 |
 |
GEO help: Mouse over screen elements for information. |
|
| Status |
Public on Jul 06, 2015 |
| Title |
RPEB_P4_D32_A83 |
| Sample type |
SRA |
| |
|
| Source name |
Fetal RPE-Donor "B"
|
| Organism |
Homo sapiens |
| Characteristics |
donor id: hfRPE-071709
plating density: 80,000 cells/cm2
passage number: 4
culture time: 32 Days
treatment: 500 nM A-83-01
substrate: TC Plastic
|
| Growth protocol |
RPE cells were isolated from fetal donor eyes (Advanced Biosciences Resources, Alameda, CA USA) according to the methods of Hu and Bok [Mol. Vis. 2001, 7:14-19; Methods Mol. Biol. 2010, 652:55-73]. Beyond the initial isolation, all cell culture was carried out using a base medium described by Maminiskis [Invest. Ophthalmol. Vis. Sci.2006, 47:3612-3624]. For 2-3 days post-plating the medium included 15% heat inactivated fetal calf serum. Thereafter, it was reduced to 5%. To generate a working cell bank, primary fetal RPE stocks were expanded approximately 10-fold and these working stocks were designated Passage 0. For routine serial passage, cells were harvested using trypsin digestion and plated at 4,000 cells/cm2. At approximately 80% confluence (every 3-5 days depending on passage number) the cells were enzymatically harvested and re-seeded at 4,000 cells/cm2. To determine the extent to which inhibition of TGF signaling restores the capacity to acquire a prototypical RPE phenotype in late passage cells, Passage 4 cells were plated at 80,000 cells/cm2 and maintained in medium supplemented with 500 nM A-83-01 for 32 day and compared with differentiated Passage 0 and undifferentiated, untreated Passage 4 cultures. Cultures were carried out on laminin-coated porous supports (mouse laminin, Life Technologies, Grand Island, NY USA; Millicell-HA Culture Inserts, EMD Millipore Inc., Billerica, MA USA) or laminin-coated tissue culture plastic as indicated. All cultures were fed every 2-4 days by complete exchange of the medium.
|
| Extracted molecule |
total RNA |
| Extraction protocol |
Total RNA was purified using miRNeasy mini-preps (Qiagen Inc., Valencia, CA USA)
PolyA RNA was purified from 1 microgram of total RNA using the Magnetic mRNA Isolation Kit (New England Biolabs, Inc ., Ipswitch MA USA) and mRNA-Seq libraries were constructed using the Ion Total RNA-Seq Kit v2 (Life Technologies, Inc., Grand Island NY USA).
|
| |
|
| Library strategy |
RNA-Seq |
| Library source |
transcriptomic |
| Library selection |
cDNA |
| Instrument model |
Ion Torrent Proton |
| |
|
| Data processing |
Base-calling was carried out using Torrent Suite 4.4 and default parameters
Read alignment was accomplished using a 2-stage pipeline. The ten 5-prime bases from each sequence were trimmed using FASTX Trimmer 0.0.14. Sequences with a remaining length of 50 bases or greater were then aligned to the human genome (hg38 + 45S-RNA and 5S-RNA bait sequences) using TopHat 2.0.12 (Bowtie2 2.2.3) and settings optimized for variable read-length Ion Torrent sequences: read-mismatches = 4, read-gap-length = 4, read-edit-dist = 8, max-multihits =1, b2-i = S,1,1.15, b2-rdg = 5,2. Any unmapped sequences were passed to TMAP 3.4.1 and aligned using 5-prime and 3-prime soft-clipping (g = 0). The resulting TopHat and TMAP alignments were merged into a single alignment file and any sequences mapping to the 45S or 5S RNA bait sequences were deleted.
Gene-level RNA quantification was determined using Partek Genomics Suite 6.6 and the hg38 RefSeq Transcript annotation (10/17/2014). Only reads aligned to exons were considered in the determination of the number of reads per gene. In the case where there were two sequencing runs for the same condition (RPEC_P0_D32) the alignments results were combined prior to quantification. Any fractional read count values were rounded to the nearest integer.
Protein coding RNA gene level results were normalized using the trimmed mean of the M-values (TMM) method of Robinson and Oshlack [Genome Biology 2010, 11:R25] as implemented by “edgeR”. Using the raw integer read counts for protein coding genes (HUGO Gene Nomenclature Database, 4/13/2015) as input, the normalization factor (norm.factor) and total number of mRNAs reads for each sample (lib.size) were determined. The final processed normalized data for each gene is expressed as reads per million aligned reads (RPM) where RPM = (raw read count * 1 x 106) /(norm.factor * lib.size) .
Genome_build: hg38
Supplementary_files_format_and_content: Tab-delimited text; Annotations, mRNA gene-level raw read counts (Reads) and TMM-normalized read counts per million mRNA alignments (RPM) for all protein coding genes
|
| |
|
| Submission date |
Apr 15, 2015 |
| Last update date |
May 15, 2019 |
| Contact name |
Monte J. Radeke |
| E-mail(s) |
radeke@ucsb.edu
|
| Phone |
805-893-3695
|
| Organization name |
University of California, Santa Barbara
|
| Department |
Neuroscience Research Institute
|
| Lab |
Center for the Study of Macular Degeneration
|
| Street address |
Neuroscience Research Institiute
|
| City |
Santa Barbara |
| State/province |
CA |
| ZIP/Postal code |
93106-5060 |
| Country |
USA |
| |
|
| Platform ID |
GPL17303 |
| Series (2) |
| GSE67898 |
Reversal of persistent wound-induced retinal pigmented epithelial-to-mesenchymal transition by the TGFb pathway inhibitor, A-83-01. |
| GSE67899 |
Delay and restoration of persistent wound-induced retinal pigmented epithelial-to-mesenchymal transition by TGF-beta pathway inhibitors: Implications for age-related macular degeneration |
|
| Relations |
| Reanalyzed by |
GSM2075273 |
| BioSample |
SAMN03488479 |
| SRA |
SRX998432 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSM1657682_RPEB_P4_D32_A83.txt.gz |
496.1 Kb |
(ftp)(http) |
TXT |
SRA Run Selector |
| Raw data are available in SRA |
| Processed data provided as supplementary file |
| Processed data are available on Series record |
|
|
|
|
 |
