mouse embryonic fibroblasts (MEFs; Millipore) in hiPS media (Bilican et al., 2012 (link); Dimos et al., 2008 (link)). To generate motor neurons,
undifferentiated iPS cells were incubated with 10 μM Y27632 (Calbiochem)
then passaged, triturated, and placed into ultra-low adherent culture dishes
(Corning) for seeding of embryoid bodies (EBs). For the first 11 days, cells
were kept in suspension in hiPS media without bFGF. At day 11, EBs were switched
to neural induction medium. At day 28, EBs were dissociated, transfected using
Lonza Nucleofector with mRNA beacons and HB9 (9Kb)-promoter-GFP, and plated onto
PDL/laminin-coated (BD Biosciences) glass (
and Banker, 2006
allowed to settle on glass coverslips flipped over primary glial monolayers.