Abstract | BACKGROUND: To explore the suppressive effect of Apoptin-loaded oncolytic adenovirus (Ad-VT) on luciferase-labeled human melanoma cells in vitro and in vivo. METHODS: The stable luciferase-expressing human melanoma cells A375-luc or M14-luc were obtained by transfecting the plasmid pGL4.51 and selection with G418, followed by luciferase activity, genetic stability and bioluminescence intensity assays. In vitro, the inhibitory effects of Ad-VT on A375-luc or M14-luc were evaluated using the MTS cell proliferation, FITC- Annexin V apoptosis detection, transwell migration, Matrigel invasion and scratch assays. The inhibition pathway in Ad-VT-infected A375-luc and M14-luc cells were analyzed by JC-1 staining and Western-blot detection of mitochondrial apoptosis-related proteins. In vivo, the suppressive effects of Ad-VT on A375-luc or M14-luc were assessed by living imaging technology, tumor volume, bioluminescence intensity, survival curves and immunohistochemical analysis of the tumors from the xenograft tumor model BALB/c nude mice. RESULTS: The growth and migration of A375-luc and M14-luc were significantly inhibited by Ad-VT in vitro. The evaluations of A375-luc and M14-luc tumor models in BALB/c nude mice were successfully performed using living imaging technology. Ad-VT had an anti- tumor effect by reducing tumor growth and increasing survival in vivo. Ad-VT significantly changed the mitochondrial membrane potential by triggering the the mitochondrial release of apoptosis-related proteins, AIF ( apoptosis inducing factor), ARTS (Apoptosis-Related Proteins), and Cyto-c ( cytochrome c) from the mitochondria. CONCLUSION: Ad-VT reduced the mitochondrial membrane potential in A375-luc or M14-luc cells and induced the mitochondrial release of AIF, ARTS and Cyto-C. Ad-VT induced apoptosis in A375-luc or M14-luc cells via the mitochondrial apoptotic pathway.
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Authors | Min Li, Yilong Zhu, Bing Bai, Jinbo Fang, Wei Yao, Yiquan Li, Shanzhi Li, Xiao Li, Ningyi Jin, Rihua Jiang |
Journal | Cancer biomarkers : section A of Disease markers
(Cancer Biomark)
Vol. 32
Issue 3
Pg. 251-262
( 2021)
ISSN: 1875-8592 [Electronic] Netherlands |
PMID | 34459386
(Publication Type: Journal Article)
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Topics |
- Adenoviridae
(pathogenicity)
- Animals
- Cell Line, Tumor
- Cell Proliferation
- Disease Models, Animal
- Humans
- Melanoma
(microbiology)
- Mice
- Mice, Nude
- Xenograft Model Antitumor Assays
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