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Study for evaluating the effect of cold ischemic time and RNA stabilization method on RNA integrity and gene expression measurements


ABSTRACT: Time series of eleven breast cancer samples subjected to different cold ischemic stress of up to 3 hr post tumor excision. A different 2x2 factorial within this study evaluated the effect of stabilization method (RNAlater vs snap freezing) and stablization delay (0 and 40 min) at room temperature. Tissue samples were collected at surgery, cut into 1-2 mm pieces and divided into 8 portions. Portions were put in RNAlater or fresh frozen at baseline, 20, 40, 60, 120, and 180 minutes thereafter, or snap frozen in dry ice in a pre-chilled sample vial at baseline and 40 minutes thereafter.

ORGANISM(S): Homo sapiens

SUBMITTER: Christos Hatzis 

PROVIDER: E-GEOD-25011 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Effects of tissue handling on RNA integrity and microarray measurements from resected breast cancers.

Hatzis Christos C   Sun Hongxia H   Yao Hui H   Hubbard Rebekah E RE   Meric-Bernstam Funda F   Babiera Gildy V GV   Wu Yun Y   Pusztai Lajos L   Symmans W Fraser WF  

Journal of the National Cancer Institute 20111027 24


<h4>Background</h4>Reliable stability and yield of RNA from breast cancer tissues are important for biobanking, clinical trials, and diagnostic testing.<h4>Methods</h4>Aliquots of fresh primary tumor tissue from 17 surgically resected invasive breast cancers were placed into RNAlater at room temperature after tumor removal (baseline) and up to 3 hours thereafter or were snap frozen at baseline and 40 minutes thereafter. Samples were stored at -80°C until gene expression profiling with Affymetrix  ...[more]

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