Reference genes for reverse transcription quantitative PCR in canine brain tissue

Area of Science:

• Veterinary Neuroscience
• Molecular Biology
• Genomics

Background:

• Canine models are crucial for studying neurological disorders like epilepsy and Alzheimer's.
• Reverse transcription quantitative polymerase chain reaction (RT-qPCR) is vital for analyzing gene expression in disease.
• Stable reference genes are essential for accurate RT-qPCR data normalization.

Purpose of the Study:

• To evaluate the expression stability of ten commonly used reference genes in various canine brain regions.
• To identify the most reliable reference genes for accurate gene expression analysis in canine brain tissue.
• To provide guidelines for selecting reference genes in canine neurobiological research.

Main Methods:

• RT-qPCR was used to assess the expression of ten reference genes across seven canine brain regions and whole brain.
• Expression stability was analyzed using GeNorm and Normfinder software.
• Data followed Minimum Information for Publication of Quantitative Real-Time PCR Experiments (MIQE) guidelines.

Main Results:

• Reference gene expression stability varied significantly across different canine brain regions.
• HMBS, GAPDH, and HPRT were identified as the most stable reference genes for whole brain analysis.
• As few as two to three reference genes are sufficient for reliable normalization, regardless of the brain area.

Conclusions:

• This study expands existing knowledge on canine brain reference gene expression.
• HMBS, GAPDH, and HPRT demonstrate excellent expression stability in canine brain tissue.
• Evaluating reference gene stability should be a standard component of experimental design and data analysis in canine neurogenetics.