The Combinatorial Effect of Ad-IL-24 and Ad-HSV-tk/GCV on Tumor Size, Autophagy, and UPR Mechanisms in Multiple Myeloma Mouse Model
- PMID: 38436816
- DOI: 10.1007/s10528-024-10671-2
The Combinatorial Effect of Ad-IL-24 and Ad-HSV-tk/GCV on Tumor Size, Autophagy, and UPR Mechanisms in Multiple Myeloma Mouse Model
Abstract
Multiple myeloma is a type of malignant neoplasia whose treatment has changed over the past decade. This study aimed to investigate the effects of combination of Adenovector-carrying interleukin-24 and herpes simplex virus 1 thymidine kinase/ganciclovir on tumor growth, autophagy, and unfolded protein response mechanisms in mouse model of multiple myeloma. Six groups of mice, including Ad-HSV-tk/GCV, Ad-IL-24, Ad-HSV-tk/IL-24, Ad-GFP, and positive and negative controls, were investigated, and each group was injected every 72 h. The tumor size was measured several times. The expression of LC3B evaluated through western blotting and ASK-1, CHOP, Caspase-3, and ATF-6 genes in the UPR and apoptosis pathways were also analyzed by the quantitative polymerase chain reaction (qPCR) method. The present results showed that the injection of Ad-HSV-tk/GCV, Ad-HSV-tk/IL-24, and metformin reduced the tumor size. The expression of LC3B was significantly higher in the treatment groups and positive control groups compared to the negative control group. The expression of CHOP, caspase-3, and ATF-6 genes was significantly higher in the Ad-IL-24 group compared to the other treatment groups. Besides, the ASK-1 expression was significantly lower in the Ad-IL-24 group as compared to the other groups. Overall, the results indicated that the presence of the HSV-tk gene in the adenovectors reduced the size of tumors and induced autophagy by triggering the expression of LC3B protein. The presence of the IL-24 might affect tumor growth but not as much the therapeutic effect of HSV-tk. Furthermore, the results indicated that co-administration of IL-24 and HSV-tk had no synergistic effect on tumor size control.
Keywords: Adenovector; Autophagy; GCV; HSV-tk; IL-24; Multiple myeloma; UPR.
© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
Conflict of interest statement
Declarations. Competing interests: The authors declare no competing interests. Conflict of interest: The authors declare they have no conflict of interests. Ethical Approval: This research was reviewed by the National Ethics Committee in Biomedical Research and approved under Code of Ethics IR.IAU.SRB.REC.1398.202.
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