Eur Urol:ATM缺失的晚期前列腺癌:PARP和ATR抑制剂

2020-12-13 AlexYang MedSci原创

之前的研究在转移性前列腺癌(PC)中发现了有害的ATM变异;PARP抑制对该亚型前列腺癌具有抗肿瘤活性,但只有一些ATM缺失的PC有响应。

之前的研究在转移性前列腺癌(PC)中发现了有害的ATM变异;PARP抑制对该亚型前列腺癌具有抗肿瘤活性,但只有一些ATM缺失的PC有响应。

最近,有研究人员表征了ATM缺失致死PC,并研究了该亚型的合成致死治疗策略。研究结果表明,研究人员在68/631(11%)PC患者的至少一次活检中检测到ATM IHC缺失,且存在同步和异时的患者内异质性;46/71(65%)的有ATM缺失的活检通过NGS检测存在ATM突变或缺失。ATM IHC缺失与晚期疾病的更差结果无关,但ATM缺失与基因组不稳定性的增加有关(NtAI:等位基因不平衡延伸至端粒的亚染色体区域数,P=0.005;大规模转换,P=0.05)。在体外,ATM缺失PC模型对ATR抑制敏感,但对PARP抑制的敏感性不一;在这些模型中,PARP和ATR抑制联用可以得到优越的抗肿瘤活性。

前列腺癌细胞系模型中ATM缺失和对PARP和ATR抑制剂单用或联用的敏感性

最后,研究人员指出,PC中的ATM缺失并不总是能用靶向NGS检测到,且与基因组不稳定有关,并且对ATR和PARP联合抑制最为敏感。

原始出处:

Antje Neeb , Nicolás Herranz , Sara Arce-Gallego et al. Advanced Prostate Cancer with ATM Loss: PARP and ATR Inhibitors. Eur Urol. Nov 2020

 

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    2021-01-05 jklm09
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    2020-12-15 lishiwen
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    2020-12-13 misszhang

    前列腺癌相关研究,学习了,谢谢梅斯

    0

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    2020-12-13 ms3000000449926787

    学习了!

    0

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前列腺癌(PCa)作为西方国家男性中最常被诊断出的恶性肿瘤之一,是癌症相关死亡的第二大主要原因。2018年,全球约有130万新确诊PCa病例。在中国,前列腺癌的发病率和死亡率逐年增加。

Eur J Cancer:雄激素剥夺疗法联合放疗治疗中危前列腺癌的3期临床试验结果

雄激素剥夺疗法联合放疗在中危前列腺癌中的作用仍然存在争议,特别是对于接受剂量递增放疗的患者。本研究比较了接受ADT和两种不同剂量RT治疗的IRPC患者与单纯放疗的患者预后。

Prostate Cancer P D:前列腺癌患者中抵抗训练效果所需的最小剂量

前列腺癌的积极治疗会导致一些副作用,如疲劳、抑郁和焦虑症状,影响相当一部分患者的整体生活质量(QoL)和幸福感。基于阻力的运动干预能够减少或减轻这些治疗相关副作用。然而,获得这些益处所需的最小剂量尚不

Prostate Cancer P D:全基因组关联研究确定了孕激素受体在良性前列腺增生症风险中的作用

良性前列腺增生(BPH)是常见的非癌性前列腺增生,通常伴有下尿路症状(LUTS),能够导致复杂的泌尿、膀胱或肾脏疾病。随着年龄的增长,大多数老年男性会受到BPH的影响。

Prostate Cancer P D:转移去势抵抗性前列腺癌患者中CTCs和tdEVs的自动计数和表型特征分析

尽管大多数转移去势抵抗性前列腺癌(mCRPC)患者最初受益于雄激素受体信号转导抑制剂(ARSi)的治疗,但不可避免地出现耐药性。最近,有研究人员调查了自动循环肿瘤细胞(CTC)和肿瘤源性细胞外囊泡(t