u937

SCH772984 is an ERK inhibitor that inhibits ERK1 and ERK2 (IC50=4 1 nM) and is highly selective and ATP-competitive. SCH772984 exhibits antitumor activity against BRAF or RAS mutant cells.

Bindarit (AF2838)is an aryl hydrocarbon receptor (AHR) antagonist with IC50 of 39.9 nM in the human glioblastoma U87 cell line. BAY-218 inhibition of AhR stimulates pro-inflammatory monocyte and T cell responses in vitro and drives anti-tumor immune responses, leading to reduced tumor growth in vivo.

RIPK1-IN-9 is a potent and selective inhibitor of RIPK1, a dihydronaphthone compound, which inhibits U937 and L929 cells with an IC50 of 2 nM and 1.3 nM, respectively.

Apoptosis Inhibitor was a novel inhibitor of programmed cell death associate with caspase-3 inhibition.

TAK-243 (MLN7243) is a selective inhibitor of the ubiquitin-activating enzyme UAE (IC50=1 nM), blocking ubiquitin binding and disrupting both mono-ubiquitin signaling and overall protein ubiquitination. TAK-243 exhibits antitumor activity and promotes apoptosis.

Tamarixetin (4'-O-Methyl Quercetin) is a natural flavonoid derivative of quercetin that exhibits anti-inflammatory and antioxidative effects, offering protection against cardiac hypertrophy.

Schisandrin C (Wuweizisu-C) is a phytochemical lignan isolated from Schizandra chinensis Baill; shows anticancer-effects in human leukemia U937 cells.

GSK481 (GSK'481) is a RIP1(Receptor Interacting Protein Kinase1) inhibitor. Inhibition of RIP1 has been shown to hinder cell necrotic death.

AI-10-47 (1H-Benzimidazole, 2-(2-pyridinyl)-6-(trifluoromethoxy)-AI-10-47) is a small molecule inhibitor of CBFβ-RUNX binding(IC50 : 3.2 μM).

MK2-IN-3 (MK2 Inhibitor III) is a potent, cell-permeable inhibitor of mitogen-activated protein kinase-activated protein kinase 2 (MAPKAP-K2 or MK-2) and can be used for the treatment of rheumatoid arthritis

Aminopeptidase N (AP-N) inhibitor is a reversible inhibitor of AP-N/CD13 (IC50 = 25 μM). It is selective for AP-N/CD13 over matrix metalloproteinase-9 (MMP-9), angiotensin converting enzyme (ACE), neutral endopeptidase (NEP), γ-glutamyl transpeptidase, and the serine proteases dipeptidyl peptidase 4 (DPP-4) and cathepsin G at a concentration of 1 mM. AP-N inhibitor is non-cytotoxic to U937 cells at a concentration of 100 μM.

α-Melanocyte-stimulating hormone (α-MSH) is a 13-amino acid peptide hormone produced by post-translational processing of proopiomelanocortin (POMC) in the pituitary gland, as well as in keratinocytes, astrocytes, monocytes, and gastrointestinal cells.1It is an agonist of melanocortin receptor 3 (MC3R) and MC4R that induces cAMP production in Hepa cells expressing the human receptors (EC50s = 0.16 and 56 nM, respectively).2α-MSH (100 pM) reducesS. aureuscolony formation andC. albicansgerm tube formationin vitro.3It inhibits endotoxin-, ceramide-, TNF-α-, or okadaic acid-induced activation of NF-κB in U937 cells.1α-MSH reduces IL-6- or TNF-α-induced ear edema in mice.4It also prevents the development of adjuvant-induced arthritis in rats and increases survival in a mouse model of septic shock. Increased plasma levels of α-MSH are positively correlated with delayed disease progression and reduced death in patients with HIV.1 1.Catania, A., Airaghi, L., Colombo, G., et al.α-melanocyte-stimulating hormone in normal human physiology and disease statesTrends Endocrinol. Metab.11(8)304-308(2000) 2.Miwa, H., Gantz, I., Konda, Y., et al.Structural determinants of the melanocortin peptides required for activation of melanocortin-3 and melanocortin-4 receptorsJ. Pharmacol. Exp. Ther.273(1)367-372(1995) 3.Cutuli, M., Cristiani, S., Lipton, J.M., et al.Antimicrobial effects of a-MSH peptidesJ. Leukoc. Biol.67(2)233-239(2000) 4.Lipton, J.M., Ceriani, G., Macaluso, A., et al.Antiiinflammatory effect of the neuropeptide a-MSH in acute, chronic, and systemic inflammationAnn. N.Y. Acad. Sci.25(741)137-148(1994)

C6 L-erythro Ceramide is a bioactive sphingolipid and cell-permeable analog of naturally occurring ceramides. It is metabolized by ceramide glucosyltransferase to form C6 L-erythro glucosylceramide. C6 L-erythro Ceramide is cytotoxic to U937 cells (IC50 = 18 μM).

Mahanine has effects on the activation of the apoptotic pathway in human leukemia U937 cells, causes the mitochondrial membranes to lose their permeability, resulting in caspase-3 activation and apoptosis. Mahanine can reverse an epigenetically silenced g

Eicosapentaenoic Acid (EPA) sodium, an orally active omega-3 long-chain polyunsaturated fatty acid (ω-3 LC-PUFA), demonstrates a unique ability to demethylate DNA, thereby facilitating the re-expression of the tumor suppressor gene CCAAT enhancer-binding protein δ (C EBPδ). This compound also activates the RAS ERK C EBPβ pathway by demethylating H-Ras intron 1 CpG island in U937 leukemia cells and promotes the relaxation of vascular smooth muscle cells, leading to vasodilation.

Oxanosine is an analog of guanosine that has been found in S. capreolus and has diverse biological activities, including antibacterial, antiviral, and anticancer properties. It is active against a variety of bacteria, including S. flexneri, P. mirabilis, and E. coli (MICs = 6.25, 12.5, 25 µg ml, respectively, on peptone, but not nutrient, agar). Oxanosine inhibits replication of the HIV-1 strain IIIb in infected CEM and U937, but not H9, cells (EC50s = 7, 27, and >500 µg ml, respectively). It also inhibits the growth of HeLa human cervical cancer cells (IC50 = 32 µg ml) and reduces tumor growth in a murine L1210 lymphocytic leukemia model.

5β,6β-Epoxycholestanol is an oxidative metabolite of cholesterol produced through radical and non-radical oxidation at the 5,6-double bond. It induces the release of lactate dehydrogenase (LDH) and apoptosis in differentiated macrophage U937 cells. This compound has been identified in human fatty streaks and advanced atherosclerotic lesions but is absent in normal aortic tissue.

6-OAU (GTPL5846)(GTPL5846; 6-n-octylaminouracil) is a surrogate agonist of GPR84; activates human GPR84 in the presence of Gqi5 chimera in HEK293 cells with an EC50 of 105 nM in the PI assay.

ML390 exerts its potent differentiation effect on multiple leukemia models.

C8 D-threo Ceramide is a bioactive sphingolipid and cell-permeable analog of naturally occurring ceramides. It is cytotoxic to U937 cells (IC50 = 17 μM) and induces nuclear DNA fragmentation 5- to 6-fold more potently than C8 ceramide . C8 D-threo Ceramide is a substrate for E. coli diacylglycerol kinase. It activates ceramide-activated protein kinase (CAPK) in U937 cells. C8 D-threo Ceramide also enhances V. cholerae cytolysin pore formation in liposome lipid membranes, as measured by calcein release, with a 50% release dose (RD50) value of ~5 μg/ml.

Anandamide (arachidonoyl ethanolamide; AEA) is an endogenous lipid with cannabinergic activity; along with 2-arachidonoyl glycerol, it forms part of the endocannabinoid system. AEA undergoes reuptake into neurons by a facilitated process. Controversy exists as to whether there is a specific AEA transporter, or instead the uptake process is simply driven by hydrolysis of AEA by intracellular fatty acyl amide hydrolase (FAAH). CAY10412 is an analog of AEA that has no intrinsic binding affinity for either CB1 or CB2 receptors. It is a potent inhibitor of AEA reuptake in U937 lymphoma cells, with an IC50 of 3 μM. CAY10412 could be a useful tool for distinguishing the competing transporter theories. The pharmacology of CAY10412 is largely unexplored; it may enhance endocannabinoid signalling by augmenting endocannabinoid concentrations.

Bcl-2 Mcl-1-IN-4 (compound 20) acts as a dual inhibitor targeting Bcl-2 (Ki=0.49 μM) and Mcl-1 (Ki=0.51 μM). This compound effectively suppresses cancer cell proliferation and induces apoptosis in U937 cells. It is utilized in cancer research.

Glycozolidal (compound 12) is a carbazole alkaloid that exhibits antimicrobial activity against Porphyromonas gingivalis (P. gingivalis). In vitro studies have shown that Glycozolidal displays cytotoxic effects on human gingival fibroblasts (HGFs) and monocytic cells (U937), with IC50 values of 120.86 µg mL and 97.74 µg mL, respectively.

Bepafant is a platelet activating factor (PAF) antagonist. Bepafant may produce significant anti-inflammatory effects. Bepafant triggered apoptosis in NB4, KG1, and NB4-MR4 cells where PTEN was expressed, but not in THP1 and U937 cells where PTEN was abse