Engineering of microscale vascularized fat that responds to perfusion with lipoactive hormones

作者：Xuanyue Li, Jingyi Xia, Calin Nicolescu, Miles W. Massidda, Tyler Ryan, Joe Tien · 发表于：Biofabrication · 年份：2018 · DOI：10.1088/1758-5090/aae5fe · 被引用次数：30 · 研究领域：Electrospun Nanofibers in Biomedical Applications、Tissue Engineering and Regenerative Medicine、Mesenchymal stem cell research

Current methods to treat large soft-tissue defects mainly rely on autologous transfer of adipocutaneous flaps, a method that is often limited by donor site availability. Engineered vascularized adipose tissues can potentially be a viable and readily accessible substitute to autologous flaps. In this study, we engineered a small-scale adipose tissue with pre-patterned vasculature that enables immediate perfusion. Vessels formed after one day of perfusion and displayed barrier function after three days of perfusion. Under constant perfusion, adipose tissues remained viable and responded to lipoactive hormones insulin and epinephrine with lipid accumulation and loss, respectively. Adipocyte growth correlated inversely with distance away from the feeding vessel, as predicted by a Krogh-type model.