Abstract:
BACKGROUND:Human embryonic stem cells (hESCs) can differentiate into any human cell type, including CNS cells, and thus have high potential in regenerative medicine. Several protocols exist for neuronal differentiation of hESCs, which do not necessarily work for all hESC lines. MATERIALS & METHODS:We tested the differentiation capacity of four similarly derived and cultured hESC lines (HS181, HS360, HS362 and HS401) in suspension culture in relatively simple neural differentiation medium for up to 20 weeks. RESULTS:All the hESC lines differentiated into neuronal cells, but in a line-dependent manner. Using our method, the HS181- and HS360-derived neurospheres differentiated in vitro into pure neuronal cell populations within 6 weeks, whereas HS362 and HS401 reached their peak of differentiation in 12 weeks, but never produced pure neuronal cell populations using the present method. The withdrawal of FGF from suspension culture increased the in vitro differentiation potential. The hESC-derived neurospheres formed functional neuronal networks when replated on a microelectrode array and responded as expected to pharmacologic modulation. CONCLUSION:Simple neurosphere culture is a suitable method for producing hESC-derived neuronal cells that can form functional neuronal networks from a number of hESC lines. The variation in the differentiation potential of hESC lines into neuronal cells must be carefully considered by those comparing various differentiation methods and designing transplantation therapies for neuronal disorders.
journal_name
Regen Medjournal_title
Regenerative medicineauthors
Lappalainen RS,Salomäki M,Ylä-Outinen L,Heikkilä TJ,Hyttinen JA,Pihlajamäki H,Suuronen R,Skottman H,Narkilahti Sdoi
10.2217/rme.10.58subject
Has Abstractpub_date
2010-09-01 00:00:00pages
749-62issue
5eissn
1746-0751issn
1746-076Xjournal_volume
5pub_type
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