Directional Topography Influences Adipose Mesenchymal Stromal Cell Plasticity: Prospects for Tissue Engineering and Fibrosis

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art_LIGUORI_Directional_Topography_Influences_Adipose_Mesenchymal_Stromal_Cell_Plasticity_2019.PDF (11.66 MB)
Citações na Scopus
27
Tipo de produção
article
Data de publicação
2019
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
HINDAWI LTD
Autores
ZHOU, Qihui
LIGUORI, Tacia Tavares Aquinas
KUHN, Philipp Till
RIJN, Patrick van
HARMSEN, Martin C.
Citação
STEM CELLS INTERNATIONAL, article ID 5387850, 14p, 2019
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Introduction. Progenitor cells cultured on biomaterials with optimal physical-topographical properties respond with alignment and differentiation. Stromal cells from connective tissue can adversely differentiate to profibrotic myofibroblasts or favorably to smooth muscle cells (SMC). We hypothesized that myogenic differentiation of adipose tissue-derived stromal cells (ASC) depends on gradient directional topographic features. Methods. Polydimethylsiloxane (PDMS) samples with nanometer and micrometer directional topography gradients (wavelength49-3, 425nm) were fabricated. ASC were cultured on patterned PDMS and stimulated with TGF-1 to induce myogenic differentiation. Cellular alignment and adhesion were assessed by immunofluorescence microscopy after 24h. After seven days, myogenic differentiation was examined by immunofluorescence microscopy, gene expression, and immunoblotting. Results. Cell alignment occurred on topographies larger than w=1758nm/a=630nm. The number and total area of focal adhesions per cell were reduced on topographies from w=562nm/a=96nm to w=3919nm/a=1430nm. Focal adhesion alignment was increased on topographies larger than w=731nm/a=146nm. Less myogenic differentiation of ASC occurred on topographies smaller than w=784nm/a=209nm. Conclusion. ASC adherence, alignment, and differentiation are directed by topographical cues. Our evidence highlights a minimal topographic environment required to facilitate the development of aligned and differentiated cell layers from ASC. These data suggest that nanotopography may be a novel tool for inhibiting fibrosis.
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URI
https://observatorio.fm.usp.br/handle/OPI/32446
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MCP
Artigos e Materiais de Revistas Científicas - HC/ICHC
Artigos e Materiais de Revistas Científicas - HC/InCor
Artigos e Materiais de Revistas Científicas - LIM/11
Artigos e Materiais de Revistas Científicas - LIM/26