ROS-Mediated Therapeutic Approaches for Cells

A special issue of Cells (ISSN 2073-4409).

Deadline for manuscript submissions: closed (31 August 2021) | Viewed by 3342

Special Issue Editor

Special Issue Information

Dear Colleagues,

Reactive oxygen species (ROS), in a chemically reactive state, are peroxides, superoxide, hydroxyl radical, singlet oxygen and alpha-oxygen, etc. They have been extensively investigated in the field of cellular metabolism, cell therapy, cancer cell treatment and molecular targeting. Especially, ROS are known to have deep relationship with various kinds of disease, i.e., they are involved in pathogenesis, progression of symptoms and cell death. ROS can be acted as a double-edged sword, i.e., they involved in proliferation, migration and metabolism of cells even though they are by-products of cellular oxygen metabolism. Consequently, ROS generation in normal cells, stem cells and/or various disease cells can be applied as a target for therapeutic purposes. For example, ROS overproduction and imbalance of homeostasis in cancer cells induces apoptosis and/or necrosis, and then death of cancer cells. Then, many scientists have been tried to invent molecular targets and/or chemical agents for ROS production of cancer cells. Otherwise, some of them investigated ideal conditions for proliferation or induction of normal cells, stem cells and therapeutic cells. ROS generation and therapeutic approaches should be still explored for overcoming of various diseases.

Some of the topics around ROS generation in the cells and their therapeutic approaches to be tackled in this Special Issue include but are not limited to:

- Cellular mechanism of ROS production;

- ROS-producing agents and their cellular responses;

- ROS-related cell therapy;

- ROS-mediated cancer cell treatment;

- Disease diagnosis using ROS-sensitive mechanism.

Dr. Young-IL Jeong
Guest Editor

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Keywords

  • Cellular reactive oxygen species (ROS) metabolism
  • Cellular oxidative stress
  • ROS-mediated cell therapy
  • ROS-related immunological responses
  • ROS-producing chemical agents
  • Therapeutic approaches of various disease cells using ROS
  • Disease diagnosis using ROS-related mechanism

Published Papers (1 paper)

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Research

22 pages, 6884 KiB  
Article
Redox-Sensitive and Folate-Receptor-Mediated Targeting of Cervical Cancer Cells for Photodynamic Therapy Using Nanophotosensitizers Composed of Chlorin e6-Conjugated β-Cyclodextrin via Diselenide Linkage
by Howard Kim, Mi Woon Kim, Young-IL Jeong and Hoe Saeng Yang
Cells 2021, 10(9), 2190; https://doi.org/10.3390/cells10092190 - 25 Aug 2021
Cited by 10 | Viewed by 2739
Abstract
The aim of this study was to fabricate a reactive oxygen species (ROS)-sensitive and folate-receptor-targeted nanophotosensitizer for the efficient photodynamic therapy (PDT) of cervical carcinoma cells. Chlorin e6 (Ce6) as a model photosensitizer was conjugated with succinyl β-cyclodextrin via selenocystamine linkages. Folic acid [...] Read more.
The aim of this study was to fabricate a reactive oxygen species (ROS)-sensitive and folate-receptor-targeted nanophotosensitizer for the efficient photodynamic therapy (PDT) of cervical carcinoma cells. Chlorin e6 (Ce6) as a model photosensitizer was conjugated with succinyl β-cyclodextrin via selenocystamine linkages. Folic acid (FA)-poly(ethylene glycol) (PEG) (FA-PEG) conjugates were attached to these conjugates and then FA-PEG-succinyl β-cyclodextrin-selenocystamine-Ce6 (FAPEGbCDseseCe6) conjugates were synthesized. Nanophotosensitizers of FaPEGbCDseseCe6 conjugates were fabricated using dialysis membrane. Nanophotosensitizers showed spherical shapes with small particle sizes. They were disintegrated in the presence of hydrogen peroxide (H2O2) and particle size distribution changed from monomodal distribution pattern to multimodal pattern. The fluorescence intensity and Ce6 release rate also increased due to the increase in H2O2 concentration, indicating that the nanophotosensitizers displayed ROS sensitivity. The Ce6 uptake ratio, ROS generation and cell cytotoxicity of the nanophotosensitizers were significantly higher than those of the Ce6 itself against HeLa cells in vitro. Furthermore, the nanophotosensitizers showed folate-receptor-specific delivery capacity and phototoxicity. The intracellular delivery of nanophotosensitizers was inhibited by folate receptor blocking, indicating that they have folate-receptor specificity in vitro and in vivo. Nanophotosensitizers showed higher efficiency in inhibition of tumor growth of HeLa cells in vivo compared to Ce6 alone. These results show that nanophotosensitizers of FaPEGbCDseseCe6 conjugates are promising candidates as PDT of cervical cancer. Full article
(This article belongs to the Special Issue ROS-Mediated Therapeutic Approaches for Cells)
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