“…Ultrafine fibrous tissue engineering (TE) scaffolds with fibers around 50 to 500 nm can promote tissue repair due to the similarity to the extracellular matrix (ECM) structure [1,2,3,4]. However, the recent development in TE scaffolds requires not only the morphological similarity [5] but also additional functions to improve therapeutic efficacy [6,7,8,9]. In this regard, functional components were incorporated into tissue engineering scaffolds, such as anti-inflammatory drugs [8], antibiotics [10], anti-cancer drugs [11], various proteins [6,12], DNA [13], growth factors [14,15,16] and other therapeutic agents [12].…”