Description

Human Interleukin-12 (IL-12) is a heterodimeric cytokine composed of two subunits, p35 and p40, forming a complex with a molecular weight of approximately 70 kDa. IL-12 is predominantly produced by antigen-presenting cells such as dendritic cells and macrophages. It plays a pivotal role in bridging innate and adaptive immunity by orchestrating the immune system’s response to pathogens and tumors.

IL-12 exerts its effects by binding to the IL-12 receptor (IL-12R), which consists of the IL-12Rβ1 and IL-12Rβ2 subunits. This interaction activates the STAT4 signaling pathway, which is crucial for promoting T helper type 1 (Th1) responses. IL-12 enhances cellular immunity, including the production of interferon-gamma (IFN-γ) and the activation of natural killer (NK) cells, thereby playing a critical role in defense against intracellular pathogens and cancer cells.

Key Features

1. Th1 Polarization: IL-12 is essential for Th1 differentiation, driving the immune response toward cellular immunity and enhancing the production of IFN-γ. This Th1 polarization is crucial for effective immune responses against intracellular pathogens and tumors.
2. Research Applications: IL-12 is widely utilized in cancer research and vaccine development. Its ability to stimulate robust anti-tumor immune responses makes it a valuable tool in exploring novel immunotherapies and vaccine strategies.
3. NK Cell Activation: IL-12 significantly enhances the cytotoxic activity of NK cells, contributing to the innate immune defense by promoting the destruction of infected or transformed cells.

Sequence

Theoretical pI/Mw

6.12 / 22542.13