2-Methylthioadenosine diphosphate trisodium
(Synonyms: 2-甲基硫代二磷酸腺苷,2-Methylthio-ADP trisodium) 目录号 : GC60016An agonist of P2Y receptors
Cas No.:475193-31-8
Sample solution is provided at 25 µL, 10mM.
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2-Methylthioadenosine diphosphate (2-MeSADP) is an agonist of purinergic P2Y receptors with EC50s of 5.13 and 0.89 nM for human recombinant P2Y1 and P2Y12 receptors, respectively.1 It also acts as an agonist at rat P2Y1 and P2Y12 and mouse P2Y13 receptors (EC50s = 0.58, 0.89, and 6.2 nM, respectively).1,2 It induces platelet aggregation and inhibits cyclic AMP accumulation in platelet-rich plasma stimulated by prostaglandin E1 more potently than ADP .3
1.Sak, K., and Webb, T.E.A retrospective of recombinant P2Y receptor subtypes and their pharmacologyArch. Biochem. Biophys.397(1)131-136(2002) 2.Zhang, F.L., Luo, L., Gustafson, E., et al.P2Y13: Identification and characterization of a novel Gαi-coupled ADP receptor from human and mouseJ. Pharmacol. Exp. Ther.301(2)705-713(2002) 3.Macfarlane, D.E., Srovastava, P.C., and Mills, D.C.2-Methylthioadenosine[β-32P]diphosphate. An agonist and radioligand for the receptor that inhibits the accumulation of cyclic AMP in intact blood plateletsJ. Clin. Invest.71(3)420-428(1983)
Cas No. | 475193-31-8 | SDF | |
别名 | 2-甲基硫代二磷酸腺苷,2-Methylthio-ADP trisodium | ||
Canonical SMILES | O[C@H]([C@@H]1O)[C@](O[C@@H]1CO[P](O[P](O[Na])(O[Na])=O)(O[Na])=O)([H])N2C3=NC(SC)=NC(N)=C3N=C2 | ||
分子式 | C11H14N5Na3O10P2S | 分子量 | 539.24 |
溶解度 | PBS (pH 7.2): 10 mg/mL,Water: soluble | 储存条件 | Store at -20°C |
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1 mg | 5 mg | 10 mg | |
1 mM | 1.8545 mL | 9.2723 mL | 18.5446 mL |
5 mM | 0.3709 mL | 1.8545 mL | 3.7089 mL |
10 mM | 0.1854 mL | 0.9272 mL | 1.8545 mL |
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2.
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High pH-Sensitive Store-Operated Ca2+ Entry Mediated by Ca2+ Release-Activated Ca2+ Channels in Rat Odontoblasts
Front Physiol 2018 May 1;9:443.PMID:29765331DOI:10.3389/fphys.2018.00443.
Odontoblasts play a crucial role in dentin formation and sensory transduction following the application of stimuli to the dentin surface. Various exogenous and endogenous stimuli elicit an increase in the intracellular free calcium concentration ([Ca2+]i) in odontoblasts, which is mediated by Ca2+ release from intracellular Ca2+ stores and/or Ca2+ influx from the extracellular medium. In a previous study, we demonstrated that the depletion of Ca2+ stores in odontoblasts activated store-operated Ca2+ entry (SOCE), a Ca2+ influx pathway. However, the precise biophysical and pharmacological properties of SOCE in odontoblasts have remained unclear. In the present study, we examined the functional expression and pharmacological properties of Ca2+ release-activated Ca2+ (CRAC) channels that mediate SOCE and evaluated the alkali sensitivity of SOCE in rat odontoblasts. In the absence of extracellular Ca2+, treatment with thapsigargin (TG), a sarco/endoplasmic reticulum Ca2+-ATPase inhibitor, induced an increase in [Ca2+]i. After [Ca2+]i returned to near-resting levels, the subsequent application of 2.5 mM extracellular Ca2+ resulted in an increase in [Ca2+]i which is a typical of SOCE activation. Additionally, application of 2-Methylthioadenosine diphosphate trisodium salt (2-MeSADP), a P2Y1,12,13 receptor agonist, or carbachol (CCh), a muscarinic cholinergic receptor agonist, in the absence of extracellular Ca2+, induced a transient increase in [Ca2+]i. The subsequent addition of extracellular Ca2+ resulted in significantly higher [Ca2+]i in 2-MeSADP- or CCh-treated odontoblasts than in untreated cells. SOCE, that is activated by addition of extracellular Ca2+ in the TG pretreated odontoblasts was then suppressed by Synta66, BTP2, or lanthanum, which are CRAC channel inhibitors. Treatment with an alkaline solution enhanced SOCE, while treatment with HC030031, a TRPA1 channel antagonist, inhibited it. The amplitude of SOCE at pH 9 in the presence of HC030031 was higher than that at pH 7.4 in the absence of HC030031. These findings indicate that CRAC channel-mediated alkali-sensitive SOCE occurs in odontoblasts. SOCE is mediated by P2Y and muscarinic-cholinergic receptors, which are activated by endogenous ligands in odontoblasts.
Glycolysis and oxidative phosphorylation are essential for purinergic receptor-mediated angiogenic responses in vasa vasorum endothelial cells
Am J Physiol Cell Physiol 2017 Jan 1;312(1):C56-C70.PMID:27856430DOI:10.1152/ajpcell.00250.2016.
Angiogenesis is an energy-demanding process; however, the role of cellular energy pathways and their regulation by extracellular stimuli, especially extracellular nucleotides, remain largely unexplored. Using metabolic inhibitors of glycolysis (2-deoxyglucose) and oxidative phosphorylation (OXPHOS) (oligomycin, rotenone, and FCCP), we demonstrate that glycolysis and OXPHOS are both essential for angiogenic responses of vasa vasorum endothelial cell (VVEC). Treatment with P2R agonists, ATP, and 2-Methylthioadenosine diphosphate trisodium salt (MeSADP), but not P1 receptor agonist, adenosine, increased glycolytic activity in VVEC (measured by extracellular acidification rate and lactate production). Stimulation of glycolysis was accompanied by increased levels of phospho-phosphofructokinase B3, hexokinase (HK), and GLUT-1, but not lactate dehydrogenase. Moreover, extracellular ATP and MeSADP, and to a lesser extent adenosine, increased basal and maximal oxygen consumption rates in VVEC. These effects were potentiated when the cells were cultured in 20 mM galactose and 5 mM glucose compared with 25 mM glucose. Treatment with P2R agonists decreased phosphorylation of pyruvate dehydrogenase (PDH)-E1α and increased succinate dehydrogenase (SDH), cytochrome oxidase IV, and β-subunit of F1F0 ATP synthase expression. In addition, P2R stimulation transiently elevated mitochondrial Ca2+ concentration, implying involvement of mitochondria in VVEC angiogenic activation. We also demonstrated a critical role of phosphatidylinositol 3-kinase and Akt pathways in lactate production, PDH-E1α phosphorylation, and the expression of HK, SDH, and GLUT-1 in ATP-stimulated VVEC. Together, our findings suggest that purinergic and metabolic regulation of VVEC energy pathways is essential for VV angiogenesis and may contribute to pathologic vascular remodeling in pulmonary hypertension.
Effect of clopidogrel administration to healthy volunteers on platelet phosphorylation events triggered by ADP
Br J Haematol 2003 Feb;120(4):633-42.PMID:12588350DOI:10.1046/j.1365-2141.2003.04166.x.
The action of clopidogrel on platelet receptors was analysed using platelets obtained from 11 healthy volunteers given 75 mg of clopidogrel daily for 8 d. Samples of blood were taken before treatment and after 8 d of medication. Determination of 2-Methylthioadenosine diphosphate trisodium (2MesADP)-induced platelet aggregation, serine/threonine and tyrosine phosphorylations were performed in the absence or presence of the P2Y1-receptor-specific antagonist: adenosine 3'-phosphate 5'-phosphate (A3P5P) or the strong inhibitor of GPIIb/IIIa activation: SR121566. Major conclusions: 1). Serine and threonine phosphorylations of the myosin light chain (P20) and pleckstrin (P47) do not behave similarly, although they are both recognized as the result of phospholipase C pathway stimulation triggered by the P2Y1 receptor. P47 is strongly affected by the A3P5P, and this appears to be highly dependent on P2Y12. However, P20 phosphorylation occurs in the presence of A3P5P, suggesting that the P2Y12 receptor signal contributes to P20 phosphorylation mediated by a calcium-independent pathway. The results suggest that P2Y1 and P2Y12 receptors interact to modulate the phosphorylation of P20 and P47. 2). The inside-out signalling dependent on both P2Y12 and P2Y1 is necessary for GPIIb/IIIa activation. 3). Clopidogrel and SR121566 inhibited the increase in tyrosine phosphorylation induced by 2MesADP and concomitantly inhibited platelet aggregation, indicating that most of the phosphorylations are GPIIb/IIIa dependent. However, neither clopidogrel nor SR121566 inhibited the first wave of 80 kDa substrate (cortactin) which is involved in the reorganization of the cytoskeleton necessary for shape change and which appeared to be essentially P2Y1 dependent.