cAMPS-Rp, triethylammonium salt

Names

[ Name ]:
cAMPS-Rp, triethylammonium salt

[Synonym ]:
MFCD03703495
cAMPS-Rp,triethylammonium salt

Biological Activity

[Description]:

Rp-cAMPS triethylammonium salt is an analog of cAMP which acts as a potent, competitive and cell-permeable antagonist of cAMP-induced activation of cAMP-dependent PKA I and II (Kis of 6.05 µM and 9.75 µM, respectively). Rp-cAMPS triethylammonium salt is resistant to hydrolysis by phosphodiesterases[1][2][3][4][5].

[Related Catalog]:

Signaling Pathways >> Protein Tyrosine Kinase/RTK >> PKA

Signaling Pathways >> Stem Cell/Wnt >> PKA

Research Areas >> Neurological Disease

[Target]

Ki: 6.05 µM (PKA I) and 9.75 µM (PKA II)[1]

[In Vitro]

A membrane-permeable competitive cAMP antagonist (Rp-cAMPS) that blocks PKA activation by binding to the regulatory subunits without dissociating the kinase holoenzyme also inhibits synaptic plasticity but has no effect on normal synaptic transmission[1].

[In Vivo]

Rp-cAMPS (10 μM, 15 min) decreases the monosynaptic EPSCs evoked at the PB-CeLC and BLA-CeLC synapses in slices from arthritic rats but not in control neurons from normal animals. The inhibitory effect of Rp-cAMPS is significant compared to predrug (ACSF) control values obtained in the same neurons[1].

[References]

[1]. Rothermel JD, et al. A mechanistic and kinetic analysis of the interactions of the diastereoisomers of adenosine 3',5'-(cyclic)phosphorothioate with purified cyclic AMP-dependent protein kinase. Biochem J. 1988 May 1;251(3):757-62.

[2]. Fu Y, et al. PKA and ERK, but not PKC, in the amygdala contribute to pain-related synaptic plasticity and behavior. Mol Pain. 2008 Jul 16;4:26.

[3]. Kuriyama S, et al. Isoproterenol inhibits rod outer segment phagocytosis by both cAMP-dependent and independent pathways. Invest Ophthalmol Vis Sci. 1995 Mar;36(3):730-6.

[4]. Dostmann WR, et al. Probing the cyclic nucleotide binding sites of cAMP-dependent protein kinases I and II with analogs of adenosine 3',5'-cyclic phosphorothioates. J Biol Chem. 1990 Jun 25;265(18):10484-91.

[5]. Van Haastert PJ, et al. Competitive cAMP antagonists for cAMP-receptor proteins. J Biol Chem. 1984 Aug 25;259(16):10020-4.