A Bayesian gene network reveals insight into the JAK-STAT pathway in systemic lupus erythematosus


Autoři: Yupeng Li aff001;  Richard E. Higgs aff001;  Robert W. Hoffman aff001;  Ernst R. Dow aff001;  Xiong Liu aff001;  Michelle Petri aff002;  Daniel J. Wallace aff003;  Thomas Dörner aff004;  Brian J. Eastwood aff001;  Bradley B. Miller aff001;  Yushi Liu aff001
Působiště autorů: Eli Lilly and Company, Indianapolis, Indiana, United States of America aff001;  Hopkins Lupus Center, John Hopkins University, Baltimore, Maryland, United States of America aff002;  David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America aff003;  Charité University Hospitals, Berlin, Germany aff004
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article
doi: 10.1371/journal.pone.0225651

Souhrn

Systemic lupus erythematosus (SLE) is a chronic, remitting, and relapsing, inflammatory disease involving multiple organs, which exhibits abnormalities of both the innate and adaptive immune responses. A limited number of transcriptomic studies have characterized the gene pathways involved in SLE in an attempt to identify the key pathogenic drivers of the disease. In order to further advance our understanding of the pathogenesis of SLE, we used a novel Bayesian network algorithm to hybridize knowledge- and data-driven methods, and then applied the algorithm to build an SLE gene network using transcriptomic data from 1,760 SLE patients’ RNA from the two tabalumab Phase III trials (ILLUMINATE-I & -II), the largest SLE RNA dataset to date. Further, based on the gene network, we carried out hub- and key driver-gene analyses for gene prioritization. Our analyses identified that the JAK-STAT pathway genes, including JAK2, STAT1, and STAT2, played essential roles in SLE pathogenesis, and reaffirmed the recent discovery of pathogenic relevance of JAK-STAT signaling in SLE. Additionally, we showed that other genes, such as IRF1, IRF7, PDIA4, FAM72C, TNFSF10, DHX58, SIGLEC1, and PML, may be also important in SLE and serve as potential therapeutic targets for SLE. In summary, using a hybridized network construction approach, we systematically investigated gene-gene interactions based on their transcriptomic profiles, prioritized genes based on their importance in the network structure, and revealed new insights into SLE activity.

Klíčová slova:

Gene expression – Gene regulation – Gene regulatory networks – Genetic networks – Interferons – Transcriptome analysis – JAK-STAT signaling cascade


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