NMS-873 leads to dysfunctional glycometabolism in a p97-independent manner

ABSTRACT: ATP-competitive p97 inhibitor CB-5339, the successor of CB-5083, is being evaluated in Phase 1 clinical trials for anti-cancer therapy. Different modes of action p97 inhibitors such as allosteric inhibitors are useful to overcome one the major problems of targeted therapy: drug-induced resistance. We previously demonstrated allosteric p97 inhibitor NMS-873 can overcome CB-5083-induced resistance. Here, we found that NMS-873 but not CB-5083 affected glycometabolism. By establishing NMS-873-resistant cell lines and performing both cell-based and proteomic analysis, we confirmed that NMS-873 dysregulates glycometabolism in a p97-independent manner. We then used proteome integral solubility alteration with a temperature-based method (PISA T) to identify NDUFAF5 as one of the potential targets of NMS-873 in the mitochondrial complex I. Overall, we employed chemical proteomics and drug-induced thermal proteome changes to identify drug targets, in combination with drug-resistant cell lines to dissect on- and off-target effects. We also demonstrated that glycolysis inhibitor 2-DG enhanced the anti-proliferative effect of NMS-873. The polypharmacology of NMS-873 can be advantageous for anti-cancer therapy.

INSTRUMENT(S): Orbitrap Eclipse

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Permanent Cell Line Cell, Cell Culture

DISEASE(S): Colon Cancer

SUBMITTER: Shan Li  

LAB HEAD: Tsui-Fen Chou

PROVIDER: PXD025898 | Pride | 2022-05-19

REPOSITORIES: Pride