Oncotarget:小分子CP有治疗p53异常的多发性骨髓瘤潜力

2017-08-07 Emma MedSci原创

多发性骨髓瘤(MM),WHO目前将其归为B细胞淋巴瘤的一种,称为浆细胞骨髓瘤/浆细胞瘤。其特征为骨髓浆细胞异常增生伴有单克隆免疫球蛋白或轻链(M蛋白)过度生成,极少数患者可以是不产生M蛋白的未分泌型MM。

多发性骨髓瘤(MM),WHO目前将其归为B细胞淋巴瘤的一种,称为浆细胞骨髓瘤/浆细胞瘤。其特征为骨髓浆细胞异常增生伴有单克隆免疫球蛋白或轻链(M蛋白)过度生成,极少数患者可以是不产生M蛋白的未分泌型MM。MM起病徐缓,常伴有多发性溶骨性损害、贫血、肾脏损害,并且由于正常免疫球蛋白的生成受抑制,因此容易出现各种细菌性感染,早期无明显症状,易被误诊。活性氧(ROS)是各种细胞过程的正常副产物,在癌细胞病理生理学中具有双重功能。ROS在低到中等水平时,作为信号传导激活细胞增殖,迁移,侵袭和血管生成,ROS高水平时诱导细胞死亡。研究提示,几种抗癌化合物(如蛋白酶体抑制剂)诱导的凋亡是通过ROS过度产生触发,然而目前在MM临床治疗中,还没有氧化应激为主要作用机制的药物。发表于Oncotarget的一篇文章中,研究人员发现CP(p53激活小分子CP-31398)有效抑制MM细胞系、原发性MM分离株甚至小鼠MM异种移植物的生长。CP是通过增加ROS产生诱导MM细胞的内在凋亡,并且无论p53状态如何,CP诱导的凋亡都发生,这表明CP具有相关的其他作用机制。在目前的临床治疗中,p53异常MM患者的预后不

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    2018-04-27 jml2009
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    2017-11-24 仁医06
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    2018-01-01 宋威
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    2017-08-11 大爰

    学习了谢谢分享!!

    0

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    2017-08-09 zhishijing
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    2017-08-08 130****4638

    学习了谢谢分享

    0

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继去年美国血液病学会(ASH)年会的明星“抗CD38单克隆抗体”后,今年美国临床肿瘤学会(ASCO)会议上MM治疗领域最为耀眼的明星无疑是“BCMA”(B cell maturation antigen,B细胞成熟抗原)。BCMA是一种肿瘤坏死因子(TNF)受体超家族成员的膜蛋白,主要表达于少数成熟B细胞和浆细胞,而其他组织和器官则很少表达BCMA。BCMA受BAFF和APRIL两种因子的调控

JCO:新诊断多发性骨髓瘤自体干细胞移植后来那度胺维持治疗——荟萃分析

在多个新诊断多发性骨髓瘤(NDMMD)患者的随机对照试验(RCT)中,自体干细胞移植(ASCT)后来那度胺的维持治疗较安慰剂或观察显示出无进展生存期(PFS)的延长。所有的研究都以PFS为主要终点,而没有以总生存率(OS)为主要终点。近日在JCO上发表的一篇文章进行了一项荟萃分析,以便更好地了解来那度胺维持治疗对此的影响。

Br J Haematol:如何改良多发性骨髓瘤一线治疗方案以降低毒性?

2017年4月,发表在《Br J Haematol》的由美国科学家进行的不能进行高剂量化疗的多发性骨髓瘤患者使用苯达莫司汀、硼替佐米和地塞米松(BBD)一线治疗的2期研究表明,降低强度但是增加治疗时间的改良会有更好的结局。

CCLM:miR-4449可作为多发性骨髓瘤中潜在的血液标志物

miRNA在不同的生物过程中起作用,包括发育,细胞生长,细胞凋亡和造血作用。此外,研究表明它们在癌症中也发挥很多重要的调节作用。 来自中国南通大学的研究人员使用微阵列分析和实时定量PCR(RT-qPCR)检查了CD138 +原代多发性骨髓瘤(MM)细胞中的miRNA表达。通过RT-qPCR检测71例初级MM患者和46例健康对照的血清miR-4449表达水平。

JCO:磁共振成像和[18F]氟脱氧葡萄糖正电子发射断层扫描在有症状多发性骨髓瘤患者的诊断与维持治疗前的前瞻性评估研究:IMAJEM研究结果

众所周知磁共振成像(MRI)和正电子发射断层扫描(PET-CT)是多发性骨髓瘤(MM)患者重要的检查手段。2017年7月在JCO上发表的一篇文章对MM患者进行了一项前瞻性研究,目的是比较MRI和PET-CT对骨损伤的诊断及这些技术的预后价值。

CLIN CANCER RES:Ricolinostat联合硼替佐米以及地塞米松治疗复发或难治性多发性骨髓瘤

抑制组蛋白脱乙酰基酶(HDAC)可以增强蛋白酶体抑制作用治疗多发性骨髓瘤的疗效,但是也会增加毒性。临床前研究发现HDAC6通过蛋白质降解过程中的聚集体/自噬途径调节蛋白体酶抑制抵抗。CLIN CANCER RES近期发表了一篇文章,报道HDAC6选择性抑制剂Ricolinostat的临床试验结果。