Myeloid Populations in Systemic Autoimmune Diseases

Area of Science:

• Immunology
• Autoimmunity
• Cell Biology

Background:

• Systemic autoimmune diseases (SADs) involve complex physiopathology and loss of self-tolerance.
• Myeloid leukocytes, including monocytes, macrophages, dendritic cells, and neutrophils, are central to innate immunity and autoimmune responses.

Purpose of the Study:

• To review the role of myeloid populations in the induction and maintenance of major SADs.
• To identify potential therapeutic targets within myeloid cell subsets or proteins for drug development.

Main Methods:

• Review of current scientific literature.
• Analysis of data from preclinical mouse models of SADs.
• Examination of patient data for human SADs.

Main Results:

• Myeloid leukocytes are critical effectors at the innate-adaptive immunity interface.
• These cells orchestrate local and systemic responses to damage-associated molecular patterns (DAMPs).
• Specific myeloid populations are implicated in systemic lupus erythematosus, rheumatoid arthritis, antiphospholipid syndrome, systemic sclerosis, and Sjögren's syndrome.

Conclusions:

• Further research is needed to elucidate the precise mechanisms of myeloid cell involvement in SADs.
• Identifying specific myeloid cell subsets or proteins could lead to novel therapeutic strategies for SADs.