聚乙烯亚胺 / 氧化石墨烯 / 苯丙氨酸手性界面对应激耐受多系分化细胞 黏附和增殖的影响.

BACKGROUND: In recent years, multilineage-differentiating stress enduring (Muse) cell has attracted increasing attention due to its pluripotent differentiation capacity and non-tumorigenicity. Cell therapy based on Muse cells has shown exciting results in the animal experiments of many diseases. However, Muse cells face the difficulties of slow proliferation in long-term in vitro culture. OBJECTIVE: To investigate the effect of chirals interfaces on adhesion and proliferation of Muse cells. METHODS: The polyethyleneimine/graphene oxide/phenylalanine chiral biointerfaces (PEI/GO/L-Phe and PEI/GO/D-Phe) were constructed based on the layerby-layer self-assembly method using polyethyleneimine (PEI) as the substrate layer and graphene oxide (GO) and L/D-phenylalanine (L/D-Phe) sequentially deposited. The effect of self-assembled chiral biointerfaces on the adhesion and proliferation behavior of Muse cells was investigated. RESULTS AND CONCLUSION: (1) PEI/GO/L-Phe and PEI/GO/D-Phe chiral interfaces were successfully constructed based on facile self-assembly technology. (2) The statistical results showed that the chirality on the interface influenced Muse cell behaviors significantly. The initial adhesion and subsequent proliferation of Muse cells were enhanced by the PEI/GO/L-Phe interface, probably owing to the preferred adsorption of proteins, which further promote Muse cell proliferation. [ABSTRACT FROM AUTHOR]