简介：
Overview
This protocol outlines the method for injecting lentivirus into the mouse amniotic cavity at embryonic day 7.5, facilitating uniform transduction of the neural plate with minimal adverse effects on embryonic development.
Key Study Components
Area of Science
- Neuroscience
- Developmental Biology
- Genetic Manipulation
Background
- NEPTUNE enables genetic manipulation of the mouse embryonic nervous system.
- It allows for rapid generation of knockdown or lineage tracing models.
- The protocol is adaptable for various experimental needs.
- Identifying the amniotic cavity can be challenging and requires careful ultrasound imaging.
Purpose of Study
- To provide a method for efficient viral delivery to the neural plate.
- To enhance understanding of embryonic nervous system development.
- To facilitate rapid experimental timelines in genetic studies.
Methods Used
- Injection of lentivirus into the amniotic cavity of mouse embryos.
- Use of ultrasound for guidance during injection.
- Preparation of the surgical site and embryos for injection.
- Monitoring of embryo development post-injection.
Main Results
- Successful transduction of the neural plate observed.
- Strong expression of fluorescent reporters in brain and ectoderm-derived tissues.
- Minimal detrimental effects on embryo survival and development.
- Potential for neural tube defects with excessive injection volumes.
Conclusions
- The NEPTUNE protocol is effective for genetic manipulation in early mouse embryos.
- It provides a rapid approach to studying embryonic development.
- Further applications may extend to other organ systems.
What is the NEPTUNE protocol?
NEPTUNE is a method for targeting and manipulating the mouse embryonic nervous system through viral injection.
At what embryonic day is the injection performed?
The injection is performed at embryonic day 7.5.
What are the potential risks of the injection?
Excessive injection volumes may lead to neural tube defects.
How does the protocol ensure accurate injection?
Ultrasound imaging is used to guide the injection process.
What types of genetic material can be delivered?
The protocol allows for delivery of shRNA, cdRNA, or barcoded viral libraries.
Can this method be adapted for other organ systems?
Yes, while primarily for the nervous system, it can be adapted for other systems.
What is the expected outcome of successful injections?
Successful injections result in strong expression of fluorescent reporters in targeted tissues.
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