H-89 是一种有效、选择性的 cAMP 依赖性 prote

H-89

H-89 是一种有效、选择性的 cAMP 依赖性 protein kinase A 抑制剂，IC₅₀ 值为 48 nM，对 PKG，PKC，Casein Kinase 和其他激酶的抑制作用很弱。

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生物活性    
H-89 is a potent and selective inhibitor of cyclic AMP-dependent protein kinase (protein kinase A) with IC50 of 48 nM and has weak inhibition on PKG, PKC, Casein Kinase, and others kinases.

IC50 & Target    
IC50: 48 nM (protein kinase A)

体外研究(In Vitro)    
H-89 inhibits protein kinase A, in competitive fashion against ATP. H-89 causes a dose-dependent inhibition of the forskolin-induced protein phosphorylation, with no decrease in intracellular cyclic AMP levels in PC12D cells. H-89 significantly inhibits the forskolin-induced neurite outgrowth from PC12D cells. H-89 (30 μM) inhibits significantly cAMP-dependent histone IIb phosphorylation activity in PC12D cell lysates[1]. H-89 (1-2 μM) significantly slows the repriming rate in rat skinned fibres, most likely due to it deleteriously affecting the T-system potential. H-89 (10-100 μM) inhibits net Ca2+ uptake by the SR and affectes the Ca32-sensitivity of the contractile apparatus in rat skinned fibres[2].

体内研究(In Vivo)    
H-89 (0.2 mg/100g, i.p.) significantly increases seizure latency and threshold in PTZ-treated animals. H-89 (0.05, 0.2 mg/100 g, i.p.) prevents the epileptogenic activity of bucladesine (300 nM) with significant increase of seizure latency and seizure threshold[3].

分子量    
446.36

Formula    
C20H20BrN3O2S

CAS 号    
127243-85-0

运输条件    
Room temperature in continental US; may vary elsewhere.

储存方式    
Please store the product under the recommended conditions in the Certificate of Analysis.
 

参考文献

[1]. Chijiwa T, et al. Inhibition of forskolin-induced neurite outgrowth and protein phosphorylation by a newly synthesized selective inhibitor of cyclic AMP-dependent protein kinase, N-[2-(p-bromocinnamylamino)ethyl]-5-isoquinolinesulfonamide (H-89), of PC12D  [Content Brief] [2]. Blazev R, et al. Effects of the PKA inhibitor H-89 on excitation-contraction coupling in skinned and intact skeletal muscle fibres. J Muscle Res Cell Motil. 2001;22(3):277-86.  [Content Brief] [3]. Hosseini-Zare MS, et al. Effects of pentoxifylline and H-89 on epileptogenic activity of bucladesine in pentylenetetrazol-treated mice. Eur J Pharmacol. 2011 Nov 30;670(2-3):464-70.  [Content Brief]