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-160180
    Glucocorticoid receptor agonist-4 Ala-Ala-Mal
    Inhibitor
    Glucocorticoid receptor agonist-4 Ala-Ala-Mal (Compound Preparation 9) is an anti-human TNFα antibody-glucocorticoid receptor agonist (GC) conjugate. Glucocorticoid receptor agonist-4 Ala-Ala-Mal can be used in the study of autoimmune and inflammatory diseases.
    Glucocorticoid receptor agonist-4 Ala-Ala-Mal
  • HY-173404
    VB-85247
    Inducer
    VB-85247 is a STING agonist. VB-85247 induces upregulation of inflammatory cytokines IFNα/β, TNFα, IL6, and CXCL10, as well as maturation and activation of dendritic cells by activating the STING pathway. VB-85247 can achieve regression of intrabladder tumors and can be used in bladder cancer research.
    VB-85247
  • HY-P990280
    Anti-Mouse CD27 Antibody (RM27-3E5)
    Inhibitor
    Anti-Mouse CD27 Antibody (RM27-3E5) is a rat-derived IgG2a, κ type antibody inhibitor, targeting to mouse CD27.
    Anti-Mouse CD27 Antibody (RM27-3E5)
  • HY-P991194
    HFB-200301
    Ligand
    HFB-200301 is an IgG1 antibody targeting tumor necrosis factor receptor 2 (TNFR2). HFB-200301 promotes the activation of TNFR2, thereby activating relevant signaling pathways, such as activating RelA and cRel-containing NF-κB dimers through the classical NF-κB pathway, affecting cell metabolism and gene expression in the presence of sTNF. HFB-200301 is promising for research of cancers.
    HFB-200301
  • HY-159144
    Anti-inflammatory agent 91
    Inhibitor
    Anti-inflammatory agent 91 (Compound 4o) is an anti-inflammatory agent that can reduce inflammatory cytokines by inhibiting the STAT3 and NF-κB signaling pathways. Anti-inflammatory agent 91 can be used in research to improve skin inflammation associated with psoriasis.
    Anti-inflammatory agent 91
  • HY-149331
    TNF-α-IN-11
    Inhibitor
    TNF-α-IN-11 (Compound 10) is a TNF-α inhibitor with a KD value of 12.06 μM. TNF-α-IN-11 binds to TNF-α and blocks the activation of TNF-α-trigged caspase and NF-κB signaling pathway. TNF-α-IN-11 inhibits the phosphorylation of IκBα, as well as the nuclear translocation of NF κB p65. TNF-α-IN-11 can be used for research of TNF-α-mediated autoimmune diseases.
    TNF-α-IN-11
  • HY-124954
    MN-25
    MN-25 (compound 4a) is an orally active indolpyridone that serves as a novel cannabinoid ligand. MN-25 has Ki of 245 nM and 11 nM for CB1 and CB2. MN-25 has CB2 agonist activity and inhibits TNF-R release in human peripheral blood mononuclear cells in vitro with an IC50 of 33 μM. MN-25 shows efficacy in a mouse acute inflammation model at oral doses up to 50 mg/kg>[1].
    MN-25
  • HY-P991490
    ISB2001
    Inhibitor
    ISB2001 is a human trispecific antibody (tsAb) targeting CD38 & CD3 & BCMA. BI-765423 can be used in relapsed/refractory multiple myeloma (RRMM) research. Recommended isotype control: IgG1-kappa-IgG1-Fab.
    ISB2001
  • HY-162797
    PDE4-IN-18
    Inhibitor
    PDE4-IN-18 (compound 1l) is a PDE4 inhibitor (IC50=1.55 μM) with anti-inflammatory activity. PDE4-IN-18 exerts anti-inflammatory effects by reducing excessive immune cell infiltration and intestinal membrane formation, as well as reducing the mRNA expression of pro-inflammatory cytokines (such as TNF-α and IL-6) in synovial tissue. PDE4-IN-18 can be used in the study of rheumatoid arthritis and psoriasis.
    PDE4-IN-18
  • HY-P990809
    Anti-Mouse 4-1BB/CD137 Antibody (LOB12.3)
    Anti-Mouse 4-1BB/CD137 Antibody (LOB12.3) is a kind of rat IgG1 kappa in vivo mouse antibody, targeting to 4-1BB/CD137. The recommend isotype control of Anti-Mouse 4-1BB/CD137 Antibody (LOB12.3): Rat IgG1 kappa, Isotype Control (HY-P99979).
    Anti-Mouse 4-1BB/CD137 Antibody (LOB12.3)
  • HY-P3149A
    LEESGGGLVQPGGSMK TFA
    LEESGGGLVQPGGSMK TFA, a proteolysis peptide, is a component of Infliximab. LEESGGGLVQPGGSMK TFA can be used for quantitative analysis of Infliximab. Infliximab is a chimeric monoclonal IgG1 antibody that specifically binds to TNF-α.
    LEESGGGLVQPGGSMK TFA
  • HY-P991466
    Anti-CD27 Antibody (M2191)
    Inhibitor
    Anti-CD27 Antibody (M2191) is a human monoclonal antibody (mAb) targeting TNFRSF7/CD27. Anti-CD27 Antibody (M2191) inhibits the binding of sCD70 to human CD27 ECD-Fc. Anti-CD27 Antibody (M2191) can be used in the study of anti-tumor immunity. Recommended isotype control: Human IgG1 kappa, Isotype Control (HY-P99001).
    Anti-CD27 Antibody (M2191)
  • HY-172608
    TNF-α-IN-24
    Inhibitor
    TNF-α-IN-24 (Example 15) is a TNF-α inhibitor with an IC50 of 4.1 nM. TNF-α-IN-24 can be used in study of inflammatory and autoimmune disorders such as rheumatoid arthritis and Crohn’s disease.
    TNF-α-IN-24
  • HY-101871
    Trehalose 6-behenate
    Trehalose 6-behenate is a Th1/Th17 skewing vaccine adjuvant.
    Trehalose 6-behenate
  • HY-P990529
    Anti-TNFSF2/TNFa Antibody
    Inhibitor
    The Anti-TNFSF2/TNFa Antibody is a CHO-expressed human antibody that targets TNFSF2/TNFa. The Anti-TNFSF2/TNFa Antibody contains huIgG1 heavy chain and huκ light chain, with a predicted molecular weight (MW) of 145 kDa. The isotype control for the Anti-TNFSF2/TNFa Antibody can refer to Human IgG1 kappa, Isotype Control (HY-P99001).
    Anti-TNFSF2/TNFa Antibody
  • HY-N2464R
    Maltotetraose (Standard)
    Maltotetraose (Standard) is the analytical standard of Maltotetraose. This product is intended for research and analytical applications. Maltotetraose can be used as a substrate for the enzyme-coupled determination of amylase activity in biological fluids.
    Maltotetraose (Standard)
  • HY-P10797
    TAT-N24
    Inhibitor
    TAT-N24 is a cell-permeable TAT peptide as a p55PIK signaling inhibitor. TAT-N24 is effective for corneal neovascularization (CNV) and ocular inflammation by inhibiting the HIF-1α/NF-κB signaling pathway in corneal suture (CS). TAT-N24 also inhibits corneal neovascularization.
    TAT-N24
  • HY-155821
    Anti-inflammatory agent 55
    Inhibitor
    Anti-inflammatory agent 55 (compound 9j) is a derivative of Coixol and has anti-inflammatory activity. Anti-inflammatory agent 54 inhibits the NF-κB pathway and downregulates the expression of iNOS, TNF-α, IL-6 and IL-1β. Anti-inflammatory agent 54 inhibits LPS-induced nitric oxide (NO) production in RAW264.7 macrophages (IC50: 0.8 μM) and exerts in vivo anti-inflammatory activity in a mouse auricular edema model.
    Anti-inflammatory agent 55
  • HY-P991126
    Ciltistotug
    Ligand
    Ciltistotug is a monoclonal antibody targeting human CD40 (TNFRSF5). Ciltistotug activates immune cells after binding to CD40, exerting immunostimulatory and antitumor activities. Ciltistotug is promising for research of cancer immunotherapy.
    Ciltistotug
  • HY-18759
    BMS-751324
    Inhibitor
    BMS-751324 is a p38α MAPK inhibitor. BMS-751324 equips a precursor of carbamyl-methyl linkage, containing esters and phosphate functional groups derived from hydroxyphenylacetic acid (HPA). BMS-751324 effectively inhibits foot swelling and LPS-induced TNFα production in an arthritic rat model.
    BMS-751324
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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