Objective: To construct a small hairpin RNA( shRNA) expression vector,mediated by recombinant adenovirus and targeting PKM2,and which will help for exploring the biological behavior change of breast cancer cells by means of knockingdown PKM2. Methods: Three pairs of templates of PKM2 shRNA were synthesized and cloned into the pGenesil system successfully. Then its effect on the proliferation of MCF-7 was detected by MTT. Results: pGenesil-PKM2 was constructed successfully,and also it repressed proliferation...