Advances in Enabling Technologies for Bone Tissue Engineering

A special issue of Bioengineering (ISSN 2306-5354). This special issue belongs to the section "Regenerative Engineering".

Deadline for manuscript submissions: 31 July 2024 | Viewed by 3696

Special Issue Editors


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Guest Editor
Thayer School of Engineering, Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA
Interests: tissue engineering; regenerative medicine; biomaterials and scaffolds; craniofacial reconstruction; orthopaedics; critical-size defects; fracture healing
Special Issues, Collections and Topics in MDPI journals
Department of Biomedical Engineering, University of Arizona, Tucson, AZ 85721, USA
Interests: organ on a chip; stem cells; biomaterials; medical devices; BioMEMs
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The field of tissue engineering focuses on a combination of scaffolds, cells, and bioactive factors to initiate repair, replacement, or regeneration of damaged or diseased tissue. Since its definition in the early 1990s, the field has expanded greatly, with research focused on every tissue in the body. Despite this rapid growth in many different tissue types, bone remains one of the leading topics of study with scaffold design spanning an extensive list of fabrication methods. Scaffolds have been formed using 3D printing, hydrogels, electrospinning, and many other techniques to capture the necessary porosity, mechanical properties, and biocompatibility to induce bone regeneration. Further, the materials used in these fabrication methods have been adapted from simple polymers to combined constructs with gradient properties to directly tailor the direction and rate of formation. These complex structures range from natural to synthetic polymers, as well as metals and ceramics to recapitulate the mineralized matrix. Further, external additives have been incorporated to improve bioactivity and healing potential, especially in environments prone to infection or weakened strength.

This special issue of Bioengineering on “Advances in Enabling Technologies for Bone Tissue Engineering” will focus on innovative techniques for inducing bone formation ranging, for example, from material combinations to the fabrication of a bone framework to electrical stimulation to signaling for inducing new tissue. This Special Issue will focus on all new and exciting technology for studying and inducing bone formation in diseased and damaged tissue, where all relevant research areas are welcome.

Dr. Katherine R. Hixon
Dr. Shang Song
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • bone
  • bone tissue engineering
  • scaffold
  • cells
  • bioactive factors
  • fabrication methods
  • regenerative medicine

Published Papers (2 papers)

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Research

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15 pages, 11272 KiB  
Article
Direct Integration of 3D Printing and Cryogel Scaffolds for Bone Tissue Engineering
by Levi M. Olevsky, Amritha Anup, Mason Jacques, Nadia Keokominh, Eric P. Holmgren and Katherine R. Hixon
Bioengineering 2023, 10(8), 889; https://doi.org/10.3390/bioengineering10080889 - 27 Jul 2023
Cited by 1 | Viewed by 1435
Abstract
Cryogels, known for their biocompatibility and porous structure, lack mechanical strength, while 3D-printed scaffolds have excellent mechanical properties but limited porosity resolution. By combining a 3D-printed plastic gyroid lattice scaffold with a chitosan–gelatin cryogel scaffold, a scaffold can be created that balances the [...] Read more.
Cryogels, known for their biocompatibility and porous structure, lack mechanical strength, while 3D-printed scaffolds have excellent mechanical properties but limited porosity resolution. By combining a 3D-printed plastic gyroid lattice scaffold with a chitosan–gelatin cryogel scaffold, a scaffold can be created that balances the advantages of both fabrication methods. This study compared the pore diameter, swelling potential, mechanical characteristics, and cellular infiltration capability of combined scaffolds and control cryogels. The incorporation of the 3D-printed lattice demonstrated patient-specific geometry capabilities and significantly improved mechanical strength compared to the control cryogel. The combined scaffolds exhibited similar porosity and relative swelling ratio to the control cryogels. However, they had reduced elasticity, reduced absolute swelling capacity, and are potentially cytotoxic, which may affect their performance. This paper presents a novel approach to combine two scaffold types to retain the advantages of each scaffold type while mitigating their shortcomings. Full article
(This article belongs to the Special Issue Advances in Enabling Technologies for Bone Tissue Engineering)
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Review

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30 pages, 2585 KiB  
Review
Delivery of Growth Factors to Enhance Bone Repair
by Jacob R. Ball, Tara Shelby, Fergui Hernandez, Cory K. Mayfield and Jay R. Lieberman
Bioengineering 2023, 10(11), 1252; https://doi.org/10.3390/bioengineering10111252 - 26 Oct 2023
Viewed by 1811
Abstract
The management of critical-sized bone defects caused by nonunion, trauma, infection, malignancy, pseudoarthrosis, and osteolysis poses complex reconstruction challenges for orthopedic surgeons. Current treatment modalities, including autograft, allograft, and distraction osteogenesis, are insufficient for the diverse range of pathology encountered in clinical practice, [...] Read more.
The management of critical-sized bone defects caused by nonunion, trauma, infection, malignancy, pseudoarthrosis, and osteolysis poses complex reconstruction challenges for orthopedic surgeons. Current treatment modalities, including autograft, allograft, and distraction osteogenesis, are insufficient for the diverse range of pathology encountered in clinical practice, with significant complications associated with each. Therefore, there is significant interest in the development of delivery vehicles for growth factors to aid in bone repair in these settings. This article reviews innovative strategies for the management of critical-sized bone loss, including novel scaffolds designed for controlled release of rhBMP, bioengineered extracellular vesicles for delivery of intracellular signaling molecules, and advances in regional gene therapy for sustained signaling strategies. Improvement in the delivery of growth factors to areas of significant bone loss has the potential to revolutionize current treatment for this complex clinical challenge. Full article
(This article belongs to the Special Issue Advances in Enabling Technologies for Bone Tissue Engineering)
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