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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
15
pubmed:dateCreated
2005-4-7
pubmed:abstractText
Interferon (IFN)-beta induces S-phase slowing and apoptosis in human papilloma virus (HPV)-positive cervical carcinoma cell line ME-180. Here, we show that apoptosis is a consequence of the S-phase lengthening imposed by IFN-beta, demonstrating the functional correlation between S-phase alteration and apoptosis induction. In ME-180 cells, where p53 function is inhibited by HPV E6 oncoprotein, IFN-beta effects on cell cycle and apoptosis occur independently of p53. The apoptosis due to IFN-beta is mediated by the tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) in a manner dependent on the S-phase deregulation. IFN-beta appears to increase TRAIL expression both directly at the mRNA level and indirectly by augmenting surface protein levels as a consequence of the induced S-phase cell accumulation. Moreover, the alteration of the S-phase due to IFN-beta promotes TRAIL-dependent apoptosis by potentiating cell sensitivity to TRAIL, possibly through induction of a proapoptotic NF-kappaB activity and TRAIL-R2 receptor expression. Interestingly, IFN-beta-induced TRAIL-dependent apoptotic events strongly differ in the requirement of caspase activity. These results show that IFN-beta may induce an apoptotic response by deregulating cell cycle. Understanding the linkage between these mechanisms appears to be of primary importance in the search for new IFN-based therapeutic strategies to circumvent cancer disease or improve clinical outcome.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0950-9232
pubmed:author
pubmed:issnType
Print
pubmed:day
7
pubmed:volume
24
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2536-46
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:15735750-Antineoplastic Agents, pubmed-meshheading:15735750-Apoptosis, pubmed-meshheading:15735750-Apoptosis Regulatory Proteins, pubmed-meshheading:15735750-Carcinoma, pubmed-meshheading:15735750-Caspases, pubmed-meshheading:15735750-Female, pubmed-meshheading:15735750-Gene Expression Profiling, pubmed-meshheading:15735750-Genes, p53, pubmed-meshheading:15735750-Humans, pubmed-meshheading:15735750-Interferon-beta, pubmed-meshheading:15735750-Membrane Glycoproteins, pubmed-meshheading:15735750-Oligonucleotide Array Sequence Analysis, pubmed-meshheading:15735750-Papillomaviridae, pubmed-meshheading:15735750-RNA, Messenger, pubmed-meshheading:15735750-S Phase, pubmed-meshheading:15735750-TNF-Related Apoptosis-Inducing Ligand, pubmed-meshheading:15735750-Tumor Cells, Cultured, pubmed-meshheading:15735750-Tumor Necrosis Factor-alpha, pubmed-meshheading:15735750-Uterine Cervical Neoplasms
pubmed:year
2005
pubmed:articleTitle
TRAIL is a key target in S-phase slowing-dependent apoptosis induced by interferon-beta in cervical carcinoma cells.
pubmed:affiliation
Department of Infectious, Parasitic and Immune-mediated Diseases, Istituto Superiore di Sanità, Rome, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't