Molecular diversity of phenothiazines: design and synthesis of phenothiazine-dithiocarbamate hybrids as potential cell cycle blockers

Mol Divers. 2017 Nov;21(4):933-942. doi: 10.1007/s11030-017-9773-4. Epub 2017 Aug 7.

Abstract

Novel phenothiazine-dithiocarbamate analogues were designed by molecular hybridization strategy and synthesized and evaluated for their anticancer activity in vitro against three selected cancer cell lines (EC-109, MGC-803, and PC-3). The preliminary structure-activity relationship (SAR) for this phenothiazine-dithiocarbamate hybrids is explored. Among all analogues, 2-oxo-2-(10H-phenothiazin-10-yl)ethyl 4-ethylpiperazine-1-carbodithioate (8a) showed the most potent inhibitory activity with an [Formula: see text] value of [Formula: see text] against PC-3 cells. In addition, compound 8a could arrest the cell cycle at the G1 phase and regulate the expression of G1 checkpoint-related proteins, suggesting that phenothiazine-dithiocarbamate hybrids might be useful as cell cycle blockers.

Keywords: Antiproliferative activity; Dithiocarbamate; G1 checkpoint-related protein; G1 phase; Phenothiazine.

MeSH terms

  • Antineoplastic Agents / chemical synthesis*
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / pharmacology*
  • Apoptosis / drug effects
  • Cell Cycle Checkpoints / drug effects*
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Chemistry Techniques, Synthetic
  • Drug Design*
  • Drug Screening Assays, Antitumor
  • Humans
  • Phenothiazines / chemical synthesis*
  • Phenothiazines / chemistry
  • Phenothiazines / pharmacology*
  • Structure-Activity Relationship

Substances

  • Antineoplastic Agents
  • Phenothiazines