CC260 is a selective PI5P4Kα and PI5P4Kβ inhibitor with Kis of 40 nM and 30 nM, respectively. CC260 does not inhibit or weakly inhibits other protein kinases, such as Plk1 and RSK2. CC260 can be used for cell energy metabolism, diabetes and cancer research[1]. In cultured C2C12 myotubes, CC260 (20 μM) enhances Insulin-induced Akt phosphorylation at both Thr-308 and Ser-473 but suppresses S6K phosphorylation (Thr-389) by mTORC1[1]. CC260 (2.5 μM, 5 μM, 10 μM, 20 μM) significantly increases phosphorylation of acetyl-CoA carboxylase (ACC) in a dose-dependent manner[1]. CC260 treatment reduces the ability of BT474 cells to survive serum starvation, which could be rescued by expressing the PI5P4Kβ refractory mutant[1]. In BT474 cells, CC260 treatment causes an increase in glycolytic ATP production[1]. [1]. Song Chen, et al. Pharmacological inhibition of PI5P4Kα β disrupts cell energy metabolism and selectively kills p53- tumor cells. Proc Natl Acad Sci U S A. 2021 May 25;118(21):e2002486118.
SNJ-1945 is a calpain inhibitor with more favorable retinal penetration, high oral bioavailability, and long half-life. SNJ1945 rescued defective function in lissencephaly. SNJ-1945 protects SH-SY5Y cells against MPP(+) and rotenone. SNJ-1945 reduces murine retinal cell death in vitro and in vivo. SNJ-1945 has good aqueous solubility, can prevents the heart from KCl arrest-reperfusion injury associated with the impairment of total Ca(2+) handling by inhibiting the proteolysis of alpha-fodrin as a cardioplegia.