Figure 5. Role of microtubule-mediated transport in selective retrotransposition.
(A and B) γ-H2Av staining to probe the amount of DNA damage in oocyte upon Ago3&Aub depletion (A) or I-element invasion (B). Arrowhead points the oocyte that possesses DNA breaks. Depolymerizing microtubule (M.T.) by Demecolcine-feeding alleviates the DNA damage in oocyte. Data quantification is presented in Figure S6A and S6B.
(C) RNA-FISH to detect HMS-Beagle or 3S18 transcripts upon microtubule depolymerization.
(D) FISH signal quantification to test the potential contribution of early oocyte transcription on the signal detected in the oocytes of stage 8 egg chambers. FISH signal in the oocytes of stage 2 egg chambers defines the maximum amount of mRNAs generated from early stage oocyte. Since there is no oocyte transcription from stage 2 to stage 8. More than 97% of mRNAs in the oocytes of stage 8 egg chambers are transported from nurse cells. Data are represented as mean ± SD. n = 6 ovarioles from 3 animals.