Transplantation of 3D bio-printed cardiac mesh improves cardiac function and vessel formation via ANGPT1/Tie2 pathway in rats with acute myocardial infarction

Kyung Seob Kim, Hyung Joon Joo, Seung Cheol Choi, Jong Ho Kim, Chi Yeon Park, Myeong Hwa Song, Ji Min Noh, Jung Joon Cha, Soon Jun Hong, Tae Hoon Ahn, Mi Na Kim, Ji Eun Na, Im Joo Rhyu, Do Sun Lim

Research output: Contribution to journalArticlepeer-review

Abstract

A novel tissue engineering strategy using 3D bio-print technology has become a promising therapeutic method for acute myocardial infarction (AMI) in an animal model. However, the application of 3D bio-printed tissue remains limited due to poor graft survival. Therefore, it is a scientific priority to enhance graft survival by precisely adjusting the 3D environment of encapsulated cells. In this study, novel transplantable 3D cardiac mesh (cMesh) tissue with a porous mesh structure was presented using human cardiomyocytes, human cardiac fibroblasts, and gelatin-methacryloyl-collagen hydrogel. Cardiomyocytes and cardiac fibroblasts were well spreaded. The cardiomyocytes were connected with a gap junction channel in bio-printed cMesh and a 3D cardiac patch with an aggregated structure. Porous cMesh demonstrated structural advantages by increased phosphorylation of mTOR, AKT, and ERK signals associated with cell survival. Transplanted cMesh in rats with AMI improved long-term graft survival, vessel formation, and stabilization, reduced fibrosis, increased left ventricle thickness, and enhanced cardiac function. Our results suggest that porous cMesh provides structural advantages and a positive therapeutic effect in an AMI animal model.

Original languageEnglish
Article number045014
JournalBiofabrication
Volume13
Issue number4
DOIs
Publication statusPublished - 2021 Oct

Keywords

  • 3D bio-printing
  • acute myocardial infarction
  • angiogenesis
  • GelMA-collagen hydrogel
  • graft survival
  • porous mesh structure

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biochemistry
  • Biomaterials
  • Biomedical Engineering

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