Development of an injectable composite for bone regeneration

With the development of minimally invasive surgical techniques, there is a growing interest in the research and development of injectable biomaterials especially for orthopedic applications. In a view to enhance the overall surgery benefits for the patient, the BIOSINJECT project aims at preparing a new generation of mineral-organic composites for bone regeneration exhibiting bioactivity, therapeutic activity and easiness of use to broaden the application domains of the actual bone mineral cements and propose an alternative strategy with regard to their poor resorbability, injectability difficulties and risk of infection. First, a physical-chemical study demonstrated the feasibility of self-setting injectable composites associating calcium carbonate-calcium phosphate cement and polysaccharides (tailor-made or commercial polymer) in the presence or not of an antibacterial agent within the composite formulation. Then, bone cell response and antimicrobial activity of the composite have been evaluated in vitro. Finally, in order to evaluate resorption rate and bone tissue response an animal study has been performed and the histological analysis is still in progress. These multidisciplinary and complementary studies led to promising results in a view of the industrial development of such composite for dental and orthopaedic applications

Tumor-targeted superfluorinated micellar probe for sensitive in vivo19F-MRI.

International audienceWe describe herein the assembly and in vivo evaluation of a tailor-made micellar carrier system designed for the optimized encapsulation of a superfluorinated MRI probe and further targeting of solid tumors. The in vivo validation was carried out on MC38 tumor-bearing mice which allowed the confirmation of the efficient targeting properties of the nano-carrier, as monitored by 19F-MRI

Coupling NMR to SANS: Addressing at once structure and dynamics in soft matter

status: publishe