Sequential apoptotic and multiplexed proteomic evaluation of single cancer cells.

Sequential apoptotic and multiplexed proteomic evaluation of single cancer cells.
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单个癌细胞的顺序凋亡和多重蛋白质组学评价。

DOI:
10.1126/sciadv.adg4128
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发表时间:
2023-06-23
期刊:
影响因子:
13.6
通讯作者:
Bhola, Patrick D.
Bhola, Patrick D.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Lecky, Emmalyn;Mukherji, Atreyi;German, Rebecca;Antonellis, Gabriella;Lin, Jia-Ren;Yorsz, Michael;McQueeney, Kelley E.;Ryan, Jeremy;Ng, Kimmie;Sicinska, Ewa;Sorger, Peter K.;Letai, Anthony;Bhola, Patrick D.

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癌症复发的一个潜在原因是治疗前化疗耐药亚群。鉴定对于治疗诱导的细胞死亡准备不足的亚群的靶向特征可以改善癌症治疗。在这里,我们开发并验证了实时BH 3谱,这是一种在凋亡蛋白酶激活上游发生的预处理凋亡敏感性的活的和功能性单细胞测量。在相同的单细胞上,我们进行循环免疫荧光,这使得同一细胞上超过30种蛋白质的多重免疫荧光成为可能。使用培养的细胞和快速离体培养的结肠癌患者来源的异种移植物(PDX)模型,我们确定巴克作为一个单变量相关的凋亡启动,发现不良引发的亚群可以对应于细胞周期的特定阶段,并在一些PDX模型中,确定增加的表达Bcl-XL,Mcl-1,或Her 2的亚群是不良引发的凋亡。最后,我们生成并验证了单细胞启动的数学模型,该模型描述了可靶向蛋白质如何促进凋亡启动。对同一细胞的凋亡启动和蛋白质组学的功能测量鉴定了启动不良亚群的特征。
A potential cause of cancer relapse is pretreatment chemoresistant subpopulations. Identifying targetable features of subpopulations that are poorly primed for therapy-induced cell death may improve cancer therapy. Here, we develop and validate real-time BH3 profiling, a live and functional single-cell measurement of pretreatment apoptotic sensitivity that occurs upstream of apoptotic protease activation. On the same single cells, we perform cyclic immunofluorescence, which enables multiplexed immunofluorescence of more than 30 proteins on the same cell. Using cultured cells and rapid ex vivo cultures of colon cancer patient-derived xenograft (PDX) models, we identify Bak as a univariate correlate of apoptotic priming, find that poorly primed subpopulations can correspond to specific stages of the cell cycle, and, in some PDX models, identify increased expression of Bcl-XL, Mcl-1, or Her2 in subpopulations that are poorly primed for apoptosis. Last, we generate and validate mathematical models of single-cell priming that describe how targetable proteins contribute to apoptotic priming. Functional measurement of apoptotic priming and proteomics on the same cell identifies features of poorly primed subpopulations.
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