Cellular scars and local crosstalk in relapsing psoriasis: an example of a skin sticking disease

Area of Science:

• Immunodermatology
• Pathogenesis of Psoriasis
• Tissue Memory

Background:

• Psoriasis is a chronic inflammatory skin disease.
• Current systemic therapies targeting TNF, IL-17, and IL-23 are effective but often lead to local relapse.
• Persistent pathological alterations in skin suggest unresolved disease processes.

Purpose of the Study:

• To investigate the existence of local disease memory in psoriasis skin.
• To identify cellular and molecular mechanisms sustaining this memory.
• To explore therapeutic strategies for long-term psoriasis remission.

Main Methods:

• Analysis of cellular components in dermis and epidermis of psoriasis skin.
• Investigation of intercellular crosstalk sustaining disease memory.
• Deciphering mechanisms of pathogenic memory cell establishment and persistence.

Main Results:

• Evidence presented for local disease memory in both dermal and epidermal compartments of psoriasis skin.
• Identification of specific cellular players and their interactions involved in memory formation.
• Understanding how these mechanisms contribute to disease relapse.

Conclusions:

• Psoriasis pathogenesis involves a localized disease memory within the skin.
• This memory, sustained by cellular crosstalk, drives disease relapse.
• Targeting these memory mechanisms offers potential for durable psoriasis remission.