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Allele Deletion Mapping of the Short Arm of Human Chromosome 3 in Renal Carcinoma
Authors:Bazov  I. V.  Kazubskaya  T. P.  Ermilova  V. D.  Gar'kavtseva  R. F.  Loginov  V. I.  Zabarovsky  E. R.  Braga  E. A.
Affiliation:(1) Russian State Genetics Center, Moscow, 113545, Russia;(2) Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow, 115478, Russia;(3) Microbiology and Tumor Biology Center, Karolinska Institute, Stockholm, 17177, Sweden;(4) Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991, Russia
Abstract:Allelic deletions along the short arm of human chromosome 3 were mapped in 57 pairs of DNA samples from tumor and normal tissue of renal carcinoma patients in order to locate potential tumor suppressor genes. Twenty highly polymorphic microsatellite markers were used for deletion mapping. Allelic deletions were found in most of the samples (91%). Extended terminal deletions (56%) prevailed over shorter internal and multiple deletions and dominated (65%) in the most aggressive histopathological kidney cancer subtype, clear-cell carcinoma. Frequency analysis of loss of heterozygosity allowed detection of the human chromosome 3 regions most essential for renal carcinomas: the region adjacent to the gene VHL(3p26–p25), the region of homozygous deletions AP20 (3p22–p21.33), and a new region between markers D3S2420 and D3S2409 (3p21.31, 2.2 Mbp).
Keywords:human chromosome 3  short arm  polymorphic markers  loss of heterozygosity  renal carcinoma
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