A team of Chinese scientists has developed a new cocktail hydrogel capable of promoting neurovascular unit regeneration and repairing damaged brain tissue, offering a significant theoretical foundation and innovative approach for cell replacement therapies targeting cortical brain injuries.

While transplanting human neural progenitor cells (NPCs) shows promising potential in treating traumatic brain injuries, it still faces several obstacles, including poor cell survival, uncertain differentiation pathways, and limited functional integration.

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To address these challenges, researchers from the Guangzhou Institutes of Biomedicine and Health under the Chinese Academy of Sciences have engineered a novel hydrogel with a three-dimensional scaffold and biomimetic properties.

As detailed in a recent study published in the Journal of Advanced Research, the hydrogel mimics the biochemical and mechanical characteristics of the body’s natural extracellular matrix, significantly boosting the adhesion, viability, and targeted differentiation of human NPCs.

The hydrogel’s biomimetic structure, in combination with a bioactive microenvironment, delivers continuous neurogenic induction signals that emulate brain tissue conditions. This process efficiently guides NPCs to become functional interneurons—crucial neurons responsible for facilitating complex human cognitive and motor functions.

Additionally, the study found that the hydrogel plays a vital role in reconstructing the microstructure of the neurovascular unit. It notably enhances the immune and metabolic environment at the injury site, improves the survival of NPCs, and supports their differentiation into cortical interneurons. This, in turn, helps rebuild damaged brain tissue and partially restores neural signaling functions.