Interleukin-12 (IL-12), but not IL-23, induces the expression of IL-7 in microglia and macrophages: implications for multiple sclerosis

Interleukin-12 (IL-12), but not IL-23, deficiency ameliorates viral encephalitis without affecting viral control.

The relative contributions of interleukin-12 (IL-12) and IL-23 to viral pathogenesis have not been extensively studied. IL-12p40 mRNA rapidly increases after neurotropic coronavirus infection. Infection of mice defective in both IL-12 and IL-23 (p40(-/-)), in IL-12 alone (p35(-/-)), and in IL-23 alone (p19(-/-)) revealed that the symptoms of coronavirus-induced encephalitis are regulated by IL-...

Responses to Leishmania donovani in mice deficient in interleukin-12 (IL-12), IL-12/IL-23, or IL-18.

Interleukin-12 (IL-12) orchestrates acquired resistance in intracellular Leishmania donovani infection in the liver, inducing gamma interferon and, in turn, macrophage activation and parasite killing. Nevertheless, testing in IL-18(-/-) mice compared to wild-type mice and in IL-12p40(-/-) compared to IL-12p35(-/-) mice also suggested both early-acting (IL-18) and late-acting (IL-23) antileishma...

Targeting the IL-12/IL-23 axis

Combination immune checkpoint blockade has demonstrated significant clinical responses in cancers infiltrated by T cells. Many tumors contain high proportions of myeloid cells and these can secrete immunosuppressive cytokines like IL-23. Our data suggest the clinical potential of using anti-CD40 (push) and anti-IL-23 mAbs (pull) to tip the IL-12/23 balance in established tumors and act as an al...

Expression in Human Macrophages Regulation of Virus-Induced IL-12 and IL-23

Interleukin-12 (IL-12) and IL-23 Induction of Substance P Synthesis in Murine T Cells and Macrophages Is Subject to IL-10 and Transforming Growth Factor Regulation

Substance P is a tachykinin that enhances pathways of inflammation. Leukocytes at sites of intestinal inflammation make substance P. This study explored the role of interleukin-12 (IL-12), IL-23, and the regulatory cytokines IL-10 and transforming growth factor (TGF) in controlling leukocyte substance P production. In murine schistosomiasis, it was found that IL-12 and IL-23 drive substance P g...