Abstract
Background: Cancer threatens human health seriously. Diagnosing cancer via gene expression analysis is a hot topic in cancer research.
Objective: The study aimed to diagnose the accurate type of lung cancer and discover the pathogenic genes.
Methods: In this study, Affinity Propagation (AP) clustering with similarity score was employed to each type of lung cancer and normal lung. After grouping genes, sparse group lasso was adopted to construct four binary classifiers and the voting strategy was used to integrate them.
Results: This study screened six gene groups that may associate with different lung cancer subtypes among 73 genes groups, and identified three possible key pathogenic genes, KRAS, BRAF and VDR. Furthermore, this study achieved improved classification accuracies at minority classes SQ and COID in comparison with other four methods.
Conclusion: We propose the AP clustering based sparse group lasso (AP-SGL), which provides an alternative for simultaneous diagnosis and gene selection for lung cancer.
Keywords: Lung cancer, gene selection, affinity propagation clustering, sparse group lasso, multi-classification, miRNA.
Graphical Abstract
Current Bioinformatics
Title:Lung Cancer Classification and Gene Selection by Combining Affinity Propagation Clustering and Sparse Group Lasso
Volume: 15 Issue: 7
Author(s): Juntao Li*, Mingming Chang, Qinghui Gao, Xuekun Song and Zhiyu Gao
Affiliation:
- College of Mathematics and Information Science, Henan Normal University, Xinxiang, 453007,China
Keywords: Lung cancer, gene selection, affinity propagation clustering, sparse group lasso, multi-classification, miRNA.
Abstract:
Background: Cancer threatens human health seriously. Diagnosing cancer via gene expression analysis is a hot topic in cancer research.
Objective: The study aimed to diagnose the accurate type of lung cancer and discover the pathogenic genes.
Methods: In this study, Affinity Propagation (AP) clustering with similarity score was employed to each type of lung cancer and normal lung. After grouping genes, sparse group lasso was adopted to construct four binary classifiers and the voting strategy was used to integrate them.
Results: This study screened six gene groups that may associate with different lung cancer subtypes among 73 genes groups, and identified three possible key pathogenic genes, KRAS, BRAF and VDR. Furthermore, this study achieved improved classification accuracies at minority classes SQ and COID in comparison with other four methods.
Conclusion: We propose the AP clustering based sparse group lasso (AP-SGL), which provides an alternative for simultaneous diagnosis and gene selection for lung cancer.
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Cite this article as:
Li Juntao *, Chang Mingming, Gao Qinghui, Song Xuekun and Gao Zhiyu, Lung Cancer Classification and Gene Selection by Combining Affinity Propagation Clustering and Sparse Group Lasso, Current Bioinformatics 2020; 15 (7) . https://dx.doi.org/10.2174/1574893614666191017103557
DOI https://dx.doi.org/10.2174/1574893614666191017103557 |
Print ISSN 1574-8936 |
Publisher Name Bentham Science Publisher |
Online ISSN 2212-392X |
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