Regenerative MedicineDLP Bioprinting Advances Bring Lab-Grown Organs Closer to Clinical Reality
Digital light processing (DLP) bioprinting uses projected light to build living tissue constructs layer by layer with remarkable precision. Unlike older extrusion or inkjet methods, DLP handles cells gently and produces finer microscale detail. This review surveys the latest generation of photocurable bioinks — including chemically modified natural polymers, hydrogels derived from decellularized tissue matrix, and hybrid nanocomposites — that allow researchers to fabricate structures closely mimicking cornea, cartilage, liver, and skeletal muscle. Advances in how light absorption is tuned, how material flow properties are optimized, and how dual crosslinking locks structures in place have improved both print quality and cell survival. The authors also highlight emerging 'smart' bioinks that respond to stimuli or actively guide cell behavior. Key barriers still blocking clinical translation include difficulty building adequate blood vessel networks inside thick constructs, challenges in scaling production, and ensuring printed tissues remain functional long enough to be therapeutically useful.
