Synthesis, DNA interaction, in vitro/in silico topoisomerase II inhibition and photodynamic therapy activities of two cationic BODIPY derivatives


Barut B. , COBAN O. , YALÇIN C. Ö. , Bas H., SARI S., Biyiklioglu Z. , ...More

DYES AND PIGMENTS, vol.174, 2020 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 174
  • Publication Date: 2020
  • Doi Number: 10.1016/j.dyepig.2019.108072
  • Title of Journal : DYES AND PIGMENTS
  • Keywords: Synthesis, BODIPY, Colorectal, Molecular docking, Topoisomerase, Nanoparticle, COMBINATION THERAPY, PHTHALOCYANINES, NANOPARTICLES, LIPOSOMES, ZINC(II), BINDING

Abstract

A new series of BODIPY 3 and 6 with two dimethylamino and diethylamino moieties at their 3,5-positions were prepared via Knoevenagel condensation of BODIPY 2 and 5 with 3,4-bis{3-[3-(dimethylamino)phenoxy]propoxy}benzaldehyde and 4-{3-[3-(dimethylamino)phenoxy]propoxy}benzaldehyde. Water soluble BODIPY-3a and BODIPY-6a were synthesized by treating BODIPY 3 and 6 with an excess of CH3-I in DMF. Singlet oxygen quantum yields, DNA binding and cleavage, topoisomerase II inhibition and photodynamic therapy activities of two cationic BODIPY derivatives (BODIPY-3a and BODIPY-6a) were examined utilizing different methods. The singlet oxygen quantum yield values of compounds were found to be 0.07 and 0.13 in TBS. BODIPY-3a and BODIPY-6a interacted with CT-DNA with K-b values of 5.18 +/-(0.15) x 10(3) and 2.88 +/-(0.05) x 10(3) M-1, respectively. The agarose gel electrophoresis experiments indicated that BODIPY-3a and BODIPY-6a had marked photocleavage activities on supercoiled plasmid DNA. The topoisomerase II inhibition studies showed that BODIPY-6a had higher inhibitory effect than BODIPY-3a, which was in line with the theoretical DNA-topoisomerase complex binding studies via molecular docking method. Based on MTT assay results, the IC50 values of BODIPY-3a and BODIPY-6a ranged from > 100 mu M to 27.20 mu M for 24, 48 and 72 h without and with light irradiation. Finally, LpBODIPY-6a and NpBODIPY-6a were prepared and their cytotoxic and phototoxic properties were determined using MTT assay. The IC50 values of LpBODIPY-6a were found > 100 mu M and 33.63 mu M, while the IC50 values of NpBODIPY-6a were 26.01 mu M and 5.66 mu M without/with irradiation. The presented studies suggested that nanoparticle formulation was found the most promising delivery vehicle for BODIPY-6a.