Single‐cell proteomics by mass spectrometry: Advances and implications in cancer research

Tan, Yong Chiang; Low, Teck Yew; Lee, Pey Yee; Lim, Lay Cheng

doi:10.1002/pmic.202300210

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2024

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Review and Practical Guide for Getting Started With Single‐Cell Proteomics

Lin,

Webber,

Nwosu

et al. 2024

Proteomics

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Single‐cell proteomics (SCP) has advanced significantly in recent years, with new tools specifically designed for the preparation and analysis of single cells now commercially available to researchers. The field is sufficiently mature to be broadly accessible to any lab capable of isolating single cells and performing bulk‐scale proteomic analyses. In this review, we highlight recent work in the SCP field that has significantly lowered the barrier to entry, thus providing a practical guide for those who are newly entering the SCP field. We outline the fundamental principles and report multiple paths to accomplish the key steps of a successful SCP experiment including sample preparation, separation, and mass spectrometry data acquisition and analysis. We recommend that researchers start with a label‐free SCP workflow, as achieving high‐quality and quantitatively accurate results is more straightforward than label‐based multiplexed strategies. By leveraging these accessible means, researchers can confidently perform SCP experiments and make meaningful discoveries at the single‐cell level.

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