Design, synthesis and biological evaluation of novel tetrahydroisoquinoline derivatives as P-glycoprotein-mediated multidrug resistance inhibitors

Bioorg Med Chem. 2018 May 15;26(9):2420-2427. doi: 10.1016/j.bmc.2018.03.045. Epub 2018 Apr 3.

Abstract

Multidrug resistance (MDR) is one of the main obstacles of clinical chemotherapy. A great deal of research shows that the occurrence of drug resistance in various malignant tumors is closely related to the expression of P-glycoprotein (P-gp) on the surface of the cell membrane. In this paper, based on the structure-activity relationship of phenylethyl tetrahydroisoquinoline, we choose tariquidar as the lead compound for the design and synthesis of 17 novel tetrahydroisoquinoline P-gp inhibitors. Additionally, in vitro and in vivo cytotoxicity assays and reversed MDR activity assays were evaluated. Among them, compound 3 had a good reversal of MDR activity and the reversal mechanism study of it was carried out. All of these results demonstrated that compound 3 was considered to be a promising P-gp-mediated MDR reversal candidate.

Keywords: Cancer; Multidrug resistance; P-glycoprotein; Reversal agents.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • ATP Binding Cassette Transporter, Subfamily B, Member 1 / antagonists & inhibitors*
  • ATP Binding Cassette Transporter, Subfamily B, Member 1 / chemistry
  • Binding Sites
  • Cell Survival / drug effects
  • Doxorubicin / pharmacology
  • Drug Resistance, Neoplasm / drug effects*
  • Fluorescent Dyes / metabolism
  • Fluorescent Dyes / pharmacology
  • Humans
  • Isoquinolines / chemical synthesis
  • Isoquinolines / chemistry
  • Isoquinolines / pharmacology*
  • Isoquinolines / toxicity
  • K562 Cells
  • Molecular Docking Simulation
  • Quinolines / chemistry
  • Quinolines / pharmacology
  • Rhodamine 123 / metabolism
  • Rhodamine 123 / pharmacology
  • Structure-Activity Relationship

Substances

  • ATP Binding Cassette Transporter, Subfamily B, Member 1
  • Fluorescent Dyes
  • Isoquinolines
  • Quinolines
  • Rhodamine 123
  • Doxorubicin
  • tariquidar