Anticancer and biological properties of new axially disubstituted silicon phthalocyanines

Farajzadeh N., KUŞÇULU N., Yenilmez H. Y., BAHAR D., Bayır Z.

DALTON TRANSACTIONS, vol.51, pp.7539-7550, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 51
  • Publication Date: 2022
  • Doi Number: 10.1039/d2dt01033j
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aquatic Science & Fisheries Abstracts (ASFA), Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, EMBASE, MEDLINE
  • Page Numbers: pp.7539-7550
  • Istanbul Technical University Affiliated: Yes


This study reports the synthesis of three novel axially disubstituted silicon phthalocyanines (1-3-Si) and their quaternized phthalocyanines (1-3-QSi). The resulting compounds were characterized by applying spectroscopic techniques including H-1 NMR, FT-IR, UV-vis, and mass spectroscopy. The biological properties of compounds 1-3-QSi, including DNA cleavage activities, DNA binding modes, and topoisomerase enzyme inhibition activities, were investigated using agarose gel electrophoresis. pBR322 plasmid DNA, CT-DNA, and AL-DNA (isolated from apricot leaf) were used for DNA studies. All the quaternized compounds exhibited acceptable DNA cleavage activities. Human topoisomerase I and E. coli topoisomerase enzymes were used for the topoisomerase I inhibition studies. All the quaternized complexes inhibited topoisomerase I activity. Moreover, these compounds were screened for cytotoxic and apoptotic effects against a human colon cancer cell line (DLD-1) by performing MTT and Annexin V assays. They exhibited toxicity and apoptotic effect on the DLD-1 cell line. The findings reveal that the compounds can be utilized for cancer therapy after further investigations.