3D Bioprinted Hydrogel Formulations for Bone Tissue Engineering
Author Information
Author(s): Ana Catarina Sousa, Grace Mcdermott, Fraser Shields, Rui Alvites, Bruna Lopes, Patrícia Sousa, Alícia Moreira, André Coelho, José Domingos Santos, Luís Atayde, Nuno Alves, Stephen M. Richardson, Marco Domingos, Ana Colette Maurício
Primary Institution: Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto
Hypothesis
Can alginate-based bioinks incorporating nano-hydroxyapatite and collagen enhance osteogenic differentiation of human bone marrow stem cells in 3D bioprinted constructs?
Conclusion
The study demonstrates that incorporating nano-hydroxyapatite and collagen into alginate enhances the osteogenic potential of bioprinted hydrogels.
Supporting Evidence
- The addition of collagen and nano-hydroxyapatite improved the swelling rate of the hydrogels, promoting cell proliferation.
- Live/Dead assays showed over 80% cell viability in the alginate-nHA-Col group after one week.
- Gene expression analysis indicated enhanced expression of osteogenic markers in the alginate-nHA-Col group compared to alginate alone.
Takeaway
Researchers created a special gel that helps grow bone cells in a lab, which could help make better treatments for bone problems without using animals.
Methodology
The study developed a composite bioink using alginate, nano-hydroxyapatite, collagen, and human bone marrow stem cells, and tested its properties for 3D bioprinting.
Limitations
The study's dual crosslinking methodology may lead to spatial heterogeneity and extended processing times.
Participant Demographics
Human bone marrow stem cells were used in the study.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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