Toll-like Receptor (TLR) Inhibitor

Paridiprubart (WT IgG1) (NI-0101) is a humanised anti-TLR4 monoclonal antibody. Paridiprubart (WT IgG1) inhibits the production of pro-inflammatory cytokines by monocytes from rheumatoid arthritis specimen induced by rheumatoid arthritis synovial fluid (RASF). Paridiprubart (WT IgG1) can be used for the study of rheumatoid arthritis.

L6H21, a Chalcone (HY-121054) derivative, is an orally active, potent and specific myeloid differentiation 2 (MD-2) inhibitor. L6H21 directly binds to MD-2 protein with a high affinity and low K_D value of 33.3 μM, blocking the formation of the LPS-TLR4/MD-2 complex. L6H21 inhibits LPS-induced expression of TNF-α and IL-6 in RAW264.7 macrophages, with IC₅₀ values of 6.58 and 8.59 μM, respectively. L6H21 can be used for alcoholic liver disease, metabolic disturbance and neuroinflammation research.

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.

Kaempferol 3-O-sophoroside is an orally active derivative of Kaempferol. It exhibits anti-inflammatory, analgesic, and antidepressant effects. Kaempferol 3-O-sophoroside is an inhibitor of the cell surface receptor toll-like receptor (TLR) 2/4 for High mobility group box 1 (HMGB1), and it also exerts anti-inflammatory effects by blocking the activation of NF-κB expression and the production of TNF-α. Kaempferol 3-O-sophoroside promotes the production of brain-derived neurotrophic factor (BDNF) and enhances autophagy by binding to AMP-activated protein kinase (AMPK), thereby exerting antidepressant effects. Kaempferol 3-O-sophoroside holds promise for research in the fields of inflammation and neurodegenerative diseases.

Ecliptasaponin A is an orally active pentacyclic triterpenoid saponin. Ecliptasaponin A exerts anti-tumor activity by activating ASK1/JNK pathway, inducing apoptosis and autophagy in lung cancer cells. Ecliptasaponin A exerts anti-inflammatory/anti-fibrotic effects and protects the cardiovascular system by inhibiting the HMGB1/TLR4/NF-κB pathway, and the expression of COX-2 and MMP-9. Ecliptasaponin A can enhance SOD activity, reduce MDA levels, and alleviate oxidative stress damage. Ecliptasaponin A exerts chondroprotective effects by inhibiting the expression of MMP13 and regulating inflammatory factors. Ecliptasaponin A improves ovarian function and regulates sex hormones by upregulating the expression of ESR1 receptors.

Nalmefene is a BBB-penetrable opioid receptor modulator. Nalmefene is an antagonist of MOR and DOR, and a partial agonist of KOR. Nalmefene has anti-inflammatory and neuroprotective activities. Nalmefene can be used in the research of reducing alcohol-dependent disorders.

Chymotrypsin (EC 3.4.21.1; Chymotrypsin A) (MS grade) is an orally effective inhibitor targeting molecules such as TLR4, NF-κB, MMP-1, TNF-α, IL-1β, and IL-6. Chymotrypsin (MS grade) downregulates the TLR4/NF-κB signaling pathway, inhibits the release of inflammatory factors, reduces cell infiltration and tissue damage, and also reduces the expression of tumor cell adhesion molecules (such as CD44 and CD54). It can also be specifically detected by fluorescent probes (such as NBD-3). Chymotrypsin (MS grade) has anti-inflammatory, hepatoprotective, joint damage-reducing, liver protection against lipotoxicity, and anti-tumor metastasis functions, and can be used in the research of diseases such as rheumatoid arthritis, non-alcoholic fatty liver disease, and melanoma metastasis. Chymotrypsin (MS grade) can be used in studies of inflammation, edema, and expectoration.

Hydroxychloroquine (sulfate) (Standard) is the analytical standard of Hydroxychloroquine (sulfate). This product is intended for research and analytical applications. Hydroxychloroquine sulfate (HCQ sulfate) is a synthetic antimalarial agent which can also inhibit Toll-like receptor 7/9 (TLR7/9) signaling. Hydroxychloroquine sulfate is efficiently inhibits SARS-CoV-2 infection in vitro.

Methylprednisolone succinate (Methylprednisolone hydrogen succinate) is a prodrug of Methylprednisolone (HY-B0260) and glucocorticoid with immunosuppressant and anti-inflammatory activity. Methylprednisolone succinate binds cytosolic glucocorticoid receptors, translocates to nuclei, and modulates target gene transcription. Methylprednisolone succinate alters Bax, Bcl-2, occludin, and ZO-1 expression; attenuates TLR4/NF-κB signaling; suppresses proinflammatory cytokine production and immune cell activation. Methylprednisolone succinate can be used for the research of intracranial haemorrhage, rheumatoid arthritis, multiple sclerosis, preterminal cancer, inflammatory conditions, shock, immediate-type hypersensitivity, acute myocardial ischemia, hypoxic heart muscle damage, and traumatic spinal cord injury.

Anti-Dectin-1 Antibody (2M24) is a humanized IgG1 monoclonal antibody that targets Dectin-1. Recommend Isotype Controls: Human IgG1 kappa, Isotype Control (HY-P99001).

β-Funaltrexamine (β-FNA) hydrochloride is a blood-brain barrier-permeable, selective and irreversible μ-opioid receptor antagonist with immunomodulatory, anti-inflammatory and neuroprotective activities. β-Funaltrexamine hydrochloride inhibits p38 MAPK and TLR4 signaling by blocking μ-opioid receptors, and reduces the transcriptional activities of NF-κB, AP-1, CREB and Stat. Furthermore, β-Funaltrexamine hydrochloride inhibits iNOS activation and pro-inflammatory microglial polarization, converting microglia to an anti-inflammatory phenotype, thereby downregulating neuroinflammation and ameliorating neuronal degeneration. β-Funaltrexamine hydrochloride is widely applicable to research related to stroke, cerebral ischemia/reperfusion injury and neurodegenerative diseases.

Polygalasaponin F is an orally active triterpenoid saponin monomer. Polygalasaponin F downregulates the expression of Bax, p53, caspase-3, NF-κB p65 and MEK1; restores and upregulates the expression of Bcl-2; activates the PI3K/Akt signaling pathway; inhibits the phosphorylation of p38 MAPK, nuclear translocation of NF-κB, TLR4-mediated signaling pathway, mitophagy (Mitophagy) and ROS production; enhances cell viability and suppresses apoptosis (Apoptosis). Polygalasaponin F maintains mitochondrial function, alleviates Ca²⁺ overload, upregulates pCREB and BDNF, preserves cell viability and inhibits the release of inflammatory cytokines. Polygalasaponin F alleviates lung injury induced by influenza A H1N1 and cerebral ischemia-reperfusion injury. Polygalasaponin F is applicable to researches related to Parkinson's disease, cerebral ischemia, pneumonia induced by influenza A H1N1, stroke and Alzheimer's disease.

Poseltinib (HM71224) is an orally active, selective, irreversible small molecule Bruton tyrosine kinase (BTK) inhibitor. With an IC₅₀ of 1.95 nM. Poseltinib effectively inhibits the signaling mediated by B cell receptors (BCR), Fc receptors (FcR), and Toll-like receptors (TLR). Poseltinib has anti-inflammatory activity and can be used in the research of rheumatoid arthritis.

Vidutolimod sodium is a CpG-A oligodeoxynucleotide. Vidutolimod sodium is a Toll-like receptor 9 (TLR9) agonist, which activates plasmacytoid dendritic cells (pDCs) and triggers interferon alpha (IFNα) release, leading to a cascade of anti-tumor immune effects.

Balcinrenone (AZD9977) is an orally active mineralocorticoid receptor modulator. Balcinrenone regulates mineralocorticoid receptor activity, inhibits aldosterone-induced target gene expression, and suppresses the activities of renal Toll-like receptor 4, MyD88 and NF-κB. Balcinrenone alleviates renal extracellular matrix remodeling, inflammatory cell infiltration, and the expression of renal injury markers. Balcinrenone restores myocardial perfusion reserve, regulates potassium homeostasis, and induces fecal potassium excretion. Balcinrenone is applicable to research on metabolism-related chronic kidney disease and heart failure.

ODN INH-18 sodium is a linear 24-mer class B INH-ODN in which the 5' INH-ODN 4084-F sequence was followed by a random stretch of 12 nucleotides lacking the ability to form significant secondary structures. ODN INH-18 sodium showes inhibitory potency for TLR9 ligand-induced IFN-α production.

Atractyloside A is an orally active inhibitor of the TLR4/MyD88/NF-κB signaling pathway and also an opener of the mitochondrial permeability transition pore (MPTP). Atractyloside A interferes with the activation of the TLR4/MyD88/NF-κB pathway, thereby inhibiting intestinal inflammatory responses. Atractyloside A reverses mucin synthesis impairment, improves intestinal barrier integrity, and restores homeostasis by altering the composition of the gut microbiota. Atractyloside A can be used in studies related to spleen deficiency diarrhea and myocardial injury.

Astringin (trans-Astringin) is an orally active natural phenolic stilbene glucoside. Astringin can inhibit the production of oxidative stress, inflammatory factors, etc. Astringin has multiple activities such as anti-oxidation, anti-inflammation, and anti-apoptosis. Astringin is also an inhibitor of ferroptosis. Astringin can be used in the research of diseases such as acute lung injury.

Trimebutine is a multi-target inhibitor and opioid receptor agonist with antimuscarinic activity. Trimebutine inhibits L-type Ca²⁺ channels and large-conductance calcium-activated potassium channels (BK_Ca channels), thereby inhibiting extracellular calcium influx and potassium ion efflux. Trimebutine also targets Toll-like receptors, inhibits Toll-like receptor 2/4/7/8/9 signals, and inhibits LPS-induced IRAK1 activation, as well as ERK1/2, JNK and NF-κB activation, thereby exerting anti-inflammatory effects. Trimebutine also induces tumor cell apoptosis by inhibiting the AKT/ERK pathway. Trimebutine also inhibits excessive contraction of smooth muscle and can be used in the study of gastrointestinal disorders such as irritable bowel syndrome (IBS).

Phoenixin-20 (PNX-20) is a neuropeptide that activates GPR173. Phoenixin-20 inhibits LPS-induced TLR-4/MyD88/NF-κB signaling, pro-inflammatory cytokines, adhesion molecules, MMPs, and cytotoxicity. Phoenixin-20 increases SIRT1 and inhibits NLRP3/ASC/caspase-1, oxidative stress, and IL-1β/IL-18. Phoenixin-20 alleviates ox-LDL-induced endothelial dysfunction, monocyte adhesion, adhesion molecules, cytokines, NADPH oxidase/NOX-4, and ROS. Phoenixin-20 promotes GPR173/STAT6-mediated anti-inflammatory polarization of microglia and neuroprotection. Phoenixin-20 can be used in research on dental pulp infection, pulmonary arterial hypertension, atherosclerosis, neuroinflammation, anxiety, and neurodegenerative diseases.