Genome-wide allelotype study of primary glioblastoma multiforme

作     者：胡杰 江澄川 吴浩强 彭颂先 唐婉君 陈商群 

作者机构：Department of NeurosurgeryHuashan HospitalFudan University Department of Anatomical and Cellular PathologyThe Chinese University of Hong Kong 

出 版 物：《Chinese Medical Journal》 (中华医学杂志（英文版）)

年 卷 期：2003年第116卷第4期

页      面：577-583页

核心收录：

学科分类：1001[医学-基础医学(可授医学、理学学位)] 10[医学] 

主　　题：glioblastoma · loss of heterozygosity · genes · tumor suppressor 

摘      要：To investigate the molecular genetic pathogenesis of primary glioblastoma multiforme (GBM) and identify which chromosomes or chromosomal regions of the entire genome may harbor tumor suppressor genes (TSGs) associated with GBM Methods A high-resolution allelotype study of 21 cases of primary GBM was performed by PCR-based loss of heterozygosity (LOH)analysis Three hundred and eighty-two fluorescent dye-labeled microsatellite markers covering all 22 autosomes were applied The mean genetic distance between two flanking markers was about 10 cM Results LOH was observed on all 39 nonacrocentric autosomal arms examined in this study The LOH frequencies of 10q, 10p, 9p, 17p and 13q were the highest (50%) Furthermore, high LOH frequencies were detected in the regions containing known TSGs including PTEN, DMBT1, p16, p15, p53 and RB; the LOH frequencies on 14q, 3q, 22q, 11p, 9q, 19q were also high (40 5%) Our study observed the following commonly deleted regions: 9p22-23, 10p12 2-14, 10q21 3, 13q12 1-14 1, 13q14 3-31, 17p11 2-12, 17p13, 3q25 2-26 2, 11p12-13, 14q13-31, 14q32 1, 14q11 1-13, 22q13 3, 4q35, 4q31 1-31 2, 6q27 and 6q21-23 3 Conclusions The molecular pathogenesis of GBM is very complicated and associated with a variety of genetic abnormalities on many chromosomal arms The most closely related chromosomal arms to the pathogenesis of GBM are 10q, 10p, 9p, 17p and 13q Besides the well-known TSGs including PTEN, DMBT1, p16, p15, p53 and RB, multiple unknown TSGs associated with GBM may be present on the commonly deleted regions detected in the present study