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Machine learning-based microarray analyses indicate low-expression genes might collectively influence PAH disease
- Source :
- PLoS Computational Biology, Vol 15, Iss 8, p e1007264 (2019), PLoS Computational Biology
- Publication Year :
- 2019
- Publisher :
- Public Library of Science (PLoS), 2019.
-
Abstract
- Accurately predicting and testing the types of Pulmonary arterial hypertension (PAH) of each patient using cost-effective microarray-based expression data and machine learning algorithms could greatly help either identifying the most targeting medicine or adopting other therapeutic measures that could correct/restore defective genetic signaling at the early stage. Furthermore, the prediction model construction processes can also help identifying highly informative genes controlling PAH, leading to enhanced understanding of the disease etiology and molecular pathways. In this study, we used several different gene filtering methods based on microarray expression data obtained from a high-quality patient PAH dataset. Following that, we proposed a novel feature selection and refinement algorithm in conjunction with well-known machine learning methods to identify a small set of highly informative genes. Results indicated that clusters of small-expression genes could be extremely informative at predicting and differentiating different forms of PAH. Additionally, our proposed novel feature refinement algorithm could lead to significant enhancement in model performance. To summarize, integrated with state-of-the-art machine learning and novel feature refining algorithms, the most accurate models could provide near-perfect classification accuracies using very few (close to ten) low-expression genes.<br />Author summary Pulmonary arterial hypertension (PAH) is a serious and progressive disease, with only a roughly 50% of 5-year survival rate even with best available therapies. Accurately detecting/differentiating different forms of PAH and developing drugs that could directly target at genes involved in PAH pathogenesis are essential. We proposed a computational approach using low-cost microarray data collected from a clinical trial and had accurately predicted each PAH group. In particular, we considered the fact that there might exist some low-expression genes that were usually discarded by researchers but might function collectively and significantly controlling the disease in each case. Therefore, we had developed different filtering algorithms that intentionally selected those low-expression genes for constructing prediction model. Using a few highly informative low-expression genes that had never been extensively investigated before, our systematic approach had produced models that could offer prefect accuracy in predicting PAH. Additionally, our analysis also found that the composition of gene factors controlling the PAH etiology under each form are quite different from each other.
- Subjects :
- 0301 basic medicine
Microarray
Computer science
Microarrays
Gene Expression
computer.software_genre
Machine Learning
0302 clinical medicine
Mathematical and Statistical Techniques
Databases, Genetic
Feature (machine learning)
Cluster Analysis
Biology (General)
Oligonucleotide Array Sequence Analysis
Pulmonary Arterial Hypertension
Ecology
Artificial neural network
Applied Mathematics
Simulation and Modeling
Bioassays and Physiological Analysis
Computational Theory and Mathematics
Modeling and Simulation
Physical Sciences
Supervised Machine Learning
DNA microarray
Algorithms
Research Article
Computer and Information Sciences
QH301-705.5
Feature selection
Machine learning
Research and Analysis Methods
03 medical and health sciences
Cellular and Molecular Neuroscience
Machine Learning Algorithms
Text mining
Artificial Intelligence
Support Vector Machines
Genetics
Humans
Hierarchical Clustering
Molecular Biology
Ecology, Evolution, Behavior and Systematics
Artificial Neural Networks
Computational Neuroscience
Models, Genetic
business.industry
Gene Expression Profiling
Computational Biology
Biology and Life Sciences
Hierarchical clustering
Support vector machine
030104 developmental biology
Case-Control Studies
Mutation
Artificial intelligence
business
computer
030217 neurology & neurosurgery
Mathematics
Neuroscience
Subjects
Details
- Language :
- English
- ISSN :
- 15537358
- Volume :
- 15
- Issue :
- 8
- Database :
- OpenAIRE
- Journal :
- PLoS Computational Biology
- Accession number :
- edsair.doi.dedup.....bf290f690d3937580d3b171a8bf19c53