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Sample GSM205792 Query DataSets for GSM205792
Status Public on Jun 14, 2008
Title Ethanol Control 3 (Clutch B, Group 1, P2)
Sample type RNA
Source name whole hindlimbs, ethanol exposed, 24 hours
Organism Xenopus laevis
Characteristics 24 hours after Nieuwkoop and Faber stage 52
Treatment protocol Immediately after sorting all animals into the appropriate tanks, 30μl per animal of 5mg/ml cyclopamine solution was added to all experimental tanks (to a final concentration of 1 μg/ml, and 30μl per animal of 100% ethanol was added to each control tank. Tanks were rocked gently to distribute cyclopamine and ethanol. Exposures were carried out for 24 hours and ended with fixation of treated animals.
Growth protocol Approximately 200 tadpoles from each of two clutches (designated “clutch A” and “clutch B”) of the species Xenopus laevis were obtained from Nasco Biology for a total of approximately 400 tadpoles. Animals arrived at approximately stage 45. All animals were kept in a room with an air temperature of 25ºC ± 1ºC. After one day of equilibrating to room temperature, animals were moved to an Aquatic Habitats aquatic housing unit (, Apopka, FL). Thirteen tadpoles were put into each of twenty-four tanks, without mixing clutches, for a total of 156 animals of each clutch. Each tank was filled to 9 liters with treated water. Tap water was treated and aged for at least one day with approximately 1ml Stress Coat (Aquarium Pharmaceuticals, Chalfont, PA) for every 22 liters of water. To decrease temperature-based variability in developmental rates between clutches due to slight temperature variations in the room, tanks were oriented on the rack in four rows of six tanks, with tanks along each row or column alternating between clutches. To decrease temperature-based variability in developmental rates within clutches, every three days, tanks on the top row were switched with those on the bottom row, and the middle two rows were similarly exchanged. All animals were staged each day, and animals at stage 52 (Nieuwkoop and Faber, 1994) were set aside for exposure. The population of animals at stage 52 from each clutch was divided in half indiscriminately, resulting in four groups: (1) a control group for clutch A, (2) an experimental group for clutch A, (3) a control group for clutch B, and (4) an experimental group for clutch B. These groups were then moved to new plastic exposure tanks. If a group was over twenty animals it was split among more than one exposure tank so that no tank had more than twenty animals. Each exposure tank was filled with 150ml treated water per tadpole. All exposure groups throughout the experiment had at least ten individuals, so exposure tank volumes ranged from 1,500ml (for ten individuals) to 3,000ml (for twenty individuals).
Extracted molecule total RNA
Extraction protocol Both hindlimb buds were dissected off of each animal at the base of the limb using surgical scissors. For animals from exposure tanks with over eleven individuals, limbs were divided into sub-groups of between eighteen and twenty-two limbs. This resulted in six groups of limbs per clutch for control groups and six groups of limbs per clutch for experimental groups, or a total of twenty-four groups of limbs. All limbs were placed in fresh vials of RNAlater, and returned to -20ºC for continued storage. Twenty-four total RNA preparations were extracted, in several batches of between four and six preparations each batch, using the RNeasy Mini Kit and optional RNase-Free DNase Set (QIAGEN, Valencia, CA), with the following notes. Limbs were put into 1.5ml microcentrifuge tube, residual RNAlater was pipetted off. Limbs were crushed with a homegenizer in 200μl buffer RLT, then 300μl buffer RLT was added. Elution was carried out with two washes of 50μl RNase-free water. Extracted total RNA was stored at -80ºC and transferred to the W. M. Keck Foundation Biotechnology Resource Center, Affymetrix Resource Center (Yale University, New Haven, Connecticut). All samples were again run through DNase treatment. Eight of the twenty-four RNA extractions were chosen for hybridization.
Label biotin
Label protocol Labeled according to standard Affymetrix protocols, performed by the Yale University W. M. Keck Foundation Biotechnology Resource Laboratory
Hybridization protocol Hybridized according to standard Affymetrix protocols, performed by the Yale University W. M. Keck Foundation Biotechnology Resource Laboratory
Scan protocol Scanned according to standard Affymetrix protocols, performed by the Yale University W. M. Keck Foundation Biotechnology Resource Laboratory
Description Ethanol Control 3 Normalized Expression Value (Clutch B, Group 1, P2)
Data processing Data were normalized by the Yale University W. M. Keck Foundation Biotechnology Resource Laboratory. GeneChip Operating Software was used to calculate the overall intensity of each arrray by averaging the intensity values of every probe set on the array with the exception of the top and bottom 2% of the probe set intensities. For each array, the average intensity of the array was multiplied by a scaling factor for that array to bring it to an arbitrary target intensity value common to all arrays.
Submission date Jun 26, 2007
Last update date Aug 14, 2011
Contact name Geffrey Foresman Stopper
Organization name Yale University
Department Department of Ecology & Evolutionary Biology
Street address 165 Prospect St.
City New Haven
State/province CT
ZIP/Postal code 06511
Country USA
Platform ID GPL1318
Series (1)
GSE8293 Transcriptomic Analysis of the Effects of Cyclopamine Exposure on Xenopus Limb Development

Data table header descriptions
VALUE Normalized Expression Value

Data table
AFFX-BioB-3_at 290.9
AFFX-BioB-5_at 321.8
AFFX-BioB-M_at 372.7
AFFX-BioC-3_at 961.6
AFFX-BioC-5_at 859.1
AFFX-BioDn-3_at 2901
AFFX-BioDn-5_at 2193
AFFX-CreX-3_at 16335.8
AFFX-CreX-5_at 11833.7
AFFX-DapX-3_at 4.8
AFFX-DapX-5_at 3.1
AFFX-DapX-M_at 26.6
AFFX-LysX-3_at 10.9
AFFX-LysX-5_at 1.6
AFFX-LysX-M_at 2.7
AFFX-PheX-3_at 8.6
AFFX-PheX-5_at 1.7
AFFX-PheX-M_at 2.4
AFFX-r2-Bs-dap-3_at 2.5
AFFX-r2-Bs-dap-5_at 1.4

Total number of rows: 15611

Table truncated, full table size 338 Kbytes.

Supplementary file Size Download File type/resource
GSM205792.CEL.gz 2.2 Mb (ftp)(http) CEL
Processed data included within Sample table
Processed data are available on Series record

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