title: GSM4471657: HepG2_FOXA2-HyPBase_scRNA; Homo sapiens; OTHER
library_construction_protocol: Single cell RNA-seq libraries were prepared using 10x Genomics' Chromium Single Cell 3' Library and Gel Bead Kit. Each replicate was targeted for recovery of 6,000 cells. Library preparation followed a modified version of the manufacturer's protocol. We prepared the Single Cell Master Mix without RT Primer, replacing it with an equivalent volume of Low TE Buffer. Gel-in-emulsion (GEM) generation and GEM-RT incubation proceeded as instructed. At the end of Post GEM-RT cleanup, we added 36.5 µl Elution Solution I and transferred 36 µl of the eluted sample to a new tube (instead of 35.5 µl and 35 µl, respectively). The eluate was split into two 18 µl aliquots and kept at –20ºC until ready for further processing. One fraction was kept for single cell calling cards library preparation, while the other half was further processed into a single cell RNA-seq library. We added the RT Primer sequence to the products of the scRNA-seq aliquot. We created an RT master mix by adding 20 µl of Maxima 5X RT Buffer, 20 µl of 20% w/v Ficoll PM-400, 10 µl of 10 mM dNTPs, 2.5 µl RNase Inhibitor and 2.5 µl of 100 µM 10x_TSO. To this solution we added 18 µl of the first RT product and 22 µl of ddH2O. Finally, we added 5 µl Maxima H Minus Reverse Transcriptase, mixed by flicking, and centrifuged briefly. This reaction was incubated at 25ºC for 30 minutes followed by 50ºC for 90 minutes and heat inactivated at 85ºC for 5 minutes. The solution was purified using DynaBeads MyOne Silane following 10x Genomics' instructions, beginning at “Post GEM-RT Cleanup – Silane DynaBeads” step D. The remainder of the single cell RNA-seq protocol, including purification, amplification, fragmentation, and final library amplification, followed manufacturer's instructions.
attributes.tag: GEO Accession
attributes.value: GSM4471657