ifn-a-17

3-Hydroxykynurenamine, also known as 3-Hydroxy-L-kynurenamine or 3-HKA, is a biogenic amine produced via an alternative pathway of tryptophan metabolism. In vitro, 3-HKA has an anti-inflammatory profile by inhibiting the IFN-γ mediated STAT1 NF-κΒ pathway in both mouse and human dendritic cells (DCs) with a consequent decrease in the release of pro-inflammatory chemokines and cytokines, most notably TNF, IL-6, and IL12p70. 3-HKA has protective effects in an experimental mouse model of psoriasis by decreasing skin thickness, erythema, scaling and fissuring, reducing TNF, IL-1β, IFN-γ, and IL-17 production, and inhibiting generation of effector CD8+ T cells. Similarly, in a mouse model of nephrotoxic nephritis, besides reducing inflammatory cytokines, 3-HKA improves proteinuria and serum urea nitrogen, overall ameliorating immune-mediated glomerulonephritis and renal dysfunction.This compound is unstable in powder form and other related salt forms are recommended.

IRBP651-670（Interphotoreceptor retinoid-binding protein (651-670)）是IRBP（亦称为retinoid-binding protein 3）的肽段，参与色素再生，通过将视黄醇和视黄醛从光感受细胞传输到视网膜色素上皮。在C57BL 6小鼠中，利用IRBP651-670诱导自身免疫性葡萄膜炎，这些小鼠携带H-2b单体型。用IRBP651-670（300 µg 动物）免疫增加了小鼠眼部IL-1β、IL-6、IL-17、TNF-α和IFN-γ水平，免疫细胞浸润及光感受器损伤。

1beta-Hydroxyalantolactone 是从药用植物大英花的花头中分离出的小分子化合物，可抑制细胞中TNF-α、IL-17、IFN-γ的表达，促进TNF-α、IFN-γ、IL-17的分泌，可防治类风湿性关节炎。

AKP-11 is a sphingosine-1-phosphate receptor 1 (S1P1) agonist with an EC50 of 0.047 μM for [35S]GTPγS binding to CHO-K1 cell membranes expressing human S1P1. It reduces S1P1 surface expression and enhances Akt and ERK phosphorylation in CHO cells with S1P1-HA at a 100 nM concentration. At doses of 1.3 and 3 mg kg, AKP-11 lowers IFN-γ and IL-17 protein levels in the spinal cord and mitigates disease severity in a rat experimental autoimmune encephalomyelitis (EAE) model. Additionally, it decreases peripheral total lymphocyte and specific T cell subsets (CD4+, CD8+, and CD26L+ T cells) counts in both EAE rats and healthy controls at a 1.3 mg kg dosage.