From: Advances, challenges and future directions for stem cell therapy in amyotrophic lateral sclerosis
Culture method | Differentiation protocol | Neuronal/glial marker expressed | Comments | Reference |
---|---|---|---|---|
Adherent method | 24 h pre-incubation in DMEM/FCS 20% followed by 24 h incubation in DMEM containing BHA, valproic acid, forskolin, hydrocortisone and insulin. | Nestin (developing nervous system cells) NeuN (neuronal nuclei) GFAP (mature astrocytes) I-NFM (Neurons) | Cells started to lose their neuronal morphology after 4–5 days and all died in 14 days. | [88] |
Adherent method | 14Â days incubation in DMEM containing insulin, indomethacin and IBMX | Vimentin (Schwann cells) Trk-A (central nervous system) NSE (early neuronal progenitors) | Low neuronal marker expression also in undifferentiated ADSCs. 25% differentiation rate obtained. Cells not able to generate action potentials. | [90] |
Adherent method with or without human Schwann cells | 24 h pre-incubation in DMEM/FBS 20% and β-mercaptoethanol followed by 8-16 h incubation in DMEM containing DMSO, β-mercaptoethanol and BHA | GFPA S-100 (Astrocytes and Schwann cells) NeuN Nestin Gal-C (Oligodendrocyte) | Cell morphology turned back to fibroblast shape after 72 h in normal basal medium. Co-culture with human irradiated Schwann cells enhanced survival (12 days) and expression of myelin proteins. | [91] |
Adherent method | 7 days incubation in DMEM containing bFGF followed by 7 days incubation in DMEM containing forskolin | GFPA I-NFM Tuj −1 (neuron specific β-III tubulin) Nestin SNAP-25 (synaptic marker) CNPase (Oligodendrocyte) | Inward and outward ion current in patch-clamp experiment. High mRNA expression of ion channels. Low differentiation marker expression also in undifferentiated ADSCs. | [92] |
Neurosphere method followed by maturation on poly-D-lysine | 8 days pre-incubation in DMEM containing β-mercaptoethanol and b-FGF followed by 7 days incubation in neural basal medium (N2B27) and further 7 days in N2B27 medium containing EGF and bGFG. Final maturation achieved from neurosphere dissociated progenitors after 14 day culture in N2B27 media containing retinoic acid and BDNF | MAP2 (mature neurons) Nestin Sox1(neural tube development) Pax6 (human neuroepithelium) Vimentin | Inward and outward ion currents in patch-clamp experiment. High mRNA expression of ion channels | [95] |