Probing the Code of Chronic Urticaria Pathogenesis: How the ceRNA Network Regulates Mast Cell Activation

Area of Science:

• Immunodermatology
• Molecular Biology
• RNA Biology

Background:

• Chronic Urticaria (CU) involves mast cell (MC) activation, with many patients unresponsive to current treatments.
• The competitive endogenous RNA (ceRNA) network is implicated in MC signaling, but its regulatory hierarchy is unclear.

Purpose of the Study:

• To analyze the ceRNA network's role in sustained MC activation in CU.
• To propose a three-tiered regulatory model for ceRNA networks in CU.
• To evaluate ceRNA-targeting strategies for precision therapy in CU.

Main Methods:

• Systematic literature review of PubMed/Web of Science (2000-2024).
• Keywords: "chronic urticaria", "ceRNA", "lncRNA", "circRNA", "mast cell".
• Integration of ceRNA mechanisms and pathway analysis with schematic representations.

Main Results:

• The ceRNA network exhibits three hierarchical regulatory levels.
• Level 1: Core RNAs (e.g., NEAT1) sequester microRNAs (miRNAs), affecting signaling pathways.
• Level 2: Shared miRNAs (e.g., miR-155) link upstream and downstream targets.
• Level 3: Effector molecules (e.g., STAT3) mediate mast cell activation.

Conclusions:

• The ceRNA network is crucial for sustained mast cell activation in chronic urticaria.
• A three-tiered regulatory model elucidates ceRNA network function.
• RNA therapeutics and exosome delivery targeting ceRNA axes present novel strategies for refractory CU.