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Cell Type-specific Gene Expression Profiling in the Mouse Liver
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Reference Gene and Protein Expression Levels in Two Different NAFLD Mouse Models.

Layanne C C Araujo1, Silvana Bordin1, Carla R O Carvalho1

  • 1Department of Physiology and Biophysics, Institute of Biological Science, University of Sao Paulo, Sao Paulo 05508-900, Brazil.

Gastroenterology Research and Practice
|February 25, 2020
PubMed
Summary
This summary is machine-generated.

Reference gene and protein expression can vary in nonalcoholic fatty liver disease (NAFLD) models. Researchers must account for these changes in high-fat diet (HFD) and genetically obese (ob/ob) mice for accurate data normalization.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Animal Models

Background:

  • Reference genes and proteins are crucial for normalizing and quantifying experimental data.
  • Expression levels of reference markers can be influenced by experimental conditions and treatments.
  • Nonalcoholic fatty liver disease (NAFLD) research requires reliable normalization strategies.

Purpose of the Study:

  • To assess reference gene and protein expression in established mouse models of NAFLD.
  • To compare expression patterns between high-fat diet (HFD)-induced and genetically obese (ob/ob) mouse models.
  • To determine the suitability of common reference genes and proteins for data normalization in these NAFLD models.

Main Methods:

  • Histological staining to quantify hepatic lipid droplets.
  • Real-time polymerase chain reaction (RT-PCR) for gene expression analysis.
  • Immunoblotting (Western blotting) for protein expression analysis.

Main Results:

  • Both HFD and ob/ob models showed significant increases in liver lipid droplets compared to standard diet (SD) controls.
  • The ob/ob group exhibited reduced expression of reference genes (β-actin, α-tubulin, GAPDH, RPL3) compared to the HFD group.
  • GAPDH protein levels were reduced in ob/ob mice relative to SD, though this difference was not statistically significant.

Conclusions:

  • Minor variations in reference gene and protein expression exist between HFD and ob/ob NAFLD mouse models.
  • These expression differences necessitate careful consideration during data analysis and interpretation in NAFLD research.
  • The findings highlight the importance of validating reference markers for specific experimental contexts in NAFLD studies.