1D, 2D, and 3D Scaffolds promoting angiogenesis for enhanced wound healing

2022 ◽  
pp. 134690
Author(s):  
Yani Guo ◽  
Jun Huang ◽  
Yifen Fang ◽  
Hai Huang ◽  
Jun Wu
Keyword(s):  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Camila M. B. Machado ◽  
Nathalia B. D. Lima ◽  
Sóstenes L. S. Lins ◽  
Alfredo M. Simas

AbstractWe address the use of Euler's theorem and topological algorithms to design 18 polyhedral hydrocarbons of general formula CnHn that exist up to 28 vertexes containing four- and six-membered rings only; compounds we call “nuggets”. Subsequently, we evaluated their energies to verify the likelihood of their chemical existence. Among these compounds, 13 are novel systems, of which 3 exhibit chirality. Further, the ability of all nuggets to perform fusion reactions either through their square faces, or through their hexagonal faces was evaluated. Indeed, they are potentially able to form bottom-up derived molecular hyperstructures with great potential for several applications. By considering these fusion abilities, the growth of the nuggets into 1D, 2D, and 3D-scaffolds was studied. The results indicate that nugget24a (C24H24) is predicted to be capable of carrying out fusion reactions. From nugget24a, we then designed 1D, 2D, and 3D-scaffolds that are predicted to be formed by favorable fusion reactions. Finally, a 3D-scaffold generated from nugget24a exhibited potential to be employed as a voxel with a chemical structure remarkably similar to that of MOF ZIF-8. And, such a voxel, could in principle be employed to generate any 3D sculpture with nugget24a as its level of finest granularity.


2009 ◽  
Vol 2 (1) ◽  
pp. 229 ◽  
Author(s):  
Mark A Carlson ◽  
Amy K Prall ◽  
Jeremiah J Gums ◽  
Alex Lesiak ◽  
Valerie K Shostrom

2020 ◽  
Vol 21 (18) ◽  
pp. 6913
Author(s):  
Ushashi C. Dadwal ◽  
Alyssa R. Merkel ◽  
Jonathan M. Page ◽  
Kristin A. Kwakwa ◽  
Michael Kessler ◽  
...  

Patients with advanced skeletal metastases arising from primary cancers including breast, lung, and prostate suffer from extreme pain, bone loss, and frequent fractures. While the importance of interactions between bone and tumors is well-established, our understanding of complex cell–cell and cell–microenvironment interactions remains limited in part due to a lack of appropriate 3D bone models. To improve our understanding of the influence of bone morphometric properties on the regulation of tumor-induced bone disease (TIBD), we utilized bone-like 3D scaffolds in vitro and in vivo. Scaffolds were seeded with tumor cells, and changes in cell motility, proliferation, and gene expression were measured. Genes associated with TIBD significantly increased with increasing scaffold rigidity. Drug response differed when tumors were cultured in 3D compared to 2D. Inhibitors for Integrin β3 and TGF-β Receptor II significantly reduced bone-metastatic gene expression in 2D but not 3D, while treatment with the Gli antagonist GANT58 significantly reduced gene expression in both 2D and 3D. When tumor-seeded 3D scaffolds were implanted into mice, infiltration of myeloid progenitors changed in response to pore size and rigidity. This study demonstrates a versatile 3D model of bone used to study the influence of mechanical and morphometric properties of bone on TIBD.


Physiology ◽  
2013 ◽  
Vol 28 (6) ◽  
pp. 380-390 ◽  
Author(s):  
Daniel J. Tschumperlin

Fibroblast migration is essential to normal wound healing and pathological matrix deposition in fibrosis. This review summarizes our understanding of how fibroblasts navigate 2D and 3D extracellular matrices, how this behavior is influenced by the architecture and mechanical properties of the matrix, and how migration is integrated with the other principle functions of fibroblasts, including matrix deposition, contraction, and degradation.


2021 ◽  
Vol 1 (Supplement) ◽  
Author(s):  
T. Tolstova ◽  
A. Mamedova ◽  
M. Drozdova ◽  
T. Demina ◽  
T. Akopova ◽  
...  

Author(s):  
Kewalin Inthanon ◽  
Weerah Wongkham ◽  
Wanida Junwikul ◽  
Siriwadee Chomdej

Cell-based therapies and tissue engineering applications require biocompatible substrates that support and regulate the growth, survival, and differentiation of specific cell types. Extensive research efforts in regenerative medicine are devoted to the development of tunable biomaterials which support various cell types including stem cells. In this research, the non-cytotoxic biopolymer polycaprolactone (PCL) was fabricated into 2D and 3D scaffolds with or without the low-pressure oxygen plasma treatment to enhance hydrophilicity. Cellular responses and biocompatibility were evaluated using a human Wharton’s jelly mesenchymal stem cell line (BCP-K1). The 2D PCL scaffolds enhanced initial cell attachment compared to the 3Ds indicated by a higher expression of focal adhesion kinase (FAK). Whilst, the 3D scaffolds promoted cell proliferation and migration as evidenced by higher cyclin A expression and filopodial protrusion, respectively. The 3D scaffolds potentially protected the cell entering to apoptosis/necrosis program and induced cell differentiation, evaluated by gene expression. Both 2D and 3D PCL appeared to have stronger effects on cell behavior than a control substrate (polystyrene). In summarize, the different configuration and surface properties of PCL scaffolds provide various options for modulation of stem cell behaviors, including attachment, proliferation, survival, and differentiation, when combined with specific growth factors and culture conditions.


2020 ◽  
Vol 108 ◽  
pp. 153-167 ◽  
Author(s):  
Shixuan Chen ◽  
Hongjun Wang ◽  
Yajuan Su ◽  
Johnson V. John ◽  
Alec McCarthy ◽  
...  

2019 ◽  
Vol 99 ◽  
pp. 247-257 ◽  
Author(s):  
Kaylene Carter ◽  
Hyun Jong Lee ◽  
Kyung-Sun Na ◽  
Gabriella Maria Fernandes-Cunha ◽  
Ignacio Jesus Blanco ◽  
...  

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