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Current Nanoscience
ISSN (Print): 1573-4137
ISSN (Online): 1875-6786
VOLUME: 10
ISSUE: 2
DOI: 10.2174/1573413710999140123114222      Price:  $58









Gene Expression and Behavior Analysis of PC12 Cells Grown on Synthetic Biodegradable Fibrous Membranes Coated with Natural Biopolymers

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Author(s): Tsung-Hsien Tsai, Chien-Cheng Tai, Yueh-Hsiu Steven Wu, Shih-Han Hung, Shwu-Fen Chang, Chih-Ping Yang and How Tseng
Pages 235-242 (8)
Abstract:
The aliphatic polyesters PLLA (poly L-lactic acid) and PBSA (poly (butylene succinate)-co-(butylene adipate)) were used to fabricate nonwoven-type scaffolds with sub-micrometer fiber diameters via an electrospinning method. The electrospun membrane surfaces were further coated with either γ-PGA (poly-γ-glutamic acid) or collagen through physical bonding. These specialized surfaces were employed as peripheral nerve conduits to regulate cell adhesion and cell proliferation in vitro of the neuron cell line PC12. Furthermore, the expression of neuron growth-related (GAP-43, MAP-2) and apoptosis-related genes (Bcl-xL, Bcl-2, Bax, Fas) was evaluated for PC12 cells cultured on the electrospun membranes in response to NGF (nerve growth factor) treatment. No significant differences in apoptosis-related gene expression were observed as a function of membrane type. The GAP-43 and MAP-2 genes were highly expressed on the PLLA samples with NGF but performed variably on the PBSA samples depending on the type of coating material. Our results suggest that electrospun PLLA membranes can serve as proper matrices for neuron outgrowth and that electrospun PBSA membranes are suitable surfaces for PC12 cell attachment and proliferation.
Keywords:
Collagen, electrospinning, neuron cells, PBSA, γ-PGA, PLLA.
Affiliation:
No.250, Wushing Street, Xinyi District, Taipei City 110-31, Taiwan, R.O.C