The invention provides an in-vitro induction and long-term culture
system, an induced culture method and application of forebrain neural stem cells. The in-vitro induction and long-term culture
system comprises a basal culture medium, as well as an induced differentiation factor and an in-vitro culture factor which are combined with the basal culture medium for use, wherein the basal culture medium comprises a DMEM / F12 liquid basal culture medium, a 0-5*B27 additive, a 0-5*N2 additive, 1%
penicillin /
streptomycin and 0.01-500 mu g / mL 2-
phosphoric acid-
vitamin C; the induced differentiation factor comprises 0.01-500 mu M of a TGF[beta] inhibitor, 0.01-10000 mu M of a BMP inhibitor and 0.01-50 mu M of a
Porcupine inhibitor; and the in-vitro culture factor comprises 0.01-10000 nM of an Src
kinase inhibitor, 0.01-500 mu M of a TGF[beta] inhibitor, 0.01-50 mu M of a GSK3 inhibitor, 0.01-500 ng / mL of an EGF family
growth factor and 0.01-500 ng / mL of an FGF family
growth factor. By using the culture
system, the pluripotent stem cells can be induced
in vitro to be differentiated into the forebrain neural stem cells and cultured
in vitro for a long time, and the stable
molecular phenotype and differentiation potential of the forebrain neural stem cells are maintained.