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Synthesis and structure-activity relationship studies of parthenolide derivatives as potential anti-triple negative

Weizhi Ge1, Xin Hao1, Fangzhi Han1

  • 1State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin, 300353, People's Republic of China.

European Journal of Medicinal Chemistry
|February 12, 2019
PubMed

Insights

Researchers developed new parthenolide derivatives to combat triple-negative breast cancer (TNBC). Compound 7d shows significant potential as an anti-TNBC agent, demonstrating potent activity and inducing cancer cell death.

Area of Science:

  • Medicinal Chemistry
  • Oncology
  • Molecular Biology

Background:

  • Triple-negative breast cancer (TNBC) is an aggressive subtype with high recurrence and drug resistance.
  • Current treatments for TNBC lack specific therapeutic agents, necessitating novel drug discovery.
  • Parthenolide derivatives are being explored for their potential anticancer properties.

Purpose of the Study:

  • To design, synthesize, and evaluate novel parthenolide derivatives for anti-TNBC activity.
  • To identify potent compounds with improved efficacy compared to the parent compound and existing drugs.
  • To elucidate the mechanism of action of promising derivatives in TNBC cells.

Main Methods:

  • Synthesis of a library of seventy parthenolide derivatives.
  • In vitro evaluation of anti-TNBC activity using IC50 values against various breast cancer cell lines.
  • Comparison of compound activity against the parent compound (parthenolide) and a positive control (ADR).
  • Investigation of apoptosis induction via the mitochondrial pathway and cell cycle arrest (G1 phase) in SUM-159 cells.

Main Results:

  • Compound 7d displayed the most potent activity, with IC50 values from 0.20 to 0.27 μM.
  • Compound 7d showed 11.6- to 18.6-fold improvement over parthenolide (IC50: 2.68-4.63 μM).
  • Compound 7d exhibited greater potency than the positive control drug ADR.
  • Compound 7d induced apoptosis in SUM-159 cells through the mitochondrial pathway and caused G1 phase arrest.

Conclusions:

  • Compound 7d is a highly promising lead compound for the development of novel anti-TNBC therapeutics.
  • The identified derivatives warrant further investigation for their potential in treating triple-negative breast cancer.
  • The mechanism involving mitochondrial apoptosis and G1 phase arrest provides insight into 7d's anti-cancer effects.
Keywords:
ApoptosisCell cycleParthenolideStructure-activity relationshipTriple negative breast cancer

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