Linked Life Data

16157375

Source:http://linkedlifedata.com/resource/pubmed/id/16157375

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2006-1-10
pubmed:abstractText
Activation of the activator protein 1 (AP-1) plays a critical role in oncogenesis by human T-cell leukemia virus type 1 (HTLV-1), the etiologic agent of adult T-cell leukemia (ATL), and is required for maintenance of the malignant phenotype. Curcumin (diferuloylmethane), the major pigment of the spice turmeric, has anti-tumor activity; however, the effect of curcumin against ATL has not been elucidated. In this study, we examined the effects of curcumin on AP-1 activity in HTLV-1-infected T-cell lines. Curcumin suppressed the constitutive AP-1 DNA-binding and transcriptional activity in HTLV-1-infected T-cell line. Curcumin also inhibited HTLV-1 Tax-induced AP-1 transcriptional activity. JunD was detectable as a major component of the AP-1-DNA complex in HTLV-1-infected T-cell lines using the supershift assay. The expression of JunD was suppressed by curcumin treatment. Curcumin inhibited the growth of HTLV-1-infected T-cell lines by inducing cell cycle arrest followed by apoptosis. Our results suggest that suppression of the constitutively active AP-1 by curcumin is due to, at least in-part, reducing the expression of JunD by curcumin. Inhibition of AP-1 activity by curcumin may be one of the mechanisms responsible for the anti-ATL effect of curcumin. We propose that curcumin is a potentially promising compound for the treatment of ATL.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0145-2126
pubmed:author
pubmed:issnType
Print
pubmed:volume
30
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
313-21
pubmed:dateRevised
2011-9-6
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Curcumin suppresses constitutive activation of AP-1 by downregulation of JunD protein in HTLV-1-infected T-cell lines.
pubmed:affiliation
Division of Molecular Virology and Oncology, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa 903-0215, Japan.
pubmed:publicationType
Journal Article, Retracted Publication, Research Support, Non-U.S. Gov't