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arXiv 2202.06325q-bio.QMnlin.AOphysics.bio-phphysics.data-anq-bio.CB
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单细胞贝叶斯反卷积

Single-cell Bayesian deconvolution

Gabriel Torregrosa, David Oriola, Vikas Trivedi, Jordi Garcia-Ojalvo

AI总结:

针对单细胞测量中背景噪声掩盖细胞群体天然异质性的问题,提出可高效处理多维测量、精确估计置信区间的非参数贝叶斯反卷积方法,并用于研究小鼠胚胎干细胞分化过程中Brachyury的表达。

摘要:

单个细胞在蛋白质丰度和活性上表现出显著异质性,这通常反映在荧光标记报告基因的宽泛分布中。由于所有细胞组分在一定程度上都具有固有荧光,观测到的分布包含背景噪声,掩盖了细胞群体的天然异质性。这限制了我们表征细胞命运决策过程的能力,而该过程对发育、免疫应答、组织稳态及许多其他生物学功能至关重要。因此,在单细胞测量中分离信号和噪声的贡献十分重要。要严谨解决这一问题,需要从信号中反卷积出噪声分布,但该方向的方法仍然有限。本文提出一种非参数贝叶斯方法体系,可在多维测量上高效执行此类反卷积,且能够精确估计置信区间。我们使用该方法研究了中胚层转录因子Brachyury在经历分化的小鼠胚胎干细胞中的表达情况。

英文摘要:

Individual cells exhibit substantial heterogeneity in protein abundance and activity, which is frequently reflected in broad distributions of fluorescently labeled reporters. Since all cellular components are intrinsically fluorescent to some extent, the observed distributions contain background noise that masks the natural heterogeneity of cellular populations. This limits our ability to characterize cell-fate decision processes that are key for development, immune response, tissue homeostasis, and many other biological functions. It is therefore important to separate the contributions from signal and noise in single-cell measurements. Addressing this issue rigorously requires deconvolving the noise distribution from the signal, but approaches in that direction are still limited. Here we present a non-parametric Bayesian formalism that performs such a deconvolution efficiently on multidimensional measurements, in a way that allows estimating confidence intervals precisely. We use the approach to study the expression of the mesodermal transcription factor Brachyury in mouse embryonic stem cells undergoing differentiation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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