**Chitosan-DNA/siRNA Nanoparticles for Gene Therapy**

Qin Shi1, Marcio J. Tiera2, Xiaoling Zhang3, Kerong Dai3, Mohamed Benderdour1 and Julio C. Fernandes1 *1Orthopedic Research Laboratory, Hôpital du Sacré-Cœur de Montréal Université de Montréal 2Departamento de Quimica e Ciencias Ambientais, UNESP-Universidade Estadual Paulista- Brazil 3The key laboratory of Stem Cell Biology, Institute of Health Sciences Shanghai Jiao Tong University School of Medicine (SJTUSM) & Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences (CAS) 1Canada 2Brazil 3China* 
