Targeting Antioxidant Pathways with Ferrocenylated N-Heterocyclic Carbene Supported Gold(I) Complexes in A549 Lung Cancer Cells.

نویسندگان

  • J F Arambula
  • R McCall
  • K J Sidoran
  • D Magda
  • N A Mitchell
  • C W Bielawski
  • V M Lynch
  • J L Sessler
  • K Arumugam
چکیده

Ferrocene containing N-heterocyclic carbene (NHC) ligated gold(I) complexes of the type [Au(NHC)2]+ were prepared and found to be capable of regulating the formation of reactive oxygen species (ROS) via multiple mechanisms. Single crystal X-ray analysis of bis(1-(ferrocenylmethyl)-3-mesitylimidazol-2-ylidene)-gold(I) chloride (5) and bis(1,3-di(ferrocenylmethyl)imidazol-2-ylidene)-gold(I) chloride (6) revealed a quasi-liner geometry around the gold(I) centers, (i.e., the C-Au-C bond angle were measured to be ~177° and all the Au-Ccarbene bonds distances were in the range of 2.00 (7) - 2.03 (1) Å). A series of cell studies indicated that cell proliferation inhibition and ROS generation were directly proportional to amount of ferrocene contained within the [Au(NHC)2]+ complexes (IC50 of 6 < 5 < bis(1-benzyl-3-mesitylimidazol-2-ylidene)-gold(I) chloride (4)). Complexes 4-6 were also confirmed to inhibit thioredoxin reductase as inferred from lipoate reduction assays and increase chelatable intracellular zinc concentrations. RNA microarray gene expression assays revealed that 6 induces endoplasmic reticulum stress response pathways as a result of ROS increase.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Evaluation of antioxidant and anti-cancer properties of curcumin / beta- and gamma-cyclodextrin complexes modified with chitosan nanoparticles on lung cancer cell A549

The aim of this study was to investigate the interaction modification of curcumin complex molecule (CUR) in beta- and gamma-cyclodextrin (β-CD and γ-CD) carriers with chitosan (CS) nanoparticles for targeted drug delivery and to compare their performance. The targeted drug delivery system includes the therapeutic agent of the CS nanoparticles targeting section of the same drug and the CD carrie...

متن کامل

Cytotoxicity of Pyrazine-Based Cyclometalated (C^Npz^C)Au(III) Carbene Complexes: Impact of the Nature of the Ancillary Ligand on the Biological Properties

The synthesis of a series of cyclometalated gold(III) complexes supported by pyrazine-based (C^N^C)-type pincer ligands is reported, including the crystal structure of a cationic example. The compounds provide a new platform for the study of antiproliferative properties of gold(III) complexes. Seven complexes were tested: the neutral series (C^Npz^C)AuX [X = Cl (1), 6-thioguanine (4), C≡CPh (5)...

متن کامل

Detailed analysis of pro-apoptotic signaling and metabolic adaptation triggered by a N-heterocyclic carbene-gold(I) complex.

Due to their broad spectrum of biological activity and antiproliferative effect on different human cancer cell lines, gold compounds have been in the focus of drug research for many years. Gold(I)-N-heterocyclic carbene complexes are of particular interest, because of their stability, ease of derivatization and clear cytotoxicity in cancer cells. To obtain a more detailed view of the molecular ...

متن کامل

Cyclometalated gold(III) complexes with N-heterocyclic carbene ligands as topoisomerase I poisons.

A panel of stable [Au(R-C--N--C)(N-heterocyclic carbene)](+) complexes displays prominent in vitro anticancer properties; [Au(C--N--C)(IMe)]CF(3)SO(3) (1, IMe = 1,3-dimethylimidazol-2-ylidene) significantly poisons topoisomerase I in vitro and suppresses tumor growth in nude mice model.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Chemical science

دوره 7 2  شماره 

صفحات  -

تاریخ انتشار 2016