Enhanced neuronal differentiation in a three-dimensional collagen-hyaluronan matrix

Brännvall, KarinUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi (author)

Efficient 3D cell systems for neuronal induction are needed for future use in tissue regeneration. In this study, we have characterized the ability of neural stem/progenitor cells (NS/PC) to survive, proliferate, and differentiate in a collagen type I-hyaluronan scaffold. Embryonic, postnatal, and adult NS/PC were seeded in the present 3D scaffold and cultured in medium containing epidermal growth factor and fibroblast growth factor-2, a condition that stimulates NS/PC proliferation. Progenitor cells from the embryonic brain had the highest proliferation rate, and adult cells the lowest, indicating a difference in mitogenic responsiveness. NS/PC from postnatal stages down-regulated nestin expression more rapidly than both embryonic and adult NS/PC, indicating a faster differentiation process. After 6 days of differentiation in the 3D scaffold, NS/PC from the postnatal brain had generated up to 70% neurons, compared with 14% in 2D. NS/PC from other ages gave rise to approximately the same proportion of neurons in 3D as in 2D (9-26% depending on the source for NS/PC). In the postnatal NS/PC cultures, the majority of III-tubulin-positive cells expressed glutamate, -aminobutyric acid, and synapsin I after 11 days of differentiation, indicating differentiation to mature neurons. Here we report that postnatal NS/PC survive, proliferate, and efficiently form synapsin I-positive neurons in a biocompatible hydrogel.

Bergman, KristofferUppsala universitet,Institutionen för materialkemi(Swepub:uu)krber255 (author)
Wallenquist, UlrikaUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi (author)
Svahn, StefanUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi (author)
Bowden, TimUppsala universitet,Institutionen för materialkemi(Swepub:uu)tibow735 (author)
Hilborn, JönsUppsala universitet,Institutionen för materialkemi(Swepub:uu)johil255 (author)
Forsberg-Nilsson, KarinUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi(Swepub:uu)karifors (author)
Uppsala universitetInstitutionen för medicinsk biokemi och mikrobiologi (creator_code:org_t)

By the author/editor: Brännvall, Karin; Bergman, Kristof ...; Wallenquist, Ulr ...; Svahn, Stefan; Bowden, Tim; Hilborn, Jöns; show more...; Forsberg-Nilsson ...; show less...

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