tlr7/8 agonist 1

TLR7/8 agonist 1 dihydrochloride (TLR7/8 agonist-5d) is a TLR7/8 agonist which shows prominent immunostimulatory activities.

TLR7/8 agonist 1 is a toll-like receptor TLR7/TLR8 agonist with anticancer and antiviral activities and can be used to study immune-related diseases.

TLR7/8 agonist 11 (compound 30) serves as a powerful agonist for hTLR7 and hTLR8, exhibiting EC50 values of 31.1 nM and 13.1 nM, respectively. This compound is crucial in the functioning of both adaptive and innate immune responses.

TLR7/8 agonist 12 (compound 9) is a human TLR7/8 agonist with EC50 values of 11 nM for hTLR7 and 150 nM for hTLR8, indicating its potential for immune modulation.

TLR7/8 agonist 12-PAB-(PEG4-Me)-Cit-Val-PEG2-amide-C2-MC (compound LIV1-IMC (12) linker-payload) serves as a linker-payload conjugate designed for the synthesis of antibody-drug conjugates (ADCs). This structure incorporates a TLR7/8 agonist (ADC payload) along with a linker.

TLR7/8 agonist 13 is an orally active dual agonist of TLR7 (with a lowest effective concentration (LEC) [hTLR7] of 1.6 μM) and TLR8 (LEC [hTLR8] of 1.6 μM). It acts on human peripheral blood mononuclear cells (hPBMC) with agonistic activity (LEC [hPBMC] = 0.5 μM). In mice and cynomolgus monkeys, TLR7/8 agonist 13 induces endogenous IFNα, activates myeloid dendritic cells and monocytes, promoting their differentiation towards a TH1 phenotype. In chronic AAV-HBV mouse models, it reduces viral load and HBV surface antigen levels. TLR7/8 agonist 13 has the potential to indirectly induce IFNγ, facilitating the response of HBV antigen-specific CD8 T cells. This compound is useful for hepatitis B virus research.

TLR7/8 agonist 14 is a dual-target agonist of TLR7 and TLR8, with EC50 values of 75 μM for TLR7 and 96 μM for TLR8. This compound enhances the secretion of pro-inflammatory cytokines TNF-α, IL-1β, IL-8, and IFN-γ, while also increasing cytokine secretion and CD86 expression levels. TLR7/8 agonist 14 is applicable in colorectal cancer research.

D18 is an immune modulator that acts as a dual agonist for TLR7/8 (with EC50 values of 24 nM for hTLR7 and 10 nM for hTLR8, respectively). It enhances the expression of PD-L1 through epigenetic regulation, thereby increasing the sensitivity of tumors to PD-1/PD-L1 blockade. Additionally, D18 functions as a cytotoxin for ADC synthesis, specifically for the ADC HE-S2 [1].

3M-011, a potent dual toll-like receptor TLR7/8 agonist and cytokine inducer, serves as a powerful adjuvant to radiotherapy, eliciting significant local and systemic immune responses. Additionally, it effectively inhibits H3N2 influenza viral replication in the nasal cavity and exhibits strong antitumor activity[1][2][3].

Gardiquimod is a TLR7/8 agonist. When used at concentrations below 10 μM, Gardiquimod specifically activates TLR7. Gardiquimod could inhibit HIV-1 infection of macrophages and activated peripheral blood mononuclear cells.

Gardiquimod (hydrochloride) is an imidazoquinoline class TLR7/8 agonist. It can inhibit HIV-1 infection in macrophages and activated peripheral blood mononuclear cells (PBMCs). At concentrations below 10 μM, Gardiquimod (hydrochloride) specifically activates TLR7.

Gardiquimod diTFA, an imidazoquinoline analog and TLR7/8 agonist, inhibits HIV-1 infection of macrophages and activated peripheral blood mononuclear cells (PBMCs), and specifically activates TLR7 at concentrations below 10 μM. As an immune system modifier and reverse transcriptase inhibitor, it serves as a novel therapeutic agent to block systemic and mucosal transmission of HIV-1.[1][2]

TLR7/8 agonist 4 (compound 41) is a potent TLR7/8 agonist with demonstrated anti-cancer activity [1].

TLR7/8 antagonist 2 (Compound 15) is a highly potent and orally active agonist of TLR7/8 with IC50 values of 4.9 nM for TLR7 and 0.6 nM for TLR8, making it a promising candidate for treating and investigating autoimmune diseases like lupus erythematosus, which involves inappropriate activation of TLR7 and TLR8. Consequently, TLR7/8 antagonist 2 is a valuable tool for autoimmune disease research [1].

TLR7/8 Antagonist 1 (Compound 16c), an imidazoquinoline derivative, is a potent TLR7/8 agonist with IC50 values of 3.91 and 2.19 μM for TLR7 and TLR8, respectively. rel-O-2050 (TLR-2050) is a key target for drug development in infectious diseases, cancer, and autoimmune diseases.

TLR7/8 agonist 4 hydroxy-PEG6-acid hydrochloride, a Drug-Linker Conjugate for ADC synthesis, is the hydrochloride variant of TLR7/8 agonist 4 hydroxy-PEG6-acid, with the TLR7/8 agonist 4 component attached to the hydroxy-PEG6-acid linker [1].

TLR7/8 agonist 8 (compound 24m) is a potent dual agonist for toll-like receptors 7 and 8 (TLR7/8), exhibiting half-maximal effective concentrations (EC50s) of 27 nM for human TLR7 (hTLR7) and 12 nM for human TLR8 (hTLR8). This compound enhances the efficacy of PD-1/PD-L1 inhibitors in antitumor activity [1].

TLR7/8 agonist 9 (Compound 25a), with EC50 values of 40 nM for hTLR7 and 23 nM for hTLR8, demonstrates anti-tumor properties and enhances the efficacy of PD-1/PD-L1 blockade treatments, making it valuable for cancer immunotherapy research [1].

TLR7/8 agonist 4 hydroxy-PEG6-acid, a drug-linker conjugate for antibody-drug conjugates (ADCs), comprises the TLR7/8 agonist 4 and a hydroxy-PEG6-acid linker, suitable for ADC synthesis [1].

NCI 126224 is a Toll-like receptor 4 (TLR4) antagonist that selectively inhibits nitric oxide production induced by the TLR4 agonist LPS in RAW 264.7 macrophages (IC50 = 0.31 µM), while exhibiting weaker effects against the TLR7/8 agonist R-848, TLR1/2 agonist Pam3CSK4, and TLR3 agonist poly(I:C). NCI 126224 also inhibits FSL-1-induced NO production at 0.6 µM and suppresses LPS-induced NF-κB activity in BV-2 glial cells, while reducing IL-1β and TNF-α levels in RAW 264.7 cells (IC50s of 5.92 and 1.54 µM, respectively). 0.42, and 1.54 µM, respectively), demonstrating its significant value in studies of inflammatory and innate immune signaling pathways.

ORN 06 (Compound R-0006) is a U-rich single-stranded RNA containing 6 repeats of the UUG sequence motif, and it functions as a TLR7/8 agonist. This compound stimulates human TLR7/8-mediated or murine TLR7-mediated immunity [1].