Technical note: validation of internal control genes for gene expression analysis in bovine polymorphonuclear...

Area of Science:

• Animal research
• Molecular biology
• Gene expression analysis

Background:

• Gene expression analysis is crucial for understanding physiological and pathological conditions in animal research.
• Real-time PCR is the preferred method for accurate mRNA quantification.
• Validating internal control genes is essential for reliable gene expression comparisons.

Purpose of the Study:

• To evaluate commonly used reference genes for gene expression analysis in bovine polymorphonuclear leukocytes.
• To identify the most stable reference genes for accurate normalization in this cell type.

Main Methods:

• Eight reference genes (ACT, GAPD, H2A, TBP, HPRT1, SDHA, YWHAZ, and 18S rRNA) were assessed.
• Real-time PCR was used to determine the transcription levels of six reference genes.
• Geometric averaging was employed to select the most stable genes.

Main Results:

• SDHA, YWHAZ, and 18S rRNA demonstrated the highest stability among the evaluated reference genes.
• These genes are suitable for normalizing real-time PCR data in bovine polymorphonuclear leukocytes.
• Other tested reference genes showed less stability.

Conclusions:

• SDHA, YWHAZ, and 18S rRNA are recommended as reliable reference genes for gene expression studies in bovine polymorphonuclear leukocytes.
• Proper reference gene selection is critical for accurate interpretation of gene expression data in animal models.
• This validation aids in advancing research on bovine immune cells and lactation stages.