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-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-N0592A
    Demethyleneberberine chloride
    Inhibitor 98.93%
    Demethyleneberberine chloride is a natural mitochondria-targeted antioxidant. Demethyleneberberine chloride alleviates mice colitis and inhibits the inflammatory responses by inhibiting NF-κB pathway and regulating the balance of Th cells. Demethyleneberberine chloride could serve as a AMPK activator for researching non-alcoholic fatty liver disease (NAFLD).
    Demethyleneberberine chloride
  • HY-N0762
    Isobavachin
    Inhibitor 99.88%
    Isobavachin, an antioxidant isaolated from Psoralea corylifolia with a prenyl group at position 8 of ring A, promotes neuronal differentiation and the potential role of its protein prenylation.
    Isobavachin
  • HY-N0589
    Dehydrodiisoeugenol
    Inhibitor 99.98%
    Dehydrodiisoeugenol is isolated from Myristica fragrans Houtt, shows anti-inflammatory and anti-bacterial actions. Dehydrodiisoeugenol inhibits LPS- stimulated NF-κB activation and cyclooxygenase (COX)-2 gene expression in murine macrophages.
    Dehydrodiisoeugenol
  • HY-122778
    δ-Tocotrienol
    Inhibitor 98.10%
    δ-Tocotrienol is a Vitamin E in vegetables, fruits, seeds, nuts, grains and oils. Vitamin E has become well known for its role as an antioxidant, in lowering cholesterol and other lipids, as a neuroprotective and anticancer agent, and in cardiovascular disease protection.
    δ-Tocotrienol
  • HY-N0231
    Bavachalcone
    Inhibitor 99.95%
    Bavachalcone is a potent inducer of apoptosis. Bavachalcone exerts anticancer activity by promoting autophagy and apoptosis in HepG2 cells. Bavachalcone acts as an anti-neuroinflammatory and antidepressant through the NF-κB pathway. Bavachalcone inhibits osteoclasts by interfering with ERK and Akt signaling pathways and the expression of c-Fos and NFATc1. Bavachalcone exhibits a significant inhibitory effect on baculovirus-expressed BACE-1 in vitro.
    Bavachalcone
  • 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-N0253
    Hederacoside C
    Inhibitor 99.85%
    Hederacoside C (Kalopanaxsaponin B) is an ingredient that can be obtained mainly from ivy leaves. Hederacoside C mediates inflammation by inhibiting activation of MAPK/NF-κB and its downstream signaling pathway. Hederacoside C has anti-inflammatory and antibacterial activity.
    Hederacoside C
  • HY-N0119
    Naringin Dihydrochalcone
    Inhibitor 99.65%
    Naringin Dihydrochalcone is an artificial sweetener derived from naringin. Naringin is a major flavanone glycoside obtained from tomatoes, grapefruits, and many other citrus fruits. Naringin exhibits biological properties such as antioxidant, anti-inflammatory, and antiapoptotic activities. Naringin suppresses NF-κB signaling pathway.
    Naringin Dihydrochalcone
  • HY-13010
    Laquinimod
    Inhibitor 99.96%
    Laquinimod (ABR-215062), an orally available carboxamide derivative, is a potent immunomodulator which prevents neurodegeneration and inflammation in the central nervous system. Laquinimod reduces astrocytic NF-κB activation to protect from Cuprizone-induced demyelination. Laquinimod has the potential for relapsing remitting (RR) and chronic progressive (CP) forms of multiple sclerosis (MS; RRMS or CPMS) as well as neurodegenerative diseases research.
    Laquinimod
  • HY-P9958A
    Denosumab (anti-TNFSF11)
    Inhibitor
    Denosumab (anti-TNFSF11) is a human monoclonal antibody that targets the protein RANKL. Denosumab binds to the receptor activator of nuclear factor kappa-B ligand (RANKL) and prevents its binding to the RANK receptor (KD of 0.003 nM for human RANKL). Denosumab promotes proliferation and spermatogenesis. Denosumab prevents bone resorption through inhibition of the NF-κB pathway. Denosumab can be used in bone-related studies.
    Denosumab (anti-TNFSF11)
  • HY-N1410
    Triacetylresveratrol
    Inhibitor 99.58%
    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
  • HY-18325
    AN-3485
    Inhibitor
    AN-3485 is a benzoxaborole analogue and an orally active antagonist of the Toll-like pathway. AN-3485 can inhibit TLR-mediated inflammatory cytokine secretion and has significant anti-inflammatory activity. In addition, AN-3485 also has certain anti-tumor activity.
    AN-3485
  • HY-N2543
    Damascenone
    Inhibitor 99.26%
    Damascenone ((E/Z)-Damascenone) is an active compound of Epipremnum pinnatum with anti-inflammatory activity. Damascenone is a mixture complex of E-isomer-Damascenone and Z-isomer Damascenone.
    Damascenone
  • HY-155998
    NF-κB-IN-11
    Inhibitor 98.42%
    NF-κB-IN-11 (Compound 3i) is a NF-κB inhibitor. NF-κB-IN-11 inhibits TNF-α induced activation of NF-κB pathway, and inhibits nuclear translocation of NF-κB. NF-κB-IN-11 down-regulates the expression levels of phosphor-IKK, IκBα, and NF-κB p65. NF-κB-IN-11 has anti-inflammatory activity, and alleviates dextran sulfate sodium-induced colitis in mice. NF-κB-IN-11 (p.o.) shows a MTD more than 1852 mg/kg in mice acute toxicity assay.
    NF-κB-IN-11
  • 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-N3945
    Glaucine
    Inhibitor 99.57%
    Glaucine (O,O-Dimethylisoboldine) is an alkaloid extracted from Glaucium flavum that possesses various activities, including cough relief, bronchodilation, anti-inflammatory effects, analgesia, antipyretic properties, and anticancer effects. Glaucine acts as a selective and orally active inhibitor of phosphodiesterase 4 (PDE4), with a Ki of 3.4 µM in human bronchial tissues and polymorphonuclear leukocytes. Glaucine induces relaxation of human isolated bronchi by antagonizing calcium channels. Additionally, Glaucine inhibits the activation of NF-κB, leading to a reduction in the expression of the MMP-9 gene, thereby suppressing the migration and invasion of breast cancer cells. Therefore, Glaucine holds potential for research in asthma and breast cancer.
    Glaucine
  • HY-W013812
    Ethyl linoleate
    Inhibitor 99.69%
    Ethyl linoleate (Linoleic Acid ethyl ester) is an orally active unsaturated fatty acid. Ethyl linoleate inhibits the Akt/GSK3β/β-catenin signaling pathway and the activation of NF-κB. Ethyl linoleate induces heme oxygenase-1 and inhibits tyrosinase. Ethyl linoleate has whitening and anti-inflammatory effects. Ethyl linoleate promotes compound absorption. Ethyl linoleate has a significant influence on atherosclerosis. Ethyl linoleate is used in the research of inflammatory diseases. Ethyl linoleate can be used in cosmetics
    Ethyl linoleate
  • HY-18620
    DZ2002
    Inhibitor 99.68%
    DZ2002 is an orally active, reversible and low-cytotoxic type III SAHH inhibitor (Ki=17.9 nM), with good immunosuppressive activity. DZ2002 prevents the development of experimental dermal fibrosis by reversing the profibrotic phenotype of various cell types. DZ2002 can be used in studies of autoimmune diseases such as lupus syndrome and systemic sclerosis.
    DZ2002
  • HY-N0106
    (Rac)-Salvianic acid A sodium
    Inhibitor ≥98.0%
    (Rac)-Salvianic acid A sodium is the racemic form of Salvianic acid A (HY-N1913). Salvianic acid A is an orally active phenolic compound that induces Nrf2/HO-1 activation and inhibits the NF-κB pathway, and it also activates the mitochondrial antioxidant defense system (Mitochondrial Metabolism). Salvianic acid A exhibits anti-inflammatory, antioxidant, and anti-apoptotic properties (Apoptosis), demonstrating potential for research into inflammation and cardiovascular diseases.
    (Rac)-Salvianic acid A sodium
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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