Lupus & antiphospholipid syndrome
Plasma exosomes may mediate the development of lupus nephritis in patients with systemic lupus erythematosus
Authors' conclusion
Our research indicates that the abundant presence of miR-20b-5p and the depletion of miR-181a-2-3p in plasma exosomes of SLE patients may mediate the promotion of apoptosis and autophagy in HK2 cells, thereby causing kidney damage and the development of LN.
Study context
- Population
- Systemic lupus erythematosus (SLE) patients (public plasma exosomal miRNA data and plasma exosomes) and HK2 cells
- Comparison
- Plasma exosomal microRNAs (miRNAs) in SLE patients vs healthy controls; effects of plasma exosomes and miRNA overexpression on HK2 cells
Methodological detailsbioinformatic analysis of public data, qPCR validation, in vitro HK2 cell experiments
- Bioinformatic analysis of public data
- qPCR validation
- In vitro HK2 cell experiments
Main finding
As reported in the abstract
- miR-20b-5p overexpressed in plasma exosomes of SLE patients
- miR-181a-2-3p downregulated in plasma exosomes of SLE patients
- Differential miRNAs primarily regulate apoptosis, autophagy and inflammation (functional enrichment)
- Exosomes regulate apoptosis after co-incubation with PBMCs (flow cytometry)
- Plasma exosomes enter HK2 cells without affecting cell activity
- Plasma exosomes promote HK2 cell apoptosis and autophagy
- miR-181a-2-3p overexpression inhibits HK2 apoptosis and upregulates bcl2 and beclin1
- miR-20b-5p overexpression: trend towards increased HK2 apoptosis, not statistically significant
- miR-20b-5p enhances caspase3 and becin1 and suppresses bcl2 and LC3β
Original publication
Plasma exosomes may mediate the development of lupus nephritis in patients with systemic lupus erythematosus. Lupus. Published 31 October 2024. doi:10.
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