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-160412
    Balinatunfib
    Inhibitor 99.94%
    Balinatunfib (SAR-441566) is an orally active inhibitor of TNFR1 signaling. By binding to the central pocket of the soluble TNFα (sTNFα) trimer, Balinatunfib stabilizes an asymmetric conformation, blocking its binding to TNFR1 (without affecting TNFR2) and thus inhibiting downstream pathways. Balinatunfib has anti-inflammatory activity, and can be used in the study of autoimmune diseases.
    Balinatunfib
  • HY-P9980
    Belantamab
    Inhibitor 99.90%
    Belantamab (GSK2857916) is a humanized IgG1 anti-BCMA/TNFRSF17 monoclonal antibody. Belantamab is linked to MMAF (HY-15579) through a non-cleavable ADC linker to synthesize the antibody-active molecule conjugate (ADC) Belantamab mafodotin (HY-P3239). After binding to BCMA on the surface of tumor cells, Belantamab mafodotin enters the cell through receptor-mediated endocytosis. After entering the cell, Belantamab mafodotin releases MMAF, blocks cell division by inhibiting tubulin polymerization, arrests the cell cycle and induces cell apoptosis. Belantamab can be used for the study of multiple myeloma, especially relapsed/refractory multiple myeloma.
    Belantamab
  • HY-P9952
    Belimumab
    Inhibitor 99.40%
    Belimumab (LymphoStat B) is a humanized IgG1λ monoclonal antibody against B-lymphocyte stimulator (BLyS) protein. Belimumab antagonizes BLyS activity in autoimmune diseases and B-lymphocyte malignancies. Belimumab can be used for systemic lupus erythematosus (SLE) research. The component ratio of this product is Active ingredient: Excipients = 1:1.0-1:1.2.
    Belimumab
  • HY-13812
    QNZ
    Inhibitor 99.50%
    QNZ (EVP4593) shows strong inhibitory effects on NF-κB transcriptional activation and TNF-α production with IC50s of 11 and 7 nM, respectively. QNZ (EVP4593) is a neuroprotective inhibitor of SOC channel.
    QNZ
  • HY-120934
    C25-140
    Inhibitor 99.92%
    C25-140, a first-in-class, orally active, and fairly selective TRAF6-Ubc13 inhibitor, directly binds to TRAF6, and blocks the interaction of TRAF6 with Ubc13. C25-140 lowers TRAF6 activity, reduces NF-κB activation, and combats autoimmunity.
    C25-140
  • HY-P9979
    Rozanolixizumab
    Inhibitor 99.34%
    Rozanolixizumab (UCB7665), a humanized high-affinity anti-human neonatal Fc receptor (FcRn) monoclonal antibody (IgG4P), is used to the research of reducing pathogenic IgG in autoimmune and alloimmune diseases.
    Rozanolixizumab
  • HY-B0539
    Desloratadine
    Inhibitor 99.98%
    Desloratadine (Sch34117) is an orally active and selective H1 receptor antagonist (Ki=0.9 nM) with anti-inflammatory and anti-allergic activities. Desloratadine inhibits the release of histamine and LTC4 from human basophils and targets the regulatory signals of IL-4 and IL-13 production in basophils. Desloratadine significantly alleviates SAR symptoms in patients with concurrent asthma and can be used in the study of seasonal allergic rhinitis and chronic idiopathic urticaria.
    Desloratadine
  • HY-P99625
    Frexalimab
    Inhibitor 99.00%
    Frexalimab (SAR441344) is a second-generation monoclonal antibody targeting the CD40 ligand (CD40L) with a good safety profile. Frexalimab inhibits the binding between CD40 and CD40L to modulate immune response. Frexalimab is likely to help prevent the process of β-cell destruction. Frexalimab is proming for multiple sclerosis, lupus erythematosus, Sj gren’s syndrome and type I diabetes research.
    Frexalimab
  • HY-P99568
    Telitacicept
    Inhibitor 99.30%
    Telitacicept (RC18) is a fully human TACI-Fc fusion protein. Telitacicept is a dual B lymphocyte stimulator (BLyS)/APRIL (a proliferation-inducing ligand) inhibitor that effectively blocks proliferation of B lymphocytes. Telitacicept can be used in research of B-cell autoimmune disease. The component ratio of this product is Active ingredient : Excipients = 1: 0.5-1: 0.8.
    Telitacicept
  • HY-133122
    UCB-9260
    Inhibitor 99.36%
    UCB-9260, an orally active compound, inhibits TNF signaling by stabilising an asymmetric form of the trimer. UCB-9260 is selective for TNF over other superfamily members, and binds TNF with a similar Kd of 13 nM.
    UCB-9260
  • HY-P99056
    Utomilumab
    Inhibitor 99.33%
    Utomilumab (PF 05082566) is a fully human IgG2 agonist monoclonal antibody that selectively binds to 4-1BB/CD137. Utomilumab can be used in the research of tumors such as follicular and other CD20+ non-Hodgkin lymphomas.
    Utomilumab
  • HY-111255
    SPD304
    Inhibitor 99.72%
    SPD304 is a selective TNF-α inhibitor, which promotes dissociation of TNF trimers and therefore blocks the interaction of TNF and its receptor. SPD304 has an IC50 of 22 μM for inhibiting in vitro TNF receptor 1 (TNFR1) binding to TNF-α.
    SPD304
  • HY-N0405
    Orientin
    Inhibitor 99.89%
    Orientin is a neuroprotective agentinhibits which has anti-inflammation, anti-oxidative, anti-tumor, and cardio protection properties. Orientin inhibits the levels of IL-6, IL-1β and TNF-α. Orientin increases IL-10 level. Orientin exhibits neuroprotective effect by inhibits TLR4 and NF-kappa B signaling pathway. Orientin can used in study neuropathic pain.
    Orientin
  • HY-N0722
    Neochlorogenic acid
    Inhibitor 99.80%
    Neochlorogenic acid is a natural polyphenolic compound found in dried fruits and other plants. Neochlorogenic acid inhibits the production of TNF-α and IL-1β. Neochlorogenic acid suppresses iNOS and COX-2 protein expression. Neochlorogenic acid also inhibits phosphorylated NF-κB p65 and p38 MAPK activation.
    Neochlorogenic acid
  • HY-P99151
    Brentuximab
    Inhibitor 99.64%
    Brentuximab (CAC-10) is a chimeric antibody targeting CD30. Brentuximab is conjugated with Monomethyl auristatin E (MMAE) (HY-15162) to form the antibody-drug conjugate Brentuximab vedotin (HY-P99107A). Brentuximab can be used for the research of cancer, such as lymphoma.
    Brentuximab
  • HY-P99111
    Golimumab
    Inhibitor 99.77%
    Golimumab (CNTO-148) is a potent human IgG1 TNFα antagonist monoclonal antibody. Golimumab has anti-inflammation activitity and inhibits IL-6 and IL-1β production. Golimumab acts via targeting and neutralizing TNF to prevent inflammation and destruction of cartilage and bone. Golimumab has the anticancer activity and induces cell apoptosis. Golimumab can be used for rheumatoid arthritis, Crohn's disease and cancer research.
    Golimumab
  • HY-N0509
    Astilbin
    Inhibitor 99.80%
    Astilbin is a flavonoid compound and enhances NRF2 activation. Astilbin also suppresses TNF-α expression and NF-κB activation.
    Astilbin
  • HY-P99653
    Ianalumab
    Inhibitor 99.97%
    Ianalumab (VAY-736) is a human, decarboxylated antibody against BAFF-R. Ianalumab can block the interaction between BAFF and BAFF-R and antagonize the apoptosis protection mediated by BAFF. Ianalumab exerts antibody-dependent cytotoxic (ADCC), depending on effector cell activation mediated by immune receptor tyrosine activation motif (ITAM).
    Ianalumab
  • HY-N0297
    Sinensetin
    Inhibitor 99.62%
    Sinensetin is a methylated flavonoid found in fruits that has strong anti-vascular and anti-inflammatory properties.
    Sinensetin
  • HY-P99796
    Ozoralizumab
    Inhibitor 99.80%
    Ozoralizumab (ATN-103) is an anti-TNFα humanized antibody. Ozoralizumab is a humanized trivalent nanobody compound that consists of two anti-human TNFα nanobodies and an anti-human serum albumin (HSA) nanobody. Ozoralizumab can be used in research of arthritis.
    Ozoralizumab
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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