【Abstract】 Objective To build nano-biomimetic tissue engineered blood vessel (NBTEBV) with nanotopology by using electrospinning (ELSP) technology. Methods Cony vascular endothel ial cell(VEC) on tubiform tooting in vitro was cultured. NBTEBV was built by use of multi-row nozzle with the suspension of cony vascular smooth muscle cell (VSMC) and mimic ECM (MECM) solution. NBTEBV was cultured with bioreactor in vitro . VEC and VSMC viabil ity and prol iferation were observed with MTT; and HE staining, scanning electron microscopy(SEM) observation and biomechanical test were carried out after 24 hours of static culture and 7 days of dynamic culture. Results After 7 days of culture, the length of NBTEBV was 57 mm, the external diameter was 4 mm and the thickness of wall was 0.4 mm. The NBTEBV’s color was white and the texture was even and flexible. MTT results indicated the viabil ity of cells cultured on NBTEBV for 7 days was normal(8.9 × 106 /mg, 3.5 ×105/mg for 24 hours). SEM and HE staining indicated that the topologic character of NBTEBV was similar to that of the naturalblood vessel. The NBTEBV showed a network scaffolds structure with 100 nm thick fiber and 600 nm aperture. The HE stainingresult showed that the NBTEBV was composed of VEC and VSMC by layer. Vascular mechanical results showed that the NBTEBV
ultimate hydrostatic pressure was 950 mmHg, the compl iance of the NBTEBV under physio-pressure (110/70 mmHg) was 3.0%; the ultimate tensile strength of 20 mm × 5 mm tissue sl ice was 18.5 MPa. Conclusion The technology of ELSP can use VSMC and MECM scaffold simultaneously to build tissue engineered blood vessel with nanotopology mimic native blood vessel.
Citation： ZHENG Xiaobing,QIAO Tong,RAN Feng,LIU Changjian.. EXPERIMENTAL STUDY ON TISSUE ENGINEERED BLOOD VESSEL RECONSTRUCTION WITH BIONANOTECHNOLOGY. Chinese Journal of Reparative and Reconstructive Surgery, 2008, 22(1): 92-96. doi: Copy