3D culture increases pluripotent gene expression in mesenchymal stem cells through relaxation of cytoskeleton tension.

ABSTRACT: Three-dimensional (3D) culture has been shown to improve pluripotent gene expression in mesenchymal stem cells (MSCs), but the underlining mechanisms were poorly understood. Here, we found that the relaxation of cytoskeleton tension of MSCs in 3D culture was critically associated with the expressional up-regulation of Nanog. Cultured in spheroids, MSCs showed decreased integrin-based cell-matrix adhesion but increased cadherin-based cell-cell interaction. Different from that in 2D culture, where MSCs exhibited branched and multiple-directed F-actin stress bundles at the cell edge and strengthened stress fibres transversing the cell body, MSCs cultured in spheroids showed compact cell body, relaxed cytoskeleton tension with very thin cortical actin filament outlining the cell, and increased

SUBMITTER: Zhou Y 

PROVIDER: S-EPMC5431137 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature