GONUTS has been updated to MW1.31 Most things seem to be working but be sure to report problems.

Have any questions? Please email us at ecoliwiki@gmail.com

TableEdit

Jump to: navigation, search

PMID:9372964

You don't have sufficient rights on this wiki to edit tables. Perhaps you need to log in. Changes you make in the Table editor will not be saved back to the wiki

See Help for Help on this wiki. See the documentation for how to use the table editor

Citation

You, M, Ku, PT, Hrdlickov√°, R and Bose, HR Jr (1997) ch-IAP1, a member of the inhibitor-of-apoptosis protein family, is a mediator of the antiapoptotic activity of the v-Rel oncoprotein. Mol. Cell. Biol. 17:7328-41

Abstract

The oncoprotein v-Rel, a member of the Rel/NF-kappaB family of transcription factors, induces neoplasias and inhibits apoptosis. To identify differentially regulated cellular genes and to evaluate their relevance to transformation and apoptosis in v-Rel-transformed cells, mRNA differential display has been used. One of the recovered cDNAs corresponds to a gene that was highly expressed in v-Rel-transformed fibroblasts. Analysis of the isolated full-length cDNA of a chicken inhibitor-of-apoptosis protein (ch-IAP1) revealed that it encodes a 68-kDa protein that is highly homologous to members of the IAP family, such as human c-LAP1. Like other IAPs, ch-IAP1 contains the N-terminal baculovirus IAP repeats and C-terminal RING finger motifs. Northern blot analysis identified a 3.3-kb ch-IAP1 transcript expressed at relatively high levels in the spleen, thymus, bursa, intestine, and lungs. Expression of v-Rel in fibroblasts, a B-cell line, and spleen cells up-regulated the expression of ch-IAP1. In contrast, ch-IAP1 expression levels were low in chicken cell lines transformed by several other unrelated tumor viruses. ch-IAP1 was expressed predominantly in the cytoplasm of the v-Rel-transformed cells. ch-IAP1 suppressed mammalian cell apoptosis induced by the overexpression of the interleukin-1-converting enzyme. Expression of exogenous ch-IAP1 in temperature-sensitive v-Rel transformed spleen cells inhibited apoptosis of these cells at the nonpermissive temperature. Collectively, these results suggest that ch-IAP1 is induced during the v-Rel-mediated transformation process and functions as a suppressor of apoptosis in v-Rel-transformed cells.

Links

PubMed PMC232589

Keywords

Amino Acid Sequence; Animals; Apoptosis/genetics; Apoptosis/physiology; Base Sequence; Caspase 1; Cell Line, Transformed; Chickens; Cysteine Endopeptidases/genetics; Cysteine Endopeptidases/physiology; DNA Primers/genetics; DNA, Complementary/genetics; Gene Expression; Humans; Inhibitor of Apoptosis Proteins; Molecular Sequence Data; Oncogene Proteins v-rel; Polymerase Chain Reaction; Proteins/genetics; Proteins/physiology; RNA, Messenger/genetics; Retroviridae Proteins, Oncogenic/genetics; Retroviridae Proteins, Oncogenic/physiology; Sequence Homology, Amino Acid; Temperature; Tissue Distribution

public



Cancel