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The Isoflavanoid (+)-PTC Regulates Cell-Cycle Progression and Mitotic Spindle Assembly in a Prostate Cancer Cell Line

Kaio Moraes de Farias1,2, Rafaela Rosa-Ribeiro3, Edmarcia E Souza4

  • 1Programa de Pós-Graduação em Biotecnologia - RENORBIO - Rede Nordeste de Biotecnologia, Federal University of Ceará - UFC, 60020-181, Fortaleza, CE, Brazil.

Chemistry & Biodiversity
|April 1, 2022
PubMed

Insights

(+)-2,3,9-trimethoxypterocarpan [(+)-PTC] shows anti-proliferative effects on prostate cancer cells. This compound halts mitosis and disrupts cell division, suggesting potential for treating androgen-insensitive prostate cancer.

Area of Science:

  • Oncology
  • Cell Biology
  • Pharmacology

Background:

  • Prostate cancer is a leading malignancy in men, with advanced, androgen-independent forms posing significant therapeutic challenges.
  • Developing novel treatment strategies for resistant prostate cancer is crucial.

Purpose of the Study:

  • To evaluate the anti-proliferative effects of (+)-2,3,9-trimethoxypterocarpan [(+)-PTC] on human prostate cancer cells.
  • To investigate the compound's impact on cell-cycle progression and mitosis.
  • To explore (+)-PTC as a potential therapeutic agent for androgen-insensitive prostate cancer.

Main Methods:

  • Flow cytometry was employed to assess cell-cycle progression.
  • Confocal microscopy and image analysis were utilized to examine mitotic events and cellular structures.
  • Studies were conducted on relevant human prostate cancer cell lines, specifically PC-3.

Main Results:

  • (+)-PTC demonstrated significant anti-proliferative activity against PC-3 prostate cancer cells.
  • Mitosis was arrested in the prophase or prometaphase stages.
  • Observed effects included the formation of monopolar spindles, centrosome disorganization, and disrupted γ-tubulin distribution, while centriole replication was unaffected.

Conclusions:

  • (+)-PTC effectively regulates cell-cycle progression and disrupts mitosis in prostate cancer cells.
  • The observed cellular effects suggest (+)-PTC holds promise as a potential therapeutic candidate.
  • Further consideration of (+)-PTC for treating androgen-insensitive or independent prostate cancer is warranted.
Keywords:
PC-3Pterocarpananticancer activityantimitotic drugmicrotubule formation

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