Streamlined single-cell proteomics by an integrated microfluidic chip and data-independent acquisition mass spectrometry.

Streamlined single-cell proteomics by an integrated microfluidic chip and data-independent acquisition mass spectrometry.
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DOI:
10.1038/s41467-021-27778-4
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发表时间:
2022-01-10
影响因子:
16.6
通讯作者:
Tu HL
Tu HL
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Gebreyesus ST;Siyal AA;Kitata RB;Chen ES;Enkhbayar B;Angata T;Lin KI;Chen YJ;Tu HL

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Single-cell proteomics can reveal cellular phenotypic heterogeneity and cell-specific functional networks underlying biological processes. Here, we present a streamlined workflow combining microfluidic chips for all-in-one proteomic sample preparation and data-independent acquisition (DIA) mass spectrometry (MS) for proteomic analysis down to the single-cell level. The proteomics chips enable multiplexed and automated cell isolation/counting/imaging and sample processing in a single device. Combining chip-based sample handling with DIA-MS using project-specific mass spectral libraries, we profile on average ~1,500 protein groups across 20 single mammalian cells. Applying the chip-DIA workflow to profile the proteomes of adherent and non-adherent malignant cells, we cover a dynamic range of 5 orders of magnitude with good reproducibility and <16% missing values between runs. Taken together, the chip-DIA workflow offers all-in-one cell characterization, analytical sensitivity and robustness, and the option to add additional functionalities in the future, thus providing a basis for advanced single-cell proteomics applications. Single-cell proteomics is an emerging approach to characterize cell-to-cell differences. Here, the authors develop chips that enable complete proteomic sample processing down to the single-cell level and integrate them with DIA-MS into a streamlined single-cell proteomics workflow.
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