The alteration of IL-17 signaling pathway in bipolar disorder: a preliminary study with transcriptomic perspective

ObjectiveBipolar Disorder (BD) is a complex psychiatric condition influenced by genetic and environmental factors. This study aims to explore global mRNA expression in Peripheral blood white cells (PBMC) of BD patients.MethodsWe analyzed whole-genome gene expression profiles from PBMC of 12 BD state...

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Main Authors: Xiaobo Wang, Su Yu, Zhen Gao, Fangming Xu, Yumei Wang, Tianle Zhang, Tingting Xie, Xihua Jia
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-06-01
Series:Frontiers in Psychiatry
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Online Access:https://www.frontiersin.org/articles/10.3389/fpsyt.2025.1539038/full
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author Xiaobo Wang
Xiaobo Wang
Su Yu
Zhen Gao
Fangming Xu
Yumei Wang
Yumei Wang
Yumei Wang
Tianle Zhang
Tingting Xie
Xihua Jia
author_facet Xiaobo Wang
Xiaobo Wang
Su Yu
Zhen Gao
Fangming Xu
Yumei Wang
Yumei Wang
Yumei Wang
Tianle Zhang
Tingting Xie
Xihua Jia
author_sort Xiaobo Wang
collection DOAJ
description ObjectiveBipolar Disorder (BD) is a complex psychiatric condition influenced by genetic and environmental factors. This study aims to explore global mRNA expression in Peripheral blood white cells (PBMC) of BD patients.MethodsWe analyzed whole-genome gene expression profiles from PBMC of 12 BD states-manic (BD-M), 12 BD states-depressive (BD-D), and 12 matched healthy controls (HC) using microarrays. Validation of differentially expressed genes within the IL-17 pathway was conducted through qRT-PCR, while ELISA measured specific protein levels. GO and KEGG pathway enrichment analyses were performed, alongside PPI analysis and Gene Set Variation Analysis (GSVA) to assess immune cell infiltration.ResultsIn the comparison between BD and HC, a total of 304 differentially expressed genes (DEGs) were identified, of which 217 genes were upregulated and 87 genes were downregulated. In the comparisons between BD and HC, BD-M and HC, and BD-D and HC, 91 DEGs were found. Enrichment analysis suggested that biological processes and signaling pathways related to extracellular matrix, stress response, heparin binding, and immune inflammation were upregulated in the BD group. KEGG analysis and PPI results indicate that the IL-17 signaling pathway plays an important role in BD and its subtypes. In the IL-17 signaling pathway, compared to HC, the expression of Jun, Fosb, Fosl1, TNFAIP3, NFKBIA, CXCL2, CXCL8, IL6 and IL17 genes was upregulated in BD patients. RT-qPCR analysis showed that the expression of Jun, Fosb, Fosl1, NFKBIA, TNFAIP3, CXCL2, and CXCL8 genes was significantly upregulated in BD, ELISA results indicated that the protein levels of CXCL8/IL-8, IL-6 and IL-17 in the BD group were significantly higher than those in the HC group (all P < 0.05). Immune infiltration analysis showed that central memory CD4+ T cells (P=0.010), eosinophils (P=0.038), and mast cells (P=0.029) were increased in infiltration in the BD group.ConclusionThis study integrates transcriptomics and immune microenvironment analysis, suggesting that the IL-17 signaling pathway may be involved in the pathogenesis of BD and its subtypes through inflammation triggered by chemokines. This research deepens our understanding of the molecular mechanisms of BD and emphasizes the importance of the immune system in its pathology.
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spelling doaj-art-ed3b391706344b0fb9847e95e79f3ce22025-08-20T03:07:51ZengFrontiers Media S.A.Frontiers in Psychiatry1664-06402025-06-011610.3389/fpsyt.2025.15390381539038The alteration of IL-17 signaling pathway in bipolar disorder: a preliminary study with transcriptomic perspectiveXiaobo Wang0Xiaobo Wang1Su Yu2Zhen Gao3Fangming Xu4Yumei Wang5Yumei Wang6Yumei Wang7Tianle Zhang8Tingting Xie9Xihua Jia10Department of Psychiatry, the First Hospital of Hebei Medical University, Shijiazhuang, Hebei, ChinaDepartment of Clinical Psychology, The First Central Hospital of Baoding, Baoding, Hebei, ChinaDepartment of Psychiatry, the First Hospital of Hebei Medical University, Shijiazhuang, Hebei, ChinaInstitute of Brain Science and Brain-Inspired Research, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shangdong, ChinaDepartment of Psychiatry, the First Hospital of Hebei Medical University, Shijiazhuang, Hebei, ChinaDepartment of Psychiatry, the First Hospital of Hebei Medical University, Shijiazhuang, Hebei, ChinaInstitute of Brain Science and Brain-Inspired Research, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shangdong, ChinaDepartmentof Psychology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shangdong, ChinaDepartment of Psychiatry, the First Hospital of Hebei Medical University, Shijiazhuang, Hebei, ChinaInstitute of Brain Science and Brain-Inspired Research, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shangdong, ChinaDepartment of Oncology, The First Central Hospital of Baoding, Baoding, Hebei, ChinaObjectiveBipolar Disorder (BD) is a complex psychiatric condition influenced by genetic and environmental factors. This study aims to explore global mRNA expression in Peripheral blood white cells (PBMC) of BD patients.MethodsWe analyzed whole-genome gene expression profiles from PBMC of 12 BD states-manic (BD-M), 12 BD states-depressive (BD-D), and 12 matched healthy controls (HC) using microarrays. Validation of differentially expressed genes within the IL-17 pathway was conducted through qRT-PCR, while ELISA measured specific protein levels. GO and KEGG pathway enrichment analyses were performed, alongside PPI analysis and Gene Set Variation Analysis (GSVA) to assess immune cell infiltration.ResultsIn the comparison between BD and HC, a total of 304 differentially expressed genes (DEGs) were identified, of which 217 genes were upregulated and 87 genes were downregulated. In the comparisons between BD and HC, BD-M and HC, and BD-D and HC, 91 DEGs were found. Enrichment analysis suggested that biological processes and signaling pathways related to extracellular matrix, stress response, heparin binding, and immune inflammation were upregulated in the BD group. KEGG analysis and PPI results indicate that the IL-17 signaling pathway plays an important role in BD and its subtypes. In the IL-17 signaling pathway, compared to HC, the expression of Jun, Fosb, Fosl1, TNFAIP3, NFKBIA, CXCL2, CXCL8, IL6 and IL17 genes was upregulated in BD patients. RT-qPCR analysis showed that the expression of Jun, Fosb, Fosl1, NFKBIA, TNFAIP3, CXCL2, and CXCL8 genes was significantly upregulated in BD, ELISA results indicated that the protein levels of CXCL8/IL-8, IL-6 and IL-17 in the BD group were significantly higher than those in the HC group (all P < 0.05). Immune infiltration analysis showed that central memory CD4+ T cells (P=0.010), eosinophils (P=0.038), and mast cells (P=0.029) were increased in infiltration in the BD group.ConclusionThis study integrates transcriptomics and immune microenvironment analysis, suggesting that the IL-17 signaling pathway may be involved in the pathogenesis of BD and its subtypes through inflammation triggered by chemokines. This research deepens our understanding of the molecular mechanisms of BD and emphasizes the importance of the immune system in its pathology.https://www.frontiersin.org/articles/10.3389/fpsyt.2025.1539038/fullbipolar disorderDEGs (differentially expressed genes)IL-17 pathwayimmunoinflammatory responseimmune infiltration analysis
spellingShingle Xiaobo Wang
Xiaobo Wang
Su Yu
Zhen Gao
Fangming Xu
Yumei Wang
Yumei Wang
Yumei Wang
Tianle Zhang
Tingting Xie
Xihua Jia
The alteration of IL-17 signaling pathway in bipolar disorder: a preliminary study with transcriptomic perspective
Frontiers in Psychiatry
bipolar disorder
DEGs (differentially expressed genes)
IL-17 pathway
immunoinflammatory response
immune infiltration analysis
title The alteration of IL-17 signaling pathway in bipolar disorder: a preliminary study with transcriptomic perspective
title_full The alteration of IL-17 signaling pathway in bipolar disorder: a preliminary study with transcriptomic perspective
title_fullStr The alteration of IL-17 signaling pathway in bipolar disorder: a preliminary study with transcriptomic perspective
title_full_unstemmed The alteration of IL-17 signaling pathway in bipolar disorder: a preliminary study with transcriptomic perspective
title_short The alteration of IL-17 signaling pathway in bipolar disorder: a preliminary study with transcriptomic perspective
title_sort alteration of il 17 signaling pathway in bipolar disorder a preliminary study with transcriptomic perspective
topic bipolar disorder
DEGs (differentially expressed genes)
IL-17 pathway
immunoinflammatory response
immune infiltration analysis
url https://www.frontiersin.org/articles/10.3389/fpsyt.2025.1539038/full
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