NCT04440566

O-GlcNAcylation Role in the Pathophysiology of Systemic Lupus Erythematosus

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 50 (actual)
• Sponsor: University Hospital, Bordeaux · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This study aims at defining the role of O-GlcNAcylation is in the physiopathology of systemic lupus erythematosus (SLE). O-GlcNAcylation is a metabolic pathway potentially implicated in SLE with potential for the discovery of new therapeutic strategies.

Detailed description

Systemic lupus erythematosus (SLE) is a rare and potentially life-threatening auto-immune systemic disease. There is an urgent need for better comprehension of the physiopathology of the disease and to discover new therapeutic pathways. The hexosamine biosynthesis pathway, or HBP, is an important regulator of immunity and results in a post-transductional modification of proteins called O-GlcNAcylation and involved in inflammation and immunity. There is a very unbalanced sex ratio in favor of women in SLE suggesting a role of the X chromosome in the physiopathology of the disease. The human OGT gene (a key O-GlcNAcylation enzyme) is localized on the X chromosome, near the XIST gene responsible for the inactivation of one X chromosome by methylation. Moreover, genes encoding CD40L, CXCR3 and OGT have been shown to be demethylated and overexpressed in T cells of women with systemic systemic lupus erythematosus compared to men with the same pathology. The investigators hypothesize that O-GlcNAcylation is increased in the effector lymphocytes of SLE patients and involved in the pathophysiology of the disease. Therefore, inhibiting O-GlcNAcylation may be a promising therapeutic option in SLE. This study will recruit 100 patients with SLE followed in Bordeaux University Hospital. Among classical disease activity information, blood samples will be collected at study visit to study O-GlcNAcylation levels in immune cells. Fundamental research will be realized on patients' sample. Clinical and biological disease activity, treatment and outcomes will be studied in correlation with O-GlcNAcylation levels. Patients will be included within their usual follow-up. No extra visit will be needed and blood samples will be drawn at the same times as those drawn for clinical purposes.

Conditions

• Systemic Lupus Erythematosus

Interventions

Type	Name	Description
BIOLOGICAL	blood sample	30 ml whole blood for Peripheral blood mononuclear cell (PBMC) and monocytes isolation

Timeline

• Start date: 2020-10-13
• Primary completion: 2022-02-14
• Completion: 2022-02-14
• First posted: 2020-06-19
• Last updated: 2024-01-19

Locations

1 site across 1 country: France