Phosphate Buffered Solution (PBS, Corning) and fixed in 4% paraformaldehyde
(PFA) overnight, followed by blocking and permeabilization with 0.1% Triton-X
100 (T8787, Sigma) and 5% BSA (A4503, Sigma) for one hour at RT. Antibody
dilution buffer (Ab buffer) was comprised of PBS supplemented with 0.1% Triton-X
100 and 1% BSA. Samples were incubated with primary antibodies overnight at
4°C (
followed by 3 washes with PBS and incubation with fluorescent-conjugated
secondary antibodies at 1:250 in Ab buffer for 1 hour at RT (
onto SuperFrost Slides (FisherBrand, 12-550-15) with ProLong Antifade mounting
solution with DAPI (Invitrogen, P36931). Images were acquired with a Zeiss Axio
Observer Z.1 Spinning Disk Confocal (Carl Zeiss) or with an ImageXpress Micro
Confocal High-Content Imaging System (Molecular Devices) and processed using
ZenBlue and ImageJ.