Jeonghyun Son

All Publications

• Clinically Relevant and Precisely Printable Live Adipose Tissue-Based Bio-Ink for Volumetric Soft Tissue Reconstruction. Advanced healthcare materials Jeong, W., Son, J., Choi, J., Han, J., Jeon, S., Kim, M. K., Ha, W., Kang, H. W. 2024: e2402680

  Abstract

  Autologous fat is widely used in soft tissue reconstruction; however, significant volume reduction owing to necrosis and degradation of the transplanted adipose tissue (AT) remains a major challenge. To address this issue, a novel live AT micro-fragment-based bio-ink (ATmf bio-ink) compatible with precision 3D printing, is developed. Live AT micro-fragments of ≈280 µm in size are prepared using a custom tissue micronizer and they are incorporated into a fibrinogen/gelatin mixture to create the ATmf bio-ink. AT micro-fragments exhibit high viability and preserve the heterogeneous cell population and extracellular matrix of the native AT. The developed bio-ink enables precise micropatterning and provides an excellent adipo-inductive microenvironment. AT grafts produced by co-printing the bio-ink with polycaprolactone demonstrate a 500% improvement in volume retention and a 300% increase in blood vessel infiltration in vivo compared with conventional microfat grafts. In vivo engraftment of AT grafts is further enhanced by using a stem cell-laden ATmf bio-ink. Last, it is successfully demonstrated that the bio-ink is enabled for the creation of clinically relevant and patient-specific AT grafts for patients undergoing partial mastectomy. This novel ATmf bio-ink for volumetric soft tissue reconstruction offers a pioneering solution for addressing the limitations of existing clinical techniques.

  View details for DOI 10.1002/adhm.202402680

  View details for PubMedID 39466900