DNA hydrogels for bone regeneration

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dc.contributor.authorAthanasiadou, Dimitra
dc.contributor.authorMeshry, Nadeen
dc.contributor.authorMonteiro, Naara G. [UNESP]
dc.contributor.authorErvolino-Silva, Ana C. [UNESP]
dc.contributor.authorChan, Ryan Lee
dc.contributor.authorMcCulloch, Christopher A.
dc.contributor.authorOkamoto, Roberta [UNESP]
dc.contributor.authorCarneiro, Karina M.M.
dc.contributor.institutionUniversity of Toronto
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T13:51:52Z
dc.date.available2023-07-29T13:51:52Z
dc.date.issued2023-04-25
dc.description.abstractDNA-based biomaterials have been proposed for tissue engineering approaches due to their predictable assembly into complex morphologies and ease of functionalization. For bone tissue regeneration, the ability to bind Ca2+ and promote hydroxyapatite (HAP) growth along the DNA backbone combined with their degradation and release of extracellular phosphate, a known promoter of osteogenic differentiation, make DNA-based biomaterials unlike other currently used materials. However, their use as biodegradable scaffolds for bone repair remains scarce. Here, we describe the design and synthesis of DNA hydrogels, gels composed of DNA that swell in water, their interactions in vitro with the osteogenic cell lines MC3T3-E1 and mouse calvarial osteoblast, and their promotion of new bone formation in rat calvarial wounds. We found that DNA hydrogels can be readily synthesized at room temperature, and they promote HAP growth in vitro, as characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, atomic force microscopy, and transmission electron microscopy. Osteogenic cells remain viable when seeded on DNA hydrogels in vitro, as characterized by fluorescence microscopy. In vivo, DNA hydrogels promote the formation of new bone in rat calvarial critical size defects, as characterized by micro-computed tomography and histology. This study uses DNA hydrogels as a potential therapeutic biomaterial for regenerating lost bone.en
dc.description.affiliationFaculty of Dentistry University of Toronto
dc.description.affiliationDepartment of Basic Sciences Universidade Estadual Paulista Júlio de Mesquita Filho School of Dentistry at Araçatuba, SP
dc.description.affiliationInstitute of Biomedical Engineering University of Toronto
dc.description.affiliationUnespDepartment of Basic Sciences Universidade Estadual Paulista Júlio de Mesquita Filho School of Dentistry at Araçatuba, SP
dc.identifierhttp://dx.doi.org/10.1073/pnas.2220565120
dc.identifier.citationProceedings of the National Academy of Sciences of the United States of America, v. 120, n. 17, 2023.
dc.identifier.doi10.1073/pnas.2220565120
dc.identifier.issn1091-6490
dc.identifier.issn0027-8424
dc.identifier.scopus2-s2.0-85152976130
dc.identifier.urihttp://hdl.handle.net/11449/248719
dc.language.isoeng
dc.relation.ispartofProceedings of the National Academy of Sciences of the United States of America
dc.sourceScopus
dc.titleDNA hydrogels for bone regenerationen
dc.typeArtigo

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