Zhang JP, Li H, Li XM, Jiang XF, Li Y, Zhang QZ, Chen Y, Wang HJ, Pang ZL, Shen HM, Li HW. Expression of HspB1 in esophageal cancer in Xinjiang Kazakh patients.
Shijie Huaren Xiaohua Zazhi 2012;
20:1296-1300. [DOI:
10.11569/wcjd.v20.i15.1296]
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Abstract
AIM: To obtain differentially expressed proteins in esophageal cancer in Xinjiang Kazakh patients by using a comparative proteomic method to provide clues to early diagnosis and therapy of this malignancy.
METHODS: Two-dimensional gel electrophoresis (2-DE) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) were utilized for the identification of proteins differentially expressed between cancer and adjacent non-cancerous tissue. The differential expression of HspB1 was further verified by RT-PCR.
RESULTS: Overexpression of HspB1 protein was noted in esophageal cancer; however, its mRNA expression showed no significant difference between cancer tissue and normal tissue (2.18 ± 3.98 vs 3.06 ± 4.69, P > 0.05). HspB1 mRNA expression had no correlation with depth of invasion, clinical stage, or degree of differentiation (all P > 0.05). The percentage of samples showing higher HspB1 expression in esophageal cancer than in normal tissue, in patients with T3 to T4 cancer than in those with T1 to T2 cancer, and in those with high-differentiation cancer than in those with low-differentiation cancer.
CONCLUSION: Our finding suggests that HspB1 expression may be regulated by several different mechanisms during the infiltration and differentiation of esophageal cancer.
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