Development of Electrospun Composite Fibers in Multiscale Structure and Investigating the Performance on Proliferation and Osteogenic Differentiation of ADSCs

作者：Xuan, Liuyang; Shi, Ming; Ma, Shuangshuang; Ye, Feng; Shi, Xuetao; Yan, Ling; Li, Yan^*

来源：Macromolecular Materials and Engineering, 2018, 303(7): 1800130.

DOI：10.1002/mame.201800130

• adipose-derived stem cells
• composite membranes
• fiber alignment
• osteogenic differentiation
• synergistic effects

Electrospun composite membranes in multiscale structures are developed for bone tissue engineering. Aligned polycaprolactone (PCL) fibers entrapping CA-HAp microparticles (containing CaCO3, hydroxyapatite, and casein in a hierarchical organization) are electrospun to find whether synergistic effects of fiber alignment and CA-HAp microparticles on improving osteogenic differentiation can be obtained. CA-HAp microparticles are in a spherical morphology of 1.42 +/- 0.26 mu m. Their presence increases fiber diameter and does not significantly affect fiber alignment. On all membranes, adipose derived stem cells (ADSCs) from humans spread very well. On a random group, cells distribute randomly and the presence of CA-HAp microparticles facilitates cell proliferation, especially for the one at CA-HAp/PCL 50 wt%; the one at CA-HAp/PCL 20 wt% shows significantly much higher alkaline phosphatase (ALP) activity (112.0% higher) than the pure PCL membrane. On aligned samples, cells align along fibers and expression of ALP is enhanced. However, at the same composition (CA-HAp/PCL 20 wt%), the random sample has much higher ALP activity than the aligned sample. The expressions of osteogenic marker genes are also evaluated. Combining the results and the applicability of membranes together, the random membrane at CA-HAp/PCL 20 wt% is the best candidate for bone tissue engineering.

• 出版日期2018-7
• 单位重庆医科大学; 华南理工大学; 中山大学