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Salvador-Martín, Sara; Rubbini, Gianluca; Vellosillo, Perceval; Zapata-Cobo, Paula; Velasco, Marta; Palomino, Laura M.; Clemente, Susana; Segarra, Oscar; Moreno-Álvarez, Ana; Fernández-Lorenzo, Ana; Pérez-Moneo, Begoña; Montraveta, Montserrat; Sánchez, Cesar; Tolín, Mar; Loverdos, Inés; Fobelo, María José; Navas-López, Victor Manuel; Magallares, Lorena; García-Romero, Ruth; Torres-Peral, Ricardo; Rodríguez, Alejandro; Bossacoma, Ferrán; Merino-Bohórquez, Vicente; Salcedo, Enrique; Álvarez, Rebeca; Dopazo, Ana; Sanjurjo-Sáez, María; López-Fernández, Luis A.
Biomedicine & pharmacotherapy, April 2024, 2024-Apr, 2024-04-00, 20240401, 2024-04-01, Volume: 173Journal Article
Changes in gene expression profiles among individuals with inflammatory bowel diseases (IBDs) could potentially influence the responsiveness to anti-TNF treatment. The aim of this study was to identify genes that could serve as predictors of early response to anti-TNF therapies in pediatric IBD patients prior to the initiation of treatment. We conducted a prospective, longitudinal, and multicenter study, enrolling 24 pediatric IBD patients aged less than 18 years who were initiating treatment with either infliximab or adalimumab. RNA-seq from blood samples was analyzed using the DESeq2 library by comparing responders and non-responders to anti-TNF drugs. Bioinformatic analyses unveiled 102 differentially expressed genes, with 99 genes exhibiting higher expression in responders compared to non-responders prior to the initiation of anti-TNF therapy. Functional enrichment analyses highlighted defense response to Gram-negative bacteria (FDR = 2.3 ×10–7) as the most significant biological processes, and hemoglobin binding (FDR = 0.002), as the most significant molecular function. Gene Set Enrichment Analysis (GSEA) revealed notable enrichment in transcriptional misregulation in cancer (FDR = 0.016). Notably, 13 genes (CEACAM8, CEACAM6, CILP2, COL17A1, OLFM4, INHBA, LCN2, LTF, MMP8, DEFA4, PRTN3, AZU1, and ELANE) were selected for validation, and a consistent trend of increased expression in responders prior to drug administration was observed for most of these genes, with findings for 4 of them being statistically significant (CEACAM8, LCN2, LTF2, and PRTN3). We identified 102 differentially expressed genes involved in the response to anti-TNF drugs in children with IBDs and validated CEACAM8, LCN2, LTF2, and PRTN3. Genes participating in defense response to Gram-negative bacterium, serine-type endopeptidase activity, and transcriptional misregulation in cancer are good candidates for anticipating the response to anti-TNF drugs in children with IBDs. Display omitted •Baseline gene expression in blood associates with the response to anti-TNF drugs.•RNA-seq identified 102 genes associated with the response to anti-TNF drugs.•PRTN3, LTF, LCN, and CEACAM8 are overexpressed in responder children.•Cancer-related genes impact the response to anti-TNF drugs.•Overexpressed genes in responder children directly link to TNF processes.
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