Liposome-based DNA carriers and their effects on gene expression
Author Information
Author(s): Anna Fiszer-Kierzkowska, Natalia Vydra, Aleksandra Wysocka-Wycisk, Zuzana Kronekova, Michał Jarząb, Katarzyna Marta Lisowska, Zdzisław Krawczyk
Primary Institution: Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie Memorial Center and Institute of Oncology, Gliwice Branch
Hypothesis
Do liposome-based DNA carriers induce cellular stress responses and alter gene expression patterns in transfected cells?
Conclusion
Some cationic liposomes may not be suitable for functional studies on hsp promoters, and lipofection can cause unintended changes in global gene expression in transfected cells.
Supporting Evidence
- Lipofectin and Lipofectamine 2000 were found to activate the Hspa1b promoter at physiological temperatures.
- Microarray analysis revealed significant changes in gene expression in cells treated with Lipofectamine.
- The study identified specific regulatory elements in the Hspa1b promoter responsible for liposome-induced transcriptional activation.
Takeaway
Some liposomes used to deliver DNA into cells can accidentally turn on stress genes, which might confuse scientists studying those genes.
Methodology
The study involved transient transfections using various liposome formulations and analyzed gene expression changes using microarrays.
Potential Biases
Potential bias due to the use of specific liposome formulations that may not represent all types.
Limitations
Not every liposome formulation induces hsp transcription, and the study focused on specific cell lines.
Participant Demographics
Mouse melanoma B16F10 cells and rat hepatoma FTO cells were used in the study.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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