Egr1's Role in UV-Induced Apoptosis in Prostate Cancer Cells
Author Information
Author(s): Shilpi Arora, Yipeng Wang, Zhenyu Jia, Saynur Vardar-Sengul, Ayla Munawar, Doctor Kutbuddin S, Michael Birrer, Michael McClelland, Eileen Adamson, Dan Mercola
Primary Institution: University of California, Irvine
Hypothesis
Egr1 regulates genes that mediate the apoptotic response to UV irradiation in prostate cancer cells.
Conclusion
Egr1 mediates an apoptotic response in prostate cancer cells upon UV stimulation by regulating numerous target genes.
Supporting Evidence
- UV irradiation led to significant binding of 288 gene promoters by Egr1.
- Egr1 promoter binding had a significant impact on gene expression of target genes.
- Small interfering RNA experiments demonstrated the specific role of Egr1 in gene regulation.
- UV stimulation promotes growth arrest and apoptosis of M12 cells.
- Numerous previously unknown targets of Egr1 were identified, including FasL, MAX, and RRAS2.
Takeaway
When prostate cancer cells are exposed to UV light, a protein called Egr1 helps them to die in a controlled way, which is important for stopping cancer growth.
Methodology
The study used ChIP-on-chip to identify Egr1 binding to gene promoters and validated findings with qRT-PCR and siRNA experiments.
Participant Demographics
Human tumorigenic prostate M12 cells were used in the study.
Statistical Information
P-Value
p<0.005
Statistical Significance
p<0.005
Digital Object Identifier (DOI)
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