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JNK (c-Jun N-terminal kinase), a kinase subfamily belonging to the MAPK, is activated in response to various stress stimuli and possesses a wide variety of regulatory functions. The JNK family of serine/threonine protein kinases comprises three isoforms (JNK1, JNK2 and JNK3). JNKs are involved in the emergence and progression of diverse pathologies such as neurodegenerative, cardiovascular and metabolic disorders as well as inflammation and cancer.
Similar to the other MAP kinases, JNKs are activated by a phosphorylation cascade generally involving two types of upstream kinases, the so-called MAP kinase kinase kinases (MAP3K, MKKK) and the MAP kinase kinases (MAP2K; MKK). At the MAP2K level, JNKs are activated by MKK4 and MKK7, the former is a common activator of the JNK and the p38 MAP kinase signaling pathway. The JNK cascade shares various intersection points with other pathways making it a part of a complex signaling network.
DpC is a selective, orally active iron chelator with anticancer activity. DpC acts on signaling pathway-related targets such as JNK, NF-κB, and its activity is competitively inhibited by another iron chelator Dp44mT (HY-18973). By chelating intracellular iron and copper ions in tumor cells to form redox-active complexes, DpC induces oxidative stress, activates the JNK, NF-κB pathways and downregulates IκBα, upregulates the expressions of neuroglobin and cytoglobin, activates caspase 3/9 to induce tumor cell apoptosis. It also overcomes P-glycoprotein-mediated multidrug resistance through a lysosome-targeting mechanism, and exhibits broad-spectrum synergistic effects when combined with various chemotherapeutic agents. DpC inhibits tumor metastasis and increases TNF-α levels in the tumor microenvironment to enhance endogenous immune responses. DpC is applicable to the research of various malignancies including neuroblastoma, pancreatic cancer, prostate cancer, lung cancer, and breast cancer.
Schizophyllan (SPG) is an orally active extracellular β-glucan produced by the fungus Schizophyllum commune. Schizophyllan improves mitochondrial function and protects against metabolic liver injury by activating the SIRT3 pathway. Schizophyllan inhibits osteoclastogenesis and promotes osteoblast differentiation by suppressing the phosphorylation of JNK/p38, as well as downregulating PGC1β/PPARγ, c-Fos and NFATc1. Recognized via Dectin-1, schizophyllan enables precise delivery of oligonucleotide drugs and antigens to antigen-presenting cells, thus holding great potential in the treatment of inflammatory diseases and vaccine development.
Methyl protodioscin (NSC-698790; Smilax saponin B) is a multi-target, selective, steroidal diglycoside inhibitor with antitumor activity that induces cell cycle arrest. The mechanism of action of Methyl protodioscin is complex, involving the induction of G2/M cell cycle arrest, regulation of the Bcl-2/Bax apoptotic pathway, inhibition of the Akt1/c-Myc axis and MAPK/ERK signaling, while simultaneously downregulating ADAM15 and inducing FOXO1 to reduce cholesterol synthesis. It also inhibits the JNK/c-Jun pathway, reducing the production of inflammatory factors (IL-6, TNF-α). Methyl protodioscin exhibits significant antitumor (inhibiting proliferation, migration, invasion, and inducing apoptosis), anti-inflammatory, and anti-restenosis activities. Methyl protodioscin can be used in research on lung cancer, prostate cancer, pancreatic cancer, and other tumors, as well as inflammatory diseases such as airway inflammation and enteritis.
Trimebutine is a multi-target inhibitor and opioid receptor agonist with antimuscarinic activity. Trimebutine inhibits L-type Ca2+ channels and large-conductance calcium-activated potassium channels (BKCa channels), thereby inhibiting extracellular calcium influx and potassium ion efflux. Trimebutine also targets Toll-like receptors, inhibits Toll-like receptor 2/4/7/8/9 signals, and inhibits LPS-induced IRAK1 activation, as well as ERK1/2, JNK and NF-κB activation, thereby exerting anti-inflammatory effects. Trimebutine also induces tumor cell apoptosis by inhibiting the AKT/ERK pathway. Trimebutine also inhibits excessive contraction of smooth muscle and can be used in the study of gastrointestinal disorders such as irritable bowel syndrome (IBS).
Indirubin-3′-oxime (IDR3O), a synthetic derivative of indirubin, is a potent inhibitor of cyclin-dependent kinases (CDKs) and glycogen synthase kinase 3β (GSK3β). Indirubin-3′-oxime directly inhibits the activity of all three isoforms of JNK (JNK1, JNK2, and JNK3), with IC50s of 0.8 μM, 1.4 μM, and 1.0 μM, respectively. Indirubin-3′-oxime can enhance height growth via activation of Wnt/β-catenin signaling in chondrocytes.
PT109 is an orally active, blood-brain barrier permeable multi-kinase inhibitor. By inhibiting PTBP1, PT109 promotes the switch of pyruvate kinase isoform from PKM2 to PKM1, thereby effectively inhibiting the proliferation and migration of glioblastoma multiforme and inducing its reprogramming into oligodendrocytes. PT109 also targets and regulates key signaling molecules such as JNK, SGK1, GSK3β to exert neuroprotective effects including promoting neurogenesis, inducing synapse formation and alleviating neuroinflammation. In Alzheimer's disease models, PT109 exhibits significant efficacy in improving spatial learning ability, along with excellent in vivo pharmacokinetic properties. PT109 can be used to investigate metabolic reprogramming of glioblastoma multiforme and neuroprotective mechanisms of Alzheimer's disease.
Trimebutine maleate is a multi-target inhibitor and opioid receptor agonist with antimuscarinic activity. Trimebutine maleate inhibits L-type Ca2+ channels and large-conductance calcium-activated potassium channels (BKCa channels), thereby inhibiting extracellular calcium influx and potassium ion efflux. Trimebutine maleate also targets Toll-like receptors, inhibits Toll-like receptor 2/4/7/8/9 signals, and inhibits LPS-induced IRAK1 activation, as well as ERK1/2, JNK and NF-κB activation, thereby exerting anti-inflammatory effects. Trimebutine maleate also induces tumor cell apoptosis by inhibiting the AKT/ERK pathway. Trimebutine maleate also inhibits excessive contraction of smooth muscle and can be used in the study of gastrointestinal disorders such as irritable bowel syndrome (IBS).
Isosinensetin is a flavonoid compound and an inhibitor of HIV-1 protease and PTP1B (IC50: 2.61 µM; Ki: 0.92 µM). Isosinensetin inhibits P-glycoprotein (P-gp) in MDR1-MDCKII cells. Isosinensetin has multiple activities such as anti-tumor, anti-viral, anti-inflammatory, and antioxidant effects. Isosinensetin can be used in the research of various diseases including cancer, inflammation, osteoporosis, diabetes, etc.
Gigantol is an orally active bibenzyl compound. Gigantol targets MYC to promote its ubiquitin-proteasomal degradation and inhibit the growth of lung cancer cells. Gigantol exerts anti-lung cancer activity by inducing ferroptosis (Ferroptosis) via the SLC7A11-GPX4 axis. Gigantol restores the sensitivity of mcr-harboring multidrug-resistant bacteria to colistin. Gigantol ameliorates carbon tetrachloride-induced liver injury by inhibiting the activation of the JNK/cPLA2/12-LOX inflammatory pathway. Gigantol promotes cholesterol metabolism and progesterone biosynthesis in Leydig cells. Gigantol can be used in studies related to diseases such as lung cancer, multidrug-resistant Gram-negative bacterial infections, and acute liver injury.
Peruvoside is a potent inhibitor of Src, PI3K, JNK, STAT, and EGFR. Peruvoside induces apoptosis and autophagy and possesses a broad spectrum of anticancer activity in breast, lung, liver cancers and leukemia. Peruvoside is a broad-spectrum and potent antiviral activity against positive-sense RNA viruses. Peruvoside sensitizes Gefitinib (HY-50895)-resistant tumour cells (A549, PC9/gef and H1975) to Gefitinib.
Armepavine, found in Nelumbo nucifera, is an orally active NF-κB inhibitor. Armepavine attenuates expression of p-p65, α-SMA, p-JNK1/2, p-ERK1/2, p-p38α stimulated by TNF-α and LPS. Armepavine suppresses NF-κB nuclear translocation, IκBα phosphorylation, and collagen deposition. Armepavine can be used for the research of hepatic fibrosis and leukemia.
Murrayafoline A is a carbazole alkaloid that can be extracted from Murraya tetramera. Murrayafoline A directly targets Specificity protein 1 (Sp1), thereby inhibiting NF-κB and MAPK signaling pathways. Murrayafoline a induces a G0/G1-phase arrest in platelet-derived growth factor (PDGF)-stimulated vascular smooth muscle cells. Murrayafoline A attenuates the Wnt/β-catenin pathway by promoting the degradation of intracellular β-catenin proteins. Murrayafoline A enhances the contraction of rat ventricular myocytes and L-type calcium current by activating protein kinase C. Murrayafoline A inhibits LPS (HY-D1056)-induced neuroinflammation in vivo. Murrayafoline A can be used for the study of inflammation, vascular complications and colon cancer.
KMS99220 is an orally active, blood-brain barrier-permeable activator of the Nrf2 inhibitory protein Keap-1. KMS99220 enhances the activity of AMPK, activates the Nrf2 signaling pathway, and reduces the phosphorylation of IκB, nuclear translocation of NFκB, as well as the phosphorylation levels of JNK, IKK and p38 MAPK via HO-1. KMS99220 binds to Keap1 to trigger the nuclear translocation of Nrf2, induces the expression of HO-1, NQO1, GCLC, GCLM and proteasome subunits; enhances proteasomal enzymatic activity; inhibits iNOS expression, nitric oxide production and IL-1β generation; attenuates microglial activation; reduces α-synuclein aggregation; and prevents dopaminergic neuron degeneration and motor dysfunction. KMS99220 prevents the degeneration of dopaminergic neurons in the substantia nigra, induces the expression of Nrf2 downstream target genes, and effectively ameliorates associated motor dysfunction in a mouse model of Parkinson's disease. KMS99220 is applicable to research related to Parkinson's disease.
AEG3482 is a potent antiapoptotic compound that inhibits Jun kinase (JNK) activity through induced expression of heat shock protein 70 (HSP70). AEG3482 directly binds HSP90, thereby facilitating HSF1-dependent expression of HSP70 and HSP25.
Carminic acid is a widely used and orally active natural red pigment that can be used in industries such as food, cosmetics, and pharmaceuticals. In addition, carminic acid has anti-inflammatory and antioxidant activities.
Ceramide 3 (N-Stearoyl phytosphingosine) is an orally active major component of intercellular lipids in the stratum corneum of the skin, and belongs to the ceramide family. Ceramide 3 inhibits c-jun and NF-κB activation induced by Histamine (HY-B1204), and suppresses the expression of IL-4 and TNF-α. Ceramide 3 inhibits scratching behavior and vascular permeability in mice, and exhibits antihistamine effects in guinea pig ileum. Ceramide 3 improves skin barrier function, reduces transepidermal water loss, erythema and the number of circulating epidermal cells, and accelerates barrier repair of irritated or dysfunctional skin.
6-Hydroxyflavone is an orally effective flavonoid compound. 6-Hydroxyflavone can inhibit LPS (HY-D1056) -induced NO production and has anti-inflammatory effects. 6-Hydroxyflavone promotes osteoblast differentiation by activating AKT, ERK 1/2 and JNK signaling pathways. 6-Hydroxyflavone has an inhibitory effect on bovine hemoglobin (BHb) glycosylation. 6-Hydroxyflavone has a kidney protective effect. In addition, 6-Hydroxyflavone enhances GABA-induced current through the Benzodiazepine sites of γ-aminobutyric acid (GABAA) receptors. 6-Hydroxyflavone shows a clear preference for α2 - and α3 - subtypes, which play an anti-anxiety role.
Drofenine (Cycloadiphene; Hexahydroadiphenine) hydrochloride is an brain-penetrant antispasmodic agent. Drofenine hydrochloride is a Kv2.1 channel inhibitor with human IC50 of 9.53 μM. Drofenine hydrochloride is a butyrylcholinesterase (BChE) inhibitor with Ki of 0.003 mM, and is a TRPV3 activator. Drofenine hydrochloride blocks Kv2.1-dependent potassium efflux, inhibits Kv2.1/JNK/NF-κB and IkBa/NF-kB signaling, suppresses Kv2.1 mRNA/protein expression. Drofenine suppresses oligomeric Aβ-induced microglial NLRP3 inflammasome activation and neuronal Tau hyperphosphorylation, improves cognitive impairment, promotes neurite outgrowth. Drofenine hydrochloride induces calcium influx in keratinocytes and exert cytotoxicity against keratinocytes. Drofenine hydrochloride ameliorates diabetic peripheral neuropathy -like pathology. Drofenine hydrochloride can be used for the researches of Alzheimer's disease, diabetic peripheral neuropathy and smooth muscle spasm.
Astragaloside IV (Standard) is the analytical standard of Astragaloside IV. This product is intended for research and analytical applications. Astragaloside IV, an active component isolated from Astragalus membranaceus, suppresses the activation of ERK1/2 and JNK, and downregulates matrix metalloproteases (MMP)-2, (MMP)-9 in MDA-MB-231 breast cancer cells.
CMX-8933 is an octapeptide fragment of the goldfish brain neurotrophic factor ependymin. CMX-8933 increases the enzymatic activity of c-Jun N-terminal kinase (JNK), increases the phosphorylation of JNK and c-Jun proteins, and increases the cellular levels of c-Jun and c-FosmRNA. CMX-8933 can be used to study the role of ependymin in neuroplasticity, learning, memory formation, and neural regeneration.
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