1. Signaling Pathways
  2. NF-κB
  3. NF-κB

NF-κB

Nuclear factor-κB; Nuclear factor-kappaB

NF-κB (Nuclear factor kappa-light-chain-enhancer of activated B cells) is a protein complex that controls transcription of DNA. NF-κB is found in almost all animal cell types and is involved in cellular responses to stimuli such as stress, cytokines, free radicals, ultraviolet irradiation, oxidized LDL, and bacterial or viral antigens. NF-κB plays a key role in regulating the immune response to infection. Incorrect regulation of NF-κB has been linked to cancer, inflammatory, and autoimmune diseases, septic shock, viral infection, and improper immune development. NF-κB has also been implicated in processes of synaptic plasticity and memory. There are five proteins in the mammalian NF-κB family: NF-κB1, NF-κB2, RelA, RelB, c-Rel.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-N1431
    Tabersonine
    Inhibitor 98.14%
    Tabersonine is a selective, orally active NLRP3 inhibitor. Tabersonine directly binds to the NACHT domain of NLRP3, inhibiting its ATPase activity and oligomerization, thereby blocking ASC spot formation and caspase-1 activation, and reducing the release of pro-inflammatory cytokines such as IL-1β. Tabersonine also inhibits K63-linked ubiquitination of TRAF6, blocking NF-κB, PI3K/Akt, and p38 MAPK signaling pathways. Tabersonine can inhibit inflammatory responses, induce apoptosis of liver cancer cells through mitochondrial pathways and death receptor pathways, reduce mitochondrial membrane potential, promote cytochrome c release, and activate caspase proteins. Tabersonine is mainly used in the study of NLRP3-driven inflammatory diseases (such as acute lung injury, sepsis, peritonitis) and tumors such as liver cancer.
    Tabersonine
  • HY-160477
    DC-SX029
    Inhibitor 98.07%
    DC-SX029 is a potent SNX10 protein-protein interaction (PPI) inhibitor with oral activity with an estimated KD constant of ~0.935 μM by surface plasmon resonance (SPR). DC-SX029 blocks the SNX10-PIKfyve interaction, thereby decreased the TBK1/c-Rel signaling activation. DC-SX029 does not affect the protein level of SNX10. DC-SX029 has the potential for inflammatory bowel disease (IBD) research.
    DC-SX029
  • HY-N1508
    Ecliptasaponin A
    Inhibitor 99.50%
    Ecliptasaponin A is an orally active pentacyclic triterpenoid saponin. Ecliptasaponin A exerts anti-tumor activity by activating ASK1/JNK pathway, inducing apoptosis and autophagy in lung cancer cells. Ecliptasaponin A exerts anti-inflammatory/anti-fibrotic effects and protects the cardiovascular system by inhibiting the HMGB1/TLR4/NF-κB pathway, and the expression of COX-2 and MMP-9. Ecliptasaponin A can enhance SOD activity, reduce MDA levels, and alleviate oxidative stress damage. Ecliptasaponin A exerts chondroprotective effects by inhibiting the expression of MMP13 and regulating inflammatory factors. Ecliptasaponin A improves ovarian function and regulates sex hormones by upregulating the expression of ESR1 receptors.
    Ecliptasaponin A
  • HY-N0631
    Cornuside
    Inhibitor 99.99%
    Cornuside is a secoiridoid glucoside isolated from the fruit of Cornus officinalis Sieb. et Zucc., which is a traditional oriental medicine for treating inflammatory diseases and invigorating blood circulation. Cornuside inhibits mast cell-mediated allergic response by down-regulating MAPK and NF-κB signaling pathways. Cornuside has anti-allergic effects in vivo and in vitro which suggests a therapeutic application of this agent in inflammatory allergic diseases.
    Cornuside
  • HY-N0513
    Loganic acid
    Inhibitor 99.05%
    Loganic acid is an iridoid isolated from cornelian cherry fruits. Loganic acid inhibits NF-κB signaling pathway, activates Nrf2 signaling pathway, exhibits anti-inflammatory activity. Loganic acid can modulate diet-induced atherosclerosis and redox status. Loganic acid has strong free radical scavenging activity and remarkable cyto-protective effect against heavy metal mediated toxicity. Loganic acid is orally active.
    Loganic acid
  • HY-121508
    (E/Z)-IT-603
    Inhibitor 99.91%
    (E/Z)-IT-603 is a mixture of E-IT-603 and Z-IT-603 (IT-603). (E/Z)-IT-603 is also an IĸBα/c-Rel inhibitor. IT-603 is a c-Rel inhibitor with an IC50 of 3 μM. IT-603 has anti-tumor activity. (E/Z)-IT-603 is a promising modulator of T-cell responses in the context of graft-versus-host disease (GVHD) and malignant diseases.
    (E/Z)-IT-603
  • HY-N0665
    Specnuezhenide
    Inhibitor 99.52%
    Specnuezhenide ((8E)-Nuezhenide) is isolated from the fruits of?Ligustrum lucidum. Specnuezhenide ((8E)-Nuezhenide) can inhibit IL-1β-induced inflammation in chondrocytes via inhibition of NF-κB and wnt/β-catenin signaling. Specnuezhenide ((8E)-Nuezhenide) exerts anti-inflammatory effects in a rat model of osteoarthritis (OA).
    Specnuezhenide
  • HY-16561A
    cis-Resveratrol
    Inhibitor 98.83%
    cis-Resveratrol exhibits signifcant antiviral activity. cis-Resveratrol inhibits enteroviruses with IC50s of 12.2 µM and 37.6 µM for coxsackievirus B3 (CVB3) and enterovirus 71 (EV71), respectively. cis-Resveratrol is the inhibitor for NF-κB signaling pathway.
    cis-Resveratrol
  • HY-U00450
    4-O-Methyl honokiol
    Inhibitor 98.18%
    4-O-Methyl honokiol is a natural neolignan isolated from Magnolia officinalis, acts as a PPARγ agonist, and inhibtis NF-κB activity, used for cancer and inflammation research.
    4-O-Methyl honokiol
  • HY-101259
    BMS-195614
    Inhibitor 99.5%
    BMS-195614 (BMS 614) is an orally active neutral RARα-selective antagonist with a Ki of 2.5 nM. BMS-195614 restores the expression of Bcl2. BMS-195614 inhibits the transactivation of NF-κB, AP-1 and PPAR. BMS-195614 downregulates the expression of IL-6 and VEGF. BMS-195614 reduces blue light-induced phototoxicity and inhibits cell migration. BMS-195614 modulates inflammation and angiogenesis.
    BMS-195614
  • HY-W229874
    EN106
    Inhibitor 99.92%
    EN106 is a potent inhibitor of FEMIB. EN106 is a cysteine-reactive covalent ligand. EN106 disrupts recognition of the key reductive stress substrate of FEM1B, FNIP1. EN106 reduces oxidative stress and rescues high glucose-induced impaired angiogenesis in HUVECs.
    EN106
  • HY-N2995
    Poricoic acid A
    Modulator 99.66%
    Poricoic acid A can be isolated from Poria cocos. Poricoic acid A is an orally active anti-tumor agent. Poricoic acid A enhances melatonin inhibition of AKI-to-CKD transition by regulating Gas6/AxlNFκB/Nrf2 axis. Poricoic acid A also attenuatea fibroblast activation and abnormal extracellular matrix remodeling in renal fibrosis by activating AMPK and inhibiting Smad3. Poricoic acid A significantly reduces the magnitude of rise in serum creatinine and urea levels in rat model when combined with Melatonin. Poricoic acid A ameliorates renal fibrosis and podocyte injury by attenuating oxidative stress and inflammation through regulating NF-κB and Nrf2 in IRI rodent model in combination with Melatonin.
    Poricoic acid A
  • HY-N0809
    Sesamolin
    Inhibitor 99.78%
    Sesamolin, isolated from Sesamum indicum, has antioxidative activity, Sesamolin inhibits lipid peroxidation and shows neuroprotection effect. Sesamolinl potently inhibits MAPK cascades by preventing phosphorylation of JNK, p38 MAPKs, and caspase-3 but not ERK-MAPK expression. Sesamolin is orally active.
    Sesamolin
  • HY-145532
    S-Allylmercaptocysteine
    Inhibitor
    S-allylmercaptocysteine, an organic sulfur compound extracted from garlic, has anti-inflammatory and anti-oxidative effects for various pulmonary diseases. S-allylmercaptocysteine achieves its anti-cancer effect through a variety of pathways such as inducing the apoptosis of cancer cells through the TGF-β signaling pathway, or reducing the NF-κB activity and up-regulating Nrf2 to achieve the effects of anti-inflammation and anti-oxidation.
    S-Allylmercaptocysteine
  • HY-101364
    CHPG
    Activator 99.51%
    CHPG is a selective mGluR5 agonist, and attenuates SO2-induced oxidative stress and inflammation through TSG-6/NF-κB pathway in BV2 microglial cells. CHPG protects against traumatic brain injury (TBI) in vitro and in vivo by activation of the ERK and Akt signaling pathways.
    CHPG
  • HY-B0612
    Lercanidipine
    Inhibitor 99.65%
    Lercanidipine is a third-generation, lipophilic, brain-penetrant, vascular-selective and orally active dihydropyridine-calcium channel blocker with a pIC50 of 7.74 (converts from μM). Lercanidipine has long lasting antihypertensive action as well as reno- and neuro-protective effect. Lercanidipine also shows anti-oxidant, anti-inflammatory and anti-apoptotic properties. Lercanidipine can be used in cardiovascular and neurological research.
    Lercanidipine
  • HY-P99143
    Anti-Mouse NK1.1 Antibody (PK136)
    Inhibitor
    Anti-Mouse NK1.1 Antibody (PK136) is an anti-mouse NK1.1 IgG2a monoclonal antibody. Anti-Mouse NK1.1 Antibody (PK136) can deplete natural killer (NK) cells. Anti-Mouse NK1.1 Antibody (PK136) inhibits the JAK-STAT and NF-κB signaling pathways. Anti-Mouse NK1.1 Antibody (PK136) can be used for research on inflammation conditions such as non-alcoholic steatohepatitis (NASH).
    Anti-Mouse NK1.1 Antibody (PK136)
  • HY-114519
    Helenalin acetate
    Inhibitor 99.55%
    Helenalin acetate, a natural NF-κB inhibitor, is a potent C/EBPβ inhibitor. Helenalin acetate has anti-inflammatory and anticancer activities.
    Helenalin acetate
  • HY-N2083
    Handelin
    Inhibitor 99.54%
    Handelin is a guaianolide dimer from Chrysanthemum boreale that has potent anti-inflammatory activity by down-regulating NF-κB signaling and pro-inflammatory cytokine production.
    Handelin
  • HY-N1410
    Triacetylresveratrol
    Inhibitor 99.11%
    Triacetylresveratrol, an acetylated analog of Resveratrol. Triacetylresveratrol decreases the phosphorylation of STAT3 and NF-κB in a dose- and time- dependent manner in PANC-1 and BxPC-3 cells. Anticancer effects.
    Triacetylresveratrol
Cat. No. Product Name / Synonyms Application Reactivity

NF-κB transcription factors are critical regulators of immunity, stress responses, apoptosis and differentiation. In mammals, there are five members of the transcription factor NF-κB family: RELA (p65), RELB and c-REL, and the precursor proteins NF-κB1 (p105) and NF-κB2 (p100), which are processed into p50 and p52, respectively. NF-κB transcription factors bind as dimers to κB sites in promoters and enhancers of a variety of genes and induce or repress transcription. NF-κB activation occurs via two major signaling pathways: the canonical and the non-canonical NF-κB signaling pathways[1]

 

The canonical NF-κB pathway is triggered by signals from a large variety of immune receptors, such as TNFR, TLR, and IL-1R, which activate TAK1. TAK1 then activates IκB kinase (IKK) complex, composed of catalytic (IKKα and IKKβ) and regulatory (NEMO) subunits, via phosphorylation of IKKβ. Upon stimulation, the IKK complex, largely through IKKβ, phosphorylates members of the inhibitor of κB (IκB) family, such as IκBα and the IκB-like molecule p105, which sequester NF-κB members in the cytoplasm. IκBα associates with dimers of p50 and members of the REL family (RELA or c-REL), whereas p105 associates with p50 or REL (RELA or c-REL). Upon phosphorylation by IKK, IκBα and p105 are degradated in the proteasome, resulting in the nuclear translocation of canonical NF-κB family members, which bind to specific DNA elements, in the form of various dimeric complexes, including RELA-p50, c-REL-p50, and p50-p50. Atypical, IKK-independent pathways of NF-κB induction also provide mechanisms to integrate parallel signaling pathways to increase NF-κB activity, such as hypoxia, UV and genotoxic stress.

 

The non-canonical NF-κB pathway is induced by certain TNF superfamily members, such as CD40L, BAFF and lymphotoxin-β (LT-β), which stimulates the recruitment of TRAF2, TRAF3, cIAP1/2 to the receptor complex. Activated cIAP mediates K48 ubiquitylation and proteasomal degradation of TRAF3, resulting in stabilization and accumulation of the NFκB-inducing kinase (NIK). NIK phosphorylates and activates IKKα, which in turn phosphorylates p100, triggering p100 processing, and leading to the generation of p52 and the nuclear translocation of p52 and RELB[2][3].

 

Reference:

[1]. Oeckinghaus A, et al. The NF-kappaB family of transcription factors and its regulation.Cold Spring Harb Perspect Biol. 2009 Oct;1(4):a000034. 
[2]. Taniguchi K, et al. NF-κB, inflammation, immunity and cancer: coming of age. Nat Rev Immunol. 2018 May;18(5):309-324.
[3]. Perkins ND,et al. Integrating cell-signalling pathways with NF-kappaB and IKK function. Nat Rev Mol Cell Biol. 2007 Jan;8(1):49-62.

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