proto 1

PROTO-1 displays obviously protection of hair cells, with HC50(concentration that would produce 50% hair cell survival) of 1 μM-10 μM (1 μM≤HC50≤10 μM).

Cbl-b-IN-3 is a potent proto-oncogene-B (CPL-B) inhibitor of casitas B-series lymphoma (ic50 < 1 nM). Cpl-b, a cyclic E3 ubiquitin protein ligase, is involved in the setting of T lymphocyte activation thresholds. Cpl-b negatively regulates p85 in an independent proteolytic manner, and participates in the recruitment of p85 to CD28 and T cell antigen receptor ζ through its E3 ubiquitin ligase activity. Inhibition of PI3K inhibits the enhancement of Cblb- -T cell activation.

RGB-1, a small molecule that selectively stabilizes the RNA G-quadruplex structure, enhances G-quadruplex-mediated inhibition of RNA translation in mammalian cells and reduces NRAS proto-oncogene expression in breast cancer cells.