Home Microbiology High-resolution Patterned Biofilm Deposition Using pDawn-Ag43
Microbiology JoVE (Open Access) Citable · DOI

High-resolution Patterned Biofilm Deposition Using pDawn-Ag43

DOI: 10.3791/58625-v
What you'll learn
  • Prepare pDawn-Ag43 E. coli strains and optical stimulation setup for biofilm patterning
  • Culture spatially patterned bacterial biofilms using light-directed surface adhesion
  • Image and verify high-resolution biofilm deposition patterns
  • Apply optogenetic control to bacterial biofilm engineering and synthetic biology
Protocol

We demonstrate a method for depositing Escherichia coli bacterial biofilms in arbitrary spatial patterns with a high resolution using optical stimulation of a genetically encoded surface-adhesion construct.

Difficulty
advanced
Total time
~3–5 days (strain preparation 1 day, biofilm culture and imaging 2–4 days)
Model organism
Escherichia coli (genetically engineered pDawn-Ag43 strain)
Biosafety
BSL-1

Steps

1
Prepare pDawn-Ag43 strains and optical setup

Culture engineered E. coli expressing pDawn-Ag43 adhesin construct and configure projector-based optical illumination system for bacterial pattern stimulation.

▶ 00:57
2
Culture patterned biofilms under light control

Grow bacteria on substrate under programmed spatial light patterns to induce optogenetically controlled biofilm deposition in defined geometries.

▶ 03:44
3
Image deposited biofilm patterns

Acquire microscopy images of patterned biofilms to visualize spatial resolution and fidelity of light-directed deposition.

▶ 05:18
4
Analyze high-resolution biofilm deposition results

Evaluate microscopy data to confirm spatial pattern accuracy and demonstrate proof-of-concept for optogenetic biofilm engineering.

▶ 06:02
💬 Comments coming soon