Linked Life Data

8427969

Source:http://linkedlifedata.com/resource/pubmed/id/8427969

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1993-3-10
pubmed:abstractText
Acute lymphoblastic leukemia (ALL) represents the clonal outgrowth of transformed hematopoietic progenitor cells. We have found that blast cells in some cases of B-precursor cell ALL contain Ig heavy chain gene rearrangements with considerable diversity at the junctions of the variable (VH), diversity (D), and joining (JH) regions. This diversity consists of heterogeneous nucleotide sequences at the VH-D and, less frequently, the D-JH junctions. In two cases, different VH segments were attached to the same D-JH rearrangement. In all cases studied there was a much higher than expected frequency of nucleotide sequence changes in the VH segment. At least three mechanisms may produce these changes in different cases: (1) continuing rearrangement of the heavy chain gene, in some cases by VH addition to a preexisting D-JH; (2) VH replacement; and (3) an open-and-shut mechanism. These findings suggest that an active VDJ recombinase system is present at the time of transformation in a high percentage of ALLs. An active recombinase in the rapidly growing leukemic cell population could lead to genomic instability.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0006-4971
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
81
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
775-82
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Immunoglobulin heavy chain gene VH-D junctional diversity at diagnosis in patients with acute lymphoblastic leukemia.
pubmed:affiliation
Department of Virology and Molecular Biology, St Jude Children's Research Hospital, Memphis, TN 38101.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't