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Chromosomal Imbalances in the Colorectal Carcinomas with Microsatellite Instability

 Long Shan Li  ;  Nam-Gyun Kim  ;  Hoguen Kim  ;  Nam Kyu Kim  ;  Won Ho Kim  ;  Soo Nyung Kim  ;  Kwi Hye Koh  ;  Hyun Ju Kang  ;  Hyunki Kim  ;  Chanil Park  ;  Se Hoon Kim 
 AMERICAN JOURNAL OF PATHOLOGY, Vol.163(4) : 1429-1436, 2003 
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Recent molecular genetic studies have revealed that two major types of genomic instabilities, chromosomal instability and microsatellite instability, exist in the colorectal carcinomas. To clarify the relationship between chromosomal abnormalities and mismatch repair gene defects in colorectal carcinomas, we performed a chromosomal analysis on 39 colorectal carcinomas with high-microsatellite instability (MSI-H) and compared the results obtained with those of 20 right-sided microsatellite-stable (MSS) colorectal carcinomas. Chromosomal imbalances (CIs) in MSS colorectal carcinomas were more frequent than in MSI-H colon carcinomas by comparative genomic hybridization analysis (70% versus 31%, P = 0.004). The CI patterns of MSI-H and MSS carcinomas were different. Frequent CIs in MSI-H colon carcinomas were gains of 4q (15%) and 8q (8%), and losses of 9q (21%), 1p (18%), and 11q (18%). In contrast, frequent CIs in right-sided MSS colon carcinomas were gains of 8q (50%), 13q (35%), and 20q (25%), and losses of 18q (55%), 15q (35%), and 17p (30%). We compared the mutation status of 45 target genes and CIs in our MSI-H tumors. Among these 45 target genes, mutation of hRAD50, a member of the DNA repair genes, and FLJ11383 were significantly related to MSI-H colorectal carcinomas with CIs (P = 0.01 and P = 0.02, respectively). Our findings indicate that unique CIs were present in a subset of MSI-H colorectal carcinomas and that these CIs are related to the mutation of several target genes, especially of hRAD50.
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1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Pathology (병리학교실) > 1. Journal Papers
Yonsei Authors
Kang, Hyun Ju(강현주)
Koh, Kwi Hye(고귀혜)
Kim, Nam Kyu(김남규) ORCID logo https://orcid.org/0000-0003-0639-5632
Kim, Nam Gyun(김남균)
Kim, Se Hoon(김세훈) ORCID logo https://orcid.org/0000-0001-7516-7372
Kim, Won Ho(김원호) ORCID logo https://orcid.org/0000-0002-5682-9972
Kim, Hyunki(김현기) ORCID logo https://orcid.org/0000-0003-2292-5584
Kim, Ho Keun(김호근)
Park, Chan Il(박찬일)
Li, Long Shan(이용산)
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