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One-step approach producing barcoded rabies virus with optimized diversity.

Kang Tan1, Zi-Xuan Shen2, Ya-Qian Wang1

  • 1Lingang Laboratory, Shanghai Center for Brain Science and Brain-Inspired Intelligence Technology, 555 Qiangye Road, Shanghai 201210, China.

Cell Reports Methods
|December 3, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a simplified one-step method for producing barcoded rabies virus strains, improving barcode diversity and efficiency for brain-wide neuronal connectivity mapping.

Keywords:
CP: neuroscienceCVS-N2c strainbarcoded rabies viruslateral hypothalamic areamonosynaptic tracingone-step approachrabies virus production

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Mapping neuronal connectivity is crucial for understanding brain function.
  • Barcoded rabies viruses are powerful tools for connectomics, but face challenges in barcode diversity and transsynaptic transfer.
  • Existing methods for producing barcoded CVS-N2cΔG strains are technically demanding.

Purpose of the Study:

  • To introduce a simplified one-step method for producing SAD-B19ΔG and CVS-N2cΔG rabies virus strains.
  • To improve barcode diversity and uniformity in rabies virus libraries.
  • To enhance the efficiency and accessibility of barcoded rabies virus production for connectomic studies.

Main Methods:

  • Developed a streamlined one-step protocol for generating barcoded SAD-B19ΔG and CVS-N2cΔG rabies virus strains.
  • Focused on simplifying the production process, reducing time, and minimizing background contamination.
  • Evaluated the diversity, uniformity, and tracing efficiency of viruses produced using the new method.

Main Results:

  • The one-step method significantly simplifies production and reduces manufacturing time.
  • Achieved improved diversity and uniformity of the rabies virus barcode library.
  • Demonstrated that viruses produced by this method exhibit tracing efficiency comparable to conventional techniques.
  • Eliminated background contamination issues associated with previous methods.

Conclusions:

  • The novel one-step method offers a more efficient and accessible approach to producing barcoded rabies viruses.
  • This advancement facilitates the development and application of barcoded-rabies-virus-based connectomic studies.
  • The improved barcode diversity and transfer efficiency will aid in comprehensive brain-wide neuronal mapping.