NCT-58

• CAT Number: I045183
• CAS Number: 2411429-33-7
• Molecular Formula: C27H34N2O5
• Molecular Weight: 466.57
• Purity: ≥95%
• Synonyms: 5-methoxy-N-[3-methoxy-4-(2-piperidin-2-ylethoxy)phenyl]-2,2-dimethylchromene-6-carboxamide
• InChI: InChI=1S/C27H34N2O5/c1-27(2)14-12-20-22(34-27)11-9-21(25(20)32-4)26(30)29-19-8-10-23(24(17-19)31-3)33-16-13-18-7-5-6-15-28-18/h8-12,14,17-18,28H,5-7,13,15-16H2,1-4H3,(H,29,30)
• InChIKey: QGEKYFVMAGLOKW-UHFFFAOYSA-N
• SMILES: CC1(C=CC2=C(O1)C=CC(=C2OC)C(=O)NC3=CC(=C(C=C3)OCCC4CCCCN4)OC)C

NCT-58 is a potent inhibitor of C-terminal HSP90. NCT-58 does not induce the heat shock response (HSR) due to its targeting of the C-terminal region and elicits anti-tumor activity via the simultaneous downregulation of HER family members as well as inhibition of Akt phosphorylation. NCT-58 kills Trastuzumab-resistant breast cancer stem-like cells. NCT-58 induces apoptosis in HER2-positive breast cancer cells[1].
NCT-58 treatment (0.1-20 μM; 72 hours) dose-dependently reduces cell viability in HER2-positive BT474 and SKBR3 cells[1].
NCT-58 treatment (0.1-10 μM; 72 hours) increases the number of early and late apoptotic cells in HER2-positive BT474 and SKBR3 cells[1].
NCT-58 treatment (2-10 μM; 72 hours) effectively reduced the levels of truncated p95HER2 and its phosphorylated form, as well as downregulation of Akt and phospho-Akt (Ser473) protein contents in JIMT-1 and MDA-MB-453 cells[1].
NCT-58 (30 mg/kg; i.p.; every other day for 47 days) suppresses Trastuzumab-resistant tumor growth[1].
NCT-58 (30 mg/kg; i.p.; every other day for 47 days) causes a significant impediment of tumor growth and a marked decrease in tumor weight[1].

Reference

[1]. Park S, et al. The C-terminal HSP90 inhibitor NCT-58 kills trastuzumab-resistant breast cancer stem-like cells. Cell Death Discov. 2021;7(1):354.
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