Effects of Fatty Acid Synthase Knockdown in Breast Cancer
Author Information
Author(s): Lynn M Knowles, Jeffrey W Smith
Primary Institution: Burnham Institute for Medical Research
Hypothesis
Knockdown of fatty acid synthase (FAS) will lead to significant changes in gene expression related to tumor cell survival and metabolism.
Conclusion
The study reveals that knocking down FAS affects a wide network of pathways involved in tumor cell survival and proliferation.
Supporting Evidence
- 169 genes were up-regulated and 110 down-regulated in response to FAS knockdown.
- FAS knockdown led to down-regulation of pathways regulating lipid metabolism, glycolysis, and oxidative phosphorylation.
- The study identified a core set of 279 genes representing the FAS knockdown signature.
Takeaway
When scientists turned off a gene that helps cancer cells make fat, they found that many other genes changed too, which could help stop the cancer from growing.
Methodology
The study used siRNA to knock down FAS in MDA-MB-435 breast cancer cells and analyzed gene expression changes using BeadArray technology and pathway analysis.
Potential Biases
Potential off-target effects of siRNA were addressed by using multiple siRNA duplexes targeting different regions of the FAS gene.
Limitations
The study focused on a single cell line and the effects were observed over a limited time frame.
Participant Demographics
MDA-MB-435 mammary carcinoma cells were used as the model.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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