TISSUE, DEVELOPMENTAL, AND TUMOR-SPECIFIC EXPRESSION OF DIVERGENT TRANSCRIPTS IN WILMS-TUMOR

被引:160
作者
HUANG, A
CAMPBELL, CE
BONETTA, L
MCANDREWSHILL, MS
CHILTONMACNEILL, S
COPPES, MJ
LAW, DJ
FEINBERG, AP
YEGER, H
WILLIAMS, BRG
机构
[1] HOSP SICK CHILDREN,RES INST,DEPT GENET,TORONTO M5G 1X8,ONTARIO,CANADA
[2] UNIV TORONTO,DEPT MOLEC & MED GENET,TORONTO M5S 1A8,ONTARIO,CANADA
[3] HOSP SICK CHILDREN,DIV HEMATOL ONCOL,TORONTO M5G 1X8,ONTARIO,CANADA
[4] HOSP SICK CHILDREN,DEPT PATHOL,TORONTO M5G 1X8,ONTARIO,CANADA
[5] UNIV TORONTO,DEPT MICROBIOL,TORONTO M5S 1A8,ONTARIO,CANADA
[6] UNIV MICHIGAN,HOWARD HUGHES MED INST,ANN ARBOR,MI 48109
[7] UNIV MICHIGAN,DEPT INTERNAL MED,ANN ARBOR,MI 48109
[8] UNIV MICHIGAN,DEPT HUMAN GENET,ANN ARBOR,MI 48109
关键词
D O I
10.1126/science.2173145
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The Wilms tumor locus on chromosome 11p13 has been mapped to a region defined by overlapping, tumor-specific deletions. Complementary DNA clones representing transcripts of 2.5 (WIT-1) and 3.5 kb (WIT-2 mapping to this region were isolated from a kidney complementary DNA library. Expression of WIT-1 and WIT-2 was restricted to kidney and spleen. RNase protection revealed divergent transcription of WIT-1 and WIT-2, originating from a DNA region of <600 bp. Both transcripts were present at high concentrations in fetal kidney and at much reduced amounts in 5-year-old and adult kidneys. Eleven of 12 Wilms tumors classified as histopathologically heterogeneous exhibited absent or reduced expression of WIT-2, whereas only 4 of 14 histopathologically homogeneous tumors showed reduced expression. These data demonstrate a molecular basis for the pathogenetic heterogeneity in Wilms tumorigenesis.
引用
收藏
页码:991 / 994
页数:4
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