Directional induction of dopaminergic neurons from neural stem cells using substantia nigra homogenates and basic fibroblast growth factor.
To date, complex components of available reagents have been used for directional induction of neural stem cells into dopaminergic neurons, resulting in a poor ability to repeat experiments. This study sought to investigate whether a homogenate of the substantia nigra of adult rats and/or basic fibroblast growth factor could directionally induce neural stem cells derived from the subventricular zone of embryonic rats to differentiate into dopaminergic neurons. Tyrosine hydroxylase-positive cells were observed exclusively after induction with the homogenate supernatant of the substantia nigra from adult rats and basic fibroblast growth factor for 48 hours in vitro. However, in the groups treated with homogenate supernatant or basic fibroblast growth factor alone, tyrosine hydroxylase expression was not observed. Moreover, the content of dopamine in the culture medium of subventricular zone neurons was significantly increased at 48 hours after induction with the homogenate supernatant of the substantia nigra from adult rats and basic fibroblast growth factor. Experimental findings indicate that the homogenate supernatant of the substantia nigra from adult rats and basic fibroblast growth factor could directionally induce neural stem cells derived from the subventricular zone of embryonic rats to differentiate into dopaminergic neurons in the substantia nigra with the ability to secrete dopamine.
Institute of Neuroscience, Kunming Medical College, Kunming 650031, Yunnan Province, China.
Jintao
J
Li
Department of Minimally Invasive Neurosurgery, First Hospital of Kunming Medical College, Kunming 650032, Yunnan Province, China.
Qi
Q
Yan
Department of Minimally Invasive Neurosurgery, First Hospital of Kunming Medical College, Kunming 650032, Yunnan Province, China.
Yiliu
Y
Ma
Institute of Neuroscience, Kunming Medical College, Kunming 650031, Yunnan Province, China.
Zhongtang
Z
Feng
Institute of Neuroscience, Kunming Medical College, Kunming 650031, Yunnan Province, China.
Tinghua
T
Wang
basic fibroblast growth factor; directional induction in vitro; dopaminergic neurons; homogenate of substantia nigra; neural stem cells; subventricular zone