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CCT020312 is capable of delivering potent, and eukaryotic initiation factor 2-alpha kinase 3 (EIF2AK3) selective, proliferation control and also is an activator of RNA-like endoplasmic reticulum kinase (PERK).

Treatment of HT29 cells with CCT020312 for 24 hours reveal a concentration-dependent loss of P-S608-pRB signal, with a linear response between 1.8 and 6.1 μM. CCT020312 treatment effectively inhibits cell proliferation (as measured at 96 hours) even if treatment is for 2 hours only with subsequent compound washout, indicating that CCT020312 is capable of eliciting durable rather than transient cytostasis. Treatment of HT29 cells with 10 μM CCT020312 for 24 hours reduce the amount of the G1/S cyclins D1, D2, E and A as well as the CDK catalytic subunit CDK2 and increased the level of the CDK inhibitor p27KIP1 present in such cells[1].

Treatment of mice with the PERK activator CCT020312 leads to increased levels of phosphorylated PERK and NRF2 in brain homogenates[2].

[1]. Stockwell SR, et al.Mechanism-based screen for G1/S checkpoint activators identifies a selective activator of EIF2AK3/PERK signalling. PLoS One. 2012;7(1):e28568. [2]. Bruch J, et al. PERK activation mitigates tau pathology in vitro and in vivo. EMBO Mol Med. 2017 Mar;9(3):371-384.

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