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Rearrangement of the transcription factor gene CHOP in myxoid liposarcomas with t(12;16)(q13;p11)

Åman, Pierre; Ron, David; Mandahl, Nils LU ; Fioretos, Thoas LU ; Heim, Sverre; Arheden, Kristina; Willen, Helena; Rydholm, Anders LU and Mitelman, Felix LU (1992) In Genes, Chromosomes and Cancer 5(4). p.278-285
Abstract
Most myxoid liposarcomas (MLS) are characterized cytogenetically by a t(12;16)(q13;p11). It is reasonable to assume that this translocation corresponds to the consistent rearrangement of one or two genes in 12q13 and/or 16p11, and that the loci thus affected are important in the normal control of fat cell differentiation and proliferation. We have used Southern blot technique to test whether a gene of the CCAAT/enhancer binding protein (C/EBP) family, CHOP, which maps to 12q13 and is assumed to be involved in adipocyte differentiation, could be the 12q gene in question. Using a cDNA probe that spans the CHOP coding region, we detected one rearranged and one wild type allele in nine of nine MLS with t(12;16). Using PCR generated,... (More)
Most myxoid liposarcomas (MLS) are characterized cytogenetically by a t(12;16)(q13;p11). It is reasonable to assume that this translocation corresponds to the consistent rearrangement of one or two genes in 12q13 and/or 16p11, and that the loci thus affected are important in the normal control of fat cell differentiation and proliferation. We have used Southern blot technique to test whether a gene of the CCAAT/enhancer binding protein (C/EBP) family, CHOP, which maps to 12q13 and is assumed to be involved in adipocyte differentiation, could be the 12q gene in question. Using a cDNA probe that spans the CHOP coding region, we detected one rearranged and one wild type allele in nine of nine MLS with t(12;16). Using PCR generated, site-specific probes corresponding to the non-coding exons 1 and 2 and intron 2 of CHOP, rearrangements in five of seven tumors mapped to the 2.4 and 1.6 kbp PstI fragments that contain the first two exons and introns of the gene and the upstream promoter region. In contrast to the findings in MLS, no tumor without a t(12;16) exhibited aberrant CHOP restriction digest patterns. These tumors included one highly differentiated liposarcoma with abnormal karyotype but no involvement of 12q13, seven lipomas with various cytogenetic aberrations of 12q13-15, two uterine leiomyomas with t(12;14) (q14-15;q23-24), and one hemangiopericytoma and one chondroma, both of which also had 12q13 changes.(ABSTRACT TRUNCATED AT 250 WORDS) (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Genes, Chromosomes and Cancer
volume
5
issue
4
pages
278 - 285
publisher
John Wiley & Sons
external identifiers
  • pmid:1283316
  • scopus:0026621537
ISSN
1045-2257
DOI
10.1002/gcc.2870050403
language
English
LU publication?
yes
id
938ce532-0fa9-4506-8e38-d311e85a5a1b (old id 1106930)
date added to LUP
2008-07-30 11:27:35
date last changed
2017-05-28 03:31:49
@article{938ce532-0fa9-4506-8e38-d311e85a5a1b,
  abstract     = {Most myxoid liposarcomas (MLS) are characterized cytogenetically by a t(12;16)(q13;p11). It is reasonable to assume that this translocation corresponds to the consistent rearrangement of one or two genes in 12q13 and/or 16p11, and that the loci thus affected are important in the normal control of fat cell differentiation and proliferation. We have used Southern blot technique to test whether a gene of the CCAAT/enhancer binding protein (C/EBP) family, CHOP, which maps to 12q13 and is assumed to be involved in adipocyte differentiation, could be the 12q gene in question. Using a cDNA probe that spans the CHOP coding region, we detected one rearranged and one wild type allele in nine of nine MLS with t(12;16). Using PCR generated, site-specific probes corresponding to the non-coding exons 1 and 2 and intron 2 of CHOP, rearrangements in five of seven tumors mapped to the 2.4 and 1.6 kbp PstI fragments that contain the first two exons and introns of the gene and the upstream promoter region. In contrast to the findings in MLS, no tumor without a t(12;16) exhibited aberrant CHOP restriction digest patterns. These tumors included one highly differentiated liposarcoma with abnormal karyotype but no involvement of 12q13, seven lipomas with various cytogenetic aberrations of 12q13-15, two uterine leiomyomas with t(12;14) (q14-15;q23-24), and one hemangiopericytoma and one chondroma, both of which also had 12q13 changes.(ABSTRACT TRUNCATED AT 250 WORDS)},
  author       = {Åman, Pierre and Ron, David and Mandahl, Nils and Fioretos, Thoas and Heim, Sverre and Arheden, Kristina and Willen, Helena and Rydholm, Anders and Mitelman, Felix},
  issn         = {1045-2257},
  language     = {eng},
  number       = {4},
  pages        = {278--285},
  publisher    = {John Wiley & Sons},
  series       = {Genes, Chromosomes and Cancer},
  title        = {Rearrangement of the transcription factor gene CHOP in myxoid liposarcomas with t(12;16)(q13;p11)},
  url          = {http://dx.doi.org/10.1002/gcc.2870050403},
  volume       = {5},
  year         = {1992},
}