Surface topography and hydrophilicity regulate macrophage phenotype in milled microfluidic systems. Issue 19 (22nd August 2018)

• Record Type: Journal Article
• Authors: Kosoff, David; Yu, Jiaquan; Suresh, Vikram; Beebe, David J.; Lang, Joshua M.
• Is Part Of: Lab on a chip. Volume 18:Issue 19(2018)
• Page Start: 3011
• Page End: 3017
• Publication Date: 2018-08-22
• Subjects: Miniature electronic equipment -- Periodicals; Combinatorial chemistry -- Periodicals; Biotechnology -- Periodicals; 543.0813
• DOI: 10.1039/c8lc00431e
• Languages: English
• ISSNs: 1473-0197

Abstract

Abstract : We demonstrate that mechanical and physiochemical properties of micromilled culture surfaces regulate cell biology. Abstract : Micromilling is an underutilized technique for fabricating microfluidic platforms that is well-suited for the diverse needs of the biologic community. This technique, however, produces culture surfaces that are considerably rougher than in commercially available culture platforms and the hydrophilicity of these surfaces can vary considerably depending on the choice of material. In this study, we evaluated the impact of surface topography and hydrophilicity in milled microfluidic devices on the cellular phenotype and function of primary human macrophages. We found that the rough culture surface within micromilled systems affected the phenotype of macrophages cultured in these devices. However, the presence, type, and magnitude of this effect was dependent on the surface hydrophilicity as well as exposure to chemical polarization signals. These findings confirm that while milled microfluidic systems are an effective platform for culture and analysis of primary macrophages, the topography and hydrophilicity of the culture surface within these systems should be considered in the planning and analysis of any macrophage experiments in which phenotype is relevant.