The recombinant human fibronectin fragment is composed of three functional domains: cell-binding domain (C-domain), heparin-binding domain (H-domain), and CS-1 sequence. It is mainly involved in some physiological activities such as cell adhesion, growth, differentiation, and proliferation. The recombinant human fibronectin fragment has been widely used to enhance retroviral and lentiviral gene transfer methods into mammalian cells. The fragment enhances retroviral-mediated gene transduction by aiding the co-localization of target cells and virions.
Specifically, virus particles bind the recombinant human fibronectin fragment via interaction with the H-domain, and target cells bind mainly through the interaction of cell surface integrin receptor VLA5 and VLA-4 with the fibronectin C-domain and CS-1 site, respectively. Through facilitating proximity, recombinant human fibronectin fragment can enhance retroviral-mediated gene transfer to target cells expressing integrin receptors VLA-4 and/or VLA-5, which can improve gene transfection efficiency by 30 to 70%. In addition, recombinant human fibronectin fragment enhances the proliferation of T lymphocytes. This product is purified in E.coli and has a molecular mass of 66 kDa.
Product Features
- Shorten the cultivation time for cells and enhance killing activity.
- Stimulate lymphocytes to proliferate.
- Enhance retroviral-mediated gene transfer to hematopoietic stem cells.
- Reduce blood volume to lower the costs.
Storage Conditions
Upon reconstitution, the material should be aliquoted and frozen at -20 °C to -70°C. Avoid repeated freeze/thaw cycles.