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-19356
    Rocaglamide
    Inhibitor 99.34%
    Rocaglamide (Roc-A) is isolated from the genus Aglaia and can be used for coughs, injuries, asthma and inflammatory skin diseases. Rocaglamide is a potent inhibitor of NF-κB activation in T-cells. Rocaglamide is a potent and selective heat shock factor 1 (HSF1) activation inhibitor with an IC50 of ~50 nM. Rocaglamide inhibits the function of the translation initiation factor eIF4A. Rocaglamide also has anticancer properties in leukemia.
    Rocaglamide
  • HY-10529
    Betulinic acid
    Modulator 98.43%
    Betulinic acid is a natural pentacyclic triterpenoid, acts as a eukaryotic topoisomerase I inhibitor, with an IC50 of 5 μM, and possesses anti-HIV, anti-malarial, anti-inflammatory and anti-tumor properties.
    Betulinic acid
  • HY-10496
    SC75741
    Inhibitor 99.51%
    SC75741 is a broad and efficient NF-κB inhibitor with an IC50 of 200 nM for p65. SC75741 blocks influenza viruses (IV) replication. SC75741 impairs DNA binding of the NF-κB subunit p65, resulting in reduced expression of cytokines, chemokines, and pro-apoptotic factors. SC75741 subsequently inhibits caspase activation and blocks caspase-mediated nuclear export of viral ribonucleoproteins.
    SC75741
  • HY-13812
    QNZ
    Inhibitor 99.51%
    QNZ (EVP4593) shows strong inhibitory effects on NF-κB transcriptional activation and TNF-α production with IC50s of 11 and 7 nM, respectively. QNZ (EVP4593) is a neuroprotective inhibitor of SOC channel.
    QNZ
  • HY-B2163
    Astaxanthin
    Inhibitor ≥98.0%
    Astaxanthin, the red dietary carotenoid, is an orally effective and potent antioxidant. Astaxanthin inhibits NF-κB and down-regulates VEGF in blood glucose. Astaxanthin exerts anti-cancer cell proliferation, increases apoptosis, impairs migration and invasion by activating PPARγ and reducing the expression of STAT3. Astaxanthin also has neuroprotective and anti-inflammatory activity and can be used in studies of cancer, diabetic retinopathy, cardiovascular disease, and in the coloring of animal feed.
    Astaxanthin
  • HY-N0191
    Andrographolide
    Inhibitor 99.89%
    Andrographolide is a NF-κB inhibitor, which inhibits NF-κB activation through covalent modification of a cysteine residue on p50 in endothelial cells without affecting IκBα degradation or p50/p65 nuclear translocation. Andrographolide has antiviral effects.
    Andrographolide
  • HY-P0151
    SN50
    Inhibitor 99.98%
    SN50 is a cell permeable inhibitor of NF-κB translocation.
    SN50
  • HY-B0190A
    Nafamostat mesylate
    99.85%
    Nafamostat mesylate (FUT-175), an anticoagulant, is a synthetic serine protease inhibitor. Nafamostat mesylate has anticancer and antivirus effect. Nafamostat mesylate induce apoptosis by up-regulating the expression of tumor necrosis factor receptor-1 (TNFR1). Nafamostat mesylate can be used in the development of the pathological thickening of the arterial wall3].
    Nafamostat mesylate
  • HY-N0452
    Hyperoside
    Inhibitor 99.56%
    Hyperoside is a NF-κB inhibitor, found from Hypericum monogynum. Hyperoside shows anti-tumor, antifungal, anti-inflammatory, anti-viral, and anti-oxidative activities, and can induce apoptosis.
    Hyperoside
  • HY-N0603
    20(S)-Ginsenoside Rg3
    Inhibitor 99.94%
    20(S)-Ginsenoside Rg3 is the main component of Panax ginseng C. A. Meyer. Ginsenoside Rg3 inhibits Na+ and hKv1.4 channel with IC50s of 32.2±4.5 and 32.6±2.2 μM, respectively. 20(S)-Ginsenoside Rg3 also inhibits levels, NF-κB activity, and COX-2 expression.
    20(S)-Ginsenoside Rg3
  • HY-B0185
    Lidocaine
    Inhibitor 99.96%
    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
  • HY-N0045
    Ginsenoside Rg1
    Inhibitor 99.91%
    Ginsenoside Rg1 is one of the major active components of Panax ginseng. Ginsenoside Rg1 ameliorates the impaired cognitive function, displays promising effects by reducing cerebral levels. Ginsenoside Rg1 also reduces NF-κB nuclear translocation.
    Ginsenoside Rg1
  • HY-120501
    B022
    Inhibitor 99.76%
    B022 is a potent and selective NF-κB-inducing kinase (NIK) inhibitor (Ki of 4.2 nM; IC50=15.1 nM). B022 protects liver from toxin-induced inflammation, oxidative stress, and injury. B022 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    B022
  • HY-P3229
    SN52
    Inhibitor 98.24%
    SN52 is a potent, competitive, and cell-permeable inhibitor of NF-κB2. SN52 is a variant of the SN50 peptide and inhibits the nuclear translocation of p52-RelB heterodimers. SN52 has a strong radiosensitization effect on prostate cancer cells. SN52 can be used for cancer research.
    SN52
  • HY-N2065
    Withaferin A
    Inhibitor 99.92%
    Withaferin A is a steroidal lactone isolated from Withania somnifera, inhibits NF-kB activation and targets vimentin, with potent antiinflammatory and anticancer activities. Withaferin A is an inhibitor of endothelial protein C receptor (EPCR) shedding.
    Withaferin A
  • HY-B1135
    Benzbromarone
    99.80%
    Benzbromarone is an orally active anti-gout agent. Benzbromarone has anti-infammatory, anti-oxidative stress and nephroprotective effects. Benzbromarone can be used for the research of hyperuricemia and gout.
    Benzbromarone
  • HY-14645
    (-)-DHMEQ
    Inhibitor 98.72%
    (-)-DHMEQ (Dehydroxymethylepoxyquinomicin) is a potent, selective and irreversible NF-κB inhibitor that covalently binds to a cysteine residue. (-)-DHMEQ inhibits nuclear translocation of NF-κB and shows anti-inflammatory and anticancer activity.
    (-)-DHMEQ
  • HY-N0039
    Ginsenoside Rb1
    Inhibitor 98.75%
    Ginsenoside Rb1, a main constituent of the root of Panax ginseng, inhibits Na+, K+-ATPase activity with an IC50 of 6.3±1.0 μM. Ginsenoside also inhibits IRAK-1 activation and phosphorylation of NF-κB p65 .
    Ginsenoside Rb1
  • HY-N0510
    Aristolochic acid A
    Inhibitor 99.98%
    Aristolochic acid A (Aristolochic acid I; TR 1736) is the main component of plant extract Aristolochic acids, which are found in various herbal plants of genus Aristolochia and Asarum. Aristolochic acid A significantly reduces both activator protein 1 (AP-1) and NF-κB activities. Aristolochic acid A reduces BLCAP gene expression in human cell lines.
    Aristolochic acid A
  • HY-B1640
    Ethacrynic acid
    Inhibitor 99.98%
    Ethacrynic acid has anti-inflammatory and anticancer activity. Ethacrynic acid is an orally active diuretic. Ethacrynic acid is an inhibitor of glutathione S-transferase (GSTs) and Wnt signaling pathways. Ethacrynic acid is a radiosensitizer. Ethacrynic acid can inhibit airway smooth muscle (ASM) contraction in mice. Ethacrynic acid can increase the outflow of aqueous humor from the eye for the study of glaucoma.
    Ethacrynic 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.

Your Search Returned No Results.

Sorry. There is currently no product that acts on isoform together.

Please try each isoform separately.