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Embryonic stem cells cultured in serum free medium acquire bovine apolipoprotein B‐100 from feeder cell layers and serum replacement medium
Author(s) -
Sakamoto Norihisa,
Sakamoto Michiko,
Rosenberg Amy S.
Publication year - 2008
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.22.1_supplement.862.24
Subject(s) - fetal bovine serum , embryonic stem cell , microbiology and biotechnology , heterologous , antibody , apolipoprotein b , stem cell , cell culture , biology , receptor , cell , chemistry , immunology , biochemistry , cholesterol , genetics , gene
Previous studies have demonstrated that cell populations that are cultured with heterologous animal products can acquire xenoantigens, potentially limiting their clinical utility because of immune responses. Embryonic stem cells (ESCs) are an attractive source of multiple potential cellular therapies and are typically derived and routinely cultured on murine embryonic fibroblast (MEFs) feeder cell layers in commercially available serum replacement (SR) medium or fetal calf serum (FCS) containing medium. Recently we found that a strong antibody response was generated in human subjects after the second infusion of therapeutic cells cultured in FCS containing medium. This response was specific for bovine apolipoprotein B‐100 (apoB‐100) which is the major protein component of LDL and targets its binding to abundant low density lipoprotein receptors on the cell surface from which it is internalized. Here we have shown that ESCs cultured on MEFs in SR medium acquired bovine apoB‐100 from MEFs and from the SR medium as well. Our findings also suggest that bovine low density lipoproteins (LDL) are used as critical nutrients for ESC propagation.