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-15507
    VGX-1027
    Inhibitor 99.67%
    VGX-1027 is an orally active isoxazole compound that exhibits various immunomodulatory properties. VGX-1027 targets macrophages, reducing the production of the proinflammatory mediators TNF-α, IL-1β, IL-10. VGX-1027 has antidiabetogenic effects by limiting cytokine-mediated immunoinflammatory events.
    VGX-1027
  • HY-P990706
    Povetacicept
    Inhibitor ≥99.0%
    Povetacicept (ALPN-303), an Fc fusion protein of an engineered TACI domain, is a dual APRIL/BAFF antagonist. Povetacicept modulates B lymphocytes and pathogenic autoantibodies for the study of Lupus and other B cell-related autoimmune diseases.
    Povetacicept
  • HY-P99167
    Lucatumumab
    Inhibitor 98.18%
    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-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-P99149
    Anti-Mouse TNFR2 Antibody (TR75-54.7)
    Inhibitor
    Anti-Mouse TNFR2 Antibody (TR75-54.7) is an anti-mouse TNFR2 IgG monoclonal antibody. Anti-Mouse TNFR2 Antibody (TR75-54.7) can reduce white blood cell count (WBC) and decrease the expression of some pro-inflammatory cytokines such as CCL2 and CXCL5. Anti-Mouse TNFR2 Antibody (TR75-54.7) can be used for researches on inflammation conditions and cancer such as breast cancer.
    Anti-Mouse TNFR2 Antibody (TR75-54.7)
  • HY-P990070
    Zigakibart
    Inhibitor 98.37%
    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-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-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-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-P99361
    Enavatuzumab
    Inhibitor 98.27%
    Enavatuzumab (PDL192; ABT-361) is a humanized IgG1 monoclonal antibody targeting the receptor of TNF-like weak inducer of apoptosis (TWEAK). TWEAK (Fn14; TNFRSF12A), the natural ligand of the TWEAK receptor (TweakR), stimulates multiple cellular responses. Enavatuzumab induces tumor growth inhibition through direct TweakR signaling and antibody dependent cell-mediated cytotoxicity (ADCC). Enavatuzumab can actively recruits and activates myeloid effectors to kill tumor cells. Enavatuzumab inhibits the growth of various human TweakR-positive cancer cell lines and xenografts in vitro and in vivo .
    Enavatuzumab
  • HY-118250
    GSK2245035
    Activator 99.79%
    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-112275
    TNF-α-IN-1
    Inhibitor 99.20%
    TNF-α-IN-1 (Compound I-7) is a TNF-α inhibitor. TNF-α-IN-1 can be studied in research for cancers, heart disease, autoimmune disease and infections.
    TNF-α-IN-1
  • 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-P990083
    Tegoprubart
    Tegoprubart is a monoclonal antibody directed against CD40 ligand (CD40L), a key mediator of costimulation. Inhibition of CD40L reduces cellular and antibody-mediated immunity and creates a more tolerant immune environment. Tegoprubart was demonstrated to have in vivo efficacy in transplantation animal models.
    Tegoprubart
  • 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 99.51%
    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-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)
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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