Digital Light Processing Based Bioprinting with Composable Gradients
Open accessAbstract
Recapitulation of complex tissues signifies a remarkable challenge and, to date, only a few approaches have emerged that can efficiently reconstruct necessary gradients in 3D constructs. This is true even though mimicry of these gradients is of great importance to establish the functionality of engineered tissues and devices. Here, a composable‐gradient Digital Light Processing (DLP)‐based (bio)printing system is developed, utilizing the unprecedented integration of a microfluidic mixer for the generation of either continual or discrete gradients of desired (bio)inks in real time. Notably, the precisely controlled gradients are composable on‐the‐fly by facilely by adjusting the (bio)ink flow ratios. In addition, this setup is designed in such a way that (bio)ink waste is minimized when exchanging the gradient (bio)inks, further enhancing this time‐ and (bio)ink‐saving strategy. Various planar and 3D structures exhibiting continual gradients of materials, of cell densities, of growth factor concentrations, of hydrogel stiffness, and of porosities in horizontal and/or vertical direction, are exemplified. The composable fabrication of multifunctional gradients strongly supports the potential of the unique bioprinting system in numerous biomedical applications.
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The combination of 90% amino substitution degree GelMA and 10% w/v concentration (GM90-10%) was selected for its optimal mechanical properties, biocompatibility, and photocrosslinking efficiency, which has become the mainstream choice for tissue engineering, 3D printing, and cell culture.
“For GelMA hydrogel preparation, the combination of 90 % amino substitution degree GelMA and 10 % w/v concentration (GM90-10 %) was selected for its optimal mechanical properties, biocompatibility, and photocrosslinking efficiency, which has become the mainstream choice for tissue engineering, 3D printing, and cell culture [47,48].”
From Hydrogel scaffold encapsulating MSC-Exos and ZIF-8 promotes bone regeneration via coordinating osteogenesis and immunomodulation (2025) · cites this paper as [47]
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Cited by
Sorted by citations
Si, Y., Li, X., Dong, S., Gao, X., Zhu, Y., Mo, L., Wang, Z., Wang, S., & Zhang, C. (2025) · Bioactive Materials · doi:10.1016/j.bioactmat.2025.08.026 · Cited by 17 · see citing works
“%) was selected for its optimal mechanical properties, biocompatibility, and photocrosslinking efficiency, which has become the mainstream choice for tissue engineering, 3D printing, and cell culture [47,48].”
- Authors
- Wang, M., Li, W., Mille, L. S., Ching, T., Luo, Z., Tang, G., Garciamendez, C. E., Lesha, A., Hashimoto, M., & Zhang, Y. S.
- Affiliations
- Brigham and Women's Hospital (US)
- Division of Engineering in Medicine Department of Medicine Brigham and Women's Hospital Harvard Medical School Cambridge MA 02139 USA
- Singapore University of Technology and Design (SG)
- Corresponding author
- Zhang, Yu Shrike
- ORCID
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2021-10-23
- Volume
- 34
- Issue
- 1
- Pages
- e2107038-e2107038
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- PMC
- PMC8741743
- OpenAlex
- W3203134233
- Cited by
- 206
- References
- 3
- Citations by year
- 2026: 26 · 2025: 54 · 2024: 48 · 2023: 32 · 2022: 44 · 2021: 2
- FWCI
- 9.57
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Licence
- Locations
- Advanced Materials (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health (R21EB025270, R00CA201603)
- National Science Foundation (CBET‐EBMS‐123859)
- Brigham Research Institute
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › 3D Printing in Biomedical Research
- Physical Sciences › Engineering › Automotive Engineering › Additive Manufacturing and 3D Printing Technologies
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
- Keywords
- digital light processing, 3D bioprinting, micromixer, growth factor gradients, cell density gradient, porosity gradient, 3D tissue constructs
- MeSH terms
- Ink, Hydrogels, Tissue Engineering, Tissue Scaffolds, Bioprinting, Printing, Three-Dimensional
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