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The Synthetic Curcumin Analog HO-3867 Rescues Suppression of PLAC1 Expression in Ovarian Cancer Cells
Journal article   Open access   Peer reviewed

The Synthetic Curcumin Analog HO-3867 Rescues Suppression of PLAC1 Expression in Ovarian Cancer Cells

Eric J. Devor, Brandon M. Schickling, Jace R. Lapierre, David P. Bender, Jesus Gonzalez-Bosquet and Kimberly K. Leslie
Pharmaceuticals (Basel, Switzerland), Vol.14(9), p.942
09/01/2021
DOI: 10.3390/ph14090942
PMCID: PMC8465575
PMID: 34577642
url
https://doi.org/10.3390/ph14090942View
Published (Version of record) Open Access

Abstract

Elevated expression of placenta-specific protein 1 (PLAC1) is associated with the increased proliferation and invasiveness of a variety of human cancers, including ovarian cancer. Recent studies have shown that the tumor suppressor p53 directly suppresses PLAC1 transcription. However, mutations in p53 lead to the loss of PLAC1 transcriptional suppression. Small molecules that structurally convert mutant p53 proteins to wild-type conformations are emerging. Our objective was to determine whether the restoration of the wild-type function of mutated p53 could rescue PLAC1 transcriptional suppression in tumors harboring certain TP53 mutations. Ovarian cancer cells OVCAR3 and ES-2, both harboring TP53 missense mutations, were treated with the p53 reactivator HO-3867. Treatment with HO-3867 successfully rescued PLAC1 transcriptional suppression. In addition, cell proliferation was inhibited and cell death through apoptosis was increased in both cell lines. We conclude that the use of HO-3867 as an adjuvant to conventional therapeutics in ovarian cancers harboring TP53 missense mutations could improve patient outcomes. Validation of this conclusion must, however, come from an appropriately designed clinical trial.
Chemistry, Medicinal Life Sciences & Biomedicine Pharmacology & Pharmacy Science & Technology

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