Just before injection into Drosophila melanogaster.: Unterschied zwischen den Versionen

Aktuelle Version vom 18. Januar 2018, 19:31 Uhr

2008). All foscrb variants had been integrated into the landing web-site attP40, with the stock y, v, P(nos-phiC31\int.NLS)X ; P(CaryP)attP40 (Bloomington 25709). Embryo collection, antibody staining, and cuticle preparation At twice threshold intensity for AP generation with trains of pulses embryos had been collected on apple juice plates for 2 hr at 25and then incubated for six hr at 25or 12 hr at 19 dechorionated in 50 bleach for 3 min, and fixed for 20 min in 4 formaldehyde in phosphatebuffered saline/heptane. Generation of transgenic flies Transgenic flies have been generated through the phiC31 integrase mediated site-specific integration into attP landing-sites (reviewed in Venken and Bellen 2007). For the injection and establishment of transgenic lines standard protocols had been followed (Bachmann et al. 2008). All foscrb variants have been integrated in to the landing internet site attP40, of your stock y, v, P(nos-phiC31\int.NLS)X ; P(CaryP)attP40 (Bloomington 25709). Embryo collection, antibody staining, and cuticle preparation Embryos have been collected on apple juice plates for two hr at 25and then incubated for 6 hr at 25or 12 hr at 19 dechorionated in 50 bleach for 3 min, and fixed for 20 min in four formaldehyde in phosphatebuffered saline/heptane. For heat fixation, dechorionated embryos have been sunk into boiling TTS answer (68 mM NaCl, 0.03 Triton X-100) and then transferred quickly to ice. Devitellinization was done in heptane/methanol. Embryos had been blocked for two hr at space temperature in PBT (phosphate-buffered saline + 0.1 Triton X-100) + five standard horse serum. Embryos were incubated for two hr at space temperature with principal antibodies: rat anti-Crb two.eight, 1:500, (Richard et al. 2006a), mouse anti-Crb-Cq4, 1:300 (Tepass et al. 1990), mouse anti-Discs huge (Dlg) 4F3, 1:50 [Developmental Research Hybridoma Bank (DSHB), 1:50], mouse anti-Armadillo N2 7A2, 1:50 (DSHB) (Riggleman et al. 1990), rabbit anti-Stranded at second (Sas, 1:500; kindly provided by E. Organ and D. Cavener), rabbit antiCanoe (Cno), 1:1.000 (Matsuo et al. 1999, kindly supplied by K. Takahashi), rabbit anti-Pyd, 1:five.000 (Djiane et al. 2011, kindly offered by Sarah Bray), guinea pig anti-Eyegone (1:1000) (Aldaz et al. 2003, kindly supplied by Natalia Azpiazu), rabbit anti-phospho moesin (Cell Signaling Technology, cat. no. 3150, 1:100), mouse anti-alpha-spectrin SA9, 1:25 (DSHB), rabbit anti-GFP (Invitrogen, cat. no. A11122, 1:500). Incubations using the suitable secondary antibodies had been performed for 1 hr at room temperature: 1:500 for Alexa Fluor 488-, 568-, and 647-conjugated antibodies (Invitrogen). Stained embryos have been mounted in glycerin propyl gallate (75 glycerol, 50 mg/mL propyl gallate) and visualized using a Zeiss LSM 780 NLO confocal microscope having a C-Apochromat 40x/1.2W Corr objective together with the correction collar at 0.18 (at this position the brightness and contrast was enhanced). All photos were taken under exactly the same settings for laser power, PMT achieve and offset. Maximal projections and merging was performed applying Fiji and Adobe Photoshop CS4. The amount of embryos on the plate was counted and also the plate was further incubated at 25 Immediately after roughly 48 hr, the amount of empty eggshells was determined and divided by the total variety of embryos to figure out the viability.