Their findings, published in Materials Today, suggest that physical alignment of MSCs on micropatterned culture dishes improves their therapeutic efficacy in regenerative applications.  

The team utilised temperature-responsive culture dishes etched with microgroove patterns to promote the formation of aligned MSC sheets. This configuration facilitated improved cell-to-cell interactions and better preservation of extracellular matrix components. Upon cooling, the intact sheets could be detached from the culture surface without enzymatic treatment, maintaining their structure and bioactivity.  

Aligned MSC sheets showed significantly increased secretion of key paracrine factors, including vascular endothelial growth factor (VEGF), hepatocyte growth factor (HGF), and transforming growth factor beta (TGF-β). These cytokines play critical roles in angiogenesis, tissue regeneration, and immunomodulation, making the enhanced MSC sheets more promising for clinical use.  

Importantly, the alignment process did not compromise the cells’ multipotency. The MSCs retained their capacity to differentiate into osteogenic, adipogenic, and chondrogenic lineages, ensuring their continued relevance for diverse therapeutic applications.  

The researchers also noted that delivering MSCs in sheet form – rather than as single-cell suspensions –offers practical advantages in vivo, such as improved cell retention at the implantation site and enhanced survival rates post-transplantation.  

This study highlights a scalable, non-invasive technique to increase the functional performance of MSCs for regenerative therapies. Further preclinical studies are expected to evaluate the therapeutic outcomes of aligned MSC sheets in specific models of tissue injury and degenerative disease.