Journal: Bioengineered
Article Title: Silencing circular RNA circ_0054537 and upregulating microRNA-640 suppress malignant progression of renal cell carcinoma via regulating neuronal pentraxin-2 (NPTX2)
doi: 10.1080/21655979.2021.1984002
Figure Lengend Snippet: NPTX2 was upregulated in RCC and targeted by miR-640. (a) GEPIA showed NPTX2 expression on box plots in kidney renal clear cell carcinoma (KIRC, also named as ccRCC) tumor tissues and normal tissues. (b) RT-qPCR detected NPTX2 mRNA level in tissues from 39 RCC patients. (c) Pearson’s correlation analysis analyzed the correlation between miR-640 and NPTX2 mRNA levels in RCC tissues. (d, e) Western blotting detected PTX2 protein level in 39 RCC patients’ tissues and cells (HK-2, 786-O and A498). (f) The predicted miR-640-binding sites in NPTX2-3ʹUTR-WT were mutated. (g, h) Dual-luciferase reporter assay compared luciferase activity of NPTX2-3ʹUTR-WT/MUT vectors between miR-con transfection and miR-640 transfection in 786-O and A498 cells. (i, j) RIP assay detected RNA enrichment of miR-640 and NPTX2 mRNA between anti-Ago2-mediated complex and anti-IgG-mediated complex. (k) Western blotting compared NPTX2 protein level between in-miR-con transfection and in-miR-640 transfection in 786-O and A498 cells. ** P < 0.01 and *** P < 0.001
Article Snippet: Protein G Sepharose 4 Fast Flow bead slurry (GE Healthcare, Beijing, China) was pre-coated with antibody against human Ago2 (anti-Ago2; ab32381, 1:50; Abcam) or the negative control anti-IgG (ab109489, 1:100; Abcam).
Techniques: Expressing, Quantitative RT-PCR, Western Blot, Binding Assay, Luciferase, Reporter Assay, Activity Assay, Transfection