N-acetylcysteine amide augments the therapeutic effect of neural stem cell-based antiglioma oncolytic virotherapy.

Abstract

Current research has evaluated the intrinsic tumor-tropic properties of stem cell carriers for targeted anticancer therapy. Our laboratory has been extensively studying in the preclinical setting, the role of neural stem cells (NSCs) as delivery vehicles of CRAd-S-pk7, a gliomatropic oncolytic adenovirus (OV). However, the mediated toxicity of therapeutic payloads, such as oncolytic adenoviruses, toward cell carriers has significantly limited this targeted delivery approach. Following this rationale, in this study, we assessed the role of a novel antioxidant thiol, N-acetylcysteine amide (NACA), to prevent OV-mediated toxicity toward NSC carriers in an orthotropic glioma xenograft mouse model. Our results show that the combination of NACA and CRAd-S-pk7 not only increases the viability of these cell carriers by preventing reactive oxygen species (ROS)-induced apoptosis of NSCs, but also improves the production of viral progeny in HB1.F3.CD NSCs. In an intracranial xenograft mouse model, the combination treatment of NACA and NSCs loaded with CRAd-S-pk7 showed enhanced CRAd-S-pk7 production and distribution in malignant tissues, which improves the therapeutic efficacy of NSC-based targeted antiglioma oncolytic virotherapy. These data demonstrate that the combination of NACA and NSCs loaded with CRAd-S-pk7 may be a desirable strategy to improve the therapeutic efficacy of antiglioma oncolytic virotherapy.

• Authors: Chung Kwon Kim, Atique U Ahmed, Brenda Auffinger, Ilya V Ulasov, Alex L Tobias, Kyung-Sub Moon, Maciej S Lesniak
• Journal: Molecular therapy : the journal of the American Society of Gene Therapy (Mol Ther) Vol. 21 Issue 11 Pg. 2063-73 (Nov 2013) ISSN: 1525-0024 [Electronic] United States
• PMID: 23883863 (Publication Type: Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't)

Chemical References

• N-Acetylcysteinamide
• Acetylcysteine

Topics

• Acetylcysteine (analogs & derivatives, pharmacology)
• Adenoviridae (drug effects, genetics)
• Animals
• Cell Line, Tumor
• Glioma (pathology, therapy)
• Mice
• Mice, Nude
• Molecular Targeted Therapy (methods)
• Neoplasms, Experimental
• Neural Stem Cells (transplantation)
• Oncolytic Virotherapy (methods)
• Oncolytic Viruses (drug effects, genetics)
• Virus Replication
• Xenograft Model Antitumor Assays