Nanoscale or single cell technologies are critical for biomedical applications. However, current mass spectrometry (MS)-based proteomic approaches require samples comprising a minimum of thousands of cells to provide in-depth profiling. Here, we report the development of a nanoPOTS (Nanodroplet Processing in One pot for Trace Samples) platform as a major advance in overall sensitivity. NanoPOTS dramatically enhances the efficiency and recovery of sample processing by downscaling processing volumes to 3000 proteins were consistently identified from as few as 10 cells. Furthermore, we demonstrate robust quantification of ~2400 proteins from single human pancreatic islet thin sections from type 1 diabetic and control donors, illustrating the application of nanoPOTS for spatially resolved proteome measurements from clinical tissues.
Revised: May 17, 2019 |
Published: February 28, 2018
Zhu Y., P.D. Piehowski, R. Zhao, J. Chen, Y. Shen, R.J. Moore, and A.K. Shukla, et al. 2018.Nanodroplet processing platform for deep and quantitative proteome profiling of 10–100 mammalian cells.Nature Communications 9, no. 1:882.PNNL-SA-125235.doi:10.1038/s41467-018-03367-w