1配体1和2(PD-L1/PD-L2)的重组;这种重排与PD-L1/PD-L2过表达引起的免疫逃逸有关。

综上,该研究数据证明了cfDNA在肿瘤基因突变检测中的实用性,揭示了免疫逃逸在IVLBCL病理机制中的重要作用,提示PD-1/PD-L1/PD-L2阻断在IVLBCL治疗中的潜在价值。

原始出处:

Kazuyuki Shimada, et al. Frequent genetic alterations in immune checkpoint–related genes in intravascular large B-cell lymphoma. Blood. March 18, 2021

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    2021-04-30 MedSciZeng

    #Blood#点击进入话题查看更多相关文章 或评论时插入话题加入讨论

    0

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    2021-04-03 446993560

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    2021-03-23 13d789bam70暂无昵称

    学习了,涨知识了

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  6. [GetPortalCommentsPageByObjectIdResponse(id=1663667, encodeId=9f5f166366e80, content=<a href='/topic/show?id=355c9518883' target=_blank style='color:#2F92EE;'>#遗传特征#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=95188, encryptionId=355c9518883, topicName=遗传特征)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6b6b25658831, createdName=ms3830150583600765, createdTime=Mon Aug 30 13:19:26 CST 2021, time=2021-08-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=961931, encodeId=af0f9619314b, content=<a href='/topic/show?id=96fb352ebf' target=_blank style='color:#2F92EE;'>#Blood#</a>点击进入话题查看更多相关文章 或评论时插入话题加入讨论, beContent=null, objectType=article, channel=null, level=null, likeNumber=82, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3527, encryptionId=96fb352ebf, topicName=Blood)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20221103/2796e00c9b4549e3b313ed9e7accc68f/b52d6d98bbe04782b5a4e2dd1ee80be2.jpeg, createdBy=078e1614372, createdName=MedSciZeng, createdTime=Fri Apr 30 17:32:21 CST 2021, time=2021-04-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1702673, encodeId=8e0c1e0267323, content=<a href='/topic/show?id=ddc9e795159' target=_blank style='color:#2F92EE;'>#细胞淋巴瘤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77951, encryptionId=ddc9e795159, topicName=细胞淋巴瘤)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=201630414353, createdName=marlenexl, createdTime=Fri Feb 25 12:19:26 CST 2022, time=2022-02-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=953667, encodeId=861a95366ed9, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c151583732, createdName=446993560, createdTime=Sat Apr 03 22:02:11 CST 2021, time=2021-04-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=950380, encodeId=750095038003, content=学习了,涨知识了, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=430b4201824, createdName=13d789bam70暂无昵称, createdTime=Tue Mar 23 15:48:29 CST 2021, time=2021-03-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1273391, encodeId=a6d112e33910c, content=<a href='/topic/show?id=310d383ef5' target=_blank style='color:#2F92EE;'>#B细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3837, encryptionId=310d383ef5, topicName=B细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6eba113, createdName=xiaoyeshuang, createdTime=Mon Mar 22 11:19:26 CST 2021, time=2021-03-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=949878, encodeId=84f59498e884, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210309/3ebed07d7c624aadaefeed82ed1b9c54/df9b06b299a24411bd48847eb8c73660.jpg, createdBy=6b342463583, createdName=124219b2m20暂无昵称, createdTime=Sun Mar 21 12:22:52 CST 2021, time=2021-03-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=949772, encodeId=18c3949e72eb, content=学习了,涨知识了!, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDM9swhbgTo7nzqRKzMmzckmEoeTyLQVDCgjqsicjyhxPs0vPoYU6GsSYbCjSkNHicJkz3NL0a0EbUMVdNjkctXI6FocpGKaVr9E/0, createdBy=29392048316, createdName=ms2000001051330459, createdTime=Sat Mar 20 20:25:26 CST 2021, time=2021-03-20, status=1, ipAttribution=)]
  7. [GetPortalCommentsPageByObjectIdResponse(id=1663667, encodeId=9f5f166366e80, content=<a href='/topic/show?id=355c9518883' target=_blank style='color:#2F92EE;'>#遗传特征#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=95188, encryptionId=355c9518883, topicName=遗传特征)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6b6b25658831, createdName=ms3830150583600765, createdTime=Mon Aug 30 13:19:26 CST 2021, time=2021-08-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=961931, encodeId=af0f9619314b, content=<a href='/topic/show?id=96fb352ebf' target=_blank style='color:#2F92EE;'>#Blood#</a>点击进入话题查看更多相关文章 或评论时插入话题加入讨论, beContent=null, objectType=article, channel=null, level=null, likeNumber=82, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3527, encryptionId=96fb352ebf, topicName=Blood)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20221103/2796e00c9b4549e3b313ed9e7accc68f/b52d6d98bbe04782b5a4e2dd1ee80be2.jpeg, createdBy=078e1614372, createdName=MedSciZeng, createdTime=Fri Apr 30 17:32:21 CST 2021, time=2021-04-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1702673, encodeId=8e0c1e0267323, content=<a href='/topic/show?id=ddc9e795159' target=_blank style='color:#2F92EE;'>#细胞淋巴瘤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77951, encryptionId=ddc9e795159, topicName=细胞淋巴瘤)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=201630414353, createdName=marlenexl, createdTime=Fri Feb 25 12:19:26 CST 2022, time=2022-02-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=953667, encodeId=861a95366ed9, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c151583732, createdName=446993560, createdTime=Sat Apr 03 22:02:11 CST 2021, time=2021-04-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=950380, encodeId=750095038003, content=学习了,涨知识了, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=430b4201824, createdName=13d789bam70暂无昵称, createdTime=Tue Mar 23 15:48:29 CST 2021, time=2021-03-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1273391, encodeId=a6d112e33910c, content=<a href='/topic/show?id=310d383ef5' target=_blank style='color:#2F92EE;'>#B细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3837, encryptionId=310d383ef5, topicName=B细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6eba113, createdName=xiaoyeshuang, createdTime=Mon Mar 22 11:19:26 CST 2021, time=2021-03-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=949878, encodeId=84f59498e884, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210309/3ebed07d7c624aadaefeed82ed1b9c54/df9b06b299a24411bd48847eb8c73660.jpg, createdBy=6b342463583, createdName=124219b2m20暂无昵称, createdTime=Sun Mar 21 12:22:52 CST 2021, time=2021-03-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=949772, encodeId=18c3949e72eb, content=学习了,涨知识了!, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDM9swhbgTo7nzqRKzMmzckmEoeTyLQVDCgjqsicjyhxPs0vPoYU6GsSYbCjSkNHicJkz3NL0a0EbUMVdNjkctXI6FocpGKaVr9E/0, createdBy=29392048316, createdName=ms2000001051330459, createdTime=Sat Mar 20 20:25:26 CST 2021, time=2021-03-20, status=1, ipAttribution=)]
    2021-03-21 124219b2m20暂无昵称

    学习了

    0

  8. [GetPortalCommentsPageByObjectIdResponse(id=1663667, encodeId=9f5f166366e80, content=<a href='/topic/show?id=355c9518883' target=_blank style='color:#2F92EE;'>#遗传特征#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=95188, encryptionId=355c9518883, topicName=遗传特征)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6b6b25658831, createdName=ms3830150583600765, createdTime=Mon Aug 30 13:19:26 CST 2021, time=2021-08-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=961931, encodeId=af0f9619314b, content=<a href='/topic/show?id=96fb352ebf' target=_blank style='color:#2F92EE;'>#Blood#</a>点击进入话题查看更多相关文章 或评论时插入话题加入讨论, beContent=null, objectType=article, channel=null, level=null, likeNumber=82, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3527, encryptionId=96fb352ebf, topicName=Blood)], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20221103/2796e00c9b4549e3b313ed9e7accc68f/b52d6d98bbe04782b5a4e2dd1ee80be2.jpeg, createdBy=078e1614372, createdName=MedSciZeng, createdTime=Fri Apr 30 17:32:21 CST 2021, time=2021-04-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1702673, encodeId=8e0c1e0267323, content=<a href='/topic/show?id=ddc9e795159' target=_blank style='color:#2F92EE;'>#细胞淋巴瘤#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77951, encryptionId=ddc9e795159, topicName=细胞淋巴瘤)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=201630414353, createdName=marlenexl, createdTime=Fri Feb 25 12:19:26 CST 2022, time=2022-02-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=953667, encodeId=861a95366ed9, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7c151583732, createdName=446993560, createdTime=Sat Apr 03 22:02:11 CST 2021, time=2021-04-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=950380, encodeId=750095038003, content=学习了,涨知识了, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=430b4201824, createdName=13d789bam70暂无昵称, createdTime=Tue Mar 23 15:48:29 CST 2021, time=2021-03-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1273391, encodeId=a6d112e33910c, content=<a href='/topic/show?id=310d383ef5' target=_blank style='color:#2F92EE;'>#B细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3837, encryptionId=310d383ef5, topicName=B细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6eba113, createdName=xiaoyeshuang, createdTime=Mon Mar 22 11:19:26 CST 2021, time=2021-03-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=949878, encodeId=84f59498e884, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210309/3ebed07d7c624aadaefeed82ed1b9c54/df9b06b299a24411bd48847eb8c73660.jpg, createdBy=6b342463583, createdName=124219b2m20暂无昵称, createdTime=Sun Mar 21 12:22:52 CST 2021, time=2021-03-21, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=949772, encodeId=18c3949e72eb, content=学习了,涨知识了!, beContent=null, objectType=article, channel=null, level=null, likeNumber=57, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/ajNVdqHZLLDM9swhbgTo7nzqRKzMmzckmEoeTyLQVDCgjqsicjyhxPs0vPoYU6GsSYbCjSkNHicJkz3NL0a0EbUMVdNjkctXI6FocpGKaVr9E/0, createdBy=29392048316, createdName=ms2000001051330459, createdTime=Sat Mar 20 20:25:26 CST 2021, time=2021-03-20, status=1, ipAttribution=)]
    2021-03-20 ms2000001051330459

    学习了,涨知识了!

    0

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