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NF-κB

Nuclear factor-κB; Nuclear factor-kappaB

NF-κB

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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.

NF-κB Isoform Specific Products:

NF-κB Isoform Comparison
製品番号 製品名 製品効果 純度 構造式
  • HY-Y1362
    Ethyl pyruvate

    ピルビン酸エチル

    		Inhibitor 99.87%
    Ethyl pyruvate is a simple derivative of the endogenous metabolite pyruvate. Ethyl pyruvate is an HMGB1 release inhibitor. Ethyl pyruvate can induce apoptosis by autophagy. Ethyl pyruvate has anti-inflammatory, antioxidant and anti-tumor activity. Ethyl pyruvate can be used in the study of neurodegenerative diseases such as Alzheimer's and Parkinson's disease.
    Ethyl pyruvate
  • HY-100367
    ES 936 Inhibitor 98.66%
    ES 936 is a potent and specific NQO1 inhibitor. ES 936 inhibits the growth of MIA PaCa-2 and BxPC-3 cells, with IC50 values of 108 nM and 365 nM, respectively. ES936 significantly inhitbits the growth rate of MIA PaCa-2 xenograft tumors in mice. ES 936 can be used for the study of pancreatic cancer.
    ES 936
  • HY-N0375
    18α-Glycyrrhetinic acid

    18α-Glycyrrhetinic acid

    		Inhibitor 99.87%
    18α-Glycyrrhetinic acid, a diet-derived compound, is an inhibitor of NF-kB and an activator of proteasome, which serves as pro-longevity and anti-aggregation factor in a multicellular organism. 18α-Glycyrrhetinic acid induces apoptosis.
    18α-Glycyrrhetinic acid
  • HY-N0622
    Morusin

    Morusin

    		Inhibitor 99.54%
    Morusin is a prenylated flavonoid isolated from Morus alba Linn. with various biological activities, such as antitumor, antioxidant, and anti-bacteria property. Morusin could inhibit NF-κB and STAT3 activity.
    Morusin
  • HY-N6949
    Juglone

    ジュグロン

    		Inhibitor 99.77%
    Juglone (5-hydroxy-1,4-naphthalenedione) is a yellow dye that can be extracted from Juglans regia. Juglone induces apoptosis through the mitochondrial pathway. Juglone has antibacterial and antitumor activity .
    Juglone
  • HY-P3211A
    Nangibotide TFA Inhibitor 99.86%
    Nangibotide TFA (LR12 TFA) is a synthetic peptide and TREM-1 receptor inhibitor. Nangibotide TFA inhibits NF-κB and NLRP3 inflammasome activation and reduces the release of pro-inflammatory factors (such as IL-1β, IL-8). Nangibotide TFA inhibits Apoptosis. Nangibotide TFA reduces excessive inflammatory responses and protects tissues (liver, lung) from damage. Nangibotide TFA can be used in the researches for myocardial ischemia-reperfusion injury, septic shock, acute lung injury, osteoarthritis, and acute liver failure.
    Nangibotide TFA
  • HY-B1899
    Taurodeoxycholic acid Inhibitor 98.0%
    Taurodeoxycholate sodium salt is a bile salt-related anionic detergent. Taurodeoxycholic acid is formed in the liver by conjugation of deoxycholate with Taurine (HY-B0351). Taurodeoxycholic acid is used for isolation of membrane proteins including inner mitochondrial membrane proteins. Taurodeoxycholic acid (TDCA) exhibits anti-inflammatory and neuroprotective effects.
    Taurodeoxycholic acid
  • HY-N0708
    Vanillic acid

    バニリン酸

    		Inhibitor 99.75%
    Vanillic acid is a flavoring agent found in edible plants and fruits, also found in Angelica sinensis. Vanillic acid inhibits NF-κB activation. Anti-inflammatory, antibacterial, and chemopreventive effects.
    Vanillic acid
  • HY-N0390S8
    L-Glutamine-15N2

    L-Glutamine-15N2

    		Inhibitor 99.95%
    L-Glutamine-15N2 is the 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>15</sup>N<sub>2</sub>
  • HY-107859
    Tris(2-chloroethyl) phosphate Activator
    Tris(2-chloroethyl) phosphate (TCEP) is a widely used organic phosphorus flame retardant, mainly used as a plasticizer. Tris(2-chloroethyl) phosphate has orally active hepatotoxicity, inducing an increase in reactive oxygen species (ROS) and calcium ions (Ca²⁺) influx, a decrease in mitochondrial membrane potential (△Ψm), and causing DNA damage and cell apoptosis. Tris(2-chloroethyl) phosphate directly binds to FXR, inducing obesity and the formation of fatty liver in mice. Chloroethyl) phosphate activates the TLR4/NF-κB pathway, triggering liver inflammation.
    Tris(2-chloroethyl) phosphate
  • HY-N2515
    Ginsenoside Rk1

    Ginsenoside Rk1

    		Inhibitor 99.90%
    Ginsenoside Rk1 is a unique component created by processing the ginseng plant (mainly Sung Ginseng, SG) at high temperatures. Ginsenoside Rk1 has anti-inflammatory effect, suppresses the activation of Jak2/Stat3 signaling pathway and NF-κB. Ginsenoside Rk1 has anti-tumor effect, antiplatelet aggregation activities, anti-insulin resistance, nephroprotective effect, antimicrobial effect, cognitive function enhancement, lipid accumulation reduction and prevents osteoporosis. Ginsenoside Rk1 induces cell apoptosis by triggering intracellular reactive oxygen species (ROS) generation and blocking PI3K/Akt pathway.
    Ginsenoside Rk1
  • HY-N2397
    9''-Methyl salvianolate B Ligand 99.54%
    9''-Methyl salvianolate B (MSB) is a blood-brain barrier-permeable inhibitor with high affinity for g5Rp, with a Kd value of 117 nM against African swine fever virus (ASFV) g5Rp. 9''-Methyl salvianolate B also acts as a ZBP1 inhibitor. It exhibits strong binding affinity to key proteins in the PPARγ/NF-κB pathway. 9''-Methyl salvianolate B blocks the interaction between ASFV g5Rp and host proteins eIF5A or RPS15. It restores hypusination modification of eIF5A, promotes autophagy (Autophagy), and inhibits ASFV replication. 9''-Methyl salvianolate B effectively disrupts ZBP1-mediated PANoptosome assembly. It effectively alleviates myocardial ischemia/reperfusion injury. 9''-Methyl salvianolate B can be used in studies related to African swine fever.
    9''-Methyl salvianolate B
  • HY-N0031
    Plantamajoside

    Plantamajoside

    		Inhibitor 99.80%
    Plantamajoside is an orally active phenylpropanoid glycoside. Plantamajoside can be isolated from Plantago asiatica L.(Plantaginaceae). Plantamajoside inactivates NF-κB, PI3K/akt, induces Apoptosis, and improves Autophagy. Plantamajoside regulates MAPK, integrin-linked kinase/c-Src. Plantamajoside inhibits multiple cancers, improves lung and kidney damage. Plantamajoside has neuroprotective and anti-inflammatory effects.
    Plantamajoside
  • HY-108065A
    3'-Sialyllactose sodium Inhibitor 99.89%
    3'-Sialyllactose (3'-SL) sodium is a prebiotic, maintains immune homeostasis and exerts anti-inflammatory and anti-arthritic effects. 3'-Sialyllactose sodium is an ordinary carbohydrate with the lowest toxicity rating, it can be used for the research of inflammation.
    3'-Sialyllactose sodium
  • HY-B0167A
    Sodium Salicylate

    サリチル酸ナトリウム

    		Inhibitor 99.99%
    Sodium Salicylate (Salicylic acid sodium salt) inhibits cyclo-oxygenase-2 (COX-2) activity independently of transcription factor (NF-κB) activation. Sodium Salicylate is also a S6K inhibitor.Sodium Salicylate is a NF-κB inhibitor that decreases inflammatory gene expression and improves repair in aged muscle.
    Sodium Salicylate
  • HY-N2149
    Tomatidine Inhibitor 98.85%
    Tomatidine acts as an anti-inflammatory agent by blocking NF-κB and JNK signaling. Tomatidine activates autophagy either in mammal cells or C elegans.
    Tomatidine
  • HY-157122
    VJDT Inhibitor 99.68%
    VJDT is a TREM1 inhibitor that can effectively block TREM1 signaling. VJDT inhibits tumor cell proliferation and migration and induces cell cycle arrest. VJDT has immunomodulatory and antitumor activities, and can be used for the research of tumors such as melanoma.
    VJDT
  • HY-N8518
    Malabaricone C Inhibitor 99.46%
    Malabaricone C is an orally active and noncompetitive sphingomyelin synthase (SMS) inhibitor with IC50 values of 3 μM and 1.5 μM for SMS 1 and SMS 2, respectively. Malabaricone C reduces body weight gain, improves glucose tolerance, and decreases lipid accumulation in the liver, showing significant prevention of high fat diet-induced fatty liver in mice. Malabaricone C has anti-inflammatory effects, which is found in the fruits of Myristica cinnamomea King. Malabaricone C is promising for research of obesity and immunological disorders caused due to hyper-activation of T-cells.
    Malabaricone C
  • HY-126389
    Chitin, from crab carapace (powder),biomedical research grade

    キチン

    		Inhibitor
    Chitin, from crab carapace (powder),biomedical research grade is a long-chain polymer of N-acetylglucosamine with β-(1-4) linkages. Chitin, from crab carapace (powder),biomedical research grade is found in the exoskeleton of crabs. Chitin, from crab carapace (powder),biomedical research grade inhibits the activation of NF-κB p65, alters the translocation of NF-κB p65 to the nucleus, and interacts with the cell wall of Candida species. Chitin, from crab carapace (powder),biomedical research grade exerts antifungal and anti-inflammatory effects. Chitin, from crab carapace (powder),biomedical research grade can be used in the research of gastric ulcer and candidiasis.
    Chitin, from crab carapace (powder),biomedical research grade
  • HY-B0631
    Alendronic acid Activator ≥98.0%
    Alendronate acid is an orally active bisphosphonate which binds to bone surfaces and inhibits bone resorption by osteoclasts. Alendronate acid induces skeletal alterations in the chicken embryonic development model. Alendronate acid can be used for osteoporosis research.
    Alendronic acid
製品番号 製品名 / Synonyms Application Reactivity
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Download NF-κB Signaling Pathway Map.

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.

NF-κB Isoform Comparison

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