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The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity. 
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Transient expression assays for quantifying signaling output.

Yajie Niu1, Jen Sheen

  • 1Department of Molecular Biology and Center for Computational and Integrative Biology, Massachusetts General Hospital, Boston, MA, USA. niu@molbio.mgh.harvard.edu

Methods in Molecular Biology (Clifton, N.J.)
|May 12, 2012
PubMed
Summary
This summary is machine-generated.

The protoplast transient expression system offers a robust method for plant science research. This system enables high-throughput screening and functional gene characterization in Arabidopsis.

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Area of Science:

  • Plant Molecular Biology
  • Biochemistry
  • Genetics

Background:

  • The protoplast transient expression system is a widely adopted technique for investigating plant signal transduction pathways.
  • Arabidopsis mesophyll protoplasts are ideal for research due to their physiological responsiveness, ease of isolation, and transfection efficiency.
  • This system supports high-throughput screening and comprehensive functional analysis of genes.

Purpose of the Study:

  • To detail protocols for protoplast isolation and transfection.
  • To outline methods for assaying plant signaling pathways.
  • To facilitate genetic complementation studies in Arabidopsis.

Main Methods:

  • Isolation of Arabidopsis mesophyll protoplasts.
  • Polyethylene glycol-calcium-mediated transient transfection.
  • Development of assays for quantifying signaling pathway outputs.

Main Results:

  • Established detailed protocols for protoplast isolation and transfection.
  • Demonstrated the utility of the system for various assays.
  • Enabled genetic complementation of mutant plant cells.

Conclusions:

  • The protoplast transient expression system is a versatile tool for plant research.
  • Protocols provided facilitate functional genomics and signal transduction studies.
  • The system supports systematic and genome-wide characterization of gene functions.