Bioimpacts. 2020;10(1): 27-36.
doi: 10.15171/bi.2020.04
PMID: 31988854
PMCID: PMC6977588
Scopus ID: 85078959970
  Abstract View: 435
  PDF Download: 242
  Full Text View: 138

Original Research

PEGylated gold nanoparticles-ribonuclease induced oxidative stress and apoptosis in colorectal cancer cells

Mostafa Akbarzadeh Khiavi 1,2 ORCID logo, Azam Safary 2,3 ORCID logo, Jaleh Barar 2,4 ORCID logo, Hamed Farzi-Khajeh 5, Abolfazl Barzegari 2, Rahimeh Mousavi 2, Mohammad Hossein Somi 1 * ORCID logo, Yadollah Omidi 2,4 * ORCID logo

1 Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
2 Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, 51656-65811, Iran
3 Connective Tissue Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
4 Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
5 Organosilicon Research Laboratory, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
*Corresponding author: Mohammad Hossein Somi, Email: mhosseinsina@yahoo.com


Introduction: Currently, drug-induced reactive oxygen species (ROS) mediating apoptosis pathway have extensively been investigated in designing effective strategies for colorectal cancer (CRC) chemotherapy. Bovine pancreatic ribonuclease A (RNase A) represents a new class of cytotoxic and non-mutagenic enzymes, and has gained more attention as a potential anticancer modality; however, the cytosolic ribonuclease inhibitors (RIs) restrict the clinical application of this enzyme. Nowadays, nanotechnology-based diagnostic and therapeutic systems have provided potential solutions for cancer treatments.
Methods: In this study, the gold nanoparticles (AuNPs) were synthesized, stabilized by polyethylene glycol (PEG), functionalized, and covalently conjugated with RNase A. The physicochemical properties of engineered nanobiomedicine (AuNPs-PEG-RNase A) were characterized by scanning electron microscope (SEM), dynamic light scattering (DLS), and UV-vis spectrum. Then, its biological impacts including cell viability, apoptosis, and ROS production were evaluated in the SW-480 cells.
Results: The engineered nanobiomedicine, AuNPs-PEG-RNase A, was found to effectively induce apoptosis in SW-480 cells and result in a significant reduction in cancer cell viability. Besides, the maximum production of ROS was obtained after the treatment of cells with an IC50 dose of AuNPs-PEG-RNase A.
Conclusion: Based on the efficient ROS-responsiveness and the anticancer activity of RNase A of the engineered nanomedicine, this nanoscaled biologics may be considered as a potential candidate for the treatment of CRC.
Keywords: Bovine pancreatic ribonuclease, Colorectal cancer, Gold nanoparticles, Nanomedicine, PEGylation, Reactive oxygen species
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Submitted: 28 May 2019
Revision: 30 Jun 2019
Accepted: 08 Jul 2019
ePublished: 25 Jul 2019
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