Apichat Suratanee.. Computational approach for constructing a SNP network and inferring phenotypic relationships. (). King Mongkut's University of Technology North Bangkok. Central Library. : , 2017.
Computational approach for constructing a SNP network and inferring phenotypic relationships
Abstract:
Genetic variation causes changes in phenotypes when expression levels are
altered. This sequence changes occurred at the amino acid level influencing the
function or properties of a protein. Single-nucleotide polymorphisms (SNPs)
represent the most common genetic variation in humans, accounting for more
than 90% of all differences between unrelated people. They are used as markers
for population divergence studies. Moreover, SNPs can be utilized as markers in
some phenotypic studies of complex diseases and pharmacogenomics. In this
study, we employed protein-protein interactions information including SNPs
information and other curated and experimental information and integrated with
disease-gene associations as important information for revealing important
phenotypes of protein functions under disease conditions. Although several
studies have attempted to identify disease-gene associations, the number of
possible disease-gene associations is very small. High-throughput technologies
have been established experimentally to identify the association between genes
and diseases. However, these techniques are still quite expensive, time consuming,
and even difficult to perform. Thus, based on currently available data and knowledge, computational methods have served as alternatives to provide more
possible relationships to increase our understanding of disease mechanisms. Here,
a new network-based algorithm, namely, Disease-Gene Association (DGA), was
developed to calculate the association score of a query gene to a new possible set
of diseases. Novel plausible disease-gene pairs were identified and statistically
scored by our algorithm using neighboring protein information. The results
yielded high performance for disease-gene prediction, with an F-measure of 0.78
and an AUC of 0.86. Promising candidates of phenotypic relationships with
selection techniques were presented. Our developed algorithm is simple, efficiently
identifies diseasegene associations in the protein-protein interaction network and
provides additional knowledge regarding disease-gene associations. This method
can be generalized to other association studies to further advance biomedical
science