RT Journal Article SR Electronic T1 A broken network of susceptibility genes in the monocytes of Crohn’s disease patients JF Life Science Alliance JO Life Sci. Alliance FD Life Science Alliance LLC SP e202302394 DO 10.26508/lsa.202302394 VO 7 IS 9 A1 Liu, Hankui A1 Guan, Liping A1 Su, Xi A1 Zhao, Lijian A1 Shu, Qing A1 Zhang, Jianguo YR 2024 UL https://www.life-science-alliance.org/content/7/9/e202302394.abstract AB Genome-wide association studies have identified over 200 genetic loci associated with inflammatory bowel disease; however, the mechanism of such a large amount of susceptibility genes remains uncertain. In this study, we integrated bioinformatics analysis and two independent single-cell transcriptome datasets to investigate the expression network of 232 susceptibility genes in Crohn’s disease (CD) patients and healthy controls. The study revealed that most of the susceptibility genes are specifically and strictly expressed in the monocytes of the human intestinal tract. The susceptibility genes established a network within the monocytes of health control. The robustness of a gene network may prevent disease onset that is influenced by the genetic and environmental alteration in the expression of susceptibility genes. In contrast, we showed a sparse network in pediatric/adult CD patients, suggesting the broken network contributed to the CD etiology. The network status of susceptibility genes at the single-cell level of monocytes provided novel insight into the etiology.