Glucocorticoid-mediated acetylated regulation of glucocorticoid receptor and Histone3/Histone4 influence glucocorticoid heterogeneity in children patients with primary nephrotic syndrome
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View abstract on PubMed
Summary
This summary is machine-generated.Glucocorticoid (GC) resistance in nephrotic syndrome is linked to epigenetic changes. Increased acetylation of the GC receptor (Ac-GR) and histones (Ac-H3, Ac-H4), along with NF-κB activity, indicates resistance, suggesting GC therapy impacts these epigenetic markers.
Area Of Science
- Molecular Biology
- Epigenetics
- Immunology
Background
- Glucocorticoid (GC) response heterogeneity is a significant prognostic factor in various conditions, but its underlying mechanisms remain unclear.
- Epigenetic modifications are increasingly recognized as crucial regulators of gene expression and cellular responses.
Purpose Of The Study
- To investigate the epigenetic factors contributing to variable glucocorticoid (GC) response in patients with nephrotic syndrome.
- To explore the role of histone and glucocorticoid receptor acetylation in steroid-sensitive (SSNS) versus steroid-resistant nephrotic syndrome (SRNS).
Main Methods
- Quantification of glucocorticoid receptor (GR), acetylated GR (Ac-GR), acetylated histone H3 (Ac-H3), acetylated histone H4 (Ac-H4), and nuclear factor-κB (NF-κB) activity in peripheral blood lymphocytes.
- Comparison of these epigenetic markers between control, SSNS, and SRNS patient groups before and after GC treatment.
Main Results
- Significant differences in Ac-GR, Ac-H3, Ac-H4, and NF-κB activity were observed among control, SSNS, and SRNS groups, with higher levels in SRNS.
- GC treatment led to decreased Ac-GR, Ac-H3, Ac-H4, and NF-κB activity in SSNS patients, but increased levels in SRNS patients.
- Distinct correlations between NF-κB, Ac-GR, Ac-H3, and Ac-H4 were found in SSNS versus SRNS groups, suggesting differential epigenetic regulation.
Conclusions
- Expression levels of Ac-GR, Ac-H3, and Ac-H4 significantly differ in children with primary nephrotic syndrome (PNS) exhibiting distinct GC responses.
- Glucocorticoid therapy appears to directly influence the acetylation status of the GC receptor, histone H3, and histone H4, highlighting an epigenetic basis for GC response variability.
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