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Expression Pattern of Tumor Progression and Metastasis-related Gene Proteins - CD44H, CD44v6, erbB-2, and p53 -in Gastric Carcinoma.
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Original Article Expression Pattern of Tumor Progression and Metastasis-related Gene Proteins - CD44H, CD44v6, erbB-2, and p53 -in Gastric Carcinoma.
Sung Woo Joo, Young Jhoon Chin, Dae Cheol Kim, Gi Yeoung Huh, Sook Hee Hong
Journal of Pathology and Translational Medicine 1996;30(9):751-763
DOI: https://doi.org/
Department of Anesthesiology and Pathology, Dong-A University Medical Collage, Pusan, Korea.
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Immunohistochemical studies of the molecules associated with gastric tumor progression and metastasis were done to evaluate their relationship with known prognostic factors and their usefulness in assessment of the progression of gastric carcinoma in 127 gastric carcinoma tissues. The 4 antibodies used in this study were CD44H, CD44v6, erbB-2, and p53. The CD44H expression was detected in 76 (59.8%), CD44v6 in 63 (49.6%), erbB-2 in 18 (14.2%), and mutant p53 in 98 (77.2%) out of 127 cases of gastric carcinomas. There was no significant correlation between the expression rates of each four proteins. The expression rates of all 4 proteins were not significantly correlated with age and sex of the patients and lymph node metastasis, but the correlation between CD44v6 expression and the depth of tumor invasion and tumor stage was significant (p<0.05). These results suggest that CD44v6 is closely associated with tumor invasion, and high levels of CD44H, erbB-2 and p53 are associated with tumorigenesis of the stomach as they are highly expressed in early as well as in advanced gastric carcinomas. The findings also support the conclusion that the loss of control of alternative CD44 mRNA splicing resulted in production of CD44v6 splicing variant in tumor cell facilitates tissue invasion by increased adherence of the tumor cell to an extracellular matrix or by tumor cell migration. It can be expected that CD44v6 overexpression in tumor cells appears to be an important prognostic indicator for gastric tumor progression.

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