JOURNAL ARTICLE

Immunopanning selection of A2B5-positive cells increased the differentiation efficiency of induced pluripotent stem cells into oligodendrocytes

Shin-ichiro Ogawa, Yasuhito Tokumoto, Jun Miyake, Teruyuki Nagamune
Neuroscience Letters 2011 February 4, 489 (2): 79-83
21134419
Oligodendrocytes are the myelinating cells of the central nervous system (CNS), and defects in these cells can result in CNS dysfunction. Although oligodendrocyte precursor cell (OPC) transplantation therapy is an effective cure for several disorders, there is no readily available source of these cells. Recent studies have described the generation of induced pluripotent stem cell (iPSC) from somatic cells, leading to speculation that this technique might become a novel therapeutic tool in regenerative medicine. In a previous study, we were able to produce O4 positive (O4(+)) oligodendrocytes from mouse iPSC in vitro. Unfortunately, the efficiency of differentiation achieved was relatively low (2.3%). In the current study, we improved the differentiation efficiency using a mouse monoclonal antibody (A2B5) to select cells of oligodendrocyte lineage. During in vitro differentiation, we purified A2B5-positive (A2B5(+)) cells by immunopanning from a mixed culture of iPSC-derived cells. This procedure increased the differentiation efficiency of O4(+) oligodendrocytes to 43.5%. We also examined the expression of myelin basic protein (MBP), a marker of mature oligodendrocytes. After 21 days of terminal differentiation, 62.3% of iPSC-derived O4(+) oligodendrocytes expressed MBP.

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