Surgical procedures and postsurgical tissue processing significantly affect expression of genes and EGFR-pathway proteins in colorectal cancer tissue
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Surgical procedures and postsurgical tissue processing significantly affect expression of genes and EGFR-pathway proteins in colorectal cancer tissue. / David, Kerstin A; Unger, Florian T; Uhlig, Philipp; Juhl, Hartmut; Moore, Helen M; Compton, Carolyn; Nashan, Björn; Dörner, Arnulf; de Weerth, Andreas; Zornig, Carsten.
In: ONCOTARGET, Vol. 5, No. 22, 2014, p. 11017-28.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Surgical procedures and postsurgical tissue processing significantly affect expression of genes and EGFR-pathway proteins in colorectal cancer tissue
AU - David, Kerstin A
AU - Unger, Florian T
AU - Uhlig, Philipp
AU - Juhl, Hartmut
AU - Moore, Helen M
AU - Compton, Carolyn
AU - Nashan, Björn
AU - Dörner, Arnulf
AU - de Weerth, Andreas
AU - Zornig, Carsten
PY - 2014
Y1 - 2014
N2 - An understanding of tissue data variability in relation to processing techniques during and postsurgery would be desirable when testing surgical specimens for clinical diagnostics, drug development, or identification of predictive biomarkers. Specimens of normal and colorectal cancer (CRC) tissues removed during colon and liver resection surgery were obtained at the beginning of surgery and postsurgically, tissue was fixed at 10, 20, and 45 minutes. Specimens were analyzed from 50 patients with primary CRC and 43 with intrahepatic metastasis of CRC using a whole genome gene expression array. Additionally, we focused on the epidermal growth factor receptor pathway and quantified proteins and their phosphorylation status in relation to tissue processing timepoints. Gene and protein expression data obtained from colorectal and liver specimens were influenced by tissue handling during surgery and by postsurgical processing time. To obtain reliable expression data, tissue processing for research and diagnostic purposes needs to be highly standardized.
AB - An understanding of tissue data variability in relation to processing techniques during and postsurgery would be desirable when testing surgical specimens for clinical diagnostics, drug development, or identification of predictive biomarkers. Specimens of normal and colorectal cancer (CRC) tissues removed during colon and liver resection surgery were obtained at the beginning of surgery and postsurgically, tissue was fixed at 10, 20, and 45 minutes. Specimens were analyzed from 50 patients with primary CRC and 43 with intrahepatic metastasis of CRC using a whole genome gene expression array. Additionally, we focused on the epidermal growth factor receptor pathway and quantified proteins and their phosphorylation status in relation to tissue processing timepoints. Gene and protein expression data obtained from colorectal and liver specimens were influenced by tissue handling during surgery and by postsurgical processing time. To obtain reliable expression data, tissue processing for research and diagnostic purposes needs to be highly standardized.
M3 - SCORING: Journal article
C2 - 25526028
VL - 5
SP - 11017
EP - 11028
JO - ONCOTARGET
JF - ONCOTARGET
SN - 1949-2553
IS - 22
ER -