2. Signaling Pathways
  3. NF-κB
  4. NF-κB

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
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-N11004
    Erinacine C
    		Inhibitor 98.61%
    Erinacine C is the inhibitor for NF-κB signaling pathway and the activator for Nrf2 signaling pathway. Erinacine C exhibits antioxidant, neuroprotective and anti-inflammatory effects.
    Erinacine C
  • HY-W005130
    2,4,6-Trihydroxybenzaldehyde
    		Inhibitor 99.93%
    2,4,6-Trihydroxybenzaldehyde is an orally active NF- B inhibitor. 2,4,6-Trihydroxybenzaldehyde shows anti-tumor activity, anti-cancer cell proliferative activity and anti-obesity activity.
    2,4,6-Trihydroxybenzaldehyde
  • HY-B0327
    Irsogladine
    		Inhibitor 99.88%
    Irsogladine (Dicloguamine) is an orally active gastric mucosal protective agent. Irsogladine inhibits breast cancer recurrence and lung metastasis in nude mice. Irsogladine inhibits the transcriptional activities of NF-κB and AP-1, suppresses the activities of PDE and PDE4 to elevate intracellular cAMP levels, and activates TRPV1 and KATP channels. Irsogladine enhances iNOS expression, NO production, and the activation of cAMP-responsive elements. Irsogladine inhibits the development and progression of intestinal polyps in Apc-mutant mice. Irsogladine alleviates oxidative stress, increases gastric mucosal blood flow, and stimulates the production of endogenous prostaglandins. Irsogladine promotes insulin secretion in MIN6 cells. Irsogladine inhibits tumor angiogenesis, cancer cell proliferation, and the production of proinflammatory cytokines. Irsogladine exerts protective effects on astrocytes in ethanol/hydrochloric acid-induced gastric ulcers in mice. Irsogladine prevents colitis in IL-10 gene-deficient mice by reducing the production of IL-12 and IL-23. Irsogladine upregulates gap junction intercellular communication in pancreatic cancer cells via the PKA pathway. Irsogladine is applicable to research related to breast cancer, intestinal polyposis, gastric ulcer, spontaneous colitis, glioma, liver cancer, and pancreatic cancer[5][6].
    Irsogladine
  • HY-113402R
    Gamma-glutamylcysteine (Standard)
    		Inhibitor
    Gamma-glutamylcysteine (Standard) is the analytical standard of Gamma-glutamylcysteine. This product is intended for research and analytical applications. Gamma-glutamylcysteine (γ-Glu-Cys) is an orally active, blood-brain barrier permeable dipeptide. Gamma-glutamylcysteine activates AMPK, SIRT1, IL-4/STAT6, AC/cAMP/PI3K, IGF-1R/IRS1/PI3K, and Nrf2 signaling pathways; it inhibits NF-κB, JAK1/STAT1/3, MAPKs, cadmium-induced p38 MAPK, JNK, and PI3K/Akt signaling pathways. Gamma-glutamylcysteine regulates macrophage polarization, modulates the trafficking of CD36 and GLUT4, induces glutathione synthesis, improves metabolic dysfunction, reduces lipid deposition, ameliorates glucose homeostasis, inhibits apoptosis (Apoptosis), stabilizes mitochondria, suppresses lipid peroxidation, iron accumulation and ferroptosis (Ferroptosis), reduces ds-HMGB1 levels, reverses mechanical hyperalgesia, and alleviates hepatic lipid droplet formation. Gamma-glutamylcysteine is applicable to research related to inflammatory bowel disease, type 2 diabetes, cadmium-induced neurotoxicity, Alzheimer's disease, cerebral ischemia/reperfusion injury, neuropathy, and alcoholic liver disease.
    Gamma-glutamylcysteine (Standard)
  • HY-168710
    TLR4/NF-κB-IN-1
    		Inhibitor 99.92%
    TLR4/NF-κB-IN-1 (Compound 7x) is an orally available inhibitor that specifically targets the TLR4/NF-κB signaling pathway, offering anti-inflammatory effects and the ability to cross the blood-brain barrier. TLR4/NF-κB-IN-1 can reduce acute neuroinflammation in mice caused by LPS (HY-D1056) and downregulate the expression of TLR4, P-NF-κB and P-IκB-α proteins.
    TLR4/NF-κB-IN-1
  • HY-N2590
    Lupenone
    		99.74%
    Lupenone is an orally active lupine-type triterpenoid that can be isolated from Musa basjoo. Lupenone Lupenone plays a role through the PI3K/Akt/mTOR and NF-κB signaling pathways. Lupenone has anti-inflammatory, antiviral, antidiabetic and anticancer activities.
    Lupenone
  • HY-121410
    Narasin
    		Inhibitor ≥98.0%
    Narasin is a cationic ionophore antibiotic and coccidiostat agent. Narasin inhibits NF-κB signaling and induces tumor cells apoptosis. Narasin has antimicrobial, antiviral anticancer activity. Narasin inhibits tumor metastasis and growth of ERα‑positive breast cancer cells by inactivation of the TGF-β/SMAD3 and IL‑6/STAT3 signaling pathways.
    Narasin
  • HY-14928A
    Lobeglitazone sulfate
    		Inhibitor 99.63%
    Lobeglitazone sulfate is a new type of thiazolidinedione. Lobeglitazone sulfate is the orally active agonist for PPAR with EC50 of 137.4 nM and 546.3 nM for PPARγ and PPARα. Lobeglitazone sulfate is the inhibitor for ERK/JNK/Smad/NF-κB signaling pathway. Lobeglitazone sulfate exhibits anti-inflammatory, anti-diabetic, anti-fibrotic and anti-atherosclerotic properties.
    Lobeglitazone sulfate
  • HY-137976
    Penehyclidine hydrochloride
    		Activator 99.2%
    Penehyclidine (Penequinine) hydrochloride, a anticholinergic agent, is a selective antagonist of M1 and M3 receptors. Penehyclidine hydrochloride activates NF-kβ in lung tissue and inhibits the release of inflammatory factors. Penehyclidine hydrochloride can alleviate the pulmonary inflammatory response in rats with chronic obstructive pulmonary disease (COPD) undergoing mechanical ventilation.
    Penehyclidine hydrochloride
  • HY-120231
    Z-VRPR-FMK
    		Inhibitor 99.91%
    Z-VRPR-FMK is an irreversible MALT1 protein inhibitor. Z-VRPR-FMK inhibits the growth and invasion of diffuse large B-cell lymphoma by inhibiting MALT1-induced NF-κB activation and MMP expression.
    Z-VRPR-FMK
  • HY-164102
    TNF-α-IN-18
    		Inhibitor 98.94%
    TNF-α-IN-18 (Compound 61) is an inhibitor for TNF-α (IC50 of 1.8 μM), that inhibits TNF signaling pathway through block of NF-kB migration from cytoplasm to nucleus. TNF-α-IN-18 exhibits slight cytotoxicity to mouse fibroblast LM cell, with a CC50 >50 μM. TNF-α-IN-18 ameliorates the TNF- or Lipopolysaccharide (HY-D1056)-induced sepsis in mouse models. TNF-α-IN-18 protects mice from rheumatoid arthritis.
    TNF-α-IN-18
  • HY-N8599
    Cichoriin
    		99.9%
    Cichoriin is an orally active coumarin glycoside with broad biological activities. Cichoriin exhibits inhibitory activities against α-amylase, α-glucosidase, pancreatic lipase and DPP-IV, with IC50 values of 5.76, 2.94, 16.83 and 9.16 μg/mL, respectively. Cichoriin significantly improves metabolic dysfunction-associated steatohepatitis (MASH) in mice by activating the AMPK signaling pathway. Cichoriin upregulates PPAR-γ in adipose tissue and alleviates obesity and associated cardiorenal injury in rats. Cichoriin blocks monosodium urate crystal-induced activation of the NLRP3 inflammasome and cell pyroptosis by inhibiting P2Y14R (IC50 = 8.47 nM). In silico virtual screening reveals that Cichoriin has a strong binding affinity for SARS-CoV-2.
    Cichoriin
  • HY-N3225
    Myricanol
    		Inhibitor 98.93%
    Myricanol is a diarylheptanoid and a Nampt activator. Myricanol exerts anti-inflammatory effects and alleviates glucocorticoid-induced muscle atrophy by increasing Sirtuin 1 (SIRT1) and PRDX5 activities while regulating inflammatory factors. Myricanol exhibits growth inhibition and induces apoptosis in human lung adenocarcinoma A549 cells. Myricanol promotes autophagy-mediated clearance of microtubule-associated protein tau to exert neuroprotective effects. Myricanol protects cardiovascular function by inhibiting PDGFRβ and NF-κB signaling pathways. Myricanol activates mitochondrial transcription factor A (TFAM) expression to exert anti-renal fibrosis effects. Myricanol improves insulin resistance through AMPK activation.
    Myricanol
  • HY-N6028
    Darutoside
    		Inhibitor 99.89%
    Darutoside is an orally effective diterpene compound with significant anti-inflammatory, analgesic, wound healing promotion, and immunomodulatory activities. Darutoside reduces edema and pain responses by inhibiting the expression of COX-2 and the migration of inflammatory cells. It regulates macrophage polarization towards the M2 type by inhibiting the NF-κB pathway, alleviating inflammation and promoting wound healing. Through multi-target regulation of metabolic networks, Darutoside significantly alleviates acute gouty arthritis.
    Darutoside
  • HY-P991400
    GSK1995057
    		Inhibitor 99.09%
    GSK1995057 is a human monoclonal antibody (mAb) targeting TNFRSF1A. GSK1995057 selectively binds to TNFR1, blocks the binding of TNF-α and LT-α, and does not interfere with TNFR2 signaling. GSK1995057 inhibits the activation of NF-κB, JNK and MAPK pathways, alleviates apoptosis (apoptosis) and inflammatory responses (inhibiting IL-1β, IL-6, IL-10, TNF-α), and prevents viability loss of human nucleus pulposus cells. GSK1995057 inhibits the expression of cytokines and neutrophil adhesion molecules in human pulmonary microvascular endothelial cell monolayers, and reduces inflammatory responses and lung injury symptoms in non-human primates. GSK1995057 forms complexes with HAVH autoantibodies, thereby activating TNFR1 and triggering the release of cytokines and IL-8 in human cells. GSK1995057 can be used in research related to intervertebral disc degeneration and acute lung injury.
    GSK1995057
  • HY-117987
    CPS-11
    		Inhibitor 99.39%
    CPS-11 (N-(Hydroxymethyl)thalidomide) a Thalidomide (HY-14658) analogue, is a potent anti-cancer agent. CPS-11 inhibits NF-κB, activates NFAT, and repress cytokine expression through elevated ROS. CPS-11 exhibits a wider activity spectrum and higher potency against MM (multiple myeloma) cell lines.
    CPS-11
  • HY-179094
    PSP-0119
    		Inhibitor 98.65%
    PSP-0119 is a highly efficient and effective PROTAC degrader targeting IRAK4 (IC50 = 2.83 nM). PSP-0119 can inhibit IRAK4 kinase activity, NF-κβ activity, and IL-1β-induced IRAK4 phosphorylation. PSP-0119 degrades IRAK4 in FLT3-mutant AML cell lines, sparing FLT3-wild-type AML cells, FLT3-wild-type samples, and normal bone marrow. PSP-0119 downregulates alpha-enolase (eNOS) of MOLM-13 cells. PSP-0119 can be used for the study of Acute Myeloid Leukemia (AML).
    PSP-0119
  • HY-N1513
    Ganoderic acid H
    		Inhibitor 99.68%
    Ganoderic acid H is a lanostane-type triterpene isolated from Ganoderma lucidum. Ganoderic acid H suppresses growth and invasive behavior of breast cancer cells through the inhibition of transcription factors AP-1 and NF-kappaB signaling.
    Ganoderic acid H
  • HY-126389B
    Chitin, from shrimp shells (chitinase substrate)
    Chitin, from shrimp shells (chitinase substrate) serves as a substrate for chitinase. Chitin, from shrimp shells (chitinase substrate) is a long-chain polymer of N-acetylglucosamine with β-(1-4) linkages. Chitin, from shrimp shells (chitinase substrate) is found in the exoskeleton of crabs. Chitin, from shrimp shells (chitinase substrate) 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 shrimp shells (chitinase substrate) exerts antifungal and anti-inflammatory effects. Chitin, from shrimp shells (chitinase substrate) can be used in the research of gastric ulcer and candidiasis.
    Chitin, from shrimp shells (chitinase substrate)
  • HY-168034
    diABZI-4
    		Activator 98.33%
    diABZI-4 is a STING activator and broad-spectrum antiviral agent with immunostimulatory activity. diABZI-4 triggers the TBK1-IRF3 and NF-κB signaling cascades by inducing STING oligomerization, thereby promoting the production of type I/III interferons and various proinflammatory cytokines. diABZI-4 exhibits broad-spectrum antiviral activity and effectively inhibits the replication of influenza A virus, SARS-CoV-2, herpes simplex virus, and other viruses. diABZI-4 also activates lymphocytes and macrophages to provide significant pre- and post-exposure protection in viral disease models. diABZI-4 can be used to study COVID-19, respiratory viral infections, and related immunopathological mechanisms.
    diABZI-4
Cat. No. Product Name / 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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