Hung H.-SYu A.Y.-HHsieh S.-CKung M.-LHuang H.-YFu R.-HYeh C.-AHsu S.-H.SHAN-HUI HSU2021-08-052021-08-05202019448244https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092749544&doi=10.1021%2facsami.0c05747&partnerID=40&md5=0c53393e2efb52b9877e6cdd2e5beaa0https://scholars.lib.ntu.edu.tw/handle/123456789/577211Controlling the behavior of mesenchymal stem cells (MSCs) through topographic patterns is an effective approach for stem cell studies. We, herein, reported a facile method to create a dopamine (DA) pattern on poly(dimethylsiloxane) (PDMS). The topography of micropatterned DA was produced on PDMS after plasma treatment. The grid-topographic-patterned surface of PDMS-DA (PDMS-DA-P) was measured for adhesion force and Young's modulus by atomic force microscopy. The surface of PDMS-DA-P demonstrated less stiff and more elastic characteristics compared to either nonpatterned PDMS-DA or PDMS. The PDMS-DA-P evidently enhanced the differentiation of MSCs into various tissue cells, including nerve, vessel, bone, and fat. We further designed comprehensive experiments to investigate adhesion, proliferation, and differentiation of MSCs in response to PDMS-DA-P and showed that the DA-patterned surface had good biocompatibility and did not activate macrophages or platelets in vitro and had low foreign body reaction in vivo. Besides, it protected MSCs from apoptosis as well as excessive reactive oxygen species (ROS) generation. Particularly, the patterned surface enhanced the differentiation capacity of MSCs toward neural and endothelial cells. The stromal cell-derived factor-1α/CXantiCR4 pathway may be involved in mediating the self-recruitment and promoting the differentiation of MSCs. These findings support the potential application of PDMS-DA-P in either cell treatment or tissue repair. Copyright ? 2020 American Chemical Society.Adhesion; Amines; Atomic force microscopy; Biocompatibility; Bone; Cell death; Elastic moduli; Endothelial cells; Flowcharting; Microchannels; Neurophysiology; Plasma applications; Stem cells; Tissue; Tissue regeneration; Topography; Adhesion forces; Effective approaches; Elastic characteristic; Foreign body reactions; Mesenchymal stem cell; Patterned surface; Plasma treatment; Polydimethylsiloxane PDMS; Cell culture; baysilon; biomaterial; dimeticone; dopamine; reactive oxygen metabolite; apoptosis; atomic force microscopy; cell adhesion; cell culture; cell differentiation; chemical structure; chemistry; drug effect; human; mesenchymal stem cell; metabolism; particle size; surface property; Apoptosis; Biocompatible Materials; Cell Adhesion; Cell Differentiation; Cells, Cultured; Dimethylpolysiloxanes; Dopamine; Humans; Mesenchymal Stem Cells; Microscopy, Atomic Force; Molecular Structure; Particle Size; Reactive Oxygen Species; Surface Properties[SDGs]SDG3[SDGs]SDG14journal article10.1021/acsami.0c05747326975722-s2.0-85092749544