The present invention provides
[1] a method for producing a retinal tissue, including the following steps (1) to (3):
(1) a first step of subjecting pluripotent stem cells to floating culture in a serum-free medium containing a substance inhibiting the Wnt signal pathway to form an aggregate of pluripotent stem cells,
(2) a second step of subjecting the aggregate formed in the first step to floating culture in a serum-free medium containing a basement membrane preparation, and
(3) a third step of subjecting the aggregate cultured in the second step to floating culture in a serum-containing medium;
[2] a method for producing an optic-cup-like structure, including a step of subjecting an aggregate containing the retinal tissue cultured in the step (3) above to floating culture in a serum-free medium or serum-containing medium each containing a substance acting on the Sonic hedgehog signal pathway and a substance acting on the Wnt signal pathway;
[3] a method for producing a retinal pigment epithelium, including a step of subjecting an aggregate containing the retinal tissue cultured in the step (3) above to floating culture in a serum-free medium or serum-containing medium each containing a substance acting on the Wnt signal pathway (wherein said serum-free medium and serum-containing medium are free of a substance acting on the Sonic hedgehog signal pathway); and
[4] a method for producing a retinal layer-specific neural cell, including bringing a retinal progenitor cell contained in a retinal tissue derived from a primate pluripotent stem cell into contact with a substance inhibiting the Notch signal pathway.
本发明提供
[1]一种生产视网膜组织的方法,包括以下步骤(1)至(3):
(1) 第一步,将多能干细胞置于含有抑制 Wnt 信号通路的物质的无血清
培养基中进行漂浮培养,以形成多能干细胞聚集体、
(2) 第二步,将第一步中形成的聚集体置于含有基底膜制剂的无血清
培养基中进行漂浮培养,以及
(3) 第三步,将第二步培养出的聚合体置于含血清
培养基中进行漂浮培养;
[2]一种生产视杯样结构的方法,包括以下步骤:将含有在上述步骤(3)中培养的视网膜组织的集合体置于无血清
培养基或含血清
培养基中进行漂浮培养,每种
培养基都含有一种作用于Sonic hedgehog信号通路的物质和一种作用于Wnt信号通路的物质;
[3]一种生产视网膜色素上皮细胞的方法,包括以下步骤:将含有在上述步骤(3)中培养的视网膜组织的集合体置于无血清
培养基或含血清
培养基中进行漂浮培养,每种
培养基均含有作用于Wnt信号通路的物质(其中所述无血清
培养基和含血清
培养基不含作用于声子刺猬信号通路的物质);以及
[4]一种生产视网膜层特异性神经细胞的方法,包括使来源于灵长类多能干细胞的视网膜组织中含有的视网膜祖细胞与抑制Notch信号通路的物质接触。