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Sample GSM3440180 Query DataSets for GSM3440180
Status Public on Nov 02, 2018
Title homeostatic Hydra, male spike-in (D03-MA)
Sample type SRA
 
Source name cell suspension from homeostatic Hydra vulgaris AEP
Organism Hydra vulgaris
Characteristics strain: Hydra vulgaris AEP (transgenic line nGreen, Robert E. Steele)
tissue: whole animal
Treatment protocol Prior to Drop-seq cells were dissociated for 90min using Pronase E (VWR, E629-1G) as described previously (Greber et al.,1992) at a concentration of ~75u/mL. 40-50 Hydra were washed twice in sterile filtered Hydra medium and transferred into a 1.5mL eppendorf tube. The medium was removed and 1mL Pronase solution was added. Cells were dissociated for 90min at room temperature (22-24C) with agitation on a nutator. Cells were washed twice and resuspended in resuspended in a salt-adjusted Hydra-PBS (10 mM PO43−, 2mM NaCL, 0.1mM KCl, 0.05% BSA, pH7.6).
Growth protocol Hydra vulgaris AEP were cultured according to standard protocol (Lenhoff, 1983) at 18˚C.
Extracted molecule polyA RNA
Extraction protocol Cells were encapsulated using a standard Drop-seq apparatus. Lysis occurred in droplets in Drop-seq lysis buffer (www.drop-seq.org).
Libraries were prepared according to Drop-seq Protocol v3.1 (12/28/2015), with 14 cycles of PCR amplification and 148 STAMPs per PCR reaction.
 
Library strategy RNA-Seq
Library source transcriptomic
Library selection cDNA
Instrument model Illumina NextSeq 500
 
Description D03-MA_S2
processed data file: Hydra_DS_genome_UMICounts.txt, Hydra_DS_transcriptome_UMICounts.txt
Data processing library strategy: Drop-seq
Data was processed using Drop-seq tools v1.01, according to Drop-seq protocol v3.1 (http://www.dropseq.org/). Read 2 was aligned with Bowtie2 v 2.2.6 to 1) the Hydra vulgaris 105 2.0 genome using 2.0 genome gene models and 2) a Hydra vulgaris AEP transcriptome reference (aepLRv2)(references available at https://research.nhgri.nih.gov/hydra/). Each aligned read was tagged with its mate-pair UMI and cell barcode (which comprise Read 1). Each aligned exonic read was tagged with a gene name. Cell barcodes were corrected for synthesis errors. A digital expression matrix was built by counting the number of unique UMIs per gene within each cell; columns are cells, and rows are genes. The first inflection point was estimated on a cumulative sum plot of the digital expression matrix to determine the number of cells in the sample. Genome UMI counts are provided in supplementary file Hydra_DS_genome_UMICounts.txt. Transcriptome UMI counts are provided in supplementary file Hydra_DS_transcriptome_UMICounts.txt.
genome build: Hydra vulgaris 2.0 genome, Hydra vulgaris AEP transcriptome (aepLRv2)(https://research.nhgri.nih.gov/hydra/)
Supplementary_files_format_and_content: tab-delimited text files of UMI counts for genome mapping (Hydra_DS_genome_UMICounts.txt) and transcriptome mapping (Hydra_DS_transcriptome_UMICounts.txt)
Supplementary_files_format_and_content: tab-delimited text file of isoform level expression estimates
 
Submission date Oct 22, 2018
Last update date Jul 30, 2019
Contact name Celina E Juliano
E-mail(s) cejuliano@ucdavis.edu
Organization name University of California Davis
Department MCB
Lab Julianolab
Street address 149 Briggs Hall
City Davis
State/province California
ZIP/Postal code 95616
Country USA
 
Platform ID GPL25713
Series (1)
GSE121617 Stem cell differentiation trajectories in Hydra resolved at single cell resolution
Relations
BioSample SAMN10267711
SRA SRX4913470

Supplementary data files not provided
SRA Run SelectorHelp
Raw data are available in SRA
Processed data are available on Series record

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