Blood:弥漫性大B细胞淋巴瘤CD37基因免疫优势位点的高发突变

2019-08-02 MedSci MedSci原创

四次跨膜蛋白CD37主要表达于成熟B淋巴细胞表面,目前正被作为治疗B细胞淋巴瘤的新靶点进行研究。近期,研究人员发现在Cd37敲除的小鼠中,CD37缺失可诱导形成自发性B细胞淋巴瘤,而且还与弥漫性大B细胞淋巴瘤(DLBCL)患者的预后不良相关。

中心点:

CD37基因上的功能丧失性突变主要见于在免疫优势位点的弥漫性大B细胞淋巴瘤

CD37突变型淋巴瘤B细胞表现为CD37细胞表面定位受损,这使抗CD37治疗或可以治疗B细胞淋巴瘤

摘要:

四次跨膜蛋白CD37主要表达于成熟B淋巴细胞表面,目前正被作为治疗B细胞淋巴瘤的新靶点进行研究。近期,研究人员发现在Cd37敲除的小鼠中,CD37缺失可诱导形成自发性B细胞淋巴瘤,而且还与弥漫性大B细胞淋巴瘤(DLBCL)患者的预后不良相关。

本研究共对137例原发性DLBCL患者进行CD37突变分析,包括44例起源于睾丸或中枢神经系统的原发性免疫优势位点相关性DLBCL(IP-DLBCL)。

CD37突变在IP-DLBCL病例中的外显率高达23%(10/44),但在非IP-DLBCL病例中未检测到CD37突变。检测到的CD37突变包括10个错义突变、1个缺失和3个剪接位点突变。CD37错义突变的建模和功能分析显示,功能性丧失表现位淋巴瘤B细胞细胞膜上的CD37蛋白表达受损。

本研究为深入研究IP-DLBCL的分子机制提供了新的思路,提示抗CD37治疗对无CD37突变的DLBCL患者更有益。

原始出处:

Suraya Elfrink, et al.High frequency of inactivating tetraspanin CD37 mutations in diffuse large B-cell lymphoma at immune-privileged sites.Blood 2019 :blood.2019001185; doi: https://doi.org/10.1182/blood.2019001185

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    2019-08-04 docwu2019
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    2019-08-02 医者仁心5538

    学习了

    0

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    2019-08-02 329523732

    不错

    0

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在1期试验中,抗体-药物偶联物(ADCs) Polatuzumab vedotin(pola)和 Pinatuzumab vedotin(pina)表现出临床活性和耐受性。现研究人员在6个国家的39个研究中心开展一多中心的、开放性2期研究,对比利妥昔单抗联合pola (R-pola)或pina (R-pina)治疗复发性/难治性弥漫性大B细胞淋巴瘤和滤泡性淋巴瘤的疗效。将招募的患者按1:1随机分至

来那度胺在弥漫性大B细胞淋巴瘤中的应用

第15届国际淋巴瘤大会(ICML)在风光旖旎的瑞士·卢加诺(Lugano)隆重举行。目前国际淋巴瘤大会已成为全球淋巴瘤领域最具影响力的盛会,3500多名来自世界各地的淋巴瘤领域专家参加了这次学术盛会。本次ICML大会更新了来那度胺治疗弥漫性大B细胞淋巴瘤(DLBCL)的多项研究成果,小编带您先睹为快。

Blood:PD-1/PD-L1和p53缺失协同促进弥漫性大B细胞淋巴瘤进展

难治性或复发性弥漫性大B细胞淋巴瘤(DLBCL)常与活化的B细胞样(ABC)亚型和驱动NF-kB的固有性激活和影响B细胞的终末分化的基因突变相关。

Clin Cancer Res:弥漫性大B细胞淋巴瘤(DLBCL)治疗耐药新机制

弥漫性大B细胞淋巴瘤(DLBCL)是淋巴瘤中最常见的类型,含利妥昔单抗的免疫化疗方案显着改善了患者的总生存,但仍有部分患者=原发耐药或进展或复发,并且预后差,其中对利妥昔单抗的耐药是其预后不良的重要原因。近日,Clinical Cancer Research杂志发表了一项揭示DLBCL利妥昔单抗耐药新机制的研究成果。该研究由河南省肿瘤医院刘艳艳教授团队与中美(河南)荷美尔肿瘤研究院、美国内布拉斯加