Protocol for low-input proteomic analysis of in situ fixed adult murine muscle stem cells
STAR PROTOCOLS(2023)
摘要
Studying skeletal muscle stem cells (MuSCs) quiescence is challenging as they quickly activate within hours of isolation from muscle. Here, we present a protocol to disassociate and characterize fixed peptides from quiescent MuSCs using trapped ion-mobility time-of-flight mass spectrometry (MS). We describe steps for mouse perfusion, fluorescence-activated cell sorting preparation and sorting, protein extraction, digestion, and liquid chromatography MS analysis. This protocol can be applied to other less-abundant somatic stem cell types using mouse lines with a reporter. For complete details on the use and execution of this protocol, please refer to Zeng et al. (2022, 2023).(1,2)
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