Colorectal Cancer Prediction Based on Weighted Gene Co-Expression Network Analysis and Variational Auto-Encoder

An effective feature extraction method is key to improving the accuracy of a prediction model. From the Gene Expression Omnibus (GEO) database, which includes 13,487 genes, we obtained microarray gene expression data for 238 samples from colorectal cancer (CRC) samples and normal samples. Twelve gene modules were obtained by weighted gene co-expression network analysis (WGCNA) on 173 samples. By calculating the Pearson correlation coefficient (PCC) between the characteristic genes of each module and colorectal cancer, we obtained a key module that was highly correlated with CRC. We screened hub genes from the key module by considering module membership, gene significance, and intramodular connectivity. We selected 10 hub genes as a type of feature for the classifier. We used the variational autoencoder (VAE) for 1159 genes with significantly different expressions and mapped the data into a 10-dimensional representation, as another type of feature for the cancer classifier. The two types of features were applied to the support vector machines (SVM) classifier for CRC. The accuracy was 0.9692 with an AUC of 0.9981. The result shows a high accuracy of the two-step feature extraction method, which includes obtaining hub genes by WGCNA and a 10-dimensional representation by variational autoencoder (VAE).

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:10

Enthalten in:

Biomolecules - 10(2020), 9 vom: 20. Aug.

Sprache:

Englisch

Beteiligte Personen:

Ai, Dongmei [VerfasserIn]
Wang, Yuduo [VerfasserIn]
Li, Xiaoxin [VerfasserIn]
Pan, Hongfei [VerfasserIn]

Links:

Volltext

Themen:

Classifier
Colorectal cancer
Hub genes
Journal Article
Research Support, Non-U.S. Gov't
Variational autoencoder
Weighted gene co-expression network analysis

Anmerkungen:

Date Completed 06.09.2021

Date Revised 06.09.2021

published: Electronic

Citation Status MEDLINE

doi:

10.3390/biom10091207

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM313989826