Small molecule compound ZYZ-384 targets SMYD3 to alleviate aging.

SMYD3 is a chromatin modifier that facilitates the trimethylation of histone 3 lysine 4 (H3K4) to induce diverse biological activities. We have provided a brief demonstration of the anti-aging effect of ZYZ-384, a newly developed inhibitor targeting SMYD3. In order to validate the anti-senescence effect of ZYZ-384, we utilized angiotensin II to induce senescence in two types of human endothelial cells (HMEC-1) and mouse endothelial cells (SVEC4-10), creating cellular models for senescence. Additionally, we employed D-galactose-induced subacute senescence animal models as well as natural senescence animal models. At the cellular level, we assessed proliferation capacity and intracellular markers associated with aging. Aging markers, SASP and differential metabolites were evaluated at an organismal level using animal models. Compared to senescent cells or animals, ZYZ-384 application significantly inhibited levels of aging markers in both senescent cell and senescent animal models while promoting cell proliferation. Furthermore, it suppressed expression of SMYD3 and H3K4me3 along with over expression of HSP 90 and NF-κB. Our study demonstrates that ZYZ-384 is an effective inhibitor targeting SMYD3 which can effectively delay aging.