Graph theoretical approach to study eQTL: a case study of Plasmodium falciparum.
Graph theoretical approach to study eQTL: a case study of Plasmodium falciparum.
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DOI:
10.1093/bioinformatics/btp189
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发表时间:
2009-06-15
期刊:
影响因子:
--
通讯作者:
Przytycka TM
中科院分区:
文献类型:
--
作者:
Huang Y;Wuchty S;Ferdig MT;Przytycka TM
Motivation: Analysis of expression quantitative trait loci (eQTL) significantly contributes to the determination of gene regulation programs. However, the discovery and analysis of associations of gene expression levels and their underlying sequence polymorphisms continue to pose many challenges. Methods are limited in their ability to illuminate the full structure of the eQTL data. Most rely on an exhaustive, genome scale search that considers all possible locus–gene pairs and tests the linkage between each locus and gene. Result: To analyze eQTLs in a more comprehensive and efficient way, we developed the Graph based eQTL Decomposition method (GeD) that allows us to model genotype and expression data using an eQTL association graph. Through graph-based heuristics, GeD identifies dense subgraphs in the eQTL association graph. By identifying eQTL association cliques that expose the hidden structure of genotype and expression data, GeD effectively filters out most locus–gene pairs that are unlikely to have significant linkage. We apply GeD on eQTL data from Plasmodium falciparum, the human malaria parasite, and show that GeD reveals the structure of the relationship between all loci and all genes on a whole genome level. Furthermore, GeD allows us to uncover additional eQTLs with lower FDR, providing an important complement to traditional eQTL analysis methods. Contact: przytyck@ncbi.nlm.nih.gov
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影响因子:
9.8
作者:
Gonzales JM;Patel JJ;Ponmee N;Jiang L;Tan A;Maher SP;Wuchty S;Rathod PK;Ferdig MT
通讯作者:
Ferdig MT
影响因子:
9.8
作者:
Storey JD;Akey JM;Kruglyak L
通讯作者:
Kruglyak L
影响因子:
30.8
作者:
Bystrykh, L;Weersing, E;de Haan, G
通讯作者:
de Haan, G
影响因子:
30.8
作者:
Chesler, EJ;Lu, L;Williams, RW
通讯作者:
Williams, RW
影响因子:
30.8
作者:
Yvert, G;Brem, RB;Kruglyak, L
通讯作者:
Kruglyak, L