Monoamine Oxidase Inhibitor

Rasagiline (R-AGN1135) is a highly potent selective irreversible mitochondrial monoamine oxidase (MAO) inhibitor with IC₅₀s of 4.43 nM and 412 nM for rat brain MAO B and A activity, respectively. Rasagiline is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

Indazole, also called isoindazole, a heterocyclic aromatic organic compound. Its derivatives display a broad variety of biological activities including anti-inflammatory, antibacterial, anti-HIV, antiarrhythmic, antifungal and antitumour properties. Indazole and its derivatives can be used for research of cancer, neurological disorders, cardiovascular diseases, gastrointestinal diseases.

PXS-5505 anhydrous (LOX-IN-3 dihydrochloride) is an orally active lysyl oxidase (LOX) inhibitor. PXS-5505 anhydrous can be used for fibrosis, cancer and angiogenesis research.

Methylene blue trihydrate (C.I. Basic Blue 9 trihydrate) is a guanylyl cyclase (sGC), monoamine oxidase A (MAO-A) and NO synthase (NOS) inhibitor. Methylene blue trihydrate is a vasopressor and is often used as a dye in several medical procedures. Methylene blue trihydrate has antinociception, antimalarial, antidepressant and anxiolytic activity effects. Methylene Blue trihydrate has the potential for methemoglobinemias, neurodegenerative disorders and ifosfamide-induced encephalopathytreatment.

Harmane is a benzodiazepine receptor inhibitor (IC₅₀=7 μM), with IC₅₀ values for mACh, Opioid Receptor, MAO-A/B, and α2-adrenergic receptor of 24 μM, 2.8 μM, 0.5 μM, 5 μM, and 18 μM, respectively. Harmane inhibits the I1 imidazoline receptor (IC₅₀ = 30 nM) to reduce blood pressure and has antidepressant, anti-anxiety, anticonvulsant, and analgesic effects. Harmane inhibits dopamine biosynthesis by decreasing tyrosine hydroxylase (TH) activity and enhancing L-DOPA-induced cytotoxicity in PC12 cells. Additionally, Harmane can increase the mutagenic effect induced by 2-acetylaminofluorene (AAF).

Clorgyline (M&B 9302) is a selective, irreversible monoamine oxidase A (MAO-A) inhibitor that can cross the blood-brain barrier and exhibits activity against the 5-HT Receptor at very high doses. Clorgyline regulates monoamine neurotransmitter levels, the release of dopamine and acetylcholine, the uptake and effects of Tyramine (HY-W007606), noradrenergic function, circadian locomotor activity rhythms, feeding behavior, and body weight. Clorgyline induces tumor-suppressive transcriptional programs, secretory differentiation, androgen signaling regulation, Bcl-2 expression, and radioprotective effects in non-malignant cells. Clorgyline is used in the research of high-grade prostate cancer, Huntington's disease, major affective disorder, radiation-induced normal tissue toxicity, and obesity.

Vafidemstat (ORY-2001) is an oral, brain penetrant, dual lysine-specific histone demethylase (LSD1)/MAO-B inhibitor.

Rasagiline (R-AGN1135) mesylate is a highly potent selective irreversible mitochondrial monoamine oxidase (MAO) inhibitor with IC₅₀s of 4.43 nM and 412 nM for rat brain MAO B and A activity, respectively. Rasagiline (mesylate) is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

Moclobemide (Ro111163) is a brain-penetrant and reversible monoamine oxidase (MAO-A) inhibitor with an IC₅₀ of 6.061 μM for hMAO-A.Moclobemide up-regulates proliferation of hippocampal progenitor cells in chronically stressed mice.

4-Hydroxyderricin, the major active ingredients of Angelica keiskei Koidzumi, is an orally active, potent selective MAO-B (Monoamine oxidase inhibitors) inhibitor with an IC₅₀ of 3.43 μM. 4-Hydroxyderricin also mildly inhibits dopamine β (DBH)-hydroxylase activity. 4-Hydroxyderricin has antidepressant activity, anti-allergic, anti-diabetic, anti-oxidant, and antitumor effects. 4-Hydroxyderricin promotes apoptosis and cell cycle arrest through regulating PI3K/AKT/mTOR pathway in hepatocellular cells. 4-Hydroxyderricin inhibits osteoclast formation and accelerates osteoblast differentiation. 4-Hydroxyderricin is promising for research of inflammatory diseases.

Harmol is an orally active β-carboline alkaloid. Harmol is a TFEB activator and monoamine oxidase inhibitor. Harmol can induce cell mitosis, Autophagy and Apoptosis. Harmol promotes the degradation of α-synuclein by regulating the autophagy-lysosomal pathway. Harmol has anti-tumor, anti-depressant and anti-aging activities. Harmol improves motor impairment in a mouse Parkinson's disease model.

Proadifen (SKF-525A) hydrochloride is a non-competitive Cytochrome P450 inhibitor with an IC₅₀ value of 19 μM. Proadifen hydrochloride reduces monoamine oxidase A (MAO-A) activity and reverses the antidepressantlike behavioral effect of Imipramine (HY-B1490A) and Desipramine (HY-B1272A) in rats. Proadifen hydrochloride also reduces N, N-dimethyltryptamine (DMT) metabolism in liver microsomes and inhibits N-demethylationand Acridone (HY-W007771) formation. Proadifen hydrochloride augments Lipopolysaccharide (LPS) (HY-D1056)-induced fever and exacerbates Prostaglandin E2 (PGE2) (HY-101952) levels in the rat. Proadifen hydrochloride is promising for research of metabolism-related deseases, ovarian carcinoma, inflammation and dopamine neurons-related deseases.

Simtuzumab (AB 0024; GS 6624) is a monoclonal antibody directed against Lysyl oxidase like-2 (LOXL2). Simtuzumab non-competitively blocks collagen cross-linking, reduces LOXL2 protein expression and attenuates extracellular matrix changes. Simtuzumab reduces myocardial fibrosis and prevents cardiac dysfunction. Simtuzumab lowers Myh7 and Nppa gene expression, reduces contraction heterogeneity, and cuts COL1A1 deposition. Simtuzumab can be used for the research of LMNA mutation-induced dilated cardiomyopathy, idiopathic pulmonary fibrosis, and primary sclerosing cholangitis.

Xanthoangelol, extracted from Angelica keiskei, suppresses obesity-induced inflammatory responses. Xanthoangelol possesses antibacterial activity. Xanthoangelol inhibits monoamine oxidases. Xanthoangelol induces apoptosis in neuroblastoma and leukemia cells.

Safinamide (FCE 26743; EMD 1195686) mesylate is a potent, selective, and reversible monoamine oxidase B (MAO-B) inhibitor (IC₅₀=0.098 μM) over MAO-A (IC₅₀=580 nM). Safinamide mesylate also blocks sodium channels and modulates glutamate (Glu) release, showing a greater affinity at depolarized (IC₅₀=8 μM) than at resting (IC₅₀=262 μM) potentials. Safinamide mesylate has neuroprotective and neurorescuing effects and can be used for the study of parkinson disease, ischemia stroke et.al.

PXS-5153A monohydrochloride is a potent, selective, orally active and fast-acting lysyl oxidase like 2/3 enzymatic (LOXL2/LOXL3) inhibitor, with an IC₅₀ of <40 nM for LOXL2 across all mammalian species and an IC₅₀ of 63 nM for human LOXL3. PXS-5153A monohydrochloride could reduce crosslinks and ameliorates fibrosis.

Osthenol (Ostenol) is a reversible, selective, competitive inhibitor of hMAO-A (IC₅₀=0.74 μM, K_i=0.26 μM), with antifungal and antibacterial activity. Osthenol inhibits the oxidative deamination of hMAO-A and regulates the metabolism of monoamine neurotransmitters. Osthenol also inhibits the PI3K/AKT signaling pathway to induce apoptosis of colon cancer cells, arrest the cell cycle at the G1 phase, and inhibit cell proliferation. Osthenol is mainly used in the study of neurological diseases and cancer, especially depression-related MAO-A targeted intervention and colon cancer.

Isatin (Indoline-2,3-dione) is a potent inhibitor of monoamine oxidase (MAO) with an IC₅₀ of 3 μM. Also binds to central benzodiazepine receptors (IC₅₀ against clonazepam, 123 μM). Also acts as an antagonist of both atrial natriuretic peptide stimulated and nitric oxide-stimulated guanylate cyclase activity. Shows effect on the serotonergic system.

Xanthone is a monoamine oxidase A (MAO-A) inhibitor with an IC₅₀ of 0.84 µM. Xanthon inhibits Norepinephrine (HY-13715) and high-K⁺-induced vasoconstriction with IC₅₀ values of 60.26 μM and 82.9 μM, respectively. Xanthon increases intracellular cyclic adenosine 3′,5′-monophosphate (cAMP) content and blocks Ca²⁺ channels. Xanthone is the scaffold of several pharmacologically active compounds.

1,4-Naphthoquinone is an inhibitor with broad-spectrum inhibitory activity targeting DNA polymerase, NF-κB and monoamine oxidase (MAO-A/B), with antibacterial and anti-biofilm efficacy. 1,4-Naphthoquinone is a competitive inhibitor of MAO-B (Ki=1.4 μM) and a non-competitive inhibitor of MAO-A (Ki=7.7 μM). 1,4-Naphthoquinone inhibits DNA polymerase pol α, β, γ, δ, ε, λ with IC₅₀ ranging from 5.57-128 μM. 1,4-Naphthoquinone inhibits tumor cell proliferation, induces apoptosis and necrosis, and has anti-angiogenic and anti-inflammatory activities by inducing oxidative stress, depleting glutathione (GSH), inhibiting DNA polymerase-mediated DNA synthesis and blocking NF-κB nuclear translocation. 1,4-Naphthoquinone can be used in anti-bacterial , anti-tumor and anti-inflammatory studies, including inhibition of melanoma and colon cancer cell growth and endothelial cell function, as well as LPS-induced inflammation models.