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-P99325
    Toralizumab
    Inhibitor 99.57%
    Toralizumab (IDEC-131) is a humanized monoclonal antibody (mAb) against CD40L (CD154) comprised of human gamma 1 heavy chains and human kappa light chains. Toralizumab binds specifically to human CD40L on T cells, thereby preventing CD40 signaling. Toralizumab is an immunosuppressive agent. Toralizumab can lead to increased thrombosis. Toralizumab can be studied in research for diseases such as multiple sclerosis, systemic lupus erythematosus (SLE), and Crohn’s disease.
    Toralizumab
  • HY-18377
    Bioymifi
    Activator ≥98.0%
    Bioymifi (DR5 Activator), a potent TRAIL receptor DR5 activator, binds to the extracellular domain (ECD) of DR5 with a Kd of 1.2 μM. Bioymifi can act as a single agent to induce DR5 clustering and aggregation, leading to apoptosis.
    Bioymifi
  • HY-B1197
    Amcinonide
    Inhibitor 99.61%
    Amcinonide is an inhibitor of NO release (IC50 = 3.38 nM). Amcinonide inhibits NNC-induced expression of the proinflammatory genes iNOS, TNF-α, and IL-1β in glial cells. Amcinonide reduces the numbers of T6+/Ia+ cells with a concomitant increase in T6+/Ia- cells. Amcinonide induces a selective reduction in expression of Ia antigens. Amcinonide can also be studied in research for eczematous dermatitis.
    Amcinonide
  • HY-N6850
    Calenduloside E
    Inhibitor 99.07%
    Calenduloside E is a pentacyclic triterpenoid saponin that can be extracted from the bark and roots of Aralia ovata, and has anti-inflammatory and anti-apoptotic activities. Calenduloside E alleviates atherosclerosis by regulating macrophage polarization, improves mitochondrial function by regulating the AMPK-SIRT3 pathway, and alleviates acute liver injury. In addition, Calenduloside E promotes the interaction between L-type calcium channels and Bcl-2 related apoptosis genes, inhibits calcium overload, and alleviates myocardial ischemia/reperfusion injury. Calenduloside E also improves non-alcoholic fatty liver disease by regulating heat shock-dependent pathways, and inhibits ROS mediated JAK1-STAT3 pathways to reduce cellular inflammatory responses.
    Calenduloside E
  • HY-118922
    IW927
    Inhibitor 99.23%
    IW927 is a photochemically enhanced TNF-α-TNFR1 interaction inhibitor that blocks the binding of TNF-α to TNFRc1 with an IC50 value of 50 nM. IW927 binds reversibly to the TNFRc1 with weak affinity (Kd = 40-100 μM), covalently modifies the receptor via a photochemical reaction, and does not bind the related cytokine receptors TNFRc2 or CD40. IW927 disrupts TNFα-induced IκB phosphorylation with an IC50 value of 600 nM. IW927 can be used to develop light-independent inhibitors.
    IW927
  • HY-N2468
    Xylobiose
    ≥98.0%
    Xylobiose (1,4-β-D-Xylobiose; 1,4-D-Xylobiose) is an orally active Claudin 2/CLDN2 inhibitor and HSP27 inducer. Xylobiose works by regulating intestinal barrier function and glucose and lipid metabolism-related signaling pathways. Xylobiose inhibits CLDN2 expression to reduce intestinal permeability, induces HSP27 to enhance cell protection, and regulates the miR-122a/miR-33a axis to inhibit liver lipid synthesis and improve insulin resistance. Xylobiose can strengthen intestinal barrier integrity, reduce blood sugar and blood lipid levels, and reduce oxidative stress and inflammatory response. Xylobiose can be used in the study of type 2 diabetes and metabolic syndrome.
    Xylobiose
  • 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-139066
    Punicic acid
    Inhibitor ≥98.0%
    Punicic acid is a bioactive compound of pomegranate seed oil. Punicic acid is an isomer of conjugated α-linolenic acid and ω-5 polyunsaturated fatty acids. Punicic acid has anti-inflammatory and antioxidant activities and can inhibit the expression of inflammatory mediators such as tumor necrosis factor α (TNF-α). Punicic acid can also reduce the formation of β-amyloid deposits and hyperphosphorylation of tau by increasing the expression of GLUT4 protein and inhibiting the overactivation of calpain, and is used to prevent and treat neurodegenerative diseases. In addition, punicic acid also has breast cancer inhibitor properties that depend on lipid peroxidation and PKC pathways.
    Punicic acid
  • HY-132248
    C5 Lenalidomide
    Inhibitor 99.62%
    C5 Lenalidomide (Lenalidomide 5'-amine) (Compound 8a) is a thalidomide analog and is a potent inhibitor of TNF-α production (IC50 = 100 μM in LPS stimulated human PBMC and IC50 = 480 nM in whole blood).
    C5 Lenalidomide
  • HY-N1508
    Ecliptasaponin A
    Inhibitor 99.50%
    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.
    Ecliptasaponin A
  • HY-P990151
    Anti-Mouse TL1A/TNFSF15 Antibody (5G4.6)
    Inhibitor
    Anti-Mouse TL1A/TNFSF15 Antibody (5G4.6) is an anti-mouse TL1A/TNFSF15 IgG monoclonal antibody. Anti-Mouse TL1A/TNFSF15 Antibody (5G4.6) can reduce TL1A levels and block TL1A-DR3 interactions. Anti-Mouse TL1A/TNFSF15 Antibody (5G4.6) can be used for research on inflammation conditions such as colitis and collagen-induced arthritis (CIA).
    Anti-Mouse TL1A/TNFSF15 Antibody (5G4.6)
  • HY-161982
    JNU-0921
    Agonist 99.77%
    JNU-0921 is a potent and orally active CD137 agonist. JNU-0921 increases the mRNA expression of IFN-γ and GZMB. JNU-0921 induces luciferase activity with an EC50 value of 64.07 nM.JNU-0921 enhances effector and memory function of cytotoxic CD8+ T cells (CTLs) and alleviates their exhaustion. JNU-0921 also skews polarization of helper T cells toward T helper 1 type and enhances their activity to boost CTL function. JNU-0921 shows anticancer activity.
    JNU-0921
  • HY-118694
    TAPI-0
    Inhibitor 98.98%
    TAPI-0 is a TACE (TNF-α converting enzyme; ADAM17) inhibitor with an IC50 of 100 nM. TAPI-0 is a MMP inhibitor and also attenuates TNF-α processing.
    TAPI-0
  • 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-B1051
    Flumethasone
    Inhibitor 99.84%
    Flumethasone (Flumetasone) is an orally active, high selective and potent glucocorticoid receptor (GR) agonist. Flumethasone activates GR to inhibit nuclear factor kappa B (NF-κB)-mediated pro-inflammatory cytokine production (TNF-α, IL-1β) and promotes anti-inflammatory gene expression (IL-10), while also regulating metabolic enzyme activity (tyrosine aminotransferase induction). Flumethasone is promising for research of inflammatory diseases, cancer, and endocrine regulation.
    Flumethasone
  • HY-135674
    SR-318
    Inhibitor 98.17%
    SR-318, a chemical probe, is a potent and highly selective p38 MAPK inhibitor with IC50s of 5 nM, 32 nM and 6.11 μM for p38α, p38β and p38α/β, respectively. SR-318 potently inhibits the TNF-α release in whole blood with an IC50 of 283 nM. SR-318 has anti-cancer and anti-inflammatory activity.
    SR-318
  • HY-P99812
    Ragifilimab
    Agonist ≥99.0%
    Ragifilimab (INCAGN-1876) is an agonist monoclonal antibody targeting the glucocorticoid-induced TNFR-related protein (GITR). Ragifilimab can be used for advanced or metastatic solid tumors research.
    Ragifilimab
  • 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-123630
    Allura Red AC
    Activator 98.01%
    Allura Red AC is a food colorant, appearing as a deep red water-soluble powder or granules, used in various applications such as beverages, syrups, candies, and cereals. Allura Red AC can statically quench the intrinsic fluorescence of HSA. Additionally, Allura Red AC is a 5-hydroxytryptamine (5-HT) pathway-associated pro-inflammatory agent, capable of exacerbating experimental colitis. Allura Red AC holds potential for research in inflammatory bowel disease (IBD), intestinal barrier function, and food additive safety.
    Allura Red AC
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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