CFTR

Effect of systemic ataluren treatment on mice with the Pax6^Sey+/- phenotype. The black arrowhead indicates the lenticular stalk; the black arrow indicates the cornea; and the asterisk indicates the ciliary margin. WT, Pax6^+/+; Mt, Pax6^Sey/+; L, lens; r, retina. Original magnification, x5.

CFTR inhibitor CFTR_inh172 leads to PGCs disorder in early zebrafish embryo. Analysis of localization of nanos1/vasa positive cells in embryos by WISH at 50% Epiboly stage with top view.

(A) CFTR Western blot of normal (NL) and CF HBE cultures treated with VX-809 (5 uM) ± VX-770 (5 uM) for 48 hours. “*” indicates the mature, complex glycosylated form of CFTR, band C; “•” indicates the immature band B. (B) Turnover of rescued ΔF508 in BHK-21 cells. ΔF508 was rescued at 27°C in the presence of VX-809 ± VX-770 for 24 hours. After adding cycloheximide (200 ug/ml, 37°C), cells were lysed at the indicated times and analyzed by Western blotting.

△F508CFTR diffusion is increased by different correction mechanisms. A, example trajectories from MDCK cell lines for wtCFTR (black) and △F508CFTR rescued by VX-809 treatment in the absence (red) and presence (blue ) of mCh-CFTR-C. B, summary graph for wtCFTR, r△F508CFTR and CFTR△PDZ diffusion in VX-809-treated and control MDCK cell lines. C, example trajectories for MDCK cells transiently expressing 3FLAG-tagged wtCFTR(black), △F508CFTR rescued by VX-809 (red), CFTR△PDZ ( blue ), and △F508CFTR△PDZ rescued by VX-809 (green). D, summary graph for CFTR dif- fusion in VX-809-treated MDCK transiently transfected with 3FLAG-tagged CFTR constructs. E, example trajectories from MDCK cell lines stably expressing wtCFTR ( left ) and △F508CFTR ( right ) treated with thapsigargin ( black)or CoPo-22 (red) or transiently expressing GFP-GRASP55 (blue ). F, graphs for △F508CFTR ( top ) and wtCFTR (bottom) diffusion in MDCK cell lines treated with thapsigargin or CoPo-22 or transiently expressing GFP-GRASP55. For reference, median and interquartile values for wtCFTR diffusive range are shown by dashed lines(bar 1, top ). G, GFP-GRASP55 is Golgi-localized by immunocytochemical analysis (scale bar, 10 μm). Scale bar in A (500 nm) refers to all trajectories. In panels Band D, statistically significant differences in populations are shown (*, p<0.001). SPT data for MDCK cell lines was derived from 140 –788 trajectories and for transiently transfected MDCK cells from 131–298 trajectories.

(B)ΔISC response to forskolin observed in VX-661-treated CF HBE cells (*P = 0.0021, VX661 vs. vehicle) was prevented by chronic VX-770 treatment and significantly different from VX-661-treated cells (#P=0.0126, VX661 vs. VX661+VX770). (C) The response to CFTR inh-172 that was observed in VX-661-treated cells (*P = 0.0111, VX661 vs. vehicle) was significantly decreased in VX809+VX770 treated cells (#P = 0.0038, VX661 vs. VX661+VX770). Primary CF HBE cultures (ΔF508/ΔF508) were derived from 3 different patients, and 3-4 replicates were performed per patient.

Effect of systemic ataluren treatment on mice with the Pax6^Sey+/- phenotype. The black arrowhead indicates the lenticular stalk; the black arrow indicates the cornea; and the asterisk indicates the ciliary margin. WT, Pax6^+/+; Mt, Pax6^Sey/+; L, lens; r, retina. Original magnification, x5.

CFTR inhibitor CFTR_inh172 leads to PGCs disorder in early zebrafish embryo. Analysis of localization of nanos1/vasa positive cells in embryos by WISH at 50% Epiboly stage with top view.

(A) CFTR Western blot of normal (NL) and CF HBE cultures treated with VX-809 (5 uM) ± VX-770 (5 uM) for 48 hours. “*” indicates the mature, complex glycosylated form of CFTR, band C; “•” indicates the immature band B. (B) Turnover of rescued ΔF508 in BHK-21 cells. ΔF508 was rescued at 27°C in the presence of VX-809 ± VX-770 for 24 hours. After adding cycloheximide (200 ug/ml, 37°C), cells were lysed at the indicated times and analyzed by Western blotting.

△F508CFTR diffusion is increased by different correction mechanisms. A, example trajectories from MDCK cell lines for wtCFTR (black) and △F508CFTR rescued by VX-809 treatment in the absence (red) and presence (blue ) of mCh-CFTR-C. B, summary graph for wtCFTR, r△F508CFTR and CFTR△PDZ diffusion in VX-809-treated and control MDCK cell lines. C, example trajectories for MDCK cells transiently expressing 3FLAG-tagged wtCFTR(black), △F508CFTR rescued by VX-809 (red), CFTR△PDZ ( blue ), and △F508CFTR△PDZ rescued by VX-809 (green). D, summary graph for CFTR dif- fusion in VX-809-treated MDCK transiently transfected with 3FLAG-tagged CFTR constructs. E, example trajectories from MDCK cell lines stably expressing wtCFTR ( left ) and △F508CFTR ( right ) treated with thapsigargin ( black)or CoPo-22 (red) or transiently expressing GFP-GRASP55 (blue ). F, graphs for △F508CFTR ( top ) and wtCFTR (bottom) diffusion in MDCK cell lines treated with thapsigargin or CoPo-22 or transiently expressing GFP-GRASP55. For reference, median and interquartile values for wtCFTR diffusive range are shown by dashed lines(bar 1, top ). G, GFP-GRASP55 is Golgi-localized by immunocytochemical analysis (scale bar, 10 μm). Scale bar in A (500 nm) refers to all trajectories. In panels Band D, statistically significant differences in populations are shown (*, p<0.001). SPT data for MDCK cell lines was derived from 140 –788 trajectories and for transiently transfected MDCK cells from 131–298 trajectories.

(B)ΔISC response to forskolin observed in VX-661-treated CF HBE cells (*P = 0.0021, VX661 vs. vehicle) was prevented by chronic VX-770 treatment and significantly different from VX-661-treated cells (#P=0.0126, VX661 vs. VX661+VX770). (C) The response to CFTR inh-172 that was observed in VX-661-treated cells (*P = 0.0111, VX661 vs. vehicle) was significantly decreased in VX809+VX770 treated cells (#P = 0.0038, VX661 vs. VX661+VX770). Primary CF HBE cultures (ΔF508/ΔF508) were derived from 3 different patients, and 3-4 replicates were performed per patient.