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. 상품명 효과 Purity Chemical Structure
  • HY-B0900
    Anethole
    Inhibitor 99.81%
    Anethole is a type of orally active aromatic compound that is widely found in nature and used as a flavoring agent. Anethole possesses anticancer, anti-inflammatory, antioxidant, antibacterial, antifungal, anesthetic, estrogenic, central nervous system depressant, hypnotic, insecticidal, and gastroprotective effects. Anethole can be used in the study of oxidative stress-related skin diseases and prostate cancer.
    Anethole
  • HY-N2609
    7,4'-Dihydroxyflavone
    Inhibitor 99.64%
    7,4'-Dihydroxyflavone (7,4'-DHF) is a flavonoid, which can be isolated from Glycyrrhiza uralensis. 7,4'-Dihydroxyflavone is eotaxin/CCL11 inhibitor and CBR1 inhibitor (IC50=0.28 μM). 7,4'-Dihydroxyflavone has the ability to consistently suppress eotaxin production and prevent dexamethasone (Dex)‐paradoxical adverse effects on eotaxin production. 7,4'-Dihydroxyflavone (7,4'-DHF) inhibits MUC5AC gene expression, mucus production and secretion via regulation of NF-κB, STAT6 and HDAC2.7,4'-Dihydroxyflavone (7,4'-DHF) decreases phorbol 12-myristate 13-acetate (PMA) stimulated NCI-H292 human airway epithelial cell MUC5AC gene expression and mucus production with IC50 value of 1.4 µM.
    7,4'-Dihydroxyflavone
  • HY-N1193
    Sulfuretin
    Inhibitor 99.36%
    Sulfuretin inhibits the inflammatory response by suppressing the NF-κB pathway. Sulfuretin can be used for the research of allergic airway inflammation. Sulfuretin reduces oxidative stress, platelet aggregation, and mutagenesis. Sulfuretin is a competitive and potent inhibitor of monophenolase and diphenolase activities with the IC50 of 13.64 μM.
    Sulfuretin
  • HY-N0222
    Avicularin
    Inhibitor 99.80%
    Avicularin is an orally active flavonoid. Avicularin inhibits NF-κB (p65), COX-2 and PPAR-γ activities. Avicularin has anti-inflammatory, anti-infectious anti-allergic, anti-oxidant, hepatoprotective, and anti-tumor activities.
    Avicularin
  • HY-N0257
    Epimedin A
    Inhibitor 99.43%
    Epimedin A, one of the main flavonoid active components in Herba Epimedii, is orally active. Epimedin A can inhibit osteoclastogenesis, differentiation, and bone resorption. Epimedin A also possesses anti-inflammatory activity. Epimedin A can be used in the research of osteoporosis and inflammatory diseases.
    Epimedin A
  • HY-W016412
    Coenzyme Q0
    Inhibitor 99.79%
    Coenzyme Q0 (CoQ0) is a potent, oral active ubiquinone compound can be derived from Antrodia cinnamomea. Coenzyme Q0 induces apoptosis and autophagy, suppresses of HER-2/AKT/mTOR signaling to potentiate the apoptosis and autophagy mechanisms. Coenzyme Q0 regulates NFκB/AP-1 activation and enhances Nrf2 stabilization in attenuation of inflammation and redox imbalance. Coenzyme Q0 has anti-angiogenic activity through downregulation of MMP-9/NF-κB and upregulation of HO-1 signaling.
    Coenzyme Q0
  • HY-N1363
    Royal Jelly acid
    Inhibitor 99.95%
    Royal Jelly Acid ((E)-Queen Bee Acid) is a major fatty acid found in royal jelly with oral bioavailability, exhibiting anti-inflammatory, anticancer, antimalarial, antiprotozoal, and neuroregulatory activities. Royal Jelly Acid can be used for research in various fields, including cancer, infections, immune inflammation, and neurological diseases.
    Royal Jelly acid
  • HY-N0041
    Ginsenoside Rb3
    Inhibitor 99.87%
    Ginsenoside Rb3 is extracted from steamed Panax ginseng C. A. Meyer. Ginsenoside Rb3 exhibits inhibitory effect on TNFα-induced NF-κB transcriptional activity with an IC50 of 8.2 μM in 293T cell lines. Ginsenoside Rb3 also inhibits the induction of COX-2 and iNOS mRNA.
    Ginsenoside Rb3
  • HY-D0205A
    Carbocisteine
    Inhibitor 98.0%
    Carbocisteine is an orally active mucolytic agent. Carbocisteine attenuates the phosphorylation of NF-κB p65 and ERK1/2. Carbocisteine modulates Nrf2/HO-1 and NFκB interplay. Carbocisteine inhibits Apoptosis. Carbocisteine is used in chronic obstructive pulmonary disease (COPD) research.
    Carbocisteine
  • HY-N1949
    Homoplantaginin
    Inhibitor 99.70%
    Homoplantaginin is a flavonoid from a traditional Chinese medicine Salvia plebeia with antiinflammatory and antioxidant properties. Homoplantaginin could inhibit TNF-α and IL-6 mRNA expression, IKKβ and NF-κB phosphorylation.
    Homoplantaginin
  • HY-N0803
    Myrcene,75% (stabilized with BHT)
    Inhibitor
    Myrcene (β-Myrcene) is a type of aromatic compound that inhibits TNFα and NF-κB activity. Myrcene has anti-invasive action, inhibits cell cycle, and leads to cancer cell apoptosis. Myrcene has strong blood protection effect, anti-inflammation, and anti-inflammatory activity.
    Myrcene,75% (stabilized with BHT)
  • HY-N0440
    Germacrone
    Inhibitor 99.76%
    Germacrone is a sesquiterpene compound with multiple biological activities. Germacrone inhibits the H1N1 and H3N2 influenza A virus and the influenza B virus. Germacrone blocks the progressionof arthritis by regulating Th1/Th2 balance and inhibiting NF-κB signaling. Germacrone can arrest the cell cycle at G0/G1 and G2/M phases and induce apoptosis in breast cancer cells. Germacrone inhibits 5α-reductase and has anti-androgenic effect. Germacrone has neuroprotective functions and can be used for the study of traumatic brain injury (TBI). Germacrone also has antioxidant activity.
    Germacrone
  • HY-N0526
    2"-O-Galloylhyperin
    Inhibitor 99.57%
    2''-O-Galloylhyperin is an active natural compound with anti‑inflammatory, antioxidant, anti‑adipogenic, antifibrotic, and cytostatic activities. 2''-O-Galloylhyperin upregulates SIRT1/Nrf2 signaling, inhibits NF-κB and MAPK (ERK1/2, p38, JNK) phosphorylation, suppresses TSHR activation, reduces ROS accumulation, and enhances SOD and GSH-Px activities. 2''-O-Galloylhyperin protects against LPS-induced tissue injury, enhances survival, and inhibits adipogenesis and fibrosis. 2"-O-Galloylhyperin can be used for the research of sepsis, acute lung injury, and thyroid eye disease.
    2
  • HY-N2056
    11-​Keto-​beta-​boswellic acid
    Inhibitor 99.90%
    11-Keto-beta-boswellic acid (11-Keto-β-boswellic acid) is a pentacyclic triterpenic acid of the oleogum resin from the bark of the Boswellia serrate tree, popularly known as Indian Frankincense. 11-Keto-beta-boswellic acid has the anti-inflammatory activity is primarily due to inhibit 5-lipoxygenase (5-LOX) and subsequent leukotriene and nuclear factor-kappa B (NF-κB) activation and tumor necrosis factor alpha generation production.
    11-​Keto-​beta-​boswellic acid
  • HY-Y1267D
    Magnesium sulfate, for cell culture
    Inhibitor 99.0%
    Magnesium sulfate, for cell culture is a bioreagent. Magnesium sulfate is a calcium antagonist and a potent L-type calcium channel inhibitor, as well as a tocolytic. Magnesium sulfate has anti-inflammatory, anticonvulsant, vasodilatory, and neuroprotective effects. Magnesium sulfate can be used in the research of diseases such as preeclampsia/eclampsia.
    Magnesium sulfate, for cell culture
  • HY-N0390S6
    L-Glutamine-13C5,15N2
    Inhibitor 98.0%
    L-Glutamine-13C5,15N2 is the 13C- and 15N-labeled L-Glutamine (HY-N0390). L-Glutamine is an orally active nutritional agent and cellular metabolism regulator. L-Glutamine is taken up in a Na+-dependent manner and targets multiple key molecules including glutaminase, mTORC1, NF-κB, STAT-3 and HIF-1α. L-Glutamine enhances glutaminolytic catabolism, drives the conversion of glutamate to α-ketoglutarate, thereby regulating gene expression, integrating metabolic signals, mediating glutamine flux and maintaining redox homeostasis. L-Glutamine also promotes cell proliferation, osteogenic differentiation and fracture healing, exerts neuroprotective and cardioprotective effects, and inhibits osteoarthritis. L-Glutamine can be applied to research related to osteoporosis, osteoarthritis, ischemic stroke and acute cantharidin-induced cardiotoxicity.
    L-Glutamine-<sup>13</sup>C<sub>5</sub>,<sup>15</sup>N<sub>2</sub>
  • HY-N0589
    Dehydrodiisoeugenol
    Inhibitor 99.98%
    Dehydrodiisoeugenol is an orally active anti-inflammatory and anti-tumor agent. Dehydrodiisoeugenol inhibits the proliferation of colorectal cancer cells, and induces apoptosis, autophagy, endoplasmic reticulum stress and cell cycle arrest. Dehydrodiisoeugenol also exerts anti-inflammatory effects by inhibiting the activation of NF-κB and the expression of COX-2. Dehydrodiisoeugenol can be used in the research related to colorectal cancer, inflammatory diseases and ulcerative colitis.
    Dehydrodiisoeugenol
  • HY-N0267
    Hypaconitine
    Inhibitor 99.49%
    Hypaconitine inhibits the KCNH2 current with an IC50 of 8.1 nM, and exhibits cardiotoxicity. Hypaconitine inhibits TGF-β1-induced epithelial-mesenchymal transition (EMT) in A549 cell through the inhibition of NF-κB nuclear translocation. Hypaconitine acts as the neuromuscular blocker. Hypaconitine is orally active.
    Hypaconitine
  • HY-P1684
    Peptide P60
    Inhibitor 98.39%
    Peptide P60 is a FOXP3 inhibitor. Peptide P60 reduces the nuclear translocation of FOXP3 and impairs FOXP3-mediated inhibition of NF-κB and NFAT activity. Peptide P60 inhibits the immunosuppressive activity of regulatory T cells and restores the proliferation and activation of effector T cells. Peptide P60 induces lymphoproliferative autoimmune syndrome in neonatal ICR mice and reduces the number of CD4+CD25+Foxp3+ T cells in the spleen. Peptide P60 enhances the efficacy of AH1 (HY-P4193) peptide vaccine and recombinant adenovirus-based HCV NS3 vaccine in BALB/c mice, including protective effects against CT26 tumor implantation. Peptide P60 can be used in studies related to tumor immunity, viral infection and lymphoproliferative autoimmune syndrome.
    Peptide P60
  • HY-121705
    Propionyl-L-carnitine
    Inhibitor
    Propionyl-L-carnitine is an orally active L-carnitine derivative. Propionyl-L-carnitine has a high affinity for muscle L-carnitine transferase. Propionyl-L-carnitine increases Apoptosis, Bax, and reduces NF-κB, VCAM-1, MCP-1, and survivin. Propionyl-L-carnitine activates Src kinase, Akt, induces p-AMPK and nitric oxide synthesis. Propionyl-L-carnitine alleviates cardiovascular disease, obesity, and colitis.
    Propionyl-L-carnitine
Cat. No. 상품명 / 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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