Molecular Biological Characteristics of Differentiated Early Gastric Cancer on the Basis of Mucin Expression.

Nari Shin; Hye Yeon Kim; Woo Kyung Kim; Min Gyung Park; Kyung Bin Kim; Dong Hoon Shin; Kyung Un Choi; Jee Yeon Kim; Chang Hun Lee; Gi Young Huh; Mee Young Sol; Do Youn Park

doi:10.4132/KoreanJPathol.2011.45.1.69

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Original Article Molecular Biological Characteristics of Differentiated Early Gastric Cancer on the Basis of Mucin Expression.: Nari Shin, Hye Yeon Kim, Woo Kyung Kim, Min Gyung Park, Kyung Bin Kim, Dong Hoon Shin, Kyung Un Choi, Jee Yeon Kim, Chang Hun Lee, Gi Young Huh, Mee Young Sol, Do Youn Park; Journal of Pathology and Translational Medicine 2011;45(1):69-78
DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.1.69

¹Department of Pathology, Medical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea. pdy220@pusan.ac.kr
²Department of Forensic Medicine, Medical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea.

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Abstract

BACKGROUND
It is clear that the biologic characteristics of gastric cancer are different on the basis of mucin phenotypes. However, there are unabated controversies on the exact biologic differences of mucin expression in gastric cancer.
METHODS
We analyzed various protein expressions and microsatellite instability (MSI) status based on mucin expression in 130 differentiated early gastric adenocarcinoma cases. Furthermore, we evaluated the genomic alternation in 10 selected differentiated early gastric adenocarcinoma cases using array based comparative genomic hybridization (aCGH).
RESULTS
Intestinal mucin predominant subtype showed significantly elevated p53 protein and caudal-related homeobox 2 expression, and delocalization of beta catenin expressions compared to the gastric mucin predominant subtype. On MSI status, the gastric mucin predominant subtype more frequently showed unstable status than the intestinal mucin predominant subtype. CGH study showed more frequent chromosomal gain and loss in the intestinal mucin predominant subtype than the gastric mucin predominant subtype, albeit without statistical significance. Interestingly, there were significant differences in chromosomal alternation between four mucin phenotypes.
CONCLUSIONS
Study results suggest possible different points of biologic behaviors in early differentiated gastric adenocarcinomas by mucin expression type.

Keywords: Stomach neoplasms;Tumor suppressor protein p53;beta catenin;Microsatellite instability;Comparative genomic hybridization;Mucins

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Mucin Expression in Gastric Cancer: Reappraisal of Its Clinicopathologic and Prognostic Significance
Dae Hwan Kim, Nari Shin, Gwang Ha Kim, Geum Am Song, Tae-Yong Jeon, Dong-Heon Kim, Gregory Y. Lauwers, Do Youn Park
Archives of Pathology & Laboratory Medicine.2013; 137(8): 1047. CrossRef
Microsatellite Instability Status in Gastric Cancer: A Reappraisal of Its Clinical Significance and Relationship with Mucin Phenotypes
Joo-Yeun Kim, Na Ri Shin, Ahrong Kim, Hyun-Jeong Lee, Won-young Park, Jee-Yeon Kim, Chang-Hun Lee, Gi-Young Huh, Do Youn Park
Korean Journal of Pathology.2013; 47(1): 28. CrossRef

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