Decoding Regnase-1's role in skin inflammation: potential therapeutic implication for dermatological disorders

Area of Science:

• Dermatology
• Immunology
• Molecular Biology

Background:

• Regnase-1 is a key endoribonuclease regulating immune responses and maintaining skin homeostasis.
• It degrades mRNAs of pro-inflammatory cytokines like IL-1β and IL-6, controlling immune cell function.
• Dysregulation of Regnase-1 is implicated in dermatological disorders, making it a target for skin disease research.

Purpose of the Study:

• To comprehensively review Regnase-1's structure, function, and role in skin biology.
• To explore its influence on inflammatory skin diseases (atopic dermatitis, psoriasis, hidradenitis suppurativa) and skin cancer.
• To highlight Regnase-1's potential as a therapeutic target for skin conditions.

Main Methods:

• Literature review of Regnase-1's functions in skin homeostasis and disease.
• Analysis of Regnase-1's regulatory mechanisms in keratinocytes, melanocytes, and immune cells.
• Examination of Regnase-1's involvement in specific inflammatory skin diseases and cancer development.

Main Results:

• Regnase-1 maintains skin immune homeostasis by degrading cytokine mRNAs (IL-1β, IL-6, IL-17).
• Deficiency in atopic dermatitis exacerbates Th2 responses; in psoriasis, it affects the IL-23/Th17 axis.
• Regnase-1 acts as a tumor suppressor in melanoma but may promote squamous cell carcinoma.

Conclusions:

• Regnase-1's context-specific roles in skin inflammation and cancer are crucial.
• It presents a promising therapeutic target for modulating inflammatory pathways in skin diseases.
• Further research is needed to fully elucidate Regnase-1's functions in diverse skin conditions and immune responses.