Technical Articles

This article elaborates in detail on the Human IL-4/IL-4R binding detection kit based on Bio-Layer Interferometry (BLI), systematically introducing its applications in analyzing Type I/II receptor complexes, evaluating the efficacy of therapeutic antibodies and small-molecule inhibitors, and providing a quantitative analysis tool for research and drug development in the fields of allergies, asthma, and immune diseases.

B-cell polarizing cytokines are a group of key signaling molecules that direct B-cell differentiation, antibody class switching, and functional specialization.

Th2 cells, as a crucial subset of CD4+ helper T cells, undergo a precisely regulated differentiation process. Naïve CD4+ T cells recognize the MHC class II-peptide complex on the surface of antigen-presenting cells through their T cell receptor, receiving the first signal; simultaneously, they obtain the second signal through costimulatory molecules such as CD28, thereby completing the dual-signal activation.

The core pathogenesis of allergic diseases lies in the abnormal activation of the type 2 inflammatory pathway. This pathway, primarily mediated by T helper 2 (Th2) cells, regulates the direction of the immune response through a complex cytokine network. As a crucial subset of CD4+ T cells, Th2 cells differentiate into effector cells upon allergen stimulation and initiate and sustain the type 2 immune response by secreting the key cytokines interleukin (IL)-4, IL-5, and IL-13.

During the occurrence and development of tumors, the dynamic balance between the body's immune system and tumor cells is disrupted, and tumors achieve immune escape by reshaping the immune microenvironment.

In Type 2 immune response-mediated allergic diseases, IL-4Rα serves as the shared subunit of interleukin-4 (IL-4) and interleukin-13 (IL-13) receptors, emerging as one of the most sought-after targets in the global biopharmaceutical sector. Through dual inhibition of IL-4/IL-13 signaling pathways, it has not only revolutionized therapeutic paradigms for conventional conditions like atopic dermatitis and asthma but also demonstrated remarkable potential across interdisciplinary fields including tumor immunology and viral infections.