Levels of transcripts coding for trypomastigote surface glycoprotein in epimastigote parasites overexpressing TcUBP1–GFP.
A, representative images of isolated epimastigotes transfected with GFP or TcUBP1–GFP and induced with tetracycline (Tet+) or not (Tet−). Grayscale images of each channel are shown on the left. Merged images showing expression of GFP (in green), TcUBP1 (anti-RRM signal, in red), and DAPI staining (in blue) for visualization of kinetoplast (K) and nuclear (N) DNA are shown on the right. B, RT-qPCR results for transcripts encoding trypomastigote surface glycoproteins (SA85, C71, TSA-1, and GP85), the SGPm element, and the SMUGL transcript coding for epimastigote surface glycoprotein as control. The values are expressed as the means ± S.D. of the fold changes in log2 scale from three independent experiments. The average data points are shown by filled circles (SGP mRNAs) and diamonds (control). ***, p < 0.001; two-way ANOVA with Bonferroni's post hoc test. Dotted lines indicate 2-fold enrichment (upper, log2 FC = 1) or depletion (lower, log2 FC = −1).