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Table 1 SCoPE2 improves quantitative accuracy, depth of proteome coverage, ease of sample preparation, and cost-effectiveness 2–10-fold over SCoPE-MS. Quantitative accuracy is evaluated by comparing relative protein ratios from in silico averaged single cells to bulk data, shown in Fig. 4c. The number of single-cell measurements per hour was estimated considering both filtering levels described in the “Methods” section. The cost of SCoPE-MS does not include the cost of sonication instrumentation. The throughput estimates for SCoPE2 are based on TMT 16-plex

From: Single-cell proteomic and transcriptomic analysis of macrophage heterogeneity using SCoPE2

Benchmark

SCoPE-MS

SCoPE2

Relevant figure

Correlation to benchmark fold changes

0.2

0.89

4c

Purity of ions isolated for quantification

79%

97%

3d

Single-cell protein measurements/h

 - “1% FDR” filtering

610

5213

3f

 - “Stringent” filtering

N/A

3417

3f

Sample preparation

 - Time, h/cell

< 1

< 0.03

3a

 - Cost, USD/cell

< 10

< 1

1a

LC-MS/MS

 - Time, h/cell

0.50

0.12

3a

 - Cost, USD/cell

48–96

10–20

1a

  1. LC-MS/MS cost assumes MS facility fee of $100–200 per hour