ND646

ND-646 inhibits FASyn in vitro and induces apoptosis in NSCLC cells. AMPK phosphorylation sites can be used as a biomarker to monitor ACC engagement by ND-646.^[1]

All cell lines are incubated at 37 ℃ and are maintained in an atmosphere containing 5% CO2. A549, H460, H157 and H1355 cells are purchased from the ATCC. Cells are tested for Mycoplasma using manufacturer's conditions and are deemed negative. Cells are grown in Dulbecco's modified Eagles medium (DMEM) plus 10% fetal bovine serum. ACC1-KO clones are maintained in 10% FBS + addition of 200 μM palmitate every 3 days. For proliferation assays via cell counts, cells are plated into 24 well plates in triplicate at 2^E4 cells/well and the following day treated with either DMSO vehicle or ND-646. Cell counts are recorded at days 1, 3, 5 and 7-post treatment. For delipidated media, cells are first seeded in media containing regular 10% FBS and the following day are switched into media containing 20% delipidated FBS upon treatment. Viability assays are performed using either a WST-1 viability assay or Cyquant in 96 well culture plates under manufacturers conditions. For quantitation, values from treated cells are divided by values from control treated cells and expressed as percent control. Palmitate rescue experiments are performed in delipidated media by co-treating cells, in 24 well plates, with ND-646 and 200 μM of palmitate conjugated to BSA. For palmitate-BSA preparation, palmitate is solubilized in 100% Etoh @ 50 mM and combined with 4% fatty acid free BSA in saline at a ratio of 1:4 to make a palmitate concentration of 10 mM. Palmitate-BSA is used at a final concentration of 200 μM.

Chronic ND-646 treatment of xenograft and genetically engineered mouse models of NSCLC inhibits tumor growth. When administered as a single agent or in combination with the standard-of-care drug, ND-646 markedly suppresses lung tumor growth in the Kras;Trp53−/− (also known as KRAS p53) and Kras;Stk11−/− (also known as KRAS Lkb1) mouse models of NSCLC.^[1]