Clusterin, a Haploinsufficient Tumor Suppressor Gene in Neuroblastomas

被引:70
作者
Chayka, Olesya [1 ]
Corvetta, Daisy [1 ,2 ]
Dews, Michael [3 ]
Caccamo, Alessandro E. [2 ]
Piotrowska, Izabela [1 ]
Santilli, Giorgia [1 ]
Gibson, Sian [1 ]
Sebire, Neil J. [1 ]
Himoudi, Nourredine [1 ]
Hogarty, Michael D. [4 ]
Anderson, John [1 ]
Bettuzzi, Saverio [2 ,5 ]
Thomas-Tikhonenko, Andrei [3 ]
Sala, Arturo [1 ]
机构
[1] UCL, Mol Haematol & Canc Biol Unit, Inst Child Hlth, London WC1N 1EH, England
[2] Univ Parma, Sez Biochim Biochim Clin & Biochim Esercizio Fis, Dipartimento Med Sperimentale, I-43100 Parma, Italy
[3] Univ Penn, Dept Pathol & Lab Med, Philadelphia, PA 19104 USA
[4] Childrens Hosp Philadelphia, Div Oncol, Philadelphia, PA 19104 USA
[5] Natl Inst Biostruct & Biosyst INBB, Rome, Italy
来源
JNCI-JOURNAL OF THE NATIONAL CANCER INSTITUTE | 2009年 / 101卷 / 09期
关键词
NF-KAPPA-B; APOLIPOPROTEIN-J CLUSTERIN; INDUCED CELL-DEATH; NUCLEAR CLUSTERIN; EXPRESSION; MYC; PROGRESSION; ACTIVATION; ANTISENSE; APOPTOSIS;
D O I
10.1093/jnci/djp063
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Clusterin expression in various types of human cancers may be higher or lower than in normal tissue, and clusterin may promote or inhibit apoptosis, cell motility, and inflammation. We investigated the role of clusterin in tumor development in mouse models of neuroblastoma. We assessed expression of microRNAs in the miR-17-92 cluster by real-time reverse transcription-polymerase chain reaction in MYCN-transfected SH-SY5Y and SH-EP cells and inhibited expression by transfection with microRNA antisense oligonucleotides. Tumor development was studied in mice (n = 66) that were heterozygous or homozygous for the MYCN transgene and/or for the clusterin gene; these mice were from a cross between MYCN-transgenic mice, which develop neuroblastoma, and clusterin-knockout mice. Tumor growth and metastasis were studied in immunodeficient mice that were injected with human neuroblastoma cells that had enhanced (by clusterin transfection, four mice per group) or reduced (by clusterin short hairpin RNA [shRNA] transfection, eight mice per group) clusterin expression. All statistical tests were two-sided. Clusterin expression increased when expression of MYCN-induced miR-17-92 microRNA cluster in SH-SY5Y neuroblastoma cells was inhibited by transfection with antisense oligonucleotides compared with scrambled oligonucleotides. Statistically significantly more neuroblastoma-bearing MYCN-transgenic mice were found in groups with zero or one clusterin allele than in those with two clusterin alleles (eg, 12 tumor-bearing mice in the zero-allele group vs three in the two-allele group, n = 22 mice per group; relative risk for neuroblastoma development = 4.85, 95% confidence interval [CI] = 1.69 to 14.00; P = .005). Five weeks after injection, fewer clusterin-overexpressing LA-N-5 human neuroblastoma cells than control cells were found in mouse liver or bone marrow, but statistically significantly more clusterin shRNA-transfected HTLA230 cells (3.27%, with decreased clusterin expression) than control-transfected cells (1.53%) were found in the bone marrow (difference = 1.74%, 95% CI = 0.24% to 3.24%, P = .026). We report, to our knowledge, the first genetic evidence that clusterin is a tumor and metastasis suppressor gene.
引用
收藏
页码:663 / 677
页数:15
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