AI Article Synopsis

  • Researchers aimed to create new composite biomaterials with properties that promote blood vessel formation and bone growth for use in tissue engineering, addressing issues with traditional bone autografts.
  • They developed a porous fibrin/alginate scaffold with calcium phosphate incorporated, which demonstrated favorable characteristics for bone cell attachment, growth, and differentiation.
  • The scaffolds also showed positive results in promoting blood vessel formation and were biocompatible, indicating potential for further development in clinical applications.

Article Abstract

Due to the limitations of bone autografts, we aimed to develop new composite biomaterials with pro-angiogenic and osteogenic properties to be used as scaffolds in bone tissue engineering applications. We used a porous, cross-linked and slowly biodegradable fibrin/alginate scaffold originally developed in our laboratory for wound healing, throughout which deposits of calcium phosphate (CaP) were evenly incorporated using an established biomimetic method. Material characterisation revealed the porous nature and confirmed the deposition of CaP precursor phases throughout the scaffolds. MC3T3-E1 cells adhered to the scaffolds, proliferated, migrated and differentiated down the osteogenic pathway during the culture period. Chick chorioallantoic membrane (CAM) assay results showed that the scaffolds were pro-angiogenic and biocompatible. The work presented here gave useful insights into the potential of these pro-angiogenic and osteogenic scaffolds for bone tissue engineering and merits further research in a pre-clinical model prior to its clinical translation.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8040555PMC
http://dx.doi.org/10.1177/20417314211005610DOI Listing

Publication Analysis

Top Keywords

pro-angiogenic osteogenic
12
bone tissue
12
tissue engineering
12
calcium phosphate
8
scaffolds bone
8
scaffolds
6
pro-angiogenic
4
osteogenic composite
4
composite scaffolds
4
scaffolds fibrin
4

Similar Publications

Article Synopsis
  • The prolonged use of external fixation during distraction osteogenesis (DO) can heighten complications, while bone marrow mesenchymal stem cells (BMSCs) play a crucial role in bone regeneration due to their pro-angiogenic and osteogenic abilities.
  • RSC-96, a type of Schwann cell, has been shown to promote the proliferation, migration, and differentiation of BMSCs when co-cultured, enhancing both bone formation and blood vessel development through neurotrophic factor secretion and activation of specific signaling pathways.
  • In a rat DO model, RSC-96's conditioned medium improved bone healing outcomes, with notable increases in gene expression markers for osteogenesis and angiogenesis, alongside positive radiological and biomechanical assessments.
View Article and Find Full Text PDF
Article Synopsis
  • Angiogenesis is crucial for bone regeneration, but traditional cytokine therapies face challenges like high costs and safety concerns.
  • Using Deep Learning and Natural Language Processing, researchers developed a new algorithm to identify promising pro-angiogenic peptides from disordered regions of proteins, highlighting the potential for safer bioactive peptides.
  • One notable tripeptide, PSP, significantly promotes vascularization and osteogenic differentiation in stem cells, showcasing its role as a 'priming' agent that enhances the body's natural bone formation processes.
View Article and Find Full Text PDF

Infectious bone defects pose significant clinical challenges due to persistent infection and impaired bone healing. Icam1 macrophages were identified as crucial and previously unrecognized regulators in the repair of bone defects, where impaired oxidative phosphorylation within this macrophage subset represents a significant barrier to effective bone regeneration. To address this challenge, dual-responsive iron-doped barium titanate (BFTO) nanoparticles were synthesized with magnetic and ultrasonic properties.

View Article and Find Full Text PDF

Regeneration of functional bone tissue relies heavily on achieving adequate vascularization in engineered bone constructs following implantation. This process requires the close integration of osteogenesis and angiogenesis. Cell-free fat extract (CEFFE or FE), a recently emerging acellular fat extract containing abundant growth factors, holds significant potential for regulating osteo-angiogenic coupling and promoting regeneration of vascularized bone tissue.

View Article and Find Full Text PDF

Addressing a critical challenge in current tissue-engineering practices, this study aims to enhance vascularization in 3D porous scaffolds by incorporating bioceramics laden with pro-angiogenic ions. Specifically, freeze-dried gelatin-based scaffolds were infused with sol-gel-derived powders of Cu-doped akermanite (CaMgSi2O) and bredigite (CaMgSiO) at various concentrations (10, 20, and 30 wt%). The scaffolds were initially characterized for their structural integrity, biodegradability, swelling behavior, impact on physiological pH, and cytocompatibility with human umbilical vein endothelial cells (HUVECs).

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!