51. Key Molecules and Pathways Underlying Sporadic Amyotrophic Lateral Sclerosis: Integrated Analysis on Gene Expression Profiles of Motor Neurons
- Author
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Chenghui Ye, Pian Huang, Jianing Lin, Weineng Chen, Xiaoli Yao, and Huanxing Su
- Subjects
0301 basic medicine ,bioinformatics analysis ,Bioinformatics analysis ,lcsh:QH426-470 ,Blood vessel morphogenesis ,Biology ,FN1 gene ,Pathogenesis ,Extracellular matrix ,03 medical and health sciences ,0302 clinical medicine ,sporadic amyotrophic lateral sclerosis ,Gene expression ,Genetics ,medicine ,motor neurons ,Amyotrophic lateral sclerosis ,Transcription factor ,Genetics (clinical) ,Original Research ,gene expression profiles ,medicine.disease ,lcsh:Genetics ,030104 developmental biology ,030220 oncology & carcinogenesis ,Molecular Medicine ,Regulatory Pathway ,Neuroscience - Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder characterized by progressive loss of motor neurons. The complex mechanisms underlying ALS are yet to be elucidated, while the lack of disease biomarkers and therapeutic options are associated with the poor prognosis of ALS patients. In this study, we performed bioinformatics analysis to clarify potential mechanisms in sporadic ALS (sALS). We compared three gene expression profiles (GSE18920, GSE56500, and GSE68605) of motor neurons obtained from sALS patients and healthy controls to discover differentially expressed genes (DEGs), and then performed integrated bioinformatics analyses to identify key molecules and pathways underlying sALS. We found that these DEGs were mainly enriched in the structure and functions of extracellular matrix (ECM), while functional enrichment in blood vessel morphogenesis was less correlated with motor neurons. The clustered subnetworks of the constructed protein-protein interaction network for DEGs and the group of selected hub genes were more significantly involved in the organization of collagen-containing ECM. The transcriptional factors database proposed RelA and NF-κB1 from NF-κB family as the key regulators of these hub genes. These results mainly demonstrated the alternations in ECM-related gene expression in motor neurons and suggested the role of NF-κB regulatory pathway in the pathogenesis of sALS.
- Published
- 2020