Multivalent state transitions shape the intratumoral composition of small cell lung carcinoma.

Multivalent state transitions shape the intratumoral composition of small cell lung carcinoma.
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DOI:
10.1126/sciadv.abp8674
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发表时间:
2022-12-14
期刊:
影响因子:
13.6
通讯作者:
--
中科院分区:
综合性期刊1区
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迄今为止的研究还没有解决不同的转录程序如何导致小细胞肺癌(SCLC)的瘤内异质性,这是一种与预后不良相关的侵袭性肿瘤。在这里,我们确定不同的和可交换的转录状态,赋予离散的功能属性在个别小细胞肺癌肿瘤。我们结合了联合收割机的综合方法,包括52,975个单细胞的转录组,单细胞水平的细胞状态动态的高分辨率测量,以及使用具有相关临床结果的未经治疗的异种移植物的功能和相关研究。我们发现,个体小细胞肺癌肿瘤含有独特比例的稳定细胞状态,由双向细胞状态转换。使用靶向表观基因组的药物,我们通过改变个体状态转换速率来部分地重新配置肿瘤状态组成。我们的研究结果揭示了新的见解,如何单细胞过渡行为促进细胞状态平衡SCLC,并建议,轻便的可塑性的基础上,其耐药性和致命性。小细胞肺癌的肿瘤内多样性是由细胞程序中高度协调的开关形成的。
Studies to date have not resolved how diverse transcriptional programs contribute to the intratumoral heterogeneity of small cell lung carcinoma (SCLC), an aggressive tumor associated with a dismal prognosis. Here, we identify distinct and commutable transcriptional states that confer discrete functional attributes in individual SCLC tumors. We combine an integrative approach comprising the transcriptomes of 52,975 single cells, high-resolution measurement of cell state dynamics at the single-cell level, and functional and correlative studies using treatment naïve xenografts with associated clinical outcomes. We show that individual SCLC tumors contain distinctive proportions of stable cellular states that are governed by bidirectional cell state transitions. Using drugs that target the epigenome, we reconfigure tumor state composition in part by altering individual state transition rates. Our results reveal new insights into how single-cell transition behaviors promote cell state equilibrium in SCLC and suggest that facile plasticity underlies its resistance to therapy and lethality. Intratumoral diversity in small cell lung cancer is shaped by highly coordinated switches in cellular programs.
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