期刊
ACS APPLIED MATERIALS & INTERFACES
卷 1, 期 1, 页码 136-143出版社
AMER CHEMICAL SOC
DOI: 10.1021/am8000677
关键词
Cell adhesion; AFM; cell recognition; nanotechnology; bacterial colonization; bacterial adhesion; biofilm; nanotopography; micropatterning; microstructure
资金
- ANPCyT [PICT 06-621, PICT 05-33225, PICT 05-32906, PAE 22771]
- UN LP [11/X425, 11/1129]
- CONICET
Bacterial adhesion and spreading on biomaterials are considered key features of pathogenicity. Roughness and topography of the substrate have been reported to affect bacterial adhesion, but little is known about their effect on spreading. Submicron row and channel tuning with bacterial diameter (S2) were designed to test bacterial motility on these surfaces. Random nanometer-sized structures (S1) were used as controls. Optical microscopy and AFM were employed to detect biological and surface pattern details in the micro- and nanoscale, respectively. Results showed that motility strategies (flagella orientation, elongation. aggregation in rafts, formation of network structures, and development of a bacterial frontier) were affected by the presence of submicropatterns. Importantly, the rate of bacterial spreading on S2 was significantly reduced and influenced by the orientation of the submicropatterns. Consequently, submicroengineered substrates could be employed as a tool to downgrade bacterial colonization. Such patterns could impact on the design of proper engineered structures to control biofilm spreading on solid surfaces.
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