Folic acid-conjugated 4-amino-phenylboronate, a boron-containing compound designed for boron neutron capture therapy, is an unexpected agonist for human neutrophils and platelets

Chem Biol Drug Des. 2014 May;83(5):532-40. doi: 10.1111/cbdd.12264. Epub 2014 Mar 18.

Abstract

Boron neutron capture therapy (BNCT) is an anticancer treatment based on the accumulation in the tumor cells of (10) B-containing molecules and subsequent irradiation with low-energy neutrons, which bring about the decay of (10) B to very toxic (7) Li(3+) and (4) He(2+) ions. The effectiveness of BNCT is limited by the low delivery and accumulation of the used (10) B-containing compounds. Here, we report the development of folic acid-conjugated 4-amino-phenylboronate as a novel possible compound for the selective delivery of (10) B in BNCT. An extensive analysis about its biocompatibility to mature blood cells and platelet progenitors revealed that the compound markedly supports platelet aggregation, neutrophil oxidative burst, and inhibition of megakaryocyte development, while it does not have any manifest effect on red blood cells.

Keywords: biocompatibility; blood cells; boron neutron capture therapy; erythrocytes; granulocytes; inflammation; megakaryocytes; platelets; thrombosis; toxicology.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Blood Platelets / cytology
  • Blood Platelets / drug effects
  • Boron Neutron Capture Therapy
  • Boronic Acids / chemical synthesis
  • Boronic Acids / chemistry*
  • Boronic Acids / pharmacology
  • Cell Differentiation / drug effects
  • Folic Acid / chemistry*
  • Humans
  • Megakaryocytes / cytology
  • Neutrophils / drug effects*
  • Platelet Aggregation / drug effects

Substances

  • Boronic Acids
  • Folic Acid
  • benzeneboronic acid