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-N0168A
    (Rac)-Hesperetin
    99.28%
    (Rac)-Hesperetin is the racemate of Hesperetin. Hesperetin is a natural flavanone that can be found in citrus, and acts as a potent and orally active broad-spectrum inhibitor against human UGT activity. Hesperetin induces apoptosis via p38 MAPK activation. Hesperetin displays a range of bioactivities including antioxidant, anti-inflammatory, and anti-cancer. Hesperetin is found to induce cell-cycle arrest at G2/M phase. Hesperetin can reduce Bcl-2 and enhance BaxM. Hesperetin induces apoptosis through inhibiting NF-κB receptor.
    (Rac)-Hesperetin
  • HY-A0068
    Aurothioglucose
    Inhibitor
    Aurothioglucose (Gold thioglucose), containing monovalent gold ion, is a potent active-site inhibitor of TrxR1 (thioredoxin reductase 1), with an IC50 of 65 nM. Aurothioglucose inhibits the DNA binding of NF-κB in vitro. Aurothioglucose shows anti-HIV and anti-rheumatic activities.
    Aurothioglucose
  • HY-W013507
    (rac)-Methyl jasmonate
    Inhibitor 99.37%
    (rac)-Methyl jasmonate is the racemate of Methyl jasmonate (HY-135663). Methyl jasmonate is a phytohormone that regulates the defense response of plants under biotic and biotic stress through jasmonate signaling pathway. Methyl jasmonate inhibits the activation of NF-κB signaling pathway. Methyl jasmonate can promote the mitochondrial ROS production, but also scavenges free radicals and reduces the oxidative stress. Methyl jasmonate exhibits anti-inflammatory, antitumor, anticonvulsant, antinociceptive and sedative activities.
    (rac)-Methyl jasmonate
  • HY-N3063
    Pimaric acid
    Inhibitor 98.76%
    Pimaric acid is a resin acid that has been found in A. cordata and various pines. Pimaric acid exerts anticancer effects via endoplasmic reticulum stress, caspase-dependent apoptosis, cell cycle arrest, and inhibition of cell migration in human ovarian cancer cells. Pimaric acid reduces mRNA expression, protein levels, and promoter activity of matrix metalloproteinase-9 (MMP-9) in TNF-α-stimulated human aortic smooth muscle cells (HASMCs).
    Pimaric acid
  • HY-P1684
    Peptide P60
    Inhibitor 98.39%
    Peptide P60 is a FOXP3 inhibitor. Peptide P60 can enter cells, inhibit the nuclear translocation of FOXP3, and diminish its ability to suppress the transcription factors NF-κB and NFAT. Peptide P60 can inhibit the immunosuppressive activity of regulatory T cells (Treg) derived from mice and humans, and enhance the stimulation of effector T cells in vitro. Peptide P60 can induce a lymphoproliferative autoimmune syndrome with pathological manifestations resembling those reported in scurfy mice lacking functional Foxp3. Peptide P60 can enhance the immunogenicity of cancer and viral vaccines.
    Peptide P60
  • HY-126066
    (-)-Syringaresinol
    Inhibitor 99.95%
    (-)-Syringaresinol is an orally active isomer of syringaresinol (HY-N8307) found in Annona Montana. (-)-Syringaresinol exhibits antioxidant, anti-inflammatory, and anticancer activities. (-)-Syringaresinol can alleviate ulcerative colitis via the PI3K-Akt/MAPK/Wnt signaling pathway. (-)-Syringaresinol inhibits HL-60 cell proliferation by arresting the G1 phase and inducing apoptosis. (-)-Syringaresinol inhibits LPS (HY-D1056)-induced microglial activation by downregulating the NF-κB p65 signaling pathway and its interaction with ERβ, exerting anti-neuroinflammatory effects.
    (-)-Syringaresinol
  • HY-B0898
    Ceftiofur sodium
    Inhibitor 98.03%
    Ceftiofur sodium is a cell wall synthesis inhibitor that targets bacterial penicillin-binding proteins (PBPs) and has anti-inflammatory effects in endotoxemia. Ceftiofur sodium exerts bactericidal effects by inhibiting the synthesis of bacterial cell wall peptidoglycan, leading to bacterial cell lysis. Ceftiofur sodium also inhibits the activation of NF-κB and MAPKs, thereby reducing the secretion of pro-inflammatory cytokines such as TNF-α, IL-1β, and IL-6.
    Ceftiofur sodium
  • HY-118828
    12-Oxo phytodienoic acid
    99.57%
    12-Oxo phytodienoic acid (12-OPDA) is a plant lipid-derived anti-inflammatory compound. 12-Oxo phytodienoic acid suppresses neuroinflammation by inhibiting Nf-κB and p38 MAPK signaling in Lipopolysaccharides (LPS) (HY-D1056)-activated cells. 12-Oxo phytodienoic acid can be used for neurodegenerative diseases research.
    12-Oxo phytodienoic acid
  • HY-19416
    AEOL-10150 pentachloride
    Modulator ≥98.0%
    AEOL-10150 pentachloride is a metalloporphyrin-catalyzed antioxidant and a superoxide dismutase mimetic. AEOL-10150 pentachloride scavenges ROS and RNS, and modulates the NF-κB signaling pathway. AEOL-10150 pentachloride has potent antioxidant and anti-inflammatory activities. AEOL-10150 pentachloride effectively mitigates tissue damage caused by radiation and chemical agents such as CEES (HY-W199190). AEOL-10150 pentachloride synergizes with radiotherapy to exert anticancer effects on prostate tumors.
    AEOL-10150 pentachloride
  • HY-136477
    Pentagamavunon-1
    Inhibitor 99.84%
    Pentagamavunon-1 (PGV-1), a Curcumin analog with oral activity, targets on several molecular mechanisms to induce apoptosis including inhibition of angiogenic factors cyclooxygenase-2 (COX-2) and vascular endothelial growth factor (VEGF). PGV-1 inhibits NF-κB activation.
    Pentagamavunon-1
  • HY-157331
    DCZ5418
    Inhibitor 99.02%
    DCZ5418 is an inhibitor of TRIP13. DCZ5418 has anti-multiple myeloma activity in vitro and in vivo.
    DCZ5418
  • HY-B0380
    Trimebutine
    Inhibitor 99.42%
    Trimebutine is a multi-target inhibitor and opioid receptor agonist with antimuscarinic activity. Trimebutine inhibits L-type Ca2+ channels and large-conductance calcium-activated potassium channels (BKCa channels), thereby inhibiting extracellular calcium influx and potassium ion efflux. Trimebutine also targets Toll-like receptors, inhibits Toll-like receptor 2/4/7/8/9 signals, and inhibits LPS-induced IRAK1 activation, as well as ERK1/2, JNK and NF-κB activation, thereby exerting anti-inflammatory effects. Trimebutine also induces tumor cell apoptosis by inhibiting the AKT/ERK pathway. Trimebutine also inhibits excessive contraction of smooth muscle and can be used in the study of gastrointestinal disorders such as irritable bowel syndrome (IBS).
    Trimebutine
  • HY-B0185AS
    Lidocaine-d10 hydrochloride
    Inhibitor 99.55%
    Lidocaine-d10 (hydrochloride) is the deuterium labeled Lidocaine hydrochloride. Lidocaine hydrochloride (Lignocaine hydrochloride) inhibits sodium channels involving complex voltage and using dependence. Lidocaine hydrochloride decreases growth, migration and invasion of gastric carcinoma cells via up-regulating miR-145 expression and further inactivation of MEK/ERK and NF-κB signaling pathways. Lidocaine hydrochloride, an amide derivative, has the potential for the research of the ventricular arrhythmia.
    Lidocaine-d<sub>10</sub> hydrochloride
  • HY-B0185S1
    Lidocaine-d10
    Inhibitor 99.58%
    Lidocaine-d10 is the deuterium labeled Lidocaine. Lidocaine (Lignocaine) inhibits sodium channels involving complex voltage and using dependence. Lidocaine decreases growth, migration and invasion of gastric carcinoma cells via up-regulating miR-145 expression and further inactivation of MEK/ERK and NF-κB signaling pathways. Lidocaine is an amide derivative and has potential for the research of ventricular arrhythmia.
    Lidocaine-d<sub>10</sub>
  • HY-14655S
    Sulfasalazine-d4
    Inhibitor 99.28%
    Sulfasalazine-d4 is the deuterium labeled Sulfasalazine. Sulfasalazine (NSC 667219) is an anti-rheumatic agent for the research of rheumatoid arthritis and ulcerative colitis. Sulfasalazine can suppress NF-κB activity. Sulfasalazine is a type 1 ferroptosis inducer.
    Sulfasalazine-d<sub>4</sub>
  • HY-122830
    DD-03-171
    Inhibitor 98.72%
    DD-03-171 is a PROTAC BTK degrader. DD-03-171 inhibits mantle cell lymphoma (MCL) cell proliferation (IC50 = 5.1 nM) and prolongs the survival of mice bearing a lymphoma PDX model by degrading BTK, IKFZ1, and IKFZ3. DD-03-171 also inhibits platelet function and thrombosis. (Pink: BTK ligand 9 (HY-168292); Black: linker (HY-28875); Blue: Thalidomide-NH-CH2-COOH (HY-131717)).
    DD-03-171
  • HY-100977
    Dimethoxycurcumin
    Inhibitor 98.40%
    Dimethoxycurcumin is a derivative of curcumin that has anti-inflammatory and antioxidant activities.
    Dimethoxycurcumin
  • HY-Y1322
    Triphenyl phosphate
    Activator 99.67%
    Triphenyl phosphate is an organic phosphate flame retardant. Triphenyl phosphate can disrupt placental tryptophan metabolism by activating MAOA/ROS/NFκB, leading to abnormal neurological behavior. Triphenyl phosphate promotes oxidative stress by inducing inflammatory factors like nuclear factor kappa B (NFκB), interleukin-6, and tumor necrosis factor α. Triphenyl phosphate can also cause allergic contact dermatitis.
    Triphenyl phosphate
  • HY-W014223
    2,4′-Dihydroxybenzophenone
    Inhibitor 98.00%
    2,4′-Dihydroxybenzophenone (Ultraviolet absorber UV-0) occupies the hydrophobic pocket of MD2 and blocks the dimerization of TLR4. 2,4′-Dihydroxybenzophenone inhibits the LPS induced mtROS production, and LPS induced inflammatory response by downregulating pro-inflammatory mediators and decreasing the expression of MyD88, p-IRAK4, and NF-κB. 2,4′-Dihydroxybenzophenone is also a UV absorber.
    2,4′-Dihydroxybenzophenone
  • HY-N2855
    Alphitolic acid
    Inhibitor
    Alphitolic acid (Aophitolic acid) is an anti-inflammatory triterpene could found in quercus aliena. Alphitolic acid blocks Akt–NF-κB signaling to induce apoptosis. Alphitolic acid induces autophagy. Alphitolic acid has anti-inflammatory activity and down-regulates the NO and TNF-α production. Alphitolic acid can be used for cancer and inflammation research.
    Alphitolic acid
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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