1. Signaling Pathways
  2. Immunology/Inflammation
  3. Toll-like Receptor (TLR)

Toll-like Receptor (TLR)

Toll-like receptors (TLRs) are a class of proteins that play a key role in the innate immune system. They are single, membrane-spanning, non-catalytic receptors usually expressed in sentinel cells such as macrophages and dendritic cells, that recognize structurally conserved molecules derived from microbes. Once these microbes have breached physical barriers such as the skin or intestinal tract mucosa, they are recognized by TLRs, which activate immune cell responses. The TLRs include TLR1, TLR2, TLR3, TLR4, TLR5, TLR6, TLR7, TLR8, TLR9, TLR10, TLR11, TLR12, and TLR13. Toll-Like Receptors (TLRs) play a critical role in the early innate immune response to invading pathogens by sensing microorganism and are involved in sensing endogenous danger signals. TLRs are evolutionarily conserved receptors are homologues of the Drosophila Toll protein, discovered to be important for defense against microbial infection. TLRs recognize highly conserved structural motifs known as pathogen-associated microbial patterns (PAMPs), which are exclusively expressed by microbial pathogens.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-103698A
    TLR7/8 agonist 1 dihydrochloride
    Agonist 99.70%
    TLR7/8 agonist 1 dihydrochloride is a toll-like receptor TLR7/TLR8 dual-agonistic imidazoquinoline.
    TLR7/8 agonist 1 dihydrochloride
  • HY-B0730
    Pamidronate disodium pentahydrate
    Antagonist ≥98.0%
    Pamidronate disodium pentahydrate, the second-generation nitrogen-containing bisphosphonate, is an inhibitor of bone loss. Pamidronate disodium pentahydrate significantly inhibits subchondral bone loss in early osteoarthritis by upregulating the expression of osteoprotegerin in cartilage and subchondral bone, and inhibiting the expression of RANKL and MMP-9 in both tissues, as well as TLR-4 in cartilage, thereby alleviating cartilage degeneration. Additionally, Pamidronate disodium pentahydrate can inhibit the signaling of Wnt and β-catenin, and is applicable for research on osteoporosis and osteosarcoma.
    Pamidronate disodium pentahydrate
  • HY-20457
    TL8-506
    Agonist
    TL8-506 is a specific TLR8 agonist with an EC50 of 30 nM. TL8-506 has immunomodulatory effects and can be used in the study of tuberculosis and cancer immunotherapy.
    TL8-506
  • HY-17367A
    Atazanavir sulfate
    Inhibitor 99.87%
    Atazanavir (BMS-232632) sulfate is a highly selective and orally active HIV-1 protease inhibitor . Atazanavir sulfate is a substrate and inhibitor of CYP3A4, and an inhibitor of P-glycoprotein (P-gp). Atazanavir sulfate is also a SARS-CoV 3CLpro inhibitor with an IC50 of 3.49 μM. Atazanavir sulfate inhibits cardiac fibrosis, hyperlipidemia and induces malignant glioma death.
    Atazanavir sulfate
  • HY-150751C
    ODN TTAGGG sodium
    Antagonist
    ODN TTAGGG sodium, inhibitory oligonucleotide (ODN), is a TLR9, AIM2 and cGAS antagonist. ODN TTAGGG sodium is immunosuppressive and inhibits AIM2 inflammasome activation, as well as cGAS activation, by competing with DNA. ODN TTAGGG sodium can be used in the study of lupus erythematosus and other related autoimmune diseases. ODN TTAGGG sequence: 5'-T-T-A-G-G-G-T-T-A-G-G-G-T-T-A-G-G-G-T-T-A-G-G-G-3'.
    ODN TTAGGG sodium
  • HY-112667
    CU-CPT-9a
    Antagonist 99.74%
    CU-CPT-9a is a specific TLR8 antagonist, with an IC50 of 0.5 nM.
    CU-CPT-9a
  • HY-135748A
    Poly (I:C):Kanamycin (1:1) (sodium)
    Agonist
    Poly (I:C):Kanamycin (1:1) sodium is an isometric complex of Poly (I:C) (HY-135748) and Kanamycin (HY-16566). Poly(I:C) sodium, a synthetic analog of double-stranded RNA, is a TLR3 and retinoic acid-inducible gene I receptor (RIG-I and b>MDA5) agonist. Poly(I:C) sodium can be used as a vaccine adjuvant to enhance innate and adaptive immune responses and induce apoptosis in cancer cells. Kanamycin is an orally active antibacterial agent (Gram-negative/positive bacteria) that inhibits translocation and causes miscoding by binding to the 70S ribosomal subunit. Kanamycin shows good inhibitory activity against Mycobacterium tuberculosis (susceptible and drug-resistant) and Klebsiella pneumoniae, and can be used in the research of tuberculosis and pneumonia.
    Poly (I:C):Kanamycin (1:1) (sodium)
  • HY-108472
    Loxoribine
    Agonist 99.66%
    Loxoribine (7-Allyl-8-oxoguanosine) is a guanosine analog with anti-viral and anti-tumor activities. Loxoribine is an orally bioavailable and selective Toll-like receptor (TLR) 7 agonist.
    Loxoribine
  • HY-P99008
    Atibuclimab
    Inhibitor 99.06%
    Atibuclimab (IC14), is a chimeric monoclonal antibody directed against CD14 and is composed of murine variable and human IgG4 Fc regions. Atibuclimab attenuates Lipopolysaccharides (HY-D1056) (LPS)-induced symptoms and strongly inhibits LPS-induced proinflammatory cytokine release, while only delaying the release of the anti-inflammatory cytokines soluble TNF receptor type I and IL-1 receptor antagonist. Atibuclimab can be used for the research of amyotrophic lateral sclerosis, sepsis, community-acquired pneumonia, or acute lung injury.
    Atibuclimab
  • HY-124750
    NecroX-7
    Inhibitor 99.69%
    NecroX-7 is a potent free radical scavenger and a HMGB1 (high-mobility group box 1) inhibitor. NecroX-7 can be used as an antidote to acetaminophen toxicity. NecroX-7 exerts a protective effect by preventing the release of HMGB1 in ischemia/reperfusion injury. NecroX-7 inhibits the HMGB1-induced release of TNF and IL-6, as well as the expression of TLR-4 and receptor for advanced glycation end products. NecroX-7 can be used graft-versus-host disease (GVHD) research.
    NecroX-7
  • HY-150748A
    ODN D-SL01 sodium
    99.94%
    ODN D-SL01 sodium, a class B CpG ODN (oligodeoxynucleotide), is a TLR9 agonist. ODN D-SL01 sodium has strong immunostimulatory activity in a variety of vertebrate species and has anticancer activity. ODN D-SL01 sequence: 5'- T-C-G-C-G-A-C-G-T-T-C-G-C-C-C-G-A-C-G-T-T-C-G-G-T-A-3'.
    ODN D-SL01 sodium
  • HY-103697A
    Gardiquimod diTFA
    ≥99.0%
    Gardiquimod diTFA is an imidazoline TLR7/8 agonist. Gardiquimod diTFA inhibits HIV-1 infection of macrophages and activated peripheral blood mononuclear cells (PBMCs). Gardiquimod diTFA specifically activates TLR7 at concentrations below 10 μM.
    Gardiquimod diTFA
  • HY-103483
    MD2-IN-1
    Inhibitor 99.88%
    MD2-IN-1 is an inhibitor of Myeloid differentiation protein 2 (MD2) with a KD of 189 μM for the recombinant human MD2 (rhMD2).
    MD2-IN-1
  • HY-131952
    TLR7/8/9-IN-1
    Antagonist 98.51%
    TLR7/8/9-IN-1 is a potent and orally bioavailable small molecule antagonist (IC50 = 43 nM) of Toll-like receptors 7/8/9 (TLR7/8/9).
    TLR7/8/9-IN-1
  • HY-130320
    Monophosphoryl lipid A
    Agonist ≥99.0%
    Monophosphoryl lipid A (Glucopyranosyl lipid A) is a toll-like receptor 4 agonist. Monophosphoryl lipid A is derived from the cell wall of nonpathogenic Salmonella. Monophosphoryl lipid A can be used for the research of immunization and vaccine.
    Monophosphoryl lipid A
  • HY-W092043
    TLR4-IN-C34-C2-COOH
    Inhibitor 99.94%
    TLR4-IN-C34-C2-COOH is a linker that incorporates TLR4 inhibitor TLR4-IN-C34 (HY-107575). TLR4-IN-C34 inhibits TLR4 in enterocytes and macrophages, and reduces systemic inflammation in mouse models of endotoxemia and necrotizing enterocolitis.
    TLR4-IN-C34-C2-COOH
  • HY-B0012
    Pamidronic acid
    Inhibitor 99.05%
    Pamidronic acid, the second-generation nitrogen-containing bisphosphonate, is an inhibitor of bone loss. Pamidronic acid significantly inhibits subchondral bone loss in early osteoarthritis by upregulating the expression of OPG in cartilage and subchondral bone, and inhibiting the expression of RANKL and MMP-9 in both tissues, as well as TLR-4 in cartilage, thereby alleviating cartilage degeneration. Additionally, Pamidronic acid can inhibit the signaling of Wnt and β-catenin, and is applicable for research on osteoporosis and osteosarcoma.
    Pamidronic acid
  • HY-N0726
    Dracorhodin perchlorate
    Modulator 99.14%
    Dracorhodin perchlorate (Dracohodin perochlorate) is a natural product. Dracorhodin perchlorate can be obtained from the natural active molecule Dragon's blood. Dracorhodin perchlorate inhibits PI3K/Akt and NF-κB activation, upregulates p53 expression, activates caspase, produces ROS, and promotes Apoptosis. Dracorhodin perchlorate regulates the TLR4. Dracorhodin perchlorate promotes wound healing, improves diabetes. Dracorhodin perchlorate has anti-tumor activity against prostate cancer, breast cancer, cervical cancer and other cancers.
    Dracorhodin perchlorate
  • HY-12756
    E6446
    Antagonist ≥98.0%
    E6446 is a potent and orally acitve TLR7 and TLR9 antagonist, used in the research of deleterious inflammatory responses. E6446 is also a potent SCD1 inhibitor (KD: 4.61 μM), significantly inhibiting adipogenic differentiation and hepatic lipogenesis through SCD1-ATF3 signaling. E6446 also improves liver pathology in high-fat diet (HFD)-fed mice and may be useful in the study of non-alcoholic fatty liver disease (NAFLD).
    E6446
  • HY-153808B
    Complete Freund's adjuvant (CFA, 1 mg/ml)
    Complete Freund's adjuvant (CFA, 1 mg/ml) is an immunoadjuvant emulsified with antigen that can enhance an animal's immune response to an antigen. Complete Freund's adjuvant (CFA, 1 mg/ml) is also an inducer of the Th1 immune response and a ligand of TLRs. Complete Freund's adjuvant (CFA, 1 mg/ml) contains heat-killed inactive tuberculosis bacilli and consists of a paraffin oil-in-water emulsion. Complete Freund's adjuvant (CFA, 1 mg/ml) stimulates a strong and durable immune response and can be used to induce rheumatoid arthritis in rats, and more.
    Complete Freund's adjuvant (CFA, 1 mg/ml)
Cat. No. Product Name / Synonyms Species Source
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