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. 2020 Dec 11;10:22191. doi: 10.1038/s41598-020-77490-4

Figure 1.

Figure 1

EpCAM aptamer-guided RNAi effectively silenced survivin. (a) Specificity and efficacy of EpCAMaptamer guided RNAi in knocking down survivin mRNA. Chimera or negative control chimera were incubated with HT-29 or HEK-2913T cells for 24 hours and the total RNA was extracted for qRT-PCR analysis of survivin mRNA levels. GAPDH was used as an internal control. (b, c) HT-29 Tumour-bearing mice were treated with 2 nmol/mouse of PEG-labelled chimera for 48 hours. The tumours were collected for RNA extraction followed by qRT-PCR analysis of survivin mRNA expression (b) and 5′RACE assay (c). (d) Effective downregulation of survivin protein via EpCAM aptamer-guided RNAi. Chimera or negative control chimera were incubated with HT-29 or HEK-2913T cells for 48 hours and the survivin protein levels were analyzed using Western blot analysis. β-actin was used as a loading control. (e) The bar graph shows the survivin protein levels in various treatment groups. Data shown are means ± SEM, n = 3. *p < 0.05, **p < 0.005. NS, no statistically significant difference..