Macrophage Functions in Psoriasis: Lessons from Mouse Models.

Area of Science:

• Immunology
• Dermatology
• Autoimmune diseases

Background:

• Psoriasis is a complex systemic autoimmune/autoinflammatory disease.
• Skin-resident macrophages, including Langerhans cells and dermal macrophages, are key immune players.
• These macrophages exhibit phenotypic plasticity, influencing tissue homeostasis and immunity.

Purpose of the Study:

• To review current knowledge on the multifaceted roles of macrophages in psoriasis.
• To highlight macrophages as potential therapeutic targets for psoriasis treatment.
• To identify future research directions for understanding macrophage function in this disease.

Main Methods:

• Review of existing literature on macrophages in psoriasis.
• Analysis of immunological and homeostatic functions of skin macrophages.
• Exploration of therapeutic strategies targeting macrophages.

Main Results:

• Macrophages and Langerhans cells can both initiate and resolve psoriatic inflammation.
• Their dual role is dependent on their activation state and microenvironmental cues.
• Macrophages represent promising targets for innovative psoriasis treatments.

Conclusions:

• Macrophages are critical regulators of psoriatic inflammation, exhibiting context-dependent pro- and anti-inflammatory activities.
• Targeting macrophage phenotypes offers a promising avenue for developing effective psoriasis therapies.
• Further research is needed to fully elucidate macrophage functions and harness their therapeutic potential in psoriasis.