Researchers at Amirkabir University of Technology in Iran have developed a smart scaffold that accelerates the differentiation of stem cells into bone-forming cells. The technology combines a surface pattern inspired by natural bone tissue with piezoelectric properties, which enable materials to generate an electrical response under mechanical stress. The findings could contribute to advances in bone tissue engineering and regenerative medicine, reports Nour News, a partner of TV BRICS.
The project aimed to recreate two key features of natural bone tissue: the surface structure of bone-forming cells and the piezoelectric effect that occurs when bone responds to mechanical forces.
To achieve this, the scientists created surfaces that copy the shape and structure of bone-forming cells. They combined these surfaces with materials that can produce an electrical response when exposed to mechanical force. The researchers used polydimethylsiloxane (PDMS), barium titanate nanoparticles and fine fibres made from polyvinylidene fluoride (PVDF) to create the experimental scaffolds. These materials were designed to reproduce both the surface characteristics and electromechanical behaviour of natural bone.
During laboratory tests, stem cells obtained from adipose tissue were cultured on the engineered scaffolds and exposed to mechanical strain within the physiological range. The cells demonstrated favourable growth and viability, while tests showed accelerated differentiation into bone-forming cells. Molecular and cellular indicators of bone formation became active within a short period, with early signs of bone formation observed after just seven days.
According to the researchers, the main innovation lies in combining cell-specific surface topography with piezoelectric properties in a single system. By using physical stimuli to guide stem cell differentiation, the technology reduces reliance on chemical agents and could help lower costs while improving the consistency and quality of cells intended for therapeutic use. The reusable scaffolds may also support prolonged cell culture and reduce the need for repeated cell passages.
The findings have potential applications in bone tissue engineering, cell therapy, bioactive implants and the development of advanced biomaterials for regenerative medicine.