Linked Life Data

1886719

Source:http://linkedlifedata.com/resource/pubmed/id/1886719

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8
pubmed:dateCreated
1991-10-4
pubmed:databankReference
pubmed:abstractText
Analysis of several cases of t(1:14)(p32;q11) translocation present in 3% of T-cell acute leukemias (T-ALL) has revealed the tal-1 gene. This gene encodes a helix-loop-helix protein. It has been found to be expressed in normal bone marrow and in leukemic T-cell and erythroleukemia cell lines, but not in normal T cells. Recently, a site-specific deletion, tald, renamed tald1 in this paper, has been detected in a high proportion of pediatric T-ALL, which arose by a site-specific DNA recombination between tal-1 and a new locus termed SIL. In this study we searched for structural rearrangements within tal-1 in a panel of 134 non-selected leukemic patients (including 66 with T-ALL). Only 6% of patients with T-ALL harbored the tald1 deletion. A second specific deletion termed tald2 was observed in another 6% of T-ALL patients; it involves another site within tal-1 plus the same site as tald1 in the SIL locus. Similarly to tald1 deletion, tald2 junctions harbor structural characteristics that are reminiscent of aberrant recombinase activity. Moreover, we report a detailed analysis of the tal-1 gene structure. Transcription analysis and in vitro translation data are consistent with the differential expression of several TAL-1 protein species containing the HLH motif but differing in their amino terminus. Taken together, our data indicate that t(1;14) translocations and both tald deletions disrupt the 5' part of the tal-1 gene, placing its entire coding sequences under the control of the regulatory elements of the TCR-delta gene or the SIL gene, both of which are normally expressed in T-cell lineage.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0950-9232
pubmed:author
pubmed:issnType
Print
pubmed:volume
6
pubmed:geneSymbol
SIL, tal-1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1477-88
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed-meshheading:1886719-Amino Acid Sequence, pubmed-meshheading:1886719-Base Sequence, pubmed-meshheading:1886719-Bone Marrow, pubmed-meshheading:1886719-Chromosome Deletion, pubmed-meshheading:1886719-Chromosomes, Human, Pair 1, pubmed-meshheading:1886719-Chromosomes, Human, Pair 14, pubmed-meshheading:1886719-DNA, Neoplasm, pubmed-meshheading:1886719-Genes, Regulator, pubmed-meshheading:1886719-Humans, pubmed-meshheading:1886719-Leukemia-Lymphoma, Adult T-Cell, pubmed-meshheading:1886719-Molecular Sequence Data, pubmed-meshheading:1886719-Molecular Structure, pubmed-meshheading:1886719-Promoter Regions, Genetic, pubmed-meshheading:1886719-Protein Biosynthesis, pubmed-meshheading:1886719-Receptors, Antigen, T-Cell, pubmed-meshheading:1886719-Transcription, Genetic, pubmed-meshheading:1886719-Translocation, Genetic, pubmed-meshheading:1886719-Tumor Cells, Cultured
pubmed:year
1991
pubmed:articleTitle
Two site-specific deletions and t(1;14) translocation restricted to human T-cell acute leukemias disrupt the 5' part of the tal-1 gene.
pubmed:affiliation
INSERM U301, Institut de Génétique Moléculaire, Paris, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't