Slice Preparation, Organotypic Tissue Culturing and Luciferase Recording of Clock Gene Activity in the Suprachiasmatic Nucleus

Overview

This article details a procedure for preparing slices of the adult mouse hypothalamic suprachiasmatic nucleus (SCN) and culturing the SCN tissue in organotypic conditions. It also describes the measurement of oscillatory clock gene protein expression using dynamic luciferase reporter technology.

Key Study Components

Area of Science

• Neuroscience
• Chronobiology
• Cell Culture Techniques

Background

• The SCN is crucial for regulating circadian rhythms.
• Transgenic mice with luciferase reporters allow for real-time monitoring of gene expression.
• Traditional methods may not provide continuous monitoring of clock gene expression.
• Visual demonstration of SCN dissection is essential for accurate technique learning.

Purpose of Study

• To demonstrate the dissection and culturing of the SCN from transgenic mice.
• To enable continuous recording of clock gene expression with high temporal resolution.
• To provide a reliable method for studying circadian rhythms in vitro.

Methods Used

• Dissection of the brain from transgenic mice.
• Preparation of brain slices containing the SCN.
• Culturing SCN tissue on membranes in Petri dishes.
• Measurement of luciferase activity using photomultiplier tubes.

Main Results

• Successful dissection and culturing of SCN tissue were achieved.
• Continuous monitoring of clock gene expression was demonstrated.
• High-resolution data on circadian oscillations were obtained.

Conclusions

• This method allows for detailed analysis of circadian rhythms.
• It provides a significant advantage over traditional techniques.
• Visual demonstrations enhance the learning of complex dissection techniques.

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