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-W012977
    3,3-Dimethyl-1-butanol
    Inhibitor 99.56%
    3,3-Dimethyl-1-butanol (DMB) is an orally active inhibitor of trimethylamine (TMA) and trimethylamine N-oxide (TMAO). 3,3-Dimethyl-1-butanol inhibits the signaling pathway of p65 NF-κB and TGF-β1/Smad3. 3,3-Dimethyl-1-butanol has potential applications in cardiovascular disease (CVD).
    3,3-Dimethyl-1-butanol
  • HY-14806B
    Teneligliptin hydrobromide hydrate
    Inhibitor 99.97%
    Teneligliptin (MP-513) hydrobromide hydrate is an orally active and selective dipeptidyl peptidase 4 (DPP-4) inhibitor (IC50s: 0.37 and 0.29 nM for the human and rat DPP-4, respectively). Teneligliptin hydrobromide hydrate improves blood glucose levels and can be used in researches related to type 2 diabetes mellitus.
    Teneligliptin hydrobromide hydrate
  • HY-119970
    Helenalin
    Inhibitor 99.92%
    Helenalin is an anti-inflammatory sesquiterpene lactone. Helenalin selectively inhibits transcription factor NF-κB by directly targeting p65. Helenalin has alkylating activity, targets the cysteine sulfhydryl groups in the p65 subunit of NF-κB, thereby inhibits its DNA binding.
    Helenalin
  • HY-B1971
    Deltamethrin
    99.93%
    Deltamethrin (Decamethrin) is an orally active synthetic pyrethroid insecticide. Deltamethrin induces oxidative stress and results in inflammation and apoptosis via inhibiting Nrf2/HO-1 pathway. Deltamethrin has an anticancer effect by inducing apoptosis. Deltamethrin can be used extensively in pest control.
    Deltamethrin
  • HY-100594
    EUK-134
    Inhibitor 98.27%
    EUK-134, a synthetic superoxide dismutase and catalase mimetic, protects rat kidneys from ischemia-reperfusion-induced damage. EUK-134 is a superoxide dismutase (SOD) mimetics (SODm) with catalase activity. EUK-134 is a mitoprotective antioxidant. EUK-134 reduces the expression of NF-κB, MDA level, and protein carbonylation in H9C2 cells.
    EUK-134
  • HY-126741
    Azadirachtin
    Inhibitor 99.06%
    Azadirachtin is an oral active triterpenoid compound with anticancer, antimalarial, anti-inflammatory, and insecticidal activities. Azadirachtin induces cell apoptosis through the mitochondrial pathway (by inhibiting Bcl-2/Bax ratio or activating Apaf-1 and caspase-3) or through death receptors (by inhibiting TNFR activation). Additionally, Azadirachtin exerts its anti-inflammatory effects by inhibiting NF-кB signaling pathway activation, and it exhibits insecticidal activity by inducing apoptosis in insect cells.
    Azadirachtin
  • HY-N0847
    Micheliolide
    Inhibitor 99.77%
    Micheliolide is a sesquiterpene lactone with anti-cancer and anti-inflammatory effects, which is derived from Michelia compressa and Michelia champaca. Micheliolide can attenuate high glucose-stimulated NF-κB activation, IκBα degradation, and the expression of MCP-1, TGF-β1, and FN in mouse mesangial cells. Micheliolide inhibits LPS (HY-D1056)-induced activation of NF-κB and PI3K/Akt/p70S6K pathways to play an anti-inflammatory role. Micheliolide inhibits dextran sodium sulphate (DSS) (HY-116282)-induced inflammatory intestinal disease, colitis-associated cancer and rheumatic arthritis.
    Micheliolide
  • HY-N0716A
    Berberine hemisulfate
    Inhibitor 99.63%
    Berberine hemisulfate is the hemisulfate form of Berberine (HY-N0716). Berberine hemisulfate is an alkaloid isolated from the Chinese herbal medicine Huanglian. Berberine hemisulfate exhibits anti-inflammatory, antibiobic, antitumor, cardiovascular protective and neuroprotective activity.
    Berberine hemisulfate
  • HY-122942
    Moracin M
    Inhibitor 98.99%
    Moracin M is a phenolic component that can be isolated from Mori Cortex, is a potent phosphodiesterase-4 (PDE4) inhibitor with IC50 values of 2.9, 4.5, >40, and >100 μM for PDE4D2, PDE4B2, PDE5A1, and PDE9A2, respectively. Moracin M has anti-inflammatory activity.
    Moracin M
  • HY-107574
    TC-E 5003
    Modulator 98.03%
    TC-E 5003 is a selective protein arginine methyltransferase 1 (PRMT1) inhibitor with an IC50 of 1.5 µM against hPRMT1. TC-E 5003 modulates the lipopolysaccharide (LPS) (HY-D1056)-induced AP-1 and NF-κB signaling pathways with anti-inflammatory properties. TC-E 5003 also upregulates the expression of Ucp1 and Fgf21, activates protein kinase A signaling and lipolysis in primary subcutaneous adipocytes from both mouse and humans. TC-E 5003 is promising for research of obesity and associated metabolic disorders, oxidative stress, inflammation and cancers.
    TC-E 5003
  • HY-P1439A
    RS 09 TFA
    Activator 99.87%
    RS 09 TFA is an LPS (HY-D1056) peptide mimic and TLR4 agonist. RS 09 TFA can bind to TLR-4 and activate NF-κB. RS 09 TFA can function as an adjuvant in vivo, enhancing the antigen-specific immune response.
    RS 09 TFA
  • HY-113772
    Inflachromene
    Inhibitor 99.76%
    Inflachromene, a microglial inhibitor, binds to HMGB1 and HMGB2 and exerts anti-inflammatory effects. Inflachromene effectively downregulates proinflammatory functions of HMGB and reduces neuronal damage. Inflachromene can be used for the research of neuroinflammatory disorders.
    Inflachromene
  • HY-N0272
    Eleutheroside E
    Inhibitor 99.58%
    Eleutheroside E is an important component of ginseng that can be taken orally. Eleutheroside E has anti-inflammatory and antioxidant properties, and it helps reduce apoptosis in heart cells caused by hypoxia-reoxygenation (H/R) damage. Eleutheroside E can improve type 2 diabetes, enhance cognitive function, and has neuroprotective effects.
    Eleutheroside E
  • HY-115385
    Lumichrome
    Inhibitor 99.72%
    Lumichrome, a photodegradation product of Riboflavin, is an endogenous compound in humans. Lumichrome inhibits human lung cancer cell growth and induces apoptosis via a p53-dependent mechanism. Lumichrom is the inhibitor for AKT/β-catenin signaling pathway.
    Lumichrome
  • HY-134240
    L-Threonic acid magnesium
    Inhibitor ≥99.0%
    L-Threonic acid magnesium (Magnesium L-threonate) is the enantiomer of Threonic acid and the metabolite of vitamin C (HY-B0166). L-Threonic acid magnesium is a magnesium supplementation, that improves the brain magnesium concentration, inhibits the activation of TNF-α/NF-κB signaling pathway. L-Threonic acid magnesium can be used in research of Alzheimer’s disease. L-Threonic acid magnesium is orally active.
    L-Threonic acid magnesium
  • HY-124284
    Hexamethylene bisacetamide
    Inhibitor 99.56%
    Hexamethylene bisacetamide (HMBA) is a differentiation inducer and selective bromine domain inhibitor that can differentiate across the blood-brain barrier. Hexamethylene bisacetamide can induce tumor cell differentiation and inhibit cell proliferation, showing antitumor activity. Hexamethylene bisacetamide induces apoptosis by Notch1, Bcl-2 and p53 signaling pathways. In addition, Hexamethylene bisacetamide improves the obesity phenotype of mice.
    Hexamethylene bisacetamide
  • 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-14621
    Zingerone
    Inhibitor 99.77%
    Zingerone (Vanillylacetone) is a nontoxic methoxyphenol isolated from Zingiber officinale, with potent anti-inflammatory, antidiabetic, antilipolytic, antidiarrhoeic, antispasmodic and anti-tumor properties. Zingerone alleviates oxidative stress and inflammation, down-regulates NF-κB mediated signaling pathways. Zingerone acts as an anti-mitotic agent, and inhibits the growth of neuroblastoma cells.
    Zingerone
  • HY-N0034
    Arctiin
    Inhibitor 99.52%
    Arctiin is an orally active inhibitor of NF-κB. Arctiin suppresses cyclin D1 protein expression in human tumor cells. Arctiin also reduces malondialdehyde and pro-in ammatory cytokines levels. Arctiin can used in study glomerulonephritis.
    Arctiin
  • HY-N0763
    Angelicin
    Inhibitor 99.98%
    Angelicin is a furanocoumarin compound that functions as an inhibitor of NF-κB and MAPK signaling pathways, exhibiting anti-inflammatory, antiviral, and antitumor activities. It suppresses the lytic replication of γ-herpesviruses, such as MHV-68, early during viral infection, potentially inhibiting RTA gene expression (IC50=28.95 μM). Angelicin also mitigates inflammation by inhibiting the phosphorylation and nuclear translocation of NF-κB, and the phosphorylation of p38 and JNK. Furthermore, it induces apoptosis in neuroblastoma cells by downregulating anti-apoptotic proteins like Bcl-2, Bcl-xL, and Mcl-1, while activating caspase-9 and caspase-3.
    Angelicin
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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