Objective To investigate the controlled release effect and the anti-cancer cell ability of a 5-FU loaded poly-L-lactic acid (PLLA) nanofibers membrane blending with keratin.
Methods Making PLLA and keratin mix together and crosslinking to generate blending solution. Then the anti-cancer drug 5-FU was added into the solution to fabricate nanofibers membrane by high voltage electrospinning method. The micro morphology was observed by scanning electron microscope (SEM). The controlled release effect of 5-FU from the nanofibers membrane was measured by high performance liquid chromatography (HPLC). The cytotoxicity of 5-FU/PLLA keratin nanofibers membrane was evaluated by using 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay on HCT116 cell lines. At the meantime, cell growth morphology of HCT116 in experiment group were observed by microscope and transmission electron microscope.
Results 5-FU could be dispersed homogeneous in the PLLA/keratin nanofibers membrane through SEM. HPLC suggested that 5-FU could be diffused out from the fibers slowly and uniformly, which corresponded the zero order kinetics basically. After different treatment, the longer time the 5-FU/PLLA keratin nanofibers (experiment group) immerse in the medium, the much more swelling, apoptosis, and necrocytosis of the cells were observed. The cell viability for experiment group was (47.5±2.8)% by MTT, while the PLLA keratin nanofibers without 5-FU had no significant impact on cell viability (93.9±2.8)%, which was statistic significance (P<0.01).
Conclusion 5-FU/PLLA keratin nanofibers membrane owns good controlled release effect and satisfies cell inhibitory effect against HCT116 cells in vitro,which suggested that it has a promising prospect for clinical therapy.
Citation: TAN Yunpu,LI Gang,WU Xiaojian,HE Xiaowen,KE Jia,ZHANG Jing,LAN Ping.. 5-FU Loaded Nanofibers Membrane for Controlled Release Effect Against Colon Cancer Cell in Vitro. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2012, 19(6): 610-615. doi: Copy