title: Chromosome 22 complements apoptosis in Fas-and TNF-resistant mutant UK110 cells.
abstract: Fas and p55 tumor necrosis factor receptor (TNFR) transfer an apoptosis signal when they are crosstinked with their ligands or agonistic antibodies. However, the signal transduction mechanism of apoptosis via Fas and p55 TNFR has not yet been elucidated. We previously described a recessive mutant UK110 from the human monocytic leukemia U937 cell line, that showed resistance against Fas- and p55 TNFR-mediated apoptosis. By cytogenetic analysis and microcell-fusion method, we demonstrate here that introduction of chromosome 22 can specifically restore the sensitivity to Fas- and TNF-mediated apoptosis in UK110 cells. Moreover, introduction of chromosome 22 into UK110 can complement the processing of interleukin-1 beta converting enzyme (ICE)-like proteases, such as CPP32/Yama/Apopain and ICH-1L, after treatment with anti-Fas and anti-p55 TNFR antibodies. These results suggest that the product of a gene located on chromosome 22 participates in the Fas-and p55 TNFR-mediated apoptosis at a point upstream of ICE-like proteases.
authors.affiliation: Laboratory of Biomedical Research, Institute of Molecular and Cellular Biosciences, University of Tokyo.
authors.forename: K
authors.initials: K
authors.lastname: Noguchi
authors.forename: M
authors.initials: M
authors.lastname: Naito
authors.forename: M
authors.initials: M
authors.lastname: Oshimura
authors.forename: T
authors.initials: T
authors.lastname: Mashima
authors.forename: N
authors.initials: N
authors.lastname: Fujita
authors.forename: S
authors.initials: S
authors.lastname: Yonehara
authors.forename: T
authors.initials: T
authors.lastname: Tsuruo
mesh_terms: D000595:Amino Acid Sequence; D015703:Antigens, CD / Q000502:physiology*; D017209:Apoptosis / Q000235:genetics*; D020170:Caspase 1; D002459:Cell Fusion; D002892:Chromosomes, Human, Pair 22 / Q000235:genetics*; D003513:Cycloheximide / Q000494:pharmacology; D003546:Cysteine Endopeptidases / Q000378:metabolism; D004351:Drug Resistance / Q000235:genetics; D005808:Genes, Recessive; D005816:Genetic Complementation Test; D006801:Humans; D007948:Leukemia, Monocytic, Acute / Q000473:pathology; D016403:Lymphoma, Large B-Cell, Diffuse / Q000473:pathology; D008969:Molecular Sequence Data; D009363:Neoplasm Proteins / Q000378:metabolism; D011499:Protein Processing, Post-Translational; D018124:Receptors, Tumor Necrosis Factor / Q000502:physiology*; D047888:Receptors, Tumor Necrosis Factor, Type I; D015398:Signal Transduction / Q000187:drug effects / Q000235:genetics; D014407:Tumor Cells, Cultured; D014409:Tumor Necrosis Factor-alpha / Q000494:pharmacology*; D019014:fas Receptor / Q000502:physiology*
chemical_list: D015703:Antigens, CD; D009363:Neoplasm Proteins; D018124:Receptors, Tumor Necrosis Factor; D047888:Receptors, Tumor Necrosis Factor, Type I; D014409:Tumor Necrosis Factor-alpha; D019014:fas Receptor; D003513:Cycloheximide; D003546:Cysteine Endopeptidases; D020170:Caspase 1