Figure 2.
Inhibition of the Eleanor RNA cloud, ESR1 mRNA, and LTED cell proliferation by the phytoalexin fractions. (A) The Eleanor RNA cloud regressed upon treatment with the biochemical fractions of the soybean extracts. LTED cells were treated with each phytoalexin fraction (Fig. 1) and subjected to RNA FISH to visualize Eleanor foci (green). The nucleus was counterstained with DAPI (blue). Resveratrol has been previously shown to inhibit Eleanors10. Scale bar, 10 µm. (B) Transcription of ESR1 mRNA was inhibited with the extract fractions. Quantitative RT-PCR was performed to measure relative ESR1 mRNA levels in LTED cells treated as indicated. Values were normalized against GAPDH mRNA, and values for cells treated with DMSO (control) were set to 1. The bars represent the means ± S.D. n > 3. Resveratrol has been previously shown to efficiently inhibit ESR1 mRNA10. ***p < 0.001; *****p < 0.00001. (C) LTED cell proliferation was inhibited by the extract fractions. LTED cells were treated as indicated, and the viabilities were measured. Resveratrol has been previously shown to inhibit LTED cell proliferation10 *****p < 0.00001.