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-133807
    Benpyrine
    Inhibitor 99.26%
    Benpyrine is a highly specific and orally active TNF-α inhibitor with a KD value of 82.1 μM. Benpyrine tightly binds to TNF-α and blocks its interaction with TNFR1, with an IC50 value of 0.109 µM. Benpyrine has the potential for TNF-α mediated inflammatory and autoimmune disease research.
    Benpyrine
  • HY-128754
    Monoolein
    Inhibitor 99.91%
    Monoolein is a biocompatible lipid molecule that can be used as a carrier for bone repair. Monoolein exhibits anti-inflammatory activity by inhibiting the immune response induced by LPS (HY-D1056). It exerts its anti-inflammatory effects by reducing the production of immune response factors such as IL-12 p40, IL-6, and TNF-α, and inhibiting the generation of NO. Monoolein can be used in drug delivery and research in the field of inflammatory diseases .
    Monoolein
  • HY-Y0148
    10-Hydroxydecanoic acid
    Inhibitor 99.77%
    10-Hydroxydecanoic acid (10-HDAA) is a saturated fatty acid derived from 10-hydroxy-trans-2-decenoic acid, which can be isolated from royal jelly. 10-Hydroxydecanoic acid exhibits various biological activities, including anti-inflammatory, insecticidal, anti-malarial, and anti-Leishmania properties, as well as enhancing antigen-specific immune responses. The anti-inflammatory effects of 10-Hydroxydecanoic acid are primarily mediated by inhibiting the activation of NF-κB and the translation of interferon regulatory factor 1 (IRF-1), which reduces the production of interleukin 6 (IL-6) and nitric oxide (NO) in inflammatory cells. Additionally, 10-Hydroxydecanoic acid alleviates neuroinflammatory responses through the p53-autophagy pathway and the p53-NLRP3 pathway. Finally, 10-Hydroxydecanoic acid enhances antigen-specific immune responses by promoting the effective uptake of antigens by microfold cells.
    10-Hydroxydecanoic acid
  • HY-P990083
    Tegoprubart
    Inhibitor 99.86%
    Tegoprubart (AT-1501) is a CD40 ligand inhibitor (EC50=100 ng/mL) and immunosuppressant that selectively inhibits the CD40 ligand, a co-stimulatory molecule involved in T cell activation. Tegoprubart suppresses immune rejection, prevents rejection in animal transplantation models, and reduces cell-mediated and antibody-mediated immune responses to create a more immunotolerant environment. Tegoprubart preserves renal function when combined with Mycophenolate (HY-B0421) and Corticosteroids, and maintains graft function in preclinical studies. Tegoprubart is applicable to research related to kidney transplantation and kidney transplant rejection.
    Tegoprubart
  • HY-13687A
    IKK 16 hydrochloride
    Inhibitor 99.95%
    IKK 16 hydrochloride is an orally active IKK inhibitor. IKK 16 hydrochloride shows IC50s of 40 nM, 70 nM, 200 nM, and 50 nM for IKK2, IKK complex, IKK1, and LRRK 2, respectively. IKK 16 hydrochloride is also a pan-PKD inhibitor, inhibiting PKD1, PKD2, and PKD3 with IC50s of 153.9, 115, and 99.7 nM, respectively. IKK 16 hydrochloride is also an ABCB1 inhibitor, interfering with the binding of ABCB1 to its substrates. IKK 16 hydrochloride protects against LPS (HY-D1056)-induced multiple organ dysfunction by reducing the acute inflammatory response induced by endotoxin exposure. IKK 16 hydrochloride can restore renal function and alleviate fibrosis in acute kidney injury. IKK 16 hydrochloride attenuates cardiac dysfunction associated with polymicrobial sepsis in mice with type 2 diabetes mellitus (T2DM) by inhibiting the NF-κB pathway.
    IKK 16 hydrochloride
  • HY-W012732
    Isoquinoline
    Inhibitor 99.58%
    Isoquinoline is an analog of pyridine. Isoquinoline-based alkaloids, such as p-tolyl bisisoquinoline, phthaloyl isoquinoline, and naphthyl isoquinoline, exhibit anticancer activity. Berberine, an isoquinoline alkaloid, exerts anti-inflammatory effects in diabetic mice by downregulating the gene expression ratios of pro-/anti-inflammatory and Th1/Th2 cytokines. Additionally, some isoquinoline-based compounds also possess antidepressant, antibacterial, antimalarial, and anti-HIV activities.
    Isoquinoline
  • HY-P99934
    Eftozanermin alfa
    Inhibitor 98.86%
    Eftozanermin alfa (ABBV-621) is a tumor necrosis factor-related apoptosis-inducing ligand receptor (TRAIL-R) agonist. Eftozanermin alfa is a fusion protein consisting of a mutant immunoglobulin G1-Fc linked to 2 single-chain trimers of TRAIL. Eftozanermin alfa induces apoptosis in tumor cells by activation of death receptors (DR4 receptor and DR5 receptor) with Kds of 780 nM and 635 nM. Eftozanermin alfa can be used for the research of multiple solid and heme malignancies.
    Eftozanermin alfa
  • HY-W040045
    Callistephin chloride
    Inhibitor 98.31%
    Callistephin (Pelargonidin 3-O-glucoside) chloride is an anthocyanin. Callistephin chloride regulates the expression of inflammatory (reducing iNOS/TNF-α/COX-2) and apoptosis-related proteins by inhibiting p38 phosphorylation, and enhances the protective effect of Isoflurane (HY-A0134) on microglial cell damage. Callistephin chloride significantly reduces ROS levels, eliminates DPPH free radicals, protects retinal pigment epithelial cells, and inhibits lipid peroxidation. Callistephin chloride can alleviate glutamate excitotoxicity, reduce neuronal apoptosis, and protect cerebellar granule neurons. Callistephin chloride can inhibit the proliferation and metastasis of breast cancer cells by inducing apoptosis.
    Callistephin chloride
  • HY-119307
    Apratastat
    Inhibitor 99.28%
    Apratastat (TMI-005) is an orally active, non-selective and reversible TACE/MMPs inhibitor, can inhibit inhibit the release of TNF-α. Apratastat has the potential to overcome radiotherapy-resistance in non-small cell lung cancer (NSCLC). Apratastat is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Apratastat
  • HY-118694
    TAPI-0
    Inhibitor
    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-N2392
    Kukoamine A
    Inhibitor 99.88%
    Kukoamine A, a spermine alkaloid, is an orally active and brain-penetrant component found in the root barks of Lycium chinense (L. chinense) Miller. Kukoamine A inhibits purified Crithidia fasciculata trypanothione reductase and soybean lipoxygenase, activates μ-opioid receptor. Kukoamine A can inhibt cancer cell proliferation, migration and invasion, cause G0/G1 phase cell cycle arrest and induce apoptosis. Kukoamine A exerts neuroprotective effect and can induce autophagy . Kukoamine A inhibits LPS (HY-D1056)-induced NO, ROS, PGE2, TNF-α, IL-1β, IL-6 production and COX-2 activity. Kukoamine A reverses palmitic acid-induced insulin resistance, lipid accumulation, and oxidative stress via downregulation of Srebp-1c. Kukoamine A can be used for the research of cancer, infection, inflammation, metabolic and neurological disease, such as glioblastoma and Parkinson's disease.
    Kukoamine A
  • HY-P99445
    Asunercept
    Inhibitor 98.13%
    Asunercept (APG101; CAN008) is a soluble CD95-Fc fusion protein (hIgG1) targeting CD95L. Asunercept disrupts CD95/CD95L signaling by selectively binding to CD95L. Asunercept can be used in the research of glioblastoma multiforme (GBM), myelodysplastic syndrome (MDS), and graft-versus-host disease (GvHD).
    Asunercept
  • HY-132248
    C5 Lenalidomide
    Inhibitor 99.62%
    C5 Lenalidomide is a 5-amino-substituted Thalidomide (HY-14658) analog. C5 Lenalidomide inhibits LPS (HY-D1056)-stimulated TNF-α production.
    C5 Lenalidomide
  • HY-N7493
    N-acetyldopamine
    Inhibitor 99.36%
    N-acetyldopamine is a sepiapterin reductase inhibitor. N-acetyldopamine is a catecholamine that is used by insects as sclerotizing precursors to harden their cuticle. N-acetyldopamine can attenuate LPS-stimulated TNF-α production and superoxide production in THP-1 cells.
    N-acetyldopamine
  • HY-P3023
    Mutanolysin
    Inhibitor
    Mutanolysin is a bacteriolytic agent. Mutanolysin is a muralytic enzyme that can prevent hepatic injury. Mutanolysin can digest the cell wall of S. mutans BHT and shows antibacterial activity. Mutanolysin reduces TNF-α production in isolated Kupffer cells stimulated with peptidoglycan-polysaccharide (PG-APS). Mutanolysin can be used for the researches of infection, inflammation and hepatic injury.
    Mutanolysin
  • HY-W015490
    1,4-Naphthoquinone
    Inhibitor 99.97%
    1,4-Naphthoquinone is an inhibitor with broad-spectrum inhibitory activity targeting DNA polymerase, NF-κB and monoamine oxidase (MAO-A/B), with antibacterial and anti-biofilm efficacy. 1,4-Naphthoquinone is a competitive inhibitor of MAO-B (Ki=1.4 μM) and a non-competitive inhibitor of MAO-A (Ki=7.7 μM). 1,4-Naphthoquinone inhibits DNA polymerase pol α, β, γ, δ, ε, λ with IC50 ranging from 5.57-128 μM. 1,4-Naphthoquinone inhibits tumor cell proliferation, induces apoptosis and necrosis, and has anti-angiogenic and anti-inflammatory activities by inducing oxidative stress, depleting glutathione (GSH), inhibiting DNA polymerase-mediated DNA synthesis and blocking NF-κB nuclear translocation. 1,4-Naphthoquinone can be used in anti-bacterial , anti-tumor and anti-inflammatory studies, including inhibition of melanoma and colon cancer cell growth and endothelial cell function, as well as LPS-induced inflammation models.
    1,4-Naphthoquinone
  • HY-103435
    Vialinin A
    Inhibitor 99.90%
    Vialinin A (Terrestrin A) is a p-terphenyl compound that can be derived from a Chinese edible mushroom. Vialinin A is an inhibitor of ubiquitin-specific peptidase 4 (USP4) and has anti-inflammatory and antioxidant properties. Vialinin A can alleviate cerebral ischaemia-reperfusion injury-induced neurological deficits and neuronal apoptosis. Vialinin A promotes activation of Keap1-Nrf2-ARE signaling pathway and increases the protein degradation of Keap1. Vialinin A possesses various pharmacological activities in cancer, Kawasaki disease, asthma, and pathological scarring. Vialinin A is a potent inhibitor of TNF-α, USP4, USP5, and sentrin/SUMO-specific protease 1 (SENP1). Vialinin A can be studied in reseach for autoimmune diseases, cancer and ischaemic stroke.
    Vialinin A
  • HY-111255A
    SPD304 dihydrochloride
    Inhibitor 99.82%
    SPD304 dihydrochloride 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 dihydrochloride
  • HY-N0507
    Rosavin
    Inhibitor 99.91%
    Rosavin, an orally bioactive phenylpropanoid from Rhodiola rosea L. (RRL), is an adaptogen that enhances the body’s response to environmental stress. Rosavin significantly influences bone tissue metabolism by inhibiting osteoclastogenesis and promoting osteoblast differentiation, also impacts various diseases, demonstrating antidepressant, adaptogenic, and anxiolytic effects in mouse models. Additionally, Rosavin improves survival, reducing intestinal damage in irradiated rats and Ischemia-reperfusion(I/R)-induced cerebral injury in vivo by regulating inflammation and oxidative stress, making it a promising candidate for research in radiation-induced intestinal injury, I/R-induced cerebral injury and osteoporosis.
    Rosavin
  • HY-110036
    GW-405833
    Inhibitor 98.91%
    GW-405833 (L768242) is a potent, selective cannabinoid receptor 2 (CB2) agonist. GW405833 has EC50 and Ki values ​​of 0.65 nM and 3.92 nM for CB2, and EC50 and Ki values ​​of 16.1 μM and 4772 nM for CB1. GW-405833 also exhibits non-competitive CB1 antagonist, exerting its analgesic and and anti-inflammatory effect through a CB1 receptor (rather than CB2) dependent mechanism. GW-405833 can significantly inhibit the production of cAMP stimulated by Forskolin (HY-15371). GW405833 inhibits glycolysis by down-regulating HIF-1α, thereby alleviating acute liver failure (ALF).
    GW-405833
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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