Strategies for the encapsulation of cells for the design of cell-based sensors require environment friendly immobilization procedures whereas preserving organic exercise of the reporter cells. Here, we introduce an immobilization method that depends upon the symbiotic relationship between two bacterial strains: cellulose-producing Gluconacetobacter xylinus cells; and recombinant Escherichia coli cells harboring recombinase-based dual-color artificial riboswitch (RS), as a mannequin for cell-based sensor. Following sequential coculturing of recombinant cells in the cellulose matrix, remaining immobilization of E. coli cells was accomplished after reconstituted silk fibroin (SF) protein was added to a “dwelling membrane” producing the composite bacterial cellulose-silk fibroin (BC-SF) scaffold. By controlling incubation parameters for each varieties of cells, in addition to the conformations in SF secondary construction, a selection of strong composite scaffolds have been ready starting from opaque to clear. The properties of the scaffolds have been in contrast in phrases of porosity, water capability, distribution of recombinant cells throughout the scaffolds matrix, onset of cells activation, and skill to guard recombinant operate of cells towards UV irradiation. The closer-fitted microstructure of clear BC-SF scaffolds resulted in leakage-free encapsulation of recombinant cells with preserved RS
operate as a result of of a mixture of a number of parameters that carefully matched properties of a biofilm setting.