title: GSM8880335: DMSO, scRNA-seq (cDNA); Homo sapiens; RNA-Seq
library_construction_protocol: scRNA-seq：SC-islets were dissociated into single cells with TrypLE and resuspended with DPBS with 0.5% fat-acid -free BSA. Added DNase I to eliminate the DNA released form the dead cells to prevent cell caking and placed the tubes containing cells on ice for preservation. scATAC-seq: Cells were isolated per 10x Genomics manufacture instructions. Nuclei isolation was performed according to the protocol of 10× Genomics. scRNA-seq：DNBelab C Series High-throughput Single-Cell RNA Library (MGI, #940-000047-00) was utilized for scRNA-seq library preparation. In brief, the single-cell suspensions were converted to barcoded scRNA-seq libraries through steps including droplet encapsulation, emulsion breakage, mRNA captured beads collection, reverse transcription, cDNA amplification and purification. cDNA production was sheared to short fragments with 250-400 bp, and indexed sequencing libraries were constructed according to the manufacturer's protocol. Qualification was performed using Qubit ssDNA Assay Kit (Thermo Fisher Scientific) and Agilent Bioanalyzer 2100. All libraries were further sequenced by the MGISEQ-2000RS with pair-end sequencing. The sequencing reads contained 30-bp read 1 (including the 10-bp cell barcode 1, 10-bp cell barcode 2 and 10-bp unique molecular identifiers (UMI)), 100-bp read 2 for gene sequences and 10-bp barcodes read for sample index.scATAC-seq: The library was constructed according to the Chromiun signal Cell ATAC Reagent Kits protocol (10× Genomics).