Clustering of genes from microarray data using hierarchical projective adaptive resonance theory: a case study of tuberculosis. (9th August 2021)

• Record Type: Journal Article
• Authors: Zhang, Xu; Kim, Kiyeon; Ye, Zhiqiang; Wu, Jianhong; Qiao, Feng; Zou, Quan
• Is Part Of: Briefings in functional genomics. Volume 21:Number 2(2022)
• Page Start: 113
• Page End: 127
• Publication Date: 2021-08-09
• Subjects: hierarchical projective adaptive resonance theory -- neural network -- quasi-supervised clustering -- tuberculosis; Genomics -- Methodology -- Periodicals; Genomics -- Technological innovations -- Periodicals; 572.86072
• DOI: 10.1093/bfgp/elab034
• Languages: English
• ISSNs: 2041-2649

Abstract

Abstract: We propose the hierarchical Projective Adaptive Resonance Theory (PART) algorithm for classification of gene expression data. This algorithm is realized by combing transposed quasi-supervised PART and unsupervised PART. We develop the corresponding validation statistics for each process and compare it with other clustering algorithms in a case study of tuberculosis (TB). First, we use sample-based transposed quasi-supervised PART to obtain optimal clustering results of samples distinguished by time post-infection and the representative genes for each cluster including up-regulated, down-regulated and stable genes. The up- and down-regulated genes show more than 90% similarity to the result derived from Linear Models for Microarray Data and are verified by weighted k-nearest neighbor model on TB projection. Second, we use gene-based unsupervised PART algorithm to cluster these representative genes where functional enrichment analysis is conducted in each cluster. We further confirm the main immune response of human macrophage-like THP-1 cells against TB within 2 days is type I interferon-mediated innate immunity. This study demonstrates how hierarchical PART algorithm analyzes microarray data. The sample-based quasi-supervised PART extracts representative genes and narrows down the shortlist of disease-relevant genes and gene-based unsupervised PART classifies representative genes that help to interpret immune response against TB.