Interleukin-4 Receptor Signaling Modulates Neuronal Network Activity
Overview
Authors
Affiliations
Evidence is emerging that immune responses not only play a part in the central nervous system (CNS) in diseases but may also be relevant for healthy conditions. We discovered a major role for the interleukin-4 (IL-4)/IL-4 receptor alpha (IL-4Rα) signaling pathway in synaptic processes, as indicated by transcriptome analysis in IL-4Rα-deficient mice and human neurons with/without IL-4 treatment. Moreover, IL-4Rα is expressed presynaptically, and locally available IL-4 regulates synaptic transmission. We found reduced synaptic vesicle pools, altered postsynaptic currents, and a higher excitatory drive in cortical networks of IL-4Rα-deficient neurons. Acute effects of IL-4 treatment on postsynaptic currents in wild-type neurons were mediated via PKCγ signaling release and led to increased inhibitory activity supporting the findings in IL-4Rα-deficient neurons. In fact, the deficiency of IL-4Rα resulted in increased network activity in vivo, accompanied by altered exploration and anxiety-related learning behavior; general learning and memory was unchanged. In conclusion, neuronal IL-4Rα and its presynaptic prevalence appear relevant for maintaining homeostasis of CNS synaptic function.
Personalized Medicine in Chronic Rhinosinusitis: Treatable Traits Using Biologics for Unmet Needs.
Okano M, Yamada M, Oka A Allergy Asthma Immunol Res. 2025; 17(1):8-21.
PMID: 39895599 PMC: 11791368. DOI: 10.4168/aair.2025.17.1.8.
Jiao W, Lin J, Deng Y, Ji Y, Liang C, Wei S J Neuroinflammation. 2025; 22(1):10.
PMID: 39828676 PMC: 11743025. DOI: 10.1186/s12974-024-03312-3.
Ballasch I, Lopez-Molina L, Galan-Ganga M, Sancho-Balsells A, Rodriguez-Navarro I, Borras-Pernas S J Neuroinflammation. 2024; 21(1):326.
PMID: 39695786 PMC: 11658472. DOI: 10.1186/s12974-024-03320-3.
Why do central nervous system barriers host a diverse immune landscape?.
Zanluqui N, McGavern D Trends Immunol. 2024; 45(10):738-749.
PMID: 39299888 PMC: 11471389. DOI: 10.1016/j.it.2024.08.009.
Cytokine expression profiles in children and adolescents with tic disorders.
Kutuk M, Tufan A, Kilicaslan F, Gokcen C, Aksu G, Yektas C Sci Rep. 2024; 14(1):15101.
PMID: 38956051 PMC: 11219894. DOI: 10.1038/s41598-024-62121-z.