Functional screening for proapoptotic genes by reverse transfection cell array technology

被引:45
作者
Mannherz, Otto [1 ]
Mertens, Daniel [1 ]
Hahn, Meinhard [1 ]
Lichter, Peter [1 ]
机构
[1] Deutsch Krebsforschungszentrum, Div Mol Genet B060, D-69120 Heidelberg, Germany
关键词
reverse transfection; cell array technology; apoptosis; caspase; nuclear morphology;
D O I
10.1016/j.ygeno.2005.12.009
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Application of mathematical algorithms to sequenced whole genomes revealed a large number of predicted genes, requiring functional assays for their characterization in a high-throughput manner. Here, we report on the development of a screening assay, which is based on reverse transfection of cellular arrays and subsequent analysis of cell morphology to identify novel proapoptotic genes. Expression plasmids containing full-length cDNAs were cotransfected with the reporter plasmid pEYFP to screen for apoptotic body formation, based on EYFP fluorescence. The assay was validated and applied to 382 human sequence-verified full-length open reading frames, most of them of unknown function. In this initial screening, proapoptotic effects could be demonstrated for 10 of these genes. For 6 of them apoptosis induction could be confirmed both by TUNEL assay and by FACS analysis of cells stained according to Nicoletti: 1 gene was not yet annotated for an apoptotic function (ST6GAL2), while 5 genes were without annotated function (FLJ20551, CXorf12, FAM105A, TMEM66, C19orf4). Our study demonstrates the potential of this method to characterize functionally genes of unknown function in a highly parallel format. (c) 2006 Elsevier Inc. All rights reserved.
引用
收藏
页码:665 / 672
页数:8
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