2.5. Immunofluorescence assay (IFA)

SL Sunhee Lee
DL Dong‐Uk Lee
YN Yun‐Hee Noh
SL Seung‐Chul Lee
HC Hwan‐Won Choi
HY Hyoung‐Seok Yang
JS Jun‐Ho Seol
SM Seong Hwan Mun
WK Won‐Myoung Kang
HY Hyekyung Yoo
CL Changhee Lee
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Vero cells grown on microscope coverslips placed in 6‐well tissue culture plates were mock infected or infected with PEDV at a multiplicity of infection (MOI) of 0.1. The virus‐infected cells were cultured until 24 hr, fixed with 4% paraformaldehyde for 10 min at room temperature (RT) and permeabilized with 0.2% Triton X‐100 in PBS at RT for 10 min. The cells were blocked with 1% bovine serum albumin (BSA) in PBS for 30 min at RT and then incubated for 2 hr with a monoclonal antibody (MAb) specific for PEDV N protein (ChoogAng Vaccine Laboratories). After being washed five times with PBS, the cells were incubated for 1 hr at RT with a goat anti‐mouse secondary antibody conjugated to Alexa Fluor 488 (Invitrogen) followed by counterstaining with 4′,6‐diamidino‐2‐phenylindole (DAPI; Sigma). The coverslips were mounted onto glass microscope slides using mounting buffer and the stained cells were visualized using a fluorescence Leica DM IL LED microscope (Leica).

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