1. Profiling of immune-related gene expression in children with familial hypercholesterolaemia.
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Narverud, I., Christensen, J. J., Bakke, S. S., Ulven, S. M., Rundblad, A., Aukrust, P., Espevik, T., Bogsrud, M. P., Retterstøl, K., Ueland, T., Halvorsen, B., and Holven, K. B.
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GENE expression profiling , *FAMILIAL hypercholesterolemia , *ATHEROSCLEROSIS , *B cells , *BLOOD cells , *T cells , *ANTIGEN presentation , *COMPARATIVE studies , *GENE expression , *LOW density lipoproteins , *RESEARCH methodology , *MEDICAL cooperation , *RESEARCH , *EVALUATION research - Abstract
Background: Innate and adaptive immune responses are pivotal in atherosclerosis, but their association with early-stage atherosclerosis in humans is incompletely understood. In this regard, untreated children with familial hypercholesterolaemia may serve as a human model to investigate the effect of elevated low-density lipoprotein (LDL)-cholesterol.Objectives: We aimed to study the immunological and inflammatory pathways involved in early atherosclerosis by examining mRNA molecules in peripheral blood mononuclear cells (PBMCs) from children with FH.Methods: We analysed the level of 587 immune-related mRNA molecules using state-of-the-art Nanostring technology in PBMCs from children with (n = 30) and without (n = 21) FH, and from FH children before and after statin therapy (n = 10).Results: 176 genes (30%) were differentially expressed between the FH and healthy children at P < 0.05. Compared to healthy children, the dysregulated pathways in FH children included the following: T cells (18/19); B cells (5/6); tumour necrosis factor super family (TNFSF) (6/8); cell growth, proliferation and differentiation (5/7); interleukins (5/9); toll-like receptors (2/5); apoptosis (3/7) and antigen presentation (1/7), where the ratio denotes higher expressed genes to total number of genes. Statin therapy reversed expression of thirteen of these mRNAs in FH children.Conclusion: FH children display higher PBMC expression of immune-related genes mapped to several pathways, including T and B cells, and TNFSF than healthy children. Our results suggest that LDL-C plays an important role in modulating expression of different immune-related genes, and novel data on the involvement of these pathways in the early atherosclerosis may represent future therapeutic targets for prevention of atherosclerotic progression. [ABSTRACT FROM AUTHOR]- Published
- 2020
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