サカグチ　カツヒサ   SAKAGUCHI Katsuhisa   坂口　勝久    所属   医学研究科 医学研究科 (医学部医学科をご参照ください)    職種   非常勤講師
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Perfusable vascular tree like construction in 3D cell-dense tissues using artificial vascular bed.
掲載誌名	正式名：Microvascular research 略　 称：Microvasc Res ISSNコード：10959319/00262862
掲載区分	国外
巻・号・頁	141,pp.104321
著者・共著者	TOBE Yusuke†, HOMMA Jun, SAKAGUCHI Katsuhisa*, SEKINE Hidekazu*, IWASAKI Kiyotaka, SHIMIZU Tatsuya
担当区分	責任著者
発行年月	2022/05
概要	Perfusable vascular structures in cell-dense tissues are essential for fabricating functional three-dimensional (3D) tissues in vitro. However, it is challenging to introduce functional vascular networks observable as vascular tree, finely spaced at intervals of tens of micrometers as in living tissues, into a 3D cell-dense tissue. Herein, we propose a method for introducing numerous vascular networks that can be perfused with blood into 3D tissues constructed by cell sheet engineering. We devise an artificial vascular bed using a hydrogel that is barely deformed by cells, enabling perfusion of the culture medium directly beneath the cell sheets. Triple-layered cell sheets with an endothelial cell network prepared by fibroblast co-culture are transplanted onto the vascular bed and subjected to perfusion culture. We demonstrate that numerous vascular networks are formed with luminal structures in the cell sheets and can be perfused with India ink or blood after a five-day perfusion culture. Histological analysis also demonstrates that perfusable vascular structures are constructed at least 100 μm intervals uniformly and densely within the tissues. The results suggest that our perfusion culture method enhances vascularization within the 3D cell-dense tissues and enables the introduction of functional vasculature macroscopically observable as vascular tree in vitro. In conclusion, this technology can be used to fabricate functional tissues and organs for regenerative therapies and in vitro experimental models.
DOI	10.1016/j.mvr.2022.104321
PMID	35032535