Nitric Oxide Signaling (NOS)

S-MTC acetate (S-Methyl-L-thiocitrulline acetate) is a potent inhibitor of inducible nitric oxide synthase (iNOS), selectively inhibiting iNOS while preserving the activity of constitutive nitric oxide synthase (nNOS). This compound is valuable for studying the roles of nitric oxide in various physiological and pathological processes, particularly in inflammation and neuroprotection research. Its specificity makes it an important tool for investigating the differential effects of nitric oxide in cellular signaling pathways.

Schisanchinin D is an NO release inhibitor derived from the fruits of Schisandra chinensis. It effectively inhibits the release of nitric oxide (NO) in lipopolysaccharide (LPS)-activated primary murine BV2 microglia cells. This compound holds potential for research in neurodegenerative diseases, particularly Alzheimer's disease (AD), due to its impact on microglial activation and neuroinflammatory processes.

Rubranol is a selective inhibitor of nitric oxide (NO) synthase, significantly reducing NO production in response to lipopolysaccharide (LPS) stimulation in activated macrophages, achieving a notable 74% inhibition. This compound is useful for researchers studying inflammatory responses and the role of NO in various pathological conditions. Its specific action on NO synthase makes it a valuable tool for investigating the modulation of nitric oxide pathways in cellular processes.

3β,15α-Dihydroxy-7,11,23-trioxo-lanost-8-dien-26-oic acid is a triterpene compound with a primary mechanism as a nitric oxide (NO) production inhibitor. It effectively suppresses NO production in BV-2 microglial cells stimulated by lipopolysaccharide (LPS), demonstrating an IC50 value of 6.50 μM. This compound serves as a valuable tool for anti-inflammatory research, potentially contributing to the development of therapeutic strategies targeting inflammatory pathways.

N-Benzylacetamidine hydrobromide is a selective inhibitor of inducible nitric oxide synthase (iNOS), exhibiting an IC50 of 0.20 μM. This compound is valuable for research focused on the modulation of nitric oxide production in inflammatory processes. Its selective action makes it a suitable tool for studying iNOS-related pathophysiology and potential therapeutic applications in related diseases.

(2R)-6-Methoxynaringenin is a selective inhibitor of nitric oxide (NO) synthesis. This flavonoid exhibits significant biological activity, with an IC50 value of 25.8 μM for NO production inhibition. Its ability to modulate NO levels makes it a valuable tool for research applications focused on vascular biology, inflammation, and associated signaling pathways.

Cindunistat is a selective inhibitor of inducible nitric oxide synthase (iNOS), demonstrating potent oral bioactivity. This compound is valuable for investigating the role of iNOS in various inflammatory and pathological conditions. Research applications include studies on cytokine modulation, neuroinflammation, and cardiovascular diseases, making it a crucial tool for exploring therapeutic interventions in nitric oxide-mediated pathways.

Demethylregelin is a triterpene that functions as an inhibitor of inducible nitric oxide synthase (iNOS). It effectively decreases iNOS protein expression and subsequent nitric oxide production in RAW264.7 macrophages upon lipopolysaccharide stimulation. This compound exhibits notable anti-inflammatory properties and is useful in research focusing on inflammatory signaling pathways and modulation of nitric oxide levels in cellular models.

NG-Amino-L-arginine hydrochloride is a potent inhibitor of nitric oxide synthase (NOS), specifically targeting the nNOS, iNOS, and eNOS isoforms. It effectively induces inactivation of these enzymes, with Ki values of 0.3 μM, 3 μM, and 2.5 μM, respectively. This reagent is valuable for research applications focused on the modulation of nitric oxide pathways and their roles in various physiological and pathological processes.

N-cis-Feruloyl tyramine is a natural phenolic compound that acts as an inhibitor of nitric oxide (NO) production. It demonstrates moderate inhibitory effects on lipopolysaccharide (LPS)-activated NO production in RAW 264.7 macrophage cells. This compound can be utilized in research to explore inflammatory responses and the modulation of NO signaling pathways.

Anti-inflammatory agent 1 is a nitric oxide synthase inhibitor that modulates inflammatory processes by reducing nitric oxide production. This compound exhibits significant anti-inflammatory activity, making it a valuable tool for research focused on conditions characterized by excessive inflammation. Its applications extend to studying various inflammatory pathways and assessing the therapeutic potential of nitric oxide modulation in diverse biological contexts.

Longiferone B is a daucane sesquiterpene derived from the rhizomes of Boesenbergia longiflora, acting as an inhibitor of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). It exhibits significant anti-inflammatory properties, effectively reducing nitric oxide production with an IC50 value of 21.0 μM. Longiferone B also suppresses the mRNA expression of iNOS and COX-2, making it a valuable compound for research in inflammation-related studies.

DL-1′-Acetoxychavicol acetate is a potent inhibitor of nitric oxide synthase (NOS). This compound demonstrates significant anti-inflammatory and anticancer properties by suppressing the activity of NADPH oxidase (NOX), inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2) in inflammatory cells. It has been shown to exhibit preventive effects in various inflammation-related cancer models, making it a valuable tool for research into inflammatory diseases and cancer therapy.

α-Chaconine is an inhibitor of COX-2 and iNOS, which demonstrates significant anti-inflammatory activity. It effectively reduces the transcriptional expression of COX-2, IL-1β, IL-6, and TNF-α. Additionally, α-Chaconine suppresses LPS-induced expression of iNOS and COX-2 at both the protein and mRNA levels, along with their promoter activities in RAW 264.7 macrophages. This makes α-Chaconine a valuable reagent for studies focused on inflammation and related signaling pathways.

GW274150 is a potent and highly selective inhibitor of iNOS, reduces experimental renal ischemia/reperfusion injury.

L-NIO dihydrochloride is a potent, non-selective and NADPH-dependent nitric oxide synthase (NOS) inhibitor.

Diphenyleneiodonium chloride has been shown to be a potent irreversible inhibitor of NOS2 (iNOS) from macrophages and NOS3 (eNOS) from endothelial cells.

2,4-Diamino-6-hydroxypyrimidine is a specific GTP cyclohydrolase I inhibitor (the rate-limiting enzyme in de novo pterin synthesis), blocks BH4 synthesis and suppresses NO production.

1400W Dihydrochloride is a slow, tight binding, potent and highly selective inhibitor of inducible nitric oxide synthase (Kd = 7 nM). Selective over nNOS and eNOS (Ki values are 2 and 50 μM respectively). Cell-permeable and active in vivo.

L-NIL is a potent and selective inhibitor of inducible NO synthase with IC50s of 3.3 and 92 μM for mouse inducible NO synthase and rat brain constitutive NO synthase, respectively.

7-Nitroindazole, a heterocyclic compound, acts as a selective inhibitor for neuronal nitric oxide synthase showing a 10-fold selectivity for neuronal NOS.

SDMA (Symmetric dimethylarginine) is an endogenous inhibitor of nitric oxide (NO) synthase activity.

3-Bromo-7-nitroindazole is a more potent and selective inhibitor of neuronal nitric oxide synthase (nNOS) than eNOS or inducible nitric oxide synthase (iNOS).

IC87201, an inhibitor of PSD95-nNOS protein-protein interactions, suppresses NMDAR-dependent NO and cGMP formation.

ZL006 is a potent inhibitor of nNOS/PSD-95 interaction, and inhibits NMDA receptor-mediated NO synthesis.

Agmatine sulfate exerts modulatory action at multiple molecular targets, such as neurotransmitter systems, ion channels and nitric oxide synthesis. It is an endogenous agonist at imidazoline receptor and a NO synthase inhibitor.

2-Iminobiotin (Guanidinobiotin) is a biotin (vitamin H or B7) analog. 2-Iminobiotin is a reversible nitric oxide synthases inhibitor with Kis of 21.8 and 37.5μM for murine iNOS and rat n-cNOS, respectively.

1400W is a selective inhibitor of inducible nitric-oxide synthase (iNOS) with a Kd value of ≤ 7 nM, demonstrating slow and tight binding characteristics. This compound effectively inhibits iNOS induction in microglial cells, leading to reduced nitric oxide production, which in turn helps alleviate oxidative stress and neuronal apoptosis in the rat cerebral cortex. 1400W's ability to ameliorate spatial memory dysfunction associated with acute hypobaric hypoxia-reoxygenation makes it a valuable tool for research in neuroprotection and neurodegenerative disease studies.

iNOS-IN-5 (Compound BN-4) is a potent inhibitor of inducible nitric oxide synthase (iNOS) with an IC50 of 0.1707 μM, effectively reducing nitric oxide levels in LPS-induced RAW264.7 cells. This compound demonstrates protective properties against hypoxic injury by decreasing reactive oxygen species (ROS) and lactate dehydrogenase expression, exhibiting significant anti-necrosis and anti-apoptosis effects. Additionally, iNOS-IN-5 has shown neuroprotective activity and protective effects against cerebral ischemia in SD rat models, while also being capable of penetrating the blood-brain barrier.

Glycylglycine hydrochloride hydrate is an iNOS inhibitor that acts as a non-selective dipeptidase substrate. This compound is capable of passive diffusion across cell membranes, where it is hydrolyzed to glycine, playing a role in energy metabolism and antioxidant activities. Glycylglycine hydrochloride hydrate promotes the proliferation of spermatogonial stem cells and mitigates astrocyte overactivation while decreasing nitric oxide release. Additionally, it upregulates the expression of neurotrophic factors, aiding in nerve myelin repair. This reagent is suitable for research into male reproductive biology and the neuroprotective mechanisms in neurodegenerative diseases.

2-Thiouracil is a selective inhibitor of neuronal nitric oxide synthase (nNOS), exhibiting a Ki value of 20 μM. It effectively antagonizes BH4-induced nNOS dimerization, thereby modulating nitric oxide synthesis in neuronal tissues. In addition to its role as an nNOS inhibitor, 2-Thiouracil also has antithyroid properties and serves as a specific marker for melanoma detection. Furthermore, it promotes root growth in pea and corn, making it a valuable tool for various agricultural and biochemical research applications.

Glycylglycine, an iNOS inhibitor, is a dipeptide that serves as a non-selective glycylglycine dipeptidase substrate. It effectively crosses cell membranes through passive diffusion and is subsequently hydrolyzed to glycine, which participates in energy metabolism and antioxidant defense. This compound promotes the proliferation of spermatogonial stem cells (SSCs), mitigates astrocyte overactivation, and reduces nitric oxide (NO) release while enhancing the expression of neurotrophic factors such as PDGFA, FGF2, and CNTF, thereby supporting nerve myelin repair. Glycylglycine is valuable in research on male reproductive biology and neurodegenerative diseases, including the investigation of neuroprotective mechanisms in conditions like multiple sclerosis.