Autophagy, autoimmunity and autoimmune diseases

Médecine sciences : M/S
Sylviane Muller

Abstract

Autoimmune diseases such as systemic lupus, are the consequence of immunity directed against the organism itself. The immune system abnormally recognizes self-components as foreign and produces antibodies targeting normal cells and tissues. We and others have discovered a number of failures affecting autophagy pathways in the lymphocytes of model mice and patients with lupus. While the current treatments are mainly based on immunosuppressive drugs that can lead to important side effects, the synthetic phosphopeptide P140/Lupuzor, which targets chaperone-mediated autophagy and displays no side effects, holds a lot of promise as a drug candidate. P140, which is currently evaluated in a phase III clinical trial, targets chaperone-mediated autophagy that is hyperactivated in lupus mice, and reduces antigenic peptides presentation to autoreactive helper T cells. Remarkably, we showed in lupus mice that upon treatment with P140, a number of immunological abnormalities affecting the pool of T and B cells as well as many biological and clinical features no longer occur.

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Citations

Sep 19, 2019·Médecine sciences : M/S·Mathilde GalaisMartine Biard-Piechaczyk

Related Concepts

Metazoa
Autoimmune Diseases
Programmed Cell Death, Type II
B-Lymphocytes
Lupus Erythematosus, Systemic
Autoimmune Response
Antigen Processing
Mouse, Swiss
Autoimmune Diseases
Autophagy

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