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-15530
    CID-2858522
    Inhibitor 99.78%
    CID-2858522 is a highly potent and selective antigen receptor-mediated NF-κB activation inhibitor with an IC50 of 70 nM.
    CID-2858522
  • HY-175222
    GlcNAc-MurNAc
    Inhibitor
    GlcNAc-MurNAc, a disaccharide, is a TLR4 agonist with a Kd of 383 μM for murine TLR4. GlcNAc-MurNAc directly binds to TLR4 and activates its downstream NF-κB and IRF pathways. GlcNAc-MurNAc improves Dextran sulfate sodium salt (DSS) (HY-116282C)-induced colitis in mice through a TLR4-dependent mechanism. GlcNAc-MurNAc can be used for the study of inflammatory bowel disease.
    GlcNAc-MurNAc
  • HY-P990208
    Anti-Mouse IL-9 Antibody (9C1)
    Inhibitor
    Anti-Mouse IL-9 Antibody (9C1) is an anti-mouse IL-9 IgG2a monoclonal antibody. Anti-Mouse IL-9 Antibody (9C1) can reduce the activation of NF-κB signaling pathway and decrease the infiltration of inflammatory cells. Anti-Mouse IL-9 Antibody (9C1) effectively reduces Th9 cell-mediated allergic reactions and anti-tumor effects. Anti-Mouse IL-9 Antibody (9C1) can be used for researches on inflammation, infection conditions and cancer such as parasitic infections, allergic reactions, breast cancer and osteosarcoma.
    Anti-Mouse IL-9 Antibody (9C1)
  • HY-P99635
    Gatralimab
    Inhibitor
    Gatralimab (GZ-402668) is an IgG1 anti-CD52 monoclonal antibody.
    Gatralimab
  • HY-W097625
    6-Methoxyflavone
    Inhibitor 99.73%
    6-Methoxyflavone is an orally active methoxyflavone. 6-Methoxyflavone suppresses neuroinflammation in microglia through the inhibition of TLR4/MyD88/p38 MAPK/NF-κB dependent pathways and the activation of HO-1/NQO-1 signaling. 6-Methoxyflavone induces S-phase arrest through the CCNA2/CDK2/p21CIP1 signaling pathway in HeLa cells. 6-Methoxyflavone inhibits NFAT Translocation into the nucleus and suppresses T cell activation. 6-Methoxyflavone partially restores chronic ethanol-induced behavioral deficits in mice. 6-Methoxyflavone antagonizes chronic constriction injury and diabetes associated neuropathic nociception expression. 6-Methoxyflavone can be used for the study of cancer, inflammation and neurological diseases.
    6-Methoxyflavone
  • HY-N7043
    Isosilybin A
    Inhibitor 99.63%
    Isosilybin A is a PPARγ agonist that can be isolated from silymarin. Isosilybin A activates extrinsic and intrinsic pathways of apoptosis through targeting of the Akt-NF-kB-AR axis. Isosilybin A can relieve the inflammatory response in the rosacea model via inhibiting Erk and p38 signaling pathways and M1 macrophage polarization, with its targets related to RELA and VEGFA. Isosilybin A has anti-prostate cancer (PCA) activity[1][2][3].
    Isosilybin A
  • HY-107566
    Conessine
    Inhibitor 99.87%
    Conessine is an orally active and BBB-penetrable selective histamine H3 receptor antagonist. The pKi values of Conessine for rat and human H3 receptors are 7.61 and 8.27, respectively. Conessine is an inhibitor of the multidrug efflux pump system in Pseudomonas aeruginosa and can enhance the activity of antibiotics. Conessine has antimalarial activity. Conessine can also be used in the research of muscle atrophy.
    Conessine
  • HY-115590
    JP-11646
    Inhibitor 98.74%
    JP-11646 is a pan-PIM inhibitor with increased potency against PIM2 (IC50 = 0.5 nM). JP11646 is freely reversible and ATP non-competitive. JP-11646 results in a decrease of PIM1, 2, and 3 mRNA. JP-11646 can effectively inhibit cell viability in small cell lung cancer (SCLC) and large cell neuroendocrine carcinomas of the lung (LCNEC). JP-11646 can cause a decrease in p-4EBP-1 protein, increasing the cleavage of caspases while decreasing caspase-3. JP-11646 induces apoptosis or necroptosis in cells. JP-11646 leads to reductions in MYC paralogs. JP-11646 can be used for the study of SCLC, LCNEC, human acute leukemia (AML), multiple myeloma (MM), and triple-negative breast cancer (TNBC).
    JP-11646
  • HY-N2282
    Zingiberen newsaponin
    Inhibitor 99.68%
    Zingiberen Newsaponin (Zingiberensis newsaponin) is an orally active type of steroid saponin compound. Zingiberen Newsaponin exerts anti-hepatocellular carcinoma (HCC) effects by inhibiting autophagy and the AKR1C1/JAK2/STAT3 pathway. Zingiberen Newsaponin activates oxidative stress (upregulates ROS and MDA) and mitochondrial pathways, promoting cancer cell apoptosis. Zingiberen Newsaponin alleviates cerebral ischemia-reperfusion (I/R) injury by decreasing the concentration of pro-inflammatory cytokines and inhibits NF-κB. Zingiberen Newsaponin can enhance the activity of SOD, eliminate free radicals and protect nerve cells. Zingiberen Newsaponin induces platelet aggregation.
    Zingiberen newsaponin
  • HY-111024
    2,2,5,7,8-Pentamethyl-6-Chromanol
    Inhibitor 99.30%
    2,2,5,7,8-Pentamethyl-6-Chromanol (PMC) is the anti-oxidant moiety of vitamin E (α-tocopherol). 2,2,5,7,8-Pentamethyl-6-Chromanol has potent androgen receptor (AR) signaling modulation and anti-cancer activity against prostate cancer cell lines.
    2,2,5,7,8-Pentamethyl-6-Chromanol
  • HY-155765
    Anti-inflammatory agent 51
    Inhibitor 98.08%
    Anti-inflammatory agent 51 (compound 11d) is an amide/sulfonamide derivative with anti-inflammatory activities. Anti-inflammatory agent 51 inhibits NF-κB activation, has the potential for acute lung injury and ulcerative colitis research.
    Anti-inflammatory agent 51
  • HY-Y0586
    2,4,5-Trimethoxybenzoic acid
    Inhibitor 99.98%
    2,4,5-Trimethoxybenzoic acid (Asaronic acid) is a compound identified in purple perilla extracts. 2,4,5-Trimethoxybenzoic acid inhibits LPS (HY-D1056)-induced inflammatory responses, inhibits the activation of NF-κB and STAT signaling pathways. 2,4,5-Trimethoxybenzoic acid inhibits M1 macrophage phenotype-mediated inflammation in diabetes.
    2,4,5-Trimethoxybenzoic acid
  • HY-N2157
    Pteryxin
    Inhibitor 99.55%
    Pteryxin ((+)-Pteryxin) is an orally active multi-target inhibitor that targets NF-κB, MAPK, NLRP3 inflammasome, and Nrf2/ARE pathways. Pteryxin is also a BChE inhibitor (IC50=12.96 μg/mL) with a low inhibitory efficiency on AChE. Pteryxin inhibits the Ca2+-calcineurin-NFATc1 pathway by blocking NF-κB/MAPK signaling, inhibiting NLRP3 inflammasome activation, and reducing ROS generation, and activates Nrf2-mediated antioxidant enzyme expression. Pteryxin has anti-inflammatory, antioxidant, and osteoclastogenesis inhibitory activities. Pteryxin can be used in the study of inflammatory diseases, osteoporosis, diabetes, and Alzheimer's disease.
    Pteryxin
  • HY-125847
    Salvianolic acid F
    Inhibitor 99.50%
    Salvianolic acid F is a KRAS inhibitor, especially for KRAS G12D. Salvianolic acid F inhibits NF-kB, MMP-9, and NO simultaneously. Salvianolic acid F inhibits cancer cell growth, invasion, and migration and induces apoptosis via the EP300/PI3K/AKT pathway in vitro. Salvianolic acid F inhibits the growth of KRAS-dependent lung cancer cells via the PI3K/AKT signaling pathway in vivo. Salvianolic acid F can be used in the research of various cancers, including KRAS G12D-driven non-small cell lung cancer (NSCLC) and ovarian cancer.
    Salvianolic acid F
  • 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-N0887
    Isoastragaloside I
    Inhibitor 99.49%
    Isoastragaloside I is a natural compound found in Astragalus membranaceus, with oral activity and multiple biological activities such as anti-inflammatory and antioxidant properties. Isoastragaloside I inhibits Akt, NF-κB, MAPKs and PI3K, enhances the activity of hepatic FXR, regulates the TGF-β/Smads signaling pathway, and upregulates antioxidant molecules downstream of Nrf2. Isoastragaloside I inhibits the expression of NO, TNF-α, iNOS, COX-2, IL-1β and VCAM-1, and reduces intracellular ROS levels. Isoastragaloside I attenuates blood-brain barrier disruption, restores intestinal barrier function, increases β-cell mass, improves glucose homeostasis, and elevates circulating adiponectin levels. Isoastragaloside I can be used for the study of neuroinflammation-related neurodegenerative diseases, cholestatic liver disease, and diabetes.
    Isoastragaloside I
  • HY-N0197R
    Baicalin (Standard)
    Inhibitor
    Baicalin (Standard) is the analytical standard of Baicalin. This product is intended for research and analytical applications. Baicalin, as a flavonoid glycoside, is an allosteric carnitine palmityl transferase 1 (CPT1) activator. Baicalin reduces the expression of NF-κB.
    Baicalin (Standard)
  • HY-N3536
    Canthin-6-one
    Inhibitor 99.92%
    Canthin-6-one is an indole alkaloid, displays antibacterial and anti-inflammatory activities.
    Canthin-6-one
  • HY-16363
    Omtriptolide
    Inhibitor
    Omtriptolide (PG490-88) is a derivative proagent of triptolide purified from the Chinese herb.
    Omtriptolide
  • HY-N16500
    Hericenone C
    Inhibitor 98.07%
    Hericenone C is a metabolite derived from Hericium erinaceus. Hericenone C inhibits LPS (HY-D1056)-induced NRE::Luc luciferase activity, reduces phosphorylation of p65 and inhibits NF-κB signaling. Hericenone C exhibits neuroprotective effect.
    Hericenone C
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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