Project description:Systemic Lupus Erythematosus (SLE) is a systemic autoimmune disease that displays a significant gender difference in terms of incidence and severity. However, the underlying mechanisms accounting for sexual dimorphism remain unclear. To reveal the heterogeneity in the pathogenesis of SLE between male and female patients. PBMC were collected from 15 patients with SLE (7 males, 8 females) and 15 age-matched healthy controls (7 males, 8 females) for proteomic analysis. Enrichment analysis of proteomic data revealed that type I interferon signaling and neutrophil activation networks mapped to both male and female SLE, while male SLE has a higher level of neutrophil activation compared with female SLE. Our findings define gender heterogeneity in the pathogenesis of SLE and may facilitate the development of gender-specific treatments.
Project description:Stimulation experiments were done with PBMC from SLE or healthy donors treated with CSL362 or isotype control before stimulation with various stimuli including the TLR9 agonist 0.25 μM CpGc; the TLR4 agonist 10 μg/ml LPS; and the TLR3 agonist 10 μg/ml POLY I:C. As well as the SLE specific stimuli SLE immunoglobulin (Ig) + necrotic cell lysates (NCL) to form immune complexes; control healthy donor Ig + NCL; and SLE sera + NCL; or healthy donor sera + NCL to understand the specific effects of pDC depletion on different inducible gene transcripts.
Project description:Bulk RNAsequencing of CD4+ T-cells in SLE patients with (SLE-P) and without (SLE-NP) subclinical atherosclerotic plaques in carotid and femoral arteries, scanned by vascular ultrasound.
Project description:Mature neutrophis were freshly isolated from blood of pediatric systemic lupus erythematosus (SLE) patients and healthy donors. Illumina microarray was used to assess transcriptional changes between SLE group and Control group. To uderstand further the gene expression difference between SLE and healthy neutrofils, neutrophils from healthy donors were cultured with autologous sera, SLE sera or Interferon and microarray data was used to compare with fresh SLE neutrophils.
Project description:Mature neutrophis were freshly isolated from blood of pediatric systemic lupus erythematosus (SLE) patients and healthy donors. Illumina microarray was used to assess transcriptional changes between SLE group and Control group. To uderstand further the gene expression difference between SLE and healthy neutrofils, neutrophils from healthy donors were cultured with autologous sera, SLE sera or Interferon and microarray data was used to compare with fresh SLE neutrophils. (Expt 1) Neutrophils from 21 SLE samples (19 patients) and 12 healthy donors were isolated, and extracted RNAs were used generate microarray data. (Expt 2) Neutrophils isolated from 2 healthy children (not used in the first experiment) were cultured with autologous sera (control), Interferon alpha (100U and 1000U), and 4 SLE sera and 6 SLE sera for 6 hours and RNAs were extract for microarray experiment.
Project description:B cells orchestrate the autoimmune responses in patients with systemic lupus erythematosus (SLE), but broad based B-cell directed therapies only show modest efficacy while attenuating humoral immune responses to vaccines and inducing acquired immunodeficiency. used proteomic and transcriptomic analyses of B cells from patients with SLE and healthy individuals and demonstrated a dominant DDR in SLE B cells.