MyD88 Activator

ssRNA40 sodium (R-1075 sodium) is a single-stranded RNA40 derived from HIV-1. ssRNA40 sodium activates the TLR7, TLR8, TLR2, RIG-I, MDA5, MyD88, Caspase-3, IRE1α, NLRP3 inflammasome and IRF7 signaling pathways. ssRNA40 sodium alters mRNA expression in neutrophils, induces pro-inflammatory cytokines, ROS, autophagy (autophagy), pyroptosis (pyroptosis), neuronal death, neurodegeneration, aggregate formation and NK cell activation. ssRNA40 sodium activates the expression of CD62L, CD11b, CD69, MX1, OAS1, ATG7, LC3B and XBP1 in immune cell and neuronal populations. ssRNA40 sodium causes cortical neuron loss and axonal damage in mice in a TLR7-dependent manner. ssRNA40 sodium can be used in research on HIV-1 infection, neurodegeneration, COVID-19 and HIV-associated neurological disorders.

Flagellin from S. typhimurium is a potent TLR5 agonist. Flagellin from S. typhimurium activates immune cells and inhibits the activity of melanoma cells. Flagellin from S. typhimurium activates the NF-κB pathway dependent on the TLR5/MyD88/TRAF6 signaling axis in cells. Flagellin from S. typhimurium induces a proinflammatory response in the primary chicken hepatocyte-nonparenchymal cell co-culture system by promoting IL-8 production, inhibiting IL-10 production, and increasing the IFN-γ/IL-10 ratio. Flagellin from S. typhimurium can be used for research on melanoma and inflammatory diseases.

SMU-C409 is a TLR1/2 agonist with an EC₅₀ of 65 nM in HEK-Blue hTLR2 Cells. SMU-C409 activates the TLR1/2–MyD88–NF-κB pathway, inducing TNF-α/IL-1β secretion and robust immune cell activation for antitumor immunomodulation. SMU-C409 shows low toxicity in virto. SMU-C409 can be used for cancer immunotherapy research.

CRX 527 is a TLR4 agonist. CRX 527 activates the MyD88-dependent, TRIF-dependent, and TRAF6/NF-κB signaling pathways downstream of TLR4, mimics lipid A, and regulates antigen processing and presentation by dendritic cells. CRX 527 stimulates innate immune responses and enhances vaccine efficacy. CRX 527 maintains the structural integrity of hematopoietic tissues, spleen and intestine, alleviates radiation-induced damage, preserves intestinal homeostasis, and inhibits apoptosis, inflammatory responses, oxidative stress and DNA damage. CRX 527 can be used in the research of acute radiation syndrome, melanoma, HPV-related tumors and intracerebral hemorrhage.

SMU-L11-R is a selective TLR7 agonist with an EC₅₀ of 0.012 μM for human TLR7. SMU-L11-R specifically activates TLR7, recruits  MyD88, and triggers MAPK/NF-κB pathways, leading to TNF-α/IL-1β/IL-6 secretion in both mouse and human peripheral blood mononuclear cells. SMU-L11-R promotes M1-like macrophage polarization. SMU-L11-R exhibits excellent synergistic anti-tumor effects with PD-L1 inhibitors by upregulating CD8⁺T cells. SMU-L11-R shows potential in colorectal cancer studies.