DC70728 |
RA608
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RA608 (RA-608) is a potent, selective, ATP-competitive, orally available CaMKII inhibitor, inhibits human CaMKIIδ, CaMKIIγ, CaMKIIα, and CaMKIIβ with IC50 of 22, 51, 121, and 1135 nM, respectively.RA608 displays a good selectivity profile against a broad panel of 304 human recombinant kinases.RA608 significantly reduces SR Ca leak in human atrial cardiomyocytes, reduces diastolic tension of human atrial trabeculae, does not affect action potential characteristics; attenuates heart failure in the murine HF model induced by TAC. |
DC70209 |
AS105
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AS105 (AS-105) is a highly potent, ATP-competitive CaMKII inhibitor, inhibits CaMKIIδ with IC50 of 8 nM, Ki of 3 nM.
AS105 is also effective against autophosphorylated CaMKII (in contrast to the commonly used allosteric CaMKII-inhibitor KN-93).
In isolated atrial cardiomyocytes from human donors and ventricular myocytes from CaMKIIδC-overexpressing mice with heart failure, AS105 effectively reduced diastolic SR Ca2+ leak by 38% to 65% as measured by Ca2+-sparks or tetracaine-sensitive shift in [Ca2+]i.
AS105 effectively reduced SR Ca2+-leak, thus improving SR Ca2+-accumulation and reducing cellular arrhythmogenic correlates, without negatively influencing excitation-contraction coupling. |