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Titolo:
TIMP-3 INDUCES CELL-DEATH BY STABILIZING TNF-ALPHA RECEPTORS ON THE SURFACE OF HUMAN COLON-CARCINOMA CELLS
Autore:
SMITH MR; KUNG HF; DURUM SK; COLBURN NH; SUN Y;
Indirizzi:
NCI,FREDERICK CANC RES & DEV CTR,INTRAMURAL RES SUPPORT PROGRAM,SAIC FREDERICK FREDERICK MD 21702 NCI,FREDERICK CANC RES & DEV CTR,LAB BIOCHEM PHYSIOL,DIV BASIC SCI FREDERICK MD 21702 NCI,FREDERICK CANC RES & DEV CTR,MOL IMMUNOREGULAT LAB,DIV BASIC SCI FREDERICK MD 21702 NCI,FREDERICK CANC RES & DEV CTR,CELL BIOL SECT,LAB BIOCHEM PHYSIOL,DIV BASIC SCI FREDERICK MD 21702 PARKE DAVIS PHARMACEUT RES,DIV MOL BIOL ANN ARBOR MI 48105
Titolo Testata:
Cytokine
fascicolo: 10, volume: 9, anno: 1997,
pagine: 770 - 780
SICI:
1043-4666(1997)9:10<770:TICBST>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
TUMOR-NECROSIS-FACTOR; HUMAN TISSUE INHIBITOR; METALLOPROTEINASES (TIMP)-3; MOLECULAR-CLONING; SOLUBLE FORM; GENE FAMILY; EXPRESSION; MEMBER; LYMPHOCYTES; ACTIVATION;
Keywords:
CELL DEATH; APOPTOSIS; MATRIX METALLOPROTEINASES; TISSUE INHIBITOR OF METALLOPROTEINASES; TNF-ALPHA; TNF-ALPHA RECEPTORS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
M.R. Smith et al., "TIMP-3 INDUCES CELL-DEATH BY STABILIZING TNF-ALPHA RECEPTORS ON THE SURFACE OF HUMAN COLON-CARCINOMA CELLS", Cytokine, 9(10), 1997, pp. 770-780

Abstract

Matrix metalloproteinases (MMPs) and tissue inhibitor of metalloproteinases (TIMPs) regulate the structural integrity of the extracellular matrix (ECM). Constitutive expression of human TIMP3 in human DLD colon carcinoma cells renewed serum-responses and inhibited tumour formation in nude mice, To elucidate the mechanism of TIMP-3-mediated tumour suppression, we compared parental DLD and TIMP-3 expressing DLD cells (TIMP-3/DLD), finding them to be significantly different, TIMP-3/DLD cultures have fewer mitotic cells, are delayed in G(1), and die after serum starvation, TIMP-3/DLD conditioned media activates cell death on fibroblast cells, The cell death induced by serum starvation and conditioned media was inhibited by 70%, in the presence of neutralizing tumour necrosis factor alpha (TNF-alpha) antibody, TIMP-3/DLD whole cell lysate contained p55 TNF-alpha receptor, while vector/DLD lysate had p55 TNF-alpha receptor and p46 soluble TNF-alpha inhibitor, Vector/DLD conditioned media had p46, while no soluble TNF-alpha receptor,vas detected in TIMP-3/DLD conditioned media, In addition, FAGS analysis revealed that TIMP-3/DLD cells have more TNF-alpha surface binding sites, suggesting a direct correlation between TIMP-3 expression and surface receptors, The mechanism of tumorigenic reversion induced by TIMP-3 inDLD cells may involve protection of receptors from the proteolytic activity of MMPs. Putative TIMP-3-mediated inhibition of MMPs restores the TNF-alpha p55 signalling pathway and the carcinoma cell is killed by autocrine TNF-alpha, Thus, DLD cells have specific ECM MMPs that cleave cytokines and cytokine receptors, TIMP-3 specifically inhibits MMPs involved in receptor shedding. (C) 1997 Academic Press Limited.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/01/20 alle ore 19:09:00