EB1 protein alteration characterizes sporadic but not ulcerative colitis associated colorectal cancer
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EB1 protein alteration characterizes sporadic but not ulcerative colitis associated colorectal cancer. / Gemoll, Timo; Kollbeck, Sophie L; Karstens, Karl F; Hò, Gia G; Hartwig, Sonja; Strohkamp, Sarah; Schillo, Katharina; Thorns, Christoph; Oberländer, Martina; Kalies, Kathrin; Lehr, Stefan; Habermann, Jens K.
In: ONCOTARGET, Vol. 8, No. 33, 15.08.2017, p. 54939-54950.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - EB1 protein alteration characterizes sporadic but not ulcerative colitis associated colorectal cancer
AU - Gemoll, Timo
AU - Kollbeck, Sophie L
AU - Karstens, Karl F
AU - Hò, Gia G
AU - Hartwig, Sonja
AU - Strohkamp, Sarah
AU - Schillo, Katharina
AU - Thorns, Christoph
AU - Oberländer, Martina
AU - Kalies, Kathrin
AU - Lehr, Stefan
AU - Habermann, Jens K
PY - 2017/8/15
Y1 - 2017/8/15
N2 - BACKGROUND: While carcinogenesis in Sporadic Colorectal Cancer (SCC) has been thoroughly studied, less is known about Ulcerative Colitis associated Colorectal Cancer (UCC). This study aimed to identify and validate differentially expressed proteins between clinical samples of SCC and UCC to elucidate new insights of UCC/SCC carcinogenesis and progression.RESULTS: Multiplex-fluorescence two-dimensional gel electrophoresis (2-D DIGE) and mass spectrometry identified 67 proteoforms representing 43 distinct proteins. After analysis by Ingenuity Pathway Analysis® (IPA), subsequent Western blot validation proofed the differential expression of Heat shock 27 kDA protein 1 (HSPB1) and Microtubule-associated protein R/EB family, member 1 (EB1) while the latter one showed also expression differences by immunohistochemistry.MATERIALS AND METHODS: Fresh frozen tissue of UCC (n = 10) matched with SCC (n = 10) was investigated. Proteins of cancerous intestinal mucosal cells were obtained by Laser Capture Microdissection (LCM) and compared by 2-D DIGE. Significant spots were identified by mass spectrometry. After IPA, three proteins [EB1, HSPB1, and Annexin 5 (ANXA5)] were chosen for further validation by Western blotting and tissue microarray-based immunohistochemistry.CONCLUSIONS: This study identified significant differences in protein expression of colorectal carcinoma cells from UCC patients compared to patients with SCC. Particularly, EB1 was validated in an independent clinical cohort.
AB - BACKGROUND: While carcinogenesis in Sporadic Colorectal Cancer (SCC) has been thoroughly studied, less is known about Ulcerative Colitis associated Colorectal Cancer (UCC). This study aimed to identify and validate differentially expressed proteins between clinical samples of SCC and UCC to elucidate new insights of UCC/SCC carcinogenesis and progression.RESULTS: Multiplex-fluorescence two-dimensional gel electrophoresis (2-D DIGE) and mass spectrometry identified 67 proteoforms representing 43 distinct proteins. After analysis by Ingenuity Pathway Analysis® (IPA), subsequent Western blot validation proofed the differential expression of Heat shock 27 kDA protein 1 (HSPB1) and Microtubule-associated protein R/EB family, member 1 (EB1) while the latter one showed also expression differences by immunohistochemistry.MATERIALS AND METHODS: Fresh frozen tissue of UCC (n = 10) matched with SCC (n = 10) was investigated. Proteins of cancerous intestinal mucosal cells were obtained by Laser Capture Microdissection (LCM) and compared by 2-D DIGE. Significant spots were identified by mass spectrometry. After IPA, three proteins [EB1, HSPB1, and Annexin 5 (ANXA5)] were chosen for further validation by Western blotting and tissue microarray-based immunohistochemistry.CONCLUSIONS: This study identified significant differences in protein expression of colorectal carcinoma cells from UCC patients compared to patients with SCC. Particularly, EB1 was validated in an independent clinical cohort.
U2 - 10.18632/oncotarget.18978
DO - 10.18632/oncotarget.18978
M3 - SCORING: Journal article
C2 - 28903393
VL - 8
SP - 54939
EP - 54950
JO - ONCOTARGET
JF - ONCOTARGET
SN - 1949-2553
IS - 33
ER -