Abstract
As enzymes that mediate the attachment of long-chain fatty acids to cysteine residues, ZDHHC proteins have been reported to be promising therapeutic targets for treating cancer and autoimmune diseases. Yet, due to the lack of potent selective inhibitors, scrutiny of the biological functions of ZDHHCs has been limited. The main hindrance for developing ZDHHC inhibitors is the lack of a facile high-throughput assay. Here, we developed a ZDHHC3/7/20 high-throughput assay based on the acylation-coupled lipophilic induction of polarization (Acyl-cLIP) method and screened several potential ZDHHC inhibitors. Furthermore, we demonstrated that in vitro results from the Acyl-cLIP assay are supported by the results from cell-based assays. We envision that this new ZDHHC3/7/20 Acyl-cLIP assay will accelerate the high-throughput screening of large compound libraries for improved ZDHHC inhibitors and provide therapeutic benefits for cancer and autoimmune diseases.
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