Mouse Embryonic Fibroblasts from CD1

Mouse Embryonic Fibroblasts (MEF) are used to support the growth of mouse and human pluripotent stem cells [1]. MEF not only provide a substrate for pluripotent stem cells to grow on, but also secrete critical growth factors to maintain stem cell pluripotency. MEF are isolated from mouse embryos and used at early passages [2]. To serve as feeder cells, MEF must be treated with mitomycin C or by irradiation to prevent cell proliferation. The treated cells can also be used to generate conditioned medium for feeder-free culture of pluripotent stem cells.

MEF from ScienCell Research Laboratories are isolated from embryonic day 14 CD-1 mouse embryos. These cells are cryopreserved at P0 and delivered frozen. Each vial contains 1 x 10^6 cells in 1 ml volume. MEF are characterized by immunofluorescence with antibody specific to fibronectin. MEF are negative for mycoplasma, bacteria, yeast, and fungi. MEF are guaranteed to further expand for 5 population doublings under the conditions provided by ScienCell Research Laboratories.

Recommended Medium

It is recommended to use DMEM (Cat. #09221) supplemented with 10% fetal bovine serum (FBS, Cat. #0010, 0025, 0500) for culturing MEF in vitro.