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PMEF-N

Sigma-Aldrich

EmbryoMax® Primary Mouse Embryonic Fibroblasts

Synonym(s):

NEO-MEFs, Neo MEF Feeder Cells, Neo Mouse Feeder Cells, Neomycin Restistant PMEFs

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About This Item

UNSPSC Code:
41106509
eCl@ss:
32011203
NACRES:
NA.75

biological source

mouse

Quality Level

100

manufacturer/tradename

Specialty Media
EmbryoMax®

technique(s)

cell culture | stem cell: suitable

input

sample type induced pluripotent stem cell(s)
sample type primary embryotic fibroblasts (PMEFs)
sample type: mouse embryonic stem cell(s)

shipped in

liquid nitrogen

General description

Primary Mouse Embryo Fibroblasts, Neo resistant, strain FVB, are Mytomycin C treated and serve as a feeder layer for both mouse and human ES/IPS cells. MEF cells are resistant to neomycin.

Plating MEF Feeder Cells

Procedure:

1. Prior to thawing PMEF feeder cells, coat plates/flasks with Gelatin solution.
2. Thaw PMEF vial(s) quickly in a 37 °C water bath and transfer to a 15 mL tube (already containing 10 mL of warm PMEF Feeder Cell Medium). Gently invert the tube to distribute, and centrifuge at 300 xg for 4–5 minutes.
3. Remove supernatant and resuspend the cell pellet in warm PMEF Feeder Cell Medium.
4. Remove the Gelatin solution from plates/flasks, and aliquot the PMEF feeder cell suspension at the densities recommended in Table 4.1 of the mouse ES protocol guide
5. Incubate the PMEF Feeder cells at 37 °C with 5% CO2. Use Figures 4A, B and C in the mouse ES protocol guide as a guide for an estimate of correct PMEF density and
appearance. Gelatinized plates may be used for 12–14 days.
The EmbryoMax range of PMEF cells provides researchers with a convenient solution for ES cell culture by eliminating the need for time consuming feeder cell isolation and preparation. Many embryonic stem cell culture protocols necessitate the use of primary mouse embryo fibroblast (PMEF) cells. In these protocols, ES cells are typically cultured on a monolayer of PMEF feeder cells. Feeder cells perform two important roles in stem cell culture: they secrete several important growth factors into the medium, which help maintain pluripotency, and they provide a cellular matrix for ES cells to grow.

Cell Line Description

Primary Mouse Embryo Fibroblasts

Packaging

5-6x106 ea

Storage and Stability

After receipt, vials should be stored at -80°C. If storing for longer than 6 months, store in the vapor phase of liquid nitrogen (make sure the cap is tight) for up to 2 years.

Legal Information

EmbryoMax is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 1

Flash Point(F)

does not flash

Flash Point(C)

does not flash

Certificates of Analysis (COA)

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Protocols

Mouse Embryonic Stem Cell Culture Procedures & Protocols

Stem Cell protocols for cryopreservation, thawing of cryopreserved stem cells and media preparation.

Induced Pluripotent Stem Cell Reprogramming Protocols

Stem cell reprogramming protocols to generate human induced pluripotent stem cells (iPSCs) including viral and non-viral RNA based methods.

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