Extracted DRGs were cut once longitudinally (along the nerve) followed by chopping into ~0.5 mm slices. Samples were enzymatically treated for 1 h at 37°C with triturating every 15 min. The resulting cell suspension was then run through 100 µm cell-strainers. 1 ml of 10% Optiprep was loaded under the cell suspension solution using a gel loading tip and centrifugated at 200g for 6 min with a low break. Supernatant was discarded, the cell pellet resuspended and run through a 10 µm strainer. The strainer was rinsed twice and cells were then collected by flushing the filter twice. The cells were kept on ice for 15-20 min, centrifuged for 3 min  at 100 g and resuspended in 900 µl of filtered NMDG-SC/B27/12% optiprep and dispensed immediately into a WaferGen9600 Chip. RNA libraries were prepared for sequencing using standard Illumina protocols
GEO Accession
GSM4457601