High cell density and high-resolution 3D bioprinting for fabricating vascularized tissues

Three-dimensional (3D) bioprinting techniques have emerged as the most popular methods to fabricate 3D-engineered tissues; however, there are challenges in simultaneously satisfying the requirements of high cell density (HCD), high cell viability, and fine fabrication resolution. In particular, bioprinting resolution of digital light processing-based 3D bioprinting suffers with increasing bioink cell density due to light scattering. We developed a novel approach to mitigate this scattering-induced deterioration of bioprinting resolution. The inclusion of iodixanol in the bioink enables a 10-fold reduction in light scattering and a substantial improvement in fabrication resolution for bioinks with an HCD. Fifty-micrometer fabrication resolution was achieved for a bioink with 0.1 billion per milliliter cell density. To showcase the potential application in tissue/organ 3D bioprinting, HCD thick tissues with fine vascular networks were fabricated. The tissues were viable in a perfusion culture system, with endothelialization and angiogenesis observed after 14 days of culture.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:9

Enthalten in:

Science advances - 9(2023), 8 vom: 22. Feb., Seite eade7923

Sprache:

Englisch

Beteiligte Personen:

You, Shangting [VerfasserIn]
Xiang, Yi [VerfasserIn]
Hwang, Henry H [VerfasserIn]
Berry, David B [VerfasserIn]
Kiratitanaporn, Wisarut [VerfasserIn]
Guan, Jiaao [VerfasserIn]
Yao, Emmie [VerfasserIn]
Tang, Min [VerfasserIn]
Zhong, Zheng [VerfasserIn]
Ma, Xinyue [VerfasserIn]
Wangpraseurt, Daniel [VerfasserIn]
Sun, Yazhi [VerfasserIn]
Lu, Ting-Yu [VerfasserIn]
Chen, Shaochen [VerfasserIn]

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Journal Article

Anmerkungen:

Date Completed 24.02.2023

Date Revised 29.12.2023

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1126/sciadv.ade7923

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM353185973