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Microfluidic preparation, shrinkage, and surface modification of monodispersed alginate microbeads for 3D cell culture.
Yu, Dan; Dong, Ziye; Lim, HyunTaek; Chen, Yuting; Ding, Zhenya; Sultana, Nadia; Wu, Jiangyu; Qin, Bingyu; Cheng, Jianjian; Li, Wei.
Afiliação
  • Yu D; Department of Critical Care Medicine, People's Hospital of Zhengzhou University (Henan Provincial People's Hospital) Zhengzhou 450003 China chengjian030701@163.com.
  • Dong Z; Department of Chemical Engineering, Texas Tech University 807 Canton Ave Lubbock Texas 79409 USA wei.li@ttu.edu.
  • Lim H; Department of Chemical Engineering, Texas Tech University 807 Canton Ave Lubbock Texas 79409 USA wei.li@ttu.edu.
  • Chen Y; Department of Chemical Engineering, Texas Tech University 807 Canton Ave Lubbock Texas 79409 USA wei.li@ttu.edu.
  • Ding Z; School of Materials Science & Engineering, Wuhan Institute of Technology LiuFang Campus, No. 206, Guanggu 1st Road, Donghu New & High Technology Development Zone Wuhan 430205 P. R. China.
  • Sultana N; Department of Chemical Engineering, Texas Tech University 807 Canton Ave Lubbock Texas 79409 USA wei.li@ttu.edu.
  • Wu J; Department of Chemical Engineering, Texas Tech University 807 Canton Ave Lubbock Texas 79409 USA wei.li@ttu.edu.
  • Qin B; School of Materials Science & Engineering, Wuhan Institute of Technology LiuFang Campus, No. 206, Guanggu 1st Road, Donghu New & High Technology Development Zone Wuhan 430205 P. R. China.
  • Cheng J; Department of Critical Care Medicine, People's Hospital of Zhengzhou University (Henan Provincial People's Hospital) Zhengzhou 450003 China chengjian030701@163.com.
  • Li W; Department of Critical Care Medicine, People's Hospital of Zhengzhou University (Henan Provincial People's Hospital) Zhengzhou 450003 China chengjian030701@163.com.
RSC Adv ; 9(20): 11101-11110, 2019 Apr 09.
Article em En | MEDLINE | ID: mdl-35520215
Functionalized alginate microbeads (MB) have been widely used for three-dimensional (3D) culture of cells and creating biomimetic tissue models. However, conventional methods for preparing these MB suffer from poor polydispersity, due to coalescence of droplets during the gelation process and post-aggregation. It remains an immense challenge to prepare alginate MB with narrow size distribution and uniform shape, especially when their diameters are similar to the size of cells. In this work, we developed a simple method to produce monodispersed, cell-size alginate MB through microfluidic emulsification, followed by a controlled shrinkage process and gelation in mineral oil with low concentration of calcium ion (Ca2+). During the gelation process caused by the diffusion of Ca2+ from the oil to water phase, a large amount of satellite droplets with sub-micrometer sizes was formed at the water/oil interface. As a result, each original droplet was transformed to one shrunken-MB with much smaller size and numerous submicron-size satellites. To explore the feasibility of the shrunken-MB for culturing with cells, we have successfully modified a variety of polymer nanofilms on MB surfaces using a layer-by-layer assembly approach. Finally, the nanofilm-modified MB was applied to a 3D culture of GFP-expressing fibroblast cells and demonstrated good biocompatibility.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: RSC Adv Ano de publicação: 2019 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: RSC Adv Ano de publicação: 2019 Tipo de documento: Article