NCBI Logo
GEO Logo
   NCBI > GEO > Accession DisplayHelp Not logged in | LoginHelp
GEO help: Mouse over screen elements for information.
          Go
Sample GSM34123 Query DataSets for GSM34123
Status Public on Oct 29, 2004
Title Triple-selected poly(A)+ human liver tissue RNA pooled from several individuals (HS_14288)
Sample type RNA
 
Source name Alexa555-labeled cDNA derived from human liver poly(A)+ RNA
Organism Homo sapiens
Extracted molecule total RNA
 
Description Triple-selected poly(A)+ human liver tissue RNA pooled from several individuals was obtained from Ambion (Austin, TX). First-strand cDNA was generated from 4 µg RNA/rxn with (RNase H-) M-MLV reverse transcriptase, primed with equimolar concentrations of oligo(dT18) and random decamers. The reactions were carried out at 42°C for 2 hours in the presence of 0.5 mM dATP, 0.5 mM dCTP, 0.5 mM dGTP, 0.15 mM dTTP and 0.15 mM amino-allyl dUTP to facilitate the secondary labeling of an amine-reactive fluorescent conjugate.
Following reverse transcription the products were heated at 95°C for 5 minutes to denature the RNA:DNA hybrids and heat-inactivate the reverse transcriptase, after which the RNA template was hydrolyzed by incubating in 0.2 M NaOH at 65°C for 15 minutes. The reaction was then neutralized in 0.3 M HEPES (pH 7.0). Reverse transcription products from 20 separate reactions were produced in this manner and pooled to reduce technical variability between samples.
The cDNAs were precipitated in ethanol:isopropanol (1:1 v/v) and resuspended in 0.1 M NaHCO3 to facilitate coupling of Alexa Fluor 555 NHS esters (Molecular Probes, Eugene, OR) to the reactive groups of the amino-allyl dUTPs. Following incubation at room temperature for 1 hour, the labeled cDNAs were purified with CyScribe GFX glass fiber spin columns (Amersham Bioscience, Piscataway, NJ) and isopropanol-precipitated.
Microarrays were hybridized with 2-3 µg labeled cDNA in 320 µL hybridization buffer (50 mM MES, 0.5 M NaCl, 10 mM EDTA, and 0.005% (v/v) Tween-20) for 20 hours at 50°C. Hybridizations were performed in disposable adhesive chambers (Grace BioLabs, Bend, OR) in a hybridization oven with constant agitation.
After hybridization, the arrays were washed on an orbital platform in non-stringent buffer (6× SSPE, 0.01% [v/v] Tween-20) for 10 minutes at room temperature, then in stringent buffer (100 mM MES, 0.1 M NaCl, 0.01% Tween-20) for 30 minutes at 45°C. This was followed by a 5-minute wash in non-stringent buffer and a 4-minute wash in 0.2X SSC.
The arrays were dried with compressed nitrogen. Fluorescence micrographs were acquired with an Axon 4000B laser scanner at 5 µm resolution and intensity data were extracted with NimbleScan software (NimbleGen Systems).
Keywords = liver tissue, poly(A)+ RNA
 
Submission date Oct 29, 2004
Last update date Oct 28, 2005
Contact name Paul Bertone
E-mail(s) paul.bertone@yale.edu
Phone (203) 432-5405
Organization name Yale University
Street address
City New Haven
State/province CT
ZIP/Postal code 06520
Country USA
 
Platform ID GPL1588
Series (1)
GSE1904 Maskless photolithography genome tiling experiment

Data table header descriptions
ID_REF
X X coordinate of the array feature
Y Y coordinate of the array feature
VALUE Median fluorescence signal intensity of the array feature, calculated over 9 pixels at 5 m resolution
SIGNAL_MEAN Mean fluorescence signal intensity of the array feature, calculated over 9 pixels at 5 m resolution
SIGNAL_STD Standard deviation of the fluorescence signal for the array feature

Data table
ID_REF X Y VALUE SIGNAL_MEAN SIGNAL_STD
1.1 1 1 42 44.666668 8.732124
1.3 1 3 57.5 56.11111 12.404077
1.5 1 5 43 47.555557 10.829487
1.7 1 7 74.5 75.44444 12.73883
1.9 1 9 65 77.888885 31.581024
1.11 1 11 37.5 40.77778 7.1898847
1.13 1 13 61.5 65.666664 17.67767
1.15 1 15 50.5 54.11111 9.571369
1.17 1 17 47 54.22222 13.150834
1.19 1 19 233.5 291.77777 127.77987
1.21 1 21 55.5 66 29.52118
1.23 1 23 48 49 6.4807405
1.25 1 25 44.5 45.22222 11.508451
1.27 1 27 56 66 17.76232
1.29 1 29 46.5 47 4.031129
1.31 1 31 53.5 59.333332 23.66432
1.33 1 33 61 62.333332 8.170068
1.35 1 35 41 43.11111 6.7164807
1.37 1 37 42.5 47.11111 8.978369
1.39 1 39 50.5 51.666668 5.477226

Total number of rows: 389425

Table truncated, full table size 14481 Kbytes.




Supplementary data files not provided

| NLM | NIH | GEO Help | Disclaimer | Accessibility |
NCBI Home NCBI Search NCBI SiteMap