Linked Life Data

9682242

Source:http://linkedlifedata.com/resource/pubmed/id/9682242

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1998-10-15
pubmed:abstractText
Previous research in animals supports the use of tyrosine and phenylalanine (Tyr-Phe) restriction as an adjuvant to the treatment of cancer. In this regard, dietary restriction of Tyr-Phe specifically inhibits the growth of B16BL6 melanoma tumors, dramatically suppresses spontaneous hematogenous metastasis, and modulates the sensitivity of these tumor cells to growth factors. Two chimeric toxins, HB-TGF alpha-PE4EKDEL and TGF alpha-PE4EKDEL, were examined for their toxicity against the B16BL6 melanoma cell line, and the ability of Tyr-Phe limitation to modulate the potential of these toxins was examined. Tyr-Phe limitation significantly enhanced the cytotoxic effects of HB-TGF alpha-PE4EKDEL approximately 10-fold toward B16BL6 melanoma, and free heparin diminished the cytotoxicity of HB-TGF alpha-PE4EKDEL. Although TGF alpha-PE4EKDEL is cytotoxic to this cell line, Tyr-Phe limitation did not effect the cytotoxicity of this toxin. Tyr-Phe limitation inhibited the synthesis and secretion of heparin-binding proteins but did not alter the expression of surface heparan sulfate proteoglycans. These data suggest that cell surface heparan sulfate proteoglycan is a target for binding and execution of the cytotoxicity of HB-TGF alpha-PE4EKDEL and that augmentation of cytotoxicity by Tyr-Phe limitation is due to the inhibition of heparin-binding protein production.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0163-5581
pubmed:author
pubmed:issnType
Print
pubmed:volume
31
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1-7
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Influence of tyrosine and phenylalanine limitation of cytotoxicity of chimeric TGF-alpha toxins on B16BL6 murine melanoma in vitro.
pubmed:affiliation
Department of Pharmaceutical Sciences, College of Pharmacy, Washington State University, Pullman 99164-6510, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.