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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2008-12-10
pubmed:abstractText
In order to better understand the biology of adult T cell leukemia (ATL), we aimed to establish a novel method, which allows the primary growth of ATL cells using a co-culture system with murine bone marrow-derived stromal cells, MS-5. ATL cells grew in close contact with MS-5 layers and formed so-called "cobblestone areas" (CAs) without the addition of IL-2. In clinical samples, eight of ten (80.0%) cases of acute or lymphoma type ATL cells formed CAs. The frequency of CA forming cells in ATL cells ranged from 0.03 to 1.04%. The morphology, immunophenotyping, and DNA analysis indicated that cells composing CA were compatible with ATL cells, and clonally identical to primary CD4-positive ATL cells. Furthermore, in ATL cells composing CA, the expression of p40Tax was down-regulated in transcriptional and translational level, while that of HTLV-I basic leucine zipper factor (HBZ) gene was comparable to the level of primary ATL cells, resembling expression pattern of proviral genes in in vivo ATL cells. By microarray analysis, several genes which coded products involved in cell-cell interaction, and cellular survival and proliferation, were differentially expressed in ATL cells composing CA compared with primary samples. In conclusion, our co-culture system allows for the first time the growth of primary ATL cells in vitro, and might be useful as an in vitro assay for biological and clinical studies to develop molecular targeting drugs against ATL.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1865-3774
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
88
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
551-64
pubmed:meshHeading
pubmed-meshheading:19043810-Acute Disease, pubmed-meshheading:19043810-Animals, pubmed-meshheading:19043810-Cell Adhesion, pubmed-meshheading:19043810-Cell Line, pubmed-meshheading:19043810-Cell Proliferation, pubmed-meshheading:19043810-Cell Survival, pubmed-meshheading:19043810-Coculture Techniques, pubmed-meshheading:19043810-Down-Regulation, pubmed-meshheading:19043810-Gene Expression Profiling, pubmed-meshheading:19043810-Gene Expression Regulation, Leukemic, pubmed-meshheading:19043810-Gene Products, tax, pubmed-meshheading:19043810-Human T-lymphotropic virus 1, pubmed-meshheading:19043810-Humans, pubmed-meshheading:19043810-Interleukin-2, pubmed-meshheading:19043810-Leukemia-Lymphoma, Adult T-Cell, pubmed-meshheading:19043810-Mice, pubmed-meshheading:19043810-Models, Biological, pubmed-meshheading:19043810-Oligonucleotide Array Sequence Analysis, pubmed-meshheading:19043810-Tumor Cells, Cultured
pubmed:year
2008
pubmed:articleTitle
Adhesion-dependent growth of primary adult T cell leukemia cells with down-regulation of HTLV-I p40Tax protein: a novel in vitro model of the growth of acute ATL cells.
pubmed:affiliation
Transfusion Service, Nagasaki University Hospital of Medicine and Dentistry, Nagasaki, Japan. agwkn@nagasaki-u.ac.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't