한빛사논문
- 조회532
YoungWon Koo1, Geun Hyung Kim1,2
1Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University (SKKU), Suwon, Republic of Korea 2Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, Republic of Korea
Correspondence Geun Hyung Kim
Abstract
Extrusion-based bioprinting is one of the most effective methods for fabricating cell-laden mesh structures. However, insufficient cellular activities within the printed cylindrical cell-matrix blocks, inducing low cell-to-cell interactions due to the disturbance of the matrix hydrogel, remain to be addressed. Hence, various sacrificial materials or void-forming methods have been used; however, most of them cannot solve the problem completely or require complicated fabricating procedures. Herein, we suggest a bioprinted cell-laden collagen/hydroxyapatite (HA) construct comprising meringue-like porous cell-laden structures to enhance osteogenic activity. A porous bioink is generated using a culinary process, i.e., the whipping method, and the whipping conditions, such as the material concentration, time, and speed, are selected appropriately. The constructs fabricated using the meringue-like bioink with MG63 cells and human adipose stem cells exhibit outstanding metabolic and osteogenic activities owing to the synergistic effects of the efficient cell-to-cell interactions and HA stimulation released from the porous structure. The in vitro cellular responses indicate that the meringue-like collagen bioink for achieving an extremely porous cell-laden construct can be a highly promising cell-laden material for various tissue regeneration applications.
논문정보
- Research article
- 2022년 04월 (BRIC 등록일 2022-05-09)
- 국내 연구진
- 바이오·의료융합 > 의료기기
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