Kuang W, Liu T, He F, Yu L, Wang Q, Yu C. Icariside II promotes the differentiation of human amniotic mesenchymal stem cells into dopaminergic neuron-like cells.
In Vitro Cell Dev Biol Anim 2021;
57:457-467. [PMID:
33721206 DOI:
10.1007/s11626-021-00556-8]
[Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 02/18/2021] [Indexed: 10/21/2022]
Abstract
The purpose of this study is to observe the effect of icariside II (ICS II) on the differentiation of human amniotic mesenchymal stem cells (hAMSCs) into dopaminergic neuron-like cells, the involvement of PI3K signaling pathway inhibitors. After identifying hAMSCs by flow cytometry, hAMSCs were induced and treated with ICS II at 10 μmol/L, 3 μmol/L, 1 μmol/L, and 0 μmol/L. hAMSCs in the LY294002+3μM ICS II group were pretreated with 20 μmol/L LY294002, a PI3K-specific inhibitor, for 1 h, and then hAMSCs were induced with 3 μmol/L ICS II. On the 21st day of induction, immunofluorescence was used to detect expression of the neuronal nuclei (NeuN), neuron-specific enolase (NSE), microtubule-associated protein-2 (MAP-2), glial fibrillary acidic protein (GFAP), and tyrosine hydroxylase (TH) antigens in each induced cell group. Western blotting was used to detect the relative protein expression of NSE, MAP-2, GFAP, and TH. ELISA was used to detect the dopamine concentration in the induction medium supernatant of each group. After 21 d of ICS II induction, immunofluorescence showed that GFAP expression was not obvious in any hAMSC group. The NeuN, NSE, MAP-2, and TH fluorescent proteins were expressed in each group. NeuN was expressed in the nucleus and cytoplasm, while NSE, MAP-2, and TH were mainly expressed in the cytoplasm. The positive cell rates of NeuN, NSE, MAP-2, and TH in the 10 μmol/L, 3 μmol/L, and 1 μmol/L ICS II groups were higher than those in the LY294002+3μM ICS II and control groups. After 21 d of induction, the Western blot results showed that the protein expression levels of NSE, MAP-2, and TH in the 10 μmol/L, 3 μmol/L, and 1 μmol/L ICS II groups were significantly higher than those in the LY294002+3μM ICS II and control groups. The MAP-2 protein expression levels in the 10 μmol/L and 3 μmol/L groups were higher than that in the 1 μmol/L group. After 21 d of induction, the dopamine concentrations in the culture supernatants of the 10 μmol/L, 3 μmol/L, and 1 μmol/L ICS II groups were higher than those in the LY294002+3μM ICS II and control groups. In our experiment, ICS II induced hAMSCs to differentiate into dopaminergic neuron-like cells, and the optimal concentration range of ICS II was 3-10 μmol/L. Moreover, the PI3K signaling pathway is involved in the above differentiation process.
Collapse