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-B0130
    Perindopril
    98.11%
    Perindopril erbumine is an angiotensin-converting enzyme inhibitor. Perindopril erbumine modulates NFκB and STAT3 signaling and inhibits glial activation and neuroinflammation. Perindopril erbumine can be used for the research of Chronic Kidney Disease and high blood pressure.
    Perindopril
  • HY-W082785A
    L6H21
    Inhibitor 99.46%
    L6H21, a Chalcone (HY-121054) derivative, is an orally active, potent and specific myeloid differentiation 2 (MD-2) inhibitor. L6H21 directly binds to MD-2 protein with a high affinity and low KD value of 33.3 μM, blocking the formation of the LPS-TLR4/MD-2 complex. L6H21 inhibits LPS-induced expression of TNF-α and IL-6 in RAW264.7 macrophages, with IC50 values of 6.58 and 8.59 μM, respectively. L6H21 can be used for alcoholic liver disease, metabolic disturbance and neuroinflammation research.
    L6H21
  • 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
  • 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-P1832A
    PTD-p65-P1 Peptide TFA
    Inhibitor 99.14%
    PTD-p65-P1 Peptide TFA is a potent, selective nuclear transcription factor NF-κB inhibitor and derives from the p65 subunit of NF-κB amino acid residues 271-282, which selectively inhibits NF-κB activation induced by various inflammatory stimulation, down-regulate NF-κB-mediated gene expression and up-regulate apoptosis.
    PTD-p65-P1 Peptide TFA
  • HY-90003A
    Tianeptine sodium salt
    Inhibitor 99.90%
    Tianeptine sodium salt is a selective facilitator of 5-HT uptake. Tianeptine sodium salt suppresses MMP-9 via suppression of the PI3K/Akt-mediated NF-κB pathway. Tianeptine sodium salt has no affinity for a wide range of receptors, including 5-HT and dopamine (IC50>10 μM) and has no effect on noradrenalin or dopamine uptake. Tianeptine sodium salt has antidepressant, anxiolytic, analgesic and neuroprotective activities.
    Tianeptine sodium salt
  • 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-W016412
    Coenzyme Q0
    Inhibitor 99.88%
    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-16561A
    cis-Resveratrol
    Inhibitor 98.79%
    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-N5048
    Galloylpaeoniflorin
    Inhibitor 98.04%
    Galloylpaeoniflorin is a NF-κB inhibitor. And Galloylpaeoniflorin is a inhibitor of DNA cleavage.
    Galloylpaeoniflorin
  • HY-N0632
    Esculentoside A
    Inhibitor 99.89%
    Esculentoside A (EsA), a kind of triterpene saponin isolated from roots of Phytolacca esculenta. Esculentoside A (EsA) possesses anti-inflammatory activity in acute and chronic experimental models, has selective inhibitory activity towards cyclooxygenase-2 (COX-2). Esculentoside A (EsA) suppresses inflammatory responses in LPS-induced acute lung injury (ALI) through inhibition of the nuclear factor kappa B (NF-ΚB) and mitogen activated protein kinase (MAPK) signaling pathways.
    Esculentoside A
  • HY-123984
    LTβR-IN-1
    Activator 99.79%
    LTβR-IN-1 is a potent, selective lymphotoxin β receptor (LTβR) inhibitor. LTβR-IN-1 also selectively inhibits the nuclear translocation of p52 depended on TNF12A, instead of the nuclear translocation of p65 mediated by TNF-α receptor. LTβR-IN-1 regulates the NF-kB signaling pathway IN a ligand-independent manner.
    LTβR-IN-1
  • HY-18976
    UF010
    99.84%
    UF010 is a selective inhibitor of class I HDAC. UF010 has cytotoxicity to cancer cells and reduces neuroinflammation in the hippocampus. UF010 can be used for the research of neurological diseases.
    UF010
  • HY-N0696
    Sipeimine
    Inhibitor ≥98.0%
    Sipeimine (Imperialine) is an inhibitor targeting the PI3K/AKT/NF-κB pathway and NLRP3 inflammasome, which can competitively bind to PI3K and p65. Sipeimine inhibits PI3K/AKT phosphorylation, blocks NF-κB nuclear translocation and NLRP3 inflammasome activation. Sipeimine exerts anti-inflammatory activities, inhibits pyroptosis and ferroptosis, and protects the extracellular matrix. Sipeimine can reduce cartilage degradation and synovial inflammation in osteoarthritis and improve PM2.5-induced lung injury. Sipeimine is mainly used in the study of anti-inflammatory and degenerative diseases.
    Sipeimine
  • 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-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-N0563
    Alizarin
    Inhibitor 99.17%
    Alizarin is a natural dye. Alizarin can be extracted from the roots of madder plant. Alizarin activates AMPK and VEGFR2/eNOS pathway. Alizarin regulates PI3K/Akt and inhibits NF-κB pathway. Alizarin enhances CYP1A1 enzyme activity. Alizarin has protective effects on hypertension and vascular endothelial dysfunction. Alizarin has anti-tumor activity against multiple cancers including pancreatic cancer, breast cancer, osteosarcoma and liver cancer. Alizarin has been widely used as a pigment in textile fabrics and paintings.
    Alizarin
  • HY-N6051
    (-​)​-Maackiain
    Inhibitor 99.91%
    (-)-Maackiain is a pterocarpan phytoalexin produced from Sophora flavescens. (-)-Maackiain is toxic to several genera of fungal pathogens of legume and non legume hosts. (-)-Maackiain enhances the activation of NLRP3 inflammasome, inhibits the activation of NF-κB pathway, exhibiting thereby immunostimulatory and anti-inflammatory activities. (-)-Maackiain is orally active.
    (-​)​-Maackiain
  • HY-116626
    SM-7368
    Inhibitor 99.77%
    SM-7368 is a potent NF-kB inhibitor that targets downstream of MAPK p38 activation. SM-7368 inhibits TNF-α-induced MMP-9 upregulation. SM-7368 can be used for the research of chemotherapies targeting TNF-α-mediated tumor invasion and metastasis .
    SM-7368
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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