Drug-Induced Premature Chromosome Condensation (PCC) Protocols: Cytogenetic Approaches in Mitotic Chromosome and Interphase Chromatin

2009 ◽  
pp. 83-92 ◽  
Author(s):  
Eisuke Gotoh
Keyword(s):  
Mitotic Chromosome ◽  
Chromosome Condensation ◽  
Interphase Chromatin ◽  
Premature Chromosome Condensation ◽  
Drug Induced

scholarly journals Integration of biological data by kernels on graph nodes allows prediction of new genes involved in mitotic chromosome condensation

2014 ◽  
Vol 25 (16) ◽  
pp. 2522-2536 ◽  
Author(s):  
Jean-Karim Hériché ◽  
Jon G. Lees ◽  
Ian Morilla ◽  
Thomas Walter ◽  
Boryana Petrova ◽  
...  
Keyword(s):  
Experimental Validation ◽  
Mitotic Chromosome ◽  
Chromosome Condensation ◽  
Biological Data ◽  
Cell Functions ◽  
Functional Relationships ◽  
New Genes ◽  
Public Data ◽  
Mitotic Chromosome Condensation ◽  
Graph Nodes

The advent of genome-wide RNA interference (RNAi)–based screens puts us in the position to identify genes for all functions human cells carry out. However, for many functions, assay complexity and cost make genome-scale knockdown experiments impossible. Methods to predict genes required for cell functions are therefore needed to focus RNAi screens from the whole genome on the most likely candidates. Although different bioinformatics tools for gene function prediction exist, they lack experimental validation and are therefore rarely used by experimentalists. To address this, we developed an effective computational gene selection strategy that represents public data about genes as graphs and then analyzes these graphs using kernels on graph nodes to predict functional relationships. To demonstrate its performance, we predicted human genes required for a poorly understood cellular function—mitotic chromosome condensation—and experimentally validated the top 100 candidates with a focused RNAi screen by automated microscopy. Quantitative analysis of the images demonstrated that the candidates were indeed strongly enriched in condensation genes, including the discovery of several new factors. By combining bioinformatics prediction with experimental validation, our study shows that kernels on graph nodes are powerful tools to integrate public biological data and predict genes involved in cellular functions of interest.

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