Construction of an artificial intercellular communication network using the nitric oxide signaling elements in mammalian cells.
To increase the functionality of synthetic genetic circuits for programming cell populations and coordinating behavior across a population, we developed and analyzed an artificial cell-to-cell communication system in mammalian cells using nitric oxide signaling elements by integrating nitric oxide synthesis with the c-fos promoter, whose transcription activity could be triggered by the nitric oxide pathway. In the system, engineered 'sender' cells synthesized the intercellular messenger nitric oxide, which diffused into the environment and activated the c-fos promoter, and subsequently, green fluorescence protein (GFP) reporter expression in nearby engineered 'receiver' cells. Next, the sender module was integrated into the receivers under positive-feedback regulation, resulting in population density-dependent GFP expression in a quorum-sensing pattern. This artificial cell-to-cell communication system in mammalian cells could serve as a versatile tool for regulated gene expression and as building blocks for complex artificial gene regulatory networks for applications in gene therapy, tissue engineering, and biotechnology.
Wang
Wei-Dong
WD
Cancer Institute of PLA, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China. wwdlr@yahoo.com
Chen
Zheng-Tang
ZT
Kang
Bao-Guo
BG
Li
Rong
R
D002450:Cell Communication; D045744:Cell Line, Tumor; D017930:Genes, Reporter; D016762:Genes, fos; D005818:Genetic Engineering; D049452:Green Fluorescent Proteins / Q000032:analysis / Q000235:genetics; D006801:Humans; D009569:Nitric Oxide / Q000096:biosynthesis / Q000378:metabolism*; D011401:Promoter Regions, Genetic; D015398:Signal Transduction
D049452:Green Fluorescent Proteins; D009569:Nitric Oxide