NCIt definition : The sodium salt of gold thiomalic acid, an organogold compound with antirheumatic
and potential antineoplastic activities. Gold sodium thiomalate (GST) appears to inhibit
the activity of atypical protein kinase C iota (PKCiota) by forming a cysteinyl-aurothiomalate
adduct with the cysteine residue Cys-69 within the PB1 binding domain of PKCiota.
This prevents the binding of Par6 (Partitioning defective protein 6) to PKCiota, thereby
inhibiting PKCiota-mediated oncogenic signaling, which may result in the inhibition
of tumor cell proliferation, the promotion of tumor cell differentiation, and the
induction of tumor cell apoptosis. Atypical PKCiota, a serine/threonine kinase overexpressed
in numerous cancer cell types, plays an important role in cancer proliferation, invasion,
and survival; Par6 is a scaffold protein that facilitates atypical PKC-mediated phosphorylation
of cytoplasmic proteins involved in epithelial and neuronal cell polarization.;
UNII : E4768ZY6GM;
CAS number : 12244-57-4; a href https://gsrs.ncats.nih.gov/ginas/app/beta/browse-substance?search 12244-57-4
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