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-N6796
    Manumycin A
    Inhibitor 99.27%
    Manumycin A is a polyketide antibiotic and an inhibitor of thioredoxin reductase 1 (TrxR-1). Manumycin A can inhibit the growth of breast cancer cells and exert its anti-tumor activity through LC3. Manumycin A can downregulate the release of pro-inflammatory cytokines in human monocytes stimulated by TNF α, and has potential anti-inflammatory activity. Manumycin A can inhibit the Ras/Raf/ERK1/2 signaling and hnRNP H1 in castration resistant prostate cancer cells to suppress exosome biogenesis and secretion.
    Manumycin A
  • HY-N0509
    Astilbin
    Inhibitor 99.97%
    Astilbin is a flavonoid compound and enhances NRF2 activation. Astilbin also suppresses TNF-α expression and NF-κB activation.
    Astilbin
  • 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-116522
    AR420626
    98.29%
    AR420626 is a selective agonist of free fatty acid receptor 3 (FFAR3) (IC50=117 nM). AR420626 has anti-inflammatory, anticancer and antidiabetic activities. AR420626 improves neurogenic diarrhea by inhibiting nAChR mediated neural pathways. AR420626 inhibits the growth of HepG2 xenografts and inhibits the proliferation of hepatoma cells by inducing apoptosis. AR420626 also suppresses allergic asthma and eczema and has the ability to activate GPR41 to increase Ca2+ signal-mediated glucose uptake and improve diabetes.
    AR420626
  • HY-120323
    DRI-C21045
    Inhibitor 99.02%
    DRI-C21045 (compound 10) is a potent and selective inhibitor of the CD40-CD40L costimulatory protein-protein interaction (PPI) with an IC50 of 0.17 µM. DRI-C21045 shows concentration-dependent inhibition of the activation of NF-κB and B cell proliferation all induced by CD40L with IC50s of 17.1 µM and 4.5 µM, respectively.
    DRI-C21045
  • HY-P990006
    Duvakitug
    Inhibitor 99.76%
    Duvakitug (TEV-48574) is a humanized IgG1-λ2 monoclonal antibody targeting to TNFSF15/TL1A. Duvakitug' main expression system is CHOK1SV cells endogenously expressing glutamine synthetase (GS). Duvakitug can be used in the study of Crohn's Disease (CD).
    Duvakitug
  • HY-N0472
    Geraniin
    Inhibitor 99.84%
    Geraniin is a TNF-α releasing inhibitor with numerous activities including anticancer, anti-inflammatory, and anti-hyperglycemic activities, with an IC50 of 43 μM.
    Geraniin
  • HY-N0405
    Orientin
    Inhibitor 99.73%
    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 99.77%
    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-107737
    1,2-DLPC
    Activator ≥98.0%
    1,2-DLPC (1,2-Dilauroyl-sn-glycero-3-phosphocholine) is a ligand for LRH-1 agonists. 1,2-DLPC is a phospholipid used in the synthesis of liposomes. 1,2-DLPC enhances fat breakdown and apoptosis in fat cells through a TNFα-dependent pathway, while also inhibiting palmitate-induced insulin resistance through PPARα-mediated inflammation in muscle cells.
    1,2-DLPC
  • HY-110247
    TRAF-STOP inhibitor 6877002
    Inhibitor 99.67%
    TRAF-STOP inhibitor 6877002 is a selective CD40-TRAF6 interaction inhibitor. TRAF-STOP inhibitor 6877002 exerts anti-atherosclerotic activity by blocking the CD40-TRAF6 signaling pathway, inhibiting classical monocyte activation, leukocyte recruitment, and macrophage activation and migration. TRAF-STOP inhibitor 6877002 reduces the phosphorylation levels of signaling intermediates in the canonical NF-κB pathway.
    TRAF-STOP inhibitor 6877002
  • HY-N0528
    Linarin
    98.00%
    Linarin (Buddleoside) is an orally active and selective inhibitor of acetylcholinesterase (AChE). Linarin has many activities, such as anti-inflammatory, antioxidant, sleep aid and sedation, bone differentiation, anti-tumor, antibacterial and antiviral. Linarin can be used to study diseases such as the nervous system, osteoporosis and cancer.
    Linarin
  • HY-142618
    TNF-α-IN-6
    Inhibitor 99.55%
    TNF-α-IN-6 (compound 12) is an orally effective allosteric inhibitor of TNFα (KD = 6.8 nM). TNF-α-IN-6 has anti-inflammatory effects.
    TNF-α-IN-6
  • HY-P99339
    Tebentafusp
    99.90%
    Tebentafusp (IMCgp100) is a bispecific fusion protein to target gp100 peptide-HLA-A*02:01 (a melanoma-associated antigen). Tebentafusp guides T cells to kill gp100-expressing tumor cells via a high affinity T-cell receptor (TCR) binding domain and an anti-CD3 T-cell engaging domain. Tebentafusp leads to inflammatory cytokines and cytolytic proteins production, resulting in the direct lysis of tumour cells.
    Tebentafusp
  • HY-147141
    HS-276
    Inhibitor 98.59%
    HS-276 is an orally active, potent and highly selective TAK1 inhibitor, with a Ki of 2.5 nM. HS-276 shows significant inhibition of TAK1, CLK2, GCK, ULK2, MAP4K5, IRAK1, NUAK, CSNK1G2, CAMKKβ-1, and MLK1, with IC50 values of 8.25, 29, 33, 63, 125, 264, 270, 810, 1280, and 5585 nM, respectively. HS-276 can be used for rheumatoid arthritis (RA) research.
    HS-276
  • 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.
    Telitacicept
  • HY-N0448
    10-Gingerol
    Inhibitor 99.66%
    10-Gingerol is an AMPK agonist, which is found in the ginger oleoresin from fresh rhizome with anti-inflammatory, antioxidant and anti-proliferative activities. 10-Gingerol suppresses neointimal hyperplasia and inhibits vascular smooth muscle cell proliferation. 10-Gingerol exhibits substantial scavenging activities with an IC50 value of 10.47 μM against DPPH radical, an IC50 value of 1.68 μM against superoxide radical and an IC50 value of 1.35 μM against hydroxyl radical. 10-Gingerol inhibits the proliferation of MDA-MB-231 tumor cell line with an IC50 of 12.1 μM. 10-Gingerol suppresses the proliferation, migration, invasion, and induced apoptosis through targeting the PI3K/Akt signaling pathway in MDA-MB-231/IR cells. 10-Gingerol is promising for research of ulcerative colitis.
    10-Gingerol
  • HY-N0635
    Prim-O-glucosylcimifugin
    99.94%
    Prim-O-glucosylcimifugin exerts anti-inflammatory effects through the inhibition of iNOS and COX-2 expression by through regulating JAK2/STAT3 signaling.
    Prim-O-glucosylcimifugin
  • HY-N0619
    Mulberroside A
    Inhibitor 99.86%
    Mulberroside A is one of the main bioactive constituent in mulberry (Morus alba L.). Mulberroside A decreases the expressions of TNF-α, IL-1β, and IL-6 and inhibits the activation of NALP3, caspase-1, and NF-κB and the phosphorylation of ERK, JNK, and p38, exhibiting anti-inflammatory antiapoptotic effects. Mulberroside A shows inhibitory activity against mushroom tyrosinase with an IC50 of 53.6 μM.
    Mulberroside A
  • HY-N6607
    Tryptanthrin
    Modulator 99.89%
    Tryptanthrin is an indole quinazoline that could be an alkaloid from indigo-bearing plants. Tryptanthrin is a potent and orally active cellular Leukotriene (LT) biosynthesis inhibitor. Tryptanthrin has anticancer activity. Tryptanthrin suppresses the expression levels of NOS1, COX-2, and NF-κB and regulates the expression levels of IL-2, IL-10, and TNF-α.
    Tryptanthrin
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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