1. Signaling Pathways
  2. Apoptosis
  3. TNF Receptor

TNF Receptor

Tumor Necrosis Factor Receptor; TNFR

Tumor necrosis factor (TNF) is a major mediator of apoptosis as well as inflammation and immunity, and it has been implicated in the pathogenesis of a wide spectrum of human diseases, including sepsis, diabetes, cancer, osteoporosis, multiple sclerosis, rheumatoid arthritis, and inflammatory bowel diseases.

TNF-α is a 17-kDa protein consisting of 157 amino acids that is a homotrimer in solution. In humans, the gene is mapped to chromosome 6. Its bioactivity is mainly regulated by soluble TNF-α–binding receptors. TNF-α is mainly produced by activated macrophages, T lymphocytes, and natural killer cells. Lower expression is known for a variety of other cells, including fibroblasts, smooth muscle cells, and tumor cells. In cells, TNF-α is synthesized as pro-TNF (26 kDa), which is membrane-bound and is released upon cleavage of its pro domain by TNF-converting enzyme (TACE).

Many of the TNF-induced cellular responses are mediated by either one of the two TNF receptors, TNF-R1 and TNF-R2, both of which belong to the TNF receptor super-family. In response to TNF treatment, the transcription factor NF-κB and MAP kinases, including ERK, p38 and JNK, are activated in most types of cells and, in some cases, apoptosis or necrosis could also be induced. However, induction of apoptosis or necrosis is mainly achieved through TNFR1, which is also known as a death receptor. Activation of the NF-κB and MAPKs plays an important role in the induction of many cytokines and immune-regulatory proteins and is pivotal for many inflammatory responses.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-W012732
    Isoquinoline
    Inhibitor 99.58%
    Isoquinoline is an analog of pyridine. Isoquinoline-based alkaloids, such as p-tolyl bisisoquinoline, phthaloyl isoquinoline, and naphthyl isoquinoline, exhibit anticancer activity. Berberine, an isoquinoline alkaloid, exerts anti-inflammatory effects in diabetic mice by downregulating the gene expression ratios of pro-/anti-inflammatory and Th1/Th2 cytokines. Additionally, some isoquinoline-based compounds also possess antidepressant, antibacterial, antimalarial, and anti-HIV activities.
    Isoquinoline
  • HY-100735
    C 87
    Inhibitor 98.06%
    C 87 is a novel small-molecule TNFα inhibitor; potently inhibits TNFα-induced cytotoxicity with an IC50 of 8.73 μM.
    C 87
  • HY-P99167
    Lucatumumab
    Inhibitor ≥99.0%
    Lucatumumab (HCD122) is a fully human anti-CD40 antagonist monoclonal antibody, which blocks CD40/CD40L-mediated signaling. Lucatumumab efficiently mediates antibody-dependent cell-mediated cytotoxicity (ADCC) and clearance of tumor cells, can be used for refractory lymphomas, CLL and multiple myeloma research.
    Lucatumumab
  • HY-P99249
    Vonlerolizumab
    Inhibitor 99.70%
    Vonlerolizumab (MOXR 0916) is a humanized IgG agonistic monoclonal OX40-specific antibody. Vonlerolizumab can be used for the research of cancer.
    Vonlerolizumab
  • HY-118250
    GSK2245035
    Activator 99.85%
    GSK2245035 is a highly potent and selective intranasal Toll-Like receptor 7 (TLR7) agonist with preferential Type-1 interferon (IFN)-stimulating properties. GSK2245035 has pEC50s of 9.3 and 6.5 for IFNα and TFNα. GSK2245035 effectively suppresses allergen-induced Th2 cytokine production in human peripheral blood cell cultures. GSK2245035 is used for asthma.
    GSK2245035
  • HY-W040045
    Callistephin chloride
    Inhibitor 98.02%
    Callistephin (Pelargonidin 3-O-glucoside) chloride is an anthocyanin. Callistephin chloride regulates the expression of inflammatory (reducing iNOS/TNF-α/COX-2) and apoptosis-related proteins by inhibiting p38 phosphorylation, and enhances the protective effect of Isoflurane (HY-A0134) on microglial cell damage. Callistephin chloride significantly reduces ROS levels, eliminates DPPH free radicals, protects retinal pigment epithelial cells, and inhibits lipid peroxidation. Callistephin chloride can alleviate glutamate excitotoxicity, reduce neuronal apoptosis, and protect cerebellar granule neurons. Callistephin chloride can inhibit the proliferation and metastasis of breast cancer cells by inducing apoptosis.
    Callistephin chloride
  • HY-15643A
    LY 303511 hydrochloride
    Activator 98.87%
    LY 303511 hydrochloride is a structural analogue of LY294002. LY303511 does not inhibit PI3K. LY303511 enhances TRAIL sensitivity of SHEP-1 neuroblastoma cells. LY303511 reversibly blocks K+ currents (IC50=64.6±9.1 μM) in MIN6 insulinoma cells.
    LY 303511 hydrochloride
  • HY-19929
    Tanimilast
    Antagonist 99.49%
    Tanimilast (CHF-6001) is an orally active and selective phosphodiesterase 4 inhibitor (IC50=0.026 nM) with robust anti-inflammatory activity and suitable for topical pulmonary administration. Tanimilast increases cellular cAMP levels, and inhibits NF-κB signaling pathway. Tanimilast is used for the research of obstructive lung diseases.
    Tanimilast
  • HY-P99119
    Anti-Mouse 4-1BB/CD137 Antibody (3H3)
    Inhibitor
    Anti-Mouse 4-1BB/CD137 Antibody (3H3) is an anti-mouse 4-1BB/CD137 IgG2a monoclonal antibody. Anti-Mouse 4-1BB/CD137 Antibody (3H3) can effectively activate memory T cells and inhibit tumors by increasing Bcl-xL and granzyme B levels. Anti-Mouse 4-1BB/CD137 Antibody (3H3) can be used for research on cancer such as lymphoma and colon cancer.
    Anti-Mouse 4-1BB/CD137 Antibody (3H3)
  • HY-B0809R
    Theophylline (Standard)
    Inhibitor
    Theophylline (Standard) is the analytical standard of Theophylline. This product is intended for research and analytical applications. Theophylline (1,3-Dimethylxanthine) is a potent phosphodiesterase (PDE) inhibitor, adenosine receptor antagonist, and histone deacetylase (HDAC) activator. Theophylline (1,3-Dimethylxanthine) inhibits PDE3 activity to relax airway smooth muscle. Theophylline (1,3-Dimethylxanthine) has anti-inflammatory activity by increase IL-10 and inhibit NF-κB into the nucleus. Theophylline (1,3-Dimethylxanthine) induces apoptosis. Theophylline (1,3-Dimethylxanthine) can be used for asthma and chronic obstructive pulmonary disease (COPD) research.
    Theophylline (Standard)
  • HY-N2255
    Crebanine
    Inhibitor 99.83%
    Crebanine is an isoquinoline-like alkaloid that can be derived from Stephania. Crebanine is an antagonist of the α7-nAChR with an IC50 of 19.1 μM. Crebanine suppresses the proliferation, migration, and invasion of cancer cells, triggers reactive oxygen species (ROS) burst, and promotes apoptosis. Crebanine inhibits the AKT/FoxO3a, NF-κB and MAPK signaling pathways. Crebanine attenuates NOX2 hyperactivation, exhibits antioxidant properties by reducing reactive oxygen species and peroxidation. Crebanine inhibits voltage-dependent Na+ current in guinea-pig ventricular myocytes. Crebanine has high inhibitory activity against gram-positive animal pathogenic bacteria. Crebanine ameliorates ischemia-reperfusion brain damage in middle cerebral artery occlusion and reperfusion (MCAO/R) rats. Crebanine significantly improves Scopolamine (HY-N0296)-induced cognitive deficits in ICR mice. Crebanine can be used for the study of hepatocellular carcinoma (HCC), cerebral ischemia and Alzheimer's disease.
    Crebanine
  • HY-N2263
    Skimmin
    99.64%
    Skimmin (Umbelliferone glucoside) is a major pharmacologically active and orally active molecule present in Hydrangea paniculata, a medical herb used in traditional Chinese medicine as an anti-inflammatory agent. Skimmin has renal protective activity. Skimmin can improve creatinine clearance, and reduce plasma creatinine, and kidney injuries. Skimmin has good anti-amoebic activity against the HM1:IMMS strain of Entamoeba histolytica. Skimmin has anti-cancer and neuroprotective activities. Skimmin reduces cardiac fibrosis as well as decreasing TNF-α, IL-6, IL1β, and TGFβ1 in cardiac tissues. Skimmin can be studied in research for diabetes and diabetes-related diseases.
    Skimmin
  • HY-W026772
    Fluorene
    Activator 99.35%
    Fluorene is an orally active polycyclic aromatic hydrocarbon (PAH) and a precursor to other fluorene-based compounds. Fluorene and its derivatives serve as dye precursors for fluorene synthesis. In A549 cells, Fluorene induces oxidative stress and inflammatory responses by increasing ROS and SOD generation, exacerbating lipid peroxidation, modulating antioxidant enzyme activity, and upregulating the expression of pro-inflammatory factors TNF-α and IL-6. In vivo, Fluorene exhibits anxiolytic activity. Fluorene holds potential for research in inflammation and neurological disorders.
    Fluorene
  • HY-107390A
    AX-024 hydrochloride
    Inhibitor 99.75%
    AX-024 hydrochloride is an orally available, first-in-class inhibitor of the TCR-Nck interaction that selectively inhibits TCR-triggered T cell activation with an IC50 ~1 nM. AX-024 hydrochloride modulates cell signaling by targeting SH3 domains. AX-024 hydrochloride has low-acute toxicity and high potency and selectivity, and strongly inhibit the production of IL-6, TNF-α, IFN-γ, IL-10 and IL-17A.
    AX-024 hydrochloride
  • HY-P99390
    Tepoditamab
    Inducer ≥99%
    Tepoditamab (MCLA-117) is a full-length human IgG1 bispecific monoclonal antibody that binds to CLEC12A of myeloid cells and CD3 of cytotoxic T cells. Among others, CLEC12A is a myeloid differentiation antigen. Tepoditamab kills AML leukaemia mother cells and AML leukaemia stem cells, induces T cell-mediated proliferative lysis of AML cells. Tepoditamab induces upto 30-fold T-cell expansion. Tepoditamab results in moderate to strong cytokine (IFNγ, IL-6, IL-8, IL-10, and TNFα) and IFNγ release in human whole blood and PBMC, respectively. Tepoditamab can be used in acute myeloid leukaemia (AML) research.
    Tepoditamab
  • HY-P99257
    Bleselumab
    Inhibitor 98.97%
    Bleselumab (ASKP 1240) is a human anti-CD40 monoclonal antibody (mAb). Bleselumab binds to human CD40 with high affinity (Kd: 0.24 nM). Bleselumab inhibits immune responses by blocking the interaction of CD40 with its ligand CD40L. Bleselumab prevents organ transplant rejection.
    Bleselumab
  • HY-115620
    AQX-016A
    Inhibitor 98.06%
    AQX-016A is an orally active and potent SHIP1 agonist. AQX-016A can activate recombinant SHIP1 enzyme in vitro and stimulate SHIP1 activity. AQX-016A also can inhibit the PI3K pathway and TNFa production, can be useful for various inflammatory diseases research.
    AQX-016A
  • HY-P990070
    Zigakibart
    Inhibitor 99.85%
    Zigakibart (BION-1301) is an IgG4-kappa, anti-TNFSF13 (tumor necrosis factor (TNF) superfamily member 13, APRIL, CD256) humanized monoclonal antibody. Zigakibart shows anti-inflammatory activity.
    Zigakibart
  • HY-154822
    DRI-C25441
    Inhibitor 99.53%
    DRI-C25441 is a potent blocker of CD40 and CD40L interaction, with an IC50 of 0.36 μM. DRI-C25441 can inhibit the immune response induced by alloantigen.
    DRI-C25441
  • HY-B0446
    Naphazoline hydrochloride
    Inhibitor 99.38%
    Naphazoline (Naphthazoline) hydrochloride is a potent α-adrenergic receptor agonist. Naphazoline hydrochloride reduces vascular hyperpermeability and promotes vasoconstriction. Naphazoline hydrochloride reduces the levels of inflammatory factors (TNF-α, IL-1β and IL-6), cytokines (IFN-γ and IL-4), IgE, GMCSF, and NGF. Naphazoline hydrochloride can be used for non-bacterial conjunctivitis research.
    Naphazoline hydrochloride
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity

Following the binding of TNF to TNF receptors, TNFR1 binds to TRADD, which recruits RIPK1, TRAF2/5 and cIAP1/2 to form TNFR1 signaling complex I; TNFR2 binds to TRAF1/2 directly to recruit cIAP1/2. Both cIAP1 and cIAP2 are E3 ubiquitin ligases that add K63 linked polyubiquitin chains to RIPK1 and other components of the signaling complex. The ubiquitin ligase activity of the cIAPs is needed to recruit the LUBAC, which adds M1 linked linear polyubiquitin chains to RIPK1. K63 polyubiquitylated RIPK1 recruits TAB2, TAB3 and TAK1, which activate signaling mediated by JNK and p38, as well as the IκB kinase complex. The IKK complex then activates NF-κB signaling, which leads to the transcription of anti-apoptotic factors-such as FLIP and Bcl-XL-that promote cell survival. 

 

The formation of TNFR1 complex IIa and complex IIb depends on non-ubiquitylated RIPK1. For the formation of complex IIa, ubiquitylated RIPK1 in complex I is deubiquitylated by CYLD. This deubiquitylated RIPK1 dissociates from the membrane-bound complex and moves into the cytosol, where it interacts with TRADD, FADD, Pro-caspase 8 and FLIPL to form complex IIa. By contrast, complex IIb is formed when the RIPK1 in complex I is not ubiquitylated owing to conditions that have resulted in the depletion of cIAPs, which normally ubiquitylate RIPK1. This non-ubiquitylated RIPK1 dissociates from complex I, moves into the cytosol, and assembles with FADD, Pro-caspase 8, FLIPL and RIPK3 (but not TRADD) to form complex IIb. For either complex IIa or complex IIb to prevent necroptosis, both RIPK1 and RIPK3 must be inactivated by the cleavage activity of the Pro-caspase 8-FLIPL heterodimer or fully activated caspase 8. The Pro-caspase 8 homodimer generates active Caspase 8, which is released from complex IIa and complex IIb. This active Caspase 8 then carries out cleavage reactions to activate downstream executioner caspases and thus induce classical apoptosis. 

 

Formation of the complex IIc (necrosome) is initiated either by RIPK1 deubiquitylation mediated by CYLD or by RIPK1 non-ubiquitylation due to depletion of cIAPs, similar to complex IIa and complex IIb formation. RIPK1 recruits numerous RIPK3 molecules. They come together to form amyloid microfilaments called necrosomes. Activated RIPK3 phosphorylates and recruits MLKL, eventually leading to the formation of a supramolecular protein complex at the plasma membrane and necroptosis [1][2].

 

Reference:
[1]. Brenner D, et al. Regulation of tumour necrosis factor signalling: live or let die.Nat Rev Immunol. 2015 Jun;15(6):362-74. 
[2]. Conrad M, et al. Regulated necrosis: disease relevance and therapeutic opportunities.Nat Rev Drug Discov. 2016 May;15(5):348-66. 
 

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