Cistanche polysaccharide (CDPS)/polylactic acid (PLA) scaffolds based coaxial electrospinning for vascular tissue engineering

ABSTRACTHigh rate of platelet adhesion and limited biocompatibility were regarded as the chief weaknesses of vascular tissue engineering scaffolds. The objective of this research was to overcome these drawbacks by ultilizing coaxial electrospinning to combine CDPS with PLA. CDPS and PLA were located at the inner and external layer respectively so that a “core-sheath” structure was formed. The properties of scaffolds were tested by methods such as mechanical testing, MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide] assay and subcutaneous transplantation. Compared to natural tissues, CDPS/PLA coaxial scaffolds showed excellent biomechanic properties and hemocompatibility so that CDPS owned good potentiality in vascular tissue engineering.