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-P990095
    Vonsetamig
    Inhibitor
    Vonsetamig is a humanised immunoglobulin G4-kappa, anti-TNFRSF17 and CD3E bispecific antibody. Vonsetamig is an antineoplastic.
    Vonsetamig
  • HY-N7012
    7,3',4'-Tri-O-methylluteolin
    Inhibitor 99.28%
    7,3',4'-Tri-O-methylluteolin (5-Hydroxy-3',4',7-trimethoxyflavone) is a flavonoid with multiple biological activities. 7,3',4'-Tri-O-methylluteolin inhibits soybean lipoxygenase (LOX), with an IC50 value of 23.97 µg/mL. 7,3',4'-Tri-O-methylluteolin possesses anti-inflammatory effects in Lipopolysaccharides (HY-D1056) (LPS)-induced RAW 264.7 macrophages. 7,3',4'-Tri-O-methylluteolin inhibits the binding of MDM2 with p53 and induces apoptosis in MCF-7 breast cancer cells. 7,3',4'-Tri-O-methylluteolin also has antioxidant, antifungal and antitrypanosomal activitiessup>[4]sup>[5].
    7,3',4'-Tri-O-methylluteolin
  • HY-106359A
    Delmitide acetate
    Inhibitor 98.55%
    Delmitide (RDP58) acetate is an orally active d-isomer decapeptide with potent anti-inflammatory activity. Delmitide acetate inhibits production of TNF-α, IFN-γ, and interleukin (IL)-12, and up-regulates heme oxygenase 1 activity. Delmitide acetate can be used for the research of ulcerative colitis.
    Delmitide acetate
  • HY-N6927
    Isoforskolin
    Inhibitor ≥98.0%
    Isoforskolin is the principle active component of C. forskohlii native to China. Isoforskolin reduces the secretion of lipopolysaccharide (LPS)-induced cytokines, namely TNF-α, IL-1β, IL-6 and IL-8, in human mononuclear leukocytes. Isoforskolin acts as an anti-inflammatory agent for the treatment of Lyme arthritis.
    Isoforskolin
  • HY-147078
    EJMC-1
    Inhibitor 99.69%
    EJMC-1 is a moderately potent TNF-α inhibitor with an IC50 value of 42 μM.
    EJMC-1
  • HY-114095
    BML-280
    Inhibitor 99.64%
    BML-280 (VU0285655-1) is a potent and selective phospholipase D2 (PLD2) inhibitor. BML-280 has the ability to prevent caspase-3 cleavage and reduction in cell viability induced by high glucose. BML-280 can be used for rheumatoid arthritis research.
    BML-280
  • HY-N8277
    Kdo2-Lipid A ammonium
    Inducer 99.00%
    Kdo2-Lipid A ammonium is a chemically defined lipopolysaccharide (LPS) with endotoxin activity equal to LPS. Kdo2-Lipid A ammonium is highly selective for TLR4. Kdo2-Lipid A ammonium stimulates the release of both TNF and PGE2.
    Kdo2-Lipid A ammonium
  • HY-P990710
    Acimtamig
    Acimtamig (AFM13) is a CD30/CD16A bispecific innate cell engager. Acimtamig binds to the CD16A expressed on natural killer (NK) cells and binds to CD30 on CD30-expressing tumor cells, thereby selectively cross-linking tumor and NK cells. Acimtamig can be used for the study of eripheral T-cell lymphoma (PTCL).
    Acimtamig
  • HY-P2663
    Acetyl tetrapeptide-2
    99.70%
    Acetyl tetrapeptide-2 is a bio-active peptide that exhibits anti-aging activity. Acetyl tetrapeptide-2 can reduce loss of thymic factors. Acetyl tetrapeptide-2 can increase the stiffness of HaCaT cells. Acetyl tetrapeptide-2 is a stimulator of structural skin elements including collagen and elastin.
    Acetyl tetrapeptide-2
  • HY-N7064
    Iminostilbene
    Inhibitor 99.34%
    Iminostilbene is a chemical precursor of carbamazepine. Additionally, Iminostilbene is an orally active inhibitor of PKM2 (Pyruvate Kinase M2) and COX2 (Cyclooxygenase-2). Iminostilbene exerts its effects by inhibiting PKM2 and its interaction with HIF-1α and STAT3, reducing COX2 and iNOS expression, and decreasing LPS-induced release of IL-1β, IL-6, TNF-α, and MCP-1, thereby suppressing macrophage-mediated inflammatory responses and improving myocardial ischemia/reperfusion (MI/R) injury. Iminostilbene holds promise for research in inflammation regulation, cardiovascular diseases (such as MI/R injury), and macrophage-mediated immune-related diseases.
    Iminostilbene
  • HY-N2036
    Mosloflavone
    98.87%
    Mosloflavone is a flavonoid isolated from Scutellaria baicalensis Georgi with ?anti-EV71 activity. Mosloflavone? inhibits VP2 virus replication and protein expression during the initial stage of virus infection and inhibits viral VP2 capsid protein synthesis. Mosloflavone is a promising biocide and inhibits P. aeruginosa virulence and biofilm formation.
    Mosloflavone
  • HY-N1731
    2′-Hydroxy-5′-methoxyacetophenone
    Inhibitor 99.96%
    2'-Hydroxy-5'-methoxyacetophenone is an acetophenone derivative with acaricidal activities. 2'-Hydroxy-5'-methoxyacetophenone attenuates the inflammatory response via NF-κB signaling pathway. 2'-Hydroxy-5'-methoxyacetophenone exhibits significant inhibitory activity against α-amylase, collagenase and aldose reductase (AR) with IC50s of 0.928, 3.264 and 20.046 μM, highlighting its potential in combating diabetes. 2'-Hydroxy-5'-methoxyacetophenone exhibits anti-ovarian cancer activity.
    2′-Hydroxy-5′-methoxyacetophenone
  • HY-N8593
    Undecane
    Inhibitor 99.66%
    Undecane is a potent cAMP agonist with anti-allergic and anti-inflammatory activities. Undecane inhibits degranulation and the secretion of histamine and TNF-α. Undecane reverses the increased levels of p38 phosphorylation, NF-κB transcriptional activity and target cytokine/chemokine genes, including thymus and activation-regulated chemokine (TARC), macrophage-derived chemokine (MDC) and interleukin-8 (IL-8). Undecane can be used for the study of skin inflammatory disorders, such as atopic dermatitis.
    Undecane
  • HY-138793
    2-(2,6-Dioxopiperidin-3-yl)phthalimidine
    Inhibitor 99.67%
    2-(2,6-Dioxopiperidin-3-yl)phthalimidine (EM-12), a teratogenic Thalidomide analogue, is more active than Thalidomide and is much more stable for hydrolysis. 2-(2,6-Dioxopiperidin-3-yl)phthalimidine enhances 1,2-dimethylhydrazine-induction of rat colon adenocarcinomas.
    2-(2,6-Dioxopiperidin-3-yl)phthalimidine
  • HY-W753791
    (±)-Perillaldehyde
    Inhibitor
    (±)-Perillaldehyde has an antidepressant effect by modulating the olfactory nervous system in a mouse model of stress-induced depression. (±)-Perillaldehyde also has anti-inflammatory activity, inducing JNK activation in RAW264.7 cells and inhibiting the expression of TNF-α, with an IC50 of 171.7 μM.
    (±)-Perillaldehyde
  • HY-P990124
    Anti-Mouse GITR Antibody (DTA-1)
    Agonist 98.47%
    Anti-Mouse GITR Antibody (DTA-1) is a rat derived IgG2b monoclonal agonist antibody targeting mouse GITR. Anti-Mouse GITR Antibody (DTA-1) can activate T cells and B cells to enhance immune response. Anti-Mouse GITR Antibody (DTA-1) selectively enhances Th2 cell effector function through GITR signaling. Anti-Mouse GITR Antibody (DTA-1) may exacerbate allergic reactions. Anti-Mouse GITR Antibody (DTA-1) can be used for researches on cancer and allergic conditions such as colon cancer and allergic asthma. The recommed isotype control of Anti-Mouse GITR Antibody (DTA-1) is Rat IgG2b kappa, Isotype Control (HY-P990682).
    Anti-Mouse GITR Antibody (DTA-1)
  • HY-100573A
    (E/Z)-Necrosulfonamide
    Inhibitor 98.84%
    (E/Z)-Necrosulfonamide is a racemic compound of Necrosulfonamide (HY-100573). Necrosulfonamide is a MLKL and Gasdermin D (GSDMD) inhibitor, capable of separately inhibiting necroptosis and pyroptosis of cells. Necrosulfonamide does not affect the activation of upstream signals, but specifically inhibits the downstream executor oligomerization step. Necrosulfonamide reduces the expression of the key kinases NLRP3 and caspase-1 involved in necroptosis and pyroptosis, activate the Nrf2 pathway and the downstream antioxidant enzymes, and also downregulates a variety of inflammatory factors. Necrosulfonamide plays significant roles in various diseases such as neurodegenerative diseases (such as Parkinson’s disease), tissue damage and ischemia-reperfusion injury, inflammatory bowel disease, osteoarthritis and fracture repair, and hair loss by regulating two important programmed necrosis pathways.
    (E/Z)-Necrosulfonamide
  • HY-W923189
    Neral
    Inhibitor
    Neral is a monoterpene compound that has anti-inflammatory and anti-cancer properties. Neral can inhibit TNF-α and IL-6, and it also suppresses inflammatory mediators like pro-IL-1β, iNOS, COX-2, and NLRP-3.
    Neral
  • HY-P99015
    Dacetuzumab
    Inhibitor
    Dacetuzumab (SGN-40) is a humanized IgG1, anti-CD40 monoclonal antibody with anti-lymphoma activity. Dacetuzumab kills tumor cells via immune effector functions (antibody-dependent cellular cytotoxicity and phagocytosis [ADCC/ADCP]). Dacetuzumab ((SGN-40) can be used for multiple myeloma research.
    Dacetuzumab
  • HY-P990040
    Exlinkibart
    Inhibitor 99.66%
    Exlinkibart (LVGN-6051) targets TNFRSF9 and is an IgG1κ antibody humanized through complementarity-determining region (CDR) grafting technology.
    Exlinkibart
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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